Document QkB32gOoMnQzbz1GYME7N2x8E

-* ., Cross Index: r Pittsburgh Plate Glass Co, Segregated Soya oil #500 Oil Outside White House Paint GO: Mr. J. B. Bullitt, Lab. a / w; Uiff, Lab. Mr. Stuart Graves, Lab. v, . Mr, H. 9; gther, Lab, G. D. Reineoker, Lab. HEIiilTO MARSHALL LAfiOMTOfly UBM Philadelphia Laboratory September 27, 1946 MEMORAHDOM REPORT #M-77 uINDEXED99 4e2&'53 fcr&rflLv.wt: PITTSBURGH PUTS GLASS COMPACT ma t mg ri^ril! AVIa m #500 OIL S HOUSE PAINT WUf UKUlUIKm This will cower the preliminary investigation of Pitts burgh #500 Oil in house paints for working properties and initial appearanoe. The material is exposed to determine the durability in Outside Whites In Series #9243 Pittsburgh #500 Oil is a segregated soya oil. The sample in this investigation was DS-17036. The oil was made up into a 35$ pigment volume Outside White as a direct replacement for H-259 aoid refined linseed oil. This Is 75$ of the oil ih the paint, 25$ being bodied linseed oil. The only change in the product caused by the use of Pittsburgh #500 Oil was that it showed more surface tack. Since drying is not a critical property in house paints, the substitution appears to be feasible if evidence of durability can be obtained. Details: The e^perimentai paint is P-301-P-75133, for which a formula is attached, other details will be found in Notebook 3146, pages 62 to 77* In addition to a direct comparison with H-259 in a 35$ pigment volume Outside White, the high oil 301-756 #40 Outside White and the oil saving 301-756 were used as controls, me paint with Pittsburgh #500 Oil was equal in ease of brushing to the 35$ pigment volume control made with H-259 and to the oil saving 301-756. It was considered superior to the high oil 301-756, which showed too much slip under the brush. This observation is interesting as coming from an experienced painter, since it indi cates that familiarity with the higher pigment volume products has begun to oresta dissatisfaction with the application proper ties of prewar house paints. N 30701 In drying tests all the paints set to touch at 24 hours, but the paint with Pittsburgh #500 Oil retained a surface tack longer than the ooatrols. The appearance was equal to the con trols in color and gloss. Stability remains to be determined, but no unusual difficulty is- espeoted in this property. PHILADELPHIA LABORATORY WFSj MEH DUP030002799 ' *' * * M P-301-P-75133 0W8TOB WHITE VJITH PI. IS00. oa W-16 W-18 W-4 *DS~17036 VO-114 VD-1428 VD-1846 H-28? FF Titanium Oxid 35^ leaded aino oxide Asbestine Pittsburgh #500 Oil Bodied liasad oil Lead Maphthenate Manganese Napfctheaate Mineral Spirits Total - 100 gallons 414 333 112 13 5 _J1 1544 W-16 W-18 W-4 Im; FF Titanium Oxide 35$ leaded ziao oxide . Asbestine '' 5.0 10.8 19.2 35.0 Binder v DS-17036 Pittsburgh #200 Oil Vo-114 Bodied linseed oil 75 25 *Pound for pound replacement for H-259 acid refined linseed oil DUP030002800