US Patent 7842743 Stabiliser composition for halide-containing polymers

A composition for stabilising halide-containing polymers, said composition comprising compounds represented by the general formula (I) wherein X, Y, and Z are each independently selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, amino, and groups having the structure (II) wherein R1 and R2 are each independently selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, phenyl, phenylalkyl and aryl group, A is oxygen (O) or sulfur (S); and wherein the dashed double line represents an optional double bond.