Patents by Inventor Umesh C. Desai

Umesh C. Desai 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: 20230279277
    Abstract: An adhesive composition comprising an epoxy compound and a compound comprising at least one aminimide functional group is disclosed. The compound comprising the at least one aminimide functional group is present in an amount from 2-8% by weight based on total weight of the adhesive composition and reacts with the epoxy compound upon activation by an external energy source. The adhesive composition also may comprise an amidine salt.
    Type: Application
    Filed: April 28, 2023
    Publication date: September 7, 2023
    Applicant: PPG Industries Ohio, Inc.
    Inventors: Tien-Chieh Chao, Masayuki Nakajima, Hongying Zhou, Shanti Swarup, Umesh C. Desai
  • Patent number: 11674062
    Abstract: An adhesive composition comprising an epoxy compound and a compound comprising at least one aminimide functional group is disclosed. The compound comprising the at least one aminimide functional group is present in an amount from 2-8% by weight based on total weight of the adhesive composition and reacts with the epoxy compound upon activation by an external energy source. The adhesive composition also may comprise an amidine salt.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: June 13, 2023
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Tien-Chieh Chao, Masayuki Nakajima, Hongying Zhou, Shanti Swarup, Umesh C. Desai
  • Patent number: 11629276
    Abstract: Disclosed herein are compositions including (a) a first component comprising (1) an epoxy-adduct that is the reaction product of reactants comprising a first epoxy compound, a polyol, and an anhydride and/or a diacid and (2) a second epoxy compound; (b) rubber particles having a core/shell structure and/or graphenic carbon particles; and (c) a second component that chemically reacts with the first component at ambient or slightly thermal conditions. Also disclosed herein are compositions including (a) an epoxy-capped flexibilizer; (b) a heat-activated latent curing agent; and optionally (c) rubber particles having a core/shell structure and/or graphenic carbon particles; (d) an epoxy/CTBN adduct; and/or (e) an epoxy/dimer acid adduct. The heat-activated latent curing agent may include at least one reaction product of reactants including an epoxy compound and an amine and/or an alkaloid.
    Type: Grant
    Filed: March 11, 2021
    Date of Patent: April 18, 2023
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Umesh C. Desai, Tien-Chieh Chao, Masayuki Nakajima, Kaliappa G. Ragunathan
  • Publication number: 20220213362
    Abstract: Disclosed herein are compositions including (a) a first component comprising (1) an epoxy-adduct that is the reaction product of reactants comprising a first epoxy compound, a polyol, and an anhydride and/or a diacid and (2) a second epoxy compound; (b) rubber particles having a core/shell structure and/or graphenic carbon particles; and (c) a second component that chemically reacts with the first component at ambient or slightly thermal conditions. Also disclosed herein are compositions including (a) an epoxy-capped flexibilizer; (b) a heat-activated latent curing agent; and optionally (c) rubber particles having a core/shell structure and/or graphenic carbon particles; (d) an epoxy/CTBN adduct; and/or (e) an epoxy/dimer acid adduct. The heat-activated latent curing agent may include at least one reaction product of reactants including an epoxy compound and an amine and/or an alkaloid.
    Type: Application
    Filed: March 17, 2022
    Publication date: July 7, 2022
    Applicant: PPG Industries Ohio, Inc.
    Inventors: Umesh C. Desai, Tien-Chieh Chao, Masayuki Nakajima, Kaliappa G. Ragunathan
  • Publication number: 20220204822
    Abstract: Disclosed herein are compositions including (a) a first component comprising (1) an epoxy-adduct that is the reaction product of reactants comprising a first epoxy compound, a polyol, and an anhydride and/or a diacid and (2) a second epoxy compound; (b) rubber particles having a core/shell structure and/or graphenic carbon particles; and (c) a second component that chemically reacts with the first component at ambient or slightly thermal conditions. Also disclosed herein are compositions including (a) an epoxy-capped flexibilizer; (b) a heat-activated latent curing agent; and optionally (c) rubber particles having a core/shell structure and/or graphenic carbon particles; (d) an epoxy/CTBN adduct; and/or (e) an epoxy/dimer acid adduct. The heat-activated latent curing agent may include at least one reaction product of reactants including an epoxy compound and an amine and/or an alkaloid.
