Ube Industries, Inc.

Toshifumi Fukunaga

Hiroshi Sato

Masato Murakami

Toshikazu Machida

Takefumi Yano

Yasuhiro Tanaka

Shigeru Ikai

Hiroyuki Ikeuchi

Motozo Yoshikiyo

Osamu Kimura

Satoshi Bandai

Yasuhisa Sakakibara

Takashi Kitamura

Takamasa Fujii

The invention has an object to provide a catalyst for polymerizing or copolymerizing an &#x3b1;-olefin, catalyst constituent thereof, and method of polymerizing &#x3b1;-olefins with the catalyst, for production of &#x3b1;-olefin polymers or copolymers with high hydrogen response, high polymarization reaction rate, high stereoregularity and excellent melt fluidity. The invention discloses a catalyst constituent of the catalyst for polymerizing or copolymerizing an &#x3b1;-olefin, represented by Formula 37 or 38:Si(OR)(NRR)Formula 37(where in Formula 37, Ris a hydrocarbon group with 1 to 6 carbon atoms; Ris a hydrocarbon group with 1 to 12 carbon atoms or hydrogen; and Ris a hydrocarbon group with 1 to 12 carbon atoms)RNSi(OR)Formula 38(where in Formula 38, Ris a hydrocarbon group with 1 to 6 carbon atoms; and RN is a cyclicl amino group).

Catalysts for polymerization or copolymerization of &#x3b1;-olefins, catalyst components thereof, and processes for polymerization of &#x3b1;-olefins with the catalysts

A polymer of ethylenically unsaturated monomer, for example, 1,3-butadiene, having a desired molecular weight and distribution thereof is produced, with a high stability, by preparing a solution of hydrogen in an inert organic solvent for the monomer in which a vapor-liquid phase equilibrium of hydrogen is attained, and then by addition-polymerizing the monomer in the hydrogen-dissolved inert organic solvent in the presence of a catalyst preferably including a metallocene complex of transition metal compound, an inert compound of a non-coordination anionic compound with a cationic compound, an organic metal (aluminum) compound and, optionally, water.

Method of producing a polymer

A di(polycyclic amino)dialkoxysilane which is of value as an auxiliary catalyst component for polymerizing an .alpha.-olefin to produce an .alpha.-olefin polymer having a high stereoregularity and a broad molecular weight distribution is prepared by reacting a secondary polycyclic-amine compound with an organomagnesium compound in an ether solvent, to produce a polycyclic-amido magnesium compound, and reacting the polycyclic-amido magnesium compound with a tetraalkoxysilane in a solvent mixture of an ether solvent and an inert hydrocarbon solvent.

Process for preparing di (polycyclic amino) dialkoxysilane

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Ichihara, Japan

Toshifumi Fukunaga