Quinacridone dispersion milling process

Details Quinacridone dispersion milling process Quinacridone dispersion milling process

1990-12-20

1992-01-28

Dixon, Jr., William R.

Compositions: coating or plastic

Materials or ingredients

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

106493, 106494, 106497, C09B 6752, C09B 4800

Patent

active

050841009

ABSTRACT:
A dispersion milling process for reducing the particle size of quinacridone pigments wherein the quinacridone is milled in the presence of hydrated aluminum sulfate and, as a crystallizing solvent, a lower alkyl ester of a C.sub.2 -C.sub.10 dibasic carboxylic acid.

REFERENCES:
patent: H564 (1989-01-01), Allen, III et al.
patent: 4247695 (1981-01-01), Fitzgerald

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