Process for the preparation of a concentrated aqueous reactive dyestuff solution

US4778603A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Jochen Koll · Odenthal, DE
• Joachim Wolff · Odenthal, DE
• Detlef Szeymies · Kürten, DE

Key dates

• Filing date: Jan 22, 1988
• Grant date: Oct 18, 1988
• Expiry date: Jan 22, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B67/0096
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Ultrafiltered solutions of the dyestuff of the formula ##STR1## (Me=cation) such as is obtained directly on synthesis, are distinguished by an increased tinctorial strength in pad-steam dyeing of cellulose fibres.