Amination of rayon

US5565007A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Andreas Schrell · Hofheim, DE
• Werner Russ · Flörsheim, DE
• Bernd Huber · Schorndorf, DE

Key dates

• Filing date: May 15, 1995
• Grant date: Oct 15, 1996
• Expiry date: May 15, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S8/921
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

Modified rayon is produced by adding a modifier to a cellulose solution and spinning fibers from the solution, or by adding a modifier to an alkali cellulose solution or material, xanthating and spinning fibers by the viscose spinning process, wherein the modifier is an amine of the formula (1a), (1b), (1c), (1d) or (1e) ##STR1## The modified rayon produced in this way can be dyed with reactive dyes without addition of electrolyte salt or alkali and have significantly more affinity than conventional viscose fibers.