BETA-DIKETONE AND HYDROTALCITE STABILIZER COMPOSITIONS FOR HALOGEN-CONTAINING POLYMERS AND POLYMER COMPOSITIONS CONTAINING THE SAME

摘要

Stabilizer compositions for halogen-containing polymers are provided composed of a beta -diketone as well as metal and organotin enolate salts thereof; and a hydrotalcite having the general formula: Mg1-xAlx(OH)2Ax/2.mH2O wherein x is a number from 0 to 0.5; A is CO3= or SO4=, and m is a number representing the number of H2O in the molecule. The stabilizer compositions are effective in enhancing the resistance to deterioration by heat and light of halogen-containing polymers and especially polyvinyl halide resins. The beta -diketone and hydrotalcite in these compositions exhibit a synergistic stabilizing effectiveness superior to either alone in like amount.