Process for the manufacture of a monoazo acetoacetylaminobenzimi

Details Process for the manufacture of a monoazo acetoacetylaminobenzimi Process for the manufacture of a monoazo acetoacetylaminobenzimi

1989-06-15

1990-03-06

Higel, Floyd D.

Organic compounds -- part of the class 532-570 series

Organic compounds

Azo

534742, 534887, 106496, C09B 2636, C09B 6748, C09B 6754, C09B 6710

Patent

active

049067354

ABSTRACT:
An improved process for the manufacture of a monoazo acetoacetylaminobenzimidazolone pigment of the formula ##STR1## by coupling the components in an aqueous medium in the presence of an oxethylation product of an alcohol or alcohol mixture having from 8 to 14 carbon atoms and 3 to 10 mols of ethylene oxide, and heating the aqueous pigment suspension after complete coupling. The pigment thus obtained avoids an after-treatment in anhydrous organic solvents and has good tinctorial strength, high hiding power and good properties with respect to flow and dispersibility.

REFERENCES:
patent: 3109842 (1963-11-01), Schilling et al.
patent: 3124565 (1964-03-01), Schilling et al.
patent: 3137686 (1964-06-01), Dietz et al.
patent: 3328384 (1967-06-01), Dietz et al.
patent: 4024124 (1977-05-01), Ribka

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