Idemitsu Kosan Company, Limited

Idemitsu Petrochemical Co., Ltd.

Masahiko Kuramoto

Akikazu Nakano

Masakazu Suzuki

Keisuke Funaki

Takashi Sumitomo

Toshikazu Ijitsu

Michihiro Sawada

Haruhito Sato

Nobuhide Ishihara

Norio Tomotsu

Masami Watanabe

Michitake Uoi

Mizutomo Takeuchi

Hideo Teshima

Toshinori Tazaki

Shinji Tanaka

Hiroshi Maezawa

Yasushi Shiraki

Takao Tamura

Hiroshi Hayashi

Takuji Okamoto

Hiroshi Uchida

Toshihiro Furusawa

Hajime Shouzaki

Fumio Okuda

Azuma Komeiji

Provided is a production process for &#x3b1;-olefin which does not comply the Shultz-Flory distribution and which is excellent in the yields of &#x3b1;-olefins of 1-hexene up to 1-tetradecene each having 6 to 14 carbon atoms, particularly a yield of 1-octene. The above production process is characterized by polymerizing ethylene using (A) a specific chromium compound, (B) a specific aminophosphine ligand compound and (C) a promoter.

Method for producing &#x3b1;-olefin

A catalyst for polymerizing vinyl compounds or &#x3b1;-olefins according to the present invention includes (A) a transition metal complex, (B) a clay, clay mineral or ion-exchangeable layered compound, modified with at least one organic compound selected from the group consisting of quaternary ammonium salts, amine compounds, and adducts of amine and Br&#xf6;nsted acid, and (C) at least one aluminoxy compound. The transition metal in (A) is selected from Groups 4 to 10 or Groups 8 to 10 of the Periodic Table for catalysts for vinyl compounds or &#x3b1;-olefins, respectively. The aluminoxy compound is represented by the general Formula  wherein a plurality of R groups are each independently Chydrocarbon group and at least one of the R groups is a hydrocarbon group having 2 or more carbon atoms; and z is an integer of 2 or more for catalyst for vinyl compounds and 2 to 4 for catalysts for &#x3b1;-olefins.

Catalyst for vinyl compound polymerization and process for producing vinyl polymer

A transition metal compound of Groups to 10 of the Periodic Table, represented by the following formula (1):

Transition metal compound, olefin polymerization catalyst, and method of polymerizing olefin

Catalyst for the production of &agr;-olefin and &agr;-olefin production method

A catalyst which comprises a compound of a transition metal in Groups 8 to 10 of the Periodic Table having a nitrogenous tridentate ligand, a clay, clay minteral, or lamellar ion-exchanging compound, an organosilane compound, and organoaluminum compound, etc.; and a process for producing a polyolefin with the catalyst. The catalyst is highly active, does not adhere to reactor walls, and can give a polyolefin excellent in powder morphology. Consequently, a polyolefin (especially polyethylene) can be industrially advantageously produced.

Catalyst for olefin polymerization and process for producing olefin polymer with the catalyst

A catalyst which is able to express a high oligomerizing activity of ethylene and a method for the production of &agr;-olefin where ethylene is oligomerized using said catalyst are provided. The present invention relates to a catalyst for the production of &agr;-olefin obtained by contacting (a) clay, clay mineral or ion-exchange layer compound with (b-1) a transition metal complex of Groups 4 to 6 of the Periodic Table and also relates to a method for the production of &agr;-olefin by oligomerization of ethylene using said catalyst. The present invention further relates to a catalyst for the production of &agr;-olefin obtained by contacting (a) clay, clay mineral or ion-exchange layer compound with (b-2) a transition metal complex of Groups 8 to 10 of the Periodic Table and also relates to a method of the production of &agr;-olefin by oligomerization of ethylene using said catalyst.

Catalysts for &agr;-olefin production and processes for producing &agr;-olefin

The invention relates to high-activity catalysts for olefin polymerization, to efficient methods for producing them, and to efficient methods of using the catalysts for producing high-quality polyolefins. The olefin polymerization with the catalysts does not require a large amount of an organic aluminium compound, and the residual metal in the polyolefins produced is much reduced. The catalysts are characterized by containing a product as prepared by contacting any of clay, a clay mineral and an ion-exchanging layered compound, an organic silane compound, and water with each other, or by containing a silane compound-processed clay.

Catalysts for olefin polymer production

A composition useful in molding comprises (A) from 10-95% by weight of a syndiotactic styrene resin, (B) from 5-90% by weight of a thermoplastic resin such as a polyolefin, polyester, polyether, polyamide or polycarbonate, and ( ) from 1-15 parts by weight of a rubber polymer such as maleic anhydride-modified or unmodified styrene-(butadiene or isoprene) block copolymer.

Syndiotactic styrene resin, thermoplastic resin and rubber

A polystyrene-based resin composition, comprising (A) a styrene-based resin with a mainly syndiotactic configuration, (B) a polyolefin, and (C) rubber polymer particles as main components, exhibits excellent heat resistance and impact resistance.

Composition of styrene resin, thermoplastic resin and rubber particles

A composition amenable to injection molding and extrusion comprises a syndiotactic styrene resin, a thermoplastic resin such as a polyolefin and an inorganic filler optionally contains a rubber.

Styrene-based resin composition with thermoplastic resin

A composition comprises (A) a syndiotactic styrene-based resin and (C) rubber polymer particles such as graft copolymers, butadiene or isoprene block copolymers optionally hydrogenated and/or modified with maleic anhydride, and other rubbers, and, optionally, (B) a thermoplastic resin such as a polycarbonate, and/or (D) a filler such as glass fibers.

Styrene resin with rubber polymer particles

Novel styrene-based resin compositions comprising a styrene-based resin having a mainly syndiotactic configuration in compbination with one or more of: (A) thermoplastic resins other than the styrene-based resin, (B) a rubber polyers, and (C) inorganic fillers. The compositions have improved heat resistance and impact resistance over non-syndiotactic styrene-based resin compositions.

Styrene-based resin composition

A polystyrene-based resin composition containing a styrene-based resin with mainly syndiotactic configuration, a polyamide, and a rubber polymer as main components. Styrene-based resins of mainly syndiotactic configuration include polystyrene, poly(alkylstyrene), poly(halogenated styrene), poly(alkoxystyrene), styrene copolymers comprised of polymerized units of at least of styrene, alkylstyrene, halogenated styrene and alkoxystyrene, and mixtures thereof

Composition of styrene resin, thermoplastic resin and rubber

A composition comprising 20-80 weight percent of a styrene polymer with mainly syndiotactic configuration, and 20-80 weight percent of a polycarbonate, and optionally an inorganic filler.

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Ichihara, Japan

Masahiko Kuramoto