Block copolymers

US4473686A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Ulrich Grigo · New Martinsville, US
• Karl-Heinz Köhler · Aachen, DE
• Rudolf Binsack · Krefeld, DE
• Leo Morbitzer
• Josef Merten · Korschenbroich, DE
• Ludwig Bottenbruch · Krefeld, DE
• Walter Heitz · Kirchhain, DE

Key dates

• Filing date: Jun 1, 1983
• Grant date: Sep 25, 1984
• Expiry date: Jun 1, 2003

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S525/911
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A block copolymer is produced from PA1 I. 1 to 60% by weight of at least one telechelic diene polymer containing terminal carbonate ester, --OH--, --NH.sub.2 --, carboxylic acid or carboxylic acid ester groups and having a molecular weight M.sub.n of from about 400 to 1300, and PA1 II. 99 to 40% by weight of at least one polyamide or polyamide-forming component.