Maruzen Petrochemical Company, Limited

Shigeharu Yamamoto

Toshifumi Takemori

Masatoshi Tsuchitani

Sakae Kamiyama

Minoru Iijima

Yukiko Hane

Tetsuya Iizuka

Hiroshi Yamazaki

Kazuhiko Mizuno

Masashi Iida

Katsutoshi Nishitani

Masao Kawahara

Yoko Furuyama

Yoji Suzuki

Resin composition comprising ethylene-based polymers and process for its production

An olefinic copolymer having a cyclic structure is prepared by copolymerizing a) ethylene (M1) and b) dicyclopentadiene or tricyclopentadiene (M2), and, optionally c) a cyclic olefin (M3), in the presence of a catalyst which contains a metallocene compound (A) having formula &lsqb;1&rsqb;: H C(R&prime; Cp)(R&Prime; Cp)MX &lsqb;1&rsqb;, wherein M is zirconium or hafnium, Cp has a cyclopentadienyl skeleton, each of R&prime; and R&Prime; is a hydrocarbon group having 1 to 10 carbon atoms, each of two X's which may be the same or different from each other, is a halogen, a hydrogen, a hydrocarbon group having 1 to 20 carbon atoms, a halogenated hydrocarbon group, an alkylamino group, an alkoxy group, an aryloxy group of the formula &mdash;O&mdash;Ar&mdash;Y , a thioalkyl group, or a thioaryl group of the formula &mdash;S&mdash;Ar&mdash;Y ; wherein Ar is an aromatic ring, Y is a halogen, a hydrogen, a hydrocarbon group having 1 to 20 carbon atoms, a halogenated hydrocarbon group, an alkoxy group, an alkylamino group, a cyano group or a nitro group, and p is an integer of from 1 to 5, and each of m and n is an integer of from 0 to 4, provided that m and n are not equal, and m&plus;n is an integer of from 3 to 6, and an aluminoxane (B), is used.

Method for producing an olefin type copolymer having a cyclic structure

Catalyst component for polymerization of olefins, polymerization catalyst and process of polymerization of olefins by using the same

The present invention relates to a solid catalyst (D) for olefin polymerization comprising a magnesium-containing solid component (A) carrying thereon an organoaluminum-oxy compound (B) and a metallocene compound (C), the magnesium-containing compound (A) being obtained by heat treating a magnesium compound represented by the general formula: MgX .nH O where X represents a halogen atom and n is an integer of 1 to 12, and to a method of producing an olefinic polymer using the catalyst. In the case where the above solid catalyst for olefin polymerization is used, catalyst activity, particularly activity per solid catalyst, is high. Therefore, a deashing treatment step such as catalyst removal can be omitted. Further, the olefinic polymer produced has a narrow molecular weight distribution, and in the case of a copolymer, its monomer composition is uniform.

Solid catalyst for olefin polymerization and process for producing olefin polymer with the same

A solid catalyst for olefin polymerization, obtained by reacting a least one of a hydropolysiloxane compound, having the formula R H SiO , a silane compound of formula R Si(OH) , and condensates of the silane, with a compound of formula (MgR ) .(R MgX) to form a reaction product. The reaction product is reacted with an alcohol, having 1 to 4 carbon atoms, to obtain an intermediate product. The intermediate product, is then reacted with water to obtain reaction product. An organoaluminum oxy compound and a metallocene compound are carried on the solid reaction product. The solid catalyst may be used for olefin polymerization. The catalyst requires no deashing treatment and produces a polymer having high bulk density and narrow particle size distribution. Thus the solid catalystenables control of particle size of the polymer in a simple easy manner, and shows no adhesion of polymer onto the inner wall of autoclave.

Solid catalysts for the polymerization of olefins and process for the production of olefin polymers therewith

Process for the polymerization of olefins using a catalyst containing a novel catalyst component

Catalyst component and catalyst containing the component for polymerization of olefins

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Yotsukaido, Japan

Shigeharu Yamamoto