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公开(公告)号:US06683017B2
公开(公告)日:2004-01-27
申请号:US09732045
申请日:2000-12-06
申请人: Mingzhi Gao , Jian Zhou , Yun Zhao , Zhulan Li , Yantoo Yang , Juxiu Yang , Weihua Feng
发明人: Mingzhi Gao , Jian Zhou , Yun Zhao , Zhulan Li , Yantoo Yang , Juxiu Yang , Weihua Feng
IPC分类号: B01J3100
摘要: A catalyst system for the (co)polymerization of propylene contains (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 evenl 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.
摘要翻译: 用于丙烯(共)聚合的催化剂体系包含(A)包含钛,镁,卤素和1,3-二醚的固体催化剂组分; (B)有机铝化合物; 和(C)有机硅化合物。 与现有技术相比,通过使用本发明的催化剂体系制备的聚合物的立体定向性不含外电子给体的偶联剂大于99%。 此外,催化剂体系的活性和氢气可调整性对聚合物的分子量没有显着降低。