Patents Assigned to Chevron Phillips Chemicals Company LP
  • Sulfur oxoacid-substituted and phosphorus oxoacid-substituted polyaromatic resins and salts thereof as promoters in acrylate production from coupling reactions of olefins and carbon dioxide
    Patent number: 11491473
    Abstract: This disclosure provides for catalyst systems and processes for forming an ?,?-unsaturated carboxylic acid or a salt thereof. In an aspect, the catalyst system can comprise: a transition metal precursor comprising a Group 8-11 transition metal and at least one first ligand; optionally, at least one second ligand; an olefin; carbon dioxide (CO2); a diluent; and an oxoacid anion-substituted polyaromatic resin comprising a sulfonated polyaromatic resin, a phosphonated polyaromatic resin, a sulfinated polyaromatic resin, a thiosulfonated, or a thiosulfinated polyaromatic resin, and further comprising associated metal cations. Methods of regenerating the polyaromatic resin with associated metal cations are described.
    Type: Grant
    Filed: February 8, 2021
    Date of Patent: November 8, 2022
    Assignee: Chevron Phillips Chemical Company, LP
    Inventors: Pasquale Iacono, Mark L. Hlavinka
  • PYROLYSIS OF PLASTIC WASTE TO PRODUCE LIGHT GASEOUS HYDROCARBONS AND INTEGRATION WITH AN ETHYLENE CRACKER
    Publication number: 20220340820
    Abstract: Processes for using pyrolysis gas as a feedstock or a co-feedstock for making a variety of chemicals, for example, circular ethylene, circular ethylene polymers and copolymers, and other circular products. In these processes, pyrolysis reactor conditions can be selected to increase or optimized the production of pyrolysis gas over pyrolysis oil, and the pyrolysis gas which is usually used as fuel or flared can be fed downstream of the steam cracker furnace for economic use to form circular chemicals. Operating parameters of the pyrolysis unit may be adjusted to increase or decrease the proportion of pyrolysis gas relative to pyrolysis liquid as a function of their relative economic values.
    Type: Application
    Filed: April 12, 2022
    Publication date: October 27, 2022
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Ronald G. ABBOTT, Bruce D. MURRAY, Scott G. MORRISON, Bradley T. PRICE
  • Circular chemicals or polymers from pyrolyzed plastic waste and the use of mass balance accounting to allow for crediting the resultant products as circular
    Patent number: 11479726
    Abstract: This disclosure relates to the production of chemicals and plastics using pyrolysis oil from the pyrolysis of plastic waste as a co-feedstock along with a petroleum-based, fossil fuel-based, or bio-based feedstock. In an aspect, the polymers and chemicals produced according to this disclosure can be certified under International Sustainability and Carbon Certification (ISCC) provisions as circular polymers and chemicals at any point along complex chemical reaction pathways. The use of a mass balance approach which attributes the pounds of pyrolyzed plastic products derived from pyrolysis oil to any output stream of a given unit has been developed, which permits ISCC certification agency approval.
    Type: Grant
    Filed: September 28, 2021
    Date of Patent: October 25, 2022
    Assignee: Chevron Phillips Chemical Company, LP
    Inventors: Ronald G. Abbott, Scott G. Morrison, Steven R. Horlacher, Jamie N. Sutherland, Bruce D. Murray
  • Ziegler-Natta catalysts prepared from solid alkoxymagnesium halide supports
    Patent number: 11478781
    Abstract: Catalyst systems containing a titanium alkoxymagnesium halide supported catalyst component can be used for the polymerization of olefins. The catalyst can be prepared from a microcrystalline solid alkoxymagnesium halide support having a lattice spacing in the 5 nm to 15 nm range.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: October 25, 2022
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Jeffrey F. Greco, Jim B. Askew
  • Reactor jacket design
    Patent number: 11478768
    Abstract: Reactor systems, reactor coolant systems, and associated processes for polymerizing polyolefins are described. The reactor systems generally include a reactor pipe and a coolant system, in which the coolant system includes a jacket pipe surrounding at least a portion of the reactor pipe to form an annulus therebetween, at least one spacer coupling the jacket to the reactor pipe, and a coolant which flows through the annulus to remove heat from the reactor pipe. At least one of the external surface of the reactor pipe, the internal surface of the jacket, and at least one spacer, are independently modified, for example by polishing, coating, or reshaping, to reduce the fluid resistance of the coolant flow through the annulus.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: October 25, 2022
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Anurag Gupta, Scott E. Kufeld, Larry W. Ezell, Robert R. McElvain, Robert F. Parrott
  • Methods of preparing a catalyst
    Patent number: 11472897
    Abstract: A hydrogel comprising water, and a plurality of titanium-silica nanoparticle agglomerates, wherein each titanium-silica nanoparticle agglomerate is an agglomeration of titanium-silica nanoparticles, the agglomerates having an average titanium loading designated x with a coefficient of variation for the average titanium loading of less than about 1.0, wherein a silica content of the hydrogel is of from about 10 wt. % to about 35 wt. % based on a total weight of the hydrogel.
