Flame-resistant, thermoplastic polyurethane elastomers, process for their preparation, and their use

US4748195A · kind A · utility

Assignee

• BASF SE

Inventors

• Christa Hackl · Bad Essen, DE
• Dietrich Wagner · Osnabrück, DE
• Hans-Malte Rombrecht · Hamburg, DE

Key dates

• Filing date: Dec 8, 1986
• Grant date: May 31, 1988
• Expiry date: Dec 8, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K13/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to flame-resistant, thermoplastic polyurethane elastomers containing a flame-retardant additive package comprising: PA0 (a) a compound selected from the group consisting of antimony trioxide, zinc borate and mixtures thereof, PA0 (b) a chlorinated polyethylene, and PA0 (c) a brominated aromatic compound, preferably selected from the group consisting of polytetrabromobis(phenol)-A-glycidyl ether), polytribromostyrene, and polytetrabromobis(phenol)-A-carbonate). The flame-retardant additive package may be incorporated into the starting components used to prepare the thermoplastic polyurethane prior to the reaction which forms the polyurethane, to the reaction mixture during the reaction, or to the finished thermoplastic polyurethane elastomers. The flame resistant, thermoplastic polyurethane elastomers are suitable for the preparation of, for example, molded articles, films, sheets, and cable jackets.