Flameproofed molding composition

US5219907A · kind A · utility

Assignee

• BASF SE

Inventors

• Norbert Niessner · Friedelsheim, DE
• Rainer Neumann · Krefeld, DE
• Karl Ruppmich · Ludwigshafen, DE
• Friedrich Seitz · Friedelsheim, DE
• Doris Zeltner · Wasserburg am Inn, DE

Key dates

• Filing date: Sep 25, 1992
• Grant date: Jun 15, 1993
• Expiry date: Sep 25, 2012

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S525/902
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A flame retardant molding composition contains a halogen-free polycarbonate at least one halogen-free graft copolymer assembled from copolymerized units of an elastomer and certain ethylenically unsaturated monomers which include 1-50% by weight of an organic phosphorus compound of the formula (I) ##STR1## a halogen-free thermoplastic copolymer comprising styrene, .alpha.-alkylstyrene, nuclear-substituted styrene and/or C.sub.1 -C.sub.8 -alkyl (meth)acrylate, and (meth)acrylonitrile and/or maleic anhydride, as well as 1-46% by weight of a halogen-free phosphorus compound of the formula (I): Optionally a monophosphate additive and up to 5% by weight of a polytetrafluoroethylene with a median particle size of from 0.05 to 20 .mu.m may be added.