Repsol Quimica, S.a.

Respol Quimica, S.a.

Respsol Quimica S.a.

Jose Sancho Royo

Gerardo Hidalgo Llinas

Luis Mendez Llatas

Antonio Munoz-Escalona Lafuente

Wilfried Michiels Vega

Pilar Lafuente Cañas

Antonio Mu&ntilde;oz-Escalona Lafuente

Bego&ntilde;a Pe&ntilde;a Garcia

Antonio Muñoz-Escalona Lafuente

Begona Pena Garcia

Carlos Martin Marcos

Antonio Munoz-Escalona

Carlos Mart&iacute;n Marcos

Begoña Peña Garcia

Begoña Peña García

Carlos Martín Marcos

Pilar Lafuente Ca&ntilde;as

Francisca Martínez Núñez

Gerardo Hidalgo Llinás

Antonio Mu{overscore (n)}oz-Escalona

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

Catalysts systems for the polymerization and copolymerization of alpha-olefins

Catalytic systems particularly suitable for the polymerization of &agr;-olefins containing from two to 20 carbon atoms, as well as for the copolymerization of ethylene with &agr;-olefins containing from three to 20 carbon atoms, dienes, and cycloalkenes in processes wherein the catalyst is suspended in a solvent, in processes in gas phase, as well as in mass polymerization processes at high temperatures and pressures, are disclosed. The catalytic system is a mixture of a catalyst component A and a co-catalyst component B. The catalyst component A is formed by a functionalized inorganic porous oxide, by an organoaluminium compound and by an organometallic compound of a metal of the groups 3, 4, 5, or 6 of the periodic table. Functionalization of the inorganic oxide is by introduction of functional groups to be used to strongly fix the organoaluminium compound and the organometallic compound. The co-catalyst component B, which is used for the activation of the catalyst, is formed of organoaluminium compounds, perfluorinated derivatives of boron, or a mixture thereof.

Process for obtaining polyolefins

It is shown metallocenes with functionalized bridge of formula

Heterogeneous catalyst components for olefins polymerization, preparation process and use thereof

Catalytic systems particularly suitable for the polymerization of .alpha.-olefins containing from two to 20 carbon atoms, as well as for the copolymerization of ethylene with .alpha.-olefins containing from three to 20 carbon atoms, dienes, and cycloalkenes in processes wherein the catalyst is suspended in a solvent, in processes in gas phase, as well as in mass polymerization processes at high temperatures and pressures, are disclosed. The catalytic system is a mixture of a catalyst component A and a co-catalyst component B. The catalyst component A is formed by a functionalized inorganic porous oxide, by an organoaluminium compound and by an organometallic compound of a metal of the groups 3, 4, 5, or 6 of the periodic table. Functionalization of the inorganic oxide is by introduction of functional groups to be used to strongly fix the organoaluminium compound and the organometallic compound. The co-catalyst component B, which is used for the activation of the catalyst, is formed of organoaluminium compounds, perfluorinated derivatives of boron, or a mixture thereof.

Process for obtaining a catalytic system for the polymerization of       .

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

Catalyst component for the polymerization of alpha-olefins of general formula (I) ##STR1## wherein: M is a transition metal of groups 3, 4-10, lanthanide or actinide of the periodic table of the elements; A is a ring with delocalized .pi. electrons, L is a neutral Lewis base; m is an integer whose value can be: 0 or 1; E is selected from the group comprising: BR.sup.II, CR.sup.II.sub.2, SiR.sup.II.sub.2, GeR.sup.II.sub.2 ; Hal is selected from the group comprising iodine, bromine or chlorine; R.sup.III has the same meaning of R.sup.II ; Si is a silicon atom; D is selected from the group comprising: O, S, NR.sup.IV, PR.sup.IV, OR.sup.IV, SR.sup.IV, NR.sup.IV.sub.2, PR.sup.IV.sub.2 ; each X group equal to or different from each other is selected from the group comprising hydrogen, halide, alkyl, cycloalkyl, aryl, alkenyl, arylallyl, arylalkenyl or alkylaryl with 1 to 20 carbon atoms, n is a number whose value can be: 0, 1, 2 or 3, in order to full the remaining valences of metal M. It is also described a method for supporting the compound of formula I.

Organometallic catalysts for the polymerization and copolymerization of

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

Jose Sancho Royo