Assignee: Chevron Phillips Chemical Company LP

Location: The Woodlands, TX
No. of patents: 185

Number	Title	Issue Date
8183173	Fast activating catalyst A method of preparing a catalyst comprising aging a silica support in an alkaline solution to produce an alkaline aged silica support, removing at least a portion of the alkaline solution from the alkaline aged silica support to produce a dried silica support, and a...	05/22/2012
8163856	Method and system to add high shear to improve an ionic liquid catalyzed chemical reaction In an embodiment, a method is disclosed to increase the activity of an ionic liquid catalyst comprising emulsifying the ionic liquid catalyst with one or more liquid components. In an embodiment, a method is disclosed comprising introducing into a reaction zone a mo...	04/24/2012
8156913	Polyphenylene sulfide sleeve in a nylon coolant cross-over of an air intake manifold The subject invention provides a coolant cross-over for circulating an engine coolant between a first engine component, e.g., a first cylinder head, and a second engine component, e.g., a second cylinder head. The coolant cross-over defines a first outlet in fluid c...	04/17/2012
8148545	Processes for the synthesis of γ nitrocarbonyl and γ dicarbonyl compounds and their pyrrole derivatives The present invention discloses processes for producing γ-nitrocarbonyl and γ-dicarbonyl compounds, which can be precursors in the synthesis of pyrrole compounds. A process for producing pyrroles such as 2,5-dimethylpyrrole, and structurally similar pyrrole compou...	04/03/2012
8143430	Nano-linked heteronuclear metallocene catalyst compositions and their polymer products The present invention provides polymerization catalyst compositions employing novel heterodinuclear metallocene compounds. Methods for making these new dinuclear metallocene compounds and for using such compounds in catalyst compositions for the polymerization of ol...	03/27/2012
8143183	Nano-linked metallocene catalyst compositions and their polymer products The present invention provides polymerization catalyst compositions employing novel dinuclear metallocene compounds. Methods for making these new dinuclear metallocene compounds and for using such compounds in catalyst compositions for the polymerization and copolym...	03/27/2012
8138113	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...	03/20/2012
8128877	Energy efficient polyolefin process A manufacturing process for producing polyolefin, having a feed system, a reactor system including at least one polymerization reactor, a diluent/monomer recovery system, a fractionation system, and an extrusion/loadout system having an extruder. The manufacturing p...	03/06/2012
8119553	Polymerization catalysts for producing polymers with low melt elasticity The present techniques relate to catalyst compositions, methods, and polymers encompassing a Group 4 metallocene compound comprising bridging η5-cyclopentadienyl-type ligands, typically in combination with a cocatalyst, and a activator. The compositions ...	02/21/2012
8119203	Method of treating a surface to protect the same A method of treating a substrate by applying a layer of at least one metal to the substrate to form an applied metal layer on the substrate and followed by curing of the applied metal layer at sub-atmospheric pressure to form a metal protective layer. A method of tr...	02/21/2012
8114946	Process for producing broader molecular weight distribution polymers with a reverse comonomer distribution and low levels of long chain branches The present invention provides a polymerization process which is conducted by contacting an olefin monomer and at least one olefin comonomer in the presence of hydrogen and a metallocene-based catalyst composition. Polymers produced from the polymerization process a...	02/14/2012
8114353	Continuous catalyst activator Methods and systems for preparing catalyst, such as chromium catalysts, are provided. The valence of at least a portion of the catalyst sent to an activator is changed from Cr(III) to Cr(VI). The catalyst is prepared or activated continuously using a fluidization be...	02/14/2012
8110640	Half-metallocene catalyst compositions and their polymer products The present invention provides polymerization catalyst compositions employing half-metallocene compounds with a heteroatom-containing ligand bound to the transition metal. Methods for making these hybrid metallocene compounds and for using such compounds in catalyst...	02/07/2012
