Transparent, high strength organic pigments and process for maki

Details Transparent, high strength organic pigments and process for maki Transparent, high strength organic pigments and process for maki

1989-07-07

1990-05-22

Clingman, A. Lionel

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106496, C08K 500

Patent

active

049274660

ABSTRACT:
High strength, highly transparent azo pigments have mean ultimate particle size of from 0.010 micron to 0.040 micron. These pigments are produced by a process in which the azo compound is reacted with a coupler in the presence of one or more of a specific group of surface active agents.

REFERENCES:
patent: 3120508 (1964-02-01), Braun et al.
patent: 3775148 (1973-11-01), Bradley
patent: 4461647 (1984-07-01), Schofield et al.

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