Continuous preparation of oxymethylene polymers

US4431794A · kind A · utility

Assignee

• BASF SE

Inventors

• Juergen Sadlowski · Münster, DE
• Manfred Walter · Nuremberg, DE
• Klaus Hinselmann · Mutterstadt, DE

Key dates

• Filing date: Nov 22, 1982
• Grant date: Feb 14, 1984
• Expiry date: Nov 22, 2002

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Oxymethylene polymers are prepared by a continuous process, by mass polymerization of the monomers with the aid of conventional, preferably cationic, initiators, wherein the monomers as well as the resulting polymer are present substantially in molten form during the polymerization.