Expandable styrene polymers

US5266602A · kind A · utility

Assignee

• BASF SE

Inventors

• Manfred Walter · Nuremberg, DE
• Wolfram Husemann · Neustadt, DE
• Dieter Naegele · Worms, DE

Key dates

• Filing date: Nov 20, 1991
• Grant date: Nov 30, 1993
• Expiry date: Nov 20, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2325/04
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

An expandable styrene polymer comprising PA0 a) a styrene polymer, PA0 b) from 1 to 10% by weight, based on a), of a saturated C.sub.3 - to C.sub.6 -hydrocarbon as blowing agent, and, if desired, PA0 c) conventional assistants in effective amounts, has a benzene content of less than 1 ppm and a styrene content of less than 2000 ppm.