Process for the preparation of azo dyestuffs on fiber materials consisting of, or containing, cellulose fibers

US4201547A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Erich Feess · Hofheim, DE
• Hartmut Springer · Königstein, DE
• Paul Karacsonyi · Frankfurt am Main, DE
• Willy Gronen
• Horst Curtius · Kelkheim, DE

Key dates

• Filing date: Mar 20, 1978
• Grant date: May 6, 1980
• Expiry date: Mar 20, 1998

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06P3/68
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Azo developing dyestuffs are produced by diazotizing on the fiber a mono- to tetramine derived from a metal-containing or metal-free phthalocyanine, the amino group(s) being bound to a phenyl or naphthyl group (which may be substituted) which is linked via a bridge member to the phthalocyanine which may further contain up to 3 optionally substituted sulfon amide groups and up to 3 sulfo groups, and coupling said diazotized amino onto azoic coupling components usual for preparing developing dyestuffs.