A HYDROTALCITE-BASED COMPOSITE HEAT STABILIZER FOR CHLORINE-CONTAINING HIGH POLYMER

摘要

The present invention relates to a hydrotalcite-based composite heat stabilizer for chlorine-containing high polymer which is made up of hydrotalcite, calcium soap and zinc soap according to a certain proportion. The main ingredient of the composite heat stabilizer is [Mg<2+>1-xA1<3+>X(OH)2]CO3<2->X/2 . mH2O (0.2<=x<=0.33; 0<=m<=2). The composite heat stabilizer has better heat stabilitz for PVC and other chlorine-containing higher polymer, is toxicless, pollution-free, low cost, abundant raw material and so on.