Alkoxy magnesium supported olefin polymerization catalyst component, catalyst and application thereof

US11124583B2 · kind B2 · utility

Assignee

• BEIJING LIHE TECHNOLOGY LTD · CN

Inventors

• Zhiwu Wang · Beijing, CN
• Shuhang LI · Beijing, CN
• Huashu Li · Renqiu City, CN
• Junwei Zhang · Austin, US
• Le Hu · Beijing, CN
• Jinsong DAI · Renqiu City, CN
• Qingli Ma · Beijing, CN
• Yong GAO · Nanhu, CN
• Wenjie Jiao · Beijing, CN
• Xinghuo Wang · Beijing, CN
• Hao Chen · 流花街道, CN

Key dates

• Filing date: Jun 24, 2019
• Grant date: Sep 21, 2021
• Expiry date: Jun 24, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2531/0238
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Provided is an alkoxy magnesium supported olefin polymerization catalyst component, comprising the reaction products of the following components: at least one alkoxy magnesium compound of Mg(OR1′)N(OR2′)2-N, at least one titanium compound of general formula Ti(OR)nX4-n, at least one ortho-phenylene diester electron donor compound a, and at least one diether electron donor compound b, wherein the molar ratio of a to b is 0.05 to 20. The catalyst component has an ultrahigh polymerization activity when used for olefin polymerization, and does not require the use of an external electron donor, but can also obtain a polymer with a high isotacticity, and the resulting polymer has a relatively wide molecular weight distribution and a relatively low ash content.