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:
May. 31, 2016
Filed:
Apr. 19, 2010
Xianzhi Xia, Beijing, CN;
Jin Zhao, Beijing, CN;
Yuexiang Liu, Beijing, CN;
Jigui Zhang, Beijing, CN;
Weili LI, Beijing, CN;
Yang Tan, Beijing, CN;
Suzhen Qiao, Beijing, CN;
Renqi Peng, Beijing, CN;
Ping Gao, Beijing, CN;
Maoping Yin, Beijing, CN;
Tianyi Zhang, Beijing, CN;
Xianzhi Xia, Beijing, CN;
Jin Zhao, Beijing, CN;
Yuexiang Liu, Beijing, CN;
Jigui Zhang, Beijing, CN;
Weili Li, Beijing, CN;
Yang Tan, Beijing, CN;
Suzhen Qiao, Beijing, CN;
Renqi Peng, Beijing, CN;
Ping Gao, Beijing, CN;
Maoping Yin, Beijing, CN;
Tianyi Zhang, Beijing, CN;
Abstract
A catalyst component for olefin polymerization is disclosed, which comprises at least one diol ester type electron donor compound (a) and at least one diether type electron donor compound (b) among others, wherein the molar ratio of a to b is 0.55-50. A preparation method of the catalyst component, a catalyst comprising the catalyst component, and an olefin polymerization method using the catalyst which can especially be used for preparation of polypropylenes of low ash contents are also disclosed.