申请人:CHINA PETROCHEMICAL CORPORATION
公开号:EP1260523A1
公开(公告)日:2002-11-27
The present invention relates to a catalyst system for the (co)polymerization of propylene consisting of the following components:(A) a solid catalyst component comprising titanium, magnesium, halogen and a 1,3-diether; (B) an organic aluminum compound; and optionally (C) an organic silicon compound. In comparison with the prior art, stereospecificity of the polymer prepared by using the catalyst system of this invention even1 containing no external electron-donor is greater than 99%. Also, the activity of the catalyst system and hydrogen gas adjustability on the molecular weight of the polymer do not significantly decrease.
本发明涉及一种用于丙烯(共)聚合的催化剂体系,该催化剂体系由以下组分组成:(A) 由钛、镁、卤素和 1,3-二醚组成的固体催化剂组分;(B) 有机铝化合物;以及 (C) 有机硅化合物。与现有技术相比,使用本发明催化剂体系制备的聚合物,即使1 不含外部电子供体,其立体特异性也大于 99%。此外,催化剂体系的活性和氢气对聚合物分子量的可调节性也没有明显降低。