Patents by Inventor David Nalewajek

David Nalewajek 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: 20220177759
    Abstract: The present invention provides a composition comprising 2,3,3,3-tetrafluoropropene and ?-terpinene particularly useful in automotive air conditioning systems and devices, commercial refrigeration systems and devices, chillers, residential refrigerator and freezers, general air conditioning systems, heat pumps, and the like.
    Type: Application
    Filed: December 14, 2021
    Publication date: June 9, 2022
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: David Nalewajek, Rajiv Ratna Singh, Rajiv Banavali, Gregory Laurence Smith
  • Publication number: 20220106430
    Abstract: The invention provides polyurethane and polyisocyanurate foams and methods for the preparation thereof. More particularly, the invention relates to open-celled, polyurethane and polyisocyanurate foams and methods for their preparation. The foams are characterized by a fine uniform cell structure and little or no foam collapse. The foams are produced with a polyol premix composition which comprises a combination of a hydrohaloolefin blowing agent, a polyol, a silicone surfactant, and a sterically hindered amine catalyst.
    Type: Application
    Filed: October 14, 2021
    Publication date: April 7, 2022
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Michael Van Der Puy, David J. Williams, Haridasan K. Nair, David Nalewajek
  • Patent number: 11230655
    Abstract: The present invention provides a composition comprising 2,3,3,3-tetrafluoropropene and ?-terpinene particularly useful in automotive air conditioning systems and devices, commercial refrigeration systems and devices, chillers, residential refrigerator and freezers, general air conditioning systems, heat pumps, and the like.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: January 25, 2022
    Assignee: HONEYWELL INTERNATIONAL INC
    Inventors: David Nalewajek, Rajiv Ratna Singh, Rajiv Banavali, Gregory Laurence Smith
  • Patent number: 11149105
    Abstract: The invention provides polyurethane and polyisocyanurate foams and methods for the preparation thereof. More particularly, the invention relates to open-celled, polyurethane and polyisocyanurate foams and methods for their preparation. The foams are characterized by a fine uniform cell structure and little or no foam collapse. The foams are produced with a polyol premix composition which comprises a combination of a hydrohaloolefin blowing agent, a polyol, a silicone surfactant, and a sterically hindered amine catalyst.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: October 19, 2021
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Michael Van Der Puy, David J. Williams, Haridasan K. Nair, David Nalewajek
  • Patent number: 11033027
    Abstract: A copolymer comprising trans-1,3,3,3-tetrafluoropropene units and vinylidene fluoride units, and methods of making the same. A method of preventing biofouling on an article of manufacture, comprising applying such copolymer to the article of manufacture. A process of preparing a surface having a surface energy of between about 20 and about 30 mJ/m2, comprising applying such a copolymer to a support. A method of preventing accumulation of ice on an article of manufacture, comprising applying such a copolymer to an article of manufacture. A method of preparing a polymer, comprising a step of adding trans-1,3,3,3-tetrafluoropropene/vinylidene fluoride copolymer as a polymer processing additive/aid to said polymer.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: June 15, 2021
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Changqing Lu, Andrew J. Poss, Rajiv R. Singh, David Nalewajek, Cheryl Cantion
  • Patent number: 11021639
    Abstract: The present invention provides a composition comprising 2,3,3,3-tetrafluoropropene and ?-terpinene useful in automotive air conditioning systems and devices, commercial refrigeration systems and devices, chillers, residential refrigerator and freezers, general air conditioning systems, heat pumps, and the like.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: June 1, 2021
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: David Nalewajek, Rajiv Ratna Singh, Rajiv Banavali, Gregory Laurence Smith
  • Patent number: 10968298
    Abstract: Disclosed are aqueous emulsion copolymerization processes for synthesizing 2,3,3,3-tetrafluoropropene/vinylidene fluoride copolymers having 2,3,3,3-tetrafluoropropene as the major monomer unit. The copolymerization process is performed at temperatures of from about 55° C. to about 70° C. with at least one water soluble radical initiator, with preferred initiators including Na2S2O8, K2S2O8, (NH4)2S2O8, Fe2(S2O8)3, K2S2O8/FeSO4, (NH4)2S2O8/Fe2O4, and the like, as well as combinations thereof.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: April 6, 2021
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Changqing Lu, Andrew J. Poss, Rajiv R. Singh, David Nalewajek, Cheryl Cantlon
  • Publication number: 20200190380
    Abstract: The present invention provides a composition comprising 2,3,3,3-tetrafluoropropene and ?-terpinene particularly useful in automotive air conditioning systems and devices, commercial refrigeration systems and devices, chillers, residential refrigerator and freezers, general air conditioning systems, heat pumps, and the like.
