Abstract: 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: R, equal to or different from each other, is hydrogen or a radical which contains from 1 to 20 carbon atoms; this group optionally contains heteroatoms of groups 14 to 16 of the periodic table of the elements and boron; at least one group R contains a group OSiR?3, Q is selected from a group comprising: boron or an element from groups 14 or 16 of the periodic table; m value can change from 1 to 4 and it preferably is 1 or 2; L, equal to or different from each other, is a cyclic organic group united to M through a ? bond, or it is an atom from groups 15 or 16 of the periodic table; L1 and L2, equal to or different from each other, have the same meaning of L; M is a metal from groups 3, 4, 10 of the periodic table, lanthanide or actinide.

Abstract: 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 ?-olefins in a slurry or in a gas phase, the process catalyzed by such heterogeneous catalytic compositions.

Abstract: Catalyst component for the polymerization of alpha-olefins of general formula (I) wherein: M is a transition metal of groups 3, 4-10 of the periodic table of the elements, Each X group can be equal or different and it is hydride, halogen, alkyl, cycloalkyl, aryl, alkenyl, arylalkyl, arylalkenyl or alkylaryl with 1 to 20 carbon atoms, linear or branched. L is a neutral Lewis base A is a ring with delocalized &pgr; electrons, that directly coordinates to the transition metal M. Each E group can be equal to or different from each other and it is BRIII, CRIV2, SiRIII2, GeRIII2; at least one E is SiRIII2. RII is hydrogen, alkyl, cycloalkyl, aryl, alkenyl, arylalkyl, arylalkenyl or alkylaryl from 1 to 20 carbon atoms, linear or branched, whose hydrogens can be substituted by SiR3, GeR3, OR, NR2, OSiR3 or any combination of thereof. It can moreover form a condensed ring through another bond with E.

Abstract: 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, characterised in that is defined by general formulas I or II 1

Abstract: The invention relates to heterogeneous catalytic systems obtainable by reacting a porous inorganic support with an alumoxane and subsequently supporting at least one metallocene compound thereon, characterized in that the metallocene compound is defined by the following general formulas: 1

Abstract: The process is characterized by the use of catalyst systems consisting of a single metallocene catalyst activated with mixtures of at least 2 co-catalysts. The co-catalysts are aluminium alkyls, aluminoxanes or boron compounds. Different active centers are produced in the catalyst through the use of these mixed co-catalyst systems, each having different rates of initiation and completion of the polymerization reaction, which give rise to polyolefins with different molecular weights, resulting in products with broad bimodal or multimodal molecular weight distributions and the incorporation of co-monomer can be controlled by appropriate selection of the metallocene and use of combinations of different types of co-catalysts, as well as by varying the reactor pressure, the reaction temperature and the molar ratios between the various components of the catalyst system.

Abstract: Heterogeneous catalytic component obtainable by reacting a porous inorganic support with a metallocene compound characterized in that the metallocene compound is defined by the following general formulas:

Abstract: The present invention relates to a bidenitate diimino-complex of nickel or palladium containing at least one group OSi(R)3 wherein each R, equal to or different from each other, is selected from the group consisting of: C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C2-C20 alkenyl, C7-C20 arylalkyl, C7-C20 alkylaryl, C8-C20 arylalkenyl, and C8-C20 alkenylaryl, linear or branched, preferably each R is independently methyl, ethyl or propyl. The present invention also relates to the process for the preparation of bidentate diimino complexes of nickel and palladium as well as the process for their use in olefin polymerization.

Abstract: The present invention is related to diimino compounds of formulae (I) R2—N═C(R1)(R3)nC(R1)═N—R2 and (II) (R1)2C═N—(CR24)m—N═C(R1)2 functionalized with at least one siloxy group. Said diimino compounds are useful for obtaining a solid catalyst component for polymerizing olefins wherein the diimino compound of formulae (I) or (II) is bonded to a porous inorganic support and to a transition metal selected from groups 8, 9 and 10 of the periodic table. This invention also relates to a process for preparing said diimino compounds of formulae (I) or (II), to a process for obtaining said solid catalyst component comprising the combination of the diimino compound and a porous inorganic support. Further, the invention also relates to the use of said solid catalyst in combination with a cocatalyst to polirnenrze olefins.

