C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
C09B 5/62 (2006.01) C08J 3/20 (2006.01) C08K 5/3437 (2006.01) C08K 5/3465 (2006.01) C08K 5/357 (2006.01) C09B 5/48 (2006.01) C09B 19/00 (2006.01) C09B 47/04 (2006.01) C09B 48/00 (2006.01) C09B 57/00 (2006.01) C09B 67/04 (2006.01) C09B 67/10 (2006.01) C09B 67/14 (2006.01) C09D 17/00 (2006.01)
Patent
CA 2287812
This invention relates to a process for conditioning organic pigments by (a) grinding a crude organic pigment at a temperature of about 0°C to about 100°C in the presence of (i) about 1 to about 10 parts by weight, relative to the organic pigment, of an inorganic salt and (ii) ~about 1 to about 5 parts by weight, relative to the organic pigment, of a liquid in which the organic pigment and salt are substantially insoluble, to form a pigment paste; (b) grinding the pigment paste at a temperature of about 0°C to about 100°C in the presence of about 0.05 to about 1 parts by weight, relative to the organic pigment, of a C8-C10 alkanoic acid to form a treated pigment paste; (c) stirring the treated pigment paste with water or water containing an acid and/or an organic liquid to complete the conditioning of the organic pigment; and (d) isolating the conditioned organic pigment.
Flatt Thomas R.
Mott Robert C.
Sattar Abdul
Shannon Charles E.
Corporation Bayer
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Sun Chemical Corporation
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