Modified diarylide pigments and their preparation

Details Modified diarylide pigments and their preparation Modified diarylide pigments and their preparation

1984-08-16

1986-07-29

Clingman, A. Lionel

Compositions: coating or plastic

Materials or ingredients

Miscellaneous

106288, 106308Q, 106308S, 534689, 534747, C09C 300

Patent

active

046029605

ABSTRACT:
A novel modified diarylide pigment contains (a) a pigment which is composed of a tetrazotized benzidine, coupled to an acetoacetarylide and/or a 1-phenyl-3-methylpyrazole-5-one, and (b) a water-soluble component obtained from a symmetric or asymmetric coupling product of a tetrazotized 4,4'-diamino-2,2'-stilbenedisulfonic acid and an acetoacetarylide and/or a 1-phenyl-3-methyl-5-pyrazolone. The novel pigments possess very good color strength, very good gloss characteristics and very good transparency, and exhibit improved printing characteristics, particularly in offset printing inks.

REFERENCES:
patent: 3672816 (1972-06-01), Dehnert et al.
patent: 3759731 (1973-09-01), Kuhne et al.
patent: 3776749 (1973-12-01), McKay et al.

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