Document RJQnyQY4q5gypGQR7gNYKvoKX

Fe25'53' GC: M, b , cupary, Bxperioantal station ' J. W. Hitt, Phila. Lab, P. Robinson, * st L, P* Bubbuoh, K 55 B. E Sorenson, " Philadelphia Laboratory July 20 8 1950 mi io MisfljtL tAsmim usum Mmommu r e p o r t b o . m-316 ^ %-h%ffig cm Bwm. MMAOKYLm BMTO3 IB Experiment suggested by M, B. Cupery (See letter, 6/1/50), EutyX methacrylate blends have not previously been Investigated as vehicles in bouse paints. Conclusions: (!) Thera is no outstanding advantage in using this polymer as e. vehilce; there is no further interest unless there is a definite adventage in durability, (2) Information on durability will be established0 Series #11460, Patent*, Blend of well hnown materials probably are not patentable, Share is no patent activity planned unless durability studies indi es te that the paints have commercial Importance, Details; The butyl methacrylate blends were tested in the formula of 301-885 #40 Outside White in place of the linseed oils. See Table attached for data. The paint containing butyl methacrylate blend polymerised Xu place has initial properties similar to the control paint. The solids volumej brushing, lapping, flashing and drying results corres ponds closely to the control, The gloss 3s not as high, and the color io somewhat more white. The paint containing the blend of butyl methacrylate poly mer end oil give results which are, on the 'whole, very mush below J 2 thpao of the control paint.. . The solids volumes are very low.' The viscosity of teesq paints is too low, end the brushing, lapping and flashing are all poor, `She gloss is much lower than tbs control, The drying times are faster than the control, .For these paints the maxima drying time for firmness is seventeen (1?) hours hut the actual time for tea firmness falls between eight and seventeen hours, The color of the paint containing the 20fo bland is higher , while that containing tea 14# blend is lower, in whiteness* The gloss measurements ware made with tee phcftovolt gloss-meter set at an 85 angle and using a black standard set at 48. The color was measured as the color difference versus magnesium oxide. The drying times were obtained by applying the paints to clear glass panels with a 0033 dootor blade, and maintained at 77F. and 50# relative humidity in the constant temperature room, notebook Reference; 3705 pages 1-14, 20, gl, 25 PHILADELPHIA LABORATORY AS: ms ATTACH: ALEXANDER SHAND DUP030003204 ..rM *t *t s SJ I SHaP &3 ># S 9 f< T!4V SO >.4 H to *5 rhifCS5JH0aeS r oct <h H i Aa a 3 PtHo- SvftOO 3 0 tais. 4? 3 cn.0 fot4 *-4 +wH1.*\ w\ H\ * 4 01 r\ /*4JI[S>*+d< J0i S tH H IN S' u0 *p 1 * gs ^H4SB-H 0iWCH1l < /. : l*"t o On C-ssf.' < i oX qt O r\ l Pi Mr o Os -4 Nt PS H O 0"\ t Pi VN O 0s SS p td T r-J o <*\ i 0< I0-ON4 * H r1s Pi I l .f DUP030003205