Polycarbonate molding compositions with improved flame-repellency

US4208489A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Manfred Schmidt · Krefeld, DE
• Wolfgang Cohnen · Leverkusen, DE
• Frank Kleiner · Cologne, DE
• Dieter Freitag · Krefeld, DE
• Karsten-Josef Idel · Krefeld, DE

Key dates

• Filing date: Jan 9, 1978
• Grant date: Jun 17, 1980
• Expiry date: Jan 9, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/34
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Thermoplastic aromatic polycarbonate molding compositions with improved flame retardancy which contain an alkali metal salt of an organic or inorganic acid and optionally a perfluoroethylene, characterized in that they contain a tetrahalogenophthalimide of the general formulae (I) or (II) or mixtures thereof ##STR1## wherein R denotes a hydrogen atom or a C.sub.1 to C.sub.4 l alkyl, C.sub.6 H.sub.5, C.sub.10 H.sub.7, C.sub.6 H.sub.4 X, C.sub.6 H.sub.3 X.sub.2 or C.sub.6 H.sub.2 X.sub.3 group, in which X denotes a fluorine, chlorine or bromine atom, R' denotes a single bond or a C.sub.2 to C.sub.4 alkylene, C.sub.6 H.sub.4 or p-diphenylene radical, and Z denotes a chlorine or bromine atom, are provided.