Toa Nenryo Kogyo Kabushiki Kaisha

Naomi Inaba

Hiroshi Ueno

Masafumi Imai

Shozo Wada

Hiroyuki Furuhashi

Tadashi Yamamoto

Makoto Yoda

Kouji Maruyama

Takeshi Nomura

Tokuo Makishima

Koh Watanabe

Tukuo Makishima

Makoto Miyazaki

Masami Kizaki

Masahito Fujita

Eiji Sezaki

Makota Yoda

Tokyo Makishima

Tadanao Kohara

A process for homopolymerizing an olefin or copolymerizing an olefin with another olefin in the presence of a catalyst composed of

Process for polymerization of olefins

A catalyst component for polymerization of olefins which is prepared by reacting a magnesium alkoxide with a silicon compound having at least one hydrogen-silicon bond, contacting the reaction product with a carboxylic acid halide and/or carboxylic acid anhydride, and contacting the resulting contact product with a titanium compound.

Catalyst component for polymerization of olefins

A process for preparing a catalyst component for the polymerization of olefins which comprises the steps of contacting (a) a magnesium dialkoxide soluble in an inert solvent, (b) a silicon compound having the hydrogen-silicon bond, and (c) an electron donor compound with one another in the presence of an inert solvent, and contacting the resulting reaction product with (d) a titanium compound.

Process for preparing catalyst component for polymerization of olefins

A process for polymerizing one or more alpha-olefins in the presence of a catalyst system comprising (A) a solid titanium containing catalyst component said component prepared by contacting a magnesium alkoxide, a halogenated hydrocarbon, an electron donor and a titanium compound with one another, and (B) an organoaluminum cocatalyst. In preferred embodiments, the magnesium alkoxide is first contacted with a magnesium halide. The solid titanium containing compound can be treated with an organoaluminum compound.

A cocatalyst employed with a titanium-containing catalyst, said titanium-containing catalyst comprising titanium atoms, halogen atoms, and an electron donor compound, said cocatalyst comprising

A titanium halide containing catalyst component for polymerization of olefins which is prepared by reacting a magnesium hydrocarbyloxide with a silicon compound having at least one hydrogen-silicon bond, contacting the reaction product with an electron donor compound, contacting the resulting contact product two or more times with a titanium halide and between one of the multiple titanium halide contacts, contacting the titanium halide contacted solid with a halide of an element selected from the group consisting of elements of Groups IIIa, IVa, and Va of the Periodic Table of elements.

Catalyst component for polymerization of olefins (P-1026)

A solid titanium containing catalyst component for use in olefin polymerization said component prepared by contacting a magnesium alkoxide, a halogenated hydrocarbon, an electron donor and a titanium compound with one another. In preferred embodiments, the magnesium alkoxide is first contacted with a magnesium halide. The solid titanium containing compound can be treated with an organoaluminum compound.

Catalyst component for polymerization of olefins P-998

A catalyst component for the polymerization of olefins and particularly ethylene which is prepared by contacting a contact product of a magnesium alkoxide, a halogenated hydrocarbon, a halogenated silane with a titanium compound. The catalyst component in combination with a organoaluminium cocatalyst is useful for the polymerization of ethylene having a high melt index.

A titanium halide containing catalyst component for polymerization of olefins which is prepared by reacting a magnesium hydrocarbyloxide with a silicon compound having a hydrogen-silicon bond, contacting the reaction product with an electron donor compound, contacting the resulting contact product two or more times with a titanium halide and between one of the multiple titanium halide contacts, contacting the titanium halide contacted solid with a halogenated hydrocarbon.

A titanium-containing catalyst component for polymerization of olefins which is prepared by reacting a magnesium hydrocarbyl oxide with a silicon compound having a hydrogen-silicon bond, contacting the reaction product with an electron donor compound, contacting the resulting contact product with an organoaluminum compound and further with a titanium compound.

A process for polymerizing olefins in the presence of a catalyst composed of:

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Saitama, Japan

Naomi Inaba