Petrochina Company Limited

Jing Mao

Jing Wang

Shuo Wang

Yuan Yuan

Jianjun Yi

Hongming Li

Tianxu Sun

Qigu Huang

Mingge Zhang

Runcong Zhang

Yanpei Nie

Lin Men

Dianjun Li

The present invention relates to an olefin coordination polymerization catalyst and a preparation method and application thereof. The olefin polymerization catalyst consists of a primary catalyst mainly prepared from a magnesium compound, a transition metal halide, a C-Calcohol and an electron donor in a molar ratio of 1:1-40:0.01-10:0.001-10, and a co-catalyst which is an organoaluminum compound; and the molar ratio of the transition metal halide to the co-catalyst is 1:10-500. The catalyst of the present invention has a good particle morphology, and a spherical shape, and the catalyst particles do not stick to the vessel wall; the catalyst has high activity and excellent hydrogen regulation performance, and the melt index MFR of polyethylene may be adjusted within 0.01 g/10 min-550 g/10 min; and the catalyst is applicable in slurry polymerization process, loop reactor polymerization process, gas phase polymerization process or combined polymerization process.

Olefin coordination polymerization catalyst, and preparation method and application thereof

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Beijing, China

Jing Mao