Organic antimony containing stabilizer compositions for halogenated polymers

A composition comprising:

• A. At least one organic antimony compound containing at least one antimony to sulfur to carbon linkage and being selected from compounds having the formulas:
• ##STR126## wherein R is selected from the group consisting of alkyl, aryl, cycloalkyl, cycloalkenyl, aralkyl, alkaryl, and alkenyl;
• R.sup.1 is selected from the group consisting of alkyl, aryl, cycloalkyl, cycloalkenyl, aralkyl, alkaryl, alkenyl, ##STR127## R.sup.2 is hydrogen, alkyl, aryl, alkenyl, cycloalkyl or alkoxyalkyl;
• R.sup.3 is alkyl, aryl, cycloalkyl or alkenyl;
• Y is selected from the group consisting of ##STR128## R.sup.4 is alkylene, arylene, or alkenylene;
• R.sup.5 is a trivalent alkyl or aryl radical;
• R.sup.6 is a tetravelent alkyl or aryl radical;
• D is oxygen or sulfur;
• i=1, 2 or 3;
• j=1 or 2;
• m=1 or 2 and m'=0 or 1;
• n=1 or 2 and n'=0 or 1;
• x is 0 or 1 with the proviso that when x=0 then m+m'=2 and n+n'=2, and when x=1 then m=1, m'=0, n=1 and n'=0;
• z is 1, 2 or 3;
• a is 2, 3 or 4;
• q is 1, 2 or 3;
• and
• p is 2, 3 or 4;
• B. elemental sulfur in an amount from about 0.03% to about 3.0% by weight based on the weight of the organic antimony compound;
• and
• C. in an amount from about 0.5% to about 25% by weight based on the weight of the organic antimony compound of at least one 2-mercaptocarboxylic acid selected from compounds having the formula:
• ##STR129## where R.sup.9 and R.sup.10 are the same or different and are selected from hydrogen, alkyl, aryl, aralkyl, alkaryl, cycloalkyl, alkenyl, carboxyl, ##STR130## where R.sup.8 is hydrogen, alkyl, aryl, aralkyl, alkaryl, cycloalkyl, cycloalkenyl, or alkenyl;
• R.sup.11 is hydrogen, alkyl or aryl;
• d is 1 to 6 and e is 1 to 10;
• or R.sup.9 and R.sup.10 together form an alicyclic ring.