Document gb3BRrXzQ755Enm7ke6YQO843

BETURI TO in d ex ed tri'53: Indexed . cc: Exp.Sta., .til*? ' Patent Section, La,!); Marshall Laboratory Library (5). j. D. McBurney, Wilm. B~7012 R, Morgan5 Lab. D. L. Herndon,, Lab. . wn&z- isio '. ?v Marshall Laboratory April 28,1953 ' MSMORARBIM REPORT IQ. M-579 PREPARED BY: J. E. OYLER ' TOIM AHP SHUTTER WHITE' Marshall Laboratory Release Letter #1321-A proposes the trial marketing of 87-894 Trim and Shutter White. The compos ition of 87-89S is primarily -"Ti-Purea R-61Q at 21$ pigment volume in RC-I41, 63$ linsbed oil. tnodifled glycerol phthalate, with .5$. Phenyl Mercury ; Oleate .addbd'; to control mildew* There is no durability background ojiv"t^ei"kboye composition but-there is available data', on. closely -related compositions. The purpose of thiS'.memorandual is to summarise the. data on these closely, related products. Cleanliness:' -v->- ' The deposition .closest to the- proposed 87-1394 -Which has been on exposure is one having only .1$ Phenyl Mercury Oleate but Ms the same -in all other-respects . IMS product (P-B7-U4027) has been on exposure, in Peries iJos, 12371 end 12416 for thirteen and nine-.months respectively. On. Delaware north vert ical j south vertical and 45 south and Florida.45S exposures this product has averaged 1.5 0.4 units (0 to 10 scale)`-dirt ier than #40 Outside Wfeite l-Sor-BSS). On.Florida..north, vertical exposure it has been equal (-0.1 unit) to 301-885, A similar composition' containing .',2$ Phenyl'Mercury.Oleate has. been onlimited exposure (Delaware MY and.-5Y) in. Series #12510 .for .12 months and likewise'has been.dirtier than #40 Outside White. The'principal cause of the .discoloration on all these panels been "due;Mo. -mildew and -In .ahMfYortMb assure .maximum mil dew' inhibition -i-n`,87-8.^4'.a coneentration of .5$ Ehaftyl Mercury Oleate; has been arbitrarily selected. tn areas, where discoloration.' is .primarily caused fey dirt 87-894 is not. expected to remain] as '.clean as #40 Outside-White. Earlier products which' have Been tested''as. Trim & Shutter Whites N35471 have been pigmented with either uTi-Fure" R-5i0> R-110 02? R-20G - all- faster chalking pigments than "Ti-Fure" R-610'which is. used in 87-894 to obtain maximum gloss retention and minimum chalk rimning* A detailed suma?y of the exposure perfd.rmahde of these ..-.earlier compositions is located in Marshall Laboratory Research Report #1069 dated 2/5/51. Additional data from.those series not yet completed at that- time do not change the conclusions drawn then ar4d are not included in this report. \V ' 'Durability on Yellow.Pine: Trim and Shutter White Is expected to hare completely satis factory resistance to cracking and flaking. The various analogs of 87-oS^ have been exposed on yellow pine in Texas numerous times and have shown somewhat superior durability under these conditions -.compared to #40 Outside 'White, ' ' *,A - Moisture Blistering: Again the exact composition of 87-894 has not been tested for moisture blistering but there have been many tests-.- of very similar, compositions on new. wood which show the- superiority of the Trim; and Shutter paint over the 'orthodox- system under these, conditions,. The primary difference between 'the.compositions ..tested and iST-SS1?- is that 'wTi-Pupe'? R-110 was used;. instead of 'ttTl~FureH R-610, There" had-been ho indication of any difference -in- performance (blist'ering) "b'.etweeh grades:df-.T.iOg, : .The. tests. have been made with-and without: mildew inhibitors but'hone have had ..as high a concentration as the'proposed'87-894-. A tabulation of the results of 'these- tests. Ih-.the ''Ti-Fure" `R-110 in EG~l4l formula' is. shown in the Attached Table- XT. Results frdrn ' earlier tests of other pigments and other vehicles, is.recorded in Research' Report #1069. ; There is very limited information, from controlled:tests of blistering over old -paint. The composition 'closest. to-' 87-894 is "TT-Pure" R-110 at 210 FV in 80-141- Tested. three;-differ.ent studies, its performance has been about equal td #40 Out side White over old paint. (See Table III.)' This product (R-110? R0~l4l) was fees ted" "over bid paint , on the trim ,bf 13 houses in 1948 and 1949. 