Document vy25aGvnrVyBw53yMODmOgeRb

C ^ A R T E IiY RESEARCH REPORT Trade S ales ELMWOOD RESEARCH CENTER QUARTERLY RESEARCH REPORT SECOND QUARTER* 19^2 C-57 SUBJECT: CONTRIBUTORS: Lead Free House Paint Primer - TR4201P3 R. W Green, F, D, Williamson, J. E. Southwick / OBJECTIVES: To determine the critical P.V.C. and proper inerts in our experimental house paint primer, EGL-62006. This paint is 1W124 tinted to Bone White. SUMMARY: Exposures have been started. Any final conclusions can only be made after reviewing these panels, when they have been exposed. DETAILED RESULTS: EGL-62006, our experimental lead free house paint primer, was made using the following inerts: W-188, W-188-W-10, W-215, W188-W16, and W-188-W161. These paints were each made at 38%, 35% and 31% P.V.C. The purpose of this test is to determine the correct inert pigments, the proper level of inert and the best P.V.C. to give the maximum non-checking and cracking on exterior exposure. Exposures were made on red cedar siding vertical south, red cedar 8" x 18" panels 45* south at New Orleans. Only red cedar siding was exposed at Cleveland. All of these paints have better blister resistance than Y-1851. The brushing is excellent. R. V. Green, F. D Williamson, J. E. Southwick mhd GL DOU 660 I Gino 11661 A nalytical - 19 - C-323 veh. NV n2 T.D. I. P.A. F.A. Interpoly 50.0 % 1.5 i (of NV) 9.3 i (of KV) 12 i> (of NV) . ^ 65fc (of NV) RCR-5050 536.1.5it (of NV) 19.3 J6 (of NV) 47. Scuff-Resistant Paper Coating (Fleming-Potter Co.) - Nubian The vehicle solids of thiB sample consists of three detectable components: 1) Nitrocellulose 2) Tricresyl Phosphate 3) A rosin-maleic adduct ester resin (such as VM-441) Solvents present are a mixture of denatured ethanol, toluene, ethyl acetate, and methyl ethyl ketone: N.V. Nitrocellulose T.C.P. VM-441 31.9 i i31.9 (of NV) <f,$25 (of NV)*. 4-3 (of NV)** Solvents Toluene Ethyl Acetate Ethanol Methyl Ethyl Ketone ,32.6$ 34.3 $ 30.5 2.6 % * approximately ** by difference 48, White Water Soluble Wood Primer (Tamms Ind. - for Plymouth Homes) - Nubian The vehicle solids consist primarily of a vinyl acetate-acrylate copolymer (latex). Co-monomer used is n-butyl acrylate, and is present to an estimated 30 56 of the copolymer. There is present in the vater phase, an unusually large quantity of a polyoxyethylene sorbitan mono-ester (such as Atlas' "tveens"). Also present is a quantity of a sodium polyacrylic thickener. The volatiles present appeared to consist solely of vater. N.V. Veh. N.V.: Pigment: Ash: Water: 47.1 * 27,9 1> (by calc.) 26.6 $ . 26.3 f> 46.0 56 (K.F.) Pigment Ti02 ,t Ph0.PbCO3.Pb(OH)2 CaC03 Silicates 51.2 $ 29.1 t 5.8 i 9.7 t fc9. #300 Dac-Proofer, #301 Spra-Fill + #437 Colot Topcoat (Cooper Ind, y Inc*) #300 Bac-Proofer The vehicle solids of this sample consists of polymethyl acrylate polymer. only. The volatiles present are xylene, diacetone alcohol, and ethyl acetate. Pigmentation consists solely of phthalocyamine blue. GL 0011662