Method for making polymethacrylimide polymers

US5324793A · kind A · utility

Assignee

• Rohm Co., Ltd. · JP

Inventors

• Manfred Brehm · Aschaffenburg, DE
• Hartwig Droegemueller · Darmstadt, DE
• Norbert Rau · Ober-Ramstadt, DE
• Thomas Rhein · Stadecken-Elsheim, DE

Key dates

• Filing date: Sep 14, 1992
• Grant date: Jun 28, 1994
• Expiry date: Sep 14, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F8/48
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polymethacrylimide polymers poor in amide or N-alkylamide groups and in carboxyl and carbonic acid anhydride groups are obtained by heating a copolymer consisting of 1 to 60 mol percent of methacrylamide or/and an N-alkyl-methacrylamide and 40-99 mol percent of an alkyl methacrylate or/and phenyl methacrylate in an aliphatic monoalcohol.