Aliphatic thermoplastic polyurethanes, processes for their preparation and their use

US6518389B1 · kind B1 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Wolfgang Kaufhold · Recklinghausen, DE
• Hans-Georg Hoppe · Leichlingen, DE
• Herbert Heidingsfeld · Frechen, DE
• Bernhard Schulte · Krefeld, DE
• Henricus Peerlings · Solingen, DE

Key dates

• Filing date: Dec 13, 1999
• Grant date: Feb 11, 2003
• Expiry date: Dec 13, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2140/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A thermoplastic composition comprising aliphatic polyurethane is disclosed. The composition is charactrized in having a post weathering yellow value lower than 20 and good hardness and softening temperature values both before and after weatering for 504 hours in accordance with ISO 4892.