Flame resistant polyamide moulding compositions

US4062828A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Walter Herwig · Bad Soden, DE
• Hans-Jerg Kleiner · Kronberg, DE

Key dates

• Filing date: May 21, 1976
• Grant date: Dec 13, 1977
• Expiry date: May 21, 1996

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/5397
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to novel agents for the flame-proofing of polymers, especially transparent polyamides. These agents, phosphinylphosphinic acids, are used in quantities of 3 to 40 weight percent calculated on the weight of the polymer. These flame-proofing agents can easily be prepared and render the polymers flame-proof to a high degree without deteriorating the mechanical and physical properties.