Repsol Quimica, S.a.

Respol Quimica, S.a.

Antonio Munoz-Escalona Lafuente

Jose Sancho Royo

Luis Mendez Llatas

Gerardo Hidalgo Llinas

Wilfried Michiels Vega

Carlos Martin Marcos

Begona Pena Garcia

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

The present invention relates to nietallocene compounds characterized by the following formulas:

Functionalized metallocene compounds, synthesis process and use thereof

It is shown metallocences with functionalized bridge of formula ##STR1## wherein M represents a transition metal from groups 3, 4, 5 or 6, L represents cyclopentadienyl-type ligands, Y represents a halogen and which can own one or various bridges between unities L. At least one of these bridges is functionalized through a group constituted by the union between a halogen atom and a silicon, germanium or tin atom. It is also shown a method for the synthesis of these metallocene compounds starting from the corresponding metallic halure and a precursor of the ligand with leaving groups. The functionalization shown by these compounds give them a peculiar reactivity that can be used for the formation of new metallocene derivatives, including bi- or poly-metallocene compounds. This reactivity is shown in the present document through examples with alcohol-type substrates.

Metallocene compounds, synthesis process and use thereof

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.

Growing community of inventors

Pozuelo de Alarcon, Spain

Antonio Munoz-Escalona Lafuente