Flame retarding polyamide molding compositions

US4036811A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Siegfried Noetzel
• Walter Herwig · Bad Soden, DE

Key dates

• Filing date: Oct 6, 1975
• Grant date: Jul 19, 1977
• Expiry date: Oct 6, 1995

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/53
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

There are disclosed novel flame retarding polyamide molding compositions containing, as the flameproofing agents, an amount of from 6 to 40, preferably 8 to 30 weight % of an alkali metal or a group II or III metal salt of a phosphinic or diphosphinic acid. The flameproofing agents are thermostable and do not adversely affect the polyamides during preparation and processing.