C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
C09B 67/08 (2006.01) C08K 9/02 (2006.01) C08K 9/04 (2006.01) C09D 11/02 (2006.01)
Patent
CA 2138606
Pigment compositions comprising an organic pigment, the particle surface of which is provided with a protective coating, which coating consists of a metal phosphate complex in which the metal is selected from the group consisting of zirconium, titanium and mixtures thereof, and the amount of said coating is 0.5 to 100 % by weight, preferably from 0.5 to 40 % by weight, most preferably from 5 to 40 % by weight, based on the pigment. They are distinguished by excellent properties, in particular by the high gloss of the colorations obtained with them, by superior dispersion stability, heat resistance and by very good rheology of the mill bases or printing inks prepared with them. Plastics pigmented with the novel compositions are also distinguished by superior heat resistance and plastic parts are substantially warp-free.
Bugnon Philippe
Chassot Laurent
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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