The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 24, 2018
Filed:
Oct. 17, 2014
China Petroleum & Chemical Corporation, Beijing, CN;
Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation, Beijing, CN;
Weili Li, Beijing, CN;
Xianzhi Xia, Beijing, CN;
Yuexiang Liu, Beijing, CN;
Yongtai Ling, Beijing, CN;
Jin Zhao, Beijing, CN;
Jigui Zhang, Beijing, CN;
Futang Gao, Beijing, CN;
Ping Gao, Beijing, CN;
Yang Tan, Beijing, CN;
Renqi Peng, Beijing, CN;
Zhihui Zhang, Beijing, CN;
Jie Lin, Beijing, CN;
Ruilin Duan, Beijing, CN;
Changyou Ma, Beijing, CN;
Abstract
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.