Catalyst component and catalyst for olefin polymerization, and application thereof

US11970510B2 · kind B2 · utility

Assignees

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

Inventors

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

Key dates

• Filing date: Oct 15, 2019
• Grant date: Apr 30, 2024
• Expiry date: Mar 14, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2410/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Disclosed are a catalyst component and a catalyst for olefin polymerization, and an olefin polymerization method. The catalyst component comprises magnesium, titanium, a halogen and an internal electron donor, wherein the internal electron donor comprises a monocarboxylic acid ester compound and a diether compound, and the molar ratio of the monocarboxylic acid ester compound to the diether compound is (0.0035-0.7):1. By using the catalyst, a polymer having both a high isotactic index and a high melt flow index can be prepared.