Document n1Bb6ppZB5qb70Kadyk76zYm

F. H0 BEADLES DIRECTOR OF PRODUCTION wuMmcmai .FftF Co Mo THEOBALD HECTOR RESEARCH DIVISION WILMXWTON F Ko F,, BRQWfXM (3) CONSUMER PRODUCTS SALES MARKETING & PRODUCTS MOR. MXLMXNOTON F So 6. P, W, To I, Nestor, Wllm.. Vaala, ri Poindexter w F9?&F W Lo So Baker, * .R, Bo Davit, " Jo A, Klacamarm* " J. 0, Graves, " Jo Po MeAndrews, 3? M if @o Ip Muiholland, Flint Po Jo Graham* Exp. Station Go Ho Bullitt* Jro* Lab. File t 3320 .Marshall Laboratory March '29/1965 MARSHALL DEVELOPMENT LABORATORY RELEASE LETTER 10 ,, 2Q4g TRIAL NARKKPXNO' OF 310-204 SULFIDE FUME RESISTANT "LUCITEH HOUSE PAINT WKTE ' Related Release Letters i 1.925, 1926 COST CODE - 3350 CLASS C" PROPOSAL AND EXTENT OF RELEASE? (1) This letter proposes the trial marketing of 310-204 * a mercury-fra-** fume-resistant replacement for 310-183 #50 Mbits* in the Gulf Coast areas served by the Houston* lew Orleans and Jacksonville P .D ,,W,9 a. The exact extent and duration of this trial marketing is to be determined by Consumer Products management who have requested this proposal at this time because of competitive activity in this area with fume-resistant products0 Requirements of 310-204 for the rest of 1965 is estimated at 32 thousand gallons ,, (&) In addition to the above* the laboratory makes the following additional proposal i that the "BM Program, with *Lucifcei*'2 house paint used self-primed* be extended to include 310-204 in the proposed area. This will discontinue the use of #49 Blister Resistant Primer which is subject to sulfide staining to an extent that It can affect the topcoat appearance ,, MANAGEMENT DECISION REQUESTED? Management Is asked to decide If 310-204 should be re leased for sale at this time and if proposal (1) or both (t) and (2) should b selectedo The following should be consideredi lo The problem of sulfide staining is only partially solved if me of #49 Primer Is continued, This will, result if proposal (1) only is approved. ^-Registered Du Pont Trademark -a- R.,,Lo' #2042 2. Approval off proposal (l) and (2) Mill assure a completely sulfide stain resistant system. 3* An appreciable change in film properties and durability behavior will result from this formulation change. However, the overall balance of properties is expected to provide a desirable improvement. Our laboratory durability background is broad and supports this feelingo 4. Busan 11 M~l, barium metaborate la required* This is a new raw material subject to Bucknan Laboratories licensing agree. went .. It is available only from this on supplier and we have not thoroughly established its uniformity,, 5* Manufacturing reproducibility of 310"2O4 has not been established but we do not anticipate any serious problems* 6*. An increase in will cost of approximately $Q12 per gallon is involved. TECHHICAL QPlfflQHs r We believe that the sale of 310-204 in the proposed Chilf Coast area is technically sound. However, the full advantages of this fume-resistant-product will not be obtained either technically or commercially unless the complete paint system is fume-resistant and we urge approval of both proposals (1) and (2) . Hot only will this product alleviate a condition which has retarded sales of "Luelte" house paint in this area but'-it will provide the first opportunity to observe the performance in the field of a paint which uses Busan 11 M~l* barium metaborate, a preservative pigment whose ultimate usefulness has not been com pletely' evaluated in laboratory studies* Its use is also expected to improve resistance to mildew and nail head rusting* Success in this limited sale will provide the confidence in this composition which will allow increased formulating latitude in future develop ments O As in previous changes in "Lucite'* house paint composition the primary area of concern is performance of 310-204 over old paint with heavy-chalk and/or dirt. If used as directedj that is, to wash off heavy dirt and chalk, there should be no problems * If the surface is not washed, we do not know if' the paint will sticks so far, in two years on houses in Philadelphia there have been no problems,, We believe the technical and