Hydrophilic articles of water-insoluble polymers

US4186238A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Arno Holst
• Michael Kostrzewa · Wiesbaden, DE
• Helmut Lask · Wiesbaden, DE

Key dates

• Filing date: Sep 30, 1977
• Grant date: Jan 29, 1980
• Expiry date: Sep 30, 1997

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31986
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

This invention relates to a hydrophilic shaped article of a water-insoluble polymer selected from the group consisting of regenerated cellulose, cellulose ether, cellulose ester and polyalkylene, and capable of forming fibers and films, said article containing amorphous particles of an originally water-soluble cellulose ether prepared from natural cellulose and rendered by chemical modification at least partly water-insoluble while remaining water-absorbent.