Patents by Inventor Ayush A. Bafna

Ayush A. Bafna 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: 11767385
    Abstract: A bimodal ethylene-co-1-butene copolymer consisting essentially of a higher molecular weight component and a lower molecular weight component and, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by a combination of high-load melt index, melt flow ratio, and melt elasticity properties. A (blown) film consisting essentially of the bimodal ethylene-co-1-butene copolymer and having improved properties. Methods of synthesizing the bimodal ethylene-co-1-butene copolymer and making the blown film. A manufactured article comprising the bimodal ethylene-co-1-butene copolymer.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: September 26, 2023
    Assignee: UNIVATION TECHNOLOGIES LLC
    Inventors: Bo Liu, Chuan He, Daudi A. Abe, Roger L. Kuhlman, Ayush A. Bafna, Timothy R. Lynn
  • Patent number: 11649305
    Abstract: A unimodal ethylene-co-1-hexene copolymer that, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by combination of melt elasticity and complex viscosity ratio (shear thinning)properties. A blown film consisting essentially of the unimodal ethylene-co-1-hexene copolymer. A method of synthesizing the unimodal ethylene-co-1-hexene copolymer. A method of making the blown film. A manufactured article comprising the unimodal ethylene-co-1-hexene copolymer.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: May 16, 2023
    Assignee: Univation Technologies, LLC
    Inventors: Bo Liu, Yi Zhang, Ayush A. Bafna, François Alexandre, Robert N. Reib
  • Publication number: 20220325083
    Abstract: A nucleating agent-free and LLDPE-free polyolefin composition for making films with enhanced barrier properties against water vapor and oxygen gas. Related aspects include formulations, manufactured articles, films, and methods.
    Type: Application
    Filed: September 22, 2020
    Publication date: October 13, 2022
    Inventors: Nitin Borse, Swapnil B. Chandak, Ayush A. Bafna, Roger L. Kuhlman, Joel D. Wieliczko, John F. Szul, Chuan C. He, Charles D. Lester
  • Patent number: 11203653
    Abstract: A bimodal polyethylene composition made with a bimodal catalyst system, wherein the bimodal polyethylene composition has from greater than 0 to 14 weight percent of polyethylene polymers having a weight-average molecular weight of from greater than 0 to 10,000 grams per mol, products made therefrom, methods of making and using same, and articles containing same.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: December 21, 2021
    Assignee: Univation Technologies, LLC
    Inventors: Nitin Borse, Ayush A. Bafna, Cliff R. Mure, Chuan C. He, Timothy R. Lynn, Roger L. Kuhlman, John F. Szul
  • Patent number: 11161924
    Abstract: An ethylene/alpha-olefin copolymer that can be synthesized in a fluidized-bed, gas phase polymerization reactor and made into a blown film. The ethylene/alpha-olefin copolymer is characterized by a bubble stability-effective combination of properties comprising density, melt flow ratio (“I21/I5”), and melt storage modulus G? (G?=3,000 Pa). The synthesis in the FB-GPP reactor is characterized by a property-imparting-effective combination of operating conditions comprising reactor bed temperature and H2/C2 gas molar ratio. An embodiment of the blown film consisting of the ethylene/alpha-olefin copolymer is characterized by enhanced bubble stability. A method of making the ethylene/alpha-olefin copolymer. A film comprising the ethylene/alpha-olefin copolymer. A method of making the film. A manufactured article comprising the film.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: November 2, 2021
    Assignee: Univation Technologies, LLC
    Inventors: Bo Liu, Mark G. Goode, Ayush A. Bafna, Daniel C. Garska, François Alexandre, Timothy R. Lynn
  • Patent number: 11149136
    Abstract: Provided are various bimodal polyethylene, including but not limited to a bimodal polyethylene for a pipe having a density of from 0.9340 to 0.9470 gram/cubic centimeters (g/ccm), a melt index (12) of from 0.1 to 0.7 gram/10 minute, a melt flow ratio (121/12) of from 20 to 90. The bimodal polyethylene includes a high molecular weight polyethylene component and a low molecular weight polyethylene component which are a reaction product of a polymerization process performed in a single reactor and that employs a bimodal polymerization catalyst system. The bimodal polymerization catalyst system includes a bimodal catalyst system of bis(2-pentamethylphenylamido)ethyl)amine Zirconium dibenzyl and either (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)Zirconium dichloride or (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)zirconium dimethyl in a 3.0:1 molar ratio; and a trim catalyst of (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)Zirconium dichloridedimethyl in heptane added to adjust melt.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: October 19, 2021
    Assignee: Univation Technologies, LLC
    Inventors: Nitin Borse, Swapnil Chandak, Ayush A. Bafna, Cliff R. Mure, Yi Zhang, Timothy R. Lynn, Roger L. Kuhlman, John F. Szul
  • Patent number: 11142597
    Abstract: A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: October 12, 2021
    Assignee: Univation Technologies, LLC
    Inventors: Swapnil B. Chandak, Nitin Borse, Ayush A. Bafna, Yi Zhang, Timothy R. Lynn, Roger L. Kuhlman, John F. Szul
  • Publication number: 20210261703
    Abstract: A unimodal ethylene-co-1-hexene copolymer that, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by combination of melt elasticity and complex viscosity ratio (shear thinning) properties. A blown film consisting essentially of the unimodal ethylene-co-1-hexene copolymer. A method of synthesizing the unimodal ethylene-co-1-hexene copolymer. A method of making the blown film. A manufactured article comprising the unimodal ethylene-co-1-hexene copolymer.
