Patents by Inventor David M. Pearson

David M. Pearson 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: 20230287159
    Abstract: Embodiments of the present application are directed to procatalysts, and catalyst systems including procatalysts, including a metal-ligand complex having the structure of formula (Ia):
    Type: Application
    Filed: May 28, 2021
    Publication date: September 14, 2023
    Applicant: Dow Global Technologies LLC
    Inventors: Rhett A. Baillie, Hien Q. Do, David M. Pearson, Johnathan E. DeLorbe, Andrew M. Camelio, Philip P. Fontaine
  • Publication number: 20230272133
    Abstract: Processes of polymerizing olefin monomers. The process includes reacting ethylene and optionally one or more olefin monomers in the presence of a catalyst system, wherein the catalyst system comprises: hydrocarbyl-modified methylaluminoxane having less than 25 mole percent trihydrocarbyl aluminum compounds AlRA1RB1RC1 based on the total moles of aluminum, where RA1, RB1, and RC1 are independently linear (C1-C40)alkyl, branched (C1-C40)alkyl, or (C6-C40)aryl; and one or more procatalysts comprising a metal-ligand complex according to formula (I): (Formula (I)).
    Type: Application
    Filed: February 5, 2021
    Publication date: August 31, 2023
    Applicant: Dow Global Technologies LLC
    Inventors: David M. Pearson, Dharati Joshi Koenigs, Philip P. Fontaine
  • Publication number: 20230250202
    Abstract: Embodiments of the present application are directed to procatalysts, and catalyst systems including procatalysts, including a metal-ligand complex having the structure of formula (I):
    Type: Application
    Filed: May 28, 2021
    Publication date: August 10, 2023
    Applicant: Dow Global Technologies LLC
    Inventors: Rhett A. Baillie, Johnathan E. Delorbe, Andrew M. Camelio, Hien Q. Do, Philip P. Fontaine, David M. Pearson, Mari S. Rosen, Brad C. Bailey
  • Publication number: 20230248585
    Abstract: Provided is a reusable outer cover. The reusable outer cover is suitable for use as a cover to an absorbent article. The reusable outer cover according to embodiments disclosed herein can be a single layer. It can be fully compatible with polyethylene recycling streams and can exhibit improved, maintained, or desirable properties in comparison to existing commercially available reusable outer covers. The reusable outer cover is formed from a nonwoven, where the nonwoven comprises a bicomponent fiber comprising a first and second region.
    Type: Application
    Filed: July 6, 2021
    Publication date: August 10, 2023
    Inventors: Brenda Colegrove, Yinglong Chen, William C. Glover, David M. Pearson, Stacy L. Pesek, Jeremy Chris Reyes
  • Publication number: 20230235099
    Abstract: Embodiments of the present application are directed to procatalysts, and catalyst systems including procatalysts, including a metal-ligand complex having the structure of formula (I):
    Type: Application
    Filed: May 28, 2021
    Publication date: July 27, 2023
    Applicant: Dow Global Technologies LLC
    Inventors: Rhett A. Baillie, Hien Q. Do, David M. Pearson, Johnathan E. Delorbe, Andrew M. Camelio, Philip P. Fontaine
  • Publication number: 20230203216
    Abstract: Embodiments of the present application are directed to procatalysts, and catalyst systems including procatalysts, including a metal-ligand complex having the structure of formula (I): [Formula I].
    Type: Application
    Filed: May 28, 2021
    Publication date: June 29, 2023
    Applicant: Dow Global Technologies LLC
    Inventors: Rhett A. Baillie, David M. Pearson, Hien Q. Do, Johnathan E. DeLorbe, Philip P. Fontaine, Mari S. Rosen, Andrew M. Camelio
  • Publication number: 20230183401
    Abstract: Processes of polymerizing polyolefins and synthesis of activators. The polymerization processes include polymerizing one or more (C2-C12)?-olefin monomers in the presence of at least one catalyst and at least one co-catalyst to produce a polyolefin. The co-catalyst includes a cation and an anion, in which the anion has a structure having a vinyl terminated alkene, one boron atom or more than one boron atoms, and at least four halogen atoms. The anion of the co-catalysts is incorporated into a polymer chain of the polyolefin.
    Type: Application
    Filed: April 30, 2020
    Publication date: June 15, 2023
    Applicants: DOW GLOBAL TECHNOLOGIES LLC, THE TEXAS A&M UNIVERSITY SYSTEM
    Inventors: Richard J. Keaton, Oleg V. Ozerov, Qingheng Lai, Jerzy Klosin, Michael J. Lesniak, David M. Pearson, Todd D. Senecal, William H.H. Woodward, Sukrit Mukhopadhyay, John R. Stutzman, Susan O. Gunther
  • Publication number: 20230174693
    Abstract: Processes of polymerizing olefins. The process includes polymerizing contacting ethylene and a (C3-C40)alpha-olefin comonomer in the presence of a catalyst system comprising a procatalyst and a bimetallic activator complex. The bimetallic activator complex includes an anion and a countercation. The anion having a structure according to formula (I).
