Patents by Inventor Patrick C. Chen

Patrick C. Chen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12091380
    Abstract: The present disclosure provides processes and apparatus for producing poly alpha olefins. In at least one embodiment, a process to produce a poly alpha olefin includes introducing a first olefin monomer to a first catalyst and an activator in a first reactor to form a first reactor effluent comprising olefin dimers and olefin timers. The process includes heating the first reactor effluent to form an isomerized product and introducing the isomerized product to a filtration unit to form a filtration effluent. The process may include introducing the filtration effluent to a first distillation unit to form a first distillation effluent. The process may include introducing the first distillation effluent to a second distillation unit to form a second distillation effluent. The process includes introducing the first distillation effluent and/or the second distillation effluent to a second catalyst in a second reactor to form a second reactor effluent comprising the olefin timers.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: September 17, 2024
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Monica D. Lotz, Jennifer L. Rapp, Patrick C. Chen, Md Safatul Islam
  • Publication number: 20240287225
    Abstract: In at least one embodiment, a process to produce a poly alpha-olefin (PAO) includes introducing a first alpha-olefin to a first catalyst system comprising activator and a metallocene compound into a continuous stirred tank reactor or a continuous tubular reactor under first reactor conditions to form a first reactor effluent. The first alpha-olefin is introduced to the reactor at a flow rate of about 100 g/hr or more. The first reactor effluent includes at least 60 wt % of PAO dimer and 40 wt % or less of higher oligomers, where the higher oligomers are oligomers that have a degree of polymerization of 3 or more. The process includes introducing the first reactor effluent and a second alpha-olefin to a second catalyst composition including an acid catalyst in a second reactor to form a second reactor effluent comprising PAO trimer.
    Type: Application
    Filed: April 26, 2024
    Publication date: August 29, 2024
    Inventors: Patrick C. Chen, Mark H. Li, Jennifer L. Rapp, Pramod J. Nandapurkar, Brian H. Wahn, Babak Lotfizadehdehkordi, Craig J. Emett, Najeeb M. Kuzhiyil, Jian Yang
  • Publication number: 20230383022
    Abstract: Processes for making saturated isomerized polyalphaolefm by concurrently isomerizing and hydrogenating unsaturated polyalphaolefm in the presence of a high activity catalyst. Such processes can include contacting at least one unsaturated polyalphaolefm with a catalyst capable of both isomerizing and hydrogenating the polyalphaolefm, wherein the catalyst includes a zeolite or mesoporous material, the zeolite having a silica to alumina mole ratio of from about 5 to about 100 and an alpha value of from about 10 to about 1,000, and the mesoporous material having a collidine uptake of from about 100 ??moles/g to about 500 ?moles/g, wherein a Group VIB to VIIIB metal is incorporated in the catalyst at a concentration of from about 0.01 wt % to about 60.00 wt %, and wherein the zeolite is selected from the group consisting of ZSM-48, ZSM-23, ZSM-12, ZSM-35, ZSM-11, ZSM-57, Beta zeolite, Mordenite zeolite, USY zeolite, zeolite having a MWW framework, and combinations thereof.
    Type: Application
    Filed: November 8, 2021
    Publication date: November 30, 2023
    Inventors: Mark H. Li, Renyuan Yu, Patrick C. Chen, Anatoly I. Kramer, Wenyih F. Lai
  • Publication number: 20230167207
    Abstract: The present disclosure relates to processes to produce a poly alpha-olefin (PAO) composition. In some embodiments, a process includes introducing a first C6-C32 alpha-olefin, a second C6-C32 alpha-olefin different than the first C6-C32 alpha-olefin, and a first catalyst system comprising an activator and a metallocene compound into a first reactor, wherein a molar ratio of the first C6-C32 alpha-olefin to the second C6-C32 alpha-olefin is from about 1:5 to about 5:1, by total moles of the first and second C6-C32 alpha-olefin; obtaining a first effluent including a PAO dimer; introducing the first effluent, a third C6-C32 alpha-olefin, and a second catalyst system to an oligomerization unit, wherein the third C6-C32 alpha-olefin is the same or different than the first C6-C32 alpha-olefin and/or second C6-C32 alpha-olefin; obtaining a second effluent; and hydrogenating the second effluent to form the PAO composition.
