Method of making hydrophilic articles of water-insoluble polymers

US4194024A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

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

Key dates

• Filing date: May 8, 1978
• Grant date: Mar 18, 1980
• Expiry date: May 8, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2301/02
• 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.