Methoxy carboxylic acid esters and use as ultraviolet stabilizer

Details Methoxy carboxylic acid esters and use as ultraviolet stabilizer Methoxy carboxylic acid esters and use as ultraviolet stabilizer

1974-01-09

1982-08-03

Killos, Paul J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

2604105, 560 73, 564170, 564176, 549362, 549417, 549418, 549436, C07C 6976

Patent

active

043428754

ABSTRACT:
Compounds of the formula ##STR1## are prepared and are used as ultraviolet light and weathering stabilizers for polymers, preferably polypropylene. In the formula R is alkoxyphenyl, dialkoxyphenyl or alkylene dioxyphenyl, the alkoxy groups have 1 to 8 carbon atoms and the alkylene group has 1 to 4 carbon atoms, q is 1 to 6, and Z is ##STR2## where R' is H or a 1 to 4 carbon alkyl, R.sup.7 is hydrogen or ##STR3## where R.sup.8 is hydrocarbyl, m is 1 to 4, n is 0 or 1 and m+n is 1 to 4; ##STR4## where R.sup.12 is lower alkyl and G is H or ##STR5## and where at least one of the n's is zero. ##STR6## where s is 1 to 3 and t is from 0 to 2, the total of s and t being not over 3; ##STR7## where u is 2 to 4; ##STR8## where v and w are each 1 to 4 and p is 2 to 4; ##STR9## where R" and R"' are 1 to 8 carbon atom alkyl or where R.sup.11 and R.sup.111 together with the oxygen atoms attached thereto and the adjacent carbon atoms of the benzene ring form a 5 or 6 membered heterocyclic ring and R.sup.IV is 1 to 4 carbon atom alkylene; ##STR10## where x is 2 to 3; (j) alkloxy of 1 to 18 carbon atoms;

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