Stabiliser combinations for chlorine-containing polymers

US6194494A · kind A · utility

Assignee

• Witco Vinyl Additives GmbH · DE

Inventors

• Wolfgang Wehner · Ober-Ramstadt, DE
• Hans-Helmut Friedrich · Herbstein, DE
• Kornelia Malzacher · Lindenfels, DE
• Hans Mehner · Lampertheim, DE
• Rolf Drewes · Bad Bellingen, DE

Key dates

• Filing date: Jun 30, 1998
• Grant date: Feb 27, 2001
• Expiry date: Jun 30, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/39
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A stabiliser combination, mainly for PVC, is described, comprising PA1 A) at least one compound of formula I ##STR1## PA1 wherein R*.sub.1 and R*.sub.2 are each independently of the other C.sub.1 -C.sub.12 alkyl, C.sub.3 -C.sub.6 lkenyl, C.sub.5 -C.sub.8 cycloalkyl that is unsubstituted or substituted by from 1 to 3 C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.5 -C.sub.8 cycloalkyl or by hydroxy groups or by chlorine atoms, or C.sub.7 -C.sub.9 phenylalkyl that is unsubstituted or substituted at the phenyl ring by from 1 to 3 C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.5 -C.sub.8 cycloalkyl or by hydroxy groups or chlorine atoms, PA2 and R*.sub.1 and R*.sub.2 may additionally be hydrogen and C.sub.1 -C.sub.12 alkyl, and PA2 Y is S or O, and PA1 B) at least one compound from the following groups: PA2 B1) perchlorate compounds, PA2 B2) glycidyl compounds, PA2 B3) beta-diketones and beta-keto esters, PA2 B4) dihydropyridines and polydihydropyridines, PA2 B5) polyols and disaccharide alcohols, PA2 B6) sterically hindered amines (tetraalkylpiperidine compounds), PA2 B7) alkali aluminosilicates (zeolites), PA2 B8) hydrotalcites, PA2 B9) alkali aluminocarbonates (dawso…