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| Number | Title | Issue Date |
| 7579415 | Polymerization process using metallocene catalyst systems The present invention relates to a polymerization process using improved metallocene catalyst systems. Specifically, the catalyst systems of the present invention relate to a metallocene compound having optimized metals loading and activator concentration, and demon... | 08/25/2009 |
| 7439379 | Transition metal complex, catalyst for olefin polymerization, and process for producing olefin polymer with the same The present invention relates to a transition metal complex represented by the formula (I): wherein M represents a Group 4 transition metal; —Y— represents (a): —C(R... | 10/21/2008 |
| 7435701 | Catalytic composition and its preparation and use for preparing polymers from ethylenically unsaturated monomers A catalytic composition, including a neutral metal-pair complex, is disclosed, along with a method for its preparation. A method for the polymerization of ethylenically unsaturated monomers using the catalytic composition, and the addition polymers produced thereby ... | 10/14/2008 |
| 7402638 | Propylene polymer particle method of producing the same and use thereof The present invention relates to a propylene random copolymer which satisfies the following requirements [1] to [4], and to various useful molded products obtained by molding the propylene random copolymer: [1] the concentration (P... | 07/22/2008 |
| 7390862 | Process for polymerizing 1-butene A process for polymerizing 1-butene, optionally with up to 30% by mol of ethylene, propylene or an alpha olefin of formula CH2═CHT wherein T is a C3-C10 alkyl group, in the presence of a catalyst system obtainable by contacting a m... | 06/24/2008 |
| 7388062 | Group IIIb metal complexes with “constrained geometry” fluorenyl based ligands The present invention discloses a metallocene catalyst component based on a Group IIIb metal of the periodic Table and a bridged heteroatom-fluorenyl ligand. It also discloses its method of preparation and its use in polymerisation. ... | 06/17/2008 |
| 7381679 | Catalyst combination, isotactic polymers and also a method for producing linear isotactic polymers and the use thereof The present invention relates to a catalyst combination for producing linear isotactic polymers containing an asymmetrical metal complex and also an activator. ... | 06/03/2008 |
| 7371803 | Catalyst composition II This invention relates to a transition metal catalyst compound represented by the formula: LMX2 or (LMX2)2 wherein each M is independently a Group 7 to 11 metal, preferably a Group 7, 8, 9, or 10 metal; each L is, independently, a tr... | 05/13/2008 |
| 7368411 | Supported metallocene catalysts and their use in producing stereospecific polymers Supported stereospecific catalysts and processes for the stereotactic propagation of a polymer chain derived from ethylenically unsaturated monomers which contain three or more carbon atoms or which are substituted vinyl compounds, specifically alpha olefins, partic... | 05/06/2008 |
| 7365039 | Morphology controlled olefin polymerization process A catalyst composition, method of formation and process of use in the polymerization of olefin monomers, said composition comprising a catalyst compound, an activator capable of converting said catalyst compound into an active catalyst for addition polymerization, o... | 04/29/2008 |
| 7355058 | Haloaluminoxane compositions, their preparation, and their use in catalysis 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 produ... | 04/08/2008 |
| 7345119 | Olefin polymerization catalyst and olefin polymerization method using the same An olefin polymerization solid catalyst including a reaction product of a transition metal compound and an organoaluminum compound carried on a support having silica treated with an organoaluminum-oxy compound. ... | 03/18/2008 |
| 7335711 | Preparation and use of tetrasubstituted fluorenyl catalysts for polymerization of olefins Catalyst compositions and processes for the polymerization of ethylenically unsaturated monomers to produce polymers, including copolymers or homopolymers. Such monomers include ethylene, C3+ alpha olefins and substituted vinyl compounds, such as styrene ... | 02/26/2008 |
