申请人:Kaneka Corporation
公开号:EP3305844A1
公开(公告)日:2018-04-11
The present invention relates to a vinyl chloride resin composition containing 100 parts by weight of a vinyl chloride resin (A) and 0.1 to 20 parts by weight of a processing aid (B), wherein the processing aid (B) contains 50 to 95 % by weight of a first polymer (b1) and 5 to 50 % by weight of a second polymer (b2), the processing aid (B) has a weight average molecular weight of 100,000 to 4,000,000, the first polymer (b1) of the processing aid (B) has Tg of 5 to 110 °C, the first polymer (b1) of the processing aid (B) is polymerized with 12 to 28 % by weight of a vinyl cyanide compound, 32 to 88 % by weight of an aromatic vinyl compound, 0 to 40 % by weight of an alkyl acrylate, and 0 to 30 % by weight of other vinyl compound copolymerizable with the vinyl cyanide compound, the aromatic vinyl compound, and the alkyl acrylate, per 100 % by weight of the first polymer (b1), the second polymer (b2) of the processing aid (B) has Tg of -40 to 50 °C, and the first polymer (b1) has Tg of 40 °C or higher than that of the second polymer (b2) .
本发明涉及一种氯乙烯树脂组合物,按重量计含有 100 份氯乙烯树脂 (A) 和 0.1至20份(重量)的加工助剂(B),其中加工助剂(B)含有50至95%(重量)的第一聚合物(b1)和5至50%(重量)的第二聚合物(b2),加工助剂(B)的重量平均分子量为100,000至4,000,000,加工助剂(B)的第一聚合物(b1)的Tg为5至110℃,加工助剂(B)的第一聚合物(b1)与12至28%(重量)的乙烯基氰化合物聚合、加工助剂(B)的第二种聚合物(b2)的 Tg 为 -40 至 50 °C,第一种聚合物(b1)的 Tg 为 40 °C或高于第二种聚合物(b2)的 Tg。