Document 060xpOVjMK3p6OBLYQ6qQxd4R

friww.vyy-*- Paint Research December, 1951 -12- #97 - SUP Extenders \ The Kraft Chmsical Company of Chicago has submitted live pound samples of Loomis Talc Ma #1 and #2 for inspection. Chemical Composition MSK #1 MSK #2 SiOa 57.40* 67.00* MgO 50.60 23.13 MnO 0.46 0.02 CaO 5.82 4.84 AI2O3 0.27 0.40 0.27 0.40 Water soluble salts 0.022 0.022 Ignition loss 5.30 3.69 Through 325 mesh 99.75* 99.73* Oil absorption (Gardner-Colawn) 36.0 44.0 Bulking value 0.04212 0.04212 Brightness (Bntile TiOa as 100) 39.3 89.9 The two Loomis talcs were compared with other magnesium si11cates each as 512 dry, 20 dry, 2304 dry and 311 dry on an equal poundage basis in SUP Gloss White - Sex 471, card 65. The paintb were ground on the roller mill, and a careful check was made on ease of mixing, grinding time, brushing, V flow, gloss, texture, etc. The various laboratory tests indicate that Loomis Talc MSK #1 is similar to 512 dry Nytal 300 end 20 dry International's Asbestine 3 I fine texture, in general characteristics. MSK #1 ground slightly slower than 312 dry or 20 dry but the paint was slightly finer in texture. The gloss properties were also slightly higher on the paint made with MSK #1. The paint made with Loomis Talc MSK #2 was definitely higher in consistency, and appeared to be similar to 311 dry International ` s Asbestine 5 X in consistency character istics. tut much softer in texture. 0007-SWP-044302 `CW'SSW-K #97 - Conte Paint Research Decarter, 1951 -15- Rex 471 Card 65 Batch No. Inert Ease of Mixing Time for Grind Grind Viscosity at 75 F,, After on S- #3 Cup Redaction Fresh 0*Nite 11 Days ' 465 Q Loomis Std. 18 min. Talc 5.5 sec. MSK #1 5 H 19.2* 21.6* 54* 464 Q Loomis Std. 15 min. 2-1/2 H 43.8* 47.6* 69.4* Talc 57.6 sec. MS #2 465 Q 302 Std. 16 min. 4.5 sec. 2-1/2 H 22.6* 27.5* 55.6* 466 Q 20 Std. 17 min. 2-1/2 H 25* 21.4 sec. a.4* 55.9* 467 Q 2304 Hard to mix* 9 min. 4H 22.6 sec. 58,8* 72.6* + 1/52 cup 87.1" + 1/4 cup 468 Q 511 Std. 21 min. 2-1/2 H 50.6* 59.5* 79 + 1/4 eui 2.2 sec. Due to higher con si stony of paste. Batch No. Inert Drying Paint Brushine Flow Set-to-touch 0 'Nite GIo s b Brightness 465 Q Loonis Talc Ma #i Good Good - 5 hr. 55 min. Good Good SlightOy gray 464 Q Loonis Talc MSK #2 Sticky Poor 5 hr, 55 min. Good Fair Slightly grey 465 Q 512 Good Pair 5 hr. 53 min. Good Good - Good 466 Q 20 Good Fair 6 hr. 50 min. Good Fair Gray 467 Q 2304 Very sticky Poor 5 hr. 55 min. Good Fair Coed 468 Q. sn Sticky Viy 5 hr. 45 min. Good poor Fair Verygray 0007-SWP-044303 0007-SWP-000113673 Paint Research December, 1961 -14- 197 - Conto Bodying Agents Further teBts were conducted, to check the reactivity and bodying action of the various metallic soaps that were submitted ty the Resin Research Depart ment last month. RD 0630 - Mg 12, OH stearate HD 0831 - Basic Mg Rosin Amine D ED 0855 - Mg Armeen 16 D RD 0740 - A1 Rosin Amine D RD 0846 - Mg Armeen 2 HT RD 0846 - Mg Anaeai S RD 0847 - Mg Anueai HT RD 0852 - A1 12, OH stearate RD 0853 - Mg Rosin Amine D RD 0854 - A1 Ama S In previous work it was found that these agents have little or no reactivity when added to the finished paint., See Monthly Report for November, 1951. As a result of this work it was decided to incorporate the various soaps by grinding them with the plgnents. In the initial grinds, we introduced 075 of each agent based on the total weight of SUP. The paints were all ground on the laboratory roller mill. By the incorporation of these soaps into the grind, ve obtained a definite increase in viscosity with RD 0830, RD 0845 and RD 0847. However, the other agmts show little or no reactivity in this particular rex. The three soaps RD- 0831, RD 0740 and RD 0853 based on Rosin Amine D improved the flow and gloss properties of SUP. The three soaps RD 0845, RD 0830 and RD 0862 appeared to retard drying slightly. SUP Gloss White House Paints - Rex 471 truing Various Metallic Soaps_____ Agent Batch Tested 496 Q No agent Viscosity ~ 21 Fresh Dears Week Brushing Flow Drying Set-toTouch 0 TNite Gloss Grind 19.8" 31* 32.5* Good SI. 6 hr. Good short 10 min. Good 4 H 497 Q HD 0830 58.8* 58* + SI. 1/2 C. 5/4 C.= sticky Short Over Fair 9-1/2 hr,3 Poor 0 H (?) Due to soap 6 CD Q RD 0831 499 <2 HD 0740 32.8* 29.6* 29* Good 24 hr, 23* 27.7* 3S,,2 . s: i :ky Good Good 7 hr. Good 30 min. 6 hr. Good Very 4 H good Very 4 H good 0007--SWP--044304 0007-SWP-000113674 Paint Research Deaenber, 1951 -15- #97 - Cont. SWP Gloss Shite House Paints - Hex 471 Using Various Metallic Soaps (Cont.) Batch 500 Q 501 ft 502 ft 505 Q Agent Tested RD 0845 RD 0847 RD 0852 RD 0855 Viscosity - #5 21 Freeh Days Week (24 hr.) 48* 49.7" 58.7" (24 hr.) 59.2* 45.4" 42.4" (24 hr.) 25.7* 50.9 53.8" (24 hr.) 52.4" 55.4" 52.4" Brushing Good SI. sticky Slo sticky SI. sticky Owing Set-toFlew Touch 0 'Hite SI. Over Fair abort 9-1/2 hr. SI. 5 hr. Good short 20 min. SI. 6 hT. FaiTshort 40 min. Sl = 7 hr. Good short 40 min. Gloss Grind Good - 5 H Fair - 4 H Fair 4 H V ery 5 H The October Monthly Report, on page 18, described the effects of agents R and R Viscosity Modifier from Ross and Rove, Inc. and /7077 *so$ring Agent from Frank S. Lervia, Inc. on the viscosity of SVP Gloss White. A recheck was made of the viscosities after 60 days' storage. It was found that all consistencies have gradually decreased and even the best are only slightly higher than the guide paint. The order in decreasing efficiency could be as follows, with R and R Vis cosity Modifier shoeing little or no reactivitys lc (324) Bodied Linseed Oil 2. #7077 Bodying Agent 5. Troykyd 4. R and R Viscosity Modifier Details of the viscosity records are available to those interested. Exposures examined during the month include the following series; 1 10416-55 F, C, Examined after 4 years' exposure vertical south at Florida, end 5 years at Chicago, north and south on cedar bevel siding,, primed with Rest 450 Undercoater. A number of marked differences in results due to use of varioue oils show up at each location, but the correlation between locations is not very good. The brief listing below shows most of the trends; in the case of "dirt and milder^ it includes results in the early stages as weli as at 4 - 5 years. The basic formula is Rex 471 SWP Gloss White of 1-22-43 (bodied oil, bit l/2 rutile Ti02) 0007-SWP-044305 0007-SWP-000113675 *4*4 - Paint Research December, 1951 -16- #97 - Cont. 1. 10416-55 F, C. (Cont.) For Bodied Portion Only Dirt and Mildew Durability Linseed 'his* bodied. Normal OJC. Pittsburgh's #g00 Selected linseed) both regular and 'bis* bodied. Both normal. Slightly inferior. (8525) bodied Dehydrol Slightly dirty (early). O.K. CV (2055) Pittsburgh's Selected Soya, 'Bis* slightly dirty. both regular and 'bis* bodied. Normal or rery slightly inferior. (1275) soya "bis* bodied. Dirty early, O.K. later. r;-ghtly inferior in Florida. Cook's bodied soya (regular process). Dirty early, O.K. later. Slightly inferior in Chicago. For Normal and bodied Portions #200 Oil normal and *bis' bodied. Slightly to definitely dirty. O.K. #200 Oil normal and regular bodied. Slightly dirty. O.K. in Chicago, definitely poor in Florida. CV (2055) Oil normal and *bis* bodied. Normal to slightly dirty. O.K. CV (2035) Oil normal end regular bodied. Normal-to slightly dirty. Not quite equal to preceding. (1275) and "bis* bodied linseed. Slightly dirty, but not early. Slightly inferior. (1275) normal and 'bis* bodied. Dirtier early, dean later. Inf erior. Cook1 s nonaal. soya 'bis* bodied linseed* Clean, except very early. Slightly inferior. Cook's soya, normal and regular bodied.Slightly dirty, especially early. Slightly inferior. (5017) light Dahydrol and "bis* bodied linseed. All oil as (3Q17); Clean early, slightly dirty later. uicu.Iar * '*en poorer lax: ,, O.K. Slightly inferior due to erosion. 000'7-SWP--0443 06 0007-SWP-000113676 Paint Fsearch December, 1951 -17- #97 - Cont. 2. 11116-22 F, C. Examined, after 46 months' exposure at Florida, vertical south, and 55 months at Chicago, north and south on cedar bevel siding, primed with Bex 450 Undercoater of a light grty shade to emphasise erosion The tests Involve soya oils In Rex 471 SWF Gloss White and also certain old formulas. Brief identification and results: 1 Regular of 6-15-46. All linseed, all TiOa as 1405 anatase. Clean and good, except rather excessive erosion at Chicago in third and fourth year. 2. All oil as (1275) soya and bis-bodied soya CV 7027. Slightly dirty in early stages, slightly more erosion then (l) in later stages. 5. All oil a3 Pittsburgh's soya S,, 0. #500 (bodied ty us). Also same but increased drier content. Both seem somewhat better them 2, in some cases even better than 1. 4. Formulas of 4-8-42, pre-war vehicle, all 1403 dry. Clean, but durabil ity has been inferior to 1, since first year. 5. Formula of 10-15-42, similar but all 2173 dry T10* B. 200 rutile type. Durability quite good, in Bpite of pre-ear vehicle, but this seems to be due to slov chalking of 2173, which has resulted in poor clean-up and a definite yellow cast. 3. 13719-25 F, K. C. Examined after 24 months' exposure at Florida and 26 months at Coffeyvilla, vertical south, and 23 months at Chicago, north and south, as 2-coat self-primed work on white pine bevel siding panels. One sample tests National's 45 X basic silicate white lead in Rex 471 5WP Gloss White, using it at 15 pounds as the only 'free lead." Another tests 9 dry basic sulfate white lead substituted for the 120 pounds of 18 dry basic carbonate white lead in the basic (guide) formula. Four other tests carry Tri-Ba3e, a tribasic lead sulfate of very high basicity, at 70, 60, 30 and 15 pounds per 100 gallon formula. Most panels of this series showed considerable to bad film failure, but still 1-oked relatively good, since the failure was either microscopic or due to moderate warping. Chicago tests showed no significant differences except possible slow clean-up with Tri-Base. Coffeyville tests showed serious deep checking and some light cracking, with the regular best, 45 X and 9 dry not quite as good and the Tri-Ba3e samples ranging from equal to 45 X to very poor. Florida panels Slow 45 X and the guide as slightly cleanest. Only Tri-Bass at the two higher percent ages shows significantly more checking and cracking than the guide, 4. 13740-56 F, C. Examined after 2 years' exposure at Florida and Chicago vertical south. This series tests SWP tint formulas (a) containing basic carbonate white lead (regular), (b) eliminating 3CVL, and (c) substituting basic silicate whits lead (National's 45 X). The (b) and (:) formulas use all 41.4 dry leaded zinc on an equivalent zinc oxide has: s racner than part 511 dry leaded zinc as in the regular, A second purpose is the testing of ferrite versus chrome shading bases. The (b) formula is the only one using ooth types, the others using 0007--SWP-044307 0007-SWP-000113677 #97 - Cont, Rint Research December, 1951 -18- all ferrites, This applies to Colonial and bariceley Yellow only; the other shades involved are Chelsea Gray, Geneva Cream and Ivory, The panels are regular cedar bevel siding, primed with Rex 450 Underwater* At one year, the (b) type formulas seemed to allow more mildew growth at Florida than the formulas with supplementary lead. This phenomenon is not noticeable at 2 years, AIbo , at 1 year, the ferrite wloro were favored over the chromes for tint retmtlon, but at 2 years this is no longer noticeable. The clear differences at 2 years Florida, all considered as of minor significance, are: (1) Lees chalk mb-off on (b) type, (2) Less fading (chalk-ra^O and dirt on (b) type, Chelsea Grey only. Also a noticeable microscopic cheddr :n this shade only, slightly less on the regular than others. Chicago results at one year revealed only very slight differences, none significant. , On the Chicago panels at 25 months, there are only two differences noticeable, but they are important because they do not wnfora to the Florida patten.: (1) Chromes much more faded than ferrites. (2) Slightly but consistently more fade and lass dirt with 45 X samples than with (a) and (b). 