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| Number | Title | Issue Date |
| 8148286 | Activated alkaline earth metal, in particular magnesium, for the preparation of organoalkaline earth metal compounds The invention relates to an activated alkaline earth metal, to a method for its production and the use of the activated alkaline earth metal for the preparation of Grignard compounds and organoalkaline earth metal compounds. ... | 04/03/2012 |
| 8062989 | Magnesium chloroakolate-based catalyst precursors Catalyst precursors comprising Mg, Cl, Ti, and OR groups that are in molar ratios defined by the formula MgClnTip(OR)(2−n)+4p in which n is from 0.3 to less than 1.7, p is lower than 0.6, the molar ratio (OR)/Cl is lower than 4 and... | 11/22/2011 |
| 7998894 | Ligand modified Ziegler-Natta catalyst for olefin (co-)polymerization The present invention relates to a Ziegler-Natta catalyst comprising a solid, ligand-modified catalyst component formed at least from (a) a compound of Group 1 to 3 of the Periodic Table (IUPAC), (b) a transition m... | 08/16/2011 |
| 7989382 | Solid catalyst component for olefin polymerization, catalyst for olefin polymerization and process for producing olefin polymer An olefin polymerization catalyst whose molar ratio of residual alkoxy groups to titanium is 0.60 or less, obtained by reacting (a1) an oxide of an element from Groups II to IV elements and which supports an alcohol-free halogen-containing magnesium compound, with (... | 08/02/2011 |
| 7867939 | Catalyst for ethylene polymerization, preparation thereof, and method for controlling the polymerization kinetic behavior of said catalyst The present invention relates to a catalyst for polymerization of ethylene, a process for preparing the same, and a method for controlling kinetic behavior of said catalyst in ethylene polymerization. Said catalyst contains a titanium-containing main catalyst compon... | 01/11/2011 |
| 7799723 | Method for the production of magnesium alkoxide granules, and use thereof This invention relates to a process for preparing magnesium alkoxide granulates. The process includes the steps of reacting magnesium metal with at least one compound of formula AlR3-nHaln and an alcohol in a non-coordinating solvent. R is an a... | 09/21/2010 |
| 7723254 | Magnesium compound, solid catalyst component, olefin polymerization catalyst, and method for producing olefin polymer A method of producing a magnesium compound by reacting the following components (i), (ii) and (iii): (i) metal magnesium (ii) an alcohol (iii) a metal dihalide compound represented by the general formula (I) containing at least... | 05/25/2010 |
| 7704910 | Catalyst for polymerization of olefins and method for polymerization of olefins A catalyst for olefin polymerization comprising (A) a solid catalyst component prepared by causing (a) a magnesium compound, (b) a tetravalent titanium halide compound, and (c) an electron donor compound to come in contact with each other, (B) an organoaluminum comp... | 04/27/2010 |
| 7700513 | Supported catalyst for olefin polymerization Disclosed are catalyst systems and methods of making the catalyst systems for the polymerization of an olefin containing a solid titanium catalyst component containing an inorganic titanium compound, a magnesium alcohol adduct made from an inorganic magnesium compou... | 04/20/2010 |
| 7666810 | Ziegler-natta catalyst for high temperature polymerization A magnesium titanium olefin polymerization procatalyst is prepared by A) reacting a diorganomagnesium compound with a source of active chlorine, (with the proviso that the amount of chlorine is insufficient to completely convert the diorganomagnesium to magnesium di... | 02/23/2010 |
| 7608555 | Method for the preparation of olefin polymerization catalysts The present invention relates to a process for the production of catalysts, particularly of Ziegler-Natta type of catalysts for olefin polymerisation, to the catalysts as such, and to their use in polymerising olefins. ... | 10/27/2009 |
| 7592286 | Process for the preparation of a catalyst component and components therefrom obtained A process for preparing a catalyst component, comprising a Mg compound a Ti compound and an electron donor compound (ED) selected from alcohol, glycols, esters, ketones, amines, amides, nitrites, alkoxysilanes and aliphatic ethers as essential compounds, comprising ... | 09/22/2009 |
| 7566676 | Preparation method of solid titanium catalyst for olefin polymerization The present invention relates to a preparation method of solid titanium catalyst for olefin polymerization comprising the steps of: (1) preparing a magnesium compound solution by dissolving a magnesium halide compound into a mixed solvent of a cyclic ether and one o... | 07/28/2009 |
