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:
Dec. 11, 2018
Filed:
Jul. 24, 2012
Qilong Zhou, Beijing, CN;
Zhong Tan, Beijing, CN;
Xiudong Xu, Beijing, CN;
Li'an Yan, Beijing, CN;
Weiwei Song, Beijing, CN;
Fengkui LI, Beijing, CN;
Shanshan Yin, Beijing, CN;
Jinhua Yu, Beijing, CN;
Qilong Zhou, Beijing, CN;
Zhong Tan, Beijing, CN;
Xiudong Xu, Beijing, CN;
Li'an Yan, Beijing, CN;
Weiwei Song, Beijing, CN;
Fengkui Li, Beijing, CN;
Shanshan Yin, Beijing, CN;
Jinhua Yu, Beijing, CN;
Abstract
A catalyst component (A) for olefin polymerization is prepared by contacting a solid component (a) containing magnesium, titanium, halogen and an internal electron donor compound with an organosilicon compound (b), wherein the organosilicon compound (b) is one or more selected from a Si—H functional group containing chainlike polysiloxane (b1) represented by formula (I), a cyclic polysiloxane (b2) represented by formula (I) and a Si—H functional group containing organosilicon compound (b3) represented by formula (I). In addition, a process for preparing the catalyst component and the corresponding catalyst is described. The catalyst component and its catalyst have high catalytic activity, good hydrogen response, and good stereospecificity, the catalyst can release its activity more evenly, and the obtained polymer has significantly increased bulk density. The definitions of Rto R, n and z in the formulae (I), (l) and (I) are as described in the specification.