Thermoplastic block copolyesters, a process for the preparation thereof and their use for the production of mouldings

US4686262A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

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

Key dates

• Filing date: Dec 14, 1981
• Grant date: Aug 11, 1987
• Expiry date: Dec 14, 2001

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G63/18
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Block copolyesters based on polyalkylene terephthalates which contain polydiene blocks show an extremely low deformation even when they are processed into thin articles. They still have a crystallinity which is decreased by less than the ratio corresponding to the polydiene portion.