    Type: Application
    Filed: May 7, 2021
    Publication date: June 8, 2023
    Applicant: Dow Global Technologies LLC
    Inventors: Rafael Huacuja, Richard Keaton, Jerzy Klosin, Sukrit Mukhopadhyay, David M. Pearson, Todd D. Senecal, William H.H. Woodward
  • Publication number: 20230112954
    Abstract: The invention relates to oligomerization of olefins, such as ethylene, to higher olefins, such as a mixture of 1-hexene and 1-octene, using a catalyst system that comprises a) a source of chromium b) one or more activators and c) a phosphacycle-containing ligating compound. Additionally, the invention relates to a phosphacycle-containing ligating compound and a process for making said compound.
    Type: Application
    Filed: October 14, 2022
    Publication date: April 13, 2023
    Applicant: Dow Global Technologies LLC
    Inventors: Jerzy Klosin, Kara A. Milbrandt, Scott D. Boelter, David R. Wilson, Mari S. Rosen, Dean M. Welsh, Peter M. Margl, Kyoung Moo Koh, David M. Pearson, Rafael Huacuja
  • Patent number: 11623209
    Abstract: The invention relates to oligomerization of olefins, such as ethylene, to higher olefins, such as a mixture of 1-hexene and 1-octene, using a catalyst system that comprises a) a source of chromium b) one or more activators and c) a phosphacycle-containing ligating compound. Additionally, the invention relates to a phosphacycle-containing ligating compound and a process for making said compound.
    Type: Grant
    Filed: February 11, 2022
    Date of Patent: April 11, 2023
    Assignee: Dow Global Technologies LLC
    Inventors: Jerzy Klosin, Kara A. Milbrandt, Scott D. Boelter, David R. Wilson, Mari S. Rosen, Dean M. Welsh, Peter M. Margl, Kyoung Moo Koh, David M. Pearson, Rafael Huacuja
  • Publication number: 20230098987
    Abstract: Embodiments are directed towards a use of a supported gas-phase biphenylphenol polymerization catalyst to make a polymer via a gas-phase polymerization process, wherein the supported gas-phase biphenylphenol polymerization catalyst is made from a gas-phase biphenylphenol polymerization precatalyst of Formula I.
    Type: Application
    Filed: December 17, 2020
    Publication date: March 30, 2023
    Applicant: Dow Global Technologies LLC
    Inventors: Angela I. Padilla-Acevedo, Andrew J. Young, Roger L. Kuhlman, Susan Brown, Matthew E. Belowich, David R. Neithamer, Jerzy Klosin, David M. Pearson, Leslie E. O'Leary, Joseph F. DeWilde
  • Publication number: 20230002515
    Abstract: Processes of polymerizing olefin monomers using catalyst systems and catalysts systems that include a procatalyst having a structure according to formula (I):
    Type: Application
    Filed: October 20, 2020
    Publication date: January 5, 2023
    Inventors: Todd D. Senecal, David M. Pearson, Roxanne M. Jenkins
  • Patent number: 11542350
    Abstract: Embodiments of the disclosure include processes of polymerizing olefins. The process includes contacting ethylene and a (C3-C40)alpha-olefin comonomer in the presences of a catalyst system. The catalyst system comprises a procatalyst and a bimetallic activator complex. The bimetallic activator complex comprises an anion and a countercation, and the anion has a structure according to formula (I).
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: January 3, 2023
    Assignee: Dow Global Technologies LLC
    Inventors: Richard J. Keaton, Rafael Huacuja, David R. Wilson, Jerzy Klosin, David M. Pearson, Todd D. Senecal, Sukrit Mukhopadhyay, William H. H. Woodward
  • Publication number: 20220403061
    Abstract: Embodiments are directed towards the use of a supported biphenylphenol polymerization catalyst made from a biphenylphenol polymerization precatalyst of Formula I via a gas-phase or slurry-phase polymerization process under gas-phase or slurry-phase polymerization conditions to make a polymer.
