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:
Jul. 15, 2008
Filed:
Feb. 16, 2005
Lunjia Xie, Beijing, CN;
Mingzhi Gao, Beijing, CN;
Siyuan Zhao, Beijing, CN;
Jing MA, Beijing, CN;
Zhufang Sun, Beijing, CN;
Haitao Liu, Beijing, CN;
Tianyi LI, Beijing, CN;
Mingsen Zhang, Beijing, CN;
Changjiang Wu, Beijing, CN;
Lunjia Xie, Beijing, CN;
Mingzhi Gao, Beijing, CN;
Siyuan Zhao, Beijing, CN;
Jing Ma, Beijing, CN;
Zhufang Sun, Beijing, CN;
Haitao Liu, Beijing, CN;
Tianyi Li, Beijing, CN;
Mingsen Zhang, Beijing, CN;
Changjiang Wu, Beijing, CN;
China Petroleum & Chemical Corporation, Chaoyang District, Beijing, CN;
Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation, Chaoyang District, Beijing, CN;
Abstract
The present invention relates to silicon ether compounds having a general formula (I), a method for the preparation thereof and use thereof as a component of catalysts for polymerization of olefins. In particular, in propylene polymerization, catalyst systems comprising the silicon ether compounds as external electron donor component exhibit good hydrogen response, and can be used to prepare polymer having high isotacticity at high yield. wherein R-Rgroups are as defined in the description.