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| Number | Title | Issue Date |
| 7476769 | Production of hydroperoxized functionalized olefinic compounds Process for the preparation of a hydroperoxide functionalized olefinic compound in an oxidation reactor containing a particulate catalyst bed comprising a light induced photosensitized catalyst component supported on a particulate substrate material forming a permea... | 01/13/2009 |
| 7419929 | Critical phase alkylation process A process for the production of ethylbenzene by the ethylation of benzene in the critical phase over a molecular sieve aromatic alkylation catalyst comprising cerium-promoted zeolite beta. An aromatic feedstock having a benzene content of at least 90 wt. % is suppli... | 09/02/2008 |
| 7399402 | Method for hydrotreatment of a mixture of hydrocarbon compounds, rich in olefins and aromatic compounds Process for the hydrotreatment of a mixture of C4 to C8 hydrocarbon-based compounds, rich in olefins and monoaromatic compounds, by hydrogenation in the presence of a solid catalyst, characterized in that an ammonia precursor is introduced into the charge of hydroca... | 07/15/2008 |
| 7396888 | Catalyst system comprising a mixture of catalyst components for producing a polyolefin blend Provided is a catalyst system for producing a polyolefin blend, which catalyst system comprises a mixture including the following catalyst components: i) a catalyst component A capable of producing an isotactic olefin polymer, and/or a catalyst component A′ capabl... | 07/08/2008 |
| 7384468 | Asphalt/aggregate composition of enhanced adhesion An asphalt/aggregate composition having enhanced adhesion characteristics and its preparation. An asphalt base material is heated to a molten state in order to permit mixing of the asphalt with added components. A heavy metal soap is incorporated into the asphalt ba... | 06/10/2008 |
| 7375257 | Process for cracking an olefin-rich hydrocarbon feedstock A process for cracking an olefin containing hydrocarbon feedstock which is selective towards light olefins in the effluent, the process comprising passing a hydrocarbon feedstock containing one or more olefins through a moving bed reactor containing a crystalline si... | 05/20/2008 |
| 7371911 | Critical phase alkylation and transalkylation process in the presence of a beta zeolite A process for the production of ethylbenzene by the ethylation of benzene in the critical phase in a reaction zone containing a molecular sieve aromatic alkylation catalyst comprising cerium-promoted zeolite beta. A polyethylbenzene is supplied into the reaction zon... | 05/13/2008 |
| 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 |
| 7332456 | Alpha olefin catalyst systems The present invention provides a method for varying the melting points and molecular weights of polyolefins by changing the structure of the catalyst used in the polymerization. The catalysts that are useful in the present invention are chiral, stereorigid metalloce... | 02/19/2008 |
| 7329712 | Swell control in slurry loop reactor The present invention discloses a method for controlling the onset and development of swelling in a slurry loop reactor by progressively diluting the reactor, the amount of dilution being driven by the amplitude of the fluctuations measured on some plant measurement... | 02/12/2008 |
| 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 |
| 7309678 | Polyamide supported metallocene catalysts Supported stereospecific catalysts and processes for the stereotactic propagation of a polymer chain derived from ethylenically unsaturated monomers such as the polymerization of propylene to produce syndiotactic polypropylene or isotactic polypropylene. The support... | 12/18/2007 |
| 7300901 | Hollow beads of polyethylene The present invention discloses a method for preparing hollow beads of polyethylene of controlled morphology and size. ... | 11/27/2007 |
| 7294604 | Hydrogenation and dehydrogenation processes and catalysts therefor A process for hydrogenating unsaturations in petrochemical feedstocks, the process comprising contacting the petrochemical feedstock, including at least one component having unsaturations, and hydrogen with a catalyst comprising at least one Group Ia, Ib, IIb, VIb, ... | 11/13/2007 |
| 7285173 | Desoldering systems and processes A process for recovering a solder contaminant from a substrate surface with a wick structure comprising a plurality of heat conductive metal strands and a desoldering flux comprising a mixture of a first component of a partially polymerized rosin having a melting po... | 10/23/2007 |
| 7282544 | Olefin polymerisation process in the presence of an anti-fouling agent A propylene polymerisation process carried out in the presence of an anti-fouling agent; characterised in that the anti-fouling agent comprises an anti-fouling polymer containing: (1) one or more blocks —(CH2—CH... | 10/16/2007 |
| 7271122 | Multimodal polyethylene obtained with multilayer chromium catalyst The present invention concerns a catalyst for the production of high density polyethylene, by homopolymerising ethylene or copolymerising ethylene and an alpha-olefinic comonomer comprising 3 to 10 carbon atoms, prepared by the steps of: a) selecting a silica suppor... | 09/18/2007 |
| 7268264 | Critical phase alkylation process A process for the production of ethylbenzene by the ethylation of benzene in the critical phase over a molecular sieve aromatic alkylation catalyst. An aromatic feedstock having a benzene content of at least 90 wt. % is supplied into a reaction zone into contact wit... | 09/11/2007 |
| 7265184 | Polymer hydrogenation process A process for hydrogenating unsaturations in polymers, the process comprising contacting at least one polymer having unsaturations with a catalyst comprising at least one Group Ia, Ib, IIb, VIb, VIIb or VIII metal on a support of an alkaline earth metal silicate hav... | 09/04/2007 |
| 7259283 | Alkylation and catalyst regenerative process A process for the regeneration of a deactivated zeolite beta catalyst such as rare earth promoted zeolite beta catalyst deactivated in the course of an aromatic alkylation reaction. A zeolite beta conversion catalyst deactivated with the deposition of coke is heated... | 08/21/2007 |
