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Chevron Phillips Chemical Company Lp
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Chevron Phillips Chemical Company Lp patents


Recent patent applications related to Chevron Phillips Chemical Company Lp. Chevron Phillips Chemical Company Lp is listed as an Agent/Assignee. Note: Chevron Phillips Chemical Company Lp may have other listings under different names/spellings. We're not affiliated with Chevron Phillips Chemical Company Lp, we're just tracking patents.

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Heat transfer in a polymerization reactor

A process comprises polymerizing an olefin monomer in a loop reactor in the presence of a catalyst and a diluent, and producing a slurry comprising solid particulate olefin polymer and diluent. The Biot number is maintained at or below about 3.0 within the loop reactor during the polymerizing process. The... Chevron Phillips Chemical Company Lp

Methods for increasing polymer production rates with halogenated hydrocarbon compounds

Methods for controlling the productivity of an olefin polymer in a polymerization reactor system using a halogenated hydrocarbon compound are disclosed. The productivity of the polymer can be increased via the addition of the halogenated hydrocarbon compound.... Chevron Phillips Chemical Company Lp

Catalyst systems and ethylene oligomerization method

A catalyst system comprising i) a 2-[(phosphinyl)aminyl] cyclic imine transition metal compound complex and ii) an organoaluminum compound. A process comprising contacting i) ethylene, ii) a catalyst system comprising (a) a 2-[(phosphinyl)aminyl] cyclic imine transition metal compound complex, and (b) an organoaluminum compound, and iii) optionally hydrogen to form an... Chevron Phillips Chemical Company Lp

Selective hydrogenation using a flow index

wherein F is the flow rate of the hydrocarbon stream into the reaction zone in units of kg/h, [CO] is the concentration of carbon monoxide in the hydrocarbon stream in units of mol %, and V is the volume of the reaction zone in units of ft3.... Chevron Phillips Chemical Company Lp

Methods for the production of alpha,beta-unsaturated carboxylic acids and salts thereof

Processes for producing an α,β-unsaturated carboxylic acid, such as acrylic acid, or a salt thereof, using solid promoters are disclosed. The solid promoters can be certain solid oxides, mixed oxides, and clays, illustrative examples of which can include alumina, zirconia, magnesia, magnesium aluminate, sepiolite, and similar materials.... Chevron Phillips Chemical Company Lp

Continuous preparation of calcined chemically-treated solid oxides

The present invention discloses a continuous calcination vessel which can be used to prepare calcined chemically-treated solid oxides from solid oxides and chemically-treated solid oxides. A process for the continuous preparation of calcined chemically-treated solid oxides is also provided. Calcined chemically-treated solid oxides disclosed herein can be used in catalyst... Chevron Phillips Chemical Company Lp

Ethylene oligomerization catalyst systems using chemically-treated solid oxides

Disclosed herein are catalyst compositions containing a heteroatomic ligand transition metal compound complex, a chemically-treated solid oxide, and an organoaluminum compound. These catalyst compositions can be used in an ethylene oligomerization process to produce a liquid oligomer product containing hexene and octene, as well as a solid polymer product with... Chevron Phillips Chemical Company Lp

Process improvements for chromium based ethylene oligomerizations

Disclosed herein are processes, systems, and reaction systems for the oligomerization of ethylene to form an oligomer product in a reaction zone using a catalyst system having i) a chromium component comprising a heteroatomic ligand chromium compound complex of the type disclosed herein, and ii) an aluminoxane. Ethylene can be... Chevron Phillips Chemical Company Lp

Reduced polymer formation for selective ethylene oligomerizations

Disclosed herein are processes, systems, and reaction systems for the oligomerization of ethylene to form an ethylene oligomer product in a reaction zone using a catalyst system having i) a chromium component comprising a heteroatomic ligand chromium compound complex of the type disclosed herein, and ii) an aluminoxane. A C3+... Chevron Phillips Chemical Company Lp

Process improvements in selective ethylene oligomerizations

Disclosed are processes, systems, and reaction systems for the oligomerization of ethylene to form an oligomer product in a reaction zone using a catalyst system having i) a chromium component comprising an N2-phosphinyl amidine chromium compound complex, an N2-phosphinyl formamidine chromium compound complex, an N2-phosphinyl guanidine chromium compound complex, or... Chevron Phillips Chemical Company Lp