    Type: Grant
    Filed: November 3, 2021
    Date of Patent: October 18, 2022
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Max P. McDaniel, Eric D. Schwerdtfeger, Jeremy M. Praetorius
  • Pyrolysis oil reactor and process improvements for enhancing plastics recycling
    Patent number: 11473017
    Abstract: Described herein are pyrolysis systems and pyrolysis processes for achieving a lighter yield slate than provided in conventional pyrolysis systems. Aspects include: recycling a gaseous pyrolysis product into the pyrolysis reactor to enhance the mixing of the pyrolysis system reactants; installing a bottoms liquid recycle stream to better mix the pyrolysis system reactants; and/or recycling at least a portion of a heavy fraction of the gaseous pyrolysis reactor effluent from a condenser system into the pyrolysis reactor liquid. These improvements can enhance the economic viability of plastic wastes to liquid and gaseous hydrocarbon products which are used for making circular chemical and polymer products.
    Type: Grant
    Filed: September 8, 2021
    Date of Patent: October 18, 2022
    Assignee: Chevron Phillips Chemical Company LP
    Inventor: Steven R. Horlacher
  • Metallocene catalyst systems with chemically-treated solid oxides for producing ethylene-based plastomers and elastomers
    Patent number: 11466108
    Abstract: Polymerization processes for producing ethylene-based plastomers and elastomers having densities less than 0.91 g/cm3 utilize a metallocene-based catalyst system containing a chemically-treated solid oxide. These polymerization processes can be conducted in a slurry reactor, a solution reactor, and/or a gas phase reactor. Ethylene polymers produced from the polymerization process can be characterized by a density of less than 0.91 g/cm3, a CY-a parameter of less than 0.2, and a ratio of HLMI/MI of at least 30, or a density less than 0.91 g/cm3, a CY-a parameter from 0.25 to 0.75, and a ratio of Mw/Mn from 2 to 3.
    Type: Grant
    Filed: February 22, 2022
    Date of Patent: October 11, 2022
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Scott E. Kufeld, Max P. McDaniel
  • Ethylene polymerization processes and reactor systems for the production of multimodal polymers using combinations of a loop reactor and a fluidized bed reactor
    Patent number: 11466104
    Abstract: Polymerization processes and reactor systems for producing multimodal ethylene polymers are disclosed in which at least one loop reactor and at least one fluidized bed reactor are utilized. Configurations include a loop reactor in series with a fluidized bed reactor and two loop reactors in series with a fluidized bed reactor.
    Type: Grant
    Filed: April 20, 2022
    Date of Patent: October 11, 2022
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Joel A. Mutchler, Eric J. Netemeyer, Joseph A. Curren, Michael H. Treptau, Kenneth A. Dooley, Jeffrey S. Lowell, Jeffrey S. Fodor, Scott E. Kufeld
  • Polyolefin process monitoring and control
    Patent number: 11453733
    Abstract: Methods of controlling olefin polymerization reactor systems are provided herein.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: September 27, 2022
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Paul J. DesLauriers, Jeff S. Fodor, Eric J. Netemeyer, Qing Yang
  • Chromium-catalyzed production of alcohols from hydrocarbons
    Patent number: 11440865
    Abstract: Processes for converting a hydrocarbon reactant into an alcohol compound and/or a carbonyl compound are disclosed, and these processes include the steps of forming a supported chromium catalyst comprising chromium in a hexavalent oxidation state, irradiating the hydrocarbon reactant and the supported chromium catalyst with a light beam at a wavelength in the UV-visible spectrum to reduce at least a portion of the supported chromium catalyst to form a reduced chromium catalyst, and hydrolyzing the reduced chromium catalyst to form a reaction product comprising the alcohol compound and/or the carbonyl compound. The supported chromium catalyst can be formed by heat treating a supported chromium precursor, contacting a chromium precursor with a solid support while heat treating, or heat treating a solid support and then contacting a chromium precursor with the solid support.
