Catalyst composition for olefin polymerization and application of same

US9822196B2 · kind B2 · utility

Assignees

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

Inventors

• Changxiu Li · Beijing, CN
• Mingzhi Gao · Beijing, CN
• Haitao Liu · Boise, US
• Jing Ma · Beijing, CN
• Jianhua Chen · Plymouth, US
• Xianzhong Li · Beijing, CN
• Xiaoxia Cai · Beijing, CN
• Jixing Ma · Beijing, CN
• Jun Wang · Beijing, CN
• Jianjun Hu · Lo Wu, CN

Key dates

• Filing date: Sep 28, 2014
• Grant date: Nov 21, 2017
• Expiry date: Sep 28, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F110/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present disclosure discloses a catalyst composition for olefin polymerization, comprising the following components: a): a solid catalyst component containing magnesium, titanium, halogens, and at least one internal electron donor having a lone pair of electrons; b): an aluminum alkyl compound; and c): an external electron donor containing a first external electron donor C1, which is a malonate compound. In the present disclosure, a catalyst composition having an external electron donor that contains a malonate compound is used in olefin polymerization, in particular propene polymerization, and can significantly improve catalytic activity and hydrogen response of the catalyst and expand molecular weight distribution of polymers, which facilitates development of different polymers.