Patents by Inventor Bindu Krishnan

Bindu Krishnan 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: 20250257169
    Abstract: A composition comprises (A) a carbinol-functional siloxane; and (B) a polyisocyanate. The carbinol-functional siloxane (A) is not prepared via a hydrosilylation reaction. In addition, the composition comprises less than 5 mole % of (C) compounds of formula R—Oa—(CbH2bO)c—R1, where R is an ethylenically unsaturated group, R1 is H or a hydrocarbyl group, subscript a is 0 or 1, subscript b is independently selected from 2 to 4 in each moiety indicated by subscript c, and subscript c is from 0 to 500, with the proviso that subscripts a and c are not simultaneously 0. A urethane prepolymer comprising the reaction product of the composition is also disclosed.
    Type: Application
    Filed: April 7, 2023
    Publication date: August 14, 2025
    Inventors: Elizabeth DHULST, Edward NYUTU, Krishnaja DUVVURI, Michael TULCHINSKY, Adam GRZESIAK, Mihee KIM, Stephanie HUGHES, Qichun WAN, Haoquan LI, Bindu KRISHNAN
  • Patent number: 12344712
    Abstract: A silicone-polyacrylate copolymer has the formula Xg[ZjYo]c, where each X is an independently selected silicone moiety having a particular structure, each Y is an independently selected polyacrylate moiety, each Z is an independently selected siloxane moiety, subscript c is from 1 to 150, subscript g is >1, 0?j<2, and 0<o<2, with the proviso that j+o=2 in each moiety indicated by subscript c. Methods of preparing the silicone-polyacrylate copolymer are also disclosed. Further, a sealant is disclosed, the sealant comprising the silicone-polyacrylate copolymer and a condensation-reaction catalyst.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: July 1, 2025
    Assignees: Dow Silicones Corporation, Dow Global Technologies LLC
    Inventors: Emmanuel Duquesne, Michael S. Ferritto, Martin Grasmann, Brian Harkness, William Johnson, Bindu Krishnan, Elizabeth Santos, Justin Scherzer, Jeanette Young, Bizhong Zhu
  • Patent number: 12281245
    Abstract: An adhesive composition for use in flooring applications that includes a moisture curable polymer system; a calcium carbonate filler system having a first spheroidal particle of calcium carbonate having an equivalent spherical mean diameter of 70 nanometer (nm) to 15 micrometer (?m) and a second spheroidal particle of calcium carbonate having an equivalent spherical mean diameter of greater than 15 ?m to 200 ?m; a seed oil based fatty acid ester; and a silane based adhesion promoter. The adhesive composition provides low viscosity along with high shear resistance, which helps to retain the troweled ridges to enable maximum coverage.
    Type: Grant
    Filed: January 3, 2020
    Date of Patent: April 22, 2025
    Assignee: Dow Global Technologies LLC
    Inventors: Bindu Krishnan, Qiuyun Xu, Leonardo C. Lopez
  • Patent number: 12146034
    Abstract: A silicone-polyester copolymer has the formula Xg[ZjYo]c, where each X is an independently selected silicone moiety having a particular structure, each Y is an independently selected polyester moiety, each Z is an independently selected siloxane moiety, subscript c is from 1 to 150, subscript g is >1, 0?j<2, and 0<o<2, with the proviso that j+o=2 in each moiety indicated by subscript c. Methods of preparing the silicone-polyester copolymer are also disclosed. Further, a sealant is disclosed, the sealant comprising the silicone-polyester copolymer and a condensation-reaction catalyst.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: November 19, 2024
    Assignees: Dow Silicones Corporation, Dow Global Technologies LLC
    Inventors: Emmanuel Duquesne, Martin Grasmann, Brian Harkness, William Johnson, Bindu Krishnan, Elizabeth Santos, Justin Scherzer, Jeanette Young, Bizhong Zhu
  • Publication number: 20230407154
    Abstract: The invention is directed to a toughener for epoxy adhesives, the toughener being a reaction product of a bisphenolic blocked PU toughener with a diglycidyl ether-bisphenol product such as liquid DGEBA. The invention includes adhesives comprising the inventive tougheners, methods of using the tougheners and adhesives comprising them, as well as cured inventive adhesives and products comprising them.
