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| Number | Title | Issue Date |
| 7910764 | Polymethylaluminoxane preparation, method of producing the same, polymerization catalyst, and polymerization method of olefins A polymethylaluminoxane preparation exhibiting excellent storage stability with a high yield is provided. A polymethylaluminoxane preparation is formed by thermal decomposition of an alkylaluminum compound having an aluminum-oxygen-carbon bond, the alkylaluminum com... | 03/22/2011 |
| 7902390 | Catalyst activators, processes for making same, and use thereof in catalysts and polymerization of olefins A composition useful for activating catalysts for olefin polymerization Is provided. The composition is derived from at least: carrier; treated organoaluminoxy compound: and ionic compound having at feast one active proton. ... | 03/08/2011 |
| 7662983 | Modified inorganic particles and methods of preparing the same Disclosed are modified inorganic particles and methods of preparing the same. The modified inorganic particle comprises an inorganic particle with hydroxyl groups, and a surface modifier coupled to the inorganic particle via a urethane linkage, wherein the surface m... | 02/16/2010 |
| 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 |
| 7288318 | Cosmetic raw materials having improved properties and processes for preparing the same The present invention provides a hybrid material comprised of an active component for raw materials for cosmetics and a layered metal hydroxide, showing good stability, low toxicity, low irritation, good sustained release and good dispersibility. The present inventi... | 10/30/2007 |
| 7250470 | Crystallization of polypropylene using a semi-crystalline, branched or coupled nucleating agent A method of nucleating a propylene homo- or copolymer, the method comprising contacting the propylene polymer with a semi-crystalline branched or coupled polymeric nucleating agent under nucleation conditions. In one embodiment, the propylene homopolymer is characte... | 07/31/2007 |
| 7250471 | Impact resistance polymer blends of crystalline polypropylene and partially crystalline, low molecular weight impact modifiers Polymer blends that exhibit good impact resistance comprise a crystalline polypropylene matrix and a partly crystalline copolymer impact modifier with a molecular weight lower than that of the matrix polymer. The matrix polymer can comprise any crystalline propylene... | 07/31/2007 |
| 7244498 | Nanoparticles modified with multiple organic acids Surface-modified nanoparticles of boehmite, and methods for preparing the same. Aluminum oxyhydroxide nanoparticles are surface modified by reaction with selected amounts of organic acids. In particular, the nanoparticle surface is modified by reactions with two or ... | 07/17/2007 |
| 7220804 | Method for preparing a catalyst system and its use in a polymerization process The present invention relates to a supported catalyst composition and a method for making the supported catalyst composition and its use in a process for polymerizing olefin(s). In particular, the invention is directed to a method for making a supported catalyst com... | 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 |
| 7195806 | High gloss polyethylene articles The present invention includes an end use article (i.e., an article of manufacture) and a process for making the same, wherein the end use article has a relatively high gloss and exhibits excellent processability over a wide range of processing conditions. The end u... | 03/27/2007 |
| 7193100 | 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. ... | 03/20/2007 |
| 7141527 | Catalyst system and process for the polymerization of olefins A catalyst system for the polymerization of olefins comprising the product obtained by contacting: (A) a metallocene complex; (B) an organometallic aluminium compound of formula (II): Al[CH2—C(Ar)R4R5 | 11/28/2006 |
| 7135427 | Carboxy-modified aluminum-based catalyst compositions A carboxy-modified aluminum-based catalyst composition is of the general formula P(O)(OAlR′R″)3 or RP(O)(OAlR′R″)2 wherein O represents oxygen, P represents pentavalent phosphorous, Al represents aluminum, R comprises hydrogen, an alkyl... | 11/14/2006 |
| 7125939 | Olefin polymerization with polymer bound single-site catalysts Disclosed is a process for polymerizing olefins. The process comprises polymerizing one or more olefins with a single-site catalyst in two or more polymerization stages. The catalyst comprises a transition metal complex, an activator, and a hydroxyl functional polym... | 10/24/2006 |
