Patents by Inventor Kamesh R. Vyakaranam

Kamesh R. Vyakaranam 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: 20180043584
    Abstract: The present invention relates to a process to reduce internal stresses in insulation molded onto complex pipes, preferably complex subsea pipe, to reduce cracking in the molded insulation. Insulation materials applies to complex pipes comprising branches, i.e., valves, and the like, may be susceptible to cracking at, or near where the branch connects to the pipe as the coating of insulation material cures or hardens. The process of the present invention aims to reduce post molded cracking by reducing molded in stress at the branch/pipe junction. This is accomplished by providing a preform at or near a branch/pipe junction prior to applying the coating of insulation material.
    Type: Application
    Filed: March 18, 2016
    Publication date: February 15, 2018
    Inventors: Jie Feng, Mark W. Brown, Xue Chen, Pankaj Gupta, Dwight D. Latham, Liangkai Ma, Michael T. Malanga, Rujul M. Mehta, Kamesh R. Vyakaranam, Jeffrey D. Wenzel, Jeffery D. Zawisza
  • Publication number: 20170275427
    Abstract: A multistage filament winding process for manufacturing a composite article using a dual chemistry formulation including the steps of (a) providing a dual chemistry formulation containing components to effectuate dual cure of the formulation; (b) winding fibers on a liner or on a mandrel; (c) impregnating the wound fibers of step (b) with the dual chemistry formulation; (d) activating a first reaction (A) by UV or thermal-free radical initiation sufficient to form first macroscopic gels and to allow the first macroscopic gels to phase separate from the remaining substantially unreacted components in the formulation; (e) optionally, activating a second reaction by heating through IR lamps or other heating apparatus and controlling the second reaction sufficient to form second macroscopic gels subsequent to the formation of the first macroscopic gels which have gelled and phase separated in the formulation; (f) repeating steps (a)-(d) until a composite article having a predetermined thickness is formed; and (g)
    Type: Application
    Filed: November 24, 2015
    Publication date: September 28, 2017
    Inventors: Asjad Shafi, Krishnan Karunakaran, Kamesh R. Vyakaranam
  • Patent number: 9758615
    Abstract: Elastomers are prepared from a reaction mixture that contains a polyene compound, an epoxy resin, a thiol curing agent and a basic catalyst. The polyene compound has an average of at least two groups containing aliphatic carbon-carbon double bonds capable of reaction with a thiol group. At least one of said aliphatic carbon-carbon double bonds is separated from each other said aliphatic carbon-carbon double bond by an aliphatic spacer group having a weight of at least 500 atomic mass units. These elastomers are typically phase-separated materials having good elongation and tensile properties.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: September 12, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: William Heath, Phillip S. Athey, Nathan Wilmot, Harshad M. Shah, Kamesh R. Vyakaranam, Nicole Knight, Adam C. Colson
  • Publication number: 20160168416
    Abstract: A flooring coating composition includes a coating agent that is a reaction product of an epoxy based formulation, the epoxy based formulation being at least one of an epoxy prepolymer formulation, an epoxy-silane hybrid formulation, and an epoxy thiol acrylate formulation. The coating agent in a cured state exhibits a first tan delta peak between a first temperature range of 75 C to 0 C and a second tan delta peak between a second temperature range of 20 C and 75 C, according to a tan delta plot over a range of temperatures. A value of the first tan delta peak and a value of the second tan delta peak each represents a ratio of a loss modulus of the coating agent and a storage modulus of the coating agent at a specific temperature within the range of temperatures, as measured according to dynamic mechanical thermal analysis. The values of the first and the second tan delta peaks are from 0.10 to 0.80.
