Patents by Inventor Chi-I Kuo

Chi-I Kuo 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: 11618791
    Abstract: A method of producing a supported catalyst includes introducing a dissolved catalyst solution into a catalyst mix vessel, and after introducing the dissolved catalyst solution into the catalyst mix vessel, introducing a porous support material into the catalyst mix vessel. The catalyst mix vessel is then operated to contact the dissolved catalyst solution on the porous support material and thereby generate the supported catalyst, and the supported catalyst is discharged from the catalyst mix vessel.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: April 4, 2023
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Brian R. Berg, Handel D. Bennett, Chi-I Kuo, Robert L. Griffin, Chelsey M. Broussard, Bruce J. Savatsky
  • Patent number: 11591417
    Abstract: Provided herein are methods and systems for at least partially deactivating at least one component of a reactor effluent from gas phase polyolefin polymerization processes utilizing at least one glycol.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: February 28, 2023
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Chi-I Kuo, Bruce J. Savatsky, Micah A. McClure, Kevin M. Ferreira, Charles J. Harlan, Valerie H. Markham
  • Patent number: 11492428
    Abstract: Methods to produce heterogeneous polyethylene granules, the method including: contacting first olefin monomers and second olefin monomers with a catalyst system in a single reaction zone to produce heterogeneous polyethylene granules and recovering the heterogeneous polyethylene granules; wherein the catalyst system includes a product of a combination including: one or more catalysts having a Group 3 through Group 12 metal atom or lanthanide metal atom; at least one activator; and optionally, one or more support material compositions; and wherein the heterogeneous polyethylene granules include a product of a combination of: a first portion comprising a first polyethylene including the first olefin monomers and the second olefin monomers; a second portion including a second polyethylene including the first monomers and the second monomers; and wherein the first polyethylene has a higher second monomer weight percent than the second polyethylene, are provided.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: November 8, 2022
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Xuan Ye, Jonathan J. Schaefer, Timothy M. Boller, Christopher S. Breiner, Chi-I Kuo, Kevin A. Stevens, Logan E. Shephard, Eyerusalem H. Mamo, Evan J. Morris, Shamah Lloyd
  • Patent number: 11142591
    Abstract: A process including contacting one or more monomers, at least one catalyst system, and a condensing agent including ?10 mol % tetramethylsilane under polymerizable conditions to produce a polyolefin polymer is provided.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: October 12, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: John R. Hagadorn, Charles J. Harlan, Richard B. Pannell, Chi-I Kuo
  • Publication number: 20210179743
    Abstract: The present disclosure relates to processes for producing a catalyst composition. A process may include mixing a catalyst compound having a transition metal atom, an activator, and a support to form a supported catalyst mixture. A process may also include drying the supported catalyst mixture at a pressure of about 10 kPa or less and a temperature of about 60° C. or greater for a period of about 6 h or less. The present disclosure also relates to processes for producing polyolefins. A process may include introducing a catalyst composition and at least one olefin to a polymerization reactor, where the catalyst composition has about 0.5 wt % to about 1.5 wt % aromatic hydrocarbon content, and less than 1 wt % of aliphatic hydrocarbon content. A process may also include obtaining a polyolefin having about 300 ppb or less aromatic hydrocarbon.
    Type: Application
    Filed: November 3, 2020
    Publication date: June 17, 2021
    Inventors: Brian R. Berg, Chelsey M. Broussard, Chi-I Kuo, Porter C. Shannon
  • Publication number: 20210155723
    Abstract: A method of producing a supported catalyst includes introducing a dissolved catalyst solution into a catalyst mix vessel, and after introducing the dissolved catalyst solution into the catalyst mix vessel, introducing a porous support material into the catalyst mix vessel. The catalyst mix vessel is then operated to contact the dissolved catalyst solution on the porous support material and thereby generate the supported catalyst, and the supported catalyst is discharged from the catalyst mix vessel.
