Duane Morris LLP
Spherical carriers for olefin polymerization catalyst, catalyst components, catalyst, and preparation methods therefor
Spherical carriers for an olefin polymerization catalyst, catalyst components, catalysts, and preparation methods therefor are disclosed. The method for preparing the spherical carriers comprises the following steps: (1) reacting, in the presence of at least one polymeric dispersion stabilizer, a magnesium halide with an organic compound containing active hydrogen to form a complex solution; (2) reacting said complex solution with an alkylene oxide-type compound to directly precipitate solid particles; and (3) recovering the solid particles to obtain spherical carriers. When a catalyst prepared by using the present spherical carrier is used in propylene polymerization, said catalyst exhibits high polymerization activity and high stereo-directing ability.
BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION CHINA PETROLEUM & CHEMICAL CORPORATION
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inventional additional additional inventional
Zhihui Yongtai Changyou Ping Yang Jie Ruilin Weili Jigui Renqi Xianzhi Yuexiang Jin Futang
Zhang Ling Ma Gao Tan Lin Duan Li Zhang Peng Xia Liu Zhao Gao