    Type: Application
    Filed: September 4, 2014
    Publication date: June 16, 2016
    Inventors: Venkat S Minnikanti, Marcus Pfarherr, Eva-Maria Michalski, Kamesh R. Vyakaranam, William H. Heath, Kwanho Chang, Rajesh H. Turakhia, Larissa Falsarella, Adam C. Colson
  • Patent number: 9290605
    Abstract: Flexible polyurethane foams are made using certain hydrolysable silane compounds in the foam formulation. The hydrolysable silane compounds contain at least one isocyanate-reactive group and at least one hydrolysable silane group. The presence of the hydrolysable silane compound in the foam formulation leads to improved tensile, tear and elongation properties without an adverse effect on other important foam properties such as resiliency and hysteresis loss.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: March 22, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Parvinder S. Walia, Bernard E. Obi, Venkat S. Minnikanti, William A. Koonce, Kamesh R. Vyakaranam, Ling Zhang, Sabrina Fregni
  • Patent number: 9181428
    Abstract: Moisture curable compositions including silylated polymers and methods for producing the same are provided. A two component moisture curable system for producing a cured or cross-linked silylated polymer having improved compression set properties is provided. The two component system comprises a first formulation and a second formulation. The first formulation comprises a silylated polymer, water, and filler and the second formulation comprises the silylated polymer, a curing catalyst comprising at least one Brønsted acid, and a moisture scavenger. The final cured formulation may have a compression set, determined by ASTM D395 or ISO 815-1, of less than 100%, and in some examples less than 50% and in some examples less than 15%. This demonstrated improvement in compression set not only allows the silylated polymers to be used in applications where cyclic loads are applied but also enhances product durability.
    Type: Grant
    Filed: September 17, 2012
    Date of Patent: November 10, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Kamesh R. Vyakaranam, Ling Zhang, Venkat S. Minnikanti, Dwight Latham, Sara Arshad, Rajat Duggal, William A. Koonce
  • Publication number: 20150315330
    Abstract: Elastomers are prepared from a reaction mixture that contains a polyene compound, an epoxy resin, a thiol curing agent and a basic catalyst. The polyene compound has an average of at least two groups containing aliphatic carbon-carbon double bonds capable of reaction with a thiol group. At least one of said aliphatic carbon-carbon double bonds is separated from each other said aliphatic carbon-carbon double bond by an aliphatic spacer group having a weight of at least 500 atomic mass units. These elastomers are typically phase-separated materials having good elongation and tensile properties.
    Type: Application
    Filed: December 18, 2013
    Publication date: November 5, 2015
    Inventors: William Heath, Phillip S. Athey, Nathan Wilmot, Harshad M. Shah, Kamesh R. Vyakaranam, Nicole Knight, Adam C. Colson
  • Patent number: 8987401
    Abstract: Methods of producing a composition comprising a crosslinkable silane-terminated polymer having at least one crosslinkable silyl group in each molecule are provided.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: March 24, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Kamesh R. Vyakaranam, Ling Zhang, Venkat S. Minnikanti, Rajat Duggal, William A. Koonce, Amarnath Singh, Phillip S. Athey
  • Publication number: 20150011722
    Abstract: Embodiments of the invention provide for methods of producing a composition comprising a crosslinkable silane-terminated polymer having at least one crosslinkable silyl group in each molecule. The method comprises providing a polymer having at least one unsaturated group and at least one alcoholic hydroxyl group in each molecule, adding to the polymer a compound having a hydrogen-silicon bond and a crosslinkable silyl group in each molecule and a hydrosilylation catalyst to thereby carry out a hydrosilylation reaction to form a composition comprising hydrosilylated polyoxyalkylene polymers, reacting the hydrosilylated polyoxyalkylene polymers with at least one isocyanate in the presence of a first tin-free catalyst to form an isocyanate reacted hydrosilylated polymer, and optionally reacting the isocyanate reacted hydrosilylated polymer with a polyol having a nominal functionality of at least 2 to form a polyol reacted crosslinkable silane-terminated polymer.
