Patents by Inventor Kefu Sun

Kefu Sun 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).

  • Publication number: 20240270931
    Abstract: The present disclosure provides embodiments of a composition comprising post-consumer recycled resin comprising: at least 50 weight percent polyolefin, having an initial limonene level of at least 5 ppm; virgin ethylene-based polymer; and at least one odor-active zeolite, wherein the odor-active zeolite has an FAU crystal structure, an MFI crystal structure, and/or a beta crystal structure and a Si/Al molar ratio from 1 to 100, wherein the composition has a reduced limonene level of less than 3 ppm. The present disclosure also provides embodiments of a method of reducing taste and/or odor in a post-consumer recycled (PCR) resin-containing composition.
    Type: Application
    Filed: June 6, 2022
    Publication date: August 15, 2024
    Applicant: Dow Global Technologies LLC
    Inventors: Karlheinz Hausmann, Daniel G. Abebe, Craig F. Gorin, Carol Tsai, Jin Wang, Scott T. Matteucci, Kefu Sun, Beata A. Kilos
  • Publication number: 20240262993
    Abstract: The present disclosure provides embodiments of a composition comprising post-consumer recycled resin comprising: at least 50 weight percent polyolefin, having an initial limonene level of at least 5 ppm; virgin ethylene-based polymer; and at least one odor-active zeolite, wherein the odor-active zeolite has an FAU crystal structure, an MFI crystal structure, and/or beta crystal structure and a Si/Al molar ratio from 1 to 1000, wherein the composition has a reduced limonene level of less than 3 ppm.
    Type: Application
    Filed: June 6, 2022
    Publication date: August 8, 2024
    Applicant: Dow Global Technologies LLC
    Inventors: Daniel G. Abebe, Karlheinz Hausmann, Alexander Williamson, Scott T. Matteucci, Kefu Sun, Beata A. Kilos, Carol Tsai, Craig F. Gorin, Jin Wang
  • Publication number: 20240262597
    Abstract: A method for producing zeolite embedded polyolefin films for packaging polyurethane foams also embedded with zeolite.
    Type: Application
    Filed: September 19, 2021
    Publication date: August 8, 2024
    Inventors: Praveenkumar Boopalachandran, Daniel G. Abebe, Kefu Sun, Scott T. Matteucci, Paul Cookson, Beata A. Kilos
  • Patent number: 11965081
    Abstract: The present disclosure provides a composition. In an embodiment, the composition includes an olefin-based polymer and from 0.15 wt % to 15 wt % of an odor suppressant. The odor suppressant includes (i) from 0.05 wt % to 2 wt % of a metal oxide having a band gap greater than 5.0 electron volts (eV), and (ii) from 0.1 wt % to 13 wt % of an acid copolymer. The ratio of metal oxide to acid copolymer is from 1:20 to 1:1. Weight percents are based on the total weight of the composition.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: April 23, 2024
    Assignee: Dow Global Technologies LLC
    Inventors: Casey R. McAlpin, Arkady L. Krasovskiy, Kefu Sun, Scott T. Matteucci
  • Publication number: 20230272150
    Abstract: A method for preparing low odor polyurethane foams by the use of a high silica zeolite and a foam-forming composition.
