China Petroleum & Chemical Corporation

Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation

Xiudong Xu

Ying Wang

Weiwei Song

Zhong Tan

Qilong Zhou

Jinhua Yu

Fengkui Li

Shanshan Yin

Rui Zhang

Li'an Yan

Yu Tian

Lunjia Xie

Zhufang Sun

Siyuan Zhao

Zaixing Feng

Chunhong Ren

A catalyst component for olefin polymerization includes magnesium, titanium, a halogen, an internal electron donor compound, and a precipitation aid. The precipitation aid includes a precipitation aid represented by general formula (I). The precipitation aid represented by general formula (I) includes isomers represented by general formula (I-a) and/or (I-b).

Catalyst component for olefin polymerization, preparation method thereof, and catalyst including same

The magnesium alkoxide particle contains the reaction product of the following components: 1) a magnesium powder; 2) a mixed alcohol; 3) a halogenating agent; and 4) a titanate compound. The magnesium alkoxide particle is used for preparing a catalyst for olefin polymerization.

Magnesium alkoxide particle and application thereof

A catalyst component (A) for olefin polymerization is prepared by contacting a solid component (a) containing magnesium, titanium, halogen and an internal electron donor compound with an organosilicon compound (b), wherein the organosilicon compound (b) is one or more selected from a Si&#x2014;H functional group containing chainlike polysiloxane (b1) represented by formula (I), a cyclic polysiloxane (b2) represented by formula (I) and a Si&#x2014;H functional group containing organosilicon compound (b3) represented by formula (I). In addition, a process for preparing the catalyst component and the corresponding catalyst is described. The catalyst component and its catalyst have high catalytic activity, good hydrogen response, and good stereospecificity, the catalyst can release its activity more evenly, and the obtained polymer has significantly increased bulk density. The definitions of Rto R, n and z in the formulae (I), (l) and (I) are as described in the specification. 

Catalyst component for olefin polymerization, preparation method therefor and catalyst thereof

Disclosed is a solid catalyst component for olefin polymerization. The catalyst component comprises a dialkoxy magnesium carrier, a titanium compound, and a product from an internal electron donor reacting in an inert solvent. The internal electron donor compound comprises a 2,3-di-non-linear-alkyl-2-cyano succinic acid diester compound as presented in formula I.

Solid catalyst component and catalyst for olefin polymerization

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Xiudong Xu