Catalyst component for olefin polymerization, preparation method therefor and catalyst thereof

US10150822B2 · kind B2 · utility

Assignees

• CHINA PETROLEUM & CHEMICAL CORPORATION · CN
• BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION · CN

Inventors

• Qilong Zhou · Beijing, CN
• Zhong Tan · Beijing, CN
• Xiudong Xu · Beijing, CN
• Li'an Yan · Beijing, CN
• Weiwei Song · San Jose, US
• Fengkui Li · Houston, US
• Shanshan Yin · Chengdu, CN
• Jinhua Yu · Beijing, CN

Key dates

• Filing date: Jul 24, 2012
• Grant date: Dec 11, 2018
• Expiry date: Aug 3, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F110/08
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

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 (Ix), a cyclic polysiloxane (b2) represented by formula (Iy) and a Si—H functional group containing organosilicon compound (b3) represented by formula (Iz). 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 R1 to R10, n and z in the formulae (Ix), (ly) and (Iz) are as described in the specification.