Water-soluble black trisazo dyestuffs

Details Water-soluble black trisazo dyestuffs Water-soluble black trisazo dyestuffs

1988-12-12

1990-04-17

Lieberman, Paul

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

534754, 534583, C09D 1102

Patent

active

049177311

ABSTRACT:
Water-soluble black trisazo dyestuffs of the general formula I ##STR1## wherein R denotes hydrogen, alkyl having 1 or 2 carbon atoms, alkoxy having 1 or 2 carbon atoms, acylamino having 2 or 3 carbon atoms or carboxamide and n denotes a number from 0 to 2.5 are suitable for the preparation of recording fluids.

REFERENCES:
patent: 4033945 (1977-07-01), Bauer et al.
patent: 4144230 (1979-03-01), Bauer et al.
patent: 4144231 (1979-03-01), Bauer et al.

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