8110262	Polymer compositions containing a polymer processing aid and a hindered amine light stabilizer The present invention provides polyolefin compositions containing a polyolefin resin, a hindered amine light stabilizer, and a polymer processing aid. Methods for preparing the polymer compositions, methods for using the compositions to produce articles of manufactu...	02/07/2012
8097764	Methods of isomerizing xylenes with a catalyst reduced in the presence of hydrogen and a base A xylene isomerization process includes introducing gas comprising hydrogen and a base to a reaction zone in which a catalyst comprising a Group VIII metal and a zeolite support resides. In one embodiment, the base may be formed in situ within the reaction zone from...	01/17/2012
8080681	Nano-linked metallocene catalyst compositions and their polymer products The present invention provides polymerization catalyst compositions employing novel dinuclear metallocene compounds. Methods for making these new dinuclear metallocene compounds and for using such compounds in catalyst compositions for the polymerization and copolym...	12/20/2011
8058367	Methods and systems for controlling polymer particle size Techniques are provided for producing polymer particles of a size just slightly larger than the size of polymer fines. The technique may prevent or limit the occurrence of reactor fouls associated with large polymer particles. The technique also may provide a greate...	11/15/2011
8058346	Monovinylarene conjugated diene copolymer compositions for acrylate blends The present invention relates to monovinylarene-conjugated diene copolymer compositions adapted for blendability with acrylate polymers. In some embodiments, such compositions are provided that are particularly resistant to blocking when stored in pellet form. ...	11/15/2011
8049052	System and method of deactivating and quenching an oligomerization catalyst A method of deactivate a catalyst system is described. The method may include contacting a reactor effluent comprising a catalyst system, an oligomerized olefin, and diluent with a kill agent to at least partially deactivate the catalyst system, separating the react...	11/01/2011
8043991	Selective isomerization of olefins to alkenes using a mesoporous catalyst A process for selectively making 2-alkenes from a NAO using a mesoporous catalyst that has been surface modified with a Brönsted acid compound. The Brönsted acid compound has a reactive silane connector, an organic linking group, and a Brönsted acid group. The me...	10/25/2011
8017701	Energy efficient polyolefin process A manufacturing process for producing polyolefin, having a feed system, a reactor system including at least one polymerization reactor, a diluent/monomer recovery system, a fractionation system, and an extrusion/loadout system having an extruder. The manufacturing p...	09/13/2011
8013177	Method and system for forming a precursor compound for non-bridged unsymmetric polyolefin polymerization catalyst The present techniques relates generally to polyolefin catalysts and, more specifically, to preparing a precursor compound for an unsymmetric metallocene catalyst, for using the precursor compound to prepare catalysts, and for employing the precursor compounds to pr...	09/06/2011
7999044	System and method for deinventory of polymerization reactor A flash chamber sized to receive the effluent discharged from a polyolefin reactor during normal operation of the reactor and during a reactor dump, advantageously eliminating a reactor dump tank or alternate flash tank from the equipment outlay of a polyolefin manu...	08/16/2011
7994376	Olefin oligomerization Provided is a method of oligomerizing alpha olefins. In an embodiment, an oligomerization catalyst system is contacted in at least one continuous reactor with a feed comprising olefins; an effluent comprising product olefins having at least four carbon atoms is with...	08/09/2011
7989655	Thiol ester compositions and processes for making and using same Thiol ester compositions, methods of making the thiol ester compositions, and methods of using the thiol ester compositions are provided. In some embodiments, the thiol ester compositions include thiol esters, hydroxy thiol esters and cross-linked thiol esters. The ...	08/02/2011
7981832	Methods of activating chromium catalysts New methods for activating chromium catalysts for polymerization processes decrease the amount of time required for activation and increase catalyst activity. Rapid heating to a first temperature is followed by a first hold period before heating to a higher second t...	07/19/2011
