Permanent hydrophilic modification of fluoropolymers

US5630941A · kind A · utility

Inventors

• Wolfgang Burger · Burgrain, DE
• Klaus Lunkwitz · Dresden, DE
• Heide-Marie Buchhammer · Dresden, DE

Key dates

• Filing date: Nov 15, 1995
• Grant date: May 20, 1997
• Expiry date: Nov 15, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/249979
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A permanent hydrophilic modification for fluoropolymer substrates is described in which the substrate is coated with a film of a charged polyelectrolyte complex. The film has cationic and anionic components in which the charges on the components interact to form stable electrolytic bonds.