Patents by Inventor Donna J. Crowther

Donna J. Crowther 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: 11111325
    Abstract: Polymerization processes to produce polyolefin polymers, for example, polyethylene polymers, from catalyst systems comprising one or more olefin polymerization catalysts and at least one activator are provided. The polyolefin polymers may have a Broad Orthogonal Composition Distribution (BOCD).
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: September 7, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Donna J. Crowther, Timothy M. Boller, Richard B. Pannell, Jeanette M. Diop, Wen Li
  • Publication number: 20210198391
    Abstract: Catalyst systems and methods for making and using the same are disclosed. A catalyst composition is provided that includes a catalyst compound supported to form a supported catalyst system, the catalyst compound including: where each of R1, R2, R3, R4, R5, R6, R7 and X are as discussed herein.
    Type: Application
    Filed: March 15, 2021
    Publication date: July 1, 2021
    Applicant: Univation Technologies, LLC
    Inventors: Donna J. Crowther, C. Jeff Harlan, Jackie Lovell, Haiqing Peng
  • Patent number: 11028192
    Abstract: This invention relates to a process to polymerize olefins comprising contacting, in solution phase at a temperature of 60° C. to 200° C., ethylene, and at least one olefin comonomer with a catalyst system comprising a non-coordinating anion activator and a metallocene catalyst compound, preferably represented by the formula: and 2) obtaining ethylene polymer having an Mw greater than 100,000 g/mol, preferably greater tha 400,000 g/mol.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: June 8, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Donna J. Crowther, Hua Zhou, Jacqueline A. Lovell
  • Publication number: 20210163639
    Abstract: A catalyst system including two or more metallocene catalysts and processes for using the same to produce polyolefin polymer compositions are provided. The polyolefin polymer compositions have a good balance of a melt index ratio and normalized melt strength.
    Type: Application
    Filed: February 12, 2021
    Publication date: June 3, 2021
    Applicant: Univation Technologies, LLC
    Inventors: Ching-Tai Lue, Phillip T. Matsunaga, Donna J. Crowther
  • Patent number: 11015002
    Abstract: Polymerization processes to produce polyolefin polymers, for example, polyethylene polymers, from catalyst systems comprising one or more olefin polymerization catalysts and at least one activator are provided. The polyolefin polymers may have a Broad Orthogonal Composition Distribution (BOCD).
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: May 25, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Donna J. Crowther, Timothy M. Boller, Richard B. Pannell, Jeanette M. Diop, Wen Li
  • Patent number: 10975174
    Abstract: Catalyst systems and methods for making and using the same are disclosed. A catalyst composition is provided that includes a catalyst compound supported to form a supported catalyst system, the catalyst compound including: where each of R1, R2, R3, R4, R5, R6, R7 and X are as discussed herein.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: April 13, 2021
    Assignee: Univation Technologies, LLC
    Inventors: Donna J. Crowther, C. Jeff Harlan, Jackie Lovell, Haiqing Peng
  • Patent number: 10968290
    Abstract: Unsaturated and hydrogenated polyalpha-olefin products can be made with a high selectivity toward vinylidenes and tri-substituted vinylenes combined, a high selectivity toward vinylidenes, and a low selectivity toward 1,2-di-substituted vinylenes by using a catalyst system comprising a metallocene compound having the following structure in the polymerization reaction:
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: April 6, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Donna J. Crowther, Patrick C. Chen, Jacqueline A. Lovell, Md Safatul Islam
  • Patent number: 10954328
    Abstract: Polymerization processes to produce polyolefin polymers, for example, polyethylene polymers, from catalyst systems comprising one or more olefin polymerization catalysts and at least one activator are provided. The polyolefin polymers may have a Broad Orthogonal Composition Distribution (BOCD).
