| abstract |
Synergistic stabilizer compositions are employed to stabilize halogen-containing vinyl polymers from, for example, degradation and discoloration. The stabilizer compositions comprise a dihydropyridine or polydihydropyridine, and at least one of an aminoalcohol of formula (3) n n n wherein Y is a substituted or unsubstituted C 1 -C 36 alkyl, aryl, alkaryl, or aralkyl group, R 1 and R 2 are each independently hydrogen or a substituted or unsubstituted C 1 -C 36 alkyl, aryl alkaryl, or aralkyl group, with the proviso that Y, R 1 , and R 2 are substituted so as to provide the aminoalcohol with two or more hydroxy groups; or a perchlorate salt. |