| 7320950 | Propylene polymer, and resin composition and molded product thereof The propylene polymer of the present invention satisfies (1) a 25° C. hexane soluble content (H25) of 0-80 wt %; and (2) either no melting temperature (Tm) measurable by differential scanning calorimetry (DSC), or a melting temperature (Tm) satisfying, if measurabl... | 01/22/2008 |
| 7309748 | Group III bridged ionic metallocene based on cyclopentadienyl-fluorenyl ligands The present invention discloses a metallocene catalyst component of the formula (I) [(Flu-R″-Cp)2M]−[Li(ether)4]+, wherein Cp is a cyclopentadienyl, substituted or unsubstituted, Flu is a fluorenyl, substituted or unsu... | 12/18/2007 |
| 7307177 | Metallocene complexes, their synthesis and use in catalyst systems for olefin polymerization A metallocene complex is represented by the the formula (CpR5)nMXk where Cp (each occurrence) is a cyclopentadienyl group; each of the five R substituents on the or each cyclopentadienyl grou... | 12/11/2007 |
| 7300994 | Isotactic polypropylene containing polymers Isotactic polypropylene homopolymers or segments of low polydispersity are prepared using phenoxyketimine catalysts containing N-pentafluorophenyl groups. ... | 11/27/2007 |
| 7297805 | Chromium complexes and their use in olefin polymerization A composition having the formula I where R1 and R2 are independently hydrogen, C1 to C12 linear and branched alkyl, C3 to C12 cycloalkyl, aryl, C1 | 11/20/2007 |
| 7294600 | Supported hybrid metallocene catalyst, method for preparing the same, and method for preparing polyolefin using the same The present invention relates to a supported metallocene catalyst used for preparing polyolefin whose physical properties and molecular weight distribution can be easily controlled, a method for preparing the same, and a method for preparing polyolefin using the sam... | 11/13/2007 |
| 7294681 | Mutliple catalyst system for olefin polymerization and polymers produced therefrom This invention relates to a polymer of one or more C3 to C40 olefins, optionally one or more diolefins, and less than 15 mole % of ethylene, and polymerization processes for producing the same. ... | 11/13/2007 |
| 7285606 | Process for the preparation of a polyolefin The invention related to a process for the polymerization of at least one aliphatic or aromatic hydrocarbyl C2-20 mono- or multiolefin in the presence of a catalyst and a boron comprising co-catalyst, wherein the catalyst comprises a composition of a metal-organic r... | 10/23/2007 |
| 7282548 | Process for production of high-isoprene butyl rubber The present invention relates to a continuous process for producing polymers at conversions ranging from 50% to 95% having a Mooney viscosity of at least 25 Mooney-units and a gel content of less than 15 wt. % containing repeating units derived from at least one iso... | 10/16/2007 |
| 7276567 | Heterocyclic substituted metallocene compounds for olefin polymerization This invention relates to compounds represented by formula: wherein M is a group 3, 4, 5 or 6 transition, lanthanide, or actinide metal atom; E is an indenyl ligand substituted in any po... | 10/02/2007 |
| 7268095 | Transition metal catalysts for (co) polymerizing of olefinic monomers A compound of the formula Ia or Ib; where, in the formula Ia, E1 is O, S, Se, Te, NR, CR2, or PR; E2, E... | 09/11/2007 |
| 7265193 | Polymerization process This invention relates to a process to polymerize olefins comprising: contacting: (i) propylene and (ii) a mixture comprising, optionally ethylene, and three or more different alpha olefins having ... | 09/04/2007 |
| 7259216 | Method for producing highly branched ethylene polymers A process for preparing highly branched ethylene polymers comprises polymerizing ethylene over a catalyst system comprising a compound of the formula Ia or Ib and an activator, where the process is carried out at... | 08/21/2007 |
| 7247687 | Late transition metal catalysts for olefin polymerization and oligomerization This invention relates to a transition metal compound represented by the formula LMX wherein M is a Group 3 to 11 metal L is a bulky bidentate or tridentate neutral ligand that is bonded to M by two or three heteroatoms and at least one heteroatom is nitrogen; X is ... | 07/24/2007 |
