申请人:——
公开号:US20040152821A1
公开(公告)日:2004-08-05
A vinyl chloride resin composition which provides, with a small load on the molding machine, a product excellent in impact resistance, gelation properties and heat stability, and in addition, having superior appearance and dimensional stability is provided. In particular, a core-shell polymer composition for modifying vinyl chloride resin, which provides the vinyl chloride resin composition, is provided. The core-shell polymer composition for vinyl chloride resin composition comprises (A) 85 to 99.5 % by weight of a core-shell polymer containing a rubbery polymer and (B) 15 to 0.5 % by weight an acid or anionic surfactant, and the core-shell polymer composition has a specific viscosity (&eegr;
sp
) of at least 0.1 when measured at 30° C. by using a 0.2 g/100 ml acetone solution of a portion soluble in methyl ethyl ketone and insoluble in methanol of said core-shell polymer composition.
本发明提供了一种氯乙烯树脂组合物,该组合物可在成型机上以较小的负荷提供抗冲击性、凝胶化性能和热稳定性优异的产品,此外还具有出色的外观和尺寸稳定性。特别是提供了一种用于改性氯乙烯树脂的芯壳聚合物组合物,它提供了氯乙烯树脂组合物。用于氯乙烯树脂组合物的芯壳聚合物组合物包括:(A) 85% 至 99.5% (重量百分比)含有橡胶聚合物的芯壳聚合物;(B) 15% 至 0.5% (重量百分比)酸性或阴离子表面活性剂,芯壳聚合物组合物具有比粘度(&eegr;
sp
用 0.2 克/100 毫升丙酮溶液溶解所述芯壳聚合物组合物中可溶于甲乙酮而不溶于甲醇的部分,在 30 摄氏度时测得的比粘度(&eegr; sp)至少为 0.1。