Mitsubishi Chemical Corporation

Japan Polypropylene Corporation

Japan Polyethylene Corporation

Naoshi Iwama

Toshihiko Sugano

Masami Kashimoto

Hideshi Uchino

Taku Kato

Takayuki Aoshima

Yasuo Maruyama

Toru Suzuki

Eiji Isobe

Satoshi Hayakawa

Hisashi Shoda

Yoshinori Suga

Sugio Nishimura

Masato Nakano

Hisashi Ohtaki

Tomohiro Kato

Stefan Sieber

Eiji Taniyama

Hiroyuki Shimizu

Takao Tayano

Tomohiko Takahama

Minoru Kobayashi

Kazunari Abe

Tetsuya Morioka

Takayoshi Takahashi

Toshinori Suzuki

Tsutomu Ushioda

Kaori Imaeda

June Endo

The present invention relates to a polar group-containing olefin copolymer (A') which is produced through polymerization using a transition metal catalyst, which has a weight-average molecular weight falling within a specific range and which contains a polar group-containing monomer within a specific range; a multinary polar olefin copolymer (A&#x2033;) indispensably containing a polar monomer component that has a norbornene skeleton and a carboxyl group or an acid anhydride group and having three or more types of monomer units; and a resin composition (C) containing a specific amount of a polar group-containing olefin copolymer (A) and a specific amount of an olefin resin (B).

Polar group-containing olefin copolymer, multinary polar olefin copolymer, olefin resin composition, and adhesive material, laminate, and other application products using same

Provided are a metallocene complex that facilitates copolymerization of olefin monomers including propylene at a higher uptake rate of comonomers, i.e., ethylene and &#x3b1;-olefin, manufacture of a rubber component having a higher molecular weight, and manufacture of homopolypropylene having a higher melting point through homopolymerization of propylene, compared to traditional metallocene catalysts, and a method of olefin polymerization in the presence of such a metallocene complex. Also provided are, for example, a metallocene complex represented by general formula [I] (e.g., a metallocene complex having a substituent at position 6 of one or each indenyl ring and an optionally substituted furyl or thienyl group at position 2 of one or each indenyl ring), an olefin polymerization catalyst containing the metallocene complex, and a method of olefin polymerization involving olefin polymerization or copolymerization in the presence of the olefin polymerization catalyst.

Metallocene complex and olefin polymerization method

A metallocene complex by which high uptake efficiency of ethylene and/or &#x3b1;-olefin can be obtained compared with the conventional metallocene catalyst, and robber component having high molecular weight can be polymerized, and polymerization method of olefin. Metallocene complex (metallocene complex having furyl or thienyl group in which substituent exists at 5-position of indenyl ring, and substituent may exist at 2-position of indenyl ring, and the like) represented by the general formula [II], the catalyst for olefin polymerization characterized by comprising said metallocene complex, and polymerization method of olefin characterized that polymerization or copolymerization of olefin is carried out using said polymerization catalyst for olefin, and the like.

Metallocene complex and polymerization method of olefin

Disclosed is a novel transition metal compound which is used for forming a metallocene catalyst for olefin polymerization. Specifically disclosed is a novel transition metal compound represented by the general formula below which enables to form a metallocene catalyst that has a balanced reactivity with ethylene and a comonomer selected from &#x3b1;-olefins having 3-20 carbon atoms and enables to produce an &#x3b1;-olefin polymer having a high molecular weight. Also specifically disclosed are a catalyst for olefin polymerization containing such a transition metal compound, and a method for producing a propylene/ethylene-&#x3b1;-olefin block copolymer wherein such a catalyst is used. 

Transition metal compound, catalyst for olefin polymerization containing the same, and method for producing propylene/ethylene-&#x3b1;-olefin block copolymer by using the catalyst

To develop a catalyst component for olefin polymerization, a metallocene catalyst for olefin polymerization and a process for the production of an olefin polymer capable of producing an olefin polymer having a high molecular weight and a high melting point which can be extruded or injection-molded in a high yield and a novel transition metal compound to be used in these catalyst components a catalyst component for olefin polymerization is made of a transition metal compound represented by formula (I) shown below; a metallocene catalyst for olefin polymerization comprises the catalyst component for olefin polymerization; and a process for the production of an olefin polymer is performed in the presence of the metallocene catalyst for olefin polymerization: 

Catalyst component for olefin polymerization, catalyst for &#x3b1;-olefin polymerization and process for the production of &#x3b1;-olefin polymer

Catalysts for polymerization of &agr;-olefins, process for producing &agr;-olefin polymers, novel transition metal compounds and catalyst components for polymerization of &agr;-olefin

Process for producing &agr;-olefin polymers

Transition metal compounds

A catalyst component for the polymerization of alpha-olefins, represented by the following formula [I]: ##STR1## wherein R.sup.1 -R.sup.3 =H, a halogen, a C.sub.1-10 hydrocarbon radical, a Si-containing C.sub.1-18 hydrocarbon radical, or a halogen-containing C.sub.1-10, hydrocarbon radical (provided that R.sup.1 and R.sup.2 cannot be hydrogen at the same time); n=2 to 7; Q=a C.sub.1-20 hydrocarbon radical, a silylene or oligosilylene group having or not having a C.sub.1-20 hydrocarbon radical, a germylene group having or not having a C.sub.1-20 hydrocarbon radical; X and Y=H, a halogen, a C.sub.1-20 hydrocarbon radical, or an O- or N-containing C.sub.1-20 hydrocarbon radical; and M=a transition metal selected from the groups IVB-VIB; a catalyst for the polymerization of alpha-olefins, comprising the catalyst component; and a process for producing alpha-olefin polymers, where use is made of the catalyst. Use of the catalyst will produce alpha-olefin polymers having a high melting point and a high molecular weight in a high yield.

Catalyst component for polymerization of alpha-olefins and process for

The present invention provides a catalyst for polymerizing an .alpha.-olefin which is capable of producing an .alpha.-olefin polymer having a high molecular weight in a high yield under the polymerization conditions including at high temperature, and a process for preparing an .alpha.-olefin polymer, which catalyst comprises a Component (A) which comprises a coordination compound having a skeleton of a metallocene compound comprising an indenyl ring or a hydroindenyl ring which is an indenyl having a six-membered portion hydrogenated as a ligand and having Ti, Zr or Hf as a metal component in combination with a Component (B) which is, for example, an alumoxane. The coordination compound is crosslinked at the six-membered rings characterized by the fact that two of the indenyl or hydroindenyl groups are crosslinked at the six-membered ring of the indenyl or hydroindenyl group.

Catalyst component for the polymerization of .alpha.-olefins and a

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Yokohama, Japan

Naoshi Iwama