Thermoplastic resins with a low proportion of coarse particles

US6797784B1 · kind B1 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Michael Zobel · Bridgwater, GB
• Dieter Wittmann · Leverkusen, DE
• Herbert Eichenauer · Dormagen, DE
• Alfred Eitel · Dormagen, DE
• Thomas Eckel · Dormagen, DE
• Bernd Keller · Lompoc, US
• Hans-Bernhard Hauertmann · Dormagen, DE
• Dorothy Rose · Dormagen, DE

Key dates

• Filing date: May 3, 2001
• Grant date: Sep 28, 2004
• Expiry date: May 3, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L69/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to homopolymers and/or copolymers containing <100 ppm coarse particles with a particle diameter of between 200 and 500 &mgr;m, to thermoplastic moulding materials containing said homopolymtrs and/or copolymers, to the use of the homopolymers and/or copolymers and moulding materials for the production of moulded parts and to the moulded parts themselves.