Abstract: A process comprising reacting at least one polymer component, with at least one reactive component, to produce a composition, the polymer being a metallocene polymerized ethylene (co)polymer, and the reactive component being a crosslinking agent.

Abstract: A number of process steps are provided that can be combined to produce bridged cyclopentadienyl-fluorenyl metallocenes. The process steps include production of a cyclopentadiene compound from dicyclopentadiene; production and recovery of a fulvene compound using the cyclopentadiene compound; production of a raw metallocene product using the fulvene compound; and recovery of the pure metallocene from the raw product.

Abstract: The present invention provides a new type of supported metallocene catalyst system. In one aspect of the invention, an inorganic oxide support, such as silica, is impregnated with a Group XIII element such as B, Al or GA. The support is then contacted with a liquid catalyst system prepared by combining in a liquid an organo aluminoxane and a metallocene having two cyclopetadienyl-type ligands selected from substituted or unsubstituted cyclopentadienyl, indenyl, benzoindenyl, tetrahdroindenyl, benzofluorenyl, octahydrofluorenyl, and fluorenyl ligands to form a supported metallocene catalyst system. In preferred embodiments the process further includes conducting prepolymerization of at least one olefin in the presence of the supported metallocene catalyst system to produce a prepolymerized metallocene catalyst system. The prepolymerized metallocene catalyst system prepared in this manner yields substantially increased activity for the polymerization of olefins.

Abstract: A process to produce a monovinylaromatic/monoolefin polymer is provided. Said monovinylaromatic/monoolefin polymer is provided.

Abstract: A process to produce a monovinylaromatic polymer is provided. Said monovinylaromatic polymer is provided.

Abstract: Methods are disclosed for preparing a highly active solid metallocene-containing catalyst system and its use in the polymerization of olefins. The catalyst system is prepared by creating a catalyst system solution by combining an aluminoxane with a metallocene having a substituent which has olefinic unsaturation in a suitable liquid to form a liquid catalyst system, conducting prepolymerization of an olefin in the liquid catalyst system, and separating the resulting solid metallocene-containing catalyst system from the reaction mixture. Also polymerization of olefins using the inventive solid catalyst system is disclosed.

Abstract: A high clarity film containing three layers wherein the polymer of each outer layer is the same or different polyethylene selected from polyethylenes having a density of at least 0.925 g/cc, and a molecular weight distribution of less than 4, and being further characterized by being substantially free of branches having 6 or more carbon atoms, polyethylenes of the outer layers optionally containing a fluoroelastomer.

Abstract: A process is disclosed for the particle form polymerization of olefins. The process employs a titanium-containing having hydrocarbon soluble titanium components. The resulting catalyst is pretreated with an organometallic reducing agent prior to the introduction of the catalyst into the polymerization zone to give a catalyst which can be used satisfactorily in a loop reactor with lower levels of cocatalyst.

Abstract: Metallocene having two cyclic dienyl groups connected by a single carbon having an aryl substituent and a terminally unsaturated hydrocarbyl substituent, olefin polymerization catalyst systems prepared therefrom, and the use of such catalyst systems are disclosed.

Abstract: Fluorenyl-containing metallocenes are disclosed along with methods for making the metallocenes. Also disclosed are methods for using the metallocenes as polymerization catalysts. In addition, polymers resulting from such polymerizations are disclosed.

Abstract: A prepolymerized solid catalyst is prepared by reacting a suitable support base with an organoaluminum compound and then reacting that product with an activity promoting amount of water and then reacting the resulting solid cocatalyst with a metallocene and then subjecting that product to prepolymerization in the presence of hydrogen. The prepolymerized solid catalyst is useful in the polymerization of olefins.

Abstract: The present invention provides polymers of ethylene having ethyl branches, a narrow molecular weight distribution, no substantial amount of branches longer than any comonomer employed in the polymerization, and an unusually low branching to density ratio. In one embodiment the polyethylenes are substantially free of any branches having more than 2 carbon atoms, i.e. ethyl branches, and the molar percent of ethyl branches is substantially the same for molecular fractions across the molecular weight distribution. In another embodiment the polyethylenes have other branches having 3 or more carbons and the molar percent of the ethyl branches is substantially the same for molecular fractions across the molecular weight distribution.

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: Processes are provided that produce organo-aluminoxane compositions. Said processes comprise: desiccating a first mixture, where said first mixture comprises organo-aluminoxane molecules intermixed with a solvent, to produce a first composition, where said first composition comprises organo-aluminoxane molecules; mixing said first composition with a solvent to produce a second mixture, where said second mixture comprises organo-aluminoxane molecules and said solvent; contacting said second mixture with a insolublization agent to produce said organo-aluminoxane compositions. A polymerization process using a catalyst that comprises an organo-aluminoxane composition is also provided.

Abstract: Novel Si--N--Si bridged metallocenes of the formula [L--Si--Me.sub.2 NRSiMe.sub.2 L]MX.sub.2 wherein L is a C.sub.5 H.sub.4, C.sub.9 H.sub.6, or C.sub.13 H.sub.8 radical, R is alkyl and M is zirconium, titanium, or hafnium, and X is selected from the group consisting of chlorine, bromine, iodine, methyl and diethyl amine, are provided via a novel amine elimination reaction followed by cyclization of the ligand sphere of the amino silyl functionalized metallocene dichloride complex. Further, there is provided novel unbridged metallocene precursors of the formula [RNH--SiMe.sub.2 --L].sub.2 MX.sub.2. Such Si--N--Si bridged metallocenes in combination with an organometallic compound of metals of Group IA, IIA, and IIB form a catalyst system which is highly active in the polymerization of alpha-olefins.

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: Olefins are polymerized with a catalyst system resulting from the combination of unbridged substituted indenyl cyclopentadienyl metallocenes and an organoaluminum cocatalyst.

Abstract: A solid cocatalyst is prepared by combining (1) a first material capable of affixing an organoaluminum compound with (2) an organic liquid and then adding an organoaluminum compound and then contacting that product with water dispersed in an inert gas. Further catalyst compositions prepared from that cocatalyst and the use of such catalyst compositions to polymerize olefins is disclosed.

Abstract: Bridged fluorenyl/indenyl metallocenes having substituents at the 3 position of the indenyl and the use thereof in the polymerization of olefins are disclosed. Also a new method for preparing bridged fluorenyl/indenyl ligands wherein the indenyl has a substituent in the 3 position and the preparation of metallocenes with such ligands.