ABS polymer compositions having a uniform matt surface

US5605963A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Edgar Leitz · Dormagen, DE
• Herbert Eichenauer · Dormagen, DE
• Karl-Erwin Piejko · Bensberg, DE
• Dieter Wittmann · Leverkusen, DE
• Ekkehard Frohberg

Key dates

• Filing date: Feb 6, 1995
• Grant date: Feb 25, 1997
• Expiry date: Feb 6, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L55/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

ABS polymer compositions consisting of PA1 A) 5 to 80 parts by weight of at least one ABS polymer prepared by mass polymerization or solution polymerization, having rubber particles with an average particle diameter of from 800 to 15,000 nm and a rubber content of from 1 to 20% by weight, PA1 B) 1 to 50 parts by weight of at least one ABS polymer prepared by emulsion polymerization, having an average particle diameter of from 50 to 500 nm and a rubber content of from 20 to 80% by weight, PA1 C) 0 to 70 parts by weight of at least one thermoplastic vinyl resin prepared by radical polymerization of at least two monomer components selected from styrene, .alpha.-methylstyrene, methyl methacrylate, acrylonitrile, N-phenylmaleimide and PA1 D) 0.5 to 10 parts by weight of at least one polybutadiene prepared by emulsion polymerization, having an average particle diameter d.sub.50 in the latex form of from 80 to 500 nm and a gel content of from 10 to 95% by weight.