    Type: Application
    Filed: September 14, 2021
    Publication date: August 31, 2023
    Inventors: Praveenkumar Boopalachandran, Daniel G. Abebe, Kefu Sun, Scott T. Matteucci, Luis Garcia, Beata A. Kilos
  • Patent number: 11667776
    Abstract: The present disclosure provides a fiber and fabrics made therefrom. In an embodiment, a fiber is provided and includes an odor control composition. The odor control composition includes (A) from 85 wt % to 99.5 wt % of an olefin-based polymer and (B) from 15 wt % to 0.5 wt % of an odor suppressant. The odor suppressant includes: (i) an ionomer, (ii) particles of zinc oxide, and (iii) particles of copper oxide.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: June 6, 2023
    Assignee: Dow Global Technologies LLC
    Inventors: Scott T. Matteucci, Jeffrey E. Bonekamp, Arkady L. Krasovskiy, Kefu Sun, Keran Lu, Ronald Wevers
  • Patent number: 11655316
    Abstract: Embodiments of the present disclosure are directed towards method for modifying a polymer flow index. As an example, a method for modifying a polymer flow index can include providing monomers to a polymerization reactor, providing a chromium catalyst to the polymerization reactor, and providing an active amount of a flow index modifier to the polymerization reactor, wherein the flow index modifier is selected from carbon dioxide, carbon monoxide, 2,4-hexadiene, and combinations thereof.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: May 23, 2023
    Assignee: Univation Technologies, LLC
    Inventors: Charles D. Lester, Mark G. Goode, Timothy R. Lynn, Kevin J. Cann, John H. Moorhouse, William Albert Matthews, Kefu Sun, Francois Alexandre
  • Patent number: 11634569
    Abstract: A composition for odor control includes (A) from 85 wt % to 99.5 wt % of an olefin-based compound and (B) from 15 wt % to 0.5 wt % of an odor suppressant. The odor suppressant includes a blend of (i) an ionomer, (ii) particles of zinc oxide, and (iii) particles of copper oxide. The composition has a methyl mercaptan odor suppression value of greater than 45% as measured in accordance with ASTM D5504-12.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: April 25, 2023
    Assignee: Dow Global Technologies LLC
    Inventors: Arkady L. Krasovskiy, Kefu Sun, Keran Lu, Scott T. Matteucci, Alexander Williamson, Jose Eduardo Ruiz, Jeffrey E. Bonekamp
  • Patent number: 11400692
    Abstract: The present disclosure provides a film. In an embodiment, a multilayer film is provided and includes (A) a seal layer, (B) a barrier layer, and (C) an odor control layer. The odor control layer includes an odor control composition containing (A) from 85 wt % to 99.5 wt % of an olefin-based polymer and (B) from 15 wt % to 0.5 wt % of an odor suppressant. The odor suppressant includes a blend of: (i) an ionomer, (ii) particles of zinc oxide, and (iii) particles of copper oxide. The composition has a methyl mercaptan odor suppression value of greater than 45% as measured in accordance with ASTM D5504-12.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: August 2, 2022
    Assignee: Dow Global Technologies LLC
    Inventors: Jeffrey E. Bonekamp, Ronald Wevers, Scott T. Matteucci, Arkady L. Krasovskiy, Kefu Sun, Keran Lu
  • Publication number: 20220169839
    Abstract: The present disclosure provides a composition. In an embodiment, the composition includes an olefin-based polymer and from 0.15 wt % to 15 wt % of an odor suppressant. The odor suppressant includes (i) from 0.05 wt % to 2 wt % of a metal oxide having a band gap greater than 5.0 electron volts (eV), and (ii) from 0.1 wt % to 13 wt % of an acid copolymer. The ratio of metal oxide to acid copolymer is from 1:20 to 1:1. Weight percents are based on the total weight of the composition.
    Type: Application
    Filed: February 18, 2020
    Publication date: June 2, 2022
    Inventors: Casey R. McAlpin, Arkady L. Krasovskiy, Kefu Sun, Scott T. Matteucci
  • Publication number: 20220145050
    Abstract: The present disclosure provides a composition. In an embodiment, the composition includes a polymer component and an odor suppressant. The polymer component includes (i) a post-consumer resin and (ii) optionally an olefin-based polymer. The composition further includes from 0.15 wt % to 15 wt % of the odor suppressant. The odor suppressant includes (i) from 0.05 wt % to 2 wt % of a metal oxide having a band gap greater than 5.0 electron volts (eV); and (ii) from 0.1 wt % to 13 wt % an acid copolymer. The ratio of metal oxide to acid copolymer is from 1:20 to 1:1. Weight percent is based on total weight of the composition.
