Process for adjusting the viscosity of highly concentrated elastane solutions for the dry spinning or wet spinning of elastane fibres

US5610229A · kind A · utility

Assignee

• Bayer Faser GmbH · DE

Inventors

• Ulrich Reinehr · Dormagen, DE
• Gunter Turck · Dormagen, DE
• Tilo Sehm · Düsseldorf, DE
• Wolfgang Anderheggen · Dormagen, DE
• Toni Herbertz · Dormagen, DE
• Gino Antolini · Bergamo, IT

Key dates

• Filing date: May 7, 1996
• Grant date: Mar 11, 1997
• Expiry date: May 7, 2016

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D01F6/70
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a process for adjusting the viscosity of highly concentrated elastane solutions by reaction of the solution with secondary aromatic amines in order to produce spinning solutions for the dry or wet spinning of elastane fibers.