    Type: Application
    Filed: July 29, 2019
    Publication date: August 26, 2021
    Inventors: Bo Liu, Yi Zhang, Ayush A. Bafna, François Alexandre, Robert N. Reib
  • Publication number: 20210238323
    Abstract: A bimodal ethylene-co-1-hexene copolymer consisting essentially of a higher molecular weight component and a lower molecular weight component and, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by a combination of high-load melt index, melt flow ratio, and melt elasticity properties. A blown film consisting essentially of the bimodal ethylene-co-1-hexene copolymer. A method of synthesizing the bimodal ethylene-co-1-hexene copolymer. A method of making the blown film. A manufactured article comprising the bimodal ethylene-co-1-hexene copolymer.
    Type: Application
    Filed: June 7, 2019
    Publication date: August 5, 2021
    Inventors: Bo Liu, Joel D. Wieliczko, John F. Szul, Daudi A. Abe, Roger L. Kuhlman, Ayush A. Bafna, Timothy R. Lynn
  • Publication number: 20210179753
    Abstract: A unimodal ethylene-co-1-hexene copolymer that, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by combination of melt elasticity and complex viscosity ratio (shear thinning) properties. A blown film consisting essentially of the unimodal ethylene-co-1-hexene copolymer. A method of synthesizing the unimodal ethylene-co-hexene copolymer. A method of making the blown film. A manufactured article comprising the unimodal ethylene-co-1-hexene copolymer.
    Type: Application
    Filed: July 29, 2019
    Publication date: June 17, 2021
    Inventors: Bo Liu, Yi Zhang, Ayush A. Bafna, François Alexandre, Robert N. Reib
  • Publication number: 20210179754
    Abstract: A bimodal ethylene-co-1-butene copolymer consisting essentially of a higher molecular weight component and a lower molecular weight component and, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by a combination of high-load melt index, melt flow ratio, and melt elasticity properties. A (blown) film consisting essentially of the bimodal ethylene-co-1-butene copolymer and having improved properties. Methods of synthesizing the bimodal ethylene-co-1-butene copolymer and making the blown film. A manufactured article comprising the bimodal ethylene-co-1-butene copolymer.
    Type: Application
    Filed: August 21, 2019
    Publication date: June 17, 2021
    Inventors: Bo Liu, Chuan He, Daudi A. Abe, Roger L. Kuhlman, Ayush A. Bafna, Timothy R. Lynn
  • Publication number: 20210147591
    Abstract: A bimodal polyethylene composition made with a bimodal catalyst system, wherein the bimodal polyethylene composition has from greater than 0 to 14 weight percent of polyethylene polymers having a weight-average molecular weight of from greater than 0 to 10,000 grams per mol, products made therefrom, methods of making and using same, and articles containing same.
    Type: Application
    Filed: August 23, 2018
    Publication date: May 20, 2021
    Applicant: Dow Global Technologies LLC
    Inventors: Nitin Borse, Ayush A. Bafna, Cliff R. Mure, Chuan C. He, Timothy R. Lynn, Roger L. Kuhlman, John F. Szul
  • Publication number: 20210095109
    Abstract: A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same.
