Antimony (V) mercaptides as processing stabilizers for vinyl halide resins and method of manufacturing same

A vinyl halide resin composition comprising a pentavalent antimony mercaptide having the formula:

• ##STR5## wherein K is 1 to 4;
• M is 1 to 4;
• N is 0 to 4;
• R is primary alkyl, alkenyl, alkynyl having from 1 to 18 carbon atoms and combinations thereof.

A method of preparing a pentavalent antimony mercaptide of the formula:

• ##STR6## wherein K is 1 to 4;
• M is 1 to 4;
• N is 0 to 4;
• R is a primary alkyl, alkenyl, alkynyl having from 1 to 18 carbon atoms and combinations thereof, which comprises the steps of
• (a) mixing sodium antimonate and a mercaptan having the formula:
• ##STR7## (b) adding a non-oxidizing mineral acid;
• and (c) heating the mixture to a temperature of from about 50.degree. C. to 150.degree. C. for a time of from about 1 to about 10 hours.

A method of preparing a pentavalent antimony mercaptide of the formula:

• Sb{SCH.sub.2 R}.sub.5
• wherein R is primary alkyl, alkenyl, alkynyl having from 1 to 18 carbon atoms and combinations thereof, which comprises the steps of
• (a) mixing sodium antimonate and a mercaptan having the formula:
• HSCH.sub.2 R;
• (b) adding a non-oxidizing mineral acid;
• and
• (c) heating the mixture to a temperature of from about 50.degree. C. to 150.degree. C. for a time of from about 1 to about 10 hours.