Process for producing azo pigment

Details Process for producing azo pigment Process for producing azo pigment

1987-07-31

1989-02-14

Lieberman, Paul

Compositions: coating or plastic

Materials or ingredients

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

106402, 534839, 534861, 534883, C09B 2901, C09B 2915

Patent

active

048044156

ABSTRACT:
A process for producing an azo pigment, which comprises coupling an aromatic diazonium compound with 3-hydroxy-2-naphthoic acid and at least one binaphthol and optionally, laking the resulting pigment.

REFERENCES:
patent: 4224221 (1980-09-01), Burley et al.
patent: 4224222 (1980-09-01), Burley et al.
patent: 4530724 (1985-07-01), Ueno et al.
patent: 4655844 (1987-04-01), Ueno et al.
European Search Report dated Jan. 15, 1988.

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