    Type: Application
    Filed: February 18, 2020
    Publication date: May 12, 2022
    Inventors: Casey R. McAlpin, Arkady L. Krasovskiy, Kefu Sun, Scott T. Matteucci, Jill M. Martin, Siddharth Ram Athreya, Larry Shayne Green
  • Publication number: 20210363334
    Abstract: The present disclosure provides a fiber and fabrics made therefrom. In an embodiment, a fiber is provided and includes an odor control composition. The odor control composition includes (A) from 85 wt % to 99.5 wt % of an olefin-based polymer and (B) from 15 wt % to 0.5 wt % of an odor suppressant. The odor suppressant includes: (i) an ionomer, (ii) particles of zinc oxide, and (iii) particles of copper oxide.
    Type: Application
    Filed: August 26, 2019
    Publication date: November 25, 2021
    Inventors: Scott T. Matteucci, Jeffrey E. Bonekamp, Arkady L. Krasovskiy, Kefu Sun, Keran Lu, Ronald Wevers
  • Publication number: 20210363337
    Abstract: A composition for odor control includes (A) from 85 wt % to 99.5 wt % of an olefin-based compound and (B) from 15 wt % to 0.5 wt % of an odor suppressant. The odor suppressant includes a blend of (i) an ionomer, (ii) particles of zinc oxide, and (iii) particles of copper oxide. The composition has a methyl mercaptan odor suppression value of greater than 45% as measured in accordance with ASTM D5504-12.
    Type: Application
    Filed: August 26, 2019
    Publication date: November 25, 2021
    Inventors: Arkady L. Krasovskiy, Kefu Sun, Keran Lu, Scott T. Matteucci, Alexander Williamson, Jose Eduardo Ruiz, Jeffrey E. Bonekamp
  • Patent number: 11161091
    Abstract: The present disclosure provides a composition. In an embodiment, the composition includes (A) from 85 wt % to 99 wt % of an olefin-based polymer and (B) from 15 wt % to 1 wt % of an odor suppressant. The odor suppressant is a blend of (i) particles of zinc oxide, and (ii) zinc ionomer. The zinc oxide particles have a D50 particle size from 100 nm to 3000 nm, a surface area from 1 m2/g to 9 m2/g, and a porosity less than 0.020 m3/g. The composition has a methyl mercaptan odor suppression value of less than 70 at 3 days as measured in accordance with ASTM D5504-12.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: November 2, 2021
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Arkady L. Krasovskiy, Kefu Sun, Keran Lu, Scott T. Matteucci, Alexander Williamson, Jose Eduardo Ruiz, Harpreet Singh, Michelle Gallagher, Jeffrey E. Bonekamp
  • Patent number: 11161949
    Abstract: The present disclosure provides a film. In an embodiment, a film for suppressing odors is provided and includes a composition of (A) from 85 wt % to 99 wt % of a thermoplastic polymer and (B) from 15 wt % to 1 wt % of an odor suppressant. The odor suppressant is a blend composed of (Bi) particles of zinc oxide and (Bii) zinc ionomer. The zinc oxide particles (Bi) have a D50 particle size from 100 nm to 3000 nm, a surface area from 1 m2/g to 9 m2/g, and a porosity less than 0.020 m3/g. The composition has a methyl mercaptan odor suppression value less than 70 at 3 days exposure to methyl mercaptan as measured in accordance with ASTM D5504-12.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: November 2, 2021
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Arkady L. Krasovskiy, Kefu Sun, Keran Lu, Scott T. Matteucci, Alexander Williamson, Jose Eduardo Ruiz, Michelle Gallagher, Harpreet Singh
  • Patent number: 11078441
    Abstract: A process to prepare an ethylene-based polymer, said process comprising polymerizing a mixture comprising ethylene, at a pressure greater than, or equal to, 100 MPa, in the presence of at least one free-radical initiator; and in a reactor system comprising at least one reactor and at least one Hyper-compressor, and wherein at least one oil formulation, optionally comprising one or more lubrication agents, is added to the Hyper-compressor; and wherein at least one of the following steps takes place: A) thermally treating the one or more lubrication agents, in an oxygen-free atmosphere, to achieve a peroxide level ?10 ppm, based on the weight of the lubrication agent(s), and then adding said agent(s) to the oil formulation, prior to adding the oil formulation to the Hyper-compressor; or B) thermally treating the oil formulation, in an oxygen-free atmosphere, to achieve a peroxide level ?10 ppm, based on the weight of the oil formulation, prior to adding the oil formulation to the Hyper-compressor; C) a combinat
