Polycarbonate moulding materials with improved toughness

US5679759A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Dieter Wittmann · Leverkusen, DE
• Thomas Eckel · Dormagen, DE
• Heinrich Alberts
• Herbert Eichenauer · Dormagen, DE
• Ulrich Jansen · Düsseldorf, DE

Key dates

• Filing date: Sep 20, 1995
• Grant date: Oct 21, 1997
• Expiry date: Sep 20, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L69/005
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Thermoplastic moulding materials containing PA0 A. 15 to 80 parts by weight of a thermoplastic polycarbonate or polyester carbonate, and PA0 B. 4 to 40 parts by weight of a graft polymer of PA1 B.1 20 to 60 weight % of one or more monomers on PA1 B.2 40 to 80 weight % of one or more graft bases having glass transition temperatures <0.degree. C., and PA0 C. 16 to 45 parts by weight of a thermoplastic, aromatic vinyl (co)polymer, wherein the graft base B.2 has an average particle size (d.sub.50 value) of 0.20 to 0.35 .mu.m and the weight ratio of components B:C is between 2:1 and 1:4.