    Type: Application
    Filed: September 25, 2014
    Publication date: January 8, 2015
    Inventors: Kamesh R. Vyakaranam, Ling Zhang, William A. Koonce, Juan Carlos Medina, Ganesh Kailasam, Rajat Duggal, Nathan Wilmot
  • Patent number: 8907014
    Abstract: A copolymer-filled crosslinkable silane-terminated polymer having at least one crosslinkable silyl group in each molecule is provided. The copolymer-filled crosslinkable silane-terminated polymer is the reaction product of a copolymer-filled polyol and an isocyanate capped hydrosilylated polymer. The isocyanate capped hydrosilylated polymer is the reaction product of at least one isocyanate and a hydrosilylated polymer. The hydrosilylated polymer is the reaction product of a polymer having at least one unsaturated group and at least one alcoholic group in each molecule and a compound having a hydrogen-silicon bond and a crosslinkable silyl group in each molecule. The copolymer-filled crosslinkable silane-terminated polymers exhibit improved modulus and tensile strength properties while maintaining elongation properties.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: December 9, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Kamesh R. Vyakaranam, William A. Koonce, Ling Zhang, Jean-Luc Roser
  • Patent number: 8877885
    Abstract: Embodiments of the invention provide for methods of producing a composition comprising a crosslinkable silane-terminated polymer having at least one crosslinkable silyl group in each molecule. The method comprises providing a polymer having at least one unsaturated group and at least one alcoholic hydroxyl group in each molecule, adding to the polymer a compound having a hydrogen-silicon bond and a crosslinkable silyl group in each molecule and a hydrosilylation catalyst to thereby carry out a hydrosilylation reaction to form a composition comprising hydrosilylated polyoxyalkylene polymers, reacting the hydrosilylated polyoxyalkylene polymers with at least one isocyanate in the presence of a first tin-free catalyst to form an isocyanate reacted hydrosilylated polymer, and optionally reacting the isocyanate reacted hydrosilylated polymer with a polyol having a nominal functionality of at least 2 to form a polyol reacted crosslinkable silane-terminated polymer.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: November 4, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Kamesh R. Vyakaranam, Ling Zhang, William A. Koonce, Juan Carlos Medina, Ganesh Kailasam, Rajat Duggal, Nathan Wilmot
  • Publication number: 20140309372
    Abstract: A copolymer-filled crosslinkable silane-terminated polymer having at least one crosslinkable silyl group in each molecule is provided. The copolymer-filled crosslinkable silane-terminated polymer is the reaction product of a copolymer-filled polyol and an isocyanate capped hydrosilylated polymer. The isocyanate capped hydrosilylated polymer is the reaction product of at least one isocyanate and a hydrosilylated polymer. The hydrosilylated polymer is the reaction product of a polymer having at least one unsaturated group and at least one alcoholic group in each molecule and a compound having a hydrogen-silicon bond and a crosslinkable silyl group in each molecule. The copolymer-filled crosslinkable silane-terminated polymers exhibit improved modulus and tensile strength properties while maintaining elongation properties.
    Type: Application
    Filed: June 14, 2012
    Publication date: October 16, 2014
    Applicant: Dow Global Technologies LLC
    Inventors: Kamesh R. Vyakaranam, William A. Koonce, Ling Zhang, Jean-Luc Roser
  • Patent number: 8822606
    Abstract: Embodiment of the invention provide for compositions having at least one crosslinkable silyl group in each molecule. The crosslinkable silane-terminated polymer may include a reaction product of at least a polyol having a nominal functionality of at least 2 and a isocyanate capped hydrosilylated polymer. The isocyanate capped hydrosilylated polymer may include a reaction product of at least one isocyanate and a hydrosilylated polymer. The hydrosilylated polymer may include a reaction product of a the reaction of at least a) a polymer having at least one unsaturated group and at least one alcoholic hydroxyl group in each molecule and having a number average molecular weight of between about 100 and about 5000 and b) a compound having a hydrogen-silicon bond and a crosslinkable silyl group in each molecule.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: September 2, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Ling Zhang, Kamesh R. Vyakaranam, Sara Arshad, William A. Koonce
  • Publication number: 20140228515
    Abstract: Moisture curable compositions including silylated polymers and methods for producing the same are provided. A two component moisture curable system for producing a cured or cross-linked silylated polymer having improved compression set properties is provided. The two component system comprises a first formulation and a second formulation. The first formulation comprises a silylated polymer, water, and filler and the second formulation comprises the silylated polymer, a curing catalyst comprising at least one Brønsted acid, and a moisture scavenger. The final cured formulation may have a compression set, determined by ASTM D395 or ISO 815-1, of less than 100%, and in some examples less than 50% and in some examples less than 15%. This demonstrated improvement in compression set not only allows the silylated polymers to be used in applications where cyclic loads are applied but also enhances product durability.