    Type: Grant
    Filed: October 14, 2021
    Date of Patent: September 13, 2022
    Assignee: Chevron Phillips Chemical Company, LP
    Inventors: Carlos A. Cruz, Masud M. Monwar, Max P. McDaniel, Jared L. Barr, Kathy S. Clear, William C. Ellis
  • Chromium-catalyzed production of alcohols from hydrocarbons
    Patent number: 11440864
    Abstract: Processes for converting a hydrocarbon reactant into an alcohol compound and/or a carbonyl compound are disclosed, and these processes include the steps of irradiating the hydrocarbon reactant and a supported chromium catalyst comprising chromium in a hexavalent oxidation state with a light beam at a wavelength in the UV-visible spectrum to reduce at least a portion of the supported chromium catalyst to form a reduced chromium catalyst, and hydrolyzing the reduced chromium catalyst to form a reaction product comprising the alcohol compound and/or the carbonyl compound. In addition, these processes can further comprise a step of calcining all or a portion of the reduced chromium catalyst to regenerate the supported chromium catalyst.
    Type: Grant
    Filed: July 12, 2021
    Date of Patent: September 13, 2022
    Assignee: Chevron Phillips Chemical Company, LP
    Inventors: Max P. McDaniel, Carlos A. Cruz, Masud M. Monwar, Jared L. Barr, William C. Ellis
  • MULTI-REACTOR SYSTEM AND METHOD FOR PRODUCTION OF POLYETHYLENE AND ETHYLENE CO-POLYMERS
    Publication number: 20220267481
    Abstract: Multi-reactor systems for the production of low-density polyethylene (LDPE) polymers and copolymers, wherein a first reactor product stream has a total mass flow of from about 10% to about 80% of the total mass flow of the second reactor product stream, methods of using the same, and processes of monitoring the same.
    Type: Application
    Filed: February 21, 2022
    Publication date: August 25, 2022
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventor: Kenneth Alan Dooley
  • Flow bypass device for a vessel containing solid particles
    Patent number: 11420171
    Abstract: Disclosed is a flow bypass device, a reactor system containing the flow bypass device; a method for operating a fixed bed of solid particles in which gas is re-routed to an interior of the fixed bed, for example, the flow bypass device is used to bypass a portion of the solid particles; and a method for loading solid particles and a flow bypass device into a vessel. The methods and systems can use a single flow bypass device or multiple flow bypass devices that are stacked on top of one another.
