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Toshihiko Sugano, Kazuhiro Yamamoto: Catalysts for olefin polymerization and a process for preparing olefin polymers therewith. Mitsubishi Chemical Corporation, Oblon Spivak McClelland Maier & Neustadt P C, August 24, 1999: US05942459 (57 worldwide citation)

The object of the present invention is to provide a polyolefin having a good particle property in a high yield without use of an expensive alumoxane. The present invention comprises a catalyst for olefin polymerization comprising the following ingredients (A), (B) and (C), and a process for preparin ...


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Takashi Fujita, Toshihiko Sugano, Hajime Mizuno, Hideshi Uchino: Propylene copolymer composition. Mitsubishi Petrochemical Company, Oblon Spivak McClelland Maier & Neustadt, July 19, 1994: US05331054 (51 worldwide citation)

A propylene copolymer composition enabling the production of a film having excellent low-temperature heat sealing ability and blocking resistance, is obtained by blending 1 to 70 wt % of a component A and 30 to 99 wt % of a component B. The component A comprises either a propylene homopolymer or a c ...


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Masayuki Tomita, Hiroshi Nakano, Hideshi Uchino, Toshihiko Sugano, Mitsutoshi Aritomi: Functionalized olefin polymers. Mitsubishi Petrochemical Company, Oblon Spivak McClelland Maier & Neustadt, October 12, 1993: US05252677 (44 worldwide citation)

A functionalized polymer having excellent adhesion, printability, and compatibility in polymer blends or the like which are obtained by introducing an epoxy group, a hydroxyl group or a sulfonic group into a syndiotactic .alpha.-olefin polymer having an olefinic unsaturated bond at its terminus is d ...


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Toshihiko Sugano, Takashi Fujita, Kazuyo Kuwaba: Method for producing .alpha.-olefin polymers. Mitsubishi Petrochemical Company, Oblon Spivak McClelland Maier & Neustadt, September 13, 1994: US05346925 (39 worldwide citation)

A method for preparing an .alpha.-olefin polymer in which an .alpha.-olefin is polymerized in the presence of a catalyst, characterized in that the catalyst is a solid obtained by making the following components (ii) and (iii) be supported in the component (i):


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Toshihiko Sugano, Tomohiko Takahama: Catalyst components for polymerization of olefins and use thereof. Mitsubishi Chemical Corporation, Oblon Spivak McClelland Maier & Neustadt P C, July 15, 1997: US05648440 (33 worldwide citation)

Disclosed is a catalyst component for the polymerization of olefins, which is a compound having the following structure: ##STR1## wherein R.sup.1 is a hydrocarbon radical having 1 to 10 carbon atoms or a halogen-containing hydrocarbon radical having 1 to 10 carbon atoms, and R.sup.2 s are each a hyd ...


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Masayuki Tomita, Hideshi Uchino, Toshihiko Sugano, Takashi Fujita, Mitsutoshi Aritomi: Aminated olefin polymers. Mitsubishi Petrochemical Company, Oblon Spivak McClelland Maier & Neustadt, August 22, 1995: US05444125 (30 worldwide citation)

An aminated polymer having excellent adhesion, printability, and compatibility in polymer blends or the like which are obtained by introducing an amino group, into an isotactic .alpha.-olefin polymer having an olefinic unsaturated bond at its terminus is disclosed. The terminal unsaturated isotactic ...


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Toshihiko Sugano, Tomohiko Takahama: Catalyst component for use in the polymerization of .alpha.-olefins and process for producing .alpha.-olefin polymers using the same. Mitsubishi Chemical Corporation, Oblon Spivak McClelland Maier & Neustadt, April 23, 1996: US05510502 (30 worldwide citation)

A catalyst component for use in the polymerization of .alpha.-olefins, comprising a compound represented by the following general formula [I]: ##STR1## wherein R.sup.1 s represent a hydrogen atom, a C.sub.1-6 hydrocarbon group or a C.sub.1-12 hydrocarbon group containing silicon; each of R.sup.2 and ...


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Toshihiko Sugano, Naoshi Iwama, Eiji Isobe, Toru Suzuki, Yasuo Maruyama, Satoshi Hayakawa, Hisashi Shoda, Masami Kashimoto, Taku Kato, Takayuki Aoshima, Sugio Nishimura, Yoshinori Suga, Stefan Sieber: Catalysts for polymerization of &agr;-olefins, process for producing &agr;-olefin polymers, novel transition metal compounds and catalyst components for polymerization of &agr;-olefin. Mitsubishi Chemical Corporation, Nixon & Vanderhye, January 22, 2002: US06340652 (29 worldwide citation)

Catalysts for polymerization of &agr;-olefin, composed of a transition metal compound, an inorganic silicate or an ion exchangeable layer compound other than silicate, and optionally an organoaluminum compound, are described. The transition metal compound is represented by formula (I):


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