Patents by Inventor David Gordon BARTON

David Gordon BARTON 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: 20210221924
    Abstract: A heterogeneous procatalyst includes a preformed heterogeneous procatalyst and a metal-ligand complex. The preformed heterogeneous procatalyst includes a titanium species and a magnesium chloride (MgCl2) support. The metal-ligand complex has a structural formula (L)aM(Y)m(XR2)b, where M is a metal cation; each L is a neutral ligand or (?O); each Y is a halide or (C1-C20)alkyl; each XR2 is an anionic ligand in which X is a heteroatom or a heteroatom-containing functional group and R2 is (C1-C20)hydrocarbyl or (C1-C20) heterohydrocarbyl; n is 0, 1, or 2; m is 0-4; and b is 1-6. The metal-ligand complex is overall charge neutral. The heterogeneous procatalyst exhibits improved average molecular weight capability. A catalyst system includes the heterogeneous procatalyst and a cocatalyst. Processes for producing the heterogeneous procatalyst and processes for producing ethylene-based polymers utilizing the heterogeneous procatalyst are also disclosed.
    Type: Application
    Filed: May 29, 2019
    Publication date: July 22, 2021
    Applicant: Dow Global Technologies LLC
    Inventors: Linfeng Chen, Mingzhe Yu, Mehmet Demirors, Andrew T. Heitsch, Jeffrey A. Sims, David Gordon Barton, Kurt F. Hirsekorn, Peter N. Nickias
  • Publication number: 20210205785
    Abstract: A heterogeneous procatalyst includes a titanium species, a magnesium chloride component, and a chlorinating agent having a structure A(C)x(R1)3-x, where A is aluminum or boron, R1 is a (C1-C30) hydrocarbyl, and x is 1, 2, or 3. The magnesium chloride component may be thermally treated at a temperature greater than 100 C for at least 30 minutes before or after introduction of the chlorinating agent and titanium species to the heterogeneous procatalyst. The heterogeneous procatalyst having the thermally treated magnesium chloride exhibits improved average molecular weight capability. Processes for producing the heterogeneous procatalyst and processes for producing ethylene-based polymers utilizing the heterogeneous procatalyst are also disclosed.
    Type: Application
    Filed: May 23, 2019
    Publication date: July 8, 2021
    Applicant: Dow Global Technologies LLC
    Inventors: Mingzhe Yu, David Gordon Barton, Kurt F. Hirsekorn, Sadeka Onam, Peter N. Nickias, Andrew T. Heitsch, Thomas H. Peterson
  • Patent number: 10654035
    Abstract: The present disclosure provides an air-soak containing regeneration process reducing its time. The process includes (i) removing surface carbon species from a gallium-based alkane dehydrogenation catalyst in a combustion process in the presence of a fuel gas; (ii) conditioning the gallium-based alkane dehydrogenation catalyst after (i) in air-soak treatment at a temperature of 660° C. to 850° C. with (iii) a flow of oxygen-containing gas having (iv) 0.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: May 19, 2020
    Assignee: Dow Global Technologies LLC
    Inventors: Andrzej Malek, David Gordon Barton, Lin Luo
  • Publication number: 20190046968
    Abstract: The present disclosure provides an air-soak containing regeneration process reducing its time. The process includes (i) removing surface carbon species from a gallium-based alkane dehydrogenation catalyst in a combustion process in the presence of a fuel gas; (ii) conditioning the gallium-based alkane dehydrogenation catalyst after (i) in air-soak treatment at a temperature of 660° C. to 850° C. with (iii) a flow of oxygen-containing gas having (iv) 0.
    Type: Application
    Filed: February 22, 2017
    Publication date: February 14, 2019
    Applicant: Dow Global Technologies LLC
    Inventors: Andrzej MALEK, David Gordon BARTON, Lin LUO