Sulfide containing tin stabilizers

DETAILED DESCRIPTION What is claimed is: 1.
A monoorganotin or diorganotin mercaptoalkyl ester of a carboxylic acid or mercapto hydroxyalkyl ester of a carboxylic acid mono or poly sulfide useful as a stabilizer for improving the resistance to deterioration of vinyl chloride polymers when heated at 350.
degree.
F, containing at least one tin atc having one to two hydrocarbyl groups having from 1 to 20 carbon atoms and selected from the group consisting of alkyl, aryl, cycloalkyl, aralkyl and alkenyl and linked to the tin through carbon, at least one mercaptoalkyl ester of a carboxylic acid group linked to tin through the sulfur of the mercaptoalkyl group and at least one mono or polysulfide sulfur group bonded exclusively to tin, the organotin compound having an amount of tin within the range from 10 to 42% by weight and an amount of sulfur within the range from 8 to 42% by weight.
2.
An organotin compound according to claim 1, having the formula: ##STR24## wherein R is alkyl, aryl, cycloalkyl, aralkyl or alkenyl of 1 to 20 carbon atms, R.
sub.
19 is R or ##STR25## where Z is a polyvalent alkylene or hydroxy-alkylene radical of at least 2 carbon atoms, the valency of Z being m + 1 R.
sub.
10 is hydrogen, hydrocarbyl of 1 to 19 carbon atoms wherein the hydrocarbyl is alkyl, aryl, aralkyl, cycloalkyl, aralkenyl or alkenyl having up to 3 ethylene double bonds, hydroxyalkyl of up to 19 carbon atoms, hydroxyalkenyl of up to 19 carbon atoms, m is an integer of 1 to 3, n is an integer from 1 to 2 and x is 1 to 10.
3.
An organotin compound according to Claim 1 (A) having the formula: ##STR26## where x is a number from 1 to 10, R.
sub.
1, R.
sub.
2, R.
sub.
3, R.
sub.
4, R.
sub.
5 and R.
sub.
9 are alkyl, aryl, cycloalkyl, aralkyl or alkenyl of 1 to 20 carbon atoms, ##STR27## atomic weight 35 to 127, R.
sub.
6 and R.
sub.
16 are hydrogen, hydroxyl, ##STR28## alkyl of 1 to 18 carbon atoms, R.
sub.
7 and R.
sub.
15 are hydrogen or alkyl of 1 to 18 carbon atoms, y is at least 1, z is 0 or an integer and the total carbon atoms in ##STR29## is 2 to 20, R