Mitsubishi Chemical Corporation

Japan Polypropylene Corporation

Masami Kashimoto

Naoshi Iwama

Toshihiko Sugano

Taku Kato

Takayuki Aoshima

Masato Nakano

Hisashi Shoda

Satoshi Hayakawa

Yoshinori Suga

Yasuo Maruyama

Hideshi Uchino

Toru Suzuki

Eiji Isobe

Sugio Nishimura

Tomohiro Kato

Stefan Sieber

Toshinori Suzuki

Takao Tayano

Hisashi Ohtaki

Takayoshi Takahashi

Tsutomu Ushioda

The present invention provides a metallocene complex capable of producing a homopolypropylene having a high melting point in the homopolymerization of propylene, and a production method of an olefin polymer using the same. The metallocene complex of the present invention is represented by formula [I].

Metallocene complex and method for producing olefin polymer

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

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

Growing community of inventors

Kanagawa, Japan

Masami Kashimoto