| 7528091 | Magnesium-containing carrier component and application to olefin polymerization Solid fine particles which contain a magnesium atom, an aluminum atom and a C1-20 alkoxy group simultaneously, are insoluble in a hydrocarbon solvent, and have an average particle diameter of 3 to 80 μm, and an olefin polymerization catalyst containing t... | 05/05/2009 |
| 7524790 | Solid catalyst component for olefin polymerization, catalyst for olefin polymerization and process for producing olefin polymer A solid catalyst component for olefin polymerization in which the molar ratio of residual alkoxy groups to supported titanium is 0.60 or less is obtained by reacting the following compound (a1) with the following compound (b1) at a hydroxyl group/magnesium molar rat... | 04/28/2009 |
| 7504352 | Catalyst for propylene polymerization A catalyst for use in the formation of polypropylene is disclosed that comprises a titanium compound having at least one titanium-halogen bond, supported on an activated, amorphous magnesium dihalide support that is essentially free of alkoxy functionality, with a t... | 03/17/2009 |
| 7468339 | Diketonate complex-derived catalysts useful for preparing polyolefins An olefin polymerization catalyst may be prepared using a process including contacting a metal compound of the formula M(OR1)2 with a diketone to form a catalyst precursor having the general formula: w... | 12/23/2008 |
| 7456126 | Ziegler-natta catalyst for olefin polymerization including aryloxy group and method for polymerization of olefin using same The present invention relates to a Ziegler-Natta catalyst for olefin polymerization and a method for polymerization of olefin using the same. Specifically, the invention relates to a Zeigler-Natta catalyst for olefin polymerization, which is produced by a method com... | 11/25/2008 |
| 7439313 | Magnesium dichloride-ethanol adducts and catalyst components obtained therefrom A MgCl2.mEtOH.nH2O adducts, where 3.4 | 10/21/2008 |
| 7432220 | Method for the preparation of olefin polymerization catalyst support and an olefin polymerization catalyst The invention is directed to a process for producing a particulate support for an olefin polymerisation catalyst wherein a solution of a magnesium compound is contacted with a solution of an element of Group (13 or 14) of the Periodic Table (IUPAC) to obtain a solid... | 10/07/2008 |
| 7405176 | Solid main catalyst component for ethylene polymerization, a process for preparing the same and a catalyst containing the same The present invention provides a high-activity solid main catalyst component for ethylene polymerization, a process for preparing the same and a catalyst containing the same. The main catalyst component consists essentially of a magnesium compound, a titanium compou... | 07/29/2008 |
| 7402546 | Magnesium chloride support The invention relates to supports comprising inorganic oxide particles coated with magnesium chloride and a method for making them. The inorganic oxide has a mean particle diameter of less than 5 microns and is used as a seed to crystallize magnesium chloride from s... | 07/22/2008 |
| 7402637 | Method for producing a poly-1-olefin in the presence of a Ziegler catalyst The invention relates to a method for producing a poly-1-olefin by polymerization of a 1-olefin of the formula R4C═CH2, in which R4 is hydrogen or an alkyl radical having from 1 to 10 carbon atoms, in suspension, in solution or in ... | 07/22/2008 |
| 7399812 | Silicon ether compounds and a method for the preparation thereof The present invention relates to silicon ether compounds having a general formula (I), a method for the preparation thereof and use thereof as a component of catalysts for polymerization of olefins. In particular, in propylene polymerization, catalyst systems compri... | 07/15/2008 |
| 7393910 | Catalyst composition for ethylene polymerization A process for the polymerization of olefin monomers comprising contacting ethylene or a mixture of ethylene and one or more C4-8 α olefins with a catalyst composition comprising one or more Group 3-10 transition metal containing, Ziegler-Natta, procataly... | 07/01/2008 |
| 7387979 | Magnesium compound, solid catalyst component for olefin polymerization, catalyst for olefin polymerization and method for producing polyolefin A magnesium compound obtained by reacting metallic magnesium having a sphericity (S) of less than 4.00, the sphericity (S) being represented by the following formula (I), an alcohol, and a halogen and/or a halogen-containing compound containing halogen atoms in an a... | 06/17/2008 |
| 7365138 | Pretreated and prepolymerized polyolefin catalyst, production thereof and method of use A method of modifying a Ziegler-Natta type polyolefin catalyst comprises contacting the Ziegler-Natta catalyst with olefin monomer to form a prepolymerized catalyst. The prepolymerized catalyst can comprise a reduced number of catalyst particles having a size of 40 ... | 04/29/2008 |
