Monomeric and oligomeric bisphosphites as stabilisers for polyvinyl chloride

US5969015A · kind A · utility

Assignee

• Witco Vinyl Additives GmbH · DE

Inventors

• Horst Zinke · Ernsthofen, DE
• Karl-Josef Kuhn · Herbstein, DE
• Wolfgang Wehner · Ober-Ramstadt, DE

Key dates

• Filing date: Sep 10, 1997
• Grant date: Oct 19, 1999
• Expiry date: Sep 10, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2040/20
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Compositions, comprising (i) a halogen-containing polymeric material, and PA1 (ii) at least one phosphite of formula I ##STR1## wherein n is a number from 1 to 6, PA2 R is a divalent linking group of formulae as defined herein as well as of novel compounds of formula I and their use as stabilisers.