Reduced polymer formation for selective ethylene oligomerizations

Disclosed are processes, systems, and reaction systems for the oligomerization of ethylene to form an ethylene oligomer product in a reaction zone using a catalyst system comprising (a) a chromium component comprising an N2-phosphinyl amidine chromium compound complex, an N2-phosphinyl formamidine chromium compound complex, an N2-phosphinyl guanidine chromium compound complex,... Chevron Phillips Chemical Company Lp

Bicyclic bridged metallocene compounds and polymers produced therefrom

Disclosed herein are catalyst compositions containing bicyclic bridged metallocene compounds. These catalyst compositions can be used for the polymerization of olefins. For example, ethylene polymers produced using these catalyst compositions can be characterized by low molecular weights and high melt flow rates, and can be produced without the addition of... Chevron Phillips Chemical Company Lp

Bicyclic bridged metallocene compounds and polymers produced therefrom

Disclosed herein are catalyst compositions containing bicyclic bridged metallocene compounds. These catalyst compositions can be used for the polymerization of olefins. For example, ethylene polymers produced using these catalyst compositions can be characterized by low molecular weights and high melt flow rates, and can be produced without the addition of... Chevron Phillips Chemical Company Lp

Mixed decyl mercaptans compositions and methods of making same

Compositions comprising branched C10 mercaptans selected from the group consisting of 5-methyl-1-mercapto-nonane, 3-propyl-1-mercapto-heptane, 4-ethyl-1-mercapto-octane, 2-butyl-1-mercapto-hexane, 5-methyl-2-mercapto-nonane, 3-propyl-2-mercapto-heptane, 4-ethyl-2-mercapto-octane, 5-methyl-5-mercapto-nonane, and combinations thereof. Compositions comprising C11+ mercaptans, wherein the C11+ mercaptans are characterized by structure R6—SH, wherein R6 is an alkyl group derived from one or more C11+ monoolefins, and wherein... Chevron Phillips Chemical Company Lp

Low pressure process for preparing low-density polyethylene

a first activator such as an organoaluminum compound; and a second activator including a solid oxide chemically-treated with an electron withdrawing anion, such as fluoride silica-alumuina. It was discovered that such the complexes could be activated in a manner to provide an active catalyst system that polymerized ethylene to form... Chevron Phillips Chemical Company Lp

Flow reactor vessels and reactor systems

The present invention discloses high pressure flow reactor vessels and associated systems. Also disclosed are processes for producing thiol compounds and sulfide compounds utilizing these flow reactor vessels.... Chevron Phillips Chemical Company Lp

Cleaning coke deposits from process equipment

A method for cleaning a coke deposit from an internal surface of a process equipment, comprising removing at least a portion of the coke deposit from the internal surface using a flexible pig comprising a plurality of bristles, without damaging a metal protective layer of the internal surface of the... Chevron Phillips Chemical Company Lp

Pressure control to reduce pump power fluctuations

In an embodiment, a polymerization process comprises circulating, with a pump, a reaction mixture slurry in a polymerization loop reactor during a polymerization process, detecting a pressure change in the reaction mixture slurry downstream of the pump, generating, by a pressure controller, a takeoff valve actuation signal for a takeoff... Chevron Phillips Chemical Company Lp

Measurement of product pellets flow rate

A process is described that includes flowing a carrier fluid through a transfer line, feeding polymer pellets into the transfer line at a feed location, measuring a first pressure value of the carrier fluid at a location in the transfer line upstream of the feed location, measuring a second pressure... Chevron Phillips Chemical Company Lp

Separations with ionic liquid solvents

Disclosed are systems and methods which provide a process stream comprising a gaseous component, capture the gaseous component from the process stream by an ionic liquid solvent of a separator, and recover a captured gaseous component from the ionic liquid solvent in a regenerator. A second gaseous component from the... Chevron Phillips Chemical Company Lp

Phosphinyl amidine compounds, metal complexes, catalyst systems, and their use to oligomerize or polymerize olefins

