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:
Sep. 24, 2002
Filed:
Mar. 03, 2000
Yoshihumi Fukui, Tsukuba, JP;
Masahide Murata, Tokyo, JP;
Kazuo Soga, late of Ishikawa-ken, JP;
Michihiko Asai, Tsukuba, JP;
Yasuzou Suzuki, Tsukuba, JP;
Akira Miyazawa, Tsukuba, JP;
Kenji Tsuchihara, Tsukuba, JP;
Hiroyuki Ozaki, Tsukuba, JP;
Masanao Kawabe, Tsukuba, JP;
Naoya Kishi, Kanazawa, JP;
Other;
Abstract
A catalyst comprising an organoaluminum compound and a vanadium chelate compound having the lability to cause olefins to undergo living coordination polymerization is contacted with a terminal diolefin to obtain a catalyst for living polymer production. When the above contact is:conducted in the presence of a cycloolefin or an internal olefin, the yield of a living polymer can be improved. By modifying all ends of the living polymer obtained, a telechelic olefin polymer is obtained in which all the polymer chains are modified with functional groups.