    Type: Application
    Filed: October 23, 2020
    Publication date: May 27, 2021
    Inventors: Brian R. Berg, Handel D. Bennett, Chi-I Kuo, Robert L. Griffin, Chelsey M. Broussard, Bruce J. Savatsky
  • Patent number: 11015001
    Abstract: Catalyst systems including a catalyst compound having a Group 3 through Group 12 metal atom or lanthanide metal atom, an activator, and a support material composition, are provided. The support material composition may have a volume percent of pores with a pore size of from 300 angstroms to 1500 angstroms of 10 vol % to 80 vol %. Processes for producing a polyolefin composition utilizing such catalyst systems are also provided.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: May 25, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Xuan Ye, Lubin Luo, Charles J. Harlan, Chi-I Kuo, Richard B. Pannell, William A. Lamberti
  • Patent number: 10870716
    Abstract: Methods for preparing a catalyst system that includes contacting at least one aromatic hydrocarbon, at least one activator, at least one catalyst having a Group 3 through Group 12 metal atom or lanthanide metal atom, and at least one catalyst support to form a first mixture, are provided. Methods include reducing the amount of the aromatic hydrocarbon in the first mixture to form a second mixture having 1.5 wt % or less of the aromatic hydrocarbon based on the total weight of the second mixture. Methods may further include adding a saturated hydrocarbon to the second mixture to form a third mixture.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: December 22, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventor: Chi-I Kuo
  • Publication number: 20200270375
    Abstract: Provided herein are methods and systems for at least partially deactivating at least one component of a reactor effluent from gas phase polyolefin polymerization processes utilizing at least one glycol.
    Type: Application
    Filed: October 26, 2018
    Publication date: August 27, 2020
    Inventors: Chi-I Kuo, Bruce J. Savatsky, Micah A. McClure, Kevin M. Ferreira, Charles J. Harlan, Valerie H. Markham
  • Publication number: 20200087422
    Abstract: A process including contacting one or more monomers, at least one catalyst system, and a condensing agent including ?10 mol % tetramethylsilane under polymerizable conditions to produce a polyolefin polymer is provided.
    Type: Application
    Filed: September 7, 2017
    Publication date: March 19, 2020
    Inventors: John R. Hagadorn, Charles J. Harlan, Richard B. Pannell, Chi-I Kuo
  • Publication number: 20200071438
    Abstract: A process for preparing a catalyst system including contacting one or more catalysts having a Group 3 through Group 12 metal atom or lanthanide metal atom with a methylalumoxane and one or more support material compositions to a concentration of methylalumoxane of about 4 mmol to about 15 mmol aluminum per gram of support material is provided. The support material composition may have a macroporosity of from about 0.18 cc/g to about 0.50 cc/g. In other embodiments, a process for polymerizing at least one olefin to produce a polyolefin composition including contacting one or more olefins with the aforementioned catalyst system is also provide.
    Type: Application
    Filed: February 28, 2018
    Publication date: March 5, 2020
    Inventors: Corrine L. Brandl, Fred D. Ehrman, Edward F. Smith, Chi-I Kuo
  • Patent number: 10519256
    Abstract: Supported catalyst compositions, useful in olefin polymerization, and having improved flow properties are disclosed. The catalyst compositions may be characterized by low macro pore volume and high bulk density. Methods for preparing the catalyst compositions are also disclosed.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: December 31, 2019
    Assignee: Univation Technologies, LLC
    Inventors: Richard B. Pannell, Chi-I Kuo, Shamah Lloyd
  • Publication number: 20190389988
    Abstract: Methods to produce heterogeneous polyethylene granules, the method including: contacting first olefin monomers and second olefin monomers with a catalyst system in a single reaction zone to produce heterogeneous polyethylene granules and recovering the heterogeneous polyethylene granules; wherein the catalyst system includes a product of a combination including: one or more catalysts having a Group 3 through Group 12 metal atom or lanthanide metal atom; at least one activator; and optionally, one or more support material compositions; and wherein the heterogeneous polyethylene granules include a product of a combination of: a first portion comprising a first polyethylene including the first olefin monomers and the second olefin monomers; a second portion including a second polyethylene including the first monomers and the second monomers; and wherein the first polyethylene has a higher second monomer weight percent than the second polyethylene, are provided.
