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US 4,358,555 AGranted
Stabilizers for halogen containing polymers comprising alkyltin compounds, zinc mercaptoesters and basic alkali or alkaline earth metal compounds
AssigneeCarstab Corporation
InventorKenneth R. Molt
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Abstract
Compositions which are useful as stabilizers for halogen containing polymers are provided comprising (1) at least one alkyltin mercaptide, (2) at least one zinc mercaptoester, and (3) at least one basic alkali or alkaline earth metal compound. Also provided are polymer compositions containing these stabilizers.
Claims10
A composition for stabilizing halogen containing polymers comprising:
- A. at least one alkyltin mercaptide having the formula:
- ##STR22## where R.sup.1 is C.sub.1 to C.sub.12 straight or branched chain alkyl;
- R is C.sub.1 to C.sub.20 straight or branched chain, saturated or unsaturated alkyl;
- a=1 or 2;
- and
- x=1 or 2;
- B. at least one zinc mercaptoester having the formula:
- ##STR23## where x and R are as previously defined;
- and C. at least one basic alkali or alkaline earth metal compound selected from the group consisting of oxides, hydroxides, sulfides, silicates, phosphates, borates and carbonates of alkali or alkaline earth metals.
6 more elements
Dependencies are inferred from the claim text.