    Type: Application
    Filed: March 17, 2022
    Publication date: June 30, 2022
    Applicant: PPG Industries Ohio, Inc.
    Inventors: Umesh C. Desai, Tien-Chieh Chao, Masayuki Nakajima, Kaliappa G. Ragunathan
  • Publication number: 20220204823
    Abstract: Disclosed herein are compositions including (a) a first component comprising (1) an epoxy-adduct that is the reaction product of reactants comprising a first epoxy compound, a polyol, and an anhydride and/or a diacid and (2) a second epoxy compound; (b) rubber particles having a core/shell structure and/or graphenic carbon particles; and (c) a second component that chemically reacts with the first component at ambient or slightly thermal conditions. Also disclosed herein are compositions including (a) an epoxy-capped flexibilizer; (b) a heat-activated latent curing agent; and optionally (c) rubber particles having a core/shell structure and/or graphenic carbon particles; (d) an epoxy/CTBN adduct; and/or (e) an epoxy/dimer acid adduct. The heat-activated latent curing agent may include at least one reaction product of reactants including an epoxy compound and an amine and/or an alkaloid.
    Type: Application
    Filed: March 17, 2022
    Publication date: June 30, 2022
    Applicant: PPG Industries Ohio, Inc.
    Inventors: Umesh C. Desai, Tien-Chieh Chao, Masayuki Nakajima, Kaliappa G. Ragunathan
  • Publication number: 20210198538
    Abstract: Disclosed herein are compositions including (a) a first component comprising (1) an epoxy-adduct that is the reaction product of reactants comprising a first epoxy compound, a polyol, and an anhydride and/or a diacid and (2) a second epoxy compound; (b) rubber particles having a core/shell structure and/or graphenic carbon particles; and (c) a second component that chemically reacts with the first component at ambient or slightly thermal conditions. Also disclosed herein are compositions including (a) an epoxy-capped flexibilizer; (b) a heat-activated latent curing agent; and optionally (c) rubber particles having a core/shell structure and/or graphenic carbon particles; (d) an epoxy/CTBN adduct; and/or (e) an epoxy/dimer acid adduct. The heat-activated latent curing agent may include at least one reaction product of reactants including an epoxy compound and an amine and/or an alkaloid.
    Type: Application
    Filed: March 11, 2021
    Publication date: July 1, 2021
    Applicant: PPG Industries Ohio, Inc.
    Inventors: Umesh C. Desai, Tien-Chieh Chao, Masayuki Nakajima, Kaliappa G. Ragunathan
  • Patent number: 10947428
    Abstract: Disclosed herein are compositions including (a) a first component comprising (1) an epoxy-adduct that is the reaction product of reactants comprising a first epoxy compound, a polyol, and an anhydride and/or a diacid and (2) a second epoxy compound; (b) rubber particles having a core/shell structure and/or graphenic carbon particles; and (c) a second component that chemically reacts with the first component at ambient or slightly thermal conditions. Also disclosed herein are compositions including (a) an epoxy-capped flexibilizer; (b) a heat-activated latent curing agent; and optionally (c) rubber particles having a core/shell structure and/or graphenic carbon particles; (d) an epoxy/CTBN adduct; and/or (e) an epoxy/dimer acid adduct. The heat-activated latent curing agent may include at least one reaction product of reactants including an epoxy compound and an amine and/or an alkaloid.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: March 16, 2021
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Umesh C. Desai, Tien-Chieh Chao, Masayuki Nakajima, Kaliappa G. Ragunathan
  • Publication number: 20190330502
    Abstract: An adhesive composition comprising an epoxy compound and a compound comprising at least one aminimide functional group is disclosed. The compound comprising the at least one aminimide functional group is present in an amount from 2-8% by weight based on total weight of the adhesive composition and reacts with the epoxy compound upon activation by an external energy source. The adhesive composition also may comprise an amidine salt.