| 7361621 | Magnesium halide/alcohol adduct, its preparation and use The present invention provides a process for preparing particles of magnesium halide/alcohol adduct, said process comprising: preparing a melt of magnesium halide/alcohol adduct in an inert liquid medium, dispersing the mixture of the inert liquid medium and the mel... | 04/22/2008 |
| 7354981 | Polyethylene catalyst and a process for preparing the same The present invention discloses a polyethylene catalyst and a process for preparing the same, said catalyst being composed of a main component of catalyst and a cocatalyst, wherein the main component of catalyst is prepared by reacting: (1) a magnesium-alcohol compl... | 04/08/2008 |
| 7351678 | Catalyst systems for Ziegler-Natta propene polymerisation The invention relates to the use of nitrogenous aluminium organyl complexes of general formula (I) as co-catalysts in heterogeneous polymerisation reactions of propene. In said formula: R, R′, R1 and R1′ independently of one another represe... | 04/01/2008 |
| 7348383 | Spray-dried, mixed metal ziegler catalyst compositions A Ziegler-Natta catalyst composition comprising a solid mixture formed by halogenation of: Al) a spray-dried catalyst precursor comprising the reaction product of a magnesium compound, a non-metallocene titanium compound, and at least one non-metallocene compound of... | 03/25/2008 |
| 7341971 | Production of olefin polymerization catalysts The invention provides a process for producing an olefin polymerization catalyst, comprising an organometallic compound of a transition metal or of an actinide or lanthanide, in the form of solid catalyst particles, comprising forming a liquid/liquid emulsion system... | 03/11/2008 |
| 7332455 | Catalyst component and catalyst for olefin polymerization as well as use thereof The present invention relates to a catalyst component and a catalyst for olefin polymerization. The catalyst component utilizes magnesium halide and silica as composite support, and the particle morphology thereof can be improved by regulating the ratio of magnesium... | 02/19/2008 |
| 7329626 | Ziegler-Natta catalyst, preparation, and use for the polymerization of alkenes A method for making a solid catalytic component for a Ziegler-Natta catalyst includes contacting a particulate porous support with a solution of a hydrocarbon soluble organomagnesium precursor compound in a hydrocarbon solvent; and reacting said hydrocarbon soluble ... | 02/12/2008 |
| 7326757 | Supported catalyst for olefin polymerization Disclosed are catalyst systems and methods of making the catalyst systems for the polymerization of an olefin containing a solid titanium catalyst component containing an inorganic titanium compound, a magnesium alcohol adduct made from an inorganic magnesium compou... | 02/05/2008 |
| 7323525 | Process for the production of propylene copolymers Polymers of propylene with one or two olefin comonomers are produced through the use of a polymerization catalyst supported on a carrier produced by spray crystallization and having a maximum dimension of 55 μm. Copolymers of superior properties are obtained, and t... | 01/29/2008 |
| 7315335 | Liquid crystal display device with variations of positions of peaks of depth distributions of concentration of impurities in polycrystalline being within 10% of thickness A liquid crystal display device is provided with a pixel area on a substrate having plural gate lines, plural drain lines, plural thin film transistors and plural pixel electrodes corresponding to the plural thin film transistors, and a drive circuit area disposed a... | 01/01/2008 |
| 7307035 | Magnesium dichloride-alcohol adducts and catalyst components obtained therefrom The present invention relates to an adduct comprising MgCl2, an alcohol (ROH) in which R is a C1-C10 hydrocarbon group, and a compound containing a transition metal M selected from the Groups 3 to 11 or the lanthanide or actinide groups of the ... | 12/11/2007 |
| 7307036 | Highly active alpha-olefin polymerization catalyst A highly active alpha-olefin polymerization catalyst component is disclosed. In the presence of a co-catalyst, the catalyst component is useful for the production of LLDPE resins. The catalyst component is produced by a method whereby organic silicon compounds are r... | 12/11/2007 |
| 7300902 | Catalyst for polymerization of ethylene, preparation thereof and use of the same The present invention provides an ethylene polymerization catalyst. The present invention also provides a process for preparing the ethylene polymerization catalyst, comprising reacting powdered magnesium with an alkyl halide of formula RX in the presence of an ethe... | 11/27/2007 |
