Maruzen Petrochemical Company, Limited

Scivax Corporation.

Toshifumi Takemori

Shigeharu Yamamoto

Minoru Iijima

Masatoshi Tsuchitani

Yoshihisa Hayashida

Masashi Iida

Sakae Kamiyama

Tetsuya Iizuka

Masao Kawahara

Yukiko Hane

Takahisa Kusuura

Hiroshi Yamazaki

Takahito Mita

Yoshiaki Takaya

Mitsuru Fujii

Norio Futaesaku

Anupam Mitra

Kazuhiko Mizuno

Takuji Taguchi

Yuji Hashima

Teruyo Ikeda

Takuro Satsuka

Katsutoshi Nishitani

Yoko Furuyama

Yoji Suzuki

A resin composition for photoimprinting, a cured product of the resin composition which is excellent in etching and heat resistance, and a pattern forming process using the resin composition are provided. The resin composition contains photocurable monomer (A) containing at least one carbazole compound of formula (I): a photocurable monomer (B) containing at least one compound of the following formulae (II), (III), and (IV): and a photopolymerization initiator (C). The weight ratio of the photocurable monomer (A) to the photocurable monomer (B) is from 30/70 to 87/13.

Resin composition for photoimprinting, pattern forming process and etching mask

A cyclic-olefin-based thermoplastic resin for thermal imprint to be used in the production of a sheet or a film which contains at least one of skeletons represented by the following chemical equation 1 or the following chemical equation 2 in a main chain. The glass transition temperature Tg (&#xb0; C.) and the value ([M]) of MFR at 260&#xb0; C. satisfy the following equation 1, and [M]&#x3c;30. The thermal imprint characteristics (transferability, mold release characteristic, and the like) are superior and the productivity (throughput) is improved. 

Resin for thermal imprinting

An olefin polymerization solid catalyst including a reaction product of a transition metal compound and an organoaluminum compound carried on a support having silica treated with an organoaluminum-oxy compound.

Olefin polymerization catalyst and olefin polymerization method using the same

A solid catalyst for olefin polymerization, which comprises a silica carrier (A) having a specific surface area of from 600 to 850 m /g, a pore volume of from 0.1 to 0.8 ml/g and an average particle size of from 2 to 12 &mgr;m, and an organoaluminum-oxy compound (B) and a Group IVB transition metal compound (C) containing a ligand having a cyclopentadienyl skeleton, supported on the carrier (A).

Catalyst for olefin polymerization and process for polymerizing olefin by means thereof

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

Growing community of inventors

Chiba, Japan

Toshifumi Takemori