Catalyst for polymerization of olefins comprising thienyl-substituted silanes

US8541332B2 · kind B2 · utility

Assignee

• PetroChina Company Limited · CN

Inventors

• Zhifei Li · 翁根苏木, CN
• Kuilong Tan · Beijing, CN
• Hao Wang · Hangzhou City, CN
• Jianjun Yi · Beijing, CN
• Qinghong Xu · Lauderdale, US
• Weisong Cui · Beijing, CN
• Wei Bai · Nanhu, CN
• Xinyuan Liu · Shanghai, CN
• Pu Xu · Allen, US
• Wanqing Ju · Beijing, CN

Key dates

• Filing date: Jun 3, 2011
• Grant date: Sep 24, 2013
• Expiry date: Jun 3, 2031

Classification

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

Abstract

Disclosed is a catalyst for the polymerization of olefins comprising thienyl-substituted silanes, which comprises a solid titanium catalyst component containing titanium, magnesium and a halogen as the main components, an alkylaluminum compound, and a component of organosiloxane compound comprising two thienyl as substituents represented by general formula (I). The molar ratio of each catalyst component is 1:50-150:5-50 based on titanium:aluminum:silicon. When the catalyst is used in the polymerization of propylene, the polymerisate obtained has a very high degree of isotacticity, and the yield is high.