Thermoplastic molding material

US5104936A · kind A · utility

Assignee

• BASF SE

Inventors

• Uwe Blumenstein · Ludwigshafen, DE
• Adolf Echte · Ludwigshafen, DE
• Peter Klaerner · Battenberg, DE

Key dates

• Filing date: Apr 12, 1990
• Grant date: Apr 14, 1992
• Expiry date: Apr 12, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L51/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Molding materials comprising a matrix of high impact polystyrene and rubber incorporated in the form of discrete particles contain not less than 50% by weight of polystyrene A and an effective amount of up to 50% by weight of a graft rubber B. The graft rubber B consists of from 40 to 95% by weight of an elastomeric core b.sub.1 and from 5 to 60% by weight of a shell b.sub.2, i.e. from 5 to 50% by weight of a first shell B.sub.21 of styrene and from 50 to 95% by weight of a second shell b.sub.22 of from 60 to 90% by weight of styrene and from 10 to 40% by weight of acrylonitrile, A and B, b.sub.1 and b.sub.2, b.sub.21 and b.sub.22 and styrene and acrylonitrile each summing to 100% by weight.