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:
Dec. 25, 2012
Filed:
Dec. 01, 2008
Makoto Mitani, Sodegaura, JP;
Yasunori Yoshida, Sodegaura, JP;
Junichi Mohri, Sodegaura, JP;
Kazutaka Tsuru, Sodegaura, JP;
Seiichi Ishii, Sodegaura, JP;
Shinichi Kojoh, Sodegaura, JP;
Tomoaki Matsugi, Sodegaura, JP;
Junji Saito, Sodegaura, JP;
Naoto Matsukawa, Sodegaura, JP;
Shigekazu Matsui, Sodegaura, JP;
Takashi Nakano, Sodegaura, JP;
Hidetsugu Tanaka, Sodegaura, JP;
Norio Kashiwa, Sodegaura, JP;
Terunori Fujita, Sodegaura, JP;
Makoto Mitani, Sodegaura, JP;
Yasunori Yoshida, Sodegaura, JP;
Junichi Mohri, Sodegaura, JP;
Kazutaka Tsuru, Sodegaura, JP;
Seiichi Ishii, Sodegaura, JP;
Shinichi Kojoh, Sodegaura, JP;
Tomoaki Matsugi, Sodegaura, JP;
Junji Saito, Sodegaura, JP;
Naoto Matsukawa, Sodegaura, JP;
Shigekazu Matsui, Sodegaura, JP;
Takashi Nakano, Sodegaura, JP;
Hidetsugu Tanaka, Sodegaura, JP;
Norio Kashiwa, Sodegaura, JP;
Terunori Fujita, Sodegaura, JP;
Mitsui Chemicals, Inc., Tokyo, JP;
Abstract
Olefin polymer with narrow molecular weight distribution and specific molecular weight, olefin polymer having functional group introduced at terminal, tapered polymer containing segment wherein monomer composition continuously changes in the polymer chain, olefin polymer having different segments bonded to each other, and process for preparing these polymers. The olefin polymers are polymers of Ccarbon atom olefins and have a number-average molecular weight of ≧500 and Mw/Mn of ≦1.5. In syntheses, an olefin of 2-20 carbon atoms is polymerized in the presence of a catalyst comprising a transition metal compound represented by the formula LMXwherein M is a transition metal atom of Group 3-11, m is 1-5, n is a number satisfying a valence of M, L is a ligand—coordinated to the central metal M—which contains a heteroatom having no direct bond to the central metal, and X is e.g. halogen or a hydrocarbon.