Phosphoric acid compounds as co-stabilizers for Me(II)-carboxylates and/or Me(II)-phenolates in PVC

US4639482A · kind A · utility

Assignee

• Ciba-Geigy · US

Inventors

• Horst Muller · Cologne, DE
• Horst Zinke · Ernsthofen, DE
• Wolfgang Wehner · Ober-Ramstadt, DE

Key dates

• Filing date: Mar 21, 1983
• Grant date: Jan 27, 1987
• Expiry date: Mar 21, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/5398
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Compositions for the stabilization of polyvinylchloride comprising blends or tri- and tetrathiophosphoric acid esters and at least one polyvinylchloride stabilizer of the type Me(II)-carboxylate and/or Me(II)-phenolate as well as the polyvinylchloride stabilized therewith.