N2-phosphinyl amidine compounds, N2-phosphinyl amidinates, N2-phosphinyl amidine metal salt complexes, N2-phosphinyl amidinate metal salt complexes are described. Methods for making N2-phosphinyl amidine compounds, N2-phosphinyl amidinates, N2-phosphinyl amidine metal salt complexes, and N2-phosphinyl amidinate metal salt complexes are also disclosed. Catalyst systems utilizing the N2-phosphinyl amidine metal salt complexes and N2-phosphinyl... Chevron Phillips Chemical Company Lp

Unified cooling for multiple polyolefin polymerization reactors

A system and method for startup of a polyolefin reactor temperature control system having a first reactor temperature control path, a second reactor temperature control path, and a shared temperature control path. In some embodiments, during startup the second reactor temperature control path is configured to allow the temperature of... Chevron Phillips Chemical Company Lp

Peroxide treated metallocene-based polyolefins with improved melt strength

Disclosed herein are ethylene-based polymers having low densities and narrow molecular weight distributions, but high melt strengths for blown film processing. Such polymers can be produced by peroxide-treating a metallocene-catalyzed resin.... Chevron Phillips Chemical Company Lp

Mixed decyl mercaptans compositions and methods of making same

Compositions comprising branched C10 mercaptans selected from the group consisting of 5-methyl-1-mercapto-nonane, 3-propyl-1-mercapto-heptane, 4-ethyl-1-mercapto-octane, 2-butyl-1-mercapto-hexane, 5-methyl-2-mercapto-nonane, 3-propyl-2-mercapto-heptane, 4-ethyl-2-mercapto-octane, 5-methyl-5-mercapto-nonane, and combinations thereof.... Chevron Phillips Chemical Company Lp

Beta-mercaptoethanol synthesis

A process includes reacting, in a reactor having a fixed bed containing a solid catalyst which contains a heterogeneous ion exchange resin, hydrogen sulfide and ethylene oxide in the presence of the solid catalyst to yield a reaction product which contains beta-mercaptoethanol. A reactor system includes the reactor, an ethylene... Chevron Phillips Chemical Company Lp

Aromatization reactors with hydrogen removal and related reactor systems

The present invention discloses aromatization reactor vessels with hydrogen membrane tubes, and associated aromatization reactor vessel systems. Also disclosed are processes for conducting aromatization reactions utilizing these reactor vessels and systems.... Chevron Phillips Chemical Company Lp

Liquid-solid sampling system for a loop slurry reactor

Polymerization reactor systems providing integrated liquid-solid sampling systems are disclosed. Methods for operating such polymerization reactor systems and for measuring a property of the liquid portion of liquid-solid mixture are described.... Chevron Phillips Chemical Company Lp

Mercaptanized dicyclopentadiene compositions and use thereof as a mining chemical collector

The present invention discloses thiol compositions containing monothiotricyclodecenes, dithiotricyclodecanes, and intermolecular sulfide compounds, as well as mining chemical collector compositions containing such thiol compositions. Flotation processes for recovering metals, such as copper and molybdenum, from ores using the mining chemical collector compositions also are disclosed.... Chevron Phillips Chemical Company Lp

Methods for the production of alpha, beta-unsaturated carboxylic acids and salts thereof

Processes for producing an α,β-unsaturated carboxylic acid, such as acrylic acid, or a salt thereof, using treated solid oxides are disclosed. The treated solid oxides can be calcined solid oxides, metal-treated solid oxides, or metal-treated chemically-modified solid oxides, illustrative examples of which can include sodium-treated alumina, calcium-treated alumina, zinc-treated alumina,... Chevron Phillips Chemical Company Lp

Ziegler-natta - metallocene dual catalyst systems with activator-supports

Catalyst systems having both a metallocene catalyst component and a Ziegler-Natta component are disclosed. Such catalyst systems can contain a metallocene compound, an activator-support, an organoaluminum compound, and a Ziegler-Natta component comprising titanium supported on magnesium chloride.... Chevron Phillips Chemical Company Lp

Styrene-butadiene block copolymers with an internal butadiene block for tubing applications

Conjugated diene monovinylarene block copolymers containing an internal conjugated diene block and having superior kink resistance properties are disclosed. These copolymers can be used to produce tubing and other end-use articles, and can be a replacement for flexible PVC.... Chevron Phillips Chemical Company Lp

