Sulfonation of regenerated cellulose with sulfonated polymers and use of the thus modified fibres

US5986087A · kind A · utility

Assignee

• DyStar Textilfarben GmbH & Co. Deutschland KG · DE

Inventors

• Andreas Schrell · Hofheim, DE
• Bernd Huber · Schorndorf, DE

Key dates

• Filing date: Nov 21, 1997
• Grant date: Nov 16, 1999
• Expiry date: Nov 21, 2017

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06P3/6016
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

Sulfonated regenerated cellulose fiber obtained by adding a modifier to a viscose dope or alkali cellulose or cellulose solution and spinning fiber therefrom, wherefor the modifier is a starch etherified with C.sub.2 -C.sub.5 -alkylsulfonic acid radicals and having a degree of substitution of 0.1 to 3, a starch admixed with vinylsulfonic acid or a styrenesulfonic acid, or a polymeric styrenesulfonic acid or polymeric vinylsulfonic acid.