Transformation of crude halogenated copper phthalocyanine pigmen

Details Transformation of crude halogenated copper phthalocyanine pigmen Transformation of crude halogenated copper phthalocyanine pigmen

1998-10-13

1999-08-31

Green, Anthony

Compositions: coating or plastic

Materials or ingredients

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

106410, 106412, 106413, 540140, 540141, C09B 4708, C09B 4704

Patent

active

059448873

ABSTRACT:
A process for transforming crude halogenated copper phthalocyanine pigments having a chlorine content of from 4 to 50.3% by weight into a useful pigmentary state comprises treating the crude pigment at elevated temperature with a liquid acidic aromatic organic medium in the presence of a copper phthalocyanine derivative selected from the group consisting of the copper phthalocyanine-sulfonic and -carboxylic acids and their alkali metal, ammonium and alkylammonium salts, the amino-substituted and aminomethylated copper phthalocyanines and their reaction products with alkylating agents, sulfonic acids, sulfonyl chlorides and carbonyl chlorides, the imidomethylene- and amidomethylene-substituted copper phthalocyanines, the alkyl-, aryl- and cyano-substituted copper phthalocyanines and the hydroxyl- and alkoxy-substituted copper phthalocyanines, if desired in the presence of water.

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Derwent Publications Ltd., London, GB; XP002089066 "Poly-(halo-copper phthalocyanine) pigment preparation" (Abstract) of Japanese Patent Specification No. 63-36556 (Dec. 1994).
Longman Group UK Limited, Essex, England; Heterocyclic Chemistry, 1985, pp.

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