Styrene-butadiene block copolymers with an internal butadiene block for tubing applications

Conjugated diene monovinylarene block copolymers containing an internal conjugated diene block and having superior kink resistance properties are disclosed. These copolymers can be used to produce tubing and other end-use articles, and can be a replacement for flexible PVC.... Chevron Phillips Chemical Company Lp

Treater regeneration

Disclosed are embodiments of a method of regenerating a desiccant in an off-line treater of a polyolefin production process. The method may include a heating phase followed by a cooling phase. The heating phase may involve use of a regenerating gas made from heating a treated a recycle stream of... Chevron Phillips Chemical Company Lp

Aromatic alkylation using chemically-treated solid oxides

The present invention discloses processes for alkylating an aromatic compound, such as benzene or toluene, using a chemically-treated solid oxide. Suitable chemically-treated solid oxides include fluorided silica-coated alumina and fluorided-chlorided silica-coated alumina.... Chevron Phillips Chemical Company Lp

Silica-coated alumina activator-supports for metallocene catalyst compositions

Silica-coated alumina activator-supports, and catalyst compositions containing these activator-supports, are disclosed. Methods also are provided for preparing silica-coated alumina activator-supports, for preparing catalyst compositions, and for using the catalyst compositions to polymerize olefins.... Chevron Phillips Chemical Company Lp

08/10/17 / #20170225440

Multilayer polymer films having improved barrier properties

A multilayer polymer film comprising an outer skin layer, an inner seal layer and at least one core layer disposed between the inner and outer skin layer, wherein the outer skin layers comprises a metallocene-catalyzed ethylene polymer having a density of equal to or greater than about 0.945 g/cc and... Chevron Phillips Chemical Company Lp

08/10/17 / #20170226240

Inert stripping of volatile organic compounds from polymer melts

A method of removing VOCs from a molten polymer comprising: (a) polymerizing monomers in a reactor to produce a reaction mixture comprising unreacted monomers and molten polymer, (b) removing a portion of unreacted monomers from at least a portion of the reaction mixture to produce recovered monomers and degassed molten... Chevron Phillips Chemical Company Lp

07/13/17 / #20170197199

Selective hydrogenation catalyst and methods of making and using same

A composition comprising an extruded inorganic support comprising an oxide of a metal or metalloid, and at least one catalytically active metal, wherein the extruded inorganic support has pores, a total pore volume, and a pore size distribution, wherein the pore size distribution displays at least two peaks of pore... Chevron Phillips Chemical Company Lp

07/13/17 / #20170198075

Methods for making fluorided chromium (vi) catalysts, and polymerization processes using the same

Methods for preparing a fluorided chromium catalyst can include a step of calcining a supported chromium catalyst at a peak calcining temperature to produce a calcined supported chromium catalyst, followed by contacting the calcined supported chromium catalyst at a peak fluoriding temperature with a vapor comprising a fluorine-containing compound to... Chevron Phillips Chemical Company Lp

07/13/17 / #20170198413

High melt flow polypropylene homopolymers for fiber applications

Disclosed herein are high melt flow polypropylene homopolymers generally characterized by a melt flow rate ranging from 200 g/10 min to 3000 g/10 min, a ratio of Mw/Mn ranging from 2 to 5, and a peak melting point ranging from 138° C. to 151° C. These polypropylene homopolymers can be... Chevron Phillips Chemical Company Lp

07/13/17 / #20170199110

Polymer compositions having improved processability and methods of making and using same

A method of preparing a polymer article comprising determining a zero-shear viscosity for a polymer sample; sieving the polymer sample to produce a plurality of sieved polymer samples; determining a molecular weight distribution for each of the plurality of sieved polymer samples; determining a zero-shear viscosity for each of the... Chevron Phillips Chemical Company Lp

07/06/17 / #20170190811

Mixed decyl mercaptans compositions and use thereof as chain transfer agents

A chain transfer agent composition comprises at least one branched C10 mercaptan selected from 5-methyl-1-mercapto-nonane, 3-propyl-1-mercapto-heptane, 4-ethyl-1-mercapto-octane, 2-butyl-1-mercapto-hexane, 5-methyl-2-mercapto-nonane, 3-propyl-2-mercapto-heptane, 4-ethyl-2-mercapto-octane, 5-methyl-5-mercapto-nonane, or combinations thereof. The chain transfer agent composition can be a component of an emulsion polymerization mixture and can be used in a process for emulsion polymerization for... Chevron Phillips Chemical Company Lp