    Type: Application
    Filed: November 4, 2020
    Publication date: December 22, 2022
    Applicant: Dow Global Technologies LLC
    Inventors: Angela I. Padilla-Acevedo, Andrew J. Young, Roger L. Kuhlman, Ruth Figueroa, Susan Brown, Matthew E. Belowich, David R. Neithamer, Jerzy Klosin, David M. Pearson, Mari S. Rosen, Bethany M. Neilson, Johnathan E. DeLorbe, Leslie E. O'Leary
  • Publication number: 20220389137
    Abstract: The catalyst system includes a heterogeneous procatalyst, an electron donor, and a hydrogenation procatalyst. The heterogeneous procatalyst includes a titanium species, an aluminum species, and a magnesium chloride component. The hydrogenation procatalyst has the formula Cp2TiXnTiCp2 or Cp2TiXn. In formula Cp2TiXn, each Cp is a cyclopentadienyl substituted with at least one R1, wherein R1 is (C1-C10)alkyl; and each X is independently monoanionic or neutral, wherein each X is independently (C1-C40)hydrocarbon, (C1-C40)heterohydrocarbon, (C1-C40)hydrocarbyl, (C1—C40)heterohydrocarbyl, or a halogen atom.
    Type: Application
    Filed: July 30, 2020
    Publication date: December 8, 2022
    Applicant: Dow Global Technologies LLC
    Inventors: Linfeng Chen, Kurt F. Hirsekorn, Jeffrey A. Simms, David M. Pearson
  • Patent number: 11491474
    Abstract: The invention relates to oligomerization of olefins, such as ethylene, to higher olefins, such as a mixture of 1-hexene and 1-octene, using a catalyst system that comprises a) a source of chromium b) one or more activators and c) a phosphacycle-containing ligating compound. Additionally, the invention relates to a phosphacycle-containing ligating compound and a process for making said compound.
    Type: Grant
    Filed: April 16, 2021
    Date of Patent: November 8, 2022
    Assignee: Dow Global Technologies LLC
    Inventors: Jerzy Klosin, Kara A. Milbrandt, Scott D. Boelter, David R. Wilson, Mari S. Rosen, Dean M. Welsh, Peter M. Margl, Kyoung Moo Koh, David M. Pearson, Rafael Huacuja
  • Publication number: 20220306772
    Abstract: Processes of polymerizing olefin monomers and catalyst systems. The catalyst systems include a non-hydrogen-generating post-metallocene procatalyst; a co-catalyst; and a hydrogenation procatalyst having the formula Cp2TiXnTiCp2 or Cp2TiXn, in which each Cp is cyclopentadienyl substituted with at least one (C1-C10)alkyl; each X is independently monoanionic or neutral, wherein each X is independently (C1-C40)hydrocarbon, (C1-C40)heterohydrocarbon, (C1-C40)hydrocarbyl, (C1-C40)heterohydrocarbyl, or a halogen atom; and n is 1 or 2.
    Type: Application
    Filed: July 30, 2020
    Publication date: September 29, 2022
    Applicant: Dow Global Technologies LLC
    Inventors: Linfeng Chen, David M. Pearson
  • Patent number: 11447586
    Abstract: Embodiments of this disclosure include processes of polymerizing olefins, the process comprising contacting ethylene and a (C3-C40)alpha-olefin comonomer in the presence of a catalyst system, the catalyst system comprising a Group IV metal-ligand complex and an ionic metallic activator complex, the ionic metallic activator complex comprising an anion and a countercation, the anion having a structure according to formula (I):formula (I)
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: September 20, 2022
    Assignee: Dow Global Technologies LLC
    Inventors: Richard J. Keaton, Rafael Huacuja, David R. Wilson, Jerzy Klosin, David M. Pearson, Todd D. Senecal, Sukrit Mukhopadhyay, William H. H. Woodward
  • Patent number: 11447584
    Abstract: Embodiments of this disclosure include processes of polymerizing olefins, the process comprising contacting ethylene and a (C3-C40)alpha-olefin comonomer in the presence of a catalyst system, the catalyst system comprising a Group IV metal-ligand complex and a metallic activator ionic complex, the metallic activator ionic complex comprising an anion and a countercation, the anion having a structure according to formula (I):
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: September 20, 2022
    Assignee: Dow Global Technologies LLC
    Inventors: Todd D. Senecal, Sukrit Mukhopadhyay, Richard J. Keaton, Jerzy Klosin, Rafael Huacuja, David M. Pearson, William H. H. Woodward
  • Publication number: 20220275114
    Abstract: The catalyst system includes a heterogeneous procatalyst and a hydrogenation procatalyst. The heterogeneous procatalyst includes a titanium species, an aluminum species, and a magnesium chloride component. The hydrogenation procatalyst has the formula Cp2TiX2, In formula Cp2TiX2, each Cp is a cyclopentadienyl substituted with at least one R1, wherein R1 is (C1-C10)alkyl; and each X is independently a halogen atom.
    Type: Application
    Filed: July 28, 2020
    Publication date: September 1, 2022
    Applicant: Dow Global Technologies LLC
    Inventors: Linfeng Chen, Andrew T. Heitsch, Jeffrey A. Sims, David M. Pearson, Kurt F. Hirsekorn