Document qaD6DdYj96Rbv39bYoXXrVoQq

BlscJte Pigments Exposure Series #92.69 INDEXED" #e25'5S muoRmnuM e x p o r t #m~79 >lr*. Bfcu&rb LK ,;itx K* , l 0 >3 li V'" 3 $Vi H, B,, Danis, Flint Hr* F,, C* iUitap^rt, lab, Mr* 3* L, Gk><3 sheik, Lais, P&Unhelp&ift laboratory October 11, 1946 TO MMSHiLL LiSm LIBSm F10Omm Am mmmiu::w omumw&ui&l^*" ---M-Fo k ammm la Srposure Series 9169, 14 colors?, representing figment oomblimtloas'possible aai.01 oxy present 3imt Oil "tSJWXf Voxaulst- ing Practices, were chosen and xeade up, first, by using Carbon Black (W-201) * : tlio- oolers were jaatobod by using Bone'Black (W-284), Leap Black {l*205), and K<wsa #if< C coarse grad# eorboa Black}, Six of tfc colors were a 3 -w -matclod by using Black: Iron Oxide (W*>215) nd Cabot #99 j.. mmWmy Marae grade Oafbon" Black, Tlila group of figments represents Black wbl-ofe- are used at present (W~2-01, W-2S4., W-202} ,.. sad .three fEaten $V$ Cabot #99, ' W~215) wliiok are not used and -tow not'-been efflast#I for flooding .and durability etofnotorieties, fiila memorandum idll' report the results of the flooding tests,.. For %h. fXooling study, various'- nit&edfc-' of application wore used:. Dip, Brush, Flow and Spray, ;'.4 etatlstieni 'method was used to evaluate fix flooding of. mok of/tlie Blacks unde? nil these- ooad.itIons, fixe following.scale- wm iioed.; 1,) Flooding; but not visible with tfe unaided eye,.. 2,} 3,) Tieible flooding* 4, } mA thin film'of a uodsr rfce degree, " thick 5l Easily risible'floodings Serious, i&sy definite 6.) color differences* fable.Bfeo. in full detail t&s st&Xua&i of all tlm pignuts usher all the methods 'of Xiootion'i.' . . Interpreting these' reeoita- statistically, and aseignini (Jerboa Black (w-goi) a relatIre' flooding degree of 1*00, fable 1' Is'oayasBS?l3seh so follows; N 30703 W-225 v/-?.oi Cabot #99 w-2S4 Eata #15 W-.205 : Sc \x: ~ . 1.50 2,00 0.9/* o,76 Q.,?6 0.70 eo ' " } ,, ,, i C;a u ;^,,;. / c?;t ; oav :.ao: 0.97 oaa 0.68 0.35 - Lamp Black {w-205) bows the best flooding ofc&raoter** iatles. Eat a #15 floods slightly mors thou Lamp Blaek and about the same as Boa Black {w2S4), Blaok Iron Oxide (W-215) floods badly and wculd be of little us m a blaok pigment la *20a3X. 7 If, as le expected, results from the exposure test proto that Rat an. #15 does not fade ao badly as Boa Blaok (w-264) mi has better gloss retention than Lamp Blaok (W-205), than it will be reoommoadee theft it Im adopted as a substitute for Boa Blaok (w-284)* and possibly Lamp Flaok (W-205). HWOsMIH 7/:iAJ>,r&rcULJl H: W, QOBSJIAIK DUP030002806