摘要 |
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. |
申请人 |
CHINA PETROLEUM & CHEMICAL CORPORATION;BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION |
发明人 |
LI, WEILI;XIA, XIANZHI;LIU, YUEXIANG;LING, YONGTAI;ZHAO, JIN;ZHANG, JIGUI;GAO, FUTANG;GAO, PING;TAN, YANG;PENG, RENQI;ZHANG, ZHIHUI;LIN, JIE;DUAN, RUILIN;MA, CHANGYOU |