Patent ID: 7902271

Claim:
A compostable vinyl halide polymer composition comprising a vinyl halide polymer, and a prodegradant system comprising (a) a monomeric adduct of an organotitanate or organozirconate and (b) an organotin compound, said prodegradant system in relative amounts to render the vinyl halide polymer composition compostable, wherein said adduct is defined by the formula: organotitanate or zirconate —P═O(OH) salt-forming group —R—C═C-activating group, where R is a hydrocarbon radical or substituted hydrocarbon radical and the activating group has a C═O, —CN, oxygen, nitrogen, sulfur, or an aromatic ring conjugated with the C═C to activate the carbon-carbon double bond, wherein the substituent of the substituted hydrocarbon radical is selected from the group consisting of an ether, thioether, ester, thioester, and amide.