The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 16, 2005
Filed:
Jun. 12, 2003
Jing-cherng Tsai, Kaohsiung, TW;
Ming-yuan Wu, Nantou, TW;
Tung-ying Hsieh, Taipei, TW;
Yuh-yuan Wei, Hsinchu, TW;
Chao-ying Yu, Kaohsiung, TW;
Jing-Cherng Tsai, Kaohsiung, TW;
Ming-Yuan Wu, Nantou, TW;
Tung-Ying Hsieh, Taipei, TW;
Yuh-Yuan Wei, Hsinchu, TW;
Chao-Ying Yu, Kaohsiung, TW;
Abstract
A catalyst composition for preparing olefin polymers. The catalyst composition includes a metallocene compound and an activating cocatalyst. In the metallocene compound, two cyclopentadienyl groups are bridged by X (carbon, silicon, germanium or tin) in a ring structure. The bite angle θ formed by the two cyclopentadienyl rings and X is equal to or greater than 100 degrees. The obtained olefin polymer has high cycloolefin conversion and a high glass transition temperature. In addition, the catalyst composition can still maintain relatively high activity at high temperature reaction conditions.