Abstract: This invention relates to a method to oligomerize ethylene comprising combining ethylene with a catalyst system comprising an activator and one or more phenoxide group metal compounds represented by the formula: wherein R3, R4, R5, R8, R9 and R10 may each independently be hydrogen, a halogen, a heteroatom containing group or a C1 to C100 group, provided that at least one of these groups has a Hammett &sgr;p value (Hansch, et al Chem. Rev. 1991, 91, 165) greater than 0.20; R2 and R7 may each independently be alkyl, aryl or silyl groups; R1 and R6 may each independently be an alkyl group, an aryl group, an alkoxy group, or an amino group; N is nitrogen; H is hydrogen; O is oxygen; M is a group 4 transition metal; and each X may each independently be an anionic ligand or a dianionic ligand.

Abstract: The present invention relates to a process for the polymerization of monomers utilizing a bulky ligand hafnium transition metal metallocene-type catalyst compound, to the catalyst compound itself and to the catalyst compound in combination with an activator. The invention is also directed to an ethylene copolymer composition produced by using the bulky ligand hafnium metallocene-type catalysts of the invention, in particular a single reactor polymerization process.

Abstract: A method to synthesize a Group 15 containing metal polymerization catalyst is disclosed. The method includes an efficient high temperature synthesis of Group 15 containing ligands, especially arylamine ligands, for use in preparing polymerization catalysts and catalyst systems.

Abstract: Disclosed are polymerization catalyst activator compositions which include a carbonium cation and an aluminum containing anion. These activator compositions are prepared by combining a carbonium or trityl source and with an aluminum containing complex, preferably a perfluorophenylaluminum compound. Also disclosed are polymerization catalyst systems including the activator composition of the invention, and processes for polymerizing olefins utilizing same.

Abstract: The present invention relates to mixed catalyst system of at least one bridged, bulky ligand metallocene-type compound, and at least one bridged, asymmetrically substituted, bulky ligand metallocene-type compound, a method of making the mixed catalyst system and to there use in a polymerization process to produce polymers having an unexpected improvement in processability.

Abstract: This invention relates to an olefin polymerization catalyst composition comprising the product of the combination of at least one activator and at least two different transition metal compounds each of which is represented by the formula: ((Z)XAt(YJ))qMQn  (I) where M is a metal selected from Group 3 to 13 or lanthanide and actinide series of the Periodic Table of Elements; Q is bonded to M and each Q is a monovalent, divalent or trivalent anion; X and Y are bonded to M; X and Y are independently C or a heteroatom, provided that at least one of X and Y is a heteroatom and Y is contained in a heterocyclic ring J, where J comprises from 2 to 50 non-hydrogen atoms; Z is bonded to X, where Z comprises 1 to 50 non-hydrogen atoms; t is 0 or 1; when t is 1, A is a bridging group joined to at least one of X, Y or J; q is 1 or 2; n is the oxidation state of M minus q if Q is a monovalent anion, n is (the oxidation state of M−q)/2, if Q is a bivalent anion or n is (the oxidation state of M−q)/3

Abstract: The present invention relates to a method to polymerize monomer comprising contacting one or more monomer(s) with a catalyst system in a gas phase reactor having a recycle system, for removing a recycle gas and unreacted monomer(s) from the reactor and returning the recycle gas and fresh monomer(s) to the reactor, and a plenum, the method comprising the steps of: (a) cooling the recycle gas to form a cooled recycle gas; (b) optionally combining the cooled recycle gas with additional recycle gas; and (c) injecting the cooled recycle gas into the gas phase reactor through the plenum.

Abstract: The invention provides new olefin(s) polymerization catalyst systems, including polytetrafluoroethylene support. The invention also provides methods of preparing the catalyst system, and to the catalyst system's use in a gas or slurry polymerization process.

Abstract: The present invention relates to a composition of carboxylate metal salt and a flow improver useful in combination with a polymerization catalyst to improve the flowability and bulk density of the catalyst. The invention also relates to a polymerization process using the catalyst.

Abstract: This invention is directed to a process for the preparation of polyolefins from one or more olefinic monomers comprising combining said olefins under olefin polymerization conditions with an organometallic catalyst compound that is activated for olefin polymerization by reaction with at least one Lewis acid aluminum compound of the formula RnAl(ArHal)3−n, where “ArHal” is a halogenated aryl group, n=1 or 2, and R is a monoanionic group other than a halogenated aryl group. The invention also relates to a polymer produced using the process and to the polymer itself.

