Olefin polymerization catalyst carrier, solid catalyst component and use thereof

US11098142B2 · kind B2 · utility

Assignee

• Renqiu Lihe Technology Ltd. · CN

Inventors

• Zhiwu Wang · Beijing, CN
• Shuhang LI · Beijing, CN
• Huashu Li · Renqiu City, CN
• Junwei Zhang · Austin, US
• Hui Zhang · Renqiu City, CN
• Le Hu · Beijing, CN
• Jinsong DAI · Renqiu City, CN
• Qingli Ma · Beijing, CN
• Jingyu Wang · Beijing, CN

Key dates

• Filing date: Feb 2, 2019
• Grant date: Aug 24, 2021
• Expiry date: Sep 4, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01F5/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A method of making an olefin polymerization catalyst carrier with a general structure formula of Mg(ORI)n(ORII)2-n, wherein: 0≤n≤2, and RI and RII can be the same or different and are each independently selected from a C1-C20 hydrocarbon group by reacting an alcohol with a metal magnesium powder under the protection of nitrogen in the presence of a halogen or a halogen-containing compound to obtain a first product, and subjecting the product to a treatment pressure of from 0.2 to 5.0 MPa at a treatment temperature of from 80 to 200° C. for a duration of between 2 minutes and 6 hours. Also provided is a method of making an olefin polymerization solid catalyst component which includes the catalyst carrier, a titanium compound, and at least one electron donor compound.