'With #40 G,W. control unsuitably located on the body of 9 houses and on different windows on the other four houses it has been impossible to form any definite conclusions-as to the comparative performance of the two paints, Eight of these houses have failed .by moisture blist ering and" peeling. Trim and Shutter White has -performed'equal to or better than #40 O.W-. on six-houses and worse on two houses. A tabulation of these house tests is found in Table If, An alfcyd body paint (603-901* Colonial red? iron oxide at 140 Ff in RC-193/, '630 'Soya Oil modified alkyd) has been sold in the few England Area, since 1949 and has given satisfactory DUP030003502 performance is regards blistering. Eleven houses painted with Colonial Bed were examined In July 1952 and their conditions repxtsd In Memorandum Report #5-493. Moisture blistering'bf ' Colonial Red was found on four of the eleven houses. Oh only one house, which had a history of ba.d noisture' failure> 6O3-9.01 was peeling badly on one side which was hot properly scraped and wire-brushed before painting. On another,side which had been properly prepared. Colonial Red Was showing good adhesion. On one house the Colonial Red had not blistered while Rouse Faint Solar Yellow on an adjacent area was showing some blist ering, On another house a few blisters developed a few days after painting and were described as being of the solvent type rather than moisture 'blistering. The.ages of these houses Ranged $*orn 1 to 2 1/2 years. Conclusions from this inspection are. that the incidence.and degree of blistering of Colonial Red was ho worse than would have been expected' with an orthodox house paint, The Figments Department has tested for blister resist- . s.hce a product pigmented with "Ti-Pure" W- ind magnesium silicate at 30^ FV in Aroplas 1271, a 77^ Linseed Oil modified alkycl. This,product likewise has shown, significantly better blister resistance, than orthodox house paint controls over, new wood. There was no blistering on eight panels of this'. , product "during sight weeks of. exposure to blistering cond itions' whereas linseed :!! house paints quite badly {24 pahel's:4aVeraged'-`hi4^1;,0- blistser- units using^a.i;?) to 10- scale). . When this product'was used'over other house;, paint systems- {bat not old weathered paint) its behavior was. determined by the undercoat paint system and its average performancd is .equal '(-O.ltO.7) to the average performance of the,unpainieid under^ coat system. Details of these tests are located in. the book let published by Pigments Department titled "1952 louse'Paint Exposure Tests", MARSHALL .LABORATORY JEOssslf 4/27/53 DUP030003503  >* 4, TABLE I ' . ; ' CLEAKL1HBSS. OF P-87-U-4027.'TftIM AKt> SBUTTER .IJHITE ("Ti-Pure" R-610, 21% F7, RC-X4lj .1$ -454) EXPOSURE Del. m , SERIES. 12416 12371 $0. z 'ME!' :.T V X3icy. km... CLEAMLIHESS 9.0 8.0 ... :`.v 8.3 6.4 Del,45*S 12416 12371 9po 8.8 v 13mo 7.9 6.8 . 6.6 Del. SV 12416 . 12371 : 9mOr 9.0 8.8.i 3b o . '8.1- ; 7.4 DIFFERENCE -1.0? -1.9) . -2.0) ----- -0.9) -1J) Pla.45'S 12371 12tfio. 9-2 1.7 -1.5) 1 Fla. W 12416 ' 12371 lCmo. 8.7 llmo. 7.6 8.4 7.7 -0.3 +0,1 DUP030003504 5. TABLE II JlQilSTUHE BLISTERING 0? TRIM AND SHUTTER WHITE ON NEW WOOD ("Ti-Pure" R-110j 21* n, RC-141) 0s}.} * m 4 V- DAYS TO BLISTERING 2 MOS . p w OTST" '.r2M0S. DELAWARE "WTW^ PANELS T&S #40 O.M. PANELS T&S #40 O.W* ^38 1 31+ 14 1 31 11 1 22 11 1 36+ 20 1 36 20 1 36+ 20 ioB2i 1 36*- 20 .1- 1 36 20 1 28 23 1 25 23 H336 1 37+ 21 l 1 37+ 11 X 32 25 1 28 2$ 12423 1 42+ 18' - 1 18 11 12635* ' i' ' 12636 1 1 .. 1 1 1 1 14 1 1 52+ 52+ 52+ 52+ 52+ 52+ 13 ..17 25 13 17 13 28+ 7 10 7 10 5 - 12637* 10 4 1 1 1 1 2 28+ 28+ 28+ 28+ 28^24 14 7 5 14 17 28+ 7 7 12639 j 1 X 1 52+ 10 52+ 13 52+ 17 side fey side on the same panel. tested These studies made on Blister test RM~XQ4 Marshall Laboratory. Other studies made on Blister test House at Bel. Exposure Station DUP030003505 6. TASKS III MOISTURE BLISTERING OF TRIM AMD SHUTTER WHITE OVER OLD PAINT ( "TI-Pure" R-llO, 21% FV j RC-141) DAYS TO BLISTERING 2 MOS .T^'Jvr SERIES NO. T T FT 9936 31 25 28 25 31 25 36* 36 36* fWo.W, 36 36 36* 11536 25 32 25 28 42 42"* 34 42* 12361 8 8 Notes Trim and Shutter White and #40 O.W. were tested side by side on the same panel. All tests were made on Moisture Test House at Delaware Exposure Station. DUP030003506 0 s & & si 8n * o A *8 il S3 << # -Ills 11 tIl sH s VO VO I 200*. s3 A $$V * *^ a s-i intl .H H H H H H oo S! I 1 Iff! $ I I vf H 4*> 4*> f&8 * 3$ H Hi ,H H' H vH''t- DUP030003507 SHMT10M GOWMOh DUP030003508