Foam sheets of high heat distortion resistance

US5071703A · kind A · utility

Assignee

• BASF SE

Inventors

• Reinhold Weber · Biberach an der Riß, DE
• Gerhard Alicke · Worms, DE
• Manfred Weilbacher · Bischofswerda, DE
• Uwe Guhr · Havelsee, DE
• Klaus Hahn · Lampertheim, DE

Key dates

• Filing date: Jan 10, 1991
• Grant date: Dec 10, 1991
• Expiry date: Jan 10, 2011

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/269
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Foam sheets of high heat distortion resistance contain a) from 80 to 99% by weight of a styrene polymer and b) from 1 to 20% by weight of poly(2,6-dimethyl-1,4-phenylene oxide), and, if desired, conventional additives and are produced by extrusion using a low-boiling blowing agent.