    Type: Application
    Filed: December 13, 2019
    Publication date: June 18, 2020
    Inventors: David Nalewajek, Rajiv Ratna Singh, Rajiv Banavali, Gregory Laurence Smith
  • Publication number: 20200190381
    Abstract: The present invention provides a composition comprising 2,3,3,3-tetrafluoropropene and ?-terpinene useful in automotive air conditioning systems and devices, commercial refrigeration systems and devices, chillers, residential refrigerator and freezers, general air conditioning systems, heat pumps, and the like.
    Type: Application
    Filed: December 13, 2019
    Publication date: June 18, 2020
    Inventors: David Nalewajek, Rajiv Ratna Singh, Rajiv Banavali, Gregory Laurence Smith
  • Publication number: 20200157262
    Abstract: The invention relates fluorocopolymer compositions for use in coating wires and cables, the use of the coating compositions, and to a substrate coated with the composition. The invention provides a fluorocopolymer that comprises hydrofluoroolefin monomers, vinyl ester monomers and/or halogen-containing monomers.
    Type: Application
    Filed: November 15, 2019
    Publication date: May 21, 2020
    Inventors: ANDREW J. POSS, DAVID NALEWAJEK, RAJIV R. SINGH, Veronika Viner, Christophe Roger
  • Publication number: 20190315905
    Abstract: The invention provides polyurethane and polyisocyanurate foams and methods for the preparation thereof. More particularly, the invention relates to open-celled, polyurethane and polyisocyanurate foams and methods for their preparation. The foams are characterized by a fine uniform cell structure and little or no foam collapse. The foams are produced with a polyol premix composition which comprises a combination of a hydrohaloolefin blowing agent, a polyol, a silicone surfactant, and a sterically hindered amine catalyst.
    Type: Application
    Filed: October 15, 2018
    Publication date: October 17, 2019
    Inventors: Michael Van Der Puy, David J. Williams, Haridasan K. Nair, David Nalewajek
  • Publication number: 20190071585
    Abstract: The present invention generally relates to a novel polymeric material formed, at least in part, from monomeric material comprising 2,3,3,3-tetrafluoropropene (CF3CF?CH2, 1234yf), to polymeric compositions, to coating compositions, and to uses thereof.
    Type: Application
    Filed: November 2, 2018
    Publication date: March 7, 2019
    Inventors: DAVID NALEWAJEK, ANDREW J. POSS, CHERYL CANTLON, RAJIV R. SINGH, CHANGQING LU, THOMAS CANTIE
  • Publication number: 20180371133
    Abstract: In accordance with the present invention, aqueous emulsion polymerization processes of synthesizing 2,3,3,3-tetrafluoropropene/vinylidene fluoride copolymers having 2,3,3,3-tetrafluoropropene as the major monomer unit are provided.
    Type: Application
    Filed: March 27, 2018
    Publication date: December 27, 2018
    Inventors: Changqing Lu, Andrew J. Poss, Rajiv R. Singh, David Nalewajek, Cheryl Cantlon
  • Publication number: 20180343858
    Abstract: A copolymer comprising trans-1,3,3,3-tetrafluoropropene units and vinylidene fluoride units, and methods of making the same. A method of preventing biofouling on an article of manufacture, comprising applying such copolymer to the article of manufacture. A process of preparing a surface having a surface energy of between about 20 and about 30 mJ/m2, comprising applying such a copolymer to a support. A method of preventing accumulation of ice on an article of manufacture, comprising applying such a copolymer to an article of manufacture. A method of preparing a polymer, comprising a step of adding trans-1,3,3,3-tetrafluoropropene/vinylidene fluoride copolymer as a polymer processing additive/aid to said polymer.
