Process for dyeing or printing textile fibre materials in stable black shades using metal complex reactive dyes with a red shift and a yellow or green shift

US4828572A · kind A · utility

Assignee

• Ciba-Geigy · US

Inventors

• Wolfgang Sutterlin · Lörrach, DE
• Rainer Begrich · Basel, CH

Key dates

• Filing date: Oct 13, 1987
• Grant date: May 9, 1989
• Expiry date: Oct 13, 2007

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S8/926
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a process for dyeing or printing textile fibre materials in stable shades with reactive dyes which produce grey or black dyeings or prints, which process comprises dyeing or printing textile fibre materials with a mixture of heavy metal-containing, water-soluble reactive dyes which produce grey or black dyeings or prints, each component of which mixture, under identical dyeing, printing and fixation conditions, produces dyeings or prints with a tinge different from the tinge of the dyeings or prints produced by the other component, and carrying out subsequent fixation.