50 15568-50 F, C. These test a number of modified oils as replacaawts for the 40% of bodied linseed in Rex 471 SVP Gloss Vhite. Examined after 6 months' exposure at Florida, vertical south, and at Chicago., north and south on cedar bevel. siding panels, primed with Rex 450 Underwater, The guide and basic formula for all tests is Rex 471 OJ 48S N using all linseed oil and all titanium as 1405 dry anatase. Although there were no outstandingly good or poor results in chalking rate and dirt collection, the following notes give some indication of the performance to date. Results equivalmt to guide unless specified: Oil No. Oil A. V. Paint Viscosity #5 Orifice Sec, Description 6 Months Results RC 6571 5.5 6574 10,1 6575 6560 2.7 7.2 46 Aliphat 16 A - P.E,, ester, Low chalk; dean except 20% tung. mildew in Florida, 74 Aliphat 16 A - Glyceride, Chalk varies: rather dirty 20% tung. 21 Neefat 15 Chalk varies; dirt normal. 54 faff} over 20% tung. Low chalk; hit clean. 0007--SWP-044308 0007-SWP-000113678 Paint Research December, 1951 -19- #97 - Cont. Oil on No. A. V. Paint Viscosity #5 Orifice Sec. Description 6 Months Results RC 6561 5.7 39 Aliphat 16 A? glyceryl ester. Chalk raries, rather dirty. 6662 3.7 42 Aliphat 16 A, P,,E. ester. Chalk raries, rather dirty. 6570 0.55 16 XN 828 propane refined soya. Free chalking. 6519 7.2 44 Swift's soya, S02 bodied. Low chalk, slightly dirty 6543 8.2 59 (1273) soya, S02 bodied. Same, but cleaner. 6756 4.7 6B (3019) Defaydrolstyrene, 12-1/2". Normal. 6775 3.5 64 Same, but 26*. Normal. 0007-SWP-044309 0007-SWP-000113679 Paint Bastard! Novaaber, 1951 -16#97 - Coat. An unrelated tast qrstaa included in the series was *sta-Par One Coat Exterior White,* from the Siceya Soya Paint Company, of Peoria, Illinois. This was tested over Bex 450 and also as two coats salf-prlmed. It has looked poor throughout the exposures, Tory dirty due to aLov chalking. Furthermore, it showed serious chocking for the past year, especially eelf-primed. Panels 16599-16415 CS, CN, and Oakland were prepared during the month for exposure south and north vertical at Chicago and south vertical at Oakland. These cover comparisons of Liquid 0 aLo C78 V 5 which was suspect as regards durability because of the inclusion of 517 pounds of lithopone in the pigmentation. The variations include (a) regular formula, (b) as (a) bat rutile titanium caldun 2152 dry for lithopone, (c) as (b) but oil conserva tion vehicle, (d) as (b) but rutile titanium calcium 2140 dry for lithopone, (e) aa (d) hut alao 2030 dry TiO# for tha 1405 dry Ti0a present, and (fj regu lar SUP Rax 471 Gloss White, Card 62. 0007-SWP--044310 #97 - Cant. Faint Rossarch November, 1951 -15- Dallas, T 1598. Veiy clean at Florida; nomal at Chicago. Los Angales, P 1408. Nomal. Soso readings a trifle better. Newark, N 1598. Slightly dirty at Chicago; rates better at Florida, because of better whiteness. Slight checking. Cleveland, EA 1428. Nomal. Sons readings slightly better. Acme 1 A, #122 - C 858 A. Better in early stages, slightly dirty at 2 years. Lowe Bros. H.S., #5B-868-528. Averages nomal, hat somewhat more dirt collection Chicago north, 6-18 months. Martin-Senour 100, M 1488. As Lowe Brothers. Also slight checking. Lawrence, 52957-55. Cleaner then nomal, except some subject to mildew at Florida. Whiteness is good, but film diowe erosion and checking. Lucas, TG-260, 5F 1618. Clean-up at least normal, but erodes and shows alight checking. Panels 15496-15505 F, C were examined after 24 months' exposure at Florida, vertical south, and 27 months at Chicago, north and south. All are cedar bevel siding, primed with Bex 450 Undercoater. The following oil tests showed no film failure and had appearance characteristics equivalent to the Bex 471 SUP doss White, 100? linseed, used as guide, except for the few minor differences specified* 1. Samples of (5516) 80/20? soya/chinawood bodied oil, from Qaklmd, Cleveland and Chicago production lots, with the exception that the Oakland sample Bemad to have a alight edge In dean-up In some cases. 2. CVB-979 a (5516) special made by the solvent process. 5. (48) bodied linseed oil. (These three used vith the usual mount of (2) rnw linseed oil.) 4. Archer-Daniels-Midland #65-1 chinawood-soya as only oil. 5. CVR-985 bodied safflower used with CV (2656) raw safflower. Samples 4 and 5 showed up slightly cleaner than the others on most panels. 0007-SWP-044 311 0007-SWP-000113681 Paint Research November, 1951 -14- #97 - SHP The Resin Research Department has submitted the bo(tying agents listed below for evaluation in an oil base and alkyd base house point. RD 0650 - Mg 12, OH stearate RD 0631 - Basic Mg Rosin Amine P RD 0855 - Mg Amen 16 D RD 0840 - A1 Rosin Amine D RD 0845 - Mg Anason 2 HT RD 0646 - Mg Ameen S RD 0847 - Mg Anneal HT RD 0652 - A1 12, OH stearate RD 0855 - Mg Rosin Amine D RD 0854 - A1 Ameed S These agents have no bodying effect in SHP Gloss Hhite Rex 471, card 65 whed used to the extent of 0.14$, 0.28$ end 0.42$. The same agents will be evaluated in SHP Manor Brown, using the long oil alkyd (4106) as the vehicle. Panels 11646-55 F, C were retired after 56 months at Florida, verti cal south and 49 months at Chicago, north and south, cedar bevel sliding. The test covers the use of sew samples of hlown soya oil from the Vegetable Products Research Laboratory, as replacements for the bodied linseed in Rex 471 SHP Gloss Hhite of 2-18-47, card 45. Other regular formulas, using (5516) soya-chlnavood, are included for reference. Results, Including consideration of a previous report, ware contra dictory in that the Florida panels shoved some of the blown soya oils as inferior in durability, while the Chicago panels showed none poorer than the guides and a few slightly better. The differences in physical characteristics of these oils (numbered AVM-1, -4, -5, -6, -7, -8 and -9) were listed as very alight, all acid valuaa being 2.2 or less. There was a alight to definite trend toward more dirt with these special oils. He feel that the emphasis should be on the generally satisfactory durability of these oils, although none should be considered as superior. Exposures 15450-61 F, C were examined after 24 months at Florida, vertical south, and 28 months at Chicago, north and south. These represent samples of Rex 471 SHP Gloss White or corresponding first quality outside white, from each factory listed below, all applied on cedar bevel siding, using Rex 450 Dnderooater. He feel that the results are of interest, although it is to be understood that one exposure series of one sample each does not offer a valid comparison of the various factories' production. All ratings up to the present time are considered below. Chicago, Rex 471 C 5368 F and C 1598. Normal. No film failure, not particularly clean or dirty at either location. Oakland, 01538 B. Same. 0007-SWP-044312 0007-SWP-000113682 as*** v- Point Research October, 1951 -15- m...=.m The Reals Reeeereb Dapartert submitted the following vehicles for evaluation la houae paint formulations. RD 0595 Vinyl etheri of linseed elcobalt. Body - Z, - Z3. A. V. - 0. Color 11 - 12. Solidl - 100?. RD 0528 Metbeetyllc esters of fltfi alcohols. Body -24-2#. A. V. 9.25. Color 11 - 12. Solids - IOC*. RE 0526 Chintvood fatty acid eater of soya alcohols. Body - 2, +. A. V. - 4. Color - 15 - 14. Solids - 100*. House paints were node using 40* of the oil as RD 0595, RD 0528 and RD 0528 in conjunction vlth 60 (2) row liasaed oil. The asparlmantsl paint* ware conpered vlth SHF Rax 471, Card 65 for brush ing, flow, gloas and drying characteristics. The three vehicles appeared to be definitely inferior in drying end gloss characteristics as oaaparsd vlth a heat bodied oil such as (510). RD 0528 and RD 0520 appeared to here a false body that washed out vhen pipmnted, ae indi cated tp the foUoviag data* SHP_ Gloss Whites Drying Vehicle Vleoositr-#5 Properties Batch. Iwttfl-------- fresh O'Blts. Brushing Plow Set O'Hite Gloss 541 Q RD 0555 50,5" 26.8" 40* of oil Good Short 12 hr. Very 15 nln. soft Rather low 551 Q RD 0528 16.6" 19.4" Good, but 9 hr, Soft 40* of oil too thin 10 nln. 540 Q RD Q8M 18*2" 17.6" It n 9 hr. It 40* of oil Rather low Good 525 Q (510) 27.4" 57.6" Good(-) Good( -)6 hr. Good Good 4G* of oil The Resin Besearch Dspartaant also admitted RC 8026, an ester of Maleic inhydride and linseed sloohols. This staple was used for the total vehicle solids in SWP. Paint aade vlth this astir was very ltapy and rubbery in nature and the liquid appeared to be gelling on the sur face of the can, which would indioete that it is veqr unstable. 0007--SWP-044313 0007-SWP-000113683 --TSISrtf ^ a *;. Paint Research October, 1961 -16- #97 - Coat. Panels 16261-90 CS, CM ware prepared for exposure. Tbs paints Include tone whites which oeuld not be included in tbs largo scale teste on tbs special fence at Chicago. Also tests of varlwi* SUP Tinting Vhites shaded to Chelsea Gray Rex 474 and Colonial follow Rex 465. One top coat over Rex 450 Undercoater on bevel siding, Chicago south and north vertical. Panels 16556-76 CS, CS were prepared for expoaura to cover all the exterior boose paint undercoater* and top coats used In the 1951 house tost program. Cedar bevel aiding vea used and exposures are at Chicago aoutb end north vertical. A test was completed at 125rd Street and Cicero Avarua, on a paraceage of the Aleip Reformed Church. This wee a 2-story aquare frame houae, wall-located and practically unshaded. Built in early 1947, the bouse showed no eigne of general neglect, but looked very bed be cause of rusty nail-heads snd comer plates, considerable pealing and general erosion and cracking. The siding is redwood. The walls vers insulated, and it was felt that this was the Min cause of the rusting and peeling, end that acre trouble was to be expected. Having reached an understanding an this point, it was decided that the most useful procedure would be to "uniform" the houae at this time with regular Rax 460 SUP Undercoater - 471 SUP Gloss White and try out various methods of oopiag with blistering end peeling if and when it develops. A cost of KrcmUc primer was put on the comer-plates, after virebruahlng, but no particular pains were taken with the nail-heads. Moisture meter readings were taken, with only a vary few spots fbund to be over 12, except that the north side ehowed 17 - 222. Besides the regular Rax 460, C 811 B and Rsx 471, C 1101 (used in all house tests this year) tw special Rex 471's were tiled as mors or less short tarn dirt collection tests on the east side) RB 5281 R - Basic Silicate whits lsad and 1424 dry. RB 5502 - Using high basicity leaded sine. A test was ooapleted on a new garage at 16615 Gottscbalk Ave., Homewood, Illinois. This site was chosen because of the accessibility end the open south and east exposures. Regular Rax 450 Undercoater, C 811 B was applied on all sides. Hegilar Rex 471, C 1101, Card 65, 175 pounds of 2132 dry Titsnox HC HT was applied on part of the east aide only. RB 5482, all 1405 anatase TiOa wee applied on the entire north and vest (front) and one section of the south. In approximately 4-foot vertical sections an the south the following paints were applied, in addition to RB 3482i 0007-SWP-044314 0007-SWP-000113684 Peint Research October, 1051 -17- #97 - Coat. KB 5474 - 183 of 2X74 noo-dulkiag rutile TiO, BB 5478 - SZt of ,&74 RB 5477 - 263 of 174 KB S47S - 503 of 2174 (alas on past of aaat aide) Rod bricks war* arranged at the bottcn of each aaction on tho south, to shade tha chalk wash-down. Though slightly different in brushing characteristics and drying, tha painta war* very closely alike la sppearaee altar ona veek. A bouaa teat was completed at 10611 Christiana Street, Chicago oo a boose which bad bean used for test purposes twice before. Beoaase of (a) pealing above a porch roof and (b) the building of a substan tial addition, the owner wished to repaint the attire house althou^i we wuld not hare recommended it for another pear. Rax 460 Undereoater, C 611 B regular, was uaad an ell parte, and ell except tha north side vae finished with Rax 471 SUP Gloss White, C 1101 regular. On the north aide, the following dirt oollaction tests were applied, along with C 1101 as a central: BB 5278 - Card 49, 1405 TiOa-BCHL-leaded zinc as 511 and 414. RB 5278 - Card 57, 1405 - no BCWL - leaded zinc as 412 only. The painting was dona tjr tha owner, and ha reported do appre ciable dlffermees in application or appearance of tha test painta. Penal# 1SUV42&7 F, C were reported on after 56 months' exposure a* Florida and 45 months at Chicags, vertical south, all white pine bevel u<g- Both series contained both Rex 450-prlmad and 2-coat self-prtand work. Tha painta tasted were all Rex 471 SUP Gloss White of 6-15-4 (all-linseed vehicle), coopering six materials submitted, ty the former Tarnish Research group as plasticisers. 