China Petroleum & Chemical Corporation

Arthrosi Therapeutics, Inc.

Beijing Reasearch Institute of Chemical Industry

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

Ruiping Wang

Wei Chen

Yuexiang Liu

Zifang Guo

Junling Zhou

Hongtao Wang

Shunqi Yan

Hongxu Yang

Ruixia Li

Litain Yeh

Zheng Jane Li

Jingmei Zhang

Xiaojing Cheng

Described herein are crystalline forms of (3,5-dibromo-4-hydroxyphenyl)(2-(1-hydroxyethyl)benzofuran-3-yl-4,5,6,7-d)methanone, and solvates thereof.

Crystalline forms of a compound for treating or preventing gout or hyperuricemia

The present invention provides a catalyst component for ethylene polymerization, a process for preparing the same, a catalyst comprising the same, and a process for polymerizing ethylene using the catalyst. The catalyst component comprises a reaction product, supported on an inorganic oxide support, of a magnesium complex, a titanium compound, an alcohol compound, and an organoaluminum compound, wherein said magnesium complex is formed by dissolving a magnesium halide in a solvent system comprising an organic epoxy compound and an organo phosphorus compound. The catalyst according to the invention is especially suitable for slurry phase polymerization of ethylene. The catalyst according to the present invention has high catalytic activity, and a good hydrogen response, with the resultant polymer having a more uniform particle size diameter and a narrow particle size distribution.

Catalyst component for ethylene polymerization, the preparation thereof and catalyst comprising the same

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Beijing, China

Ruiping Wang