Chlorine-containing polymer-body stabilizers and chlorine-containing polymer composition

摘要

PROBLEM TO BE SOLVED: To obtain a lead-free stabilizer with improved thermal stability and low temperature heat aging resistance for a chlorine-containing polymer and to obtain a lead-free chlorine-containing polymer composition excellent in thermal stability and low temperature heat aging resistance and useful as a wire- covering material. ;SOLUTION: There are provided a stabilizer for a chlorine-containing polymer and a resin composition containing the same, the stabilizer comprising(A) a fine crystalline calcium silicate having a chemical composition represented by the formula: CaO.xSiO₂.nH₂O (wherein (x) is a number not less than 0.5 and (n) is a number not more than 2.5) and X-ray diffraction patterns including spacings at 3.01-3.08 Å, 2.78-2.82 Å and 1.81-1.84 Å, or its complex with a polyhydric alcohol and (B) a cyanurate compound, the components (A) and (B) being contained in a wt. ratio of (A) to (B) of 5.0:95.0 to 99.8:0.2.;COPYRIGHT: (C)1999,JPO