53, 103 and 153 of each of the following alkyd type resins were incorporated into the formula, with corresponding reduction in both raw and bodied oil volume: 0007-SWP-044315 0007-SWP-000113685 m 1 Paint Research October, .1961 -18- 197 - Cent. A. Mad* with Ocarina, 3 parts, plUs dibasic add, 2 part* nd (44), 4 parts. CVR 814, succinic; CVR 611, adipic; CVR 609, sebaeic. B. Ml# with glycol, S parts, plus S parts add and 1 part (44). CVR 629, succinic; CVR 630, adipic. Also CVR 651 mb * as CVR 630, but lover aonemtratian, 2 parts glyool to 2 parts add. In ganoral, thara war* few, if any, rasults of Importance to the house paint fomnlator. Being on as inferior wood and exposed S and 6-1/2 years, there was considerable failure, but after allowed* war* aade, no trend could be Been either with respect to ooarpositicn or concentration. Test sections were alaost without exception tb* sen* in appearance and film integrity as the guides. A special teat of .003" draw-dome os glass was pot on 60 south exposure at Chicago and aoanlned for 4 nontha (March through June). Son* eased showed increase# of toughness and elasticity at the highest, percentage of plasticizer. Although son* filas (particularly with glyool) becaa* tougher than the regular, several beoaaa eery brittle, and none aaeaed to be particularly note "elastic" then the regular. In connection with the investigation of bodying agents for SUP, the agent# listed below were evaluated as viscosity aodiflers for oil based paints: R rad R 449 Viscosity Modifier, from Boas and Rowe, Inc. #T0TT Bodyihg Agent, froa Frank S. Lewis, Inc. The latter agent ia identical with the X-151 Enamel Thickener used at the dbbsbete plant. The two agents were oonpered with Troyhyd and (524) bodied linseed oil for reactivity and stability of both'' when used in SHP Gloss White. The various test paints have bean in storage for a period of approximately two weeks. During this period they have been checked for viscosity at the periods indicated ty tbs data listed below. In general all paints bodied with these agents have a tendency to decrease in viscosity over a period of only 12 days. Prom the standpoint of re activity, 7077 Boeing Agent and (524) were quite similar. Tha R and R 449 egwt from Ross and Rowe, Inc. did not have any bodying action in this femulation. 0007-SWP-044316 0007-SWP-000113686 10 oz. (548) 1 os. (524) 3 10 oz. (548) 1 oz. Troykyd 3 10 oz. (548) 1 oz. R and R 449 Viscosity M odifier Bodying Agents In SWP OIo bb fl!r.Safo Paint Research October, 1961 -19- 8ro W8 8o I o* CSt*?onHSON^ IJ 1 a SHCb?HOo oS: Is So 14 5?6 P toa 8 3 'S 8 9 TCOfl P 8 8 8 oo 9 P Ol TO CM f9fl W 09B 3 S "S js 3 CD 8e OB 03 to 9 TOOl 095 8 8C9* q> 3 > I iCM 8 Oo p & <s "o gs g ? & <s nO N0 g' CD to i g Pft T9O TO 9 ws 8 P o 35 S CD CD V01** 8 V) PTO TO 05 CD sr <5 (35 9 p 8 8 8 cn 04 ST 5 3. TO 05 (0 PfCtl T*0O 3 0007-SWP-044317 4 10 os. (548) 1 oz. #7077 Bodying A g a it 0007-SWP-000113687 T*' ' f-f - LO os. (S48) 1 oz. (524) #97 - Coot. PainV Raaeafeh October, 1961 -80- S(0 8 8 <0 > JD OP njr S nI CM iS fiS* ! t a 2 10 oz. (546) 1 oz. Troykyd 3 10 oz. (548) 1 oz. R and R 4 10 oz. (546) ? It? iesn .*o t" (HS* OM .N.. xojy BS* g ! a H* C M . 8 CM 3 ? 89 S8 N t* >-g N M0 <* '-** -1 ai O ?CM IS 5 00 a 8+ o -a 8+ a H 9 3 W CD a 8 0a0 3 to 3 CSO ft* ? 8 50 "1o>*8 iCD tO ro *a 15 5 % s5 tCOM S g s CaD o> 3 * GO 3 rao 9r? *8 9 H 0 0 (0 3 9a P i ra 9 <5 a + Pa P S 23 3 >S 05* H *4 B ttoo AOH* E9 8* 9a 9a cau *B + fIa? 54" k kto 8a C*M3 5 8 tCoM 'S TaO 9a a 1 oz. #7077 Bo[tying 449 V ia. Mod. A g o it 0007-SWP-044318 0007-SWP-000113688 . : ***--*'~-'ftf.' #97 - Coat. Paint Kuurch Septenbflr, 1951 -*>- In repainting these penale for continued exposure, (a) 1 coat of Rax 471 was applied to thol-coat job, (b) spot-prising of bare areas plus one coat of Rex 471 was used on the 2-coat panels and (c) spot-prising plus Rex 450 and Rex 471, a thomutfi re-painting job, was done on the 5-coat panels, Tbus,!ve oontinue to hare a display showing unpainted wood against paint jobs which night ha called very thorough, nonaal and bare niniaun. Although the display cannot be ranored fron the fence, photos are ar&llabla. 0007-SWP-044319 0007-SWP-000113689 September, 1961 m r-Pwt, -19- Panels 12151-6 G vsre examined after 4-1/2 years' exposure, vertical south, at Chicago. These van Douglas Fir ptywocd panels, mounted as most of our plywood tests, two 11 x 17 x 3/6" panels on a frame with tbs edges coveted partly ly moulding and partly by caulking. The material tested Is "Prsnite," a saml-peste formula developed at Oakland in 1946 for use on plywood exteriors of prefabricated structures. The formal* Is essentially 366 pounds of 412 leaded sine, 222 pounds of Surfex, 60 pounds of 2050 titanium and 109 pounds of 686 asbestos fiber In s linseed vehicle. Green, yellow, rust and grqr shades vers tasted. Application was ty brush, with a deep stipple affect, and ty roller coater, also quite rough. The material was applied over CB 8286 Prefab Primer, with and without 07-679 Kan Vood Sealar. In general, the systems looked considerably better at three to four years than the average of the main plywood test series using SWF and other qrstmu. This might be expected because of tbs heavy build of film, but apparently the asbestos fiber imparted a resiliency which almost eliminated the usual film cracking. Ssrlous cracks showed up at 2-1/2 to 3 years, but tluy were apparwitly long, deep cracks due to stresses in the wood end did not multiply or progress to serious film flaking. There ssoed to he no differences due to the use of e deer seeler. Panels 11634-9 C were examined Airing the month. Theee con sist of 12 panels on psnnent exposure vertical south at the Chicago fern, testing (a) one coat only of Rex 471 regular of late 1946, (b) regular Rex 460-Rex 471 end (e) Rex 460-460-471. These 1, 2 and 3-coat ^stems were put on the left half of oedar, yellov pine, white pine and Douglas Fir bevel siding panels, tha right half in each case being left unpainted. The exposure time to date Is slightly over four years. The unpainted sections showed serious wood erosion or "corduroy effect* on the oedar panels, starting at about one year, and about the aeae on yellow pine but the wood is in much worse oeoditlon. because of warping end cracking* White pine and fir boards ere about like the yellov pine emoept showing noticeably less wood erosion. The one coat Job was almost entirely eroded away, and considerable of the above wood failure* had show up. The 2-ooat Job was considerably better, especi ally on cedar, because erosion had not penetrated to the wood. The 8-coat job showed sons bracking on the pines but looked good except on close inspection. 0007-SWP-044320 0007-SWP-000113690 Paint Raaaareh September, 1961 -18- *9* - <** 16171-9 C, P. A comparison of regular SUP tint base, the former Pelntereraft Tinting Vblte, and a special tint base made Ip the Cleveland Technical Service Departst for Mr* Bolt. The last named contains S77 dry Plaster of Paris. Each vaa tinted to the shade of SUP Colonial Tallow, Plymouth Green and Ueetchester Gny. Exposures will be eauth vertical in Chloago and Florida. 16240-8 CS, (X and F. Testing Cl^r Blade MR-107 from X. 8. Dickerson, Jr., Merehantville, H. X., aa a possible replacement of tha black pigment and part of the Inert of SUP gny or blade palnte. For exposure ecuth and north vertical Chiotgr and south vertical Florida. A bouse test urns completed at 107 Detroit Street, Calumet City, IUlnoie. This was a repaint job after only two years' exposure of a previoue tost on a new house. Rusting of nail heads was the main reason for requiring a repaint job. The painting was done by the owner, and used regular Rex 450 Underwater throughout, plus Rex 471 SUP doss Vblts as follow C 1101, regular, card #65, titanium oontent aa 82.52 2132 dry RGHT/ 57.52 1405 anataaa T10,. - RB 5457, all 1405 anataae TiO,. RB 5458, using 1408/2174, R 610 titanium at 80/202. A bouse test was completed at 4224 Towle Avenue, Hamnond, Indiana. This house le a null frame bungalow presumed to be in a con siderably dirtier location than our usual test bouses, but otherwise trail situated for a test. Because of the probable dirt collection feature, we used a finish coat oomparisen only, with all primer regular Rsx 450 Undercoater. For the finish ooat, Rex 471 SWP Gloss Ublte vasteeted aa follow C 1101, regular, ul #66, titanium content aa 62.52 2132 dry Titamox RC IT/57.52 1403 dry anataaa TiOa. RB 3277 R, card #84, 1403 anatase/21S2 at 2 parte to 1. RB 8278 R, Lowe Brothers pigaentation, roughly 50;5 2132 dry, 103 1405. 0007-SWP-044321 0007-SWP-000113691 -uVu*'0'-.'' Paint Research September, 1961 -17- *97 - SWP (formerly "SWP 471") The Vegetable Products Research Laboratory submitted a gallon of linseed oil AVM-6S, produced ty the nixed solvent extraction method, for test in SWP. The eolvmit extracted oil was compared vith regular stock (2) raw linseed oil. Test batches of SUP made vith each oil were compared for brushing, flow, drying, etc. (See Monthly Report for March, 1661.) Tbs original paints ware placed la storage last spring and were examined after six months of storage. The sample of SUP made with regular (2) raw linseed oil obtained from the factory had excellant package condition wberaas the paint mad* with the adzed solvent ex tracted oil had bard settling on the bottom of the can. Testa are being held in storage to check granulation tendencies. Exposure panala 16180-6 CS, CM and P wars prepared to test durability and general performance. Chicago south and north vertical and Plorida south vertical. The oils tested in this group include regular () raw linseed oil from Kensington stock, AVM-65 mentioned above, a special (510) AV 1187 heat bodied oil made from, unrafrlgerated end unbleached (44) and a (510) control made frc*a the seme lot of original oil as AV 1187 but after refrigeration and bleaching of the (44). Other pntals prepared for exposure during the month Include the following} 16158-66 CS, CM, P, new and repaint. A test of Lanlnar, rubber grade ground oyster shells, offered ty the Laminar Calcium Corpora tion. Laminar and 2307 AA miea are compared as % of the total pigment in SWP Gloaa White. The paints are applied as two coat work (over SWP 450 Underooater) on new cedar panels and one coat over weathered panda. Exposures south and north vertical Chicago and south vertical Plorida. 16186-70 CS, (9 and T, Testa of 2Q( sillcanated oils RC 8877 (body B) and RC 8879 (body 64 see.), prepared from FleSkaa1 * Silicone C, an ethoxy adlioone as the vehicle in SWP Rex 471. The experlswtal paints ware rather short in flow, had batter drying properties than regular SWP but showed a tmidaney to wrinkle with standard quantities of driers. Exposures will be south and north vertical at Chicago and south vertical in Florida. 