Patents by Inventor Matthew W. Holtcamp

Matthew W. Holtcamp 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: 10927204
    Abstract: The present disclosure provides iron-containing catalyst compounds having a carbene ligand. Catalyst compounds of the present disclosure can be asymmetric, having an electron donating side of the catalyst and an electron deficient side of the catalyst. In some embodiments, catalysts of the present disclosure provide catalyst productivity values of 500 gPgcat?1hr?1 or greater and polyolefins, such as polyethylene copolymers, having comonomer content of 8 wt % or greater, a g? vis value of 0.95 or greater, internal unsaturation content greater than 0.2 unsaturations per 1,000 carbons, broad orthogonal composition distribution, an Mn of 20,000 g/mol or greater, an Mw of 200,000 g/mol or greater, and an Mz/Mw from 2 to 5 or greater.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: February 23, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Matthew W. Holtcamp, Subramaniam Kuppuswamy, Matthew S. Bedoya
  • Patent number: 10927203
    Abstract: Polyethylene compositions including at least 65 wt % ethylene derived units and from 0 to 35 wt % of C3-C12 olefin comonomer derived units, based upon the total weight of the polyethylene composition are provided. The polyethylene compositions have a) an RCI,m of 100 kg/mol or greater and one or both of: b) a Tw1-Tw2 value of from ?16 to ?38° C.; and c) an Mw1/Mw2 value of at least 0.9. The polyethylene compositions may be used to manufacture articles such as films.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: February 23, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    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
  • Patent number: 10927202
    Abstract: Polyethylene compositions including at least 65 wt % ethylene derived units and from 0 to 35 wt % of C3-C12 olefin comonomer derived units, based upon the total weight of the polyethylene composition are provided. The polyethylene compositions have a) an RCI,m of 100 kg/mol or greater and one or both of: b) a Tw1-Tw2 value of from ?16 to ?38° C.; and c) an Mw1/Mw2 value of at least 0.9. The polyethylene compositions may be used to manufacture articles such as films.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: February 23, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    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
  • Patent number: 10926250
    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: Grant
    Filed: November 30, 2018
    Date of Patent: February 23, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Matthew W. Holtcamp, Kevin A. Stevens, Laughlin G. McCullough, David F. Sanders, Subramaniam Kuppuswamy, Matthew S. Bedoya
  • Patent number: 10913808
    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: Grant
    Filed: June 22, 2018
    Date of Patent: February 9, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Matthew W. Holtcamp, Laughlin G. McCullough, Matthew S. Bedoya, David F. Sanders, Charles J. Harlan, Ching-Tai Lue, Subramaniam Kuppuswamy
  • Publication number: 20210023540
    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: October 15, 2020
    Publication date: January 28, 2021
    Inventors: Matthew W. Holtcamp, Kevin A. Stevens, Laughlin G. McCullough, David F. Sanders, Subramaniam Kuppuswamy, Matthew S. Bedoya
  • Patent number: 10899860
    Abstract: The present disclosure provides processes for polymerizing olefin(s). Methods can include contacting a first composition and a second composition in a line to form a third composition. The first composition can include a contact product of a first catalyst, a second catalyst, a support, a first activator, a mineral oil. The second composition can include a contact product of an activator, a diluent, and the first catalyst or the second catalyst. Methods can include introducing the third composition from the line into a gas-phase fluidized bed reactor, introducing a condensing agent to the line and/or the reactor, exposing the third composition to polymerization conditions, and/or obtaining a polyolefin. Polyethylene compositions including at least 65 wt % ethylene derived units, based upon the total weight of the polyethylene composition, are provided.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: January 26, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Adriana S. Silva, Matthew W. Holtcamp, Ryan W. Impelman, Richard E. Pequeno, Kevin A. Stevens, Charles J. Harlan, Xuan Ye
  • Publication number: 20210016265