7977269	Diimine metal complexes, methods of synthesis, and methods of using in oligomerization and polymerization Novel α-diimine metal complexes, particularly iron complexes, having a phenyl sulfidyl or substituted phenyl sulfidyl metal complexing group are disclosed. The α-diimine metal complexes having a phenyl sulfidyl or substituted phenyl sulfidyl metal complexing group...	07/12/2011
7960487	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...	06/14/2011
7957947	Method and apparatus for managing volatile organic content in polyolefin The present invention relates generally to polyolefin production and to reducing volatile organic content (VOC) associated with the polyolefin. Techniques include the construction and implementation of a purge column model to calculate or estimate the VOC content in...	06/07/2011
7956139	Polymerization catalysts for producing polymers with high comonomer incorporation The present techniques relate to catalyst compositions, methods, and polymers encompassing a Group 4 metallocene compound comprising bridged η5-cyclopentadienyl-type ligands, typically in combination with a cocatalyst, and an activator. The bridged η	06/07/2011
7951889	Method and system to add high shear to improve an ionic liquid catalyzed chemical reaction In an embodiment, a method is disclosed to increase the activity of an ionic liquid catalyst comprising emulsifying the ionic liquid catalyst with one or more liquid components. In an embodiment, a method is disclosed comprising introducing into a reaction zone a mo...	05/31/2011
7951881	Polyethylene film having improved barrier properties and methods of making same A method comprising (a) providing a catalyst comprising chromium and a support having a pore volume of from about 1.7 ml/g to about 3.5 ml/g and a surface area of from about 450 m2/g to about 700 m2/g, (b) oxidizing the catalyst to form an oxid...	05/31/2011
7932425	Method of enhancing an aromatization catalyst A hydrocarbon aromatization process comprising adding a nitrogenate, an oxygenate, or both to a hydrocarbon stream to produce an enhanced hydrocarbon stream, and contacting the enhanced hydrocarbon stream with an aromatization catalyst, thereby producing an aromatiz...	04/26/2011
7919639	Nano-linked heteronuclear metallocene catalyst compositions and their polymer products The present invention provides polymerization catalyst compositions employing novel heterodinuclear metallocene compounds. Methods for making these new dinuclear metallocene compounds and for using such compounds in catalyst compositions for the polymerization of ol...	04/05/2011
7910763	Process for preparing a monocyclopentadienyl compound Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. An improved method for preparing cyclopentadienyl complexes used to produce polyolefins is also provided....	03/22/2011
7910670	Methods of preparation of an olefin oligomerization catalyst A method of making an olefin oligomerization catalyst, comprising contacting a chromium-containing compound, a heteroatomic ligand, and a metal alkyl, wherein the chromium-containing compound comprises less than about 5 weight percent chromium oligomers. A method of...	03/22/2011
7910669	Methods of preparing a polymerization catalyst A method comprising (a) contacting a support and a chromium-containing compound to form chromium-containing support, (b) heat treating the chromium-containing support in an oxidizing atmosphere to form a treated support, (c) contacting the treated support with carbo...	03/22/2011
7910666	Mercaptan-hardened epoxy polymer compositions and processes for making and using same Mercaptan-hardened epoxy polymer compositions, methods of making the mercaptan-hardened epoxy polymer compositions, and methods of using the mercaptan-hardened epoxy polymer compositions are provided. The mercaptan-hardened epoxy polymer can be produced by contactin...	03/22/2011
7906603	Polymers having broad molecular weight distributions and methods of making the same Methods of polymerizing at least one olefin include contacting the olefin with a catalyst comprising chromium and with a cocatalyst comprising a non-transition metal cyclopentadienyl (Cp) compound. The polymerization may be performed in the presence of hydrogen. Usi...	03/15/2011
7902415	Processes for dimerizing or isomerizing olefins A process for dimerizing alpha olefins comprising contacting (i) an alpha olefin having at least 3 carbon atoms, (ii) a hexadentate bimetallic catalyst, and (iii) a cocatalyst, and dimerizing the alpha olefin in a reaction zone at conditions effective to dimerize an...	03/08/2011

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Assignee: Chevron Phillips Chemical Company LP