Polyurethane-urea fibres with improved resistance

US6663959B1 · kind B1 · utility

Assignees

• BAYER HEALTHCARE LLC · DE
• Bayer Faser GmbH · DE

Inventors

• Uwe Zweering · Leverkusen, DE
• Thomas Gross · Wermelskirchen, DE
• Stephan Hutte · Leverkusen, DE
• Andreas Endesfelder · Overath, DE

Key dates

• Filing date: Apr 24, 2002
• Grant date: Dec 16, 2003
• Expiry date: Apr 24, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2973
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polyurethane-urea compositions are described, and, in particular, elastic polyurethane-urea fibers are described which result therefrom and which contain a dialkylsulphosuccinate as a finely dispersed or dissolved additive which considerably increases the strength of the fibers. Moreover, a method is described of producing polyurethane-urea fibers using a dialkylsulphosuccinate as an additive.