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:
Sep. 24, 2013
Filed:
Jun. 03, 2011
Zhifei LI, Beijing, CN;
Kuilong Tan, Beijing, CN;
Hao Wang, Beijing, CN;
Jianjun Yi, Beijing, CN;
Qinghong Xu, Beijing, CN;
Weisong Cui, Beijing, CN;
Wei Bai, Beijing, CN;
Xinyuan Liu, Beijing, CN;
Pu Xu, Beijing, CN;
Wanqing Ju, Beijing, CN;
Zhifei Li, Beijing, CN;
Kuilong Tan, Beijing, CN;
Hao Wang, Beijing, CN;
Jianjun Yi, Beijing, CN;
Qinghong Xu, Beijing, CN;
Weisong Cui, Beijing, CN;
Wei Bai, Beijing, CN;
Xinyuan Liu, Beijing, CN;
Pu Xu, Beijing, CN;
Wanqing Ju, Beijing, CN;
PetroChina Company Limited, , CN;
Abstract
Disclosed is a catalyst for the polymerization of olefins comprising thienyl-substituted silanes, which comprises a solid titanium catalyst component containing titanium, magnesium and a halogen as the main components, an alkylaluminum compound, and a component of organosiloxane compound comprising two thienyl as substituents represented by general formula (I). The molar ratio of each catalyst component is 1:50-150:5-50 based on titanium:aluminum:silicon. When the catalyst is used in the polymerization of propylene, the polymerisate obtained has a very high degree of isotacticity, and the yield is high.