0007-SWP-044322 0007-SWP-0001 Angust Research Au#ut, 1361 -18- m -mm Rasta Research sutaltted a sample of Magpesium Rosin Amino D RC 955 for comparison with boat bodied linseed oil (524) end Troykyd aa bodying agmta In boUM paint*. RC 9256 la lnsffectiva, tut it should be pointed out that ihan (524) or Tteylqrd la addad to the finished batch of Rex 471 initial viscosities are high but such of the Increamt is lost In Isas than a south's storage. dibbsboro haa reported In their Msy-June 1951 Teehnioel Service Report that lnoreaee In flow and gloss of house peints due to additions of Kheotol are only tsnporaiy. We rechecked the flow properties of Stiff Induced ty Rheotol both when added to the grind end then added to the thin-down. Additions of Rheotol amounted to 1/4, 1/2 and lA ty values. Whan the Rheotol is added to the thin-down there ia a very definite increase in flow. However, over a period of two weeks the flow gradually decreased so that only minor iaproraaot could than ba detected in the l/4 and 1/2* additions. The batches made with the Rheotol in the grind showed aoaawhat leas Initial flow but the flow haa net decreased to tl asms extent as whan the agent la added to the thin-down, further brushouts will ba mads after more extended storage. Panels U046-16115 CS, Of and T vara prapared for exposure. This is a cooperative series arranged with the da Pont Pigmsnt Division and include paints fra both S-W sod du Post which will ba coopered for performance on their exposure site and ours. The S-W paints consist principally of studies of various titanium pipunts in le*d~oonteiaing end lead-free white house paints and la lead-oontaininf Colonial fellow end Gngr tints. The tints also compare mapiaaiia sllleate end ealeiaa carbonate extsmdan. The du Pont paints include aimliar conventional formulations, also oalelum carbonate in whites and their Stain Resistant Ti-Pure RT-majpaalm silicate white. Their tints siso Include load-free fonulaticns. Poll details will be gLvm in subsequent progress reports aa expoairs remtltadwelop. A test WM ewplatad during the month on a new garage at 18615 (Witteahal > AMUS, The garage, of fir drop elding, was. primed with regilar Bn 450 Aedsmster and finished with severs! sample/ of Rex 471 SWP Gloae White ueing various amounts of rutile titanium. The specifi c purpose was to have a teat parallel to the special fence test at the expomirv farm on which the wash-down of chalk is observable ly the use of red bricks below each section. The following Rex 471 samples w o t s used* C 1101 etoek - card #65, ueing 175 pounds of 2132 Titanox RC-UT 5B 5432 all 1403 snatoae Ti-Pure FP. BB 5474 18% of2174,R-610 rutile. HR 5475 30% " " " HB 5478 22% " " RB 3477 28% " 0007--SWP-044 32 3 0007-SWP-000113693 Paint Research Augist, 1M1 -17- #9T - Coot. Thasa paint* arm(ad an the south aid* of the building in order of increasing ItrCLO content, vlth the full asatase staple oa aost of the other sides, and the 305 R-610 sentpl# on tha east as veil ail south. Pansls 11611-28 P, C war* examined after S pears at Florida and 4 pears at Chicago, vertical south, all oedar bevel siding priaied with Rase 460 Underwater. The Florida group had bean delayed co acoouat of tw previous special studies of tha peasla* Tbs series tests various sine oxides in Sex 471 SUP <Eoss 'shite on a Mechanical aix basis at 323 of pigment weight (regular percentage), 233 and 1Q(. At each level, a eaaple using 412 oo-fUaed leaded zinc as tha celp source of sine oxide is also tested. Tha sine oxides uaad are XX-692, XX-60, XX-50S and Aso ZZZ-ZZ at each level and St. Joseph's #44 and #17 at the 3$ level enlp. So nsnp points of Interest have ooue up is the hirtorp of this aeries that space pemlts mention of onlp the nost inportantt (a) At apprarlmtsly one pear, the nildev fievth wu interesting in that the oo-fUaed staples at all sine oxide levels rfioved less than the mechanical alxss, la spite of a lover total reactivity. Auxiliaries Basearch has inquired further into this. (b) At abmt two pears, there were no greet differences in fils durability, but tha lover levels of Mechanical alxaa were alightlp poorest. (c) At the ml of the exposures, these diffemcee vers ooneiderablp greater, except.that at Chicago, lAere eroaion predominates, practically all ssaples were equellp poor. St. Joseph's eeterials, however, do sees to resist this erosive tendency autprleingly wall. (d) Oseehlwg aad otucfclag tandwoies at Florida (sad of exposures) 1. Better Anwbllltp et lover zinc levels. 2. Batter durability with co-fuaed, but with a decreasing margin at the lovsr levels. 3. Unexpectedly poor results with Azc ZZZ-33, the other regularly used materials being quite similar. Ye have usually had comparatively good results with ZZZ-53, but this is not the only test to show the reverse. XX-603 was possibly the best of the others. 4. Very poor results due to both St. Joseph aaterlsls. 0007-SWP-044324 0007-SWP-000113694 #97 - Cont. Pastil* 12954-85 F, C wan exnlned aftar SO nontha* exposure at Florida and 36 months at Chioago, vertical south, all cedar barel aiding panala prtaed with Rax 450 Usdarooatar. Thata are tests covering sine oxidaa from tha St. Joseph Laad Company in Rax 471 SWP Gloaa White, Rax 456 SWP Puma Raaiatant White (landless) and Rax 472 SUP Mildew Rasiatant Treated Whit*. In Rax 471 and Rax 472, the haste test formulas are on a mechanical mix lead-line basis, and in the case of Rex 471 and Rax 456, both normal and lov line oxide 1avals war* used. The zinc oxldea tasted, besides ito ZZ2-53 as a control material, are St. Joseph's Grew Label #42 plus three experimental pigsent* basad on It. These contain 0.013, 0,20? and 0.54,3 (called lov, medium and high) of chlorine deposited an the particle surfaces In the font of zinc chloride. Unusual mildaw resistant affestlvtbass and durability vere clelnad. Space doss not permit tha oonplete proamtatiou of the Inter esting results noted is the early stages and at the present (all taste are being retired) * In general, tha Chicago panels ihoved no Important trends until late in tha expoaura period, when all the St. Joseph mater ials, including Green Label #42, shoved ouch more serious checking end cracking than ZZZ-SS and tha co-fUmed guide sasplas, but considerably leaa tendency to erode. The nos* interesting results vers seen at 12 and 18 months on the Florida tests. Tha lov zinc oxide group kwved heavy mildew, and there was a definite taodmaqr toward lass mildew growth with increasing Cl oentant on tha special samples. The aeries as a whole shoved this tendency, roughly speaking, but on the other hand tha earliest signs of checking appeared on the St. Joseph ample* (including #42). A rather surprising result as this failure progressed (18 norths) was a very good showing of #42 and the Cl-treated samples la the Rax 456 group (highest ZnO content at'57?, no lead). At the end of 30 nonthe Florida, however, these samples, with tha possible exception of #42, bad failed consider ably end the oo-tamed Rax 471 and Rax 471 guides were the only really satisfactory paints. The bast final showing of tha St. Joseph material a was in tho Rax 458 lov sine content group) in feet, this group turned out to ba the beet la all-ercund durability. 0007-SWP-044325 0007-SWP-000113695 Paint Raaaareh July, 1961 f97 - 8HP 471 -18- A aorle* of point* *r* prepared to *raluoto th# tint ratantion, gloat retention and durability oharaotar iatioa of th* lott thrai P.C, SWP Tinting Khito C78 TM (no* Rax 476) revision*, Th* point* or* thod*d to Coloniol Yallcw ond Ch*l**o Cray* Pan*la or* to b *xpo**d ot Chioogo and Pier Ida, A **ri* of pon*l* nu*i>*r*d 16014-17 *ri prepared during th* noxrth for axpoaur* ot Chioogo, Coffoyrill* ond lUanl. Thl* 1* o long rang* a*rlaa watering 160 ponol* in oil for ooaparlaaao of laod-ln-oll orau* ARP two ooot and thr** ooot systems, Th* wood* uaad wars oodar and Douglo* Fir boval aiding, Th* ponol* or* pr*por*d in 6 aata of duplioot** for *ooh point *o that on* pair of aooh oon bo retired ot tha *i)d of *aoh year* In thla way w* will obtain a valuable aat of oo^tariooon of th* performance of laad-ia-oll worn* rrady alxad point ot 1, 2, 3, 4 and 6 ywor* far *xhlbltien purpoao*. Thay eon b* uaad to ocabot promotion of load-in-oil, Ponol* 1027S-6 C wr* r*tlr*d r***ntly after 6 year* xpoour* at Chioogo, vertical aouth. That* ar* 6 x 64" idilt* piaa board*, prin*d with R*x 460 Vnd*reoot*r ahod*d gray ond flniahad with (a) Rax 471 St? Olon* Kbit* uing all 1406 onoto** titonim axida, (b) Rax 471 using 50/t0% 1406/1276 rut 11* and (o) Pittsburgh'* 1-647 Titonio thlto, W*- had available olio th* r**ult* of exposure for shorter period* ot Florida and at Chioogo oo ragular o*dor aiding, Th* (o) ond (b) oomporiaon raaultad about oa would b* *xp*ot*d, th* 100J1 onatoa* b*ing olaanar and ahitar than th* bland, but *ubj*ot to nor* ro*ion, Th* Pittsburgh aanpl* waa oven olaanar and whiter than (a) throughout th* t*ta, but its durability r**rd woo not oa good. It ahowwd swim* rooion ond orooklng aoonar, ond waa flaking off wary badly a* it appro*oh*d 6 year*, although th* tit board was of slightly better quality than thii other*, Boterior Blour tarnlahaa Oonaid*robl* tin* was darotad to th* prsparation of olaar amiah ^o*ura panala. Th* vomloho* inoludod in thla terloa rapraiant a variety of alkyda, phenolic*, *th#r r**in varnish**, sllleoaotod olkyd* to, and son* stole* A few extender* ond pignant* wr* introduced into a United number of Torniehe* to d atermine whathar any boneflta will bo obtained fra* the reinforcing actio* of euah eolid*. Suoh ogunti o* o olio idol hydrotod Iron, Oroon Cold, niso, Santoool ond oolarod oxtondor* were introduoed for thio purpoooa \ \ \ 0007-SWP-044326 0007-SWP-000113696 Paint Baeeareh July, 19S1 -17- #97 - Coat, Panel* 12 947-6S C war* retired at th end of 55 month* aa- poauro, eertloal aouth at Chicago. Thaaa taata Included aeearal t;^paa of eoatlnge intended to preaarTe the natural appoaraaoo of oadar aiding aa wall aa to protaot it frcai weathering effeota. Though rathor limited in soope. tho material* moat ocamonly uied (other than oloar weraiiihea) ara teatod, Th* roaulta Indioato tbit thaaa aatorlala, though not aubjaot to tlw adhatlon troubles enoonntered with oloar varaiehea, ara atlll far fra aatiafaotory In appearance and prcrtnotion. A brief dlgaat of materiale and r oaultai Bara oadar wood -- Orain-rale lag and bloaohlng in 2 or 8 aontha. Light oraoka at I your, gradually iaoraaaliag to aarioua oraoka. Craoaota Oil -- Oood for about 1 your, though apotty In ooloir. Aftor IB aantho, lnarauaing grala-rala lag anl wood oroolea, OJ 104K, OJ 10611 and OJ 104KA -- lliwaad oil plus hodax Cobalt and eoppar fungidioo, plua Dowlo Ida 6 and with out fungiolda. Color apottlnoM rth*r eimilar to oraoaota. Aftor 1 year, nemo wore elgnifloantly batter than the bare wood la durability, Bax 498 SV Shingle Stein, rednoed -- fair up to 1 year, fairly unifora dark color. Crooking and flaking pregre,(od rapidly during looond and third year. Final appaareaoa poor, but protootIon of wood etlll roaeonably good. Bax 486 CTP VfHMr Brown, over Bax 460 Underoouter -- Bo failure. 0007-SWP-044327 0007-SWP-000113697 Paint hmwli Jun#, 1981 -17- f9Lr ggftVi. Panala 1SS5S-6 F, C wan axaninad aftar 4 aootha' expoaura at Florida, vertical aoutt, and |4 aontha at Chicago, north and south, Tba taata art aasatially a oonparlaon of two paint* only, on th* ami board (eadar banral aiding) > Ban 471 8WP Oloaa Vhita, regular, nada with (S) raw and (810) bodiad linaaad olla and th* aana sad* with ConopbOT oil raw and bodlad. Th# Compter oil was raportad on from bigland la th* tuguat, 1940 lane of Chanloal and Engineering 8*ws, and a aanpl* was obtained fna Lawl* B#rg#r and Sen*. Th# palate warn triad over Rax 4B0 Ondarooatar Vhlta and also ahadad gny to aphadaa awalon. In th# latt#r oaa# at Florida th#r# la a vary alight advant age for th# ragalar, which nay b# da* to allgiUy graatar aroalon of tb# apodal, bat an th# wtalt# prinar p#nl th# ep#dal look* folly aa good aa th# ngalar, with no film fallnn In any oaa#> Th# Chicago panel# ahow no difference* of ay aigiifieMW#. Eroalon la atill only alight. 