Azo dyes containing polyethyleneimine with an aniline diazo component and a hydroxynaphthalene, aminopyridine or acetoacetic coupling component

US4962190A · kind A · utility

Assignee

• BASF SE

Inventors

• Udo Mayer · Bischofswerda, DE
• Friedrich-Wilhelm Raulfs · Ludwigshafen, DE

Key dates

• Filing date: Nov 21, 1988
• Grant date: Oct 9, 1990
• Expiry date: Nov 21, 2008

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S534/03
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Polyethyleneimine-containing azo dyes of the formula EQU [(D-N=N-K-).sub.y X-].sub.m P where PA0 D is the radical of a diazo component which is derived from an isocyclic aromatic amine or from a heteroaromatic amine and is free of hydroxysulfonyl groups, PA0 K is the radical of a coupling component of the hydroxynaphthalene, aminopyridine or pyrazolone series which has at most one hydroxysulfonyl group, or is the radical of a coupling component derived from acetoacetic acid, PA0 y is 1 or 2, PA0 X is a covalent bond or a bridge member if y is 1 or a bridge member if y is 2, and PA0 P is the radical of a polyethyleneimine whose degree of polymerization n is from 5 to 25000, and the number m of chromophore radicals is dependent upon the degree of polymerization n and is defined by the ratio m:n=from 1:1 to 1:35, with the proviso that when K is substituted by hydroxysulfonyl the ratio m:n is from 1:2 to 1:35, are useful for dyeing or printing fiber materials and for preparing inks for the ink jet process.