Sumitomo Chemical Company, Limited

Masaaki Nabika

Tatsuya Miyatake

Hidenori Hanaoka

Tsuyoshi Watanabe

Kotohiro Nomura

Hiroaki Katayama

Masayuki Fujita

Nobuo Oi

Yoshinori Seki

Seiki Kiuchi

Norio Kawamura

Akio Iami

Akio Imai

Yoshiaki Oda

Akira Miyashita

Kiyoshi Fujisawa

Masanobu Hidai

Hirofumi Johohji

A transition metal complex of the following formula (1): in which A represents an atom of Group 16 of the periodic table; Brepresents an atom of Group 14 of the periodic table; Mrepresents a transition metal atom of Group 4 of the periodic table; Cprepresents a group having a cyclopentadiene anion backbone; R, R, R, R, Rand Rrepresent independently of one another a hydrogen atom, a halogen atom, a Calkyl group optionally substituted with a halogen atom; R, R, R, R, Rand Rrepresent independently of one another a hydrogen atom, a Calkyl group optionally substituted with a halogen atom; and a 1,3-diene comprising R, R, R, R, R, Rand 4 carbon atoms coordinates on M, and the 1,3-diene may be of either a cis or trans form, or a mixed form thereof, although the coordination form is not limited, and the double bonds may be delocalized. When this transition metal complex is used as a catalytic component, high molecular weight polyolefin is produced with high catalytic activity.

Transition metal complex, process for producing the same, and use

A process for producing an olefin oligomer, which comprises the steps of (1) contacting a transition metal compound with a compound represented by the formula, RRA&#x2014;G&#x2014;ARR, to produce a contact product (i), (2) contacting an alumoxane compound with an organoaluminum compound to produce a contact product (ii), and (3) contacting the contact product (i), the contact product (ii), and an olefin with one another, wherein A is a nitrogen atom, a phosphorus atom, an arsenic atom or an antimony atom; G is a divalent group; and R, R, Rand Rare independently of one another a hydrocarbyl group, a halogenated hydrocarbyl group, an oxygen-containing hydrocarbyl group, a sulfur-containing hydrocarbyl group, a selenium-containing hydrocarbyl group, or a tellurium-containing hydrocarbyl group.

Process for producing olefin oligomer

A process for producing an olefin oligomer, which comprises the steps of (1) contacting an olefin with an organoaluminum compound to produce a contact product (i), (2) contacting a transition metal compound with a compound represented by the formula, RRA-G-ARR, to produce a contact product (ii), and (3) contacting the contact product (i), the contact product (ii), an alumoxane compound, and optionally an olefin with one another, wherein A is a nitrogen atom, a phosphorus atom, an arsenic atom or an antimony atom, and As are the same as or different from each other; G is a divalent group; and R, R, Rand Rare independently of one another a hydrocarbyl group, a halogenated hydrocarbyl group, an oxygen-containing hydrocarbyl group, a sulfur-containing hydrocarbyl group, a selenium-containing hydrocarbyl group, or a tellurium-containing hydrocarbyl group.

A modified aluminum oxy compound (A) obtained by reacting an aluminum oxy compound (a), water (b) and a compound having a hydroxyl group (c); a polymerization catalyst component comprising the modified aluminum oxy compound; a polymerization catalyst obtained by contacting said modified aluminum oxy compound (A), a transition metal compound (B) and optionally an organoaluminum compound (C) and a specified boron compound; and a process for producing an olefin polymer or an alkenyl aromatic hydrocarbon polymer with the polymerization catalyst.

Modified aluminum oxy compound, polymerization catalyst and process for producing olefin polymer and alkenyl

A catalyst obtained by contacting a specific transition metal compound (A) of Group 7 of the Periodic Table of the Elements, having a pyrazolyl group with an aluminum compound selected from organoaluminums and aluminoxanes and/or a specific boron compound, and a process for producing an addition polymer which comprises polymerizing an addition polymerizable monomer with the catalyst.

Catalyst for addition polymerization and process for producing an addition polymer

A catalyst for addition polymerization obtained by bringing the following (A) into contact with (B) a specific organic aluminum compound and/or aluminoxane, and (C) a specific boron compound, and a process for producing an addition polymer with the same.

Transition metal compound, catalyst for addition polymerization, and process for producing addition polymer

Solid catalyst component and catalyst for olefin polymerization, process for producing olefin polymer and process for producing solid catalyst component for olefin polymerization

Catalyst component and catalyst for addition polymerization, and process for producing addition polymer

A modified aluminum oxy compound(A) obtained by reacting an aluminum oxy compound(a), water (b) and a compound having a hydroxyl group(c); a polymerization catalyst component comprising the modified aluminum oxy compound; a polymerization catalyst obtained by contacting said modified aluminum oxy compound(A), a transition metal compound(B) and optionally an organoaluminum compound(C) and a specified boron compound; and a process for producing an olefin polymer or an alkenyl aromatic hydrocarbon polymer with the polymerization catalyst.

Modified aluminum oxy compound, polymerization catalyst and process for producing olefin polymer and alkenyl aromatic hydrocarbon polymer

Transition metal compound, addition polymerization catalyst component, addition polymerization catalyst and process for production of olefin polymer

The present invention relates to a transition metal complex, a process for producing the same, a polymerization catalsyt containing the transition metal complex and a process for producing polymers which uses the catalysts.

Transition metal complex, process for producing the same, olefin polymerization catalyst containing the transition metal complex and process for producing olefin polymers

The present invention provides a process for producing aminosaline compounds which are useful as precursors for ligands in the transition metal complexes, said process avoiding handling of solid which is troublesome in isolation and purification and combustible upon contact with air, having smaller number of reaction steps, and giving a high yield, in industrial scale. The present invention has a great value that said process for production could be carried out at an industrially advantageous temperature of -20.degree. or higher.

Process for producing aminosilane compounds

A method for purifying a transition metal compound, which comprises conducting crystallization of a transition metal compound from a solution containing the transition metal compound while stirring. According to the present invention, it is possible to purify and produce efficiently a transition metal compound at high purity under industrially and economically advantageous conditions.

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Ichihara, Japan

Masaaki Nabika