Patents by Inventor David F. Sanders

David F. Sanders 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: 10414887
    Abstract: A catalyst system including the reaction product of a fluorided support (such as a fluorided silica support) that preferably has not been calcined at a temperature of 400° C. or more, an activator and at least a first transition metal catalyst compound; methods of making such catalyst systems, polymerization processes using such catalyst systems and polymers made therefrom.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: September 17, 2019
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Xuan Ye, Matthew W. Holtcamp, Gregory S. Day, Matthew S. Bedoya, David F. Sanders, Laughlin G. McCullough
  • Patent number: 10351647
    Abstract: This invention relates to a process to polymerize olefins by contacting one or more olefins with a catalyst system comprising an organoaluminum treated layered silicate support, and a bridged metallocene compound and obtaining a polyolefin having a g?vis of 0.90 or more and an MIR of 30 or less.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: July 16, 2019
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Matthew W. Holtcamp, Gregory S. Day, Laughlin G. McCullough, David F. Sanders
  • Publication number: 20190168203
    Abstract: A catalyst system including the product of the combination of an unbridged Group 4 metallocene compound and a 2,6-bis(imino)pyridyl iron complex is provided. A process for the polymerization of monomers (such as olefin monomers) and a polymer produced therefrom are also provided.
    Type: Application
    Filed: November 30, 2018
    Publication date: June 6, 2019
    Inventors: Matthew W. Holtcamp, Kevin A. Stevens, Laughlin G. McCullough, David F. Sanders, Subramaniam Kuppuswamy, Matthew S. Bedoya
  • Publication number: 20190161567
    Abstract: Polyethylene compositions including at least 65 wt % ethylene derived units, based upon the total weight of the polyethylene composition, are provided. Films made from these polyethylene compositions are also provided as well as processes for making the same.
    Type: Application
    Filed: October 15, 2018
    Publication date: May 30, 2019
    Inventors: Dongming Li, Matthew W. Holtcamp, Ching-Tai Lue, Adriana S. Silva, David F. Sanders, Subramaniam Kuppuswamy, Matthew S. Bedoya
  • Publication number: 20190161559
    Abstract: Catalyst systems including more than one metallocene catalysts and processes for using the same are provided to produce polyolefin polymers such as polyethylene polymers.
    Type: Application
    Filed: October 15, 2018
    Publication date: May 30, 2019
    Inventors: Matthew W. Holtcamp, Dongming Li, Ching-Tai Lue, Adriana S. Silva, David F. Sanders, Subramaniam Kuppuswamy, Matthew S. Bedoya
  • Patent number: 10294312
    Abstract: A catalyst system comprising a combination of: 1) an activator; 2) one or more metallocene catalyst compounds; 3) a support comprising an organosilica material, which may be a mesoporous organosilica material. The organosilica material may be a polymer of at least one monomer of Formula [Z1OZ2SiCH2]3 (I), where Z1 represents a hydrogen atom, a C1-C4 alkyl group, or a bond to a silicon atom of another monomer and Z2 represents a hydroxyl group, a C1-C4 alkoxy group, a C1-C6 alkyl group, or an oxygen atom bonded to a silicon atom of another monomer. This invention further relates to processes to polymerize olefins comprising contacting one or more olefins with the above catalyst system.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: May 21, 2019
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Matthew W. Holtcamp, Gregory S. Day, David F. Sanders, David C. Calabro, Quanchang Li, Machteld M. W. Mertens
  • Publication number: 20190144575
    Abstract: Polyethylene compositions including at least 65 wt % ethylene derived units, based upon the total weight of the polyethylene composition, are provided.
    Type: Application
    Filed: October 5, 2018
    Publication date: May 16, 2019
    Inventors: Ching-Tai Lue, Adriana S. Silva, Matthew W. Holtcamp, David F. Sanders, Ryan W. Impelman, Richard E. Pequeno, Charles J. Harlan, Xuan Ye, Dongming Li, Matthew S. Bedoya
  • Publication number: 20190144576
    Abstract: Polyethylene compositions including at least 65 wt % ethylene derived units, based upon the total weight of the polyethylene composition, are provided.
    Type: Application
    Filed: October 5, 2018
    Publication date: May 16, 2019
    Inventors: Ching-Tai Lue, Adriana S. Silva, Matthew W. Holtcamp, David F. Sanders, Ryan W. Impelman, Richard E. Pequeno, Charles J. Harlan, Xuan Ye, Dongming Li, Rohan A. Hule, Matthew S. Bedoya
  • Publication number: 20190127502
    Abstract: The present disclosure provides a supported catalyst system and process for use thereof. In particular, the catalyst system includes four different catalysts, a support material and an activator. The catalyst system may be used for preparing polyolefins, such as polyethylene.
    Type: Application
    Filed: September 20, 2018
    Publication date: May 2, 2019
    Inventors: Matthew W. Holtcamp, David F. Sanders, Matthew S. Bedoya, Ching-Tai Lue
  • Publication number: 20190119413
    Abstract: Catalyst systems including more than one metallocene catalysts and processes for using the same are provided to produce polyolefin polymers such as polyethylene polymers.
    Type: Application
    Filed: August 30, 2018
    Publication date: April 25, 2019
    Inventors: Matthew W. Holtcamp, Dongming Li, Ching-Tai Lue, Adriana S. Silva, David F. Sanders, Laughlin G. McCullough, Matthew S. Bedoya, Subramaniam Kuppuswamy
  • Publication number: 20190119417
    Abstract: Polyethylene compositions including at least 65 wt % ethylene derived units, based upon the total weight of the polyethylene composition, are provided.
