Sumitomo Chemical Company, Limited

Makoto Satoh

Yasuki Fujiwara

Akio Imai

Shin-ichi Kumamoto

Hideki Oshima

Kazuki Wakamatsu

Junichi Kimura

Ritsuo Setoh

Katsunari Inagaki

Hajime Sadatoshi

Yoichi Obata

Naofumi Naga

Minoru Takane

Jun Ohara

Hideki Ohshima

Ken Yoshimura

Kazuo Takaoki

Hiroshi Kuribayashi

Masahito Usui

Teruyoshi Kiyota

Shin-Ichi Kumamoto

A process for producing a modified particle, which comprises the step of contacting a compound (a) defined by the formula, ML, a compound (b) defined by the formula, RTH, a compound (c) or (e) defined by the formula, RM(OH)or RJ(OH), respectively, and a particle (d) with one another; a carrier comprising a modified particle produced by said process; a catalyst component (A) comprising a modified particle produced by said process; a process for producing a catalyst for addition polymerization, which comprises the step of contacting said catalyst component (A), a transition metal compound (B) and an optional organoaluminum compound (C) with one another; and a process for producing an addition polymer, which comprises the step of addition polymerizing an addition-polymerizable monomer in the presence of a catalyst for addition polymerization produced by said process.

Process for producing modified particle; carrier; catalyst component for addition polymerization; process for producing catalyst for addition polymerization; and process for producing addition polymer

A process for producing a modified particle, a carrier or a catalyst component for addition polymerization, which comprises the steps of (1) contacting a compound (a) represented by the defined formula MLwith a compound (b) represented by the defined formula RTH, thereby producing a contact product, and (2) contacting the contact product with a porous particle (d) and then with a compound (c) represented by the defined formula RTH; a process for producing a pre-polymerized catalyst component or a catalyst for addition polymerization, which comprises the steps of (1) contacting the above modified particle with a transition metal compound and optionally an organoaluminum compound, thereby producing a primary catalyst, and (2) pre-polymerizing an olefin in the presence of the primary catalyst; a process for producing a catalyst for addition polymerization, which comprises the step of contacting the above catalyst component with a transition metal compound and optionally an organoaluminum compound; and a process for producing an addition polymer, which comprises the step of addition polymerizing an addition polymerizable monomer in the presence of the above catalyst.

Process for producing modified particle, carrier or catalyst component for addition polymerization, pre-polymerized catalyst component therefor, catalyst therefor, and addition polymer

There are disclosed a process for producing a solid catalyst component and a catalyst for &#x3b1;-olefin polymerization, and a process for producing an &#x3b1;-olefin polymer, wherein the process for producing a solid catalyst component comprises the steps of:

Process for producing solid catalyst component and catalyst for &#x3b1;-olefin polymerization, and process for producing &#x3b1;-olefin polymer

There are provided (1) a process for producing a compound, which comprises the step of contacting a compound (A) defined by the formula, ML, a compound (B) defined by the formula, RTH, and a compound (C) defined by the formula, RTH; (2) a catalyst component for addition polymerization, which comprises a compound produced by said process; (3) a process for producing a polymerization catalyst, which comprises the step of contacting said catalyst component with a transition metal compound and an optional organoaluminum compound; and (4) a process for producing an addition polymer, which comprises the step of addition polymerizing an addition polymerizable monomer in the presence of a catalyst produced by said process.

Process for producing compound, catalyst component for addition polymerization, process for producing catalyst for addition polymerization, and process for producing addition polymer

A metal compound obtained by a process comprising the step of contacting, in a specific ratio, a compound represented by the formula ML, a compound represented by the formula RTH, and a compound represented by the formula RJ(OH); a catalyst component for addition polymerization comprising the metal compound; a catalyst for addition polymerization using the catalyst component; and a process for producing an addition polymer using the catalyst.

Metal compound, and catalyst component and catalyst for addition polymerization, and process for producing addition polymer

This invention concerns a solid catalyst component for olefin polymerization and the process for obtaining the catalyst component having titanium, halogen, magnesium, an organic acid ester and a relative surface area of 0.1&#x2013;15 m/g as measured according to a BET method and wherein the organic acid ester is contained in the solid catalyst component in an amount of 11% by weight or more.

Solid catalyst component and catalyst for olefin polymerization, and process for producing olefin polymer

There is provided a process for producing a catalyst for olefin polymerization, which comprises the step of contacting (1) an organ aluminum compound, (2) an external electron donor compound and (3) a solid catalyst component obtained by a process comprising the steps of;

Solid catalyst component for olefin polymerization, process for producing the same, process for producing catalyst for olefin polymerization, and process for producing olefin polymer

An &#x3b1;-olefin polymerization catalyst comprising (A) a solid catalyst component containing a titanium compound obtained by treating a solid product having a titanium content of 1.5% by weight or less obtained by reducing Ti(OR)X(Rrepresents a hydrocarbon group having 1 to 20 carbon atoms, X represents a halogen atom and a represents a number satisfying 0&#x3c;a&#x2266;4.) with an organomagnesium compound in the presence of an organosilicon compound having an Si&#x2014;O bond and an ester compound, with an ester compound, and treating the ester-treated solid with a mixture of an ether compound and titanium tetrachloride or a mixture of an ether compound, titanium tetrachloride and an ester compound, (B) an organoaluminum compound and (C) an electron donative compound, and a process for producing an &#x3b1;-olefin polymer with said &#x3b1;-olefin polymerization catalyst.

&#x3b1;-Olefin polymerization catalyst and process for producing &#x3b1;-olefin polymer

Process for producing solid catalyst component and catalyst for &agr;-olefin polymerization, and process for producing &agr;-olefin polymer

Process for producing catalyst for ethylene polymerization and process for producing ethylene polymer

Process for producing catalyst for olefin polymerization and process for producing olefin polymer

The present invention relates to a solid catalyst component for &agr;-olefin polymerization having a narrow particle size distribution of not less than 6.0 in terms of the value of N in a Rosin-Rammler function of particle size distribution and giving a catalytic activity of not less than 10,000 ((g-polymer produced/g-solid catalyst component)/hour) in polymerization. According to the present invention, there can be provided a solid catalyst component for &agr;-olefin polymerization capable of giving a poly-&agr;-olefin having the high bulk density and favorable particle properties with high catalytic activity.

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Ichihara, Japan

Makoto Satoh