Stabilizer combinations for chlorine-containing polymers

US5925696A · kind A · utility

Assignee

• Ciba Speciality Chemicals Corp. · US

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: Oct 10, 1996
• Grant date: Jul 20, 1999
• Expiry date: Oct 10, 2016

Classification

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

Abstract

A stabilizer combination, mainly for PVC, is described, comprising PA0 A) at least one compound of formula I ##STR1## 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, PA1 and R*.sub.1 and R*.sub.2 may additionally be hydrogen and C.sub.1 -C.sub.12 alkyl, and Y is S or O, and PA0 B) at least one compound from the following groups: PA0 B1) perchlorate compounds, PA0 B2) glycidyl compounds, PA0 B3) beta-diketones and beta-keto esters, PA0 B4) dihydropyridines and polydihydropyridines, PA0 B5) polyols and disaccharide alcohols, PA0 B6) sterically hindered amines (tetraalkylpiperidine compounds), PA0 B7) alkali aluminosilicates (zeolites), PA0 B8) hydrotalcites, PA0 B9) alkali aluminocarbonates (dawsonites), …