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Imuta Junichi C O Mitsui Petro, Saito Junji C O Mitsui Petroch, Ueda Takashi C O Mitsui Petroc, Kiso Yoshihisa C O Mitsui Petr, Mizuno Akira C O Mitsui Petroc, Kawasaki Masaaki C O Mitsui Pe, Hashimoto Mikio C O Mitsui Pet: Novel transition metal compound, and polymerization catalyst containing it.. Mitsui Petrochemical, December 21, 1994: EP0629631-A2 (67 worldwide citation)

A transition metal compound of formula (I): wherein M is a transition metal of Group IVa, Group Va and Group VIa of the periodic table; R and R, which may all be identical or different from each other, are each a hydrogen atom, a halogen atom, a hydrocarbon group of 1 to 20 carbon atoms, a halogenat ...


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Tsutsui Toshiyuki C O Mitsui P, Yoshitsugu Ken C O Mitsui Petr, Ohgizawa Masaaki C O Mitsui Pe, Imuta Junichi C O Mitsui Petro, Matsumoto Tetsuhiro Mitsui Pet: Olefin polymerization catalyst and process for olefin polymerization. Mitsui Petrochemical, February 21, 1996: EP0697419-A1 (2 worldwide citation)

The present invention provides an olefin polymerization catalyst having a bulk density of not less than 0.3 g/cm and a fluidity index of not less than 45 comprising: a fine particle carrier; (A) a transition metal compound of Group IVB metal of the periodic table, containing a ligand having a cyclop ...


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Ori Aiichiro C O Mitsui Petroc, Imuta Junichi C O Mitsui Petro, Kihara Noriaki C O Mitsui Petr: Process for preparing imidazole derivatives.. Mitsui Petrochemical, December 27, 1990: EP0404175-A1 (1 worldwide citation)

Process for preparing imidazole derivatives of the general formula (II) : wherein R and R independently are loweralkyl, by desulfurizing a mercaptoimidazole derivative of the general formula (I) : wherein R and R are as defined above, with nitric acid optionally in the presence of a nitrite. The com ...