Polysiloxane block copolymers

US4699967A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Herbert Eichenauer · Dormagen, DE
• Christian Lindner · Bensheim, DE
• Karl-Heinz Ott
• Peter Orth · Neunburg vorm Wald, DE
• Hartwig Hocker · Eckersdorf, DE

Key dates

• Filing date: Jan 21, 1986
• Grant date: Oct 13, 1987
• Expiry date: Jan 21, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/46
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Block copolymers of recurring structural units of the series of polysiloxanes and recurring structural units of the series of aliphatic polyesters, polyethers or polyetheresters with rubber properties, the polymeric block-forming polymers in each case producing rubber-type products with glass transition temperatures below practical temperatures of use and a process for the production thereof.