Organic compounds -- part of the class 532-570 series – Organic compounds – Azo
Patent
1991-11-07
1993-10-26
Higel, Floyd D.
Organic compounds -- part of the class 532-570 series
Organic compounds
Azo
8639, 8641, 106 22D, 106 23K, 106493, 106402, 106494, 106495, 534863, 534864, 534865, C09B 6722, C09B 6300, C09D 1102, C09D 1700
Patent
active
052567729
ABSTRACT:
A monoazo lake pigment and use thereof; the monoazo lake pigment is obtained by subjecting to a coupling reaction a diazo component mixture containing a naphthalene-based or benzene-based amine having a soluble group and 0.1 to 20 mol %, based on said amine, of a naphthalene-based or benzene-based amine having no soluble group and a coupler component mixture containing either .beta.-naphthol or .beta.-oxynaphthoic acid and 0.1 to 30 mol %, based on said .beta.-naphthol or .beta.-oxynaphthoic acid, of at least one member selected from compounds of the following formulae (I) to (III), and carrying out a lake-forming reaction of a coupling reaction product during or after said coupling reaction, ##STR1## wherein each of X.sub.1, X.sub.2 and X.sub.3 is at least one water-insoluble group selected from the group consisting of a halogen atom, a lower alkoxy group, a lower alkyl group, a nitro group and an amino group substituted with a lower alkyl group.
REFERENCES:
patent: 2521908 (1950-09-01), Glass et al.
patent: 4154577 (1979-05-01), Mieder et al.
patent: 4767844 (1988-08-01), Ando et al.
Higel Floyd D.
Toyo Ink Manufacturing Co. Ltd.
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