.beta.-keto esters as stabilizers for chlorinated polymers

US5177135A · kind A · utility

Assignee

• Ciba-Geigy · US

Inventors

• Wolfgang Wehner · Ober-Ramstadt, DE
• Hermann O. Wirth · Bensheim, DE

Key dates

• Filing date: Dec 3, 1990
• Grant date: Jan 5, 1993
• Expiry date: Dec 3, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/372
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A composition comprising PA0 a) a chlorinated polymer, PA0 b) at least one Me(II) carboxylate and/or Me(II) phenolate and/or Me(II) alkylphenolate, wherein Me(II) is Ba, Ca, Mg, Cd, Sr or Zn, and PA0 c) at least one compound of formula (I) ##STR1## wherein n is 1, 2, 3, 4 or 6 and, when n=1, R is phenyl and X is an alkyl group of 10 to 20 carbon atoms, when n=2, R is alkyl of 1 to 4 carbon atoms or phenyl, and X is alkylene of 4 to 12 carbon atoms, alkylene of 2 to 12 carbon atoms which is substituted by at least one C.sub.1 -C.sub.8 alkyl group, or is --CH.sub.2 --CH.sub.2 --S--CH.sub.2 --CH.sub.2 --S--CH.sub.2 --CH.sub.2 -- or --CH.sub.2 --CH.sub.2 --S--CH.sub.2 --CH.sub.2 --, when n=3, R is alkyl of 1 to 4 carbon atoms of phenyl and X is CH.sub.3 CH.sub.2 C(CH.sub.2 --).sub.3, when n=4, R is alkyl of 1 to 4 carbon atoms or phenyl and X is a group ##STR2## wherein m is 0 or 1, and, when n=6, R is alkyl of 1 to 4 carbon atoms or phenyl and X is the group ##STR3##