Thermoplastic moulding compositions

• Main Authors: MARGOTTE, DIETER, NOUVERTNE, WERNER, WINGLER, FRANK, LIEBIG, LOTHAR
• Format: Patent
• Language: English
• Published: 27.05.1980
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

A thermoplastic moulding composition comprising: (1.) 80 to 20 parts by wt. of a thermoplastic polycarbonate based on a dihydroxy diaryl alkane, (2.) 20 to 80 parts by wt. of a graft polymer of 2.2. a monomer mixture, polymerized onto 2.1. a diene rubber with a glass transition temperature below -30 DEG C., of 2.2.1. 95 to 50% by wt. of styrene, methyl methacrylate or a mixture thereof; and 2.2.2. 50 to 5% by wt. of acrylonitrile, methacrylonitrile or a mixture thereof, the ratio by wt. of rubber (2.1) to monomer mixture (2.2.) being in the range of from 80:20 and 10:90, and the moulding composition containing from 5 to 35% by wt. of the rubber (2.1.), and (3.) 5 to 75 parts by wt. of a copolymer which is chemically uniform in structure and which comprises: (3.1.) 93 to 50 parts by wt. of styrene, methyl methacrylate or a mixture thereof; (3.2.) 40 to 5 parts by weight of acrylonitrile, methacrylonitrile or a mixture thereof; and (3.3.) 2 to 30 parts by wt. of maleic acid anhydride.