Patents by Inventor Donald Gary Hartlen

Donald Gary Hartlen 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: 11142634
    Abstract: This disclosure relates to a continuous solution polymerization process wherein production rate is increased. Process solvent, ethylene, optional comonomers, optional hydrogen and a single site catalyst formulation are injected into a first reactor forming a first ethylene interpolymer. Process solvent, ethylene, optional comonomers, optional hydrogen and a heterogeneous catalyst formulation are injected into a second reactor forming a second ethylene interpolymer. The first and second reactors may be configured in series or parallel modes of operation. Optionally, a third ethylene interpolymer is formed in an optional third reactor, wherein an optional heterogeneous catalyst formulation may be employed. In a solution phase, the first, second and optional third ethylene interpolymers are combined, the catalyst is deactivated, the solution is passivated and following a phase separation process an ethylene interpolymer product is recovered.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: October 12, 2021
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: Fazle Sibtain, Christopher John Brooke Dobbin, Donald Gary Hartlen, Kenneth Edward Taylor, Hamidreza Khakdaman
  • Publication number: 20200165422
    Abstract: This disclosure relates to a continuous solution polymerization process wherein production rate is increased. Process solvent, ethylene, optional comonomers, optional hydrogen and a single site catalyst formulation are injected into a first reactor forming a first ethylene interpolymer. Process solvent, ethylene, optional comonomers, optional hydrogen and a heterogeneous catalyst formulation are injected into a second reactor forming a second ethylene interpolymer. The first and second reactors may be configured in series or parallel modes of operation. Optionally, a third ethylene interpolymer is formed in an optional third reactor, wherein an optional heterogeneous catalyst formulation may be employed. In a solution phase, the first, second and optional third ethylene interpolymers are combined, the catalyst is deactivated, the solution is passivated and following a phase separation process an ethylene interpolymer product is recovered.
    Type: Application
    Filed: January 24, 2020
    Publication date: May 28, 2020
    Applicant: NOVA Chemicals (International) S.A.
    Inventors: Fazle Sibtain, Christopher John Brooke Dobbin, Donald Gary Hartlen, Kenneth Edward Taylor, Hamidreza Khakdaman
  • Patent number: 10626256
    Abstract: This disclosure relates to a continuous solution polymerization process wherein production rate is increased. Process solvent, ethylene, optional comonomers, optional hydrogen and a single site catalyst formulation are injected into a first reactor forming a first ethylene interpolymer. Process solvent, ethylene, optional comonomers, optional hydrogen and a heterogeneous catalyst formulation are injected into a second reactor forming a second ethylene interpolymer. The first and second reactors may be configured in series or parallel modes of operation. A third ethylene interpolymer is formed in a third reactor, wherein an optional heterogeneous catalyst formulation may be employed. In a solution phase, the first, second and optional third ethylene interpolymers are combined, the catalyst is deactivated, the solution is passivated and following a phase separation process an ethylene interpolymer product is recovered.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: April 21, 2020
    Assignee: NOVA CHEMICALS (INTERNATIONAL) S.A.
    Inventors: Fazle Sibtain, Christopher John Brooke Dobbin, Donald Gary Hartlen, Kenneth Edward Taylor, Hamidreza Khakdaman
  • Publication number: 20160108221
    Abstract: This disclosure relates to a continuous solution polymerization process wherein production rate is increased. Process solvent, ethylene, optional comonomers, optional hydrogen and a single site catalyst formulation are injected into a first reactor forming a first ethylene interpolymer. Process solvent, ethylene, optional comonomers, optional hydrogen and a heterogeneous catalyst formulation are injected into a second reactor forming a second ethylene interpolymer. The first and second reactors may be configured in series or parallel modes of operation. Optionally, a third ethylene interpolymer is formed in an optional third reactor, wherein an optional heterogeneous catalyst formulation may be employed. In a solution phase, the first, second and optional third ethylene interpolymers are combined, the catalyst is deactivated, the solution is passivated and following a phase separation process an ethylene interpolymer product is recovered.
    Type: Application
    Filed: October 21, 2015
    Publication date: April 21, 2016
    Applicant: NOVA CHEMICALS (INTERNATIONAL) S.A.
    Inventors: Fazle Sibtain, Christopher John Brooke Dobbin, Donald Gary Hartlen, Kenneth Edward Taylor, Hamidreza Khakdaman