Uniformly dyed water-swellable cellulosic fibers

US4157893A · kind A · utility

Assignee

• BASF SE

Inventors

• Johannes Dehnert · Ludwigshafen, DE
• Guenter Dunkelmann

Key dates

• Filing date: Apr 7, 1978
• Grant date: Jun 12, 1979
• Expiry date: Apr 7, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B29/3669
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Uniformly dyed water-swellable cellulosic fibers obtained by dyeing cellulosic fibers in the swollen state with a dye of the formula ##STR1## in which one R is R.sup.1, OR.sup.1, SR.sup.1 or ##STR2## the other R is ##STR3## R.sup.1 and R.sup.2 independently of one another are hydrogen or an aliphatic, cycloaliphatic, araliphatic or aromatic radical, ##STR4## may also be a saturated heterocyclic radical, and D is the radical of a diazo component. The dyed fibers exhibit very good fastness properties.