Process for the preparation of polymers containing hydantoin groups

US4269750A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Jurgen Lewalter · Odenthal, DE
• Ludwig Rottmaier · Odenthal, DE
• Rudolf Merten · Leverkusen, DE
• Wilfried Zecher · Leverkusen, DE
• Willi Dunwald · Leverkusen, DE
• Bernhard Schulte · Krefeld, DE

Key dates

• Filing date: Dec 5, 1979
• Grant date: May 26, 1981
• Expiry date: Dec 5, 1999

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G73/0616
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for the production of compounds containing hydantoin groups by reacting .alpha.-amino-carboxylic acid derivatives and organic isocyanates in the presence of acid groups and either in absence of any solvent or in the presence of a non-phenolic solvent.