China Petroleum & Chemical Corporation

Beijing Research Institute of Chemical Industry

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

Hongbin Du

Wei Chen

Lei Guo

Xiaodong Wang

Qi Chen

Zhichao Yang

Yuexiang Liu

Xianzhi Xia

Zifang Guo

Wenbo Song

Yang Tan

Ping Gao

Tianyi Li

Lunjia Xie

Tianyi Zhang

Zhong Tan

Siyuan Zhao

Zhiwu Wang

Chen Wei

Xinsheng Wang

Zhaowen Ma

Maoping Yin

Yuanyi Yang

Yisen Wang

Qingshan Ma

Zhibiao Hu

Zhenhu Li

Jiyu Li

Weimin Ji

Lixin Yan

Tongxuan Zhang

Xuan Zheng

Kai Zhang

Luqing Yu

The present invention discloses cyclopentane carboxylate compounds. The 1-hydrocarbyl-2-acyloxy-cyclopentane carboxylates according to the invention have a general formula (I): wherein groups R, Rand R, which are identical or different, are independently selected from the group consisting of linear or branched C-Calkyl, C-Ccycloalkyl, C-Caryl, C-Calkaryl and C-Caralkyl. The present invention also discloses a process as well as intermediate compounds for preparing the compounds of formula (I), and use of the compounds (I) as electron donor in the preparation of catalysts for propylene polymerization.

Cyclopentane carboxylate compounds, process and intermediates for preparing the same and use thereof

The present invention provides a process for preparing particles of magnesium halide/alcohol adduct, said process comprising: preparing a melt of magnesium halide/alcohol adduct in an inert liquid medium, dispersing the mixture of the inert liquid medium and the melt of the magnesium halide/alcohol adduct by high-speed rotation under a high-gravity field to obtain a dispersion of magnesium halide/alcohol adduct melt; and the cooling the dispersion of the melt to form the particles of magnesium halide/alcohol adduct. The present invention further relates to the particles of magnesium halide/alcohol adduct prepared by the process of the present invention and the use thereof in the preparation of catalysts for olefin polymerization.

Magnesium halide/alcohol adduct, its preparation and use

The present invention relates to a catalyst component and a catalyst for olefin polymerization. The catalyst component utilizes magnesium halide and silica as composite support, and the particle morphology thereof can be improved by regulating the ratio of magnesium halide to silica. Further, the purpose of stabilizing the rate of catalytic polymerization reaction and improving the particle morphology of polymer so as to meet the requirements on catalyst performance of various polymerization processes can be achieved through the combination of the supports of the catalyst. In the meantime, when used in the polymerization of propylene, the catalyst of the present invention exhibits a relatively high polymerization activity and high stereospecificity.

Catalyst component and catalyst for olefin polymerization as well as use thereof

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Beijing, China

Hongbin Du