Polyetherpolyamide copolymers

US4356300A · kind A · utility

Assignee

• Inventa AG Fur Forschung und Patentverwertung · CH

Inventors

• Walter Isler · Paspels, CH
• Eduard Schmid · Bonaduz, CH

Key dates

• Filing date: Feb 21, 1980
• Grant date: Oct 26, 1982
• Expiry date: Feb 21, 2000

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G69/40
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polyetherpolyamide copolymers are disclosed which comprise the product of the polycondensation of a diamine with the equivalent amount of a dicarboxylic acid and a common polyamide forming component, wherein the diamine contains a polyether block containing at least 3 ether oxygen atoms separated from each other by a carbon chain selected from the group consisting of linear carbon chains of at least 3 carbon atoms, branched carbon chains of at least 2 carbon atoms between the ether oxygen atoms and mixtures thereof and a common polyamide block which is mainly a homopolyamide. The present compositions exhibit improved flexibility and low temperature properties and may be processed by injection molding and extrusion techniques.