    Type: Application
    Filed: August 30, 2018
    Publication date: April 25, 2019
    Inventors: Dongming Li, Ching-Tai Lue, Adriana S. Silva, Matthew W. Holtcamp, David F. Sanders, Laughlin G. McCullough, Matthew S. Bedoya, Subramaniam Kuppuswamy
  • Publication number: 20190040167
    Abstract: The present disclosure provides a supported catalyst system and process for use thereof. In particular, the catalyst system includes an unbridged metallocene compound, an additional unbridged metallocene compound having a structure different than the first unbridged metallocene compound, a support material and an activator. The catalyst system may be used for preparing polyolefins.
    Type: Application
    Filed: June 22, 2018
    Publication date: February 7, 2019
    Inventors: Matthew W. Holtcamp, Laughlin G. McCullough, Matthew S. Bedoya, David F. Sanders, Charles J. Harlan, Ching-Tai Lue, Subramaniam Kuppuswamy
  • Publication number: 20180298127
    Abstract: This invention relates to a process to polymerize olefins by contacting one or more olefins with a catalyst system comprising an organoaluminum treated layered silicate support, and a bridged metallocene compound and obtaining a polyolefin having a g?vis of 0.90 or more and an MIR of 30 or less.
    Type: Application
    Filed: April 15, 2016
    Publication date: October 18, 2018
    Inventors: Matthew W. Holtcamp, Gregory S. Day, Laughlin G. McCullough, David F. Sanders
  • Publication number: 20180171040
    Abstract: This invention relates to a catalyst system comprising fluorided silica, alkylalumoxane activator and at least two metallocene catalyst compounds, where the first metallocene is a bridged monocyclopentadienyl group 4 transition metal compound and the second metallocene is a biscyclopentadientyl group 4 transition metal compound, where the fluorided support has not been calcined at a temperature of 400° C. or more, and is preferably produced using a west mixing method, such as an aqueous method.
    Type: Application
    Filed: March 10, 2016
    Publication date: June 21, 2018
    Inventors: Xuan YE, Matthew W. HOLTCAMP, Lubin LUO, Laughlin G. McCULLOUGH, Gregory S. DAY, Francis C. RIX, Jo Ann M. CANICH, David F. SANDERS, Matthew S. BEDOYA
  • Patent number: 10000593
    Abstract: A catalyst system including the reaction product of a fluorided support, an activator, and at least a first transition metal catalyst compound; methods of making such catalyst systems, polymerization processes using such catalyst systems, and polymers made therefrom.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: June 19, 2018
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Xuan Ye, Crisita Carmen H. Atienza, Matthew W. Holtcamp, David F. Sanders, Gregory S. Day, Michelle E. Titone, David A. Cano, Matthew S. Bedoya
  • Publication number: 20180162973
    Abstract: This invention relates to a process to polymerize olefins, particularly to produce ethylene polymers with internal unsaturation structures.
    Type: Application
    Filed: February 12, 2018
    Publication date: June 14, 2018
    Inventors: Matthew W. Holtcamp, Matthew S. Bedoya, Xuan Ye, David F. Sanders, Gregory S. Day, Sarah J. Mattler
  • Patent number: 9982076
    Abstract: A catalyst system including the reaction product of a fluorided support, an activator, and at least a first transition metal catalyst compound; methods of making such catalyst systems, polymerization processes using such catalyst systems, and polymers made therefrom.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: May 29, 2018
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Xuan Ye, Crisita Carmen H. Atienza, Matthew W. Holtcamp, David F. Sanders, Gregory S. Day, Michelle E. Titone, David A. Cano, Matthew S. Bedoya
  • Publication number: 20180134828
    Abstract: This invention relates to ethylene polymers obtained using a catalyst system comprising fluorided silica, alkylalumoxane activator and at least two metallocene catalyst compounds (a bridged monocyclopentadienyl group 4 transition metal compound and a biscyclopentadientyl group 4 transition metal compound), where the fluorided support has not been calcined at a temperature of 400° C. or more, and is preferably produced using a wet mixing method, such as an aqueous method. The ethylene polymers have: 1) at least 50 mol % ethylene; 2) a reversed comonomer index, mol %, (RCI,m) of 85 or more; 3) a Comonomer Distribution Ratio-2 (CDR-2,m) of the percent comonomer at the z average molecular weight divided by the percent comonomer at the weight average molecular weight plus the number average molecular weight divided by 2 ([% comonomer at Mz]/[% comonomer at ((Mw+Mn)/2)] as determined by GPC of 2.3 or more; and 4) a density of 0.91 g/cc or more.
    Type: Application
    Filed: April 19, 2016
    Publication date: May 17, 2018
    Inventors: Antonios K. DOUFAS, David F. SANDERS, Matthew W. HOLTCAMP, Xuan YE, Alexander I. NORMAN, Rohan A. HULE, Hasnain RANGWALLA
  • Publication number: 20180118860
    Abstract: This invention relates to a supported catalyst system and process for use thereof. In particular, the catalyst system includes a pyridyldiamido transition metal complex, a metallocene compound, a support material and, optionally, an activator. The catalyst system may be used for preparing multi-modal polyolefins.
    Type: Application
    Filed: March 10, 2016
    Publication date: May 3, 2018
    Inventors: Xuan YE, John R. HAGADORN, Matthew W. HOLTCAMP, Gregory S. DAY, David F. SANDERS, Carlos R. LOPEZ-BARRON
  • Publication number: 20180086859
    Abstract: This invention relates to a supported catalyst system and process for use thereof. In particular, the catalyst system includes a pyridyldiamido transition metal complex, an activator and a support material. The catalyst system may be used for preparing ultrahigh molecular weight polyolefins.
    Type: Application
    Filed: March 10, 2016
    Publication date: March 29, 2018
    Inventors: Xuan Ye, John R. Hagadorn, Matthew W. Holtcamp, Gregory S. Day, David F. Sanders