07/06/17 / #20170190992

Processes for preparing low viscosity lubricants

Disclosed are processes for forming an oligomer product by contacting a feedstock olefin containing trisubstituted olefins with a solid acid catalyst. The oligomer product can be formed at an oligomerization temperature in a range from −20° C. to 40° C. Polyalphaolefins produced from the oligomer product can have reduced viscosities... Chevron Phillips Chemical Company Lp

06/29/17 / #20170183276

Aromatization reactors with hydrogen removal and related reactor systems

The present invention discloses aromatization reactor vessels with hydrogen membrane tubes, and associated aromatization reactor vessel systems. Also disclosed are processes for conducting aromatization reactions utilizing these reactor vessels and systems.... Chevron Phillips Chemical Company Lp

06/29/17 / #20170183301

Mixed decyl mercaptans compositions and methods of making same

Compositions comprising branched C10 mercaptans selected from the group consisting of 5-methyl-1-mercapto-nonane, 3-propyl-1-mercapto-heptane, 4-ethyl-1-mercapto-octane, 2-butyl-1-mercapto-hexane, 5-methyl-2-mercapto-nonane, 3-propyl-2-mercapto-heptane, 4-ethyl-2-mercapto-octane, 5-methyl-5-mercapto-nonane, and combinations thereof.... Chevron Phillips Chemical Company Lp

06/22/17 / #20170174584

Olefin oligomerizations using chemically-treated solid oxides

Oligomerization processes include the steps of introducing a monomer containing a C3 to C30 olefin and a chemically-treated solid oxide into a reaction zone, and oligomerizing the monomer to form an oligomer product in the reaction zone. Fluorided silica-coated alumina and fluorided-chlorided silica-coated alumina are illustrative chemically-treated solid oxides that... Chevron Phillips Chemical Company Lp

06/15/17 / #20170166447

Hydrogen sulfide production process and related reactor vessels

The present invention discloses a hydrogen sulfide reactor vessel with an external heating system that is conductively and removably attached to an exterior portion of the reactor vessel. Also disclosed are processes for producing hydrogen sulfide utilizing the reactor vessel.... Chevron Phillips Chemical Company Lp

06/15/17 / #20170166448

System and containing an emission of sulfur trioxide

A system for containing an emission of sulfur trioxide, the system comprising a first pressurized vessel, the first pressurized vessel containing sulfur trioxide, a relief vessel containing a volume of a solvent solution, wherein the solvent solution comprises sulfolane, and a first relief conduit providing a first route of fluid... Chevron Phillips Chemical Company Lp

06/15/17 / #20170166506

Formation of alpha,beta-unsaturated carboxylic acids and salts thereof from metalalactones and anionic polyelectrolytes

This disclosure provides for routes of synthesis of acrylic acid and other α,β-unsaturated carboxylic acids and their salts, including catalytic methods. For example, there is provided a process for producing an α,β-unsaturated carboxylic acid or a salt thereof, the process comprising: (1) contacting in any order, a group 8-11 transition... Chevron Phillips Chemical Company Lp

06/08/17 / #20170158630

Beta-mercaptoethanol synthesis

A process includes reacting, in a reactor having a fixed bed containing a solid catalyst which contains a heterogeneous ion exchange resin, hydrogen sulfide and ethylene oxide in the presence of the solid catalyst to yield a reaction product which contains beta-mercaptoethanol. A reactor system includes the reactor, an ethylene... Chevron Phillips Chemical Company Lp

06/08/17 / #20170158784

Polymerization product pressures in olefin polymerization

A process for making a low density polymer in a polymerization reactor system, the process comprising polymerizing an olefin monomer, and optionally an olefin comonomer, in the presence of a diluent in a polymerization reactor to make a polymerization product slurry consisting of a liquid phase and a solid phase,... Chevron Phillips Chemical Company Lp

