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:
Feb. 19, 2008
Filed:
Sep. 16, 2004
Chen Wei, Beijing, CN;
Yuexiang Liu, Beijing, CN;
Xianzhi Xia, Beijing, CN;
Wenbo Song, Beijing, CN;
Hongbin Du, Beijing, CN;
Zifang Guo, Beijing, CN;
Yang Tan, Beijing, CN;
Zhaowen MA, Beijing, CN;
Weimin Ji, Beijing, CN;
Zhichao Yang, Beijing, CN;
Xiaodong Wang, Beijing, CN;
Lei Guo, Beijing, CN;
Chen Wei, Beijing, CN;
Yuexiang Liu, Beijing, CN;
Xianzhi Xia, Beijing, CN;
Wenbo Song, Beijing, CN;
Hongbin Du, Beijing, CN;
Zifang Guo, Beijing, CN;
Yang Tan, Beijing, CN;
Zhaowen Ma, Beijing, CN;
Weimin Ji, Beijing, CN;
Zhichao Yang, Beijing, CN;
Xiaodong Wang, Beijing, CN;
Lei Guo, Beijing, CN;
Abstract
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.