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).
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Publication number: 20240270931Abstract: 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: ApplicationFiled: June 6, 2022Publication date: August 15, 2024Applicant: Dow Global Technologies LLCInventors: Karlheinz Hausmann, Daniel G. Abebe, Craig F. Gorin, Carol Tsai, Jin Wang, Scott T. Matteucci, Kefu Sun, Beata A. Kilos
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Publication number: 20240262993Abstract: 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: ApplicationFiled: June 6, 2022Publication date: August 8, 2024Applicant: Dow Global Technologies LLCInventors: Daniel G. Abebe, Karlheinz Hausmann, Alexander Williamson, Scott T. Matteucci, Kefu Sun, Beata A. Kilos, Carol Tsai, Craig F. Gorin, Jin Wang
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Publication number: 20240262597Abstract: A method for producing zeolite embedded polyolefin films for packaging polyurethane foams also embedded with zeolite.Type: ApplicationFiled: September 19, 2021Publication date: August 8, 2024Inventors: Praveenkumar Boopalachandran, Daniel G. Abebe, Kefu Sun, Scott T. Matteucci, Paul Cookson, Beata A. Kilos
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Patent number: 11965081Abstract: 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: GrantFiled: February 18, 2020Date of Patent: April 23, 2024Assignee: Dow Global Technologies LLCInventors: Casey R. McAlpin, Arkady L. Krasovskiy, Kefu Sun, Scott T. Matteucci
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Publication number: 20230272150Abstract: A method for preparing low odor polyurethane foams by the use of a high silica zeolite and a foam-forming composition.Type: ApplicationFiled: September 14, 2021Publication date: August 31, 2023Inventors: Praveenkumar Boopalachandran, Daniel G. Abebe, Kefu Sun, Scott T. Matteucci, Luis Garcia, Beata A. Kilos
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Patent number: 11667776Abstract: 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: GrantFiled: August 26, 2019Date of Patent: June 6, 2023Assignee: Dow Global Technologies LLCInventors: Scott T. Matteucci, Jeffrey E. Bonekamp, Arkady L. Krasovskiy, Kefu Sun, Keran Lu, Ronald Wevers
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Patent number: 11655316Abstract: 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: GrantFiled: December 16, 2020Date of Patent: May 23, 2023Assignee: Univation Technologies, LLCInventors: Charles D. Lester, Mark G. Goode, Timothy R. Lynn, Kevin J. Cann, John H. Moorhouse, William Albert Matthews, Kefu Sun, Francois Alexandre
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Patent number: 11634569Abstract: 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: GrantFiled: August 26, 2019Date of Patent: April 25, 2023Assignee: Dow Global Technologies LLCInventors: Arkady L. Krasovskiy, Kefu Sun, Keran Lu, Scott T. Matteucci, Alexander Williamson, Jose Eduardo Ruiz, Jeffrey E. Bonekamp
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Patent number: 11400692Abstract: 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: GrantFiled: August 23, 2019Date of Patent: August 2, 2022Assignee: Dow Global Technologies LLCInventors: Jeffrey E. Bonekamp, Ronald Wevers, Scott T. Matteucci, Arkady L. Krasovskiy, Kefu Sun, Keran Lu
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Publication number: 20220169839Abstract: 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: ApplicationFiled: February 18, 2020Publication date: June 2, 2022Inventors: Casey R. McAlpin, Arkady L. Krasovskiy, Kefu Sun, Scott T. Matteucci
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Publication number: 20220145050Abstract: 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: ApplicationFiled: February 18, 2020Publication date: May 12, 2022Inventors: Casey R. McAlpin, Arkady L. Krasovskiy, Kefu Sun, Scott T. Matteucci, Jill M. Martin, Siddharth Ram Athreya, Larry Shayne Green
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Publication number: 20210363334Abstract: 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: ApplicationFiled: August 26, 2019Publication date: November 25, 2021Inventors: Scott T. Matteucci, Jeffrey E. Bonekamp, Arkady L. Krasovskiy, Kefu Sun, Keran Lu, Ronald Wevers
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Publication number: 20210363337Abstract: 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: ApplicationFiled: August 26, 2019Publication date: November 25, 2021Inventors: Arkady L. Krasovskiy, Kefu Sun, Keran Lu, Scott T. Matteucci, Alexander Williamson, Jose Eduardo Ruiz, Jeffrey E. Bonekamp
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Patent number: 11161091Abstract: 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: GrantFiled: February 22, 2019Date of Patent: November 2, 2021Assignees: Dow Global Technologies LLC, Rohm and Haas CompanyInventors: Arkady L. Krasovskiy, Kefu Sun, Keran Lu, Scott T. Matteucci, Alexander Williamson, Jose Eduardo Ruiz, Harpreet Singh, Michelle Gallagher, Jeffrey E. Bonekamp
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Patent number: 11161949Abstract: 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: GrantFiled: February 22, 2019Date of Patent: November 2, 2021Assignees: Dow Global Technologies LLC, Rohm and Haas CompanyInventors: Arkady L. Krasovskiy, Kefu Sun, Keran Lu, Scott T. Matteucci, Alexander Williamson, Jose Eduardo Ruiz, Michelle Gallagher, Harpreet Singh
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Patent number: 11078441Abstract: 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 combinatType: GrantFiled: September 19, 2017Date of Patent: August 3, 2021Assignee: Dow Global Technologies LLCInventors: Sean W. Ewart, Sarat Munjal, Kefu Sun
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Publication number: 20210187920Abstract: 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: ApplicationFiled: August 23, 2019Publication date: June 24, 2021Inventors: Jeffrey E. Bonekamp, Ronald Wevers, Scott T. Matteucci, Arkady L. Krasovskiy, Kefu Sun, Keran Lu
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Publication number: 20210102016Abstract: Embodiments of the present disclosure are directed towards method for modifying a polymer flow index.Type: ApplicationFiled: December 16, 2020Publication date: April 8, 2021Applicant: Univation Technologies, LLCInventors: Charles D. Lester, Mark G. Goode, Timothy R. Lynn, Kevin J. Cann, John H. Moorhouse, William Albert Matthews, Kefu Sun, Francois Alexandre
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Patent number: 10870719Abstract: 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: GrantFiled: April 17, 2017Date of Patent: December 22, 2020Assignee: Univation Technologies, LLCInventors: Charles D. Lester, Mark G. Goode, Timothy R. Lynn, Kevin J. Cann, John H. Moorhouse, William Albert Matthews, Kefu Sun, Francois Alexandre
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Publication number: 20200277544Abstract: 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 combinatioType: ApplicationFiled: September 19, 2017Publication date: September 3, 2020Applicant: Dow Global Technologies LLCInventors: Sean W. Ewart, Sarat Munjal, Kefu Sun