| 7244795 | Polymerization process using metallocene catalyst systems The present invention relates to a polymerization process using improved metallocene catalyst systems. Specifically, the catalyst systems of the present invention relate to a metallocene compound having optimized metals loading and activator concentration, and demon... | 07/17/2007 |
| 7241848 | Process for preparing low molecular weight olefin (CO)polymer and polymerization catalyst used therefor The present invention provides a process for preparing a low molecular weight olefin (co)polymer having a narrow molecular weight distribution with high productivity, by polymerizing or copolymerizing an olefin in the presence of an olefin polymerization catalyst co... | 07/10/2007 |
| 7241715 | Bridged bi-aromatic ligands, catalysts, processes for polymerizing and polymers therefrom New ligands and compositions with bridged bis-aromatic ligands are disclosed that catalyze the polymerization of monomers into polymers. These catalysts with metal centers have high performance characteristics, including higher comonomer incorporation into ethylene/... | 07/10/2007 |
| 7241714 | Bridged bi-aromatic catalysts, complexes, and methods of using the same Ligands, compositions, metal-ligand complexes and arrays with substituted bridged bis-biaromatic ligands, and methods of making and using the same, are disclosed that are useful in the catalysis of transformations such as the polymerization of monomers into polymers... | 07/10/2007 |
| 7229943 | Polymerisation and oligomerisation catalysts A polymerisation catalyst comprising (1) a transition metal compound of Formula A, and optionally (2) an activating quantity of a Lewis acid activator. Z is a five-membered heterocyclic group containing at least ... | 06/12/2007 |
| 7223822 | Multiple catalyst and reactor system for olefin polymerization and polymers produced therefrom Disclosed is a process for producing branched polymers including at least 50 mol % C3–C40 olefins. The process may include: (1) feeding a first catalyst, an activator, and one or more C2–C40 olefins into a first reacti... | 05/29/2007 |
| 7220695 | Supported activator This invention relates to supported activators comprising the product of the combination of an ion-exchange layered silicate, an organoaluminum compound, and a heterocyclic compound, which may be substituted or unsubstituted. This invention further relates to cataly... | 05/22/2007 |
| 7214744 | Borate activator A catalyst system comprising (i) a bulky ligand catalyst compound; and (ii) a novel borate activator is active for olefin polymerization. The novel borate contains at least one chelating (divalent) ligand and contains at least one fluorine atom. Preferred borate act... | 05/08/2007 |
| 7214747 | Phosphorus substituted metallocene compounds for olefin polymerization This invention relates to a metallocene compounds represented by formula: wherein M is a group 3, 4, 5 or 6 transition metal atom, or a lanthanide metal atom, or actinide metal atom; E i... | 05/08/2007 |
| 7214746 | Phosphorus bridged metallocene compounds for olefin polymerization This invention relates to metallocene compounds represented by formula: wherein M is a group 3, 4, 5 or 6 transition metal atom, or a lanthanide metal atom, or actinide metal atom; E is ... | 05/08/2007 |
| 7214748 | Process for the production of an azo-catalyst for the polymerization of olefins The present invention relates to a process for the production of a catalyst by reacting metal compounds with azo ligands, the catalyst, the use of this catalyst as a polymerization catalyst, a process for olefin (co)polymerization with the aid of these catalysts, re... | 05/08/2007 |
| 7211536 | Supported metallocene catalysts and their use in producing stereospecific polymers Supported stereospecific catalysts and processes for the stereotactic propagation of a polymer chain derived from ethylenically unsaturated monomers which contain three or more carbon atoms or which are substituted vinyl compounds, specifically alpha olefins, partic... | 05/01/2007 |
| 7199072 | Process of producing a supported mixed catalyst system and polyolefins therefrom A process for preparing a mixed catalyst compound used in the polymerization of polyolefins to produce bimodal polyethylenes is disclosed. In an embodiment, a process of preparing the mixed catalyst system includes: mixing a first catalyst and an activator in a firs... | 04/03/2007 |