Abstract: The present invention is related to diimino compounds of formulae (I) R2—N═C(R1)(R3)nC(R1)═N—R2 and (II) (R1)2C═N—(CR24)m—N═C(R1)2 functionalized with at least one siloxy group. Said diimino compounds are useful for obtaining a solid catalyst component for polymerizing olefins wherein the diimino compound of formulae (I) or (II) is bonded to a porous inorganic support and to a transition metal selected from groups 8, 9 and 10 of the periodic table. This invention also relates to a process for preparing said diimino compounds of formulae (I) or (II), to a process for obtaining said solid catalyst component comprising the combination of the diimino compound and a porous inorganic support. Further, the invention also relates to the use of said solid catalyst in combination with a cocatalyst to polimerize olefins.

Abstract: It is shown metallocenes with functionalized bridge of formula 1

Abstract: The present invention relates to a bidenitate diimino-complex of nickel or palladium containing at least one group OSi(R)3 wherein each R, equal to or different from each other, is selected from the group consisting of: C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C2-C20 alkenyl, C7-C20 arylalkyl, C7-C20 alkylaryl, C8-C20 arylalkenyl, and C8-C20 alkenylaryl, linear or branched, preferably each R is independently methyl, ethyl or propyl.

Abstract: It is shown metallocenes with functionalized bridge of formula wherein M represents a transition metal of 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 which has leaving groups. These metallocene compounds are used as catalyst precursors for the homopolymerization and copolymerization of olefins. It is also shown methods for supporting these metallocenes on inorganic solids in order to obtain solid catalyst systems for olefins polymerization processes in a heterogeneous phase.

Abstract: 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.

Abstract: 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;each X is independently selected from the group consisting of hydrogen, halogen, C.sub.1 -C.sub.10 alkyl, C.sub.1 -C.sub.10 alkoxy, C.sub.6 -C.sub.10 aryl, C.sub.6 -C.sub.10 aryloxy, C.sub.2 -C.sub.10 alkenyl, C.sub.7 -C.sub.40 arylalkyl, C.sub.7 -C.sub.40 alkylaryl, and C.sub.8 -C.sub.40 arylalkenyl;A.sub.1 and A.sub.2 are independently selected from the group consisting of cyclopentadienyl, substituted cyclopentadienyl, indenyl, fluorenyl, substituted indenyl, and substituted fluorenyl, wherein the substituents are independently C.sub.1 -C.sub.10 linear or branched alkyl, C.sub.5 -C.sub.

Abstract: The present invention relates to nietallocene compounds characterized by the following formulas:(LR.sub.k).sub.z [LR.sub.k-f (R.sup.I OH).sub.f ].sub.x MX.sub.yI ##STR1## wherein: L, equal to or different from each other, is selected from the group comprising: cyclopentadienyl, indenyl, tetrahydroindenyl, fluorenyl, octahydrofluorenyl or benzoindenyl; each R is independently selected from hydrogen, C.sub.1 -C.sub.20 alkyl, C.sub.3 -C.sub.20 cycloalkyl, C.sub.6 -C.sub.20 aryl, C.sub.3 -C.sub.20 alkenyl C.sub.7 -C.sub.20 arylalkyl, C.sub.7 -C.sub.20 alkylaryl, C.sub.8 -C.sub.20 arylalkenyl, linear or branched, optionally substituted by 1 to 10 halogen atoms, or a group SiR.sup.II.sub.3 ; each R.sup.I equal to or different from each other, is a group SiR.sup.II.sub.

Abstract: 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.

Abstract: 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.

Abstract: 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.