A plastisol which comprises:
(a) a core-shell polymer which comprises a core layer polymerized mainly from an aromatic vinyl monomer, and a shell layer polymerized from a monomer mixture comprising 50-95% by weight of methyl methacrylate as a first monomer, 5-50% by weight of at least one of an α, β-ethylenically unsaturated carboxylic acid and a hydroxyalkyl ester of α, β-ethylenically unsaturated carboxylic acid as a second monomer, and 0-30% by weight of a third monomer copolymerizable with the first and second monomer, the shell layer being contained in an amount of 5-80% by weight based on the core-shell polymer and having a weight average particle size of 0.1-20 microns; and
(b) a plasticizer as an aromatic compound having at least two independent aromatic rings in the molecule in which the core-shell polymer is dispersed.
塑溶胶包括
(a) 芯壳聚合物,包括主要由芳香族
乙烯基单体聚合而成的芯层和由单体混合物聚合而成的壳层,单体混合物包括 50-95%(重量百分比)的
甲基丙烯酸甲酯作为第一单体,5-50%(重量百分比)的α、β-
乙烯基不饱和
羧酸和α的羟基烷基酯中的至少一种单体作为第二单体,以及 0-30%(重量百分比)的可与第一单体和第二单体共聚的第三单体、β-
乙烯基不饱和
羧酸的羟基烷基酯作为第二单体,以及 0-30%(重量比)可与第一和第二单体共聚的第三单体,壳层的含量为芯壳聚合物的 5-80%(重量比),其重量平均粒径为 0.1-20 微米;以及
(b) 作为
增塑剂的芳香族化合物,其分子中至少有两个独立的芳香环,芯壳聚合物分散在其中。