Repsol Quimica, S.a.

Pilar Lafuente Cañas

Jose Sancho Royo

Luis Mendez Llatas

Gerardo Hidalgo Llinas

Antonio Munoz-Escalona Lafuente

Wilfried Michiels Vega

Antonio Muñoz-Escalona Lafuente

Carlos Martin Marcos

Francisca Martínez Núñez

Gerardo Hidalgo Llinás

Carlos Martín Marcos

Begoña Peña García

Begoña Peña Garcia

Catalyst component for the polymerization of alpha-olefins in solution, in suspension, in gas phase at low and high pressure and temperature or in mass at high pressures and high or low temperatures, characterized in that is defined by general formulas I or II wherein:

Catalytic systems for the polimerization and copolimerization of alpha-olefins

Heterogeneous catalytic compositions obtained by reacting a porous inorganic support with an alumoxane and subsequently supporting at least one metallocene compound thereon. A process for polymerization of &#x3b1;-olefins in a slurry or in a gas phase, the process catalyzed by such heterogeneous catalytic compositions.

Catalytic systems for the polymerization and copolymerization of alpha-olefins

A catalyst comprising a cocatalyst and a catalyst component obtained by contacting a silicon-containing metallocene compound with an inorganic support to chemically bond the metallocene compound to the inorganic support, wherein the silicon-containing metallocene compound has a formula (I): ##STR1## wherein: M is a metal selected from [the group consisting of] group 4, 5, or 6 of the periodic table;

Hetergeneous metallocene catalysts and use thereof in olefin

This invention is related to a method for the preparation of heterogeneous catalysts, useful for the production of poliolefins. The method is characterized because said catalysts are obtained by supporting onto solids soluble metallocenes possessing one or more functional groups. Said functional groups are characterized because they can react with other reactive groups on the surface of the solids. The reactive groups on the solids can be part of said solids or incorporated by means of chemical modification. These catalyst systems are especially appropiated for the polymerization of one or several 1-olefins having from 2 to 20 carbon atoms in their chain. Further, they are especially appropiated for the copolymerization of ethylene with 1-olefins having from 3 to 20 carbon atoms in their chains. These polymerization processes can be carried out in gas-phase slurry or solution, at high temperatures and pressures.

Heterogeneous metallocene catalysts and use thereof in olefin

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Madrid, Spain

Pilar Lafuente Cañas