06/01/17 / #20170152327

Unified cooling for multiple polyolefin polymerization reactors

A system and method for a polyolefin reactor temperature control system having a first reactor temperature control path, a second reactor temperature control path, and a shared temperature control path. The shared temperature control path is configured to combine and process coolant return streams, and to provide coolant supply for... Chevron Phillips Chemical Company Lp

06/01/17 / #20170152328

Unified cooling for multiple polyolefin polymerization reactors

A system and method for startup of a polyolefin reactor temperature control system having a first reactor temperature control path, a second reactor temperature control path, and a shared temperature control path. In some embodiments, during startup the second reactor temperature control path is configured to allow the temperature of... Chevron Phillips Chemical Company Lp

05/25/17 / #20170145123

Low density polyolefin resins with low molecular weight and high molecular weight components, and films made therefrom

Disclosed herein are ethylene-based polymers produced using dual metallocene catalyst systems. These polymers have low densities, high molecular weights, and broad molecular weight distributions, as well as having the majority of the long chain branches in the lower molecular weight component of the polymer, and the majority of the short... Chevron Phillips Chemical Company Lp

05/25/17 / #20170145124

Long chain branched polymers and methods of making same

A polymer having a long chain branching content peaking at greater than about 20 long chain branches per million carbon atoms, and a polydispersity index of greater than about 10 wherein the long chain branching decreases to approximately zero at the higher molecular weight portion of the molecular weight distribution.... Chevron Phillips Chemical Company Lp

05/25/17 / #20170145125

Component separations in polymerization

A process for component separation in a polymer production system, comprising separating a polymerization product stream into a gas stream and a polymer stream, wherein the gas stream comprises ethane and unreacted ethylene, distilling the gas stream into a light hydrocarbon stream, wherein the light hydrocarbon stream comprises ethane and... Chevron Phillips Chemical Company Lp

05/25/17 / #20170145287

Fluid loss additives and methods of making and using same

A non-aqueous wellbore servicing fluid comprising a fluid loss additive wherein the fluid loss additive comprises the reaction product of (i) a functional polymer and (ii) an oligomerized fatty acid. A method of conducting an oil-field operation comprising placing a non-aqueous wellbore servicing fluid downhole wherein the non-aqueous wellbore servicing... Chevron Phillips Chemical Company Lp

05/18/17 / #20170137346

Selective hydrogenation using a flow index

wherein F is the flow rate of the hydrocarbon stream into the reaction zone in units of kg/h, [CO] is the concentration of carbon monoxide in the hydrocarbon stream in units of mol %, and V is the volume of the reaction zone in units of ft3.... Chevron Phillips Chemical Company Lp

05/18/17 / #20170137547

Processes for preparing solid metallocene-based catalyst systems

Methods for preparing metallocene-based catalyst systems containing an activator-support are disclosed. These methods can include contacting a solid metallocene compound, an activator-support, and an organoaluminum compound, resulting in catalyst systems with increased catalytic activity as compared to catalyst systems utilizing a solution of the metallocene compound.... Chevron Phillips Chemical Company Lp

05/11/17 / #20170128920

Method for preparing aromatization catalysts

A method of preparing an aromatization catalyst comprising contacting a zeolitic support with a metal-containing compound and a boron-containing compound to produce an impregnated support, and contacting the impregnated support with an activating composition to produce an aromatization catalyst, wherein the activating composition comprises a chlorine-containing compound and a fluorine-containing... Chevron Phillips Chemical Company Lp

04/27/17 / #20170114169

Dual catalyst systems for producing polymers with a broad molecular weight distribution and a uniform short chain branch distribution

Disclosed herein are ethylene-based polymers having a melt index less than 50 g/10 min, a ratio of Mw/Mn from 4 to 20, a density from 0.90 to 0.945 g/cm3, and a substantially constant short chain branch distribution. These polymers can be produced using a dual catalyst system containing a boron... Chevron Phillips Chemical Company Lp

04/06/17 / #20170096512

Polymers with improved toughness and escr for large-part blow molding applications

Disclosed herein are ethylene-based polymers having a density greater than 0.945 g/cm3, a high load melt index less than 25 g/10 min, a peak molecular weight ranging from 52,000 to 132,000 g/mol, and an environmental stress crack resistance of at least 250 hours. These polymers have the processability of chromium-based... Chevron Phillips Chemical Company Lp