    Type: Grant
    Filed: March 1, 2021
    Date of Patent: August 23, 2022
    Assignee: Chevron Phillips Chemical Company LP
    Inventor: Steven R. Horlacher
  • Processes for producing fluorided solid oxides and uses thereof in metallocene-based catalyst systems
    Patent number: 11420196
    Abstract: Disclosed herein are methods for preparing fluorided solid oxides by contacting an acidic fluorine-containing compound with an inorganic base to form an aqueous mixture having a pH of at least 4, followed by contacting a solid oxide with the aqueous mixture to produce the fluorided solid oxide. Also disclosed are methods for preparing fluorided solid oxides by contacting an acidic fluorine-containing compound with a solid oxide to produce a mixture, followed by contacting the mixture with a inorganic base to produce the fluorided solid oxide at a pH of at least about 4. The fluorided solid oxide can be used as an activator component in a catalyst system for the polymerization of olefins.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: August 23, 2022
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Max P. McDaniel, Kathy S. Clear, Qing Yang, Tony R. Crain
  • Methods for improving color stability in polyethylene resins
    Patent number: 11401405
    Abstract: Polymer compositions containing a titanated chromium-based ethylene polymer, 150-350 ppm of zinc stearate and/or calcium stearate, 50-5000 ppm of a phenolic antioxidant, 200-3000 ppm of a diphosphite antioxidant, and optionally, 200-3000 ppm of a monophosphite antioxidant, are described. These polymer compositions have improved long-term color stability, as well as lower levels of color formation after aging.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: August 2, 2022
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Justin Wade Kamplain, Elizabeth Mary Lanier
  • Chromium-based catalysts and processes for converting alkanes into higher and lower aliphatic hydrocarbons
    Patent number: 11396485
    Abstract: Processes for cracking an alkane reactant to form a lower aliphatic hydrocarbon product and for converting an alkane reactant into a higher aliphatic hydrocarbon product are disclosed, and these processes include a step of contacting the alkane reactant with a supported chromium (II) catalyst. In addition to the formation of various aliphatic hydrocarbons, such as linear alkanes, branched alkanes, 1-alkenes, and internal alkenes, aromatic hydrocarbons and hydrogen also can be produced.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: July 26, 2022
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Carlos A. Cruz, Max P. McDaniel, Masud M. Monwar, Jared L. Barr
  • Methods of preparing a catalyst with low HRVOC emissions
    Patent number: 11383222
    Abstract: A method of preparing a catalyst comprising a) drying a chrominated-silica support followed by contacting with a titanium(IV) alkoxide to form a metalized support, b) drying a metalized support followed by contacting with an aqueous alkaline solution comprising from about 3 wt. % to about 20 wt. % of a nitrogen-containing compound to form a hydrolyzed metalized support, and c) drying the hydrolyzed metalized support followed by calcination at a temperature in a range of from about 400° C. to about 1000° C. and maintaining the temperature in the range of from about 400° C. to about 1000° C. for a time period of from about 1 minute to about 24 hours to form the catalyst.
    Type: Grant
    Filed: January 20, 2022
    Date of Patent: July 12, 2022
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Max P. McDaniel, Kathy S. Clear, Eric D. Schwerdtfeger, Jeremy M. Praetorius
  • Surfactant as titanation ligand
    Patent number: 11384171
    Abstract: A pre-catalyst composition comprising: a) a silica support comprising silica wherein an amount of silica is in a range of from about 70 wt. % to about 95 wt. % based upon a total weight of the silica support; b) a titanium-containing compound wherein an amount of titanium is in a range of from about 0.1 wt. % to about 10 wt. % based upon the total weight of the silica support; c) a chromium-containing compound wherein an amount of chromium is in a range of from about 0.1 wt. % to about 10 wt. % based upon the total weight of the silica support; d) a surfactant wherein the surfactant comprises a non-ionic surfactant, a cationic surfactant, or a combination thereof, e) a carboxylate wherein the carboxylate comprises a multi carboxylate, an alpha-hydroxy carboxylate, or a combination thereof, and f) a solvent.
    Type: Grant
    Filed: September 13, 2021
    Date of Patent: July 12, 2022
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Max P. McDaniel, Kathy S. Clear, William C. Ellis, Deloris R. Gagan
  • Preparation of large pore silicas and uses thereof in chromium catalysts for olefin polymerization
    Patent number: 11384175
    Abstract: Silica composites and supported chromium catalysts having a bulk density of 0.08 to 0.4 g/mL, a total pore volume of 0.4 to 2.5 mL/g, a BET surface area of 175 to 375 m2/g, and a peak pore diameter of 10 to 80 nm are disclosed herein. These silica composites and supported chromium catalysts can be formed by combining two silica components. The first silica component can be irregularly shaped, such as fumed silica, and the second silica component can be a colloidal silica or a silicon-containing compound, and the second silica component can act as a glue to bind the silica composite together.
    Type: Grant
    Filed: September 16, 2021
    Date of Patent: July 12, 2022
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Max P. McDaniel, Kathy S. Clear, Carlton E. Ash, Stephen L. Kelly, Amanda B. Allemand