Document wq4Xe1Mw8BnLDo7Jwkey9vvYB

,cci J* E. Kramer/P. J. Grunwald, Pigm., Will J. M. Lipton, Pigm., Wilm. W. W. Greer, Pigm., Chicago R. I. Me Laren, Pigm., Chicago R. L. Nickola, Pigm., Chicago ._ , ,, ""f*"' hJ* W. S5. Struve, SPiagm., SNeevwaa: rk E. I. d u Po n t d e Ne mo u r s & Co mp a n y ^j . Jackson, Pigm., Newark L, E. H. BuSLt/flgm. C. R. Pile n e^'-jU*' fetzPU3M6NTS DEPARTMENT/ / Jf- J4*. a JF Js U1 it. B. W. Ling, Pigm., C.K. JTrf aR. TWr eubsIter, nP.igm., C_ .R,, . ft. f Chestnut Run laboratory May 20, 1975 .rf. C. F. Roile Pigments Wilmington MONASTRAL BLUE G, BT-476-D BOWERS INK, CHICAGO - TEST RESULTS Tom Sharp reports (5/15/75) that the BT-476-D sample (Lot 55462) was not any easier tp ui sppme than conventionsJ tBl--3S3-D "rmin/'t-c He does not consider It Cowles dispersible. This substantiates ottr laboratory Cowles and 3-roll mill test results versus BT-383-D. Tom said they have tested American Cyanamid's unchlorinated, red shade, crystal stable alpha blue 55-3744 and find it Cowles dispersible. He is interested in both a red and. green snade Cowles dispersible. Tom reports the American Cyanamid product when given a high speed mix in a low solvent-high solids heat- set vehicle (represents plant Cowles mix) and a loose pass over the three roll mill in their laboratory, gives a ''perfect'' ink. We will obtain a sample of the A.C. alpha blue, M V tkk,//< L. A. Schlapfer PIGMENTS TECHNICAL SERVICE LABORATORY LAS/ras N35383 DUP050109397