Abstract: Aluminoxane compositions derived from aluminoxane source, halogen source, and Lewis base are provided. Such compositions are useful for activating catalysts for olefin polymerization.

Abstract: Compositions useful for activating catalysts for olefin polymerization, and methods for making same, are provided. Such compositions can be derived from at least: an organoaluminum compound, a carrier, an oxygen source, and, optionally, a Lewis base.

Abstract: A composition useful for activating catalysts for olefin polymerization is provided. The composition is derived from at least: carrier; organoaluminoxy compound; component having at least one electron withdrawing group and at least one active proton; and Lewis base. Alternatively, the composition is derived from at least: carrier; organoaluminoxy compound; component having at least one electron withdrawing group and at least one active proton; and ionic compound having at least one active proton. Alternatively, the composition is derived from at least: carrier; organoaluminoxy compound; component having at least one electron donating group and at least one active proton; and, optionally, Lewis base.

Abstract: Novel haloaluminoxane compositions have been formed. The halogen is fluorine, chlorine, and/or bromine, and the amount of halogen atoms present in said composition is in the range of about 0.5 mole % to about 15 mole % relative to aluminum atoms. Processes for producing haloaluminoxane compositions are also provided.

Abstract: Novel haloaluminoxane compositions have been formed. The halogen is fluorine, chlorine, and/or bromine, and the amount of halogen atoms present in said composition is in the range of about 0.5 mole % to about 15 mole % relative to aluminum atoms.

Abstract: Described are solid olefin polymerization catalysts that have, inter alia, very high productivities (at least 18,000 grams of polyethylene per gram of catalyst in one hour) as shown by a standard test procedure for measuring this property or characteristic. Such particulate catalysts can be prepared by prepolymerizing vinylolefin with a Group 4 metallocene-aluminoxane solution, using proportions of vinylolefin (most preferably, ethylene) in the range of about 150 to about 1500, and preferably in the range of about 175 to about 1000, moles per mole of Group 4 metallocene used in forming the solution. The atom ratio of aluminum to Group 4 metal in the solution is in the range of about 150:1 to about 1500:1, and preferably in the range of about 175:1 to about 1000:1. In addition, the Group 4 metallocene ingredient used in forming these highly productive catalysts has in its molecular structure at least one polymerizable olefinic substituent.

Abstract: Described are solid olefin polymerization catalysts that have, inter alia, very high productivities as shown by a standard test procedure for measuring this property or characteristic, and excellent morphology. Such particulate catalysts can be prepared by prepolymerizing a controlled amount of vinylolefin with a Group 4 metallocene-alurinnoxane solution, in which the original metallocene ingredient used in the process has in its molecular structure at least one polymerizable olefinic substituent. These particulate catalysts do not contain, and thus are not produced in the presence of, a preformed support such as an inorganic compound (silica or etc.) or a preformed particulate polymeric support.

Abstract: The process features concurrent feeds into the liquid phase of a prepolymerization reaction mixture. These feeds are: a) separate continuous or substantially continuous feeds of (i) a polymerizable vinylolefin, and (ii) a solution in an organic liquid solvent of a metallocene and an aluminoxane and/or metallocene-aluminoxane reaction product; or b) separate continuous or substantially continuous feeds of (i) a polymerizable vinylolefin, (iii) a metallocene optionally in an organic liquid solvent or diluent, and (iv) an aluminoxane optionally in an organic liquid solvent or diluent; or c) separate continuous or substantially continuous feeds of (i) and (ii) and at least one of (iii) and (iv). Particles of catalytically-active, prepolymerized, self-supported olefin polymerization catalyst composition are formed in the reaction medium. The metallocene used as the feed or in making up the feed has at least one polymerizable olefinic substituent in the molecule.

Abstract: Described are solid olefin polymerization catalysts that have, inter alia, very high productivities as shown by a standard test procedure for measuring this property or characteristic, and excellent morphology. Such particulate catalysts can be prepared by prepolymerizing a controlled amount of vinylolefin with a Group 4 metallocene-aluminoxane solution, in which the original metallocene ingredient used in the process has in its molecular structure at least one polymerizable olefinic substituent. These particulate catalysts do not contain, and thus are not produced in the presence of, a preformed support such as an inorganic compound (silica or etc.) or a preformed particulate polymeric support.

Abstract: Described are solid olefin polymerization catalysts that have, inter alia, very high productivities (at least 18,000 grams of polyethylene per gram of catalyst in one hour) as shown by a standard test procedure for measuring this property or characteristic. Such particulate catalysts can be prepared by prepolymerizing vinylolefin with a Group 4 metallocene-aluminoxane solution, using proportions of vinylolefin (most preferably, ethylene) in the range of about 150 to about 1500, and preferably in the range of about 175 to about 1000, moles per mole of Group 4 metallocene used in forming the solution. The atom ratio of aluminum to Group 4 metal in the solution is in the range of about 150:1 to about 1500:1, and preferably in the range of about 175:1 to about 1000:1. In addition, the Group 4 metallocene ingredient used in forming these highly productive catalysts has in its molecular structure at least one polymerizable olefinic substituent.

