Halogen-free flameproof molding materials

US4914144A · kind A · utility

Assignee

• BASF SE

Inventors

• Klaus Muehlbach · Havelsee, DE
• Graham E. McKee · Ludwigshafen, DE
• Hermann Brandi
• Dieter W. Blum · Regina, CA

Key dates

• Filing date: Dec 16, 1988
• Grant date: Apr 3, 1990
• Expiry date: Dec 16, 2008

Classification

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

Abstract

A flameproof, halogen-free thermoplastic molding material contains, based on the molding material consisting of A, B, C, D and E, PA0 (A) 40 to 95% by weight of a thermoplastic halogen-free aromatic polycarbonate based on a diphenol, PA0 (B) from 5 to 30% by weight of one or more halogen-free graft polymers obtained from, based on B, PA1 (b.sub.1) an elastomer (rubber), which accounts for from 40 to 80% by weight, and PA1 (b.sub.2) a graft shell on this elastomer which accounts for from 20 to 60% by weight, PA0 (C) from 5 to 50% by weight of one or more halogen-free thermoplastic copolymers consisting of, based on C, from 50 to 95% by weight of styrene, .alpha.-methylstyrene, styrene which is substituted in the nucleus, methyl methacrylate or a mixture of these, and from 50 to 5% by weight of (meth)acrylonitrile, methyl methacrylate, maleic anhydride, N-substituted maleimide or a mixture of these, PA0 (D) 1 to 25% by weight of one or more halogen-free phosphorus compounds of the formula ##STR1## where R.sup.1, R.sup.2 and R.sup.3 independently of one another are each halogen-free C.sub.1 -C.sub.8 -alkyl or halogen-free C.sub.6 -C.sub.20 -aryl and n is 0 or 1, and PA0 (E) from 0.05 …