Patents by Inventor Brian H. Wahn

Brian H. Wahn 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).

  • 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: 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: 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
  • Publication number: 20190359748
    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: August 9, 2019
    Publication date: November 28, 2019
    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