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| Number | Title | Issue Date |
| 7947787 | Control of polymer architecture and molecular weight distribution via multi-centered shuttling agent A process for the polymerization of one or more addition polymerizable monomers and the resulting polymer composition, said process comprising contacting an addition polymerizable monomer or mixture of monomers in a reactor or reactor zone with a composition compris... | 05/24/2011 |
| 7943711 | Ethylene elastomer compositions In a process for producing an elastomer composition, ethylene, at least one alpha-olefin, and at least one diene is contacted with a catalyst system comprising at least two metallocene catalyst compounds and a non-coordinating anion activator wherein one of the meta... | 05/17/2011 |
| 7842763 | Catalyst compositions and polyolefins for extrusion coating applications This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a supported catalyst composition. In one aspect, the present invention enco... | 11/30/2010 |
| 7807762 | Catalyst composition comprising Group 4 transition metal complexes and method for preparing polyolefins using the same The present invention relates to a catalyst composition comprising a novel structure of a Group 4 transition metal compound, to a method for preparing the same, and to a method for preparing a polyolefin using the catalyst composition. The method for preparing a pol... | 10/05/2010 |
| 7776978 | Process for producing fractionable 1-butene polymers A process for producing a 1-butene polymer comprising the step of polymerizing 1-butene in the presence of a catalyst system obtainable by contacting: b) at least a metallocene compound of formula (Ia) in the meso or meso-like form: | 08/17/2010 |
| 7671148 | Catalyst system for olefin polymerization, its production and use Process for producing a catalyst system, which comprises the following steps: A) provision of a mixture of at least two different organic transition metal compounds, at least one hydrolyzed organoaluminum compound and a solvent and impregnation of a dry porous suppo... | 03/02/2010 |
| 7638584 | Olefin polymerization process A process for polymerizing ethylene is disclosed. The process comprises polymerizing ethylene in the presence of a catalyst system which comprises a bridged indenoindolyl transition metal complex on a support material, an alkylalumoxane, a titanium tetralkoxide, and... | 12/29/2009 |
| 7619047 | Dual metallocene catalysts for polymerization of bimodal polymers This invention relates to catalyst compositions, methods, and polymers encompassing at least one first Group 4 metallocene compound comprising bridging η5-cyclopentadienyl-type ligands, in combination with at least one second Group 4 metallocene with non... | 11/17/2009 |
| 7439312 | Branched crystalline polypropylene Branched crystalline polypropylene compositions and methods for the preparation of branched crystalline polypropylene compositions are provided. For example, described herein is a process of preparing a branched crystalline polypropylene composition that includes co... | 10/21/2008 |
| 7410926 | Polymerization process using a supported, treated catalyst system The present invention relates to a supported, treated catalyst system and its use in a process for polymerizing olefin(s). More particularly, it provides a supported, treated catalyst system produced by a process comprising the steps of: (a) forming a supported bime... | 08/12/2008 |
| 7365137 | Multistep process for the (co) polymerization of olefins A multistep process for the polymerization of one or more olefins comprising a first step of polymerizing one or more of said olefins in the presence of a catalyst of the Ziegler-Natta type, a step wherein the polymer obtained in the first step is contacted with a c... | 04/29/2008 |
| 7354979 | Polymer production at supercritical conditions This invention relates to a process to polymerize olefins comprising contacting, in a polymerization system, olefins having three or more carbon atoms with a catalyst compound, activator, optionally comonomer, and optionally diluent or solvent, at a temperature abov... | 04/08/2008 |
| 7323524 | Tandem tetramerisation-polymerisation of olefins The invention provides a process for polymerising olefins to branched polyolefins in the presence of a polymerisation catalyst and a cocatalyst, wherein the cocatalyst produces 1-octene in a selectivity greater than 30%. ... | 01/29/2008 |
| 7312283 | Polymerization catalysts and process for producing bimodal polymers in a single reactor Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. Methods for preparing and using such catalysts to produce polyolefins are also provided. The compositions... | 12/25/2007 |
| 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 |
| 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 |
| 7276568 | Copolymer, adhesive containing the same and laminate A copolymer of a strait chain α-olefin and a vinyl compound (I) represented by the general formula CH2═CH—R, wherein R is a hydrocarbon group, the steric parameter Es of the substituent R is −1.64 or less and the steric parameter B1 of the substitu... | 10/02/2007 |
| 7276566 | De-foaming spray dried catalyst slurries A method for preparing a spray dried catalyst and a low viscosity, low foam spray dried catalyst system for olefin polymerization are provided. In one aspect, the method includes preparing a catalyst system including one or more components selected from metallocenes... | 10/02/2007 |
| 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 |
| 7226880 | Breathable, extensible films made with two-component single resins A film formed from a two-component single resin including two components, not blended or co-polymerized, but inter-polymerized. The two components may have different densities and/or different melt indexes, with the resulting resin having properties of a blend of th... | 06/05/2007 |
| 7223824 | Multinuclear transition metal compound and catalyst system including the same A multinuclear transition metal compound which has two or more catalytic active sites, and is useful in preparing the olefin polymer and copolymer, is disclosed. The multinuclear transition metal compound for olefin polymerization includes two or more metals, and at... | 05/29/2007 |