commercial advantages to be gained from this release outweigh the consequences of any possible failures of this type and we favor approval,, DUP030022599 3' DESCRIPTION OF PRODgUCCTTs; Because of the us of mercury (phenyl mercury oleate) as preservative and mold inhibitors 310-183 #50 White discolors la the presence of hydrogen sulfide fumes. These functions of mercury are assumed by barium metaborate in 310-204 .thus providing a fume resistant composition <> Barium metaborate is a pigment which has properties similar to those of sine oxide in oil paints. With its use* at a 1 lb. per gallon concentration, there are a number of other changes in properties that may be evident to users who are familiar with the current #50 White. (1) To make room for the.barium metaborate, all of the mica has been replaced* This results in a lower initial gloss and, after the paint starts to chalk, a lack of the lustre sparkle that is typical of '%uctt@i white. (2) Barium raetaborate la a rust inhibitive pigment. This is evident in two ways? there is a marked reduction in can corrosion through two year of storage, and when painting over iron such as bare nailheads, there is a reduced tendency to show rust discolora tion. This property plus its white color make it attractive in corrosion resistant primers especially of the emulsion type. (3) Barium metaborate retards chalking of "Lucite* house painti thus, in dirty areas there is a longer period of dirt collection prior to clean-up via chalking; however, mildew resis tance is improved during this period. (4) Paint films containing barium metaborate are alkaline when wet and may cause solvation of discoloring materials from pre vious coats of painto This happened on a bouse test in Texas where tetrachlorophenol (normally insoluble in water) was leeched from an experimental primer and resulted in a yellow discoloration in 310-204,, We do not presently use tetrachlorphenol as an Inhibitor and this is not expected to lead to significant field problems. Other film properties, application and viscosity be havior are unchanged Stabilityi Shelf stability of 310-204 (310-W-75261 made for field"TesWTn 1963) has been excellent for two years. Durability; Acrylic emulsion paints containing barium metaborate Wave''bieen on exposure for over 4 years and 310-204 (as 310-W-75261) for two years. Except for the change in chalking characteristics, there have been no adverse durability performances and the fume-resistance property has been dramatically demonstrated on the house in Kewgulf, Texas. DUP030022600 1, R.L. COMPgTITXyB SITOMlOls Competitive product of a fume-resistant nature have not been evaluated, TMMJZnPiTXGM OF QOMPOSITIQffgt Warn following table compare 310-20% with 310-133 afl list tli ingredients on a basis of pounds per 100 gallons* 10-183 310-20% Chang W-4 Magnesium Silicate W-88 ffiea W-178 Barium ffetaborat W-16 wTi-Ftsre*" FF W-50 "Ti-Pure" R-610 0-756 Rhoplex AC-34 H-45% 10 Phenyl Mercury OXeate 0-718, Potassium Tripolyphosphate a-7%7 Anti-foam 0-732 Acrysol A-3 Thickener 0-1111 Methyl Cellulose# Thickener S-609 Triton X-100, Surfactant H-727 Tamol 85, Surfactant 1-284 Ammonia 1-514 Ethylene Glycol 1-506 Water Total 0al wt. P?C Solids# Volo Solids# Wt, Explanation of Changes: 69 o 6 69 o6 39 o 9 187 o5 555 <.0 20 06 1.1 3oQ 3*2 log 0o4 .3*0 17 o3 153*2 1125o 1 11.25 30 4 56 69*0 98*9 40 o 185*9 551*0 -- 1*1 3*8 3*2 2.0 - 3o0 1*5 16.0 4 ' 170.2 1146p O 11.46. 30 40 57 m m CD m m m m m , , (6) m C7) Cl) Mercury Is removed to make the product resistant to sulfide fuses (2) Functions of PMO, mn preservation and mildew inhibition, taken over by non-staining barium inelaborate pigment which displaces W-88 mica in the plgmentatlono -Registered Du Font Trademark DUP030022601 Bobo #$042 (3) With removal of mineral spirit a with the taercury* more antifoa and more thickener are required * (4) Triton X-100 is replaced toy Tanol 850 as a necessary stabiliser when barium metahorate Is used. (5) ' Less ammonia is required because barium metaborafce is alkaline and buffers the paint in the 9<>5-10 pi range. (6) Added water is used to stake up for volume losses resulting fro above