Catalyst for olefin polymerization and preparation thereof and polymerization process

US7964678B2 · kind B2 · utility

Inventors

• Licai Wang · Yingkou, CN
• Zhanxian Gao · 东风镇, CN
• Wei Li · 东风镇, CN
• Guotong Zheng · 东风镇, CN
• Qingxin Dong · 东风镇, CN
• Riping Liu · Dalian, CN
• Xiaohuan Wang · Toronto, CA
• Nan Zhang · San Diego, US
• Jingzhuang Wang · Yingkou, CN
• Shimian Cai · Yingkou, CN

Key dates

• Filing date: Feb 24, 2006
• Grant date: Jun 21, 2011
• Expiry date: Mar 12, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F110/06
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The catalyst for olefin polymerization contains three components A, B and C. The component A is a solid catalyst containing titanium, magnesium, chlorine element and an internal electron donor, the internal electron donor consists of 1,4-diether [2,2′-dialkoxy-1,1′-biphenyl, 2,2′-dialkoxy-1,1′-binaphthalene, 10,10′-dialkoxy-9,9-biphenanthrene]and organic acid ester or 1,3-diether [9,9-bis(methoxymethyl)fluorine, 2,2-dialky 1-1,3-dimethoxypropane]; the component B is an organoaluminum compound; the component C is external electron donor-organic silicon compound or the 1,4 aromatic diether. The catalyst has high catalytic activity, and can be adjusted in the range from 40,000 to 150,000 gPP/gCat when used in propylene polymerization. The polymer made therefrom has isotactivity of 80 to 99 percent and the molecular weight distribution can be adjusted in a wide range. The invention provides a novel method for preparing the 1,4 aromatic diether.