Carrier for olefin polymerization catalyst, and preparation method therefor and application thereof

US12319773B2 · kind B2 · utility

Assignees

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

Inventors

• Yongtai Ling · Beijing, CN
• Xianzhi Xia · Beijing, CN
• Yuexiang Liu · Beijing, CN
• Weili Li · Beijing, CN
• Jin Zhao · Hangzhou City, CN
• Futang Gao · Beijing, CN
• Chunhong REN · Beijing, CN
• Yang Tan · Beijing, CN
• Tao Liu · Shanghai, CN
• Long Chen · Beijing, CN

Key dates

• Filing date: Oct 15, 2019
• Grant date: Jun 3, 2025
• Expiry date: Mar 12, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2410/07
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A carrier for an olefin polymerization catalyst contains a magnesium-containing compound and sulfur. The sulfur is at least one of an elemental sulfur, a complex sulfur, and a compound sulfur. The carrier has good particle morphology and a smooth surface, and has a narrow particle size distribution. The catalyst prepared from the carrier has high activity and good sensitivity to hydrogen regulation, and can improve the density of a polymer stack when being used for olefin polymerization.