0007- Faint Research June, 1961 -16- #97 - fig 471 Two of the cooperative peint npomr* aeries - those with St. Joseph Lead Coatpany and Titanium Pigment Corporation - were finished during the month. The palate for the da Foot coopemtiva aeries are all reader and the painting of the panala will begin in July. A general description of the various Bailee was given oo pages 16 and 17 of the April report. Taste with the St. Joseph Lead Company ware designed to compare their sine oxides with those manufactured ty other pro ducers. The Tltanim Pipsant Corporation and its Fast sariaa are direoted toward oos^ailsons of exposure locations and titanium pig ment oemparisena. Th# penal aunbers for ths St. Joseph series are 15954 - 56 C, K and F and for the TFC series 15856 - 72 CS, OT and T. Mr. Fasig and Mr. Tan Loo made thair annual inspection of the da Pont Pipunt Division exposures et VUmlagtan, Delaware and of Titanium Fipwt and national Lead (bade slllosta exposures only) at Ssyvllle, Raw folk. A report will bo prepared and circulated. Panels 12505-29 T were examined and retired after three years' exposure at Florida, vertical south, cedar bevel Biding panels primed with Rest 460 Underwater. The tests oovar styrsnated oils used in ta 471 SUP Gloss Uhits of 7-29-47. Tbs special oils used, mostly from Resin Research, arai (a) 40$ with 80$ (798) - (5518) soye-CWO (for general oomparison), 50/60 linseed/styrene, CW/soya/s^rrene, Fentek reein/eoye/styTene, glycerol resin/ecye/styrene end Isolina/ styrene; (b) at 50% with (798) - llnsewvstyrene, Ieoline/linseed/ styrene and Dow X 568 linseed/styrene; (e) also a CUD/llnaeed/atyma at only 26$ with (798) and Dow's X 567-40 castor/stymie at 45$. Since these paints all have at least 60$ (798) blown linseed oil in the binder, it is not e particularly harsh test of styrene as such. All Florida testa are setisfactoiy la both clean-up and dura bility. Ue feel that tha us* of these vehicles could be reccoMDded, althcngh none are noticeably superior to tha regular. Minor variation s fron tha average ares a. Linseed/(5516) at 80/40$, rather dirty. b. KB 6878, a CUO/seya/etyrme, definitely dean. c. RB 5688, so leolineAlnseed/styrsne, definitely dean. d. CM (2265), using linseed (44)/styrene, alight checking tendency. Chicago panels, north and sooth, art not being retired, but were examined recently at SB months. The tests in general look good, inducing many of the edf-prlaad pends. Pentalc-eqya and glycerol resin-soya samples seas dightly best all around, while CUD-soya and CWO-linaeed are very dean, though eroding. Dow1 a X 567-40 end CU (2255) seem definitely on the poor side, mainly due to erosion. 0007-SWF-044329 0007-SWP-000113699 ?alst ltMMrch May, 1961 -18- #97 - SWP 471 Tha nmm Dtrltlon of I4bbcr-0vw>t-Pord Glnat Caspar oub mittad tvo taaplaa of 90t rilloooatad linaaad oll-fbr aralnatien. Ono aanpla had aa R bo$r and tho othar a bodr. Tha two oila wart flret oaaparad with linaaad olla (810) anf (786) for drying charactarlatica uaing 80* laaa drlar with tho gUloanatad olla that with (510) and (786). la tha Initial drying taata, * latxodaoad tha aow paroaotago of load and aangaaaaa. drlar aa uaad da SWP baaad on tha waight of oil. Tho ailloooatad olla had a taodanqr i^o aarfaoa dry md vriaklad badly on diylng oaar night. Drjrlag of ClaayOll Filaa (.008 inch run Ortr aiaht OJ 958 P (810) plut drlar OJ 967 P (785) plus drlar OJ 958 P 20* Siliooaatad liaaaad, body R plat dri-trt. OJ 969 P 20* Siliooaatad llnaaad, body V, plut driora. 2 hr. 10 ala. 5 * 10 * 2 80 * 8 * 10 * Good Good Good* Good* #BadLy wrinklad film. V. Tha Raala Rasaaroh Dapartaaat pvaparad a 20* aUiooaatad lir.aoad oil using Plaakon Silicona C and alkali raflaad liaaaad (44), autadttad aa BC 8877. Thia oil and Plaakon'a 80* aUiooaatad lingaad, body.8, war* ooopared with (810) and (788) aa la tha abort toot axeaat that wa aaod only land tallata drlar with tha atlioonatad olla. Tha ohjaot vat to aUainata tha vrlnldiag inauntaiafl la tha initial taata. Viih only load dziar praaaat, tha aUiooaatad olla did not vrinkla open drying hah tha aat-to-tooch tlaa vaa axtaadod and tha ortr ai#t drying c b XC 8877 aaa aoaawhat inftrior to tha Pladraa 20 sill- caoatad liaaaad, bodjr R, tad (510) which ooatalaad both lead and aanganaaa drlar. (Coat.) 0007 --SWP-- 04 4330 0007-SWP-000113700 *? Paint Research lfay, 1961 -17- - Coat. OJ 956 P OJ 967 P OJ 978 F OJ 984 F <anr u ruat Piyins Set-to-toneh Ot t Wiifct 100 ee (810) 5-5/8 oc (901). 1-1/4 ee (545) 5 hr. 55 adn. Good 100 oe (785) 5-5/8 ec (901) 1-1/d cc (545) 5 55 * Good (-) 100 ee 5 ee HC 8877 (901) 7 10 " Good (-) 100 ce 20% Sllioonated linseed, body R 8 50 " Good Three pj.gMBbed paints vra aade end eoapared for drying baaad an the folloving cil and driar oaubinatioeej Flnaited Paint OJ 979 F Oils (ao) (2) Sxlsn (901) (645) Prying Over ViAt 4 hr. 45 ain. Good OJ 980 P R2 8377 (901)* 12 " 45 * Sllgitly soft OJ 9*1 f K3 8877 (901)** (645)** ! SO Good **35f laaa (901) than 979 P. **20% laaa (901) aod (548) than in 979 P. Faiata 96 P and 979 F shewed about the taaa drop la gloes after being expoaed to ultraviolet light and heat for a period of several hours. Voxk la being continued on thle pxohLaa. It Is our plan to expo as axperhuntal paints node with these oils this spring. 0007-SWP-044331 0007-SWP-000113701 Paint jjossenh H*, wn m.,,r-2n%x Finds 15650-4 C8 CS sndF van prepend for exposun during the aonth, tha ixpoeurii ta b* earth and north vertical at Chicago and south nrtlcsl at Hlmlj Tha paints an variations of SUP Gloaa Vhita to rraluata tha tof^bility of two SO* bodied aoya olio ItC 8105 and PC 8104. A nail .nwnt of Span Plain was und la BC 8105, but none la PC 8104. Vis49aiU.11 wan Zg for PC 8105 and Z% for PC 8104. Tha oils vara uaad,la a apadal SUP fonula at 3-1/8 pounds of oil par gallon but pc 6105 was also oaapered with (510) bodiad llasaad la regilar SUP at four pounds of oil par gal* Ion. Tba aoya paints had good flow, gloss and drying pnpartLaa but wan stickler la brudilag. Panda 11521-9 P, C wan axmlaed aftar 56 anatha' exposure at Florida, vertlcd south, and 47 nootha at Chicago, north md south. Thaos an eadar baral aiding ptiaad with Pax 450 Ondarooatar, and carrying ragular Pax 471 SUP (Host Whit# of 6-15-46, 1005 1405 aaatuaa titsaiun oxide, aa tha guidi paint. Tha following titanium# ara oatparad In this Pax 471 foxailat (a) At 605 with 505 1405 dtp 2175 Ti-Pun A-BOO 269 Tltanox RAflO-NO 2080 T Tltanox AA (b) At 265 with 7$t 1405 ivy I ft * \ 2229 Ti-Pun R-610( ) 2174 Ti-Pun *410(1*11 non-chsiking) All datalls of past axaalnatLans would hs neoeesary to sniluati this saris# fully, ad to do justice to it# value. One of tba nost gmaral findings has ban that thass mi- and full non-chalking titanlaa pi manta my be expected to give satisfactory appearance la Pax 471 uhm t&mdad with at laaat 505 of 1405 dry. 2050 diy blinds look dean cod white at all locations, although tha bland has not minimized erosion at Chicago (ralatlTi to 1005 1405) aa such aa night ha expected froa the fact that 2050 is used at 605. A rather surprising result is with <174 at Chicago. It look# bast of tha group at 4 yean, largely because of its siov chalking and low erosion, and furthetaon a chock of ell past ratings at Chicago shows that it ninr was aotiosably non dirty this ths 0007-SWF-044332 Paint lunnk Mr, 1951 -19- areraga. 140S/m alia look* good, although eroding quit# aarloualy. 0.75 saana generally poorest, partly baeauaa of ita raooid of yellowjaiis, but alno largely booaaao of aotioua film failure, both andan and crack ing. Othor blende ham baan quit* oondstsntly allka - (lightly laaa aroalqm and othar film fallura than th* gold*, but haring a alight diaadraataga ctaa to dlrtlnaaa in tha aarllar stages* Sarlaa 11580-5 and 11742-55 C9, CV war* aaanlaad aftar approninataly 4 rear*' exposure at Chicago, rartloal north and aouth, all cadar bard aiding panda- That* taata vara for th* purpoa* of datoadalng th* affaet of tha datarganta llatad bdow on tha chalking rata and ganaral aalf-daanlng propartia* of Ban 471 SUP Gloaa Whit*. Tha Oil Resaareh Laboratory had auggaatad that th* datarganta might b* halpful. Sarlaa 11650-5 vma prepared flrat, uaing Rax 471 mad* with aoataao titanlue, and tha othar sarlaa wan put out latar uaing tha sans Rax 471 forad*, but with 2147 aanl-ncnahtlking and 2174 full w^e^K-ive-g titanlima aub> stltutad to Ineraas* lnharant dirt oolleatLco tandanolaa. Za each ossa tha Ran 450 Oadarooatar uaad contain*! th* aama aaount of datsrgant aa tha oorr*(pending top ooat. Sach paad earrlad a gold* oondating of th* oorra(ponding grata* without detergent. Th* datarganta uaad, on a paint wdght bads, warn l.Oii Twaan #51 fron Atlas Powdar Coapany. 2-QjS Triton Z-100 fron Robn and Baaa Coapany. t.ajL Xnolphor DOI, CV (255g) fron Oanaral Dyaatuff. 5.0 Zlno olsata fron OU Raaaareh {not uaad In 11550-5 aarlsa), S.CS Zlno salt of asdaio add, Mae, Thaaa panda were witched quit* closely In tha aarly atagaa, a grain blank pand haring ban placed under each to eetcfa tha wash-down of cbklk. No appraelahla raah-dow oeeurred on any taata. No rariationa fron no sal chalking and claan-up ware arar noticed, axoapt that th* aa^daa using chalk-rvtardant titaniums chalked nor* dody and rauined dirty, aa would b* axpaatad. Th* mly indication that any detergent hatl any affect was in th* oaea of zinc aralsata. Tests containing this agent became rry rough la taactura. This was not notioad until aftar two years. It asens that this aigpt hare baan dua to a alow agglomeration of pigment particles. 0007-SWP-044333 0007-SWP-000113703 Paint Research April, 1951 -16- m -,j w 4?\- The 1951 houM teat prcgran la to be devoted to "protean" exposures, particularly blistering and peeling, dirt collaction, tc, Palata to b# anployed la house taata will include tha following uystensi Onderooatera Rax 450 - Card 54 Standard underwater. RB 8272 1 tine oxlda - baalc ailloata white land - TiLO,. RB 5275 Zindaaa - baalo ailloata white load - TiO,. RB 5274 Zindaaa - baalc carbonate whlta laad - TiO,. - Zindaaa - baalc carbonate white laad - T10t (Vamiab vehicle.) - Zindaaa - baalc carbonate whit* lead - titanium ealelua. (Varnish vehicle.) Bhlta toe ocat fata Rax 471 -Card 49 SUP dose White " - Card 57 - Card 64 * - Card 65 * Love Brothers plpeantatlcn - SWF Cloae Whlta TiO* ULand, anataaa - 1405 dry/2090 dry Tltaaox A/Tltanoac AA TIOg bLntd - 82 uateseAB rutile 1405/0.74 Tltanox A/in Para R 610 High baiidty leaded zlno oxide Battle tltanlun-aagheelue slllcata Battle Utaalia calciw-nagpealun elllcate Ratile tltaniun-oalci.ua carbonate High baeldtr leaded sine CooperatlTe expoaura teata hart been arranged with the St. Joseph lead Conpany, the Titeaiua Pl^ent Corporation end the Pigment Division of font. Testa with tart St. Joseph Lead Coopaay era directed to evsduate their atc oxlda plgrata in eonpaxlaan with those offered by other pro ducers. included In the series are these tine oxide plgaantst 0007-SWP-044334 #97 - catt. Paint Reaeereh April, 1961 -17- Amailoan Zinc Salaa Company Abo ZZZ-35 Abo ZZZSS New Ferny Ziao Ccmpanjr XX-592 XX-60 XX-505 St. Joseph Load Ccapeny Gt s a Label #17 OreA Label #40 Gt mb Labal #42 Paints aa vail as tast results are being exofaAgmd. Tsata vltb Titanium Pipamrfe Corporation and tha da Pent Pignant Division arm directed to point up difference* in tast result* due to exposura location. A sarlas of white and tint test* is being arranged with eaoh ocogMny. In' the whites va are staging titanium pigunt selection for laadlass and lead-oontainlng bouse paint formulas. The tint tests are being nade in both gnqr and Colonial fallow ahadas. These eonpare pure rut11a titantun with Tutila titaniua oalciun plgnants, and magne sium ailicatee with cal dm carbcste*. Mark eontlnmad an the reformulation of SUP Vastchaster Gray. Tms fonmlctioa* vase, developad using' 0KD K 17 Ad OKDH S7 vacuua bodied linseed otta fium iihtl1 Pnldi-Uiflma CompAy. Samples of each paint vers uat hi CLseelam* for thsir inspeotiam Ad approval. By the mss of vaoanm tmdlad oila wa were able to decrease the poundage of Inert in tin regalar-fognala from 890 pounds to 2S0 nd 150 pounds, respectively, dagwiling an'tte bo^r of the ail used. Pa sis 15441-71 C3, (3) Ad r vnre prepared tp* eapoAte at Chicago aouth and north vertical and at Miami south vsTtioal to oover tha SUP Westchester Onqr formulations devisad during this Pa s Is 15564*80 CS, CM and F vers alA prepared during the month for exposure south and north vertioal at Chicago and aouth vertical at Miami. The tests are of bodied oil raplaoAAta for (510) bodied linseed In SVP. Tha special oils Include bodied oils based on tha fol lowing ooopositionei a SOU tung oil modified Aliphst 16A-F.E. eater, a 20* tung oil modified Aliphst 16A glyceride, Heofat 19, a 20$ tung/80* safflower oil, a straight Aliphat 16A glycexyl aster, a P.S. Aliphat 16A 0007-SWP-044335 0007-SWP-000113705 uti-:----- ^V-San*. Paint RtHtrok April, 1951 -18- aster, propene refined soya oil St 828, Swift'a H7t, SQg catalyzed soya, and two styrmated Dafeydml oil*. Expoaura aeries examined andreporfced ckndngthe month Included the followings 1.. 