Process for dyeing cellulosic textile materials

US4612016A · kind A · utility

Assignee

• Ciba-Geigy · US

Inventors

• Carl A. Jaeger · Steinen, DE
• Hans-Ulrich Berendt · Allschwil, CH
• Paul Schafer · Riehen, CH

Key dates

• Filing date: Feb 27, 1985
• Grant date: Sep 16, 1986
• Expiry date: Feb 27, 2005

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S8/918
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

Cellulosic textile material is dyed with substantive dyes or preferably with reactive dyes. Dyeing is carried out by applying to the cellulosic material, by a non-pad method, an aqueous dye liquor which contains, in addition to the dye, a graft polymer which is obtained from an adduct of an alkylene oxide, preferably propylene oxide, with an at least trihydric aliphatic alcohol, e.g. glycerol, and acrylamide or methacrylamide. The cellulosic material is then subjected to a heat treatment, e.g. by steaming or with microwaves, or is preferably stored cold, to fix the dyes. This dyeing process affords dyeings with excellent penetration of the fabric and with level depth of shade from edge to edge.