    Type: Application
    Filed: April 28, 2021
    Publication date: June 1, 2023
    Inventors: Mark H. Li, Patrick C. Chen
  • Patent number: 11661465
    Abstract: The present disclosure generally relates to process to produce a poly alpha-olefin (PAO), comprising: a) introducing a first alpha-olefin to a first catalyst system comprising non-aromatic hydrocarbon soluble activator and a metallocene compound into a continuous stirred tank reactor or a continuous tubular reactor under first reactor conditions, wherein the first alpha-olefin is preferably introduced to the reactor at a flow rate of about 100 g/hr or more, to form a first reactor effluent comprising PAO (such as at least 60 wt % of PAO dimer and 40 wt % or less of higher oligomers, where the higher oligomers are oligomers that have a degree of polymerization of 3 or more); and b) introducing the first reactor effluent and a second alpha-olefin to a second catalyst composition comprising an acid catalyst, such as BF3, in a second reactor to form a second reactor effluent comprising PAO trimer.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: May 30, 2023
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jennifer L. Rapp, Patrick C. Chen, Jo Ann M. Canich, Mark H. Li, Jian Yang, Catherine A. Faler, Margaret T. Whalley, Andrew E. Atalla
  • Patent number: 11525020
    Abstract: The present disclosure generally relates to processes to produce alpha-olefin oligomers and poly alpha-olefins. In an embodiment, a process to produce a poly alpha-olefin (PAO) includes introducing a first alpha-olefin and a first catalyst system comprising a metallocene compound into a continuous stirred tank reactor or a continuous tubular reactor under first reactor conditions to form a first reactor effluent. The alpha-olefin is introduced to the reactor at a flow rate of about 100 g/hr or more. The first reactor effluent includes PAO dimer comprising at least 96 mol % of vinylidene and 4 mol % or less of trisubstituted vinylene and disubstituted vinylene, based on total moles of vinylidene, trisubstituted vinylene, and disubstituted vinylene. The method includes introducing the first reactor effluent, a second alpha-olefin and a second catalyst composition comprising an acid catalyst into a second reactor under second reactor conditions to form a second reactor effluent comprising PAO trimer.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: December 13, 2022
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Patrick C. Chen, Mark H. Li, Jennifer L. Rapp, Monica D. Lotz, Babak LotfizadehDehkordi, Craig J. Emett, Najeeb M. Kuzhiyil, Jian Yang
  • Publication number: 20220289644
    Abstract: The present disclosure provides processes and apparatus for producing poly alpha olefins. In at least one embodiment, a process to produce a poly alpha olefin includes introducing a first olefin monomer to a first catalyst and an activator in a first reactor to form a first reactor effluent comprising olefin dimers and olefin timers. The process includes heating the first reactor effluent to form an isomerized product and introducing the isomerized product to a filtration unit to form a filtration effluent. The process may include introducing the filtration effluent to a first distillation unit to form a first distillation effluent. The process may include introducing the first distillation effluent to a second distillation unit to form a second distillation effluent. The process includes introducing the first distillation effluent and/or the second distillation effluent to a second catalyst in a second reactor to form a second reactor effluent comprising the olefin timers.
    Type: Application
    Filed: June 3, 2020
    Publication date: September 15, 2022
    Inventors: Monica D. Lotz, Jennifer L. Rapp, Patrick C. Chen, Md Safatul Islam
  • Publication number: 20220267658
    Abstract: Methyl paraffins formed by hydrogenating one or more LAO dimers comprising a vinylidene moiety or a trisubstituted olefin moiety may have advantageous heat transfer properties, particularly when incorporated within an electric vehicle. For example, methyl paraffins produced upon hydrogenating LAO dimers formed from one or more C6-C12 LAOS, particularly in the presence of a Hf metallocene catalyst system, may contain 12-24 carbon atoms, and collectively have a flash point of about 130° C. or above, a pour point of about ?42° C. or lower, a thermal conductivity at 80° C. of about 0.165 W/m·K or higher, and a Mouromtseff number ranging from about 17,000 to about 27,000 kg/(s2.2·m0.6·K) at 80° C. Heat transfer fluids comprising such methyl paraffins may be placed in contact with a heat-generating component, such as a battery and/or motor of an electric vehicle, or within a similar type of battery system, including immersive configurations for a battery.
    Type: Application
    Filed: June 25, 2020
    Publication date: August 25, 2022
    Inventors: Anatoly I. Kramer, Jorg F.W. Weber, Jennifer L. Rapp, Kyle G. Lewis, Patrick C. Chen, Behrouz Engheta, Heinrich R. Braun, Babak Lotfizadehdehkordi, Tobias Klande
  • Publication number: 20220127392
    Abstract: The present disclosure generally relates to processes to produce alpha-olefin oligomers and poly alpha-olefins. In an embodiment, a process to produce a poly alpha-olefin (PAO) includes introducing a first alpha-olefin and a first catalyst system comprising a metallocene compound into a continuous stirred tank reactor or a continuous tubular reactor under first reactor conditions to form a first reactor effluent. The alpha-olefin is introduced to the reactor at a flow rate of about 100 g/hr or more. The first reactor effluent includes PAO dimer comprising at least 96 mol % of vinylidene and 4 mol % or less of trisubstituted vinylene and disubstituted vinylene, based on total moles of vinylidene, trisubstituted vinylene, and disubstituted vinylene. The method includes introducing the first reactor effluent, a second alpha-olefin and a second catalyst composition comprising an acid catalyst into a second reactor under second reactor conditions to form a second reactor effluent comprising PAO trimer.
