Expandable styrene polymers

US5496864A · kind A · utility

Assignee

• BASF SE

Inventors

• Rolf Henn · Ketsch, DE
• Klaus Hahn · Lampertheim, DE
• Hans Ho/ nl · Monschau, DE
• Walter Heckmann · Weinheim, DE
• Karl-Heinz Wassmer · Mutterstadt, DE
• Erich Klement · Rimbach, DE
• Joachim Fischer · Rodgau, DE

Key dates

• Filing date: May 12, 1995
• Grant date: Mar 5, 1996
• Expiry date: May 12, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2453/00
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to expandable styrene polymers for elastic polystyrene foams, comprising PA0 a) from 50 to 75% by weight of polystyrene and/or a styrene copolymer containing at least 50% by weight of copolymerized styrene, PA0 b) from 5 to 30% by weight of a styrene-soluble elastomer, PA0 c) from 5 to 20% by weight of at least one block copolymer containing styrene as one component, PA0 d) from 15 to 50% by weight of at least one polyolefin, PA0 e) from 1 to 15% by weight, based on the sum of a) and b), of a low-boiling blowing agent, and, if desired, PA0 f) conventional additives in effective amounts, and to foams produced therefrom.