Thermoplastic molding material based on polycarbonate, ASA and vinylaromatics/an-containing copolymers

US4880875A · kind A · utility

Assignee

• BASF SE

Inventors

• Georg Wassmuth · Ludwigshafen, DE
• Karl Ruppmich · Ludwigshafen, DE
• Erhard Seiler · Ludwigshafen, DE
• Hermann Gausepohl · Mutterstadt, DE
• Klaus Benker · Neustadt, DE

Key dates

• Filing date: Apr 28, 1987
• Grant date: Nov 14, 1989
• Expiry date: Apr 28, 2007

Classification

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

Abstract

A thermoplastic molding material containing, based on components A, B and C, PA1 A from 10 to 90% by weight of one or more polycarbonates, PA1 B from 10 to 50% by weight of one or more graft copolymers, PA1 C from 10 to 50% by weight of one or more thermoplastic copolymers containing a vinylaromatic monomer of 8 to 12 carbon atoms and acrylonitrile, wherein component B is composed of PA1 B.sub.1 a first, coarsely divided graft copolymer which has an average particle size of from 200 to 700 nm (d.sub.50 value of cumulative molecular weight distribution) in a proportion of from 30 to 70% by weight, based on B, and PA1 B.sub.2 a second, finely divided graft copolymer which has an average particle size of from 50 to 180 nm (d.sub.50 value of cumulative molecular weight distribution) in a proportion of from 70 to 30% by weight, based on B, is used for producing moldings.