Abstract: The present invention relates to a catalyst composition and a method for making the catalyst composition of a polymerization catalyst and a carboxylate metal salt. The invention is also directed to the use of the catalyst composition in the polymerization of olefin(s). In particular, the polymerization catalyst system is supported on a carrier. More particularly, the polymerization catalyst comprises a bulky ligand metallocene-type catalyst system.

Abstract: Catalyst compositions, systems and methods, useful in polymerization processes, are disclosed, which utilize bridged metallocene catalysts, preferably including indenyl groups, bound to the transition metal and a vinyl group bound to the bridge.

Abstract: A process for the preparation of polyolefins from one or more olefinic monomers is described in which the olefins are combined with a catalyst complex derived from a catalyst compound having a bis-haloaryl-Group 13 element substituted Group 13-15 atom-containing bridging element, and a co-catalyst activator a tri-n-alkyl aluminum compound or aluminoxy derivative thereof. The process is particularly useful with bisarylboron substituted silicon-bridged metallocenes under gas phase, slurry, solution or supercritical high pressure coordination polymerization conditions for polyolefins derived from olefinic monomers selected from the group consisting of ethylene, &agr;-olefins, cyclic olefins, non-conjugated diolefins, vinyl aromatic olefins, and geminally disubstituted olefins.

Abstract: This invention relates to a polymerization process comprising combining an olefin in the gas or slurry phase with a liquid carrier comprising an activator and a compound represented by the following formula: wherein M is a Group 3 to 12 transition metal or a Group 13 or 14 main group metal, each X is independently a leaving group, y is 0 or 1 (when y is 0 group L′ is absent), n is the oxidation state of M, m is 0, −1, −2 or −3, L is a Group 15 or 16 element, L′ is a Group 15 or 16 element or Group 14 containing group, Y is a Group 15 element, Z is a Group 15 element, R1 and R2 are independently a C1 to C20 hydrocarbon group, a heteroatom containing group having up to twenty carbon atoms, silicon, germanium, tin, lead, or phosphorus, R3 is absent or a hydrocarbon group, hydrogen, a halogen, a heteroatom containing group, R4 and R5 are independently an alkyl group, an aryl group, substituted aryl group, a cyclic alkyl group, a substituted cyclic alkyl

Abstract: Blend compositions of ethylene inter-polymers have equal or improved processability when compared to blends of high pressure produced polyethylenes (HP-LDPE) and linear low density ethylene inter-polymers (HP-LDPE/LLDPE). Additionally, the blends of ethylene inter-polymers have superior optical and physical properties to the HP-LDPE/LLDPE blends. The ethylene inter-polymer blends include a first ethylene inter-polymer having, an nRSI greater than 26, a PDI of greater than 3, or less than 15, a CCLDI greater than 1.0, or less than 10.0, and a branching factor less than 0.7. These inter-polymer blends also include a second ethylene inter-polymer that has an nRSI of greater than 1 or less than 11, a PDI of greater than 1.5 or less than 6, a CCLDI greater than 1 or less than 20, and a branching factor greater than factor 0.70, or less than 1.

Abstract: This invention relates to methods to introduce multiple catalysts, activators or catalyst systems into a gas phase reactor.

Abstract: The present invention relates to a catalyst composition and a method for making the catalyst composition of a polymerization catalyst and a carboxylate metal salt. The invention is also directed to the use of the catalyst composition in the polymerization of olefin(s). In particular, the polymerization catalyst system is supported on a carrier.

Abstract: The present invention relates to a process for polymerizing olefin(s) utilizing a cyclic bridged metallocene-type catalyst system to produce enhanced processability polymers.

Abstract: The present invention relates to mixed catalyst system of a Group 15 containing metal catalyst compound, a bulky ligand metallocene-type catalyst compound, and a Lewis acid aluminum containing activator and to a supported version thereof and for their use in a process for polymerizing olefin(s).

Abstract: A catalyst composition for the polymerization of olefins is provided, comprising a bis(hydroxy aromatic nitrogen ligand) transition metal catalyst precursor and an activating cocatalyst.