03/30/17 / #20170088639

Heterogeneous ziegler-natta catalysts with fluorided silica-coated alumina

Catalyst systems containing a Ziegler-Natta catalyst component are disclosed. Such catalyst systems can contain a co-catalyst and a supported catalyst containing a fluorided silica-coated alumina, a magnesium compound, and vanadium and/or tetravalent titanium.... Chevron Phillips Chemical Company Lp

03/30/17 / #20170088646

Heterogeneous ziegler-natta catalysts with fluorided silica-coated alumina

Catalyst systems containing a Ziegler-Natta catalyst component are disclosed. Such catalyst systems can contain a co-catalyst and a supported catalyst containing a fluorided silica-coated alumina, a magnesium compound, and vanadium and/or tetravalent titanium.... Chevron Phillips Chemical Company Lp

03/23/17 / #20170080406

Methods of preparing a catalyst

A method comprising a) drying a support material comprising silica at temperature in the range of from about 150° C. to about 220° C. to form a dried support; b) contacting the dried support with methanol to form a slurried support; c) subsequent to b), cooling the slurried support to... Chevron Phillips Chemical Company Lp

Patent Packs
03/23/17 / #20170081256

Design of an ethylene oligomerization/trimerization/tetramerization reactor

A process comprises introducing an olefin monomer and a catalyst system or catalyst system components into a reaction mixture within a reaction system. The reaction system comprises: a total reaction mixture volume, and a heat exchanged portion of the reaction system comprising a heat exchanged reaction mixture volume and a... Chevron Phillips Chemical Company Lp

03/23/17 / #20170081257

Ethylene oligomerization/trimerization/tetramerization reactor

A process includes periodically or continuously introducing an olefin monomer and periodically or continuously introducing a catalyst system or catalyst system components into a reaction mixture within a reaction system, oligomerizing the olefin monomer within the reaction mixture to form an oligomer product, and periodically or continuously discharging a reaction... Chevron Phillips Chemical Company Lp

03/23/17 / #20170081439

Boron-bridged metallocene catalyst systems and polymers produced therefrom

Disclosed herein are catalyst compositions containing boron bridged, cyclopentadienyl-indenyl metallocene compounds with an alkenyl substituent. These catalyst compositions can be used for the polymerization of olefins. For example, ethylene homopolymers produced using these catalyst compositions can be characterized by a density less than 0.97 g/cm3 and a melt index greater... Chevron Phillips Chemical Company Lp

03/23/17 / #20170081457

Styrene-butadiene block copolymers with a terminal butadiene block for tubing applications

Conjugated diene monovinylarene block copolymers containing a terminal conjugated diene end block and having superior kink resistance properties are disclosed. These copolymers can be used to produce tubing and other end-use articles, and can be a replacement for flexible PVC.... Chevron Phillips Chemical Company Lp

03/23/17 / #20170081436

Polyethylene production with multiple polymerization reactors

A system and method for discharging a transfer slurry from a first polymerization reactor through a transfer line to a second polymerization reactor, the transfer slurry including at least diluent and a first polyethylene. A product slurry is discharged from the second polymerization reactor, the product slurry including at least... Chevron Phillips Chemical Company Lp

03/09/17 / #20170066857

Methods for controlling die swell in dual catalyst olefin polymerization systems

Methods for controlling the die swell of an olefin polymer produced using a dual catalyst system are disclosed. The die swell of the olefin polymer can be increased or decreased as a function of the catalyst weight ratio and the reactant molar ratio used during the olefin polymerization process.... Chevron Phillips Chemical Company Lp

03/09/17 / #20170066918

Blends of styrene-butadiene block copolymer with styrenic thermoplastic elastomers for tubing applications

Polymer compositions containing conjugated diene monovinylarene block copolymers and styrenic thermoplastic elastomers are disclosed. These compositions can be used to produce tubing having superior kink resistance properties, and can be a replacement for flexible PVC in various end-use applications, such as in sheet products, film products, tubing products, and adhesive... Chevron Phillips Chemical Company Lp

02/23/17 / #20170051087

Method for making polyalphaolefins using ionic liquid catalyzed oligomerization of olefins