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: August 3, 2021
    Assignee: Dow Global Technologies LLC
    Inventors: Sean W. Ewart, Sarat Munjal, Kefu Sun
  • Publication number: 20210187920
    Abstract: The present disclosure provides a film. In an embodiment, a multilayer film is provided and includes (A) a seal layer, (B) a barrier layer, and (C) an odor control layer. The odor control layer includes an odor control composition containing (A) from 85 wt % to 99.5 wt % of an olefin-based polymer and (B) from 15 wt % to 0.5 wt % of an odor suppressant. The odor suppressant includes a blend of: (i) an ionomer, (ii) particles of zinc oxide, and (iii) particles of copper oxide. The composition has a methyl mercaptan odor suppression value of greater than 45% as measured in accordance with ASTM D5504-12.
    Type: Application
    Filed: August 23, 2019
    Publication date: June 24, 2021
    Inventors: Jeffrey E. Bonekamp, Ronald Wevers, Scott T. Matteucci, Arkady L. Krasovskiy, Kefu Sun, Keran Lu
  • Publication number: 20210102016
    Abstract: Embodiments of the present disclosure are directed towards method for modifying a polymer flow index.
    Type: Application
    Filed: December 16, 2020
    Publication date: April 8, 2021
    Applicant: Univation Technologies, LLC
    Inventors: Charles D. Lester, Mark G. Goode, Timothy R. Lynn, Kevin J. Cann, John H. Moorhouse, William Albert Matthews, Kefu Sun, Francois Alexandre
  • Patent number: 10870719
    Abstract: Embodiments of the present disclosure are directed towards method for modifying a polymer flow index. As an example, a method for modifying a polymer flow index can include providing monomers to a polymerization reactor, providing a chromium catalyst to the polymerization reactor, and providing an active amount of a flow index modifier to the polymerization reactor, wherein the flow index modifier is selected from carbon dioxide, carbon monoxide, 2,4-hexadiene, and combinations thereof.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: December 22, 2020
    Assignee: Univation Technologies, LLC
    Inventors: Charles D. Lester, Mark G. Goode, Timothy R. Lynn, Kevin J. Cann, John H. Moorhouse, William Albert Matthews, Kefu Sun, Francois Alexandre
  • Publication number: 20200277544
    Abstract: A process to prepare an ethylene-based polymer, said process comprising polymerizing a mixture comprising ethylene, at a pressure greater than, or equal to, 100 MPa, in the presence of at least one free-radical initiator; and in a reactor system comprising at least one reactor and at least one Hyper-compressor, and wherein at least one oil formulation, optionally comprising one or more lubrication agents, is added to the Hyper-compressor; and wherein at least one of the following steps takes place: A) thermally treating the one or more lubrication agents, in an oxygen-free atmosphere, to achieve a peroxide level?10 ppm, based on the weight of the lubrication agent(s), and then adding said agent(s) to the oil formulation, prior to adding the oil formulation to the Hyper-compressor; or B) thermally treating the oil formulation, in an oxygen-free atmosphere, to achieve a peroxide level?10 ppm, based on the weight of the oil formulation, prior to adding the oil formulation to the Hyper-compressor; C) a combinatio
    Type: Application
    Filed: September 19, 2017
    Publication date: September 3, 2020
    Applicant: Dow Global Technologies LLC
    Inventors: Sean W. Ewart, Sarat Munjal, Kefu Sun