    Type: Application
    Filed: August 28, 2023
    Publication date: December 21, 2023
    Inventors: Andreas Lutz, Daniel Schneider, Bindu Krishnan, Tyler Auvil
  • Patent number: 11807775
    Abstract: A silicone-organic copolymer has the formula Xg[ZjYo]c, where each X is an independently selected silicone moiety having a particular structure, each Y is an independently selected polyacrylate moiety, each Z is an independently selected siloxane moiety, subscript c is from 1 to 150, subscript g is >1, 0<j<2, and 0<o<2, with the proviso that j+o=2 in each moiety indicated by subscript c. Methods of preparing the silicone-organic copolymer are also disclosed. Further, a sealant is disclosed, the sealant comprising the silicone-organic copolymer and a condensation-reaction catalyst.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: November 7, 2023
    Assignees: Dow Silicones Corporation, Dow Global Technologies LLC
    Inventors: Emmanuel Duquesne, Michael S. Ferrito, Martin Grasmann, Brian Harkness, William Johnson, Bindu Krishnan, Elizabeth Santos, Justin Scherzer, Jeanette Young, Bizhong Zhu
  • Publication number: 20220267535
    Abstract: A silicone-polyether copolymer has the formula (X-D2)g-Y, where each X is an independently selected silicone moiety having a particular structure, D2 is a divalent hydrocarbon group, subscript g is greater than 1, and Y is a linear or branched polyether moiety. A method of preparing the silicone-polyether copolymer comprising reacting a polyether compound and an organosilicon compound in the presence of a hydrosilylation-reaction catalyst. A sealant is also disclosed, the sealant comprising the silicone-polyether copolymer and a condensation-reaction catalyst.
    Type: Application
    Filed: May 12, 2022
    Publication date: August 25, 2022
    Inventors: Martin GRASMANN, David HAGAN, Brian HARKNESS, William H. HEATH, Stephen Michael HLINKA, II, Eric JOFFRE, William JOHNSON, Bindu KRISHNAN, Jeanette YOUNG, Bizhong ZHU
  • Publication number: 20220153994
    Abstract: Polyurethanes are made by reacting, in one or more reaction steps, a) at least one organic polyisocyanate, b-1) one or more polyols having a hydroxyl equivalent weight of greater than 250 g/mol and a nominal hydroxyl functionality of 2 to 4 and b-2) at least one alkoxylated Mannich base to produce a polyurethane polymer having a density of at least 750 kg/m3 and a hard segment content of 20 to 80% by weight.
    Type: Application
    Filed: March 23, 2020
    Publication date: May 19, 2022
    Inventors: Bindu Krishnan, Praveen Agarwal, William J. Harris, Qiuyun Xu, Rajat Duggal
  • Publication number: 20220145147
    Abstract: An adhesive composition for use in flooring applications that includes a moisture curable polymer system; a calcium carbonate filler system having a first spheroidal particle of calcium carbonate having an equivalent spherical mean diameter of 70 nanometer (nm) to 15 micrometer (?m) and a second spheroidal particle of calcium carbonate having an equivalent spherical mean diameter of greater than 15 ?m to 200 ?m; a seed oil based fatty acid ester; and a silane based adhesion promoter. The adhesive composition provides low viscosity along with high shear resistance, which helps to retain the troweled ridges to enable maximum coverage.
    Type: Application
    Filed: January 3, 2020
    Publication date: May 12, 2022
    Applicant: Dow Global Technologies LLC
    Inventors: Bindu Krishnan, Qiuyun Xu, Leonardo C. Lopez
  • Patent number: 11274236
    Abstract: A one-component toughened epoxy-modified polyurethane and/or urea adhesive includes a mixture of dicyandiamide and a dihdyrazide as curing agents. The mixture of curing agents permits the adhesive to be cured at lower temperatures while developing good adhesive and mechanical properties in the cured adhesive.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: March 15, 2022
    Assignee: DDP SPECIALTY ELECTRONIC MATERIALS US, LLC
    Inventors: Tyler Auvil, Bindu Krishnan, Andreas Lutz, Felix Koch, Cody Clinton
  • Publication number: 20220064383
    Abstract: A silicone-polyacrylate copolymer has the formula Xg[ZjYo]c, where each X is an independently selected silicone moiety having a particular structure, each Y is an independently selected polyacrylate moiety, each Z is an independently selected siloxane moiety, subscript c is from 1 to 150, subscript g is >1, 0?j<2, and 0<o<2, with the proviso that j+o=2 in each moiety indicated by subscript c. Methods of preparing the silicone-polyacrylate copolymer are also disclosed. Further, a sealant is disclosed, the sealant comprising the silicone-polyacrylate copolymer and a condensation-reaction catalyst.
