Process of producing copper phthalocyanine pigment having a brig

Details Process of producing copper phthalocyanine pigment having a brig Process of producing copper phthalocyanine pigment having a brig

1996-03-18

1997-12-16

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

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

106411, 106493, C09B 6750

Patent

active

056980230

ABSTRACT:
This invention provides a process for producing copper phthalocyanine pigments which comprises reacting either phthalic anhydride or its derivatives with urea and a copper-containing substance, or either phthalonitrile or its derivative with a copper-containing substance in a reaction solvent by heating characterized in that an alkylxylene ingredient having a branched C4 side-chain represented by the following formula (1) is used as the reaction solvent: ##STR1##

REFERENCES:
patent: 4140695 (1979-02-01), Takeuchi et al.
patent: 5318623 (1994-06-01), Azuma et al.

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