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: March 23, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Donna J. Crowther, Timothy M. Boller, Richard B. Pannell, Jeanette M. Diop, Wen Li
  • Patent number: 10947329
    Abstract: A catalyst system including two or more metallocene catalysts and processes for using the same to produce polyolefin polymer compositions are provided. The polyolefin polymer compositions have a good balance of a melt index ratio and normalized melt strength.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: March 16, 2021
    Assignee: Univation Technologies, LLC
    Inventors: Ching-Tai Lue, Phillip T. Matsunaga, Donna J. Crowther
  • Patent number: 10882932
    Abstract: In at least one embodiment, a catalyst compound is represented by Formula (I): where M is a group 4 metal. Each of R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, and R14 is independently hydrogen, or a linear or branched C1-C50 substituted or unsubstituted hydrocarbyl, halocarbyl or silylcarbyl. At least one of R1 and R3 is not hydrogen. Each X is independently a halide or C1-C50 substituted or unsubstituted hydrocarbyl, hydride, amide, alkoxide, sulfide, phosphide, halide, diene, amine, phosphine, ether, 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.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: January 5, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Donna J. Crowther, Laughlin G. McCullough, Jacqueline A. Lovell
  • Patent number: 10766975
    Abstract: This invention relates to novel transition metal catalyst compounds comprising four oxygen atoms bonded to a transition metal where two of the oxygen groups are bond to the metal by dative bonds, catalyst systems comprising such and polymerization processes using such.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: September 8, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Donna J. Crowther, Hua Zhou, Jacqueline A. Lovell
  • 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: 20200216582
    Abstract: This invention relates to a process to polymerize olefins comprising contacting, in solution phase at a temperature of 60° C. to 200° C., ethylene, and at least one olefin comonomer with a catalyst system comprising a non-coordinating anion activator and a metallocene catalyst compound, preferably represented by the formula: and 2) obtaining ethylene polymer having an Mw greater than 100,000 g/mol, preferably greater tha 400,000 g/mol.
    Type: Application
    Filed: February 12, 2018
    Publication date: July 9, 2020
    Inventors: Donna J. Crowther, Hua Zhou, Jacqueline A. Lovell
  • Patent number: 10538604
    Abstract: Catalyst systems and methods for making and using the same are disclosed. A catalyst composition is provided that includes a catalyst compound supported to form a supported catalyst system, the catalyst compound including: where each of R1, R2, R3, R4, R5, R6, R7 and X are as discussed herein.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: January 21, 2020
    Assignee: Univation Technologies, LLC
    Inventors: Donna J. Crowther, C. Jeff Harlan, Jackie Lovell, Haiqing Peng
  • Publication number: 20200002444
    Abstract: This invention relates to novel transition metal catalyst compounds comprising four oxygen atoms bonded to a transition metal where two of the oxygen groups are bond to the metal by dative bonds, catalyst systems comprising such and polymerization processes using such.
    Type: Application
    Filed: June 28, 2017
    Publication date: January 2, 2020
    Inventors: Donna J. Crowther, Hua Zhou, Jacqueline A. Lovell
  • Publication number: 20190352436
    Abstract: Catalyst systems and methods for making and using the same are disclosed. A catalyst composition is provided that includes a catalyst compound supported to form a supported catalyst system, the catalyst compound including: where each of R1, R2, R3, R4, R5, R6, R7 and X are as discussed herein.
    Type: Application
    Filed: July 30, 2019
    Publication date: November 21, 2019
    Applicant: Univation Technologies, LLC
    Inventors: Donna J. Crowther, C. Jeff Harlan, Jackie Lovell, Haiqing Peng
  • Publication number: 20190144578
    Abstract: Polymerization processes to produce polyolefin polymers, for example, polyethylene polymers, from catalyst systems comprising one or more olefin polymerization catalysts and at least one activator are provided. The polyolefin polymers may have a Broad Orthogonal Composition Distribution (BOCD).
    Type: Application
    Filed: November 14, 2018
    Publication date: May 16, 2019
    Inventors: Donna J. Crowther, Timothy M. Boller, Richard B. Pannell, Jeanette M. Diop, Wen Li
  • Publication number: 20190144579
    Abstract: Polymerization processes to produce polyolefin polymers, for example, polyethylene polymers, from catalyst systems comprising one or more olefin polymerization catalysts and at least one activator are provided. The polyolefin polymers may have a Broad Orthogonal Composition Distribution (BOCD).
    Type: Application
    Filed: November 14, 2018
    Publication date: May 16, 2019
    Inventors: Donna J. Crowther, Timothy M. Boller, Richard B. Pannell, Jeanette M. Diop, Wen Li
  • Publication number: 20190144580
    Abstract: Polymerization processes to produce polyolefin polymers, for example, polyethylene polymers, from catalyst systems comprising one or more olefin polymerization catalysts and at least one activator are provided. The polyolefin polymers may have a Broad Orthogonal Composition Distribution (BOCD).
    Type: Application
    Filed: November 14, 2018
    Publication date: May 16, 2019
    Inventors: Donna J. Crowther, Timothy M. Boller, Richard B. Pannell, Jeanette M. Diop, Wen Li
  • Patent number: 10280234
    Abstract: This invention relates to novel transition metal catalyst compounds comprising four oxygen atoms bonded to a transition metal where two of the oxygen groups are bonded to the metal by dative bonds and a silyl or germyl bridge, catalyst systems comprising such, and polymerization processes using such.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: May 7, 2019
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Donna J. Crowther, Hua Zhou, Jacqueline A. Lovell