    Type: Application
    Filed: December 10, 2020
    Publication date: April 1, 2021
    Inventors: Swapnil Chandak, Nitin Borse, Ayush A. Bafna, Yi Zhang, Timothy R. Lynn, Roger L. Kuhlman, John F. Szul
  • Publication number: 20210070902
    Abstract: A unimodal ethylene-co-1-butene copolymer that, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by combination of shear thinning and melt elasticity properties. A blown film consisting essentially of the unimodal ethylene-co-1-butene copolymer. A method of synthesizing the unimodal ethylene-co-1-butene copolymer. A method of making the blown film. A manufactured article comprising the unimodal ethylene-co-1-butene copolymer.
    Type: Application
    Filed: May 8, 2019
    Publication date: March 11, 2021
    Inventors: Bo Liu, Yi Zhang, Ayush A. Bafna, François Alexandre, Kevin R. Gross
  • Patent number: 10941284
    Abstract: A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: March 9, 2021
    Assignee: Univation Technologies, LLC
    Inventors: Swapnil Chandak, Nitin Borse, Ayush A. Bafna, Yi Zhang, Timothy R. Lynn, Roger L. Kuhlman, John F. Szul
  • Publication number: 20200262951
    Abstract: An ethylene/alpha-olefin copolymer that can be synthesized in a fluidized-bed, gas phase polymerization reactor and made into a blown film. The ethylene/alpha-olefin copolymer is characterized by a bubble stability-effective combination of properties comprising density, melt flow ratio (I21/I5), and melt storage modulus G? (G?=3,000 Pa). The synthesis in the FB-GPP reactor is characterized by a property-imparting-effective combination of operating conditions comprising reactor bed temperature and H2/C2 gas molar ratio. An embodiment of the blown film consisting of the ethylene/alpha-olefin copolymer is characterized by enhanced bubble stability. A method of making the ethylene/alpha-olefin copolymer. A film comprising the ethylene/alpha-olefin copolymer. A method of making the film. A manufactured article comprising the film.
    Type: Application
    Filed: October 9, 2018
    Publication date: August 20, 2020
    Inventors: Bo Liu, Mark G. Goode, Ayush A. Bafna, Daniel C. Garska, François Alexandre, Timothy R. Lynn
  • Publication number: 20200071509
    Abstract: Provided are various bimodal polyethylene, including but not limited to a bimodal polyethylene for a pipe having a density of from 0.9340 to 0.9470 gram/cubic centimeters (g/ccm), a melt index (12) of from 0.1 to 0.7 gram/10 minute, a melt flow ratio (121/12) of from 20 to 90. The bimodal polyethylene includes a high molecular weight polyethylene component and a low molecular weight polyethylene component which are a reaction product of a polymerization process performed in a single reactor and that employs a bimodal polymerization catalyst system. The bimodal polymerization catalyst system includes a bimodal catalyst system of bis(2-pentamethylphenylamido)ethyl)amine Zirconium dibenzyl and either (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)Zirconium dichloride or (tetramethylcyclopentadienyl)(n-propylcyclopentadienyl)zirconium dimethyl in a 3.
    Type: Application
    Filed: October 25, 2017
    Publication date: March 5, 2020
    Applicant: Univation Technologies, LLC
    Inventors: Nitin BORSE, Swapnil CHANDAK, Ayush A. BAFNA, Cliff R. MURE, Yi ZHANG, Timothy R. LYNN, Roger L. KUHLMAN, John F. SZUL
  • Publication number: 20190256629
    Abstract: A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same.
    Type: Application
    Filed: October 25, 2017
    Publication date: August 22, 2019
    Inventors: Swapnil B. Chandak, Nitin Borse, Ayush A. Bafna, Yi Zhang, Timothy R. Lynn, Roger L. Kuhlman, John F. Szul
  • Publication number: 20190256696
    Abstract: A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same.
    Type: Application
    Filed: October 25, 2017
    Publication date: August 22, 2019
    Inventors: Swapnil B. Chandak, Nitin Borse, Ayush A. Bafna, Yi Zhang, Timothy R. Lynn, Roger L. Kuhlman, John F. Szul
  • Patent number: 9896574
    Abstract: The present disclosure relates to multilayer thermoplastic films particularly suited for use in liners. The films contain organic fillers to produce opacity when stretched while maintaining an MD Tear Strength of at least 200 gm and a Dart Impact of at least 200 gm. Such performance can be maintained by selection and amounts of resins, organic fillers and processing conditions of the films.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: February 20, 2018
    Assignee: Dow Global Technologies LLC
    Inventor: Ayush A. Bafna