| 7250478 | Silicon containing cyclopentadienyl ring for metallocene catalyst components The present invention refers to a metallocene catalyst component for producing polyolefins according to formula (I) R″s (CpRn)g (CpRn) M Q3-g (I) or according to formula (II) R″(CpRn)MeXQ (II) whe... | 07/31/2007 |
| 7250474 | Physical blends of polyethylenes This invention discloses a process for the preparation of polyethylene resins having a narrow molecular weight distribution that comprises the steps of: (i) providing a first high molecular weight metallocene-produced linear low density polyethylene (mLLDPE) resin h... | 07/31/2007 |
| 7247680 | High shrink polyethylene films A homogeneous blend of a low density polyethylene with a metallocene-catalysed polyethylene having a density of from 0.906 g/cm3 and a Dow Rheology Index of at least 5/MI2,MI2 being the melt index measured according to ASTMD-1238 con... | 07/24/2007 |
| 7241850 | Polypropylene having improved clarity and articles prepared therefrom A polypropylene composition comprises an isotactic polypropylene homopolymer resin that is suitable to form an injected molded article exhibiting less than about 60% haze, as determined by ASTM D1003, at a thickness of 0.05 inch without clarity-enhancing agents. The... | 07/10/2007 |
| 7241849 | Group III bridged metallocene based on cyclopentadienyl-fluorenyl ligands The present invention discloses a metallocene catalyst component of formula (Flu-R″-Cp)M(η3-C3R′5)(ether)n (I) wherein Cp is a cyclopentadienyl, substituted or unsubstituted, Flu is a fluorenyl, substituted or unsubst... | 07/10/2007 |
| 7217846 | Calixarene-based guest-host assemblies for guest storage and transfer A guest host assembly comprising a host assembly formed of calixarene molecules and a guest component located within the host assembly. A crystallographic assembly of layers of the calixarene molecules and stacked along the crystallographic c axis of the assembly in... | 05/15/2007 |
| 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 |
| 7193025 | Metallocene polypropylene for rotomoulding The present invention is concerned with single layer articles produced by rotomoulding and consisting essentially of metallocene-produced syndiotactic polypropylene or isotactic random copolymer of propylene. ... | 03/20/2007 |
| 7169827 | Production of polypropylene having improved properties A process for producing polypropylene having increased melt strength, the process comprising irradiating polypropylene which has been polymerised using a Ziegler-Natta catalyst with an electron beam having an energy of at least 5 MeV and a radiation dose of at least... | 01/30/2007 |
| 7169957 | Substantially spherical supramolecular assemblies Disclosed are the general principles upon which closed molecular or ionic structural frameworks may be prepared. These frameworks are based upon the self-assembly (wherein the term self-assembly refers to the association of chemical components through inter-componen... | 01/30/2007 |
| 7152675 | Subterranean hydrogen storage process A method for the storage of hydrogen within a subterranean solid carbonaceous formation such as a coal seam. At least one well extends from the surface of the earth into the formation and a pressure gradient extends from the formation to the well to desorb methane w... | 12/26/2006 |
| 7132571 | Self-assembled calixarene-based guest-host assemblies for guest storage by van der Waals confinement A guest-host assembly having a generally spheroidal host assembly formed of trimers of calixarene molecules in a hexagonal close-packed assembly and its preparation. The calixarene trimers are associated together predominantly by van der Waals forces to provide dila... | 11/07/2006 |
| 7127853 | Process for producing polyethylene pipe resins A polyethylene resin comprising from 35 to 49 wt. % of a first polyethylene fraction of high molecular weight and from 51 to 65 wt. % of a second polyethylene fraction of low molecular weight, the first polyethylene having a density of up to 0.930 g/cm3, ... | 10/31/2006 |
| 7125937 | Polyorganosilsesquioxane supported metallocene catalysts Supported stereospecific catalysts and processes for the stereotactic propagation of a polymer chain derived from ethylenically unsaturated monomers such as the polymerization of propylene to produce syndiotactic polypropylene or isotactic polypropylene. The support... | 10/24/2006 |
| 7119139 | Modified polypropylene resins The present invention relates to polypropylene resin compositions comprising a syndiotactic polypropylene incorporating at least one particulate material or chemical additive. ... | 10/10/2006 |
| 7094856 | Process for producing polyolefin Process for the production of an oriented polyolefin film using multi-component polymer compositions. One polymer component comprises an isotactic propylene homopolymer produced by the polymerization of propylene with a Ziegler-Natta catalyst. A secondary component ... | 08/22/2006 |
| 7087155 | Production of olefins A process for cracking an olefin-rich hydrocarbon feedstock which is selective towards light olefins in the effluent, the process comprising contacting a hydrocarbon feedstock containing olefins having a first composition of at least one olefinic component with a cr... | 08/08/2006 |
| 7081506 | Ethylene polymerization employing bis-imino pyridinyl transition metal catalyst components Ethylene polymerization processes employing bis-imino pyridinyl transition metal components which exhibit C2, C2v or Cs symmetry. Catalyst components of the same or different symmetries may be employed to control polymerization characteristics and characteristics of... | 07/25/2006 |
| 7060863 | Multistage reaction system with interstage sparger systems A process and system for the vapor phase alkylation of an aromatic substrate in a multi-stage alkylation reaction zone having a plurality of series-connected catalyst beds spaced from one another to provide mixing zones between adjacent catalyst beds. A feedstock co... | 06/13/2006 |
| 7041756 | Catalyst component comprising a metallocene with two tetrahydroindenyl ligands for producing a polyolefin Provided is a catalyst component for producing a polyolefin, which catalyst component comprises a metallocene catalyst having a structure according to formula (I): (THI)2R″MQp, wherein each THI is a tetrahydroindenyl derivative which may be s... | 05/09/2006 |