Abstract: Described are solid olefin polymerization catalysts that have, inter alia, very high productivities as shown by a standard test procedure for measuring this property or characteristic, and excellent morphology. Such particulate catalysts can be prepared by prepolymerizing a controlled amount of vinylolefin with a Group 4 metallocene-aluminoxane solution, in which the original metallocene ingredient used in the process has in its molecular structure at least one polymerizable olefinic substituent. These particulate catalysts do not contain, and thus are not produced in the presence of, a preformed support such as an inorganic compound (silica or etc.) or a preformed particulate polymeric support.

Abstract: Described are solid olefin polymerization catalysts that have, inter alia, very high productivities (at least 18,000 grams of polyethylene per gram of catalyst in one hour) as shown by a standard test procedure for measuring this property or characteristic. Such particulate catalysts can be prepared by prepolymerizing &agr;-olefin with a Group 4 metallocene-aluminoxane solution, using proportions of &agr;-olefin (most preferably, ethylene) in the range of about 150 to about 1500, and preferably in the range of about 175 to about 1000, moles per mole of Group 4 metallocene used in forming the solution. The atom ratio of aluminum to Group 4 metal in the solution is in the range of about 150:1 to about 1500:1, and preferably in the range of about 175:1 to about 1000:1. In addition, the Group 4 metallocene ingredient used in forming these highly productive catalysts has in its molecular structure at least one polymerizable olefinic substituent.

Abstract: Described are solid olefin polymerization catalysts that have, inter alia, very high productivities (at least 18,000 grams of polyethylene per gram of catalyst in one hour) as shown by a standard test procedure for measuring this property or characteristic. Such particulate catalysts can be prepared by prepolymerizing vinylolefin with a Group 4 metallocene-aluminoxane solution, using proportions of vinylolefin (most preferably, ethylene) in the range of about 150 to about 1500, and preferably in the range of about 175 to about 1000, moles per mole of Group 4 metallocene used in forming the solution. The atom ratio of aluminum to Group 4 metal in the solution is in the range of about 150:1 to about 1500:1, and preferably in the range of about 175:1 to about 1000:1. In addition, the Group 4 metallocene ingredient used in forming these highly productive catalysts has in its molecular structure at least one polymerizable olefinic substituent.

Abstract: Fluoroaryl Grignard reagents are produced from a hydrocarbyl Grignard reagent and fluoroaromatic compounds via separate additions of different fluoroaromatic compounds, such that the conversion of hydrocarbyl Grignard reagent to the desired fluoroaryl Grignard reagent is essentially complete, and thus the reaction product is free or essentially free of agents that may negatively affect subsequent reactions. The fluoroaryl Grignard reagents may be further reacted with boron trihalides in order to obtain tris(fluoroaryl)boranes or tetrakis(fluoroaryl)borates.

Abstract: Perfluoroaryl Grignard reagents are produced from a hydrocarbyl Grignard reagent and polyhaloaromatic compounds via separate additions of different polyhaloaromatic compounds, such that the conversion of hydrocarbyl Grignard reagent to the desired perfluoroaryl Grignard reagent is essentially complete, and thus the reaction product is free or essentially free of agents that may negatively affect subsequent reactions. The perfluoroaryl Grignard reagents may be further reacted with boron trihalides in order to obtain tris(perfluoroaryl)boranes or tetrakis(perfluoroaryl)borates.

Abstract: A process is described which comprises heating a methylalumoxane solution in an aromatic hydrocarbon solvent at a temperature of at least 35.degree. C. for at least 0.5 hour in an inert, dry atmosphere such that the resulting heat-treated composition provides, in a supported metallocene catalyst produced using the heat-treated composition, increased activity as compared to the same supported metallocene catalyst produced in the same way except for using a portion of the methylalumoxane solution that has not been heat-treated. Before the heating the methylalumoxane of the solution contains from about 5 to about 35 mole percent unreacted trimethylaluminum, and was formed by partial hydrolysis of trimethylaluminum with free water in an organic solvent.

Abstract: One aspect of the invention is a process for purifying a pentafluorophenyl boron compound from a crude mixture comprised of the pentafluorophenyl boron compound and impurities, the impurities at least comprised of an ether and water, the process comprising: (a) mixing the crude mixture with an azeotropic organic solvent which (i) is capable of azeotrope formation with the water and (ii) has a boiling point above the boiling point of the ether; (b) distilling the resulting solution to remove at least a portion of the impurities; and (c) cooling the distilled solution so that a precipitate comprised of the pentafluorophenyl boron compound is formed. Processes are also described for producing pentafluorophenyl boron compounds which are particularly pure, dry and fine.

Abstract: A slurry is formed from an auxiliary catalyst (e.g., an aluminoxane or organoboron compound), a porous inorganic oxide carrier, and an inert organic solvent. The slurry is enclosed in a closed vessel and the temperature and pressure of the enclosed slurry are increased to a temperature of from about 80.degree. C. to 250.degree. C. and a pressure of from about 5 to 500 psig such that a supported composition is produced in the vessel. After opening the closed vessel, the supported composition and the solvent are separated from each other.

Abstract: Alumoxane, and especially methylalumoxane, which provide supported metallocene and/or transition metal catalyst compositions having increased activity are prepared by heating the alumoxane prior to placing it on the support.

Abstract: Pentafluorophenylmagnesium halides are prepared by a Grignard exchange reaction of hydrocarbylmagnesium halide with pentafluorochlorobenzene. The pentafluorophenylmagnesium halides are converted to pentafluorophenyl metal or metalloid derivatives by reacting them with metal or metalloid halides such as BF.sub.3.