    Type: Application
    Filed: December 16, 2019
    Publication date: March 3, 2022
    Inventors: Emmanuel DUQUESNE, Michael S. FERRITO, Martin GRASMANN, Brian HARKNESS, William JOHNSON, Bindu KRISHNAN, Elizabeth SANTOS, Justin SCHERZER, Jeanette YOUNG, Bizhong ZHU
  • Publication number: 20220064482
    Abstract: A silicone-organic copolymer has the formula Xg[ZjYo]c, where each X is an independently selected silicone moiety having a particular structure, each Y is an independently selected polyacrylate moiety, each Z is an independently selected siloxane moiety, subscript c is from 1 to 150, subscript g is >1, 0<j<2, and 0<o<2, with the proviso that j+o=2 in each moiety indicated by subscript c. Methods of preparing the silicone-organic copolymer are also disclosed. Further, a sealant is disclosed, the sealant comprising the silicone-organic copolymer and a condensation-reaction catalyst.
    Type: Application
    Filed: December 16, 2019
    Publication date: March 3, 2022
    Inventors: Emmanuel DUQUESNE, Michael S. FERRITO, Martin GRASMANN, Brian HARKNESS, William JOHNSON, Bindu KRISHNAN, Elizabeth SANTOS, Justin SCHERZER, Jeanette YOUNG, Bizhong ZHU
  • Publication number: 20220041813
    Abstract: A silicone-polyester copolymer has the formula Xg[ZjYo]c, where each X is an independently selected silicone moiety having a particular structure, each Y is an independently selected polyester moiety, each Z is an independently selected siloxane moiety, subscript c is from 1 to 150, subscript g is >1, 0?j<2, and 0<o<2, with the proviso that j+o=2 in each moiety indicated by subscript c. Methods of preparing the silicone-polyester copolymer are also disclosed. Further, a sealant is disclosed, the sealant comprising the silicone-polyester copolymer and a condensation-reaction catalyst.
    Type: Application
    Filed: December 16, 2019
    Publication date: February 10, 2022
    Inventors: Emmanuel DUQUESNE, Martin GRASMANN, Brian HARKNESS, William JOHNSON, Bindu KRISHNAN, Elizabeth SANTOS, Justin SCHERZER, Jeanette YOUNG, Bizhong ZHU
  • Publication number: 20210371717
    Abstract: The invention is directed to a toughener for epoxy adhesives, the toughener being a reaction product of a bisphenolic blocked PU toughener with a diglycidyl ether-bisphenol product such as liquid DGEBA. The invention includes adhesives comprising the inventive tougheners, methods of using the tougheners and adhesives comprising them, as well as cured inventive adhesives and products comprising them.