    Type: Application
    Filed: June 21, 2019
    Publication date: December 26, 2019
    Inventors: Xuan Ye, Jonathan J. Schaefer, Timothy M. Boller, Christopher S. Breiner, Chi-I Kuo, Kevin A. Stevens, Logan E. Shephard, Eyerusalem H. Mamo, Evan J. Morris, Shamah Lloyd
  • Patent number: 10329364
    Abstract: Polymerization catalyst compositions are provided as are methods of their preparation. The compositions comprise fatty amines and find advantageous use in olefin polymerization processes. The catalyst composition comprises at least one supported polymerization catalyst wherein the catalyst composition is modified with at least one fatty amine wherein the fatty amine is substantially free of particulate inorganic material.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: June 25, 2019
    Assignee: Univation Technologies, LLC
    Inventors: Richard B. Pannell, David M. Glowczwski, Chi-I Kuo, Timothy R. Lynn, Fathi David Hussein, Phuong A. Cao, Wesley R. Mariott, Michael D. Awe
  • Publication number: 20180334517
    Abstract: Catalyst systems including a catalyst compound having a Group 3 through Group 12 metal atom or lanthanide metal atom, an activator, and a support material composition, are provided. The support material composition may have a volume percent of pores with a pore size of from 300 angstroms to 1500 angstroms of 10 vol % to 80 vol %. Processes for producing a polyolefin composition utilizing such catalyst systems are also provided.
    Type: Application
    Filed: April 11, 2018
    Publication date: November 22, 2018
    Inventors: Xuan Ye, Lubin Luo, Charles J. Harlan, Chi-I Kuo, Richard B. Pannell, William A. Lamberti
  • Publication number: 20180273655
    Abstract: Methods for preparing a catalyst system that includes contacting at least one aromatic hydrocarbon, at least one activator, at least one catalyst having a Group 3 through Group 12 metal atom or lanthanide metal atom, and at least one catalyst support to form a first mixture, are provided. Methods include reducing the amount of the aromatic hydrocarbon in the first mixture to form a second mixture having 1.5 wt % or less of the aromatic hydrocarbon based on the total weight of the second mixture. Methods may further include adding a saturated hydrocarbon to the second mixture to form a third mixture.
    Type: Application
    Filed: February 28, 2018
    Publication date: September 27, 2018
    Inventor: Chi-I Kuo
  • Patent number: 10035868
    Abstract: Continuity compositions are provided as are methods of their preparation. The compositions comprise metal carboxylate salts and fatty amines and find advantageous use in olefin polymerization processes.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: July 31, 2018
    Assignee: Univation Technologies, LLC
    Inventors: Richard B. Pannell, David M. Glowczwski, Chi-I Kuo, Timothy R. Lynn, Fathi David Hussein, Phuong A. Cao, Wesley R. Mariott, Michael D. Awe
  • Publication number: 20180134821
    Abstract: Supported catalyst compositions, useful in olefin polymerization, and having improved flow properties are disclosed. The catalyst compositions may be characterized by low macro pore volume and high bulk density. Methods for preparing the catalyst compositions are also disclosed.
    Type: Application
    Filed: April 25, 2016
    Publication date: May 17, 2018
    Applicant: Univation Technologies, LLC
    Inventors: Richard B. Pannell, Chi-I Kuo, Shamah Lloyd
  • Patent number: 9809656
    Abstract: Processes for making and using a viscosified liquid slurry polymerization additive are disclosed herein. The process for making a viscosified liquid slurry polymerization additive comprises contacting a polymerization additive with a liquid to form a liquid slurry polymerization additive, and shearing the liquid slurry polymerization additive to increase its viscosity and thus form the viscosified liquid slurry polymerization additive. The process for using a viscosified liquid slurry polymerization additive comprises contacting, under polymerization conditions, in a reactor system: a catalyst system, one or more monomers, and at least one viscosified liquid slurry polymerization additive.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: November 7, 2017
    Assignee: Univation Technologies, LLC
    Inventors: Richard B. Pannell, David M. Glowczwski, Chi-I Kuo
  • Publication number: 20170240674
    Abstract: Continuity compositions are provided as are methods of their preparation. The compositions comprise metal carboxylate salts and fatty amines and find advantageous use in olefin polymerization processes.
    Type: Application
    Filed: May 4, 2017
    Publication date: August 24, 2017
    Applicant: Univation Technologies, LLC
    Inventors: Richard B. Pannell, David M. Glowczwski, Chi-I Kuo, Timothy R. Lynn, Fathi David Hussein, Phuong A. Cao, Wesley R. Mariott, Michael D. Awe