| 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 |
| 7220805 | Process for producing contact product; catalyst component for addition polymerization; process for producing catalyst for addition polymerization; and process for producing addition polymer There are provided (1) a process for producing a contact product, which comprises the step of contacting at least a phthalocyanine complex, a porphyrin complex, or their combination with a surfactant; (2) a catalyst component for addition polymerization, which compr... | 05/22/2007 |
| 7199203 | Isotactic propylene copolymer fibers, their preparation and use Fibers comprising a propylene homopolymer or a copolymer of propylene and at least one of ethylene and one or more unsaturated comonomers exhibit desirable properties. The homopolymers are characterized as having 13C NMR peaks corresponding to a regio-err... | 04/03/2007 |
| 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 |
| 7199073 | Resins that yield low haze films and the process for their production Catalyst compositions comprising a first metallocene compound, a second metallocene compound, a third metallocene compound, a chemically-treated solid oxide, and an organoaluminum compound are provided. Methods for preparing and using the catalyst and polyolefins ar... | 04/03/2007 |
| 7196147 | Olefin polymerization process with improved operability and polymer properties Ethylene and optional comonomers are polymerized in the presence of an organozinc compound and a catalyst system to produce an ethylene polymer. The catalyst system comprises a bridged indenoindolyl Group 3-10 transition metal complex and an activator. The organozin... | 03/27/2007 |
| 7193003 | Copolymer, adhesive containing the same and laminate A copolymer of a strait chain α-olefin and a vinyl compound (I) represented by the general formula CH2═CH—R, wherein R is a hydrocarbon group, the steric parameter Es of the substituent R is −1.64 or less and the steric parameter B1 of the substitu... | 03/20/2007 |
| 7179873 | Branched ionomers A branched aromatic ionomer is prepared by co-polymerizing a first monomer having an aromatic moiety and an unsaturated alkyl moiety and a second monomer having an ionic moiety and at least one unsaturated moiety. The ionic moiety may have a cationic group having a ... | 02/20/2007 |
| 7179766 | Method and apparatus for production of enrobed catalyst pastilles or flakes The present development relates to a process for enrobing active catalytic materials with a protective coating to form pastilles, and to an apparatus for making the pastilles. The process comprises mixing an active catalyst powder with a hydrocarbon material in a lo... | 02/20/2007 |
| 7172987 | Bimetallic catalyst, method of polymerization and bimodal polyolefins therefrom Bimetallic catalysts, and methods of producing a bimetallic catalyst comprising a modified Ziegler-Natta catalyst and a metallocene are provided, in one embodiment the method including combining: (a) a Ziegler-Natta catalyst comprising a Group 4, 5 or 6 metal halide... | 02/06/2007 |
| 7160949 | Olefin block copolymers, processes for producing the same and uses thereof Olefin block copolymers (A-1) are disclosed represented by the formula (I) PO1-g1-B1 . . . (I) wherein PO1 is a segment comprised of repeating units derived from an olefin having 2 to 20 carbon atoms, g1 is an e... | 01/09/2007 |
| 7160950 | Modified olefin copolymer A modified olefin-based copolymer produced by graft-polymerizing an alkenyl aromatic hydrocarbon and/or an unsaturated carboxylic acid or derivative thereof to an olefin-based copolymer containing repeating units derived from a linear α-olefin and/or ethylene copol... | 01/09/2007 |
| 7148305 | Method of making interpolymers and products made therefrom Olefin polymers having a comb-like structure with at least 0.3 long-chain branches per 1000 carbon atoms are disclosed. Some compositions have a melt strength of about 5 cN at 190° C., and when made into a film have a CD shrink of at least 20%. Some compositions de... | 12/12/2006 |
| 7144964 | Solution polymerization process utilizing preassembled bimetallic Ziegler-Natta catalyst A high-temperature solution process for polymerizing ethylene is disclosed. The polymerization is performed in the presence of a preassembled bimetallic Ziegler-Natta catalyst and an aluminum compound. Molecular modeling calculations predict that the bimetallic Zieg... | 12/05/2006 |
| 7138469 | Process for the polymerization of olefins Process for the polymerization of olefins CH2═CHR, in which R is hydrogen or a hydrocarbon radical with 1–12 carbon atoms, carried out in the presence of a catalyst component (A) comprising Mg, Ti and halogen as essential elements and of a catalyst co... | 11/21/2006 |
| 7129302 | Bimetallic catalyst for producing polyethylene resins with bimodal molecular weight distribution, its preparation and use Bimetallic catalyst for producing polyethylene resins with a bimodal molecular weight distribution, its preparation and use. The catalyst is obtainable by a process which includes contacting a support material with an organomagnesium component and carbonyl-containin... | 10/31/2006 |
| 7119153 | Dual metallocene catalyst for producing film resins with good machine direction (MD) elmendorf tear strength This invention relates to catalyst compositions comprising a first metallocene compound, a second metallocene compound, at least one chemically-treated solid oxide, and at least one organoaluminum compound. This invention also relates to methods to prepare and use t... | 10/10/2006 |
| 7101939 | Ethylene/α-olefin copolymer made with a non-single-site/single-site catalyst combination, its preparation and use An ethylene/α-olefin copolymer comprising a component produced by a non-single-site polymerization catalyst and a component produced by a single-site polymerization catalyst, its preparation and use are described. The copolymer has an α-olefin content of 5 to 20 p... | 09/05/2006 |
| 7094393 | Tooth bleaching compositions The present invention relates to improved dental compositions and methods for bleaching teeth. More specifically, this invention is directed towards hydrogen peroxide-containing compounds that are maintained at a substantially constant pH range of 6.0–10.0 during ... | 08/22/2006 |
