M
Makoto Mitani
Researcher at Mitsui Chemicals
Publications - 149
Citations - 5453
Makoto Mitani is an academic researcher from Mitsui Chemicals. The author has contributed to research in topics: Polymerization & Catalysis. The author has an hindex of 37, co-authored 149 publications receiving 5312 citations. Previous affiliations of Makoto Mitani include Tokyo Institute of Technology.
Papers
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Journal ArticleDOI
A Family of Zirconium Complexes Having Two Phenoxy−Imine Chelate Ligands for Olefin Polymerization
Shigekazu Matsui,Makoto Mitani,Junji Saito,Yasushi Tohi,Haruyuki Makio,Naoto Matsukawa,Yukihiro Takagi,Kazutaka Tsuru,Masatoshi Nitabaru,Takashi Nakano,Hidetsugu Tanaka,and Norio Kashiwa,Terunori Fujita +12 more
TL;DR: In this article, a zirconium complex with two phenoxy−imine chelate ligands, bis[3-tert-butylsalicylidene)anilinato]zirconia(IV)dichloride (1), was found to display a very high ethylene polymerization activity with a viscosity average molecular weight (Mv) value of 0.9 × 104 at 25 °C at atmospheric pressure using methylalumoxane (MAO) as a cocatalyst.
Journal ArticleDOI
Living Polymerization of Ethylene Catalyzed by Titanium Complexes Having Fluorine-Containing Phenoxy−Imine Chelate Ligands
Makoto Mitani,Junichi Mohri,Yasunori Yoshida,Junji Saito,Seiichi Ishii,Kazutaka Tsuru,Shigekazu Matsui,Rieko Furuyama,Takashi Nakano,Hidetsugu Tanaka,Shinichi Kojoh,Tomoaki Matsugi,Norio Kashiwa,Terunori Fujita +13 more
TL;DR: It is suggested that the presence of a fluorine atom adjacent to the imine nitrogen is a requirement for the high-temperature living polymerization, and the fluorine of the active species for ethylene polymerization interacts with a beta-hydrogen of a polymer chain, resulting in the prevention of beta-Hydrogen transfer.
Journal ArticleDOI
Syndiospecific living propylene polymerization catalyzed by titanium complexes having fluorine-containing phenoxy-imine chelate ligands.
Makoto Mitani,Rieko Furuyama,Junichi Mohri,Junji Saito,Seiichi Ishii,Hiroshi Terao,Takashi Nakano,Hidetsugu Tanaka,Terunori Fujita +8 more
TL;DR: DFT calculations suggest that the attractive interaction between a fluorine ortho to the imine nitrogen and a beta-hydrogen of a growing polymer chain is responsible for the achievement of room-temperature living propylene polymerization.
Journal ArticleDOI
Living Polymerization of Ethylene with a Titanium Complex Containing Two Phenoxy-Imine Chelate Ligands.
Junji Saito,Makoto Mitani,Junichi Mohri,Yasunori Yoshida,Shigekazu Matsui,Seiichi Ishii,Shinichi Kojoh,Norio Kashiwa,Terunori Fujita +8 more
Patent
Olefin polymerization catalysts, transition metal compounds, processes for olefin polymerization, and .alpha.-olefin/conjugated diene copolymers
Terunori Fujita,Yasushi Tohi,Makoto Mitani,Shigekazu Matsui,Junji Saito,Masatoshi Nitabaru,Kiyoaki Sugi,Haruyuki Makio,Toshiyuki Tsutsui +8 more
TL;DR: In this article, a process using olefin polymerization catalysts exhibiting excellent polymerization activities is described, which is useful in producing α-olefin/conjugated diene copolymers having specific properties.