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. 03, 2004
Filed:
Aug. 31, 2001
Terunori Fujita, Yamaguchi, JP;
Yasushi Tohi, Yamaguchi, JP;
Makoto Mitani, Yamaguchi, JP;
Shigekazu Matsui, Yamaguchi, JP;
Junji Saito, Yamaguchi, JP;
Masatoshi Nitabaru, Yamaguchi, JP;
Kiyoaki Sugi, Yamaguchi, JP;
Haruyuki Makio, Yamaguchi, JP;
Toshiyuki Tsutsui, Yamaguchi, JP;
Mitsui Chemicals, Inc., Tokyo, JP;
Abstract
The invention provides olefin polymerization catalyst exhibiting excellent polymerization activities, a process for olefin polymerization using the catalyst, a novel transition metal compound useful for the catalyst, and an &agr;-olefin/conjugated diene copolymer having specific properties. The olefin polymerization catalyst of the invention comprises (A) a transition metal compound of formula (I) or (II), and (B) an organometallic compound, an oranoaluminum oxy-compound or an ionizing ionic compound. The novel transition metal compound of the invention is a compound of formula (I) wherein M is a transition meal atom of Group 3 or 4 of the periodic table; m is an integer of 1 to 3; R is a hydrocarbon group, etc.; R to R are each H, a halogen, a hydrocarbon group, etc.; R is a halogen, a hydrocarbon group, etc.; n is a number satisfying a valence of M; and X is a halogen, a hydrocarbon group, etc.