changes. if) Higher density is rbault of using higher density barium meteborate in place of W-88 mica. HKPRODOCIBILITY t production of 31-24 is limited to two semi-works batches sued two years ago on the code 310-W-7526X Both batches were made on formula but the first batch exhibited an undesirable amount of undispersed pigment grit. A change In the order of addition and adjustment, of liquid content in the grind of the second batch re sulted in a completely satisfactory batch. Uniformity of Busan 1IM-1 has not been establishedP CCHTIHqilfO LABORATORY WORK; (1) Modernisation of the pill base to Increase pigment loading and reduce. mill cost should be effected during alignment (2) Test houses will continue to be inspected for any unusual properties i . (3) Exposure studies of reduced concentrations of barium elaborate.for further economies are already in progress. COST XQRMATIOMs Mill cost of 310-204 in one39* *I*s* *estimated at 12#/gal. more than 310-183 #50 Wilt. Part of this difference is due to the processing of a larger amount of mill base and part contributed by. cost of barium elaborate. Alignment adjustments and 'purchase of barium metaborate in larger amounts could reduce this difference as much as 5^/gal. Actual costs should be obtained from the Cost Department. mwwACTwmm .p r o b l e ms .? 310-204 is manufactured In existing equipment and by usual techniques; no difficulties are anticipated in its manufacture. DUP030022602 M Barium sietaborate, W-178, is available fro only one * supplier, Buokman Laboratories, Xne in Memphis, as Busan 11 n-l. Although this pigment baa beets under investigation for a number of years, this will be the first extensive use of this material, In addition to Its utility as a alldew ipfeiblbive pigment, it has corrosion resistant properties and is being actively investigated %n this area, foxxernr on @mm ims s 310-804 is somewhat less toxic than 316-183 both in Its manufacture and in its use with the effect due t the use of barium wetaborete and elimination of mercury,, W-178 has an s-1 Classification, an Irritating dust; whereas 1-45%, phenyl mercury oleate, has - an S-3 Classification, The low toxicity of the finished product 1 evidenced by an HDA clearance for us of coatings products with Busan 11 M-l in food processing areas, LABEL INFORMATIONS A new label analysis will be required. Hew label direction nay also be required depending'on the finishing syste selected for sale* SIMPLIFICATION1 This release will have an adverse .affect on simplification in that om mw dispersion and .one new finished product will be died as well as a new raw material W-*l?8, barlua aetaborate, PATENT INFORMATION ? No patent complications are currently known to be involved in the Mssufiature and sale of the proposed acrylic latex paint formulated with AC-3% acrylic latex purchased :fro Rohm and Haas, Xnaamueh as the latex and the paint formulated therefrom are appar ently covered by 0, S, Patent 2,79$,*M>4, Issued t ft!? and Maas and licensed to w Pont, the label should be patent marked with this patent number. However, since the latex is purchased from' the patent owner, the paint product is not subject to royalty payment, In the event that an alternate composition is shown on the formula eard specifying a Du Font produced latex processed according to the teachings of the licensed patent, the resulting alternate paint Use of barium wetaborate ($-178H in certain paint vehicles ia covered by 0O S, Patent-2,818,34%, issued to Buoktaan Laboratories, Inc,, and licensed t Du Pont a a graduated schedule of royalty payments. The patent does not apply to the use of bariu metaborate in an acrylic copolymer vehicle such as specified in the proposed composition and, therefore, the proposed acrylic latex paint composi tion is not subject to royalty payment under tf0S, Patent 2,818,3%%, DUP030022603 R.L. 2Qk2 c o h f ip b s t ia l iwommmt There are m wmmmlty confidential disclosures In this release letter ,, FORMULA CARPSI Formal** for 310-EC& a&d its base are aitaetsed to copies of tills letter for Research and Production personnel* MARSIAtt DEVELOPWEUT LABORATORY Jc Bo onm APPROVED: DATE DUP030022604