Disclosed herein are embodiments of a process which generally includes contacting i) a monomer or mixture of monomers, ii) a haloaluminate ionic liquid, and iii) one or more halide components in a reaction zone, and oligomerizing the monomer or mixture of monomers in the reaction zone to form an oligomer... Chevron Phillips Chemical Company Lp

02/16/17 / #20170044275

Methods of preparation of an olefin oligomerization catalyst

... Chevron Phillips Chemical Company Lp

02/09/17 / #20170037158

Long chain branched polymers and methods of making same

A polymer having a long chain branching content peaking at greater than about 20 long chain branches per million carbon atoms, and a polydispersity index of greater than about 10 wherein the long chain branching decreases to approximately zero at the higher molecular weight portion of the molecular weight distribution.... Chevron Phillips Chemical Company Lp

02/02/17 / #20170029541

Processes for preparing metallocene-based catalyst systems

Methods for preparing single and dual metallocene catalyst systems containing an activator-support are disclosed. These methods can include precontacting of the activator-support and an organoaluminum compound, as well as sequential contacting of two different metallocene compounds to form a dual metallocene catalyst system.... Chevron Phillips Chemical Company Lp

01/26/17 / #20170022439

Liquid propylene oligomers and methods of making same

Disclosed herein are oligomerization processes using feedstocks containing propylene to produce an oligomer product, and methods for recovering a propylene oligomer from the oligomer product. The resultant propylene oligomer can be characterized by a Mn in a range from 250 to 10,000 g/mol, a viscosity index of at least 85,... Chevron Phillips Chemical Company Lp

01/26/17 / #20170023474

Use of turbidimeter for measurement of solid catalyst system component in a reactor feed

A method of monitoring a solid component of a reactor feed stream in a polymer production system, comprising (a) measuring a turbidity of the reactor feed stream, wherein the reactor feed stream comprises a solid component of a polymerization catalyst system, and (b) translating the turbidity of the reactor feed... Chevron Phillips Chemical Company Lp

01/26/17 / #20170022299

Polyethylene production with multiple polymerization reactors

... Chevron Phillips Chemical Company Lp

01/19/17 / #20170015764

Methods of preparing a catalyst

A method comprising a) calcining a silica support at temperature in the range of from about 100° C. to about 500° C. to form a precalcined silica support; b) contacting the precalcined silica support with a titanium alkoxide to form a titanated support; c) subsequent to b), contacting the titanated... Chevron Phillips Chemical Company Lp

Patent Packs
01/19/17 / #20170015769

Boron-bridged bis-indenyl metallocene catalyst systems and polymers produced therefrom

Disclosed herein are catalyst compositions containing boron bridged, bis-indenyl metallocene compounds with an alkenyl substituent. These catalyst compositions can be used for the polymerization of olefins. For example, ethylene copolymers produced using these catalyst compositions can be characterized by a density less than 0.92 g/cm3 and a melt index greater... Chevron Phillips Chemical Company Lp

01/12/17 / #20170008984

Ziegler-natta - metallocene dual catalyst systems with activator-supports

Catalyst systems having both a metallocene catalyst component and a Ziegler-Natta component are disclosed. Such catalyst systems can contain a metallocene compound, an activator-support, an organoaluminum compound, and a Ziegler-Natta component comprising titanium supported on magnesium chloride.... Chevron Phillips Chemical Company Lp

01/05/17 / #20170002122

Processes for preparing metallocene-based catalyst systems in cyclohexene

Methods for preparing metallocene-based catalyst systems containing an activator-support are disclosed. These methods are directed to contacting an activator-support, an organoaluminum compound, and a mixture containing a metallocene compound and cyclohexene or a mixture of cyclohexane and 1-hexene, resulting in catalyst systems with increased catalytic activity for the polymerization of... Chevron Phillips Chemical Company Lp

01/05/17 / #20170001167

Polyolefin production with multiple polymerization reactors

A polyolefin production system including: a first reactor configured to produce a first discharge slurry having a first polyolefin; a second reactor configured to produce a second discharge slurry having a second polyolefin; and a post-reactor treatment zone having at least a separation vessel configured to receive the second discharge... Chevron Phillips Chemical Company Lp








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