Process for the production of water-soluble hydrolyzed products of polyacrylonitrile polymers

US4357437A · kind A · utility

Assignee

• Wolff Walsrode AG · DE

Inventors

• Helmut Huhn · Walsrode, DE
• Werner Karstens · Bad Fallingbostel, DE
• Lutz Hoppe

Key dates

• Filing date: Jul 23, 1981
• Grant date: Nov 2, 1982
• Expiry date: Jul 23, 2001

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F8/12
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for the production of water-soluble hydrolyzed polyacrylonitrile polymers, wherein the acrylonitrile is polymerized in the presence of 1-8% by weight of hydrolyzed polyacrylonitrile and hydrolyzed without intermediate isolation from the reaction mixture.