Process for the preparation of disperse dyes having good printing properties for transfer printing

US4145182A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Konrad Opitz · Liederbach, DE
• Christa Uhde · Kriftel, DE

Key dates

• Filing date: Feb 2, 1978
• Grant date: Mar 20, 1979
• Expiry date: Feb 2, 1998

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06P5/006
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Disperse dyestuffs which are sufficiently capable of subliming for serving in the transfer print process but which yield printing inks of a too high viscosity can be finished to fit the requirements for printing inks for transfer printing by treating said dyestuffs in a liquid medium at a temperature between 50.degree. and 180.degree. C. Thus printing inks of sufficiently low and constant viscosity can be obtained.