Sterile nonwovens bonded using polyurethane dispersions

US6063498A · kind A · utility

Assignee

• BASF SE

Inventors

• Ulrike Licht · Mannheim, DE
• Karl Haberle · Speyer, DE
• Peter Claassen · Ludwigshafen, DE
• Albrecht Seher · Ludwigshafen, DE
• Karl-Heinz Schumacher · Ludwigshafen, DE
• Hermann Seyffer · Heidelberg, DE

Key dates

• Filing date: Nov 3, 1998
• Grant date: May 16, 2000
• Expiry date: Nov 3, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31551
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for producing sterile nonwovens comprises a textile fabric composed of a fiber web being impregnated with an aqueous dispersion comprising a polyurethane, then dried and irradiated with .gamma.-rays.