    Abstract: This invention relates to a supported catalyst system comprising a first iron based catalyst, a second group 4 metal catalyst, a support material, and an activator; wherein the first catalyst is represented by Formula (I) and the second catalyst is represented by Formula (II):
    Type: Application
    Filed: June 23, 2020
    Publication date: January 21, 2021
    Inventors: Matthew W. Holtcamp, Crisita Carmen H. Atienza, David A. Cano, Matthew S. Bedoya
  • Patent number: 10865258
    Abstract: A mixed metallocene catalyst system can comprise at least one metallocene catalyst compound comprising a structure represented by formula (A) below and optionally at least one other metallocene catalyst compound having a structure represented by formula (B) below: A mixed metallocene catalyst system can additionally include a non-coordinating anion type activator comprising a supported alumoxane or aluminum alkyl, and optionally a scavenger. A process for making a polymeric product can comprise: contacting a C2-C22 alpha-olefin feed with the catalyst system to obtain a polymerization reaction mixture; and obtaining a polymer product from the polymerization reaction mixture. A polymer product can be made by the process.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: December 15, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Matthew W. Holtcamp, Subramaniam Kuppuswamy, Matthew S. Bedoya, Kevin A. Stevens, Ching-Tai Lue, Hasnain Rangwalla
  • Patent number: 10851187
    Abstract: A metallocene catalyst compound can comprise a structure represented by formula (F-MC) below comprising a first cyclopentadienyl ring with carbon atoms directly connected with R1, R2, R4, and R5, and a second cyclopentadienyl ring with carbon atoms directly connected with R10, R11, R12, and R13, and a bridging group (BG) directly connecting the first and second cyclopentadienyl rings A catalyst system can include the metallocene compound, a non-coordinating anion type activator comprising a supported alumoxane or aluminum alkyl, and optionally a scavenger. A process for making a polymeric product can comprise: contacting a C2-C22 alpha-olefin feed with the catalyst system to obtain a polymerization reaction mixture; and obtaining a polymer product from the polymerization reaction mixture. A polymer product can be made by the process to exhibit at least an Mn from 7000 g/mol to 70000 g/mol and a PDI from 4.1 to 9.0.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: December 1, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Matthew W. Holtcamp, Subramaniam Kuppuswamy, Matthew S. Bedoya, Kevin A. Stevens
  • Patent number: 10844150
    Abstract: The present invention provides a supported catalyst system comprising: a bridged group 4 metallocene compound, an iron compound, specifically a 2,6-bis(imino)pyridyl iron complex, a support material and an activator. The present invention further provides a process for polymerization of monomers (such as olefin monomers) comprising contacting one or more monomers with the above supported catalyst systems.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: November 24, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Matthew W. Holtcamp, Xuan Ye, Charles J. Harlan, Michelle E. Titone, Matthew S. Bedoya, Subramaniam Kuppuswamy, Hasnain Rangwalla
  • Patent number: 10829569
    Abstract: Catalyst systems with single site transition metal complexes (such as pyridyldiamido transition metal complexes), an activator, and a metal hydrocarbenyl chain transfer agent (preferably an aluminum vinyl-transfer agent) are disclosed for use in alkene polymerization.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: November 10, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: John R. Hagadorn, Jo Ann M. Canich, Matthew W. Holtcamp, Patrick J. Palafox, Ramyaa Mathialagan
  • Patent number: 10822434
    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: Grant
    Filed: August 30, 2018
    Date of Patent: November 3, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    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: 20200332031
    Abstract: The present disclosure provides bridged metallocene catalyst compounds including at least two —Si—Si— bridges, catalyst systems including such compounds, and uses thereof. Catalyst compounds of the present disclosure can be hafnium-containing compounds having one or more cyclopentadiene ligand(s) substituted with one or more silyl neopentyl groups and linked with at least two Si—Si-containing bridges. In another class of embodiments, the present disclosure is directed to polymerization processes to produce polyolefin polymers from catalyst systems including one or more olefin polymerization catalysts, at least one activator, and an optional support.
