Process for producing discharge reserve prints on textile materials with amino-azo-benzene dyes

US4386935A · kind A · utility

Assignee

• Cassella Aktiengesellschaft · DE

Inventors

• Ulrich Buhler · Alzenau, DE
• Klaus Kuhlein · Kelkheim, DE
• Theo Stahl · Frankfurt am Main, DE
• Horst Tappe · Dietzenbach, DE
• Kurt Roth · Waterloo, CA

Key dates

• Filing date: Sep 28, 1981
• Grant date: Jun 7, 1983
• Expiry date: Sep 28, 2001

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06P5/12
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

An improved process for producing discharge reserve prints on textile materials comprising water-repellent fibers or mixed water-repellent and cellulose fibers wherein a disperse dyestuff which is dischargeable to white is applied to the textile material in the form of a dye liquor or dye printing paste, at least partially drying the textile material, applying a discharge reserve printing paste to the material by printing on the material in the desired pattern and subsequently heating the printed material at temperatures from 100.degree. to 230.degree. C., with the improvement comprising (a) the discharge reserve printing paste containing, as the discharging agent, an alkaline material which produces a pH value of at least 8 in 5% strength aqueous solution and (b) the disperse dyestuff which is dischargeable to white is a disperse dyestuff of the formula ##STR1## as more fully defined herein.