    Type: Application
    Filed: June 28, 2021
    Publication date: April 28, 2022
    Inventors: Patrick C. Chen, Mark H. Li, Jennifer L. Rapp, Monica D. Lotz, Babak LotfizadehDehkordi, Craig J. Emett, Najeeb M. Kuzhiyil, Jian Yang
  • Publication number: 20210347921
    Abstract: The present disclosure generally relates to processes to produce alpha-olefin oligomers and poly alpha-olefins. In an embodiment, the present disclosure provides a process to produce a poly alpha-olefin (PAO), the process including: introducing a C6-C32 alpha-olefin and a catalyst system comprising activator and a metallocene compound into a continuous stirred tank reactor or a continuous tubular reactor under reaction conditions, wherein the alpha-olefin is introduced to the reactor at a flow rate of about 100 g/hr or more; and obtaining a product comprising PAO dimer and optional higher oligomers of alpha-olefin, or a combination thereof, the PAO dimer comprising 96 mol % or more of vinylidene, based on total moles of vinylidene, disubstituted vinylene, and trisubstituted vinylene in the product. In at least one embodiment, a process includes functionalizing and/or hydrogenating a PAO product of the present disclosure. In at least one embodiment, a blend includes a PAO product of the present disclosure.
    Type: Application
    Filed: May 3, 2021
    Publication date: November 11, 2021
    Inventors: Patrick C. Chen, Jennifer L. Rapp, Jian Yang, Jo Ann M. Canich, Hua Zhou, Craig J. Emett, Kyle G. Lewis, Babak LotfizadehDehkordi
  • Publication number: 20210284769
    Abstract: In at least one embodiment, a process to produce a poly alpha-olefin (PAO) includes introducing a first alpha-olefin to a first catalyst system comprising activator and a metallocene compound into a continuous stirred tank reactor or a continuous tubular reactor under first reactor conditions to form a first reactor effluent. The first alpha-olefin is introduced to the reactor at a flow rate of about 100 g/hr or more. The first reactor effluent includes at least 60 wt % of PAO dimer and 40 wt % or less of higher oligomers, where the higher oligomers are oligomers that have a degree of polymerization of 3 or more. The process includes introducing the first reactor effluent and a second alpha-olefin to a second catalyst composition including an acid catalyst in a second reactor to form a second reactor effluent comprising PAO trimer.
    Type: Application
    Filed: May 3, 2021
    Publication date: September 16, 2021
    Inventors: Patrick C. Chen, Mark H. Li, Jennifer L. Rapp, Pramod J. Nandapurkar, Brian H. Wahn, Babak LotfizadehDehkordi, Craig J. Emett, Najeeb M. Kuzhiyil, Jian Yang
  • Patent number: 11078308
    Abstract: The present disclosure generally relates to processes to produce alpha-olefin oligomers and poly alpha-olefins. In an embodiment, a process to produce a poly alpha-olefin (PAO) includes introducing a first alpha-olefin and a first catalyst system comprising a metallocene compound into a continuous stirred tank reactor or a continuous tubular reactor under first reactor conditions to form a first reactor effluent. The alpha-olefin is introduced to the reactor at a flow rate of about 100 g/hr or more. The first reactor effluent includes PAO dimer comprising at least 96 mol % of vinylidene and 4 mol % or less of trisubstituted vinylene and disubstituted vinylene, based on total moles of vinylidene, trisubstituted vinylene, and disubstituted vinylene. The method includes introducing the first reactor effluent, a second alpha-olefin and a second catalyst composition comprising an acid catalyst into a second reactor under second reactor conditions to form a second reactor effluent comprising PAO trimer.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: August 3, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Patrick C. Chen, Mark H. Li, Jennifer L. Rapp, Monica D. Lotz, Babak LotfizadehDehkordi, Craig J. Emett, Najeeb M. Kuzhiyil, Jian Yang
  • Patent number: 11028197
    Abstract: In at least one embodiment, a process to produce a poly alpha-olefin (PAO) includes introducing a first alpha-olefin to a first catalyst system comprising activator and a metallocene compound into a continuous stirred tank reactor or a continuous tubular reactor under first reactor conditions to form a first reactor effluent. The first alpha-olefin is introduced to the reactor at a flow rate of about 100 g/hr or more. The first reactor effluent includes at least 60 wt % of PAO dimer and 40 wt % or less of higher oligomers, where the higher oligomers are oligomers that have a degree of polymerization of 3 or more. The process includes introducing the first reactor effluent and a second alpha-olefin to a second catalyst composition including an acid catalyst in a second reactor to form a second reactor effluent comprising PAO trimer.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: June 8, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Patrick C. Chen, Mark H. Li, Jennifer L. Rapp, Pramod J. Nandapurkar, Brian H. Wahn, Babak LotfizadehDehkordi, Craig J. Emett, Najeeb M. Kuzhiyil, Jian Yang