| 7115764 | Mechanical shear based synthesis of alumoxane nanoparticles A method for forming carboxylate-alumoxane nanoparticles comprises subjecting a mixture comprising boehmite and carboxylic acid to mechanical shear. The method can be carried out at a temperature above ambient and preferably a temperature greater than 80° C., and c... | 10/03/2006 |
| 7109269 | Impact resistant polymer blends of crystalline polypropylene and partially crystalline, low molecular weight impact modifiers Polymer blends that exhibit good impact resistance comprise a crystalline polypropylene matrix and a partly crystalline copolymer impact modifier with a molecular weight lower than that of the matrix polymer. The matrix polymer can comprise any crystalline propylene... | 09/19/2006 |
| 7084221 | Polymerization catalyst system containing polyether-modified aluminoxane A modified aluminoxane is disclosed. Aluminoxane compounds are modified with glycol ethers or polyethers. The modified aluminoxanes are effective activators for single-site catalysts. Catalyst activated with the modified aluminoxane produces polyolefin with increase... | 08/01/2006 |
| 7060754 | Crystallization of polypropylene using a semi-crystalline, branched or coupled nucleating agent A method of nucleating a propylene homo- or copolymer, the method comprising contacting the propylene polymer with a semi-crystalline branched or coupled polymeric nucleating agent under nucleation conditions. In one embodiment, the propylene homopolymer is characte... | 06/13/2006 |
| 7041765 | Films comprising isotactic propylene copolymers Films with excellent machine direction (MD) tear properties comprise at least one layer made from a polymer comprising: (A) at least 50 weight percent (wt%) propylene; and (B) at least 5 wt % ethylene and/or one or more unsaturated comonomers. Represen... | 05/09/2006 |
| 7037989 | Copolymers of ethylene and/or α-olefins and vicinally disubstituted olefins Substantially random ethylene and/or α-olefin copolymers containing units derived from vicinally disubstituted olefin monomers are described. The vicinally disubstituted olefin monomers may be represented by the generic formula (R1)CH═CH(R2)... | 05/02/2006 |
| 7034173 | Chemical products suited for use as co-catalysts, method for the preparation thereof and their use in catalyst systems for producing polyolefins The invention relates to chemical products which are suited for use as co-catalysts and which can be obtained by reacting a compound of formula (I), M1R1R2(R3)m with a compound of formula (II), (R4X) | 04/25/2006 |
| 7030258 | Water-capturing agent and organic EL device A water-capturing agent capable of inhibiting the generation and growth of a darkspot and an organic EL device including the water-capturing agent are provided. The organic EL device uses the water-capturing agent comprising a compound illustrated by the chemical st... | 04/18/2006 |
| 7026496 | Diamido alkoxides as polymerisation initiators The present invention relates to a complex having the formula (I) wherein M is selected from Sn(II), Sn(IV), Al(III) and Mg(II); each of R1 and R2 is independently hydrocarbyl; R3 is H or hydrocarbyl; and X is a linker group. A furth... | 04/11/2006 |
| 6995218 | Metallocene catalysts for olefin or styrene polymerization and polymerization method using the metallocene catalysts The new metallocene catalysts according to the present invention are prepared by reacting a metallocene compound with a compound having at least two functional groups. The metallocene compound is a transition metal compound which a transition metal is coordinated wi... | 02/07/2006 |
| 6960635 | Isotactic propylene copolymers, their preparation and use Unique copolymers comprising propylene, ethylene and/or one or more unsaturated comonomers are characterized as having: at least one, preferably more than one, of the following properties: (i) 13C NMR peaks corresponding to a regio-error at about 14.6 and... | 11/01/2005 |
| 6958306 | Activated catalyst systems from substituted dialuminoxane complexes A catalyst composition and method for preparing a supported catalyst system for olefin polymerization is provided. In one aspect, the catalyst composition includes a reaction product of a dialuminoxane and a halogen substituted aryl borane, wherein the reaction take... | 10/25/2005 |