12472-87 T, Cfi and C*. Rcwtiu* readings noted on corresponding Coffgyellle panala,, all at two yearn* exposure. Regular Rax 471 SWP Gloaa Vhita, using 100% 1408 anataaa tltanlUB dioxide and UK# llnaead oil stored as the guide and basic formula far the whlto tests, with a comparable control formula for SUP Tint Base shaded to Colon ial fallow and Slate. One teat formula used 19 gallona of (5518), 80/20% ecye/ohtnawood bodied oil, and the other 1Q0S AVM-14 and AVM-lfi P.K., Sqye Esters, light and bodiad., A previous report at one year indicated that tha P.l. Soya testa ware , at laast as dam as ths regilar, whils (5516) aboved son* tnsdnaey tovazd exeesadjre dirt. At two years, in ganarsl, all tasts are within a satis factory range in ell respects, tut P.E. Soya looks conaietmtly better than (5816), and la sons oases better than the regular. Thera is no really saricua failure, tut in a few cases (5516) above signs of appreciably nor# cheeking than tha tegular, while all Indications on tha P.E. soya teat a are on tha better aide. Dirt and color ratings st two years are slaost ldsntissl for all paints at shy glean location. 2. 14559-87 P, C. Examined aftar 12 nontha' exposure at Florida, vertical south, and at Chicago, north and south. Rax 471 SUP does Vhlta using part 2182 dry RC BT -titanium caleiuu, all linstad eahicla, is tha guide point and basic formula. Tha test paints inaludei Cm) -IV USrKL Soya Eater as bodied oil earsus AW-61, which is the ss ail but nade with barium instead of sodium catalyst. (h) (48) A, 50/50/20% linseed/aoya/( SOI7) castor esrais (48) #2, in which (8017) is replaced ty (2825) hoary Dahydrol, eersua CV 49 llnaead/eoya/chinewood. The first two are repeated, a factory batch of each oil against a laboratory batch. 0007-SWP-044336 0007-SWP-000113706 Faivtl Kinutb April, 1951 -19- #97 - Coat. Florida panala war* recalled' becauaa Sr. Sieplaia had imported appreciable checking on acma taata, tat fhla peeved to ba extraawly alight and tha aaae cn guide# u on taat eectiana. All Florida taata war* aoiaal except that CV 49 and, to a laaa extant, (46) #2 laboratory Mtch Mtowad aora Mildew tbs thair guidaa. Tha Chicago taata lookad aora informative at firat glance tut it waa ootad that all caaaa of sarisaa dirt ahoved guide# which vara equally dirty. At 4 aontha, however, tha guida aid tha P.E. Soya taata ware olaanar on tha north than tha hiidad oil taata. 0007-SWP-044337 0007-SWP-000113707 jgpfcT-'i #97 - Crat. Flint SMearoh March, 1351 -22- chalking rad generally- leea dirt,, but poaaibly. aan fading of the tints* Bra evaluation of tbs fbaanla changes load to the following general oraduaianm (1) Vo fil* failure |mWr thra *aligbfc nlonoaoopic" checking* very allg)iit cracking rad rara wrinkling. FUn failure la sot slgaifierat on rage whites, but on the tint* the catalyst-bodied soya rad, to a 1ms extaat, aOe-bodUd rad aoja/chlnawood Mow checking rad vradAlsi tendraotea. (g) Appearance at least utUfictcir ra all, with the vehicle teats all geoerslly cleraer rad better Incit ing thra the golds sad the whitea ooatelnlai rutile noticeably ales is olera-ug. (S) At about one veer, the Pittsburgh oil teat was rated definitely oleraest of tbs whites rad SO)-treated soya aoaeUhet dirty, tut at tue jeers thsra is little aboioe. (4) At e jeer, Pittsburgh oil is the tints was definitely, criticised for fading, with our scys/chinawsod only slightly batter rad SQg bodied soya best. At about two jeers, there Is no choice on four out of the six sets of panels, but the fining two (Chicago, cool uecrtfa-- pointing) ahoar the toys/chinavood rad Pitts burg araplts ee eceasdrat better la color than our three sparin' 1j treated erase. 5. Itnt-di V. IraataM after two years' exposure et Ilorlde vertical south rad et Qfkmm north end south* tha praals are prised with Has tie nedarrarttr of natehiag shade. The teats lavolva Rex 471 SUP (OOM Bilte of 4*09*46 rad See 466 Colonial fellow of 4-21-48 as guldee rad beaio formlas, using (510) bodied linseed oil. In the test arapl as, this la replaced by (a) CV 49, 50/50/20jf llnnaed/ soya/ehInswood oil and (b) (5518), 80/Kj Kja/chlnawod. Previous axraijiaticn at about one jeer Indicated siigrtly better gloss re tention, but noticeably rare dirt with (606), vith CV 49 a little cleaner but not equal to (910). At present, the Elites at Florida een identical and the tints also look sloeat exactly alike, but the acya Maples shew a little rare free chalk rub-off. At Chicago, the ratlre series la general la quite satisfactory in appearance, al though the aoya teats, especially (5316), show a little rare dirt than the guides and a little rare chalk-ra.sk fading. There setbis to hawe been a slight lapToranrat in the. appearance of the (S516) **"?! relative to the others over the part year. 0007-SWP-044338 0007-SWP-000113708 097 1 Cent. Pilot Research March, 1951 -21- 3. Dutch Boy Buff teats against SUP show now (contradictions la the two series, due both to location and to time of exposure. la a clear najority of eata* Butch Boy shows lass fading, but than art definite lnatenoaa shoving tha opposite. Tba tnod of film durability' farora SUP, but ear* tala eaaaa ehov no fallow on tba Butoh BOX where it would bo logical to expect some*. SWP tint baaa rate* cooBlatantly batter la dean-up* 2. 12914-29 and 15225-30 T, C war# axanlaad after 2* nontha at Flortda, wrtloal aoutk. The paaala are prlnad with Rax 450 Undsreoater of ooatraatlag shade. Corwapoadiag Chicago tests, south and.north, vara also covered on tba: baaia of readings available at 20 noatha and 25 nentba, respectively. These aarlaa teat the aane palati, but tba first vaa painted out. In July at tauperaturaa above 05* F.t viiile tba latter vaa dene la Korwber. at 45 - 00 F. The palate are: (a) Rex 471 SUP Qloaa White. (1) Three fomlaa teat pigment change*, ell rutile titanium, all anataaa nod 50/50 rutile aaataae. (2) Five vehicle chmges In tba anatase type, RS 8474 for (48) llaaaad - Bia soya, air blow. (Old nunber, CT-7027). RB 0471 * * - SO, treated acya. ( " , CV-70J8). RB 8472 n If- - Catalyst bodied soya. ( " , CV-7028). RB 0475 t - 60/20S aoya/CUO, bodied.( Old " , CVR-584). BB 84T7 ,, * - Pittsburgh's S0-500 aoya( n " , CTR-570). (b) Rax 471 SUP Geneva Crean of 7-31-47 ia used as a guide and basic fonaula for tint taata of tha above bodied oila, no plgaant chaagaa being tried. The report necessarily goes to aona length to point out poaaihle differencaa up to tvs years vhich night be the result of tha painting oondltlooa or tha formula changes. Space does not pexalt tba asntion of ill euch differences here. The effects due to tha painting conditions are rather slight and do not seen very significant as yet with regard to dura bility. The vam weather group ahova more free and more uniform 0007-SWP-044339 0007-SWP-000113709 fust imurit Karen, 1961 -80- 2. 15461-70 CS, CS, T. Zhe paints cover refonmlstinn of SUP West chester Qngr to iapran flow, gloss and uniformity. The fomnlativs changes include variations In type and reduction of amount of ex tender. 80 dry magnesium aUloato la compered vlth 8504 diy super flat magnesium ailiaate, 518 dry lytaS 500, 515 diy Siam Mistron T-076, and 566 dry ealeliaa carbonate. Vehicle ohegea include Introduction of dom linseed alia end/or alkyl. Xxpoaarea Chicago south and north vertical and Miami south vertical. 5. 15506-10 CS, Off T. Tha paints oonpara P.E. aitara of lisatad and soya fatly adds submitted ty Resin Research with bodied linseed oil (510) and Dr. Kuan's soya aster AT 1101 In Rax 471 SUP Gloss White. Exposures Chicago south sad north vertical and Mlaal south vertical. 4. 15511-25 CS, Of, T. Tha paints vara rude at Mr. Bolton's suggestion to test viiyi ether plastlelaars in SUP, and carry 1/4, 1/2, 1, 2, 4 sad 6 gallons polyrljyl aethyl ether solution par 100 gallons SUP. The use of two gallons or note of tha other plasticiser solution dagraded brushlag and flow properties. Exposures Chicago aouth sad north vertical and Himi south- rertical. Exposers series axnalnad daring tha aonth include? 1. 11778-66 ?r C fflnad after SO months1 expoaura at florid*, ertloaA soutfey *d 54 aonth* at Chisago, south and north. Tha paints era tested both as two oosts self-primed nd over special prdamrs (Rax 480' SUP Cod(rooster except in tha eaaa of tha Dutch Boy paints, where their #010 primer wa used). Regular Rear 471 SUP doss White is oonpered to purchased saaplaa of Dutch Boy #110 White and 0'Brian's Theraollssd Tong Oil Vblta; alao Dutch Biy #184 finff is acnyarad to SUP Tint Bass shaded to natch. A study of this aeries and another snail series tasting Dutch Bey palate shows art-the present stags sons conflicting results, too involved to preosnt here in detail. A few general stataamts mty be mads: 1. 0'Brian'a TTO White is clearly Inferior to SUP and Dutch Boy in clean-up and film durability. 2- IXitcfa Bey #110 White rates free approximately the sans sa Rax 471 to definitely poorer, depending upon exposure loca tion and tine. It sbovs serious checking and incipient cracking at Florida, -whereas Rex 471 shovs none. Tha bulk of the evidence indicates that Rax 471 deans up better. 0007-SWP-044340 0007-SWP-000113710 Paint Research March, 2961 -19- #97 - Cent. The Liaaasd Oil Mill he* prepared a special (510) AT 1187 bodied oil fxm uarafrlgaratsd and unbleached (44), also a batch of regular (610) Lot 661-4 ttm the eene lot of raw oil for oar evaluation in SUP. Five gallon sanpleeof each oil warm submitted to Paint Research and tha Chicago plant ordered a iron of aaoh oil for. SUP production. Iba two saqpleeof special. (310) ware ooaqianad.ia tha laboratory for ganaml petfomhaoe is SUP Qloaa Vhita.. Tha ample of AT 1187 vu vary aiailor to- tha (510) control Lot 55L>4-. in all respecta, as indicated hr thk fallowing d*Ur Brushing Batch-OTSttP ?rinc Ml ?*l-4 Good Batch W 624 P WelM A 1167 Good Flow Good - Oood Set-te-tooafc 7 hr. 46 nia. 7 hr. 46 oia. Ovef ni^t Oood Good Gloss fielar Good Slightly rad Good Sligtdly gre Tisaealty #6 Frtah Over night 10 days 19.2* 24.6* 30* 22" 24.4" 80.2" Vo* Mi oocilMted an tha rafaaailaUoB of Sax 477 SUP Vest<*a*ar <Mjr |n obtain a hi*ar and aoca uaifoap gloat as vail as bettor tint TvtdMdcn on dhpawao. We have Mioountaiaad sene difficulty with *r MfgMM Wddn 804 P fonmlatad with put blow and part haat bodied Uuaaad Bar "Hha bodied oil portion of tha rdddi. Laboratory batchao * veil aa plant production oada with (215) blow linaead Mj o v ii rathar hot flooding and streaking. This condition vas not obaervad rdrm all of tha bodied!! la AntroMwed aa beat bodied linseed. Work la being oontinaed on this problea. Panela prepared for ipui Include-the following; 1. 1546(7-41 CSt C*, F. The paiatn oenpera Sagla-Plcbar'a #416 sine osdda with other sine oxide* auch aa 2296 dry Abo Z2Z-5S, 2069 dry Hew Zinc XX 608 and 1707 dryWev Jereqr jy 60 oxide in Rax 436 SUP Pun* Resisting White. Exposures Chicago south and north verti cal and Mlaai sooth vertical. 0007-SWP-044341 0007-SWP-000113711 Paint Research March, 19S1 -18- lS?-r..SS-A.7\ The Vegetable Products Raeearch Laboratory auhnittod a gallon of ll&aeed oil AVM-65, preload tjr the nixed advent extraction artbod, for tart la SUP. Tba solvent extracted oil wee oonpered with regular stock (2) raw llnaeed oil. ATM-88 Zodiac Ho. Heated Oil Toots Acid Ho. Color Moisture 191.5 1.2 1.0 11.0 0.16 188.6 0.8ft 2.2 u.o 0.01 Tart batchee of SBP aado with each oil vara oonpered for bruahing, flow, drying, ate. Tha advent extracted oil AVM-85 war found to ha alailar to regular (2) la bnufclag, flow, and slightly batter la drying char* acterlatlca. The ignored drying la apparently due to tha higher lodiaa value of tha oil. However, tha paiat aada with AVM-85 had a characteriatio advnet odor that ocaild not bo detected la tha regular aaapla. Tha eligbtly higher anrtmt of oil foote had no apparent affect on gloaa or drying properties. Brushing 0.T p*i ? 2s&^akf Good 0J 889 P (2) Proa Stock Good Plow Pood (-) Cood (-) flet-to-toush 6 hr. 48 aia. 7 hr. 55 all Over night dap O.K. O.K. caoee Good Good Odor Slightly more odor than 820 P. Characterletlo Tba pminta will bo exposed at Chicago and Florida. 