.beta.-keto esters as stabilizers for chlorinated polymers
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United States of America Patent
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Jan 5, 1993
Grant Date -
N/A
app pub date -
Dec 3, 1990
filing date -
Dec 11, 1989
priority date (Note) -
Expired
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Abstract
A composition comprising a) a chlorinated polymer, 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 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##
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