| 6946535 | Films comprising isotactic propylene copolymers Films with excellent machine direction (MD) tear properties comprise at least one layer made from a polymer comprising: (A) at least 50 weight percent (wt %) propylene; and (B) at least 5 wt % ethylene and/or one o... | 09/20/2005 |
| 6943215 | Impact resistant polymer blends of crystalline polypropylene and partially crystalline, low molecular weight impact modifiers Polymer blends that exhibit good impact resistance comprise a crystalline polypropylene matrix and a partly crystalline copolymer impact modifier with a molecular weight lower than that of the matrix polymer. The matrix polymer can comprise any crystalline propylene... | 09/13/2005 |
| 6942818 | Polysiloxanes with quarternary groups featuring nitrogen atoms Described are polyorganosiloxanes that contain at least one radical in which a quaternized nitrogen atom is present. Furthermore, the polysiloxanes contain at least one further polar radical. The polyorganosiloxanes can be transformed into stable aqueous solutions o... | 09/13/2005 |
| 6933046 | Releasable corrosion inhibitor compositions A new class of releasable corrosion inhibiting materials for protective coatings, methods of making the same, methods of using the same, and coatings containing the same are provided. The materials comprise one or more corrosion inhibitors that are chemically anchor... | 08/23/2005 |
| 6927258 | Elastic blends comprising crystalline polymer and crystallizable polymers of propylene Improved thermoplastic polymer blend compositions comprising an isotactic polypropylene component and an alpha-olefin and propylene copolymer component, said copolymer comprising crystallizable alpha-olefin sequences. In a preferred embodiment, improved thermoplasti... | 08/09/2005 |
| 6927256 | Crystallization of polypropylene using a semi-crystalline, branched or coupled nucleating agent A method of nucleating a propylene homo- or copolymer, the method comprising contacting the propylene polymer with a semi-crystalline branched or coupled polymeric nucleating agent under nucleation conditions. In one embodiment, the propylene homopolymer is characte... | 08/09/2005 |
| 6921800 | Modified aluminum oxy compound, polymerization catalyst and process for producing olefin polymer and alkenyl A modified aluminum oxy compound (A) obtained by reacting an aluminum oxy compound (a), water (b) and a compound having a hydroxyl group (c); a polymerization catalyst component comprising the modified aluminum oxy compound; a polymerization catalyst obtained by con... | 07/26/2005 |
| 6919407 | Blends and sealant compositions comprising isotactic propylene copolymers Films with excellent machine direction (MD) tear properties comprise at least one layer made from a polymer comprising: (A) at least 50 weight percent (wt %) propylene; and (B) at least 5 wt % ethylene and/or one o... | 07/19/2005 |
| 6906160 | 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... | 06/14/2005 |
| 6737379 | Aluminum-oxy compound, catalyst component for polymerizing olefin, and method for producing polyolefin Provided are an aluminium-oxy compound obtained through reaction of an organoaluminium compound with water, which is soluble in hydrocarbon solvents and in which the amount of the organoaluminium compound remaining is at most 10% by weight; a carrier comprising the ... | 05/18/2004 |
| 6562991 | Gelatinous compositions formed from hydroxyaluminoxane, solid compositions formed therefrom, and the use of such compositions as catalyst components Gelatinous compositions of matter which are useful as polymerization catalyst components and are highly stable in terms of OH-decay rate, as well as similarly stable solid compositions of matter formed from such gelatinous compositions, are described. The... | 05/13/2003 |
| 6524985 | Catalyst components for polymerization of olefins and use thereof Disclosed is a catalyst component for the polymerization of olefins, which is a compound having the following structure: ##STR1## wherein R1 is a hydrocarbon radical having 1 to 10 carbon atoms or a halogen-containing hydrocarbon radical having... | 02/25/2003 |
| 6518445 | Methylaluminoxane compositions, enriched solutions of such compositions, and the preparation thereof The methylaluminoxane composition (MAOC) is a solid at 25° C. that has a total aluminum content of about 39 to 47 wt %. The MAOC is either free of aluminum as trimethylaluminum (TMA) or if TMA is present, not more than about 30 mole % of the total alumin... | 02/11/2003 |
