Petrochina Company Limited

Weihuan Huang

Li Wang

Liang Cui

Jianjun Yi

Huashu Li

Zhifei Li

Chunming Cui

Baozuo Yin

Jianying Zhang

A catalyst for homopolymerizing and copolymerizing propylene and its preparation and use. The catalyst component includes titanium compound containing at least one Ti-halogen bond and at least two kinds of electron donor compounds A and B supported on MgCl.nROH adduct, wherein the electron donor compound A is a compound of formula (I), the electron donor compound B is ester or ether compound; the molar ratio between compound A and compound B is 0.1-5; the molar ratio between the total amounts of the two kinds of electron donors and MgCl.nROH is 0.01-1, based on the amount of MgCl.nROH; and the molar ration between the titanium compound containing Ti-halogen bond and MgCl.nROH is 1-200. The catalyst has high activity, high stereospecificity and good copolymerization performance. In addition, the morphology of the polymer obtained therefrom is good. 

Catalyst for homopolymerizing and copolymerizing propylene and its preparation and use

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Beijing, China

Weihuan Huang