    Type: Application
    Filed: April 8, 2020
    Publication date: October 22, 2020
    Inventors: Subramaniam Kuppuswamy, Matthew W. Holtcamp, Matthew S. Bedoya, Laughlin G. McCullough
  • Patent number: 10808053
    Abstract: Polyethylene compositions including at least 65 wt % ethylene derived units, based upon the total weight of the polyethylene composition, are provided.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: October 20, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Dongming Li, Ching-Tai Lue, Adriana S. Silva, Matthew W. Holtcamp, David F. Sanders, Laughlin G. McCullough, Matthew S. Bedoya, Subramaniam Kuppuswamy
  • Patent number: 10730038
    Abstract: Disclosed herein is a catalyst compound represented by Formula (I) or Formula (II): M is a group 4 metal. Each of R1, R2, R3, R4, R5, R6, R7, R8, and R9 is independently hydrogen, or a C1-C50 substituted or unsubstituted hydrocarbyl, halocarbyl, silylcarbyl, alkoxyl, siloxyl, or one or more of R1 and R2, R2 and R3, R3 and R4, R5 and R6, R6 and R7, and R7 and R8 are joined to form cyclic a saturated or unsaturated ring. Each X is independently a halide or C1-C50 substituted or unsubstituted hydrocarbyl, hydride, amide, alkoxide, sulfide, phosphide, halide, or a combination thereof, or two Xs are joined together to form a metallocycle ring, or two Xs are joined to form a chelating ligand, a diene ligand, or an alkylidene. Also disclosed is a method for using the catalyst compound in a catalyst system to produce polyolefin polymers.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: August 4, 2020
    Assignee: ExxonMobil Chemical Patents, Inc.
    Inventors: Matthew W. Holtcamp, Matthew S. Bedoya, Subramaniam Kuppuswamy
  • Patent number: 10723819
    Abstract: This invention relates to a supported catalyst system and process for use thereof. In particular, the catalyst system includes bridged hafnium metallocene compound, an unbridged metallocene compound, a support material and an activator. The catalyst system may be used for preparing polyolefins.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: July 28, 2020
    Assignee: ExxonMobil Chemical Patents, Inc.
    Inventors: Matthew W. Holtcamp, Donna J. Crowther, Subramaniam Kuppuswamy, Matthew S. Bedoya, Laughlin G. McCullough, Ching-Tai Lue, David M. Fiscus
  • Publication number: 20200231790
    Abstract: A polyethylene composition comprising from about 0.5 to about 20 wt % of alpha-olefin derived units other than ethylene-derived units, with the balance including ethylene-derived units, total internal unsaturations (Vy1+Vy2+T1) of from about 0.10 to about 0.40 per 1000 carbon atoms, an MI of from about 0.1 to about 6 g/10 min, an HLMI of from about 5.0 to about 40 g/10 min, a density of from about 0.890 to about 0.940 g/ml, a Tw1-Tw2 value of from about ?25 to about ?20° C., an Mw1/Mw2 value of from about 1.2 to about 2.0, an Mw/Mn of from about 4.5 to about 12, an Mz/Mw of from about 2.0 to about 3.0, an Mz/Mn of from about 7.0 to about 20, and a g?(vis) greater than 0.90.
    Type: Application
    Filed: June 22, 2018
    Publication date: July 23, 2020
    Inventors: Dongming Li, Ching-Tai Lue, Adriana S. Silva, Matthew W. Holtcamp, Laughlin G. McCullough, David F. Sanders, Matthew S. Bedoya
  • Patent number: 10717790
    Abstract: This invention relates to a catalyst system including fluorided silica, alkylalumoxane activator and a bridged monocyclopentadienyl 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 mix method, particularly an aqueous method.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: July 21, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Xuan Ye, Matthew W. Holtcamp, Laughlin G. McCullough, Jo Ann M. Canich, David F. Sanders, Gregory S. Day, Michelle E. Titone
  • Patent number: 10703838
    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: Grant
    Filed: September 20, 2018
    Date of Patent: July 7, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Matthew W. Holtcamp, David F. Sanders, Matthew S. Bedoya, Ching-Tai Lue