Stabilized chlorine-containing polymers

US5244949A · kind A · utility

Assignee

• Ciba-Geigy · US

Inventors

• Hermann O. Wirth · Bensheim, DE
• Hans Sander · Ludwigshafen, DE
• Olaf Hartmann · Jena, DE

Key dates

• Filing date: Nov 22, 1991
• Grant date: Sep 14, 1993
• Expiry date: Nov 22, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/3435
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Chlorine-containing polymers can be stabilised against thermal and actinic degradation by addition of a sterically hindered amine and a zinc compound in the absence of other organometallic compounds. It is preferred additionally to add a 1,3-dicarbonyl compound.