    Type: Application
    Filed: September 17, 2012
    Publication date: August 14, 2014
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Kamesh R. Vyakaranam, Ling Zhang, Venkat S. Minnikanti, Dwight Latham, Sara Arshad, Rajat Duggal, William A. Koonce
  • Publication number: 20140179815
    Abstract: Flexible polyurethane foams are made using certain hydrolysable silane compounds in the foam formulation. The hydrolysable silane compounds contain at least one isocyanate-reactive group and at least one hydrolysable silane group. The presence of the hydrolysable silane compound in the foam formulation leads to improved tensile, tear and elongation properties without an adverse effect on other important foam properties such as resiliency and hysteresis loss.
    Type: Application
    Filed: August 16, 2012
    Publication date: June 26, 2014
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Parvinder S. Walia, Bernard E. Obi, Venkat S. Minnikanti, William A. Koonce, Kamesh R. Vyakaranam, Ling Zhang, Sabrina Fregni
  • Publication number: 20140100348
    Abstract: Methods of producing a composition comprising a crosslinkable silane-terminated polymer having at least one cross-linkable silyl group in each molecule are provided.
    Type: Application
    Filed: June 14, 2012
    Publication date: April 10, 2014
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Kamesh R. Vyakaranam, Ling Zhang, Venkat S. Minnikanti, Rajat Duggal, William A. Koonce, Amarnath Singh, Phillip S. Athey
  • Publication number: 20130096252
    Abstract: Embodiments of the invention provide for methods of producing a composition comprising a crosslinkable silane-terminated polymer having at least one crosslinkable silyl group in each molecule. The method comprises providing a polymer having at least one unsaturated group and at least one alcoholic hydroxyl group in each molecule, adding to the polymer a compound having a hydrogen-silicon bond and a crosslinkable silyl group in each molecule and a hydrosilylation catalyst to thereby carry out a hydrosilylation reaction to form a composition comprising hydrosilylated polyoxyalkylene polymers, reacting the hydrosilylated polyoxyalkylene polymers with at least one isocyanate in the presence of a first tin-free catalyst to form an isocyanate reacted hydrosilylated polymer, and optionally reacting the isocyanate reacted hydrosilylated polymer with a polyol having a nominal functionality of at least 2 to form a polyol reacted crosslinkable silane-terminated polymer.
    Type: Application
    Filed: June 29, 2011
    Publication date: April 18, 2013
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Kamesh R. Vyakaranam, Ling Zhang, William A. Koonce, Juan Carlos Medina, Ganesh Kailasam, Rajat Duggal, Nathan Wilmot
  • Publication number: 20130090429
    Abstract: Embodiment of the invention provide for compositions having at least one crosslinkable silyl group in each molecule. The crosslinkable silane-terminated polymer may include a reaction product of at least a polyol having a nominal functionality of at least 2 and a isocyanate capped hydrosilylated polymer. The isocyanate capped hydrosilylated polymer may include a reaction product of at least one isocyanate and a hydrosilylated polymer. The hydrosilylated polymer may include a reaction product of a the reaction of at least a) a polymer having at least one unsaturated group and at least one alcoholic hydroxyl group in each molecule and having a number average molecular weight of between about 100 and about 5000 and b) a compound having a hydrogen-silicon bond and a crosslinkable silyl group in each molecule.
    Type: Application
    Filed: June 29, 2011
    Publication date: April 11, 2013
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Ling Zhang, Kamesh R. Vyakaranam, Sara Arshad, William A. Koonce
  • Publication number: 20120095133
    Abstract: Compositions, thermoset compositions, and methods of forming the same, including an epoxy resin, a curing agent, and a silicone-acrylate core/shell rubber are disclosed.
    Type: Application
    Filed: July 8, 2010
    Publication date: April 19, 2012
    Applicant: Dow Global Technologies LLC
    Inventors: Kamesh R. Vyakaranam, Lameck Banda, Michael J. Mullins, Marvin L. Dettloff, Jacob W. Strother