  • Patent number: 11021553
    Abstract: The present disclosure generally relates to processes to produce alpha-olefin oligomers and poly alpha-olefins. In an embodiment, the present disclosure provides a process to produce a poly alpha-olefin (PAO), the process including: introducing a C6-C32 alpha-olefin and a catalyst system comprising activator and a metallocene compound into a continuous stirred tank reactor or a continuous tubular reactor under reaction conditions, wherein the alpha-olefin is introduced to the reactor at a flow rate of about 100 g/hr or more; and obtaining a product comprising PAO dimer and optional higher oligomers of alpha-olefin, or a combination thereof, the PAO dimer comprising 96 mol % or more of vinylidene, based on total moles of vinylidene, disubstituted vinylene, and trisubstituted vinylene in the product. In at least one embodiment, a process includes functionalizing and/or hydrogenating a PAO product of the present disclosure. In at least one embodiment, a blend includes a PAO product of the present disclosure.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: June 1, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Patrick C. Chen, Jennifer L. Rapp, Jian Yang, Jo Ann M. Canich, Hua Zhou, Craig J. Emett, Kyle G. Lewis, Babak LotfizadehDehkordi
  • Publication number: 20210122859
    Abstract: The present disclosure generally relates to process to produce a poly alpha-olefin (PAO), comprising: a) introducing a first alpha-olefin to a first catalyst system comprising non-aromatic hydrocarbon soluble activator and a metallocene compound into a continuous stirred tank reactor or a continuous tubular reactor under first reactor conditions, wherein the first alpha-olefin is preferably introduced to the reactor at a flow rate of about 100 g/hr or more, to form a first reactor effluent comprising PAO (such as at least 60 wt % of PAO dimer and 40 wt % or less of higher oligomers, where the higher oligomers are oligomers that have a degree of polymerization of 3 or more); and b) introducing the first reactor effluent and a second alpha-olefin to a second catalyst composition comprising an acid catalyst, such as BF3, in a second reactor to form a second reactor effluent comprising PAO trimer.
    Type: Application
    Filed: October 28, 2020
    Publication date: April 29, 2021
    Inventors: Jennifer L. Rapp, Patrick C. Chen, Jo Ann M Canich, Mark H. Li, Jian Yang, Catherine A. Faler, Margaret T. Whalley, Andrew E. Atalla
  • Patent number: 10968290
    Abstract: Unsaturated and hydrogenated polyalpha-olefin products can be made with a high selectivity toward vinylidenes and tri-substituted vinylenes combined, a high selectivity toward vinylidenes, and a low selectivity toward 1,2-di-substituted vinylenes by using a catalyst system comprising a metallocene compound having the following structure in the polymerization reaction:
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: April 6, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Donna J. Crowther, Patrick C. Chen, Jacqueline A. Lovell, Md Safatul Islam
  • Patent number: 10876062
    Abstract: This disclosure relates to cold cranking simulator viscosity (“CCSV”) boosting base stocks that allow flexibility for engine oil formulations to meet both high and low temperature viscosity requirements while maximizing fuel efficiency. The CCSV-boosting base stocks can include C28-C60 hydrocarbon materials, linear esters, tertiary amides, dialkyl carbonates, aromatic alcohols, and aromatic ethers. This disclosure also relates to lubricating oil formulations containing the CCSV-boosting base stocks, and a method for improving fuel efficiency in an engine by using as engine oil a lubricating oil formulation containing one or more of the CCSV-boosting base stocks.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: December 29, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Kyle G. Lewis, Patrick C. Chen, Mark P. Hagemeister, Omkar A. Namjoshi
  • Patent number: 10654766
    Abstract: This disclosure relates to a continuous process for making a dimer from a terminal olefin in the presence of a catalyst system comprising a metallocene compound and alumoxane.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: May 19, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Patrick C. Chen, Delanyo K. Seshie, Md Safatul Islam
  • Patent number: 10604462
    Abstract: This disclosure relates to a process for making an alcohol product comprising a gamma-branched alcohol from a vinylidene olefin by hydroformylation.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: March 31, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Patrick C. Chen, Kyle G. Lewis
  • Patent number: 10597347
    Abstract: This disclosure relates to neo-acids and processes for making neo-acids from a vinylidene olefin.
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: March 24, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Patrick C. Chen, Kyle G. Lewis