| 摘要 |
A stabilizer composition for polyvinyl polymers contains (A) AN ORGANOTIN COMPOUND HAVING THE FORMULA: <IMAGE> WHEREIN M + N = 4 AND M IS EITHER 1 OR 2, R1, R2, R3 and R4 are each independently a hydrogen atom, or an alkyl or substituted alkyl group having 1 to 18 carbon atoms with the proviso that at least one of R1 and R2 contains adjacent to the group HC- a carbonyl group which forms a part of an acid group, ester group, acid halide group, ketone group or aldehyde group; X is a -S (CH2)y-COOR5 or -S (CH2)y-OCOR5 wherein y is 1 or 2, or a -SR5, -OCOR5 or -OCOCH=CHCOOR5, R5 having 1 to 18 carbon atoms; and (B) AN ORGANOTIN SULFIDE HAVING THE FORMULA (R Sn S1.5)n or R2Sn S, wherein n is 2 to 10 and R is an alkyl group having 1 to 18 carbon atoms or the group: <IMAGE> wherein R1, R2, R3 and R4 are as above defined under (a).
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