    Type: Application
    Filed: August 6, 2021
    Publication date: December 2, 2021
    Inventors: Andreas Lutz, Daniel Schneider, Bindu Krishnan, Tyler Auvil
  • Patent number: 10800921
    Abstract: An isocyanate-functional silicone-polyether copolymer having a particular structure is disclosed. A method of preparing the isocyanate-functional silicone-polyether copolymer is also disclosed, the method comprising reacting a polyether compound and an organosilicon compound to give the isocyanate-functional silicone-polyether copolymer. A silicone-polyether-urethane copolymer formed therewith, as well as a method of preparing the silicone-polyether-urethane copolymer, are also disclosed. Sealants comprising the isocyanate-functional silicone-polyether copolymer and/or the silicone-polyether-urethane copolymer are further disclosed.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: October 13, 2020
    Assignees: DOW SILICONES CORPORATION, DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Martin Grasmann, David Hagan, Brian Harkness, William H. Heath, Stephen Michael Hlinka, II, Eric Joffre, William Johnson, Bindu Krishnan, Qiuyun Xu, Bizhong Zhu
  • Patent number: 10738191
    Abstract: A silicone-polyether copolymer has the formula X—Y, where X is a silicone moiety having a particular structure and Y is a polyether moiety. An isocyanate-functional silicone-polyether copolymer formed therewith is also disclosed. Further, a silicone-polyether-urethane copolymer formed with the isocyanate-functional silicone-polyether copolymer is disclosed. Related methods of preparation as well as sealants and cured products thereof are further disclosed.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: August 11, 2020
    Assignees: Dow Silicones Corporation, Dow Global Technologies LLC
    Inventors: Martin Grasmann, David Hagan, Brian Harkness, William H. Heath, Stephen Michael Hlinka, II, Eric Joffre, William Johnson, Bindu Krishnan, Qiuyun Xu, Bizhong Zhu
  • Publication number: 20200181404
    Abstract: The invention is directed to a toughener for epoxy adhesives, the toughener comprising both soft and rubber units, and may be described as a capped soft-rubber PU toughener. The invention includes the tougheners and methods of making them, as well as adhesives comprising the inventive tougheners, methods of using the tougheners and adhesives comprising them, and cured inventive adhesives and products comprising them.
    Type: Application
    Filed: February 13, 2020
    Publication date: June 11, 2020
    Inventors: ANDREAS LUTZ, DANIEL SCHNEIDER, SERGIO GRUNDER, BINDU KRISHNAN
  • Patent number: 10676568
    Abstract: A silicone-polyether copolymer has the formula Xg—Y, where each X is an independently selected silicone moiety having a particular structure, Y is a linear or branched polyether moiety, and subscript g is on average more than 1. A method of preparing the silicone-polyether copolymer comprising reacting a polyether compound and an organosilicon compound in the presence of a hydrosilylation-reaction catalyst. A sealant is also disclosed, the sealant comprising the silicone-polyether copolymer and a condensation-reaction catalyst.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: June 9, 2020
    Assignees: Dow Global Technologies LLC, Dow Silicones Corporation
    Inventors: Martin Grasmann, David Hagan, Brian Harkness, William H. Heath, Stephen Michael Hlinka, II, Eric Joffre, William Johnson, Bindu Krishnan, Jeanette Young, Bizhong Zhu
  • Publication number: 20200157279
    Abstract: A silicone-polyether copolymer has the formula (X-D2)g-Y, where each X is an independently selected silicone moiety having a particular structure, D2 is a divalent hydrocarbon group, subscript g is greater than 1, and Y is a linear or branched polyether moiety. A method of preparing the silicone-polyether copolymer comprising reacting a polyether compound and an organosilicon compound in the presence of a hydrosilylation-reaction catalyst. A sealant is also disclosed, the sealant comprising the silicone-polyether copolymer and a condensation-reaction catalyst.
    Type: Application
    Filed: June 26, 2018
    Publication date: May 21, 2020
    Inventors: Martin GRASMANN, David HAGAN, Brian HARKNESS, William H. HEATH, Stephen Michael HLINKA, II, Eric JOFFRE, William JOHNSON, Bindu KRISHNAN, Jeanette YOUNG, Bizhong ZHU
  • Publication number: 20200131369
    Abstract: A silicone-polyether copolymer has the formula Xg—Y, where each X is an independently selected silicone moiety having a particular structure, Y is a linear or branched polyether moiety, and subscript g is on average more than 1. A method of preparing the silicone-polyether copolymer comprising reacting a polyether compound and an organosilicon compound in the presence of a hydrosilylation-reaction catalyst. A sealant is also disclosed, the sealant comprising the silicone-polyether copolymer and a condensation-reaction catalyst.
    Type: Application
    Filed: June 26, 2018
    Publication date: April 30, 2020
    Inventors: Martin GRASMANN, David HAGAN, Brian HARKNESS, William H. HEATH, Stephen Michael HLINKA, II, Eric JOFFRE, William JOHNSON, Bindu KRISHNAN, Jeanette YOUNG, Bizhong ZHU