    Type: Application
    Filed: August 22, 2018
    Publication date: December 6, 2018
    Inventors: Changqing Lu, Andrew J. Poss, Rajiv R. Singh, David Nalewajek, Cheryl Cantlon
  • Patent number: 10021879
    Abstract: Fumigant compositions including hexafluoropropylene oxide (HFPO) and methods of preparing such compositions are provided. The fumigant compositions may be suitable for use as soil fumigant compositions and structural fumigant compositions against a variety of undesirable species such as weeds, nematodes, pathogens, animals and insects. The fumigant compositions also have low toxicity and low Global Warming Potential (GWP).
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: July 17, 2018
    Assignee: Honeywell International Inc.
    Inventors: David Nalewajek, Andrew J. Poss, Cheryl L. Cantlon
  • Publication number: 20180142379
    Abstract: Fibers and methods of producing fibers comprising fluorinated polymers having comonomers of tetrafluoropropene are provided. Methods may include providing a solution having a fluorinated polymer dissolved in a solvent, wherein at least one monomer of the polymer comprises a tetrafluoropropene, exposing the solution to an electrostatic field between the solution and a collection electrode, and forming fibers from the solution fluorinated polymer. Fibers may include a fluorinated polymer, wherein at least one of the monomers of the fluorinated polymer comprises tetrafluoropropene.
    Type: Application
    Filed: November 3, 2017
    Publication date: May 24, 2018
    Inventors: Andrew J. Poss, David Nalewajek, Cheryl L. Cantlon, Changqing Lu, Shiming Wo
  • Patent number: 9963531
    Abstract: In accordance with the present invention, aqueous emulsion polymerization processes of synthesizing 2,3,3,3-tetrafluoropropene/vinylidene fluoride copolymers having 2,3,3,3-tetrafluoropropene as the major monomer unit are provided.
    Type: Grant
    Filed: April 2, 2016
    Date of Patent: May 8, 2018
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Changqing Lu, Andrew J. Poss, Rajiv R. Singh, David Nalewajek, Cheryl Cantlon
  • Publication number: 20180077932
    Abstract: Fumigant compositions including hexafluoropropylene oxide (HFPO) and methods of preparing such compositions are provided. The fumigant compositions may be suitable for use as soil fumigant compositions and structural fumigant compositions against a variety of undesirable species such as weeds, nematodes, pathogens, animals and insects. The fumigant compositions also have low toxicity and low Global Warming Potential (GWP).
    Type: Application
    Filed: September 19, 2017
    Publication date: March 22, 2018
    Inventors: David Nalewajek, Andrew J. Poss, Cheryl L. Cantlon
  • Publication number: 20170240666
    Abstract: The present invention relates to methods of producing polymerized 2,3,3,3-tetrafluoropropene (poly-1234yf) using one or a combination of the techniques provided herein. In certain embodiments, such techniques include (1) emulsion polymerization; (2) suspension polymerization; (3) solution polymerization; (4) supercritical carbon dioxide polymerization; (5) transition metal catalyzed polymerization; (6) radiation or thermal polymerization; and combinations thereof. A wide array of initiators, catalysts, and solvents may be used in such polymerization processes and may include, but are not limited to, (1) radical initiators; (2) ionic initiators; and (3) single-site and multiple-site catalysts.
    Type: Application
    Filed: May 1, 2017
    Publication date: August 24, 2017
    Inventors: CHANGQING LU, ANDREW J. POSS, DAVID NALEWAJEK, CHERYL CANTLON, RAJIV R. SINGH
  • Publication number: 20170165613
    Abstract: Hollow fiber membranes comprising fluoro-copolymers, and processes of making and using the hollow fiber membranes are described. The fluoro-copolymers have a weight average molecular weight between about 100,000 and about 500,000 Daltons. The fluoro-copolymer comprises trans-1,3,3,3-tetrafluoropropene monomers and vinylidene difluoride monomers, and at least 50 wt % of the fluoro-copolymer comprises trans-1,3,3,3-tetrafluoropropene monomers.
    Type: Application
    Filed: December 6, 2016
    Publication date: June 15, 2017
    Inventors: David Nalewajek, Andrew Joseph Poss