Document 6RaGx8BRz17ZyZvzYRL2B57og

Pigments Department /%(t iS CC: C, F. Rolls, Pigm., Wilmington W. S. Struve, Pigm.,Newark B, H. Perkins,Pigra.,Newark Newark, New Jersey . March 4, 1975 PIGMENTS CHESTNUT RUN EXPERIMENTAL BETA PHASE PIGMENTS EVALUATION IN PLASTICS Under separate cover, I am forwarding 1 quart of SW* 75~0( (approximately 45# solids). This high solids level should be of interest.. This material has been manufactured by a new milling process. Will you please include it in your contemplated study of 0-phase pigment presscake applications, along with BT-487-P which we how offer to the trade (available from Newport). -- The latter product in dryvform (BT-476-D) (lot 55468) Is an excellent pigment in soft vinyl .dispersions wherein It is stronger and more readily dispersed than BT-383-D. In this respect it resembles Ciba Geigy LGLD. We are also currently evaluating ' ySW75~0Q675 in dry form; If of interest.I will send you appropriate ,r / samples of this lot also. fJlT . Oi/i- Will you please schedule evaluation of the dry toners for applications involving dispersibility, heat stability, and warping ^ < for information on possible utility of these new pigments. JJ/cjg i } N35384 DU P050109398 DUP050109399