China Petroleum Chemical Corporation

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

Chunhong Ren

Ying Wang

Tao Liu

Long Chen

Jin Zhao

Yuexiang Liu

Xianzhi Xia

Weili Li

Yang Tan

Zhong Tan

Yongtai Ling

Futang Gao

Shanshan Yin

Fengkui Li

Jinhua Yu

Qilong Zhou

Xiudong Xu

Li'an Yan

A carrier for an olefin polymerization catalyst contains a magnesium-containing compound and sulfur. The sulfur is at least one of an elemental sulfur, a complex sulfur, and a compound sulfur. The carrier has good particle morphology and a smooth surface, and has a narrow particle size distribution. The catalyst prepared from the carrier has high activity and good sensitivity to hydrogen regulation, and can improve the density of a polymer stack when being used for olefin polymerization.

Carrier for olefin polymerization catalyst, and preparation method therefor and application thereof

Disclosed are a catalyst component and a catalyst for olefin polymerization, and an olefin polymerization method. The catalyst component comprises magnesium, titanium, a halogen and an internal electron donor, wherein the internal electron donor comprises a monocarboxylic acid ester compound and a diether compound, and the molar ratio of the monocarboxylic acid ester compound to the diether compound is (0.0035-0.7):1. By using the catalyst, a polymer having both a high isotactic index and a high melt flow index can be prepared.

Catalyst component and catalyst for olefin polymerization, and application thereof

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Beijing, China

Chunhong Ren