Self-extinguishing thermoplastic molding compositions

US4200702A · kind A · utility

Assignee

• BASF SE

Inventors

• Hermann Gausepohl · Mutterstadt, DE
• Herbert Naarmann · Wattenheim, DE
• Klaus Penzien · Bischofswerda, DE
• Rudolf Stephan · Ludwigshafen, DE

Key dates

• Filing date: Jun 5, 1978
• Grant date: Apr 29, 1980
• Expiry date: Jun 5, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L25/18
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Thermoplastic molding compositions based on rubber-modified styrene-acrylonitrile copolymers containing a halogenated styrene oligomer as the effective flame-proofing agent which is sufficiently heat-stable, does not interfere with processing on conventional machinery, does not corrode or cause coatings on such machinery, and has virtually no adverse effect on the impact strength of the polymers. The flameproofing agent as a rule has a degree of polymerization of from 3 to 200 and can be incorporated into the polymer by conventional methods; the polymer may or may not contain additional synergistic agents and processing auxiliaries, which are incorporated in the conventional manner and in the conventional amounts.