Abstract: The invention relates to a composition producible by mixing an aromatic amine or several aromatic amines of the general formula I, 1

Abstract: The present invention relates to a process for the preparation of rubber-like ethylene/&agr;-olefin copolymers and ethylene/&agr;-olefin/non-conjugate diene terpolymers using a metallocene as catalyst, which process is characterized in that the metallocene used is a compound of the general formula (I) 1

Abstract: The invention relates to novel &pgr;-complex compounds of transitional metals. The novel &pgr;-complex compounds are suitable for use as catalysts for the (co)polymerization of olefins, cyclo-olefins, alkynes, diolefins, vinyl ester and vinyl aromatics.

Abstract: This invention relates to a catalyst system containing bisiminopyridyl complexes of cobalt and/or iron with bulky substituents on the bisiminopyridyl ligand, to a method for the polymerization of &agr;-olefins, particularly ethylene, and to the use of the polyolefins which can be produced by said method for the production of moldings of all types.

Abstract: The present invention concerns a method for the copolymerization of conjugated diolefins and vinyl-aromatic monomers in the presence of rare-earth catalysts and the use of the copolymers in rubber mixtures for tire applications.

Abstract: This invention relates to a process for isomerizing 1,4-dichloro-2-butene to yield 3,4-dichloro-1-butene or 3,4-dichloro-1-butene to yield 1,4-dichloro-2-butene, characterized in that the catalyst used comprises a compound of the formula CpFe(CO)2X, wherein Cp denotes a cyclopentadienyl derivative of the general formula (I), wherein R1 to R5 mutually independently denote H, C1 to C12 alkyl, C5 to C8 cycloalkyl, which may in turn bear C1 to C12 alkyl groups, C6 to C14 aryl, alkylaryl, arylalkyl, wherein two adjacent residues may together form saturated or unsaturated C3 to C14 cycles, or denote—SiR6R7R8, wherein R6 to R7 may mutually independently mean C1 to C4 alkyl, C5 to C8 cycloalkyl or C6 to C14 aryl, and X denotes F, Cl, Br.

Abstract: This invention relates to a process for the free-radical polymerization of monomers in gas phase or suspension processes using a supported, polymerization-initiating system comprising a) one or more polymerization-initiating components which initiate and start free-radical polymerization, b) a support, onto which said polymerization-initiating component is applied, and c) optionally, one or more modifiers which have an influence upon reaction kinetics and/or product properties.

Abstract: Polymeric ligands, polymeric metallocenes, and processes for preparing same are provided. The process for preparing polymeric metallocenes comprises reacting a polymeric ligand, a transition metal compound, and an alkali metal compound. In one embodiment, a process for preparing polymeric ligands comprises reacting at least one bridged cyclopentadienyl-type monomer and an initiator under polymerization conditions. In another embodiment, a polymeric ligand is represented by the formula [Q′]n, wherein Q′ is a unit containing at least one bridged cyclopentadienyl-type group and wherein n is 1-5000.

Abstract: This invention relates to a composition producible by mixing an iron carbonyl complex selected from among the group Fe(CO)5, Fe2(CO)9, Fe3(CO)12 or of anhydrous iron salts FemXn, wherein m=1 or 2 and n=2 or 3 and X=halide, carbonate, nitrate, nitrite, sulfide, sulfate, phosphate, rhodanide, acetate, acetylacetonate or a mixture of two or three of these compounds with a cyclopentadiene derivative of the general formula I, 1

Abstract: This invention relates to a process for isomerizing 1,4-dichloro-2-butene to yield 3,4-dichloro-1-butene or 3,4-dichloro-1-butene to yield 1,4-dichloro-2-butene, characterized in that the catalyst used comprises a compound of the formula CpFe(CO)2X, wherein Cp denotes a cyclopentadienyl derivative of the general formula (I), 1

Abstract: The invention relates to a process for the preparation of supported polymerization catalyst systems comprising the steps of: a) dissolving at least one different transition metal complex in a mixture of at least two different solvents having different boiling points to form a solution, b) contacting said solution with at least one different support material, the volume of the solution being sufficient to form a slurry with the support material, the volume of the higher-boiling solvent being less than or equal to the total pore volume of the support, c) removing more than 90% of the solvent boiling at the lower temperature, and d) adding at least one co-catalyst.

Abstract: A catalyst system comprising an organoaluminoxane cocatalyst and a polymeric fluorenyl-containing metallocene prepared from a polymer resulting from the polymerization of a 2-vinylfluorene compound or the alkylation of a fluorene compound.

Abstract: Polymeric ligands, polymeric metallocenes, and processes for preparing same are provided. The process for preparing polymeric metallocenes comprises reacting a polymeric ligand, a transition metal compound, and an alkali metal compound. In one embodiment, a process for preparing polymeric ligands comprises reacting at least one bridged cyclopentadienyl-type monomer and an initiator under polymerization conditions. In another embodiment, a polymeric ligand is represented by the formula [Q'].sub.n, wherein Q' is a unit containing at least one bridged cyclopentadienyl-type group and wherein n is 1-5000. In another embodiment, a polymeric metallocene is represented by the formula [Q"MX.sub.m ].sub.

Abstract: A polymerization process comprising contacting at least one olefin under polymerization conditions with a catalyst composition produced by combining an organoaluminoxane cocatalyst and a polymeric metallocene catalyst prepared by (1) forming a fluorine-containing polymer by (a) polymerizing a 2-vinyl fluorenyl compound or (b) polymerizing a fluorenyl compound by reacting it with chloro methyl methyl ether in the presence of zinc dichloride or aluminum trichloride; (2) reacting the fluorenyl-containing polymer with an alkali metal compound; and (3) reacting the product of step (2) with a transition metal-containing compound.

Abstract: Processes to prepare polymeric metallocene are provided. Said processes comprise reacting a polymeric ligand, an alkali metal compound, and a transition metal-containing compound to produce said polymeric metallocene. therefor.

Abstract: A catalyst system and process for polymerizing olefins employing a cocatalyst and specific ethylene bridged fluorenyl-containing metallocenes having substituents which result in high yields of polyethylene and/or high molecular weight polyethylene.