    Type: Application
    Filed: July 10, 2019
    Publication date: October 31, 2019
    Applicant: PPG Industries Ohio, Inc.
    Inventors: Tien-Chieh Chao, Masayuki Nakajima, Hongying Zhou, Shanti Swarup, Umesh C. Desai
  • Patent number: 10377928
    Abstract: An adhesive composition comprising an epoxy compound and a compound comprising at least one aminimide functional group is disclosed. The compound comprising the at least one aminimide functional group is present in an amount from 2-8% by weight based on total weight of the adhesive composition and reacts with the epoxy compound upon activation by an external energy source. The adhesive composition also may comprise an amidine salt.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: August 13, 2019
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Tien-Chieh Chao, Masayuki Nakajima, Hongying Zhou, Shanti Swarup, Umesh C. Desai
  • Publication number: 20170166789
    Abstract: An adhesive composition comprising an epoxy compound and a compound comprising at least one aminimide functional group is disclosed. The compound comprising the at least one aminimide functional group is present in an amount from 2-8% by weight based on total weight of the adhesive composition and reacts with the epoxy compound upon activation by an external energy source. The adhesive composition also may comprise an amidine salt.
    Type: Application
    Filed: December 10, 2015
    Publication date: June 15, 2017
    Inventors: Masayuki Nakajima, Tien-Chieh Chao, Hongying Zhou, Shanti Swarup, Umesh C. Desai
  • Patent number: 9562175
    Abstract: Disclosed herein are adhesive compositions comprising (a) a first component; (b) a second component that chemically reacts with said first component; and (c) graphenic carbon particles having an oxygen content of no more than 2 atomic weight percent. Disclosed herein are associated methods for forming the adhesive compositions and applying the adhesive compositions to a substrate to form a bonded substrate.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: February 7, 2017
    Assignee: PPG Industries Ohio, Inc.
    Inventors: David B. Asay, Tien-Chieh Chao, Umesh C. Desai, Cheng-Hung Hung, Masayuki Nakajima, Noel R. Vanier
  • Publication number: 20160153187
    Abstract: A laminated panel is disclosed that includes a first layer having an internal surface and an external surface, a second layer having an internal surface and an external surface, and a glue layer extending therebetween. The glue layer is produced from an aqueous dispersion of polymeric acrylic microparticles.
    Type: Application
    Filed: December 1, 2014
    Publication date: June 2, 2016
    Inventors: Umesh C. Desai, Ion Pelinescu, Tien-Chieh Chao
  • Publication number: 20160083633
    Abstract: Disclosed herein are compositions including (a) a first component comprising (1) an epoxy-adduct that is the reaction product of reactants comprising a first epoxy compound, a polyol, and an anhydride and/or a diacid and (2) a second epoxy compound; (b) rubber particles having a core/shell structure and/or graphenic carbon particles; and (c) a second component that chemically reacts with the first component at ambient or slightly thermal conditions. Also disclosed herein are compositions including (a) an epoxy-capped flexibilizer; (b) a heat-activated latent curing agent; and optionally (c) rubber particles having a core/shell structure and/or graphenic carbon particles; (d) an epoxy/CTBN adduct; and/or (e) an epoxy/dimer acid adduct. The heat-activated latent curing agent may include at least one reaction product of reactants including an epoxy compound and an amine and/or an alkaloid.
    Type: Application
    Filed: December 7, 2015
    Publication date: March 24, 2016
    Inventors: Umesh C. Desai, Tien-Chieh Chao, Masayuki Nakajima, Kaliappa G. Ragunathan
  • Publication number: 20150284289
    Abstract: Embodiments of the present invention relate to sizing compositions for glass fibers, fiber glass strands, and composites reinforced with fiber glass strands. In one embodiment, a sizing composition for glass fibers comprises a polyether carbamate. In another embodiment, such sizing compositions further comprise an alkylsilane. In