0007-SWP-044342 0007-SWP-000113712 Paint Research February, 1951 -80- ^>97 - SWP 471 The suspension effects of a number of agents in SWP 450 Underwater and SUP Gloss White - Rex 471 vers checked after a year's storage in one gallon containers. A penetrometer was improvised by equipping the shaft of the Gardner Mobilometer with a suitable guide end bracket supporting it in a vertical position above the paint con tainer. The shaft was loaded with a 100 gram weight end allowed to fall freely from a point five Inches above the paint. The time required for the shaft to come to rest in the settled paste or on the botton indicated the amount of settling in each sample fvon extant of separation between the point of rest end the bottom. The SWP Underwater - Rex 450 samples were made in accord ance with Formula Card #51. One series contained (384) beat bodied linseed as a bodying agent and a parallel series carried no (384). The series containing (384) exhibited increased thixotropy. The points in this group consistently offered more resistance to penetra tion using the instrument than their parallele in the (524)-free series, but the settled pastes were not firmer on the usual knife tost. Batches containing l/2St water by volume settled to firm, tougi cakes showing considerable agglomeration. They could not be re-dispersei satisfactorily by stirring. The combination of 3 pounds aluminum stearate - 547 dry and 3 pounds lecithin - (5094) looked best from the standpoints of thixotropy and softness of settled cake. 5 pounds of calcium stearate - 1626 dry was a dose second from the standpoint of settled cake characteristics, end it responded beet on the basis of re-dispersibility ty simple stirring. SWF Gloss White - Rex 471 studies included the some variations of suspending agents in the presence and absence of (524). The tendency for (384) to promote thixotropy was not as evident In this fotaulation, bit the performance of the suspension aids followed the ssme pattern as that described for Rex 450. The combination of lecithin with aluminum stearate produces a greater suspension effect than either one of these agents alone. This effect is being investigated with calcium as well as aluminum stearate and is being tested in & broader range of pigment and vehicle combinations. A series of 2-1/2" x 6" wood panels has be prepared to study the effects of treatments with silicone type water-proofing com pounds upon the adhesion and general durability of conventional paint 3ystems. Preparations containing silicones GE 81145, GE 81091, GE 9980, Dew-Corning'8 XR 129 A, and a coonercial product, "Stops11" are being compared in thia test. None of the silicones show adverse effects upon the adhesion of Save-Lite Undereoater - Rax 24129 and Enameloid White - i?97 - fonfrt. Paint Research February, 1951 -21- Rex 710 coating systems. A series of Rsx 450 rad Rex 471 costing sys tems is being exposed in the Veather-Ometer. These ere showing no sig nificant differences between coatings applied over silicone water proofing compositions or on baro wood after 455 hours of exposure. A revision of Rex 471 - SUP Gloss 1/hite has been suggested in which the TiOa portion baa been altered on an opacity equivalence basis. Rex 471 Card 64 carries 15G pounds 1405 dry anatase titanium dioxide end 75 pounds 2152 dry Titanox RC HT. The revision which is proposed would cany 100 pounds 1405 dry and 160 pounds 2152 dry. On both draw-dotn and paint-out comparisons opacity is equal on the two pigmentations. A cooperative exposure series has been arranged with the St. Joseph Lead Company to evaluate the zinc oxides which they offer for exterior use. Pigments of other producers will be used as refer ence standards. The following zinc pigments will be compared. St. Joseph Lead Company Green Label Zinc Oxide #17 ti n * " " #42 New Jersey Zinc Company Horse Head Zinc Oxide XX 592 "" XX 50 " " XX 505 American Zinc Soles Company Azo Zinc Oxide ZZZ-33 "" " ZZZ-55 Comparisons will be made In both a lead-free formula, Rex 456 - SWF Fume Resisting White, and in a lead-containing formulation, Rex 471 SWF Gloss White, Work has continued on the reformulation of SWP Westchester Gray - Rex 477 to secure better uniformity of gloss, less flashing and improved tint retention on exposure. We have had fair success in obtain ing the characteristics desired ty the use of a few gallons of blown linseed oil and the replacement of magnesium silicate 20 dry with a high consistency type magnesium silicate 2304 dry. If 2304 dry is not avcil- 0007-SWP-044344 0007-SWP-000113714 r:~ IS | 497 - Cont. Paint Research February, 1961 22- able at nil plants, 515 dry Sierra Miatron Tale oould be used as on alternate. A factory batch of Vestchaster Grey will be made on the pro posed formula OJ 804 P and quart sanples of the new production will be sent to Cleveland for their Inspection. The now fornula is approximately 8-1/4/ higher in cost than the regular Rex 477. Work will continue in a search for further inprovenxit. Panels prepared for exposure during the nonth include the following: (1) 15410-21 CS, CM. To study tha Dure* liquid resins 50800 and 14994 as replacements for 6 end 10$ of tbs oil in Rex 471 SWP doss White end Rex 54 Comomrealth Barn Red. The thought van that these resins might help speed up drying to oonbat flatting due to fogs such as are encountered on the vest coast. Wo were not impressed by the rosins or their performance. (2) 15422-4 CS, CN and F. Studying use of Resin Research RC 7482 end RC 7485 which are dispersions of Daw Latex 744 (higi vinyl chloride-vinylidena chlorlds polymer) in air blow linseed as replacements for the heat bodied linseed in SWP. The paints were low in gloss and alow in dTylag. The point mads using RC 7465 showed definite incompatibility and therefore was not used In the final exposures. Reports of examinations of panels on exposure included the following: (l) Panels 7055-61 F, C, exposed 4 years at Florida and 57 months at Chicago, vertical south. The paints include Rex 471 - SWP Gloss White of 10-15-42, pre-war vehicle, with all TiOg as R-200 rutile T10B as the basic formula, six batches of varying; FTC's. The variation was accomplished by holding the pigmenta tion constant and changing the relative amounts of (2) raw lin seed oil and (48), then bodied linseed. The formulas vary frees 30$ PTC, using largely (2) and only a mall amount of (48) througi 52, 54, 56, end 40$ PVC's to 45$ FTC, which carries only (48) in the binder. Florida tests were very consistent in ^sowing uniformly good durability on all painte for 2 years, allgit failure on Idle higher FTC's at 5 years end a narked difference favoring the medium PVC's (54 and 36$) at 4 years. The record on dirt end dean-up also favored the medium PVC's. In the Chicago group 0007-SWP--044345 0007-SWP-000113715 #97 - Coat. Paint Research February, 1961 -23- there soeasd to be little or no choice according to PVC. While the series is too United to cover the whole subject of PVC levels, it is interesting that paints of each a wide range of PVC'a did actually perfom satisfactorily for about 5 years at each location. The most Important factor appears to be the selection of bodied oils and their proportions in the total binder. (2) Panels 10058-60 C. Examined after 41 months' exposure at Chi cago, vertical south. Rex 471 SVP (Hose White, bodied oil type using 60/60 rutile/onatasa titanium, was the control formula, and the tests were the same except for the substitution of CVR-189 and CVR-240 for (48), thi bodied linseed oil. These oils are Driaoy "A" and Drlsoy "B* respectively, bodied by us. The original paints were rated aa veiy closely alike except for a alight yellowness of the specials. Chicago exposures for a considerable time showed a slight preference for the Driaoy samples as to whiteness, with "A" slightly cleanest. At the end of 41 months, however, there was no choice. All were clean and good except for moderate erosion. The Florida results cannot be presented fully because the panels were lost. Routine reports up to 24 months indicated that (a) Dri ses' "6" was inclined to hold more dirt than "A" or (48), end (b) Drisoy "A" started to show microscopic film failure slightly earliest of the three. (3) Panels 10997-11004 C. Examined after 4 years' exposure at Chicago, vertical north and south, and reported with the corre sponding Florida panels (south only) which bad been retired at 5 years. Regular Rex 471 SUP 6loas White of 6-13-46 aa guide was compared with Titanium Pigaent Corporation's Ex-4506 low PVC limed oil vehicle house print, made with liquids prepared ty us, as follows: CVR 599-1 Limed linseed, low acid value, low in body. Using (44). CVR 600 Very similar, but both A. V. and body increased. CVR 602 Made from (520) and (44). Close to T.P.C. specifications. These oils used at 44 gallons with 21 gallons of (44), plus, in each case, 11 gallons of CVR 572, a linseod oil treated with MgO. All paints were tested both over Rex 450 Undercoater and as two coats self-primed. 0007-SWP-044346 0007-SWP-000113716 #97 - Cont. Paint Research February, 1951 -24- Then have been minor variations possibly due to differences In the above oil*, but the essential fact is that all of the special paints failed very badly ty erosion at Chicago, and shoved considerable to bed checking end cracking at Florida, whereas all guides ver* relatively good. The contrast be tween Bax 450-priaed and self-primed tests at Chicago was very striking, the Rex 450 remaining In good condition after the eroding away of the entire top coat, >fclle the eelfprlaed teat areas were practically down to the bare wood. Thera vara indications that CVR 599-1 van slightly acre durable than the other special oils. (4) Panels 11116-22 F, C. Examined after 5 years' exposure vertical south in Florida and south and north vertical in Chicago. A comparison of linseed and soya oils in SWP Gloss Wilts. The regular linseed StiP fomulas include those of pre-var 4-8-42 and 10-15-42 and the bodied linseed fotenia of 6-15-46. One soya oil formula uses (1275) alkali refined soya for the unbodied portion of the binder and BV-7027 bisbodied soya for the bodied oil portion. The seoond soya oil formula is based on unbodied and bodied Pittsburgh 30-500 Selected Soya, also plus doubled manganese drier and 0.02$ cobalt. The interest was primarily la dirt collection. At three years all the test paints are alike in clam-up, although earlier reports Indicated somewhat greater dirt collection on the aoya paints in Chicago, with no differences in Florida. The pre-var high oil fomulas ahov serious checking and crack ing in Florida, but the film condition of the other paints is good enough to warrant further exposure. (S) Panels 15154-45 F, IT were examined after 24 months' exposure at Florida, vertical south, with eupplasentaty examination of Chicage tests at 22 months. These consist of cedar and yellow pins bevel siding, testing the following 2- rod 5-coat systems, the Rax 471 SWP Gloss White being a regular formula using all 1405 dry aaetaae titanium and 100$ linseed vehicle: Rex 450 Underooater - Rex 471 2 cogts Rsx 471 Aluminum Primer, 50-gal. length-Rex 471 Rex 23015 A1 Primer, 13-gal. * -Rex 471 Rex 450 - 450 - 471 Rex 450 - 471 - 471 Rex 471 - 471 - 471 50-gal. A1 - 450 - 471 50-gal. A1 - 471 - 471 13-gal. A1 - 450 - 471 15-gal. A1 - 471 - 471 0007-SWP-044347 0007-SWP-000113717 #97 - Cont. Point Research February, 1961 -25- Moot of tbs panels, including tboM self-primed, art Showing very little failure at either location. In this set selfpriming la apparently equal to special priming up to two yean. Tbs only serious failure at Florida is on yellow pine, and is generally on both guide and test. The two-ooat . job using the 15-gallon aluminum primer might be called eligibly inferior at Florida, end la the only one definitely Inferior on Chicago exposure. Both 2-coat lobe using alumlmm primer are developing appreciable "ahov-througi* at Chicago. All testa continue on exposure. (6) Panel a 15185-96 F, C were examined after 84 months' exposure at Florida, vertical south, and 21 months at Chicago, north and south. Regular Rax 471 SUP Gloss Vhite using 80 F magne sium silicate is compared with CW 2679 miciunised 80 F and with Nytsl 500. Neither location showed any differences, except a very slight preference for Nytal on one of two tests. Likewise, no differences showed up between the two grades of 80 F In Rex 459 Barkely Tallow, no test of Nytal being In volved.. Supplementary tests based on factory-made pastes reduced and studied in tbs laboratory covered 80 7, Nytsl 500 and a 8201 Atomite-2205 Carfcola Talc bind in Rex 471 and