Stabilizer composition comprising a thio-1,3-dicarbonyl compound and a heat stabilizer, and vinyl halide polymer composition stabilized therewith
申请人:S.A. Diamond Shamrock Benelux N.V.
公开号:EP0028268A1
公开(公告)日:1981-05-13
A stabilizer composition is disclosed for increasing the resistance to yellowing and loss of clarity of a vinyl halidepolymer upon heating, which comprises a thio-1,3-dicarbonyl compound represented by the formula
in which M represents hydrogen, an organotin group or a metal, R represents hydrogen, a hydrocarbon group or a group-C-R'", each of R,R", and R'" represents hydrogen x or an organic group, X is oxygen or sulfur, and n representing thevalence of M is an integer from 1 to 4. and at least one heat stabilizer which is an alkyltin compound or a metal salt of a non-nitrogenous monocarboxylic acid or of a hydrocarbon-substituted phenol.
Stablized vinyl halide polymer compositions, in which the above stabilizer composition is used to improve the resistance to yellowing and the clarity, are also disclosed.
本发明公开了一种稳定剂组合物,用于提高卤化乙烯基聚合物在加热时的耐黄变性和透明度,该稳定剂组合物由硫代-1,3-二羰基化合物组成,其式如下
其中 M 代表氢、有机锡基或金属,R 代表氢、烃基或基团-C-R'",R、R "和 R'"各自代表氢 x 或有机基团,X 是氧或硫,代表 M 的价数的 n 是 1 至 4 的整数。
本发明还公开了稳定的卤化乙烯聚合物组合物,其中上述稳定剂组合物用于提高抗黄变性和透明度。