Bex 475 Colonial Iallow. The Colonial Tallow group come up with the only obvious variation from noraol in the entire aeries, namely excessive dirt and fading with Nytsl 500. However, this may have been largely Aie to the fact that the sample used in this tint was specified as "off-odor" and may have been below standard in other respects also. 0007-SWP--044348 Paint Research Januaty, 1951 -15- #97 - SWP 471 Sons work was lone on the reformulation of SUP Westchester Gray. An effort wee mode to reduce the pareastags of inert end improve the uniformity and degree of gloss. The inert was reduced from 400 to 300 pounds ty the use of two hig) consistency mcgiesiua silicates, 315 dry and 2504 dry. Sadi amounts of Rhootol (R. T, Vanderbilt Co.) and blown linseed oil (798) are being used to improve the flow and gloss. Work continues. A few tests were run on LV 1 - V 6, Oakland's 5058 Reduction Paste Point, SUP, and Exterior Semi-Paste C 78 V 9 to determine the water-spotting tendencies of each formulation. LW 1 - 9" 5 was reduced 5055 with boiled linaeod oil and the Exterior Semi-Paste C78 W 9 was reduced with three quarts of raw linseed oil per gallon, ^hile SUP was applied full body. 16 panels were painted with each product <?md et one hour intervals one paint-out of each product was exposed to a fine sprty of water for a few seconds. The panels were then placed in a 9558 humidity chamber for 50 minutes. They were then removed, end allowed to dry. At the end of the test the panels were inspected for gloss, water spots or pitting of the film. When the paint films are still wet (i.e., not set-to-touch) the water droplets mar the surface but the paints finally dry with good gloss except for the pits in the surface. The films seem to be especi ally vulnerable to moisture at about the set^to-touch time. As such films continue to dry they show fine surface wrinkling and flatting. After the films have set to touch thwy are less vulnerable to moisture and dry to good gloBS. Therefore, house paints applied where there are heavy dews or fogs (as in the Boy area) are susceptible to flatting when subjected to condensation at about the time the film starts to set. Water Spot ting Tests OJ 688 P LW1-V5 502 Red. Paste OJ 691 P SWP Gloss Whits - Cart 62 OJ 692 P Ext. Semi-Paste Paint C78 V9 0 hr. Deeply pitted Deeply pitted Deeply pitted 1 hr. 2 hr. it 11 It It ft It 3 hr. 4 hr. fi * n Pitted ft It 5 hr. it n It- 0007-SWP-044349 0007-SWP-000113719 Paint Research January, 1951 -14- #97 - Cont. Water Spottine Tests 0J 688 P LW1-VS 50$ Red. Paste W 691 P SWP Gloss White - Card 62 OJ 692 P Ext. Semi-Paste Paint C73 W9 6 hr. 7 hr. Pitted n Pitted Bad surface pitting. Pitted Bed surface pitting; slightly flat. 8 hr. Bad surface pitting; slightly flat. Bad surface pitting; slightly flat. Bad* surface pitting; def. flat. 9 hr. 10 hr. Bad* surface pitting; slightly flat. Bad* surface pitting; slightly flat. Slight* surface pitting; definitely flat. Slight* surface pitting; definitely flat. Definite surface pitting; vexy slightly flat. IV 11 hr. Trace surface pitting. Slight surface pitting. O.K. 12 hr. O.K. O.K. O.K. 15 to 15 hr. O.K. OJt. O.K. *Sat-to-touch time - approx. The Resin Research Department submitted two S02 bLovn linseed oils to be evaluated for durability in SUP. RC 8105 - SOj blovn soya - Epon 1004 Body - Zs Solids - 100$ RC B104 - S02 hiown soya Body - Z3 Solids - 100$ 1 0007-SWP-044350 0007-SWP-000113720 Faint Research January, 1951 -16- <>97 - Cont. SHF Gloss Vhitea were made using 19 gallons of RC 8103 or RC 8104 in place of bodied linseed in two formulations based on 5-1/2 and 4 pounds of oil par gallon. Paints made with these oils ere some what sticky in brushing but good In flow, gloss and drying properties. Exposure tests will be made at Chicago and Florida. The Laminar Calcium Corporation hae submitted a sample of Laminar (Ground Oyster Shells) for test in exterior paints. Laminar is similar to mica in particle shape. It was compared with 2307 dry (mica D, G.) as 7* of the pigment In SHF. The paints will be exposed at Chicago north and south end Florida south only. Chemical Analysis of Laminar CaCOj MgCOs A1203 SiO, FCaOa Mn* Organic as COj Moisture 96.40* 0.50 0.10 0.20 0.05 0.023 0,40 0.20 Largely MnC09 The following groups of house paint panels were prepared for exposure: 1. 15262-79 CS, CM end F. Special SUP Gloss Whites with 40)6 of the oil as bodied safflower oils, also 100* safflower. 2. 15280-91 CS, CM and F. Supplements series 15252-79. Includes Rex 471 SWP Vhite and variation#, Rex 465 Colonial fellow and variations, and Rex 477 SUP Westchester Grey and variations. Safflower oil at 40* end 100* of oil. Since the experimental paints were somewhat short in flow, Rheotol was added to certain samples to improve flow, using about 5/8 gallon per hundred gallons of point. A factory batch of Rex 471 with 25* safflower oil was included in the series. 3. 15316-21 CS, CM, F andX. Testing Persolite 4-PVR, So expanded Perlite similar to 1-FVR, in SWP White end Colonial Yellow. Substituted for 20 dry magnesium silicate at both equal volume and equal weight. 0007-SWP-044351 0007-SWP-000113721 * Paint Research January, 1961 -16- #97 - Cont. The following series of house paint exposures were examined during the month, with results summarized* 1, Panels 11519-47 C and 11519-51 T were examined after 44 months' exposure at Chicago, north and south, and 86 months at Florida, south only. All are cedar bevel siding panels, end all those which were exposed at both Chicago and Florida (11319-11351) are 2-coats ealfpriaed. The teats were planned in 1946 to oovar the formulas which National Lead Coagwny seemed most likely to uae in their proposed readymixed white house point. The working formula was based on 20f each of zinc oxide, basic sulfate white lead, basic carbonate white lBAd, anr.tase titanium and magnesium Bilic&te. Four separata lead-zinc combinations were tried both at 30Sl and 34jf PVC. National's acicular basic sulfate with (l) National's HT5 and XX-505 sine oxide, (2) HTS end ZZZ-33, (5) National's #111 and ZZ2-33 and (4) 9 dry BSWL with HTS and ZZZ-33< in addition, a formula using 412 co-fumed leaded zinc wne made up on the sam^ basis with HTS as supplementary lead. Rex 471 SWP Gloss White of 9/45, using all 1408 anatase titanium was used as the guide, end other formulas put in for comparison puposes were* (1) same as guide but 50/-50& 1408/2175 rutilo end (b) pre-war Rex 471, all rutile titanium, "high oil" vehicle. The vehicles of all oxcept the last named were as that of the guide, all linseed 60/40 typo. The 5Of> FVC samples of the five "National Lead formulas" were repeated as Chicago tests only over Rex 450 Undercoater and over the MW-401 type zincless primer. The results were veTy informative, but too ooaplex to present here in detail. The full report is not being generally distributed, but a limited number of copies are available on request. In general, there is a clear trend at oil locations in favor of the regular Rex 471 and the other co-fumed leaded zinc samples, both for durability and appearance. It seems quite clear that the 2C of titanium in the high lead-low zinc mechanical mix foraulas does not do the Job of clean-up that is done by about 1636 in regular Rex 471. It is apparent that-National does not get, as they claimed, sufficient activity from the BCWL-BSWL blend to augment the low zinc oxide activity. There are striking differences in appear ance in the comparisons of 1403 and 2173 titanium oxides, the latter being dirtier and yellower in cart. The superior film integrity of the co-fumed formulations is apparent both under the Chicago conditions of heavy erosion and the Florida conditions promoting checking and cracking. Nona of the four lead-zinc blends stands out as either good or bad. Thera is some evidence favoring the 54^ PVC. O007-SWP-044352 0007-SWP-000113722 Paint Research Januaiy, 1951 -17- #97 - Cont. 2. Exposures 11945-8 F, C vera examined after 50 months' exposure at three locations, Chicago vertical north and south and Florida south. The testa were for the purpose of comparing Rex 471 SWP Gloss White with du Pont'a #40 Outside White, on cedar bevel siding panels. The Rex 471, regular of July, 1947, vae applied over Rex 450 SWP Undercoater, as vaa one sample of cki Pont1 a. The latter was also tested as two coats self-primed, (a) with the first coat reduced 1:4 with linseed oil, and (b) both coats full body. Tbs panalB from all locations were in almost ccoplete agremaect as to trends. The du Pont samples showed the least erosion, but no less of other film failures than the SUP. The Rex 471 looked better, however, because of less dirt and less yellow cast. The du Pont material was believed to carry R-200 rutile titanium oxide, which aigit account for both the gcod durability and the relatively poor appearance. 3. Panels 12592-410 C, ? were examined after 26 months' expo sure at Chicago and 24 months in Florida. Both Rex 450 SWP Undercoater end Rex 471 SUP Gloss White were varied, comparing 1405 dxy free chalk ing anataee TiQ* with CW 2494, the early production of Caloo's Gloucester anstase TiOj. CW 2494 in general performed satisfactorily. In special variations du Font's LW TiOj was somewhat dirtier, 2175 TiQ* also dirtier tut slightly more durable, and soya vehicle gave slightly better gloss retention aid slightly acre dirt collection. 4. Panels 15146-9 F> C were examined after 24 months at Florida, vertical south, and 20 months at Chicago, north and south, cedar bevel siding primed with Rex 450 Undercoater. The tests are as follows: OJ 59 M - Regular SWP Tint Base (Cream), co-fumed leaded zinc with supplementary 18 dry BCWL. All linseed vehicle. Shaded with BT 10, Bf 20, BO SO. OJ 60 M - Same, but 2295 diy ZZZ-55 zinc oxide, 9 dry BSVL, and 18 dry, BCWL aa a mechanically blended lead-zinc. OJ 61 M - Dutch Boy #124 (National Lead Co.) pigaentatlon, but same vehicle. Extender and 2174 TiOs similar to pre ceding, but 2295 alightly lower.and high in 18 dry as the only lead pigment. 0007-SWP-044353 #97 r Cent. Paint Research January, 1951 -18- Florida and Chicago results conflict seriously at this stage. The Florida panels shov considerable checking, cracking and mildew and the regular is considerably better than tbs mechanical-mix specials. However, there is no choice as to fading, and apparently has not bean in the past, Chicago panels, on the other hand, chow no failure, hut much sere fading and dirt on the specials, especially tbs Dutch Boy type, than on the regular. This was not true st one year, however; in fact, the Dutch Boy formula was slightly cleanest and least faded. Ve feel that part of the explanation lies in the fact that the chalk ing on this fonula went from practically none at one year to a quite hoavy but apparently tightly adherent chalk at 0 months. Since the purpose of tiro test was to seek an explanation of unusually good tintretention with a Dutch Bey sample in a previous exposure aeries, this group will be watched closely at both locations in the future. 5. Exposures 15150-2 F, C, testing hexane-extracted linseed oil from the S-V Oil Mill against regular (2) raw linseed oil in Rox 471 SHF Gloss White of early 1948, were examined after 24 months' expo sure at Florida, vertical south and 21 months at Chicago, north and south. Both sets of tests, on oedar bevel siding panels using Rex 450 Undercoater, showed the tw oils as essentially equivalent in perform ance through the period which usually shows greatest dirt-collection, loss of gloss and development off. chalk. No film failure occurred at either location. Florida tests indicated a possibility of slightly greater dirt collection on the special at about 6 to 12 months, and Chicago testa indicated slightly slower chalking, but neither trend haB bad any significant results so far. Note: Ve are attaching a planographed copy of the illustration of "SHF - Spreading Rates and Durability" which was distributed at the Trade Salsa Technical Board Meeting of November 1-2, 1950. Ve have a certain number at extra oopies, which are available on request. Approximately 1400 oopies are being distributed to the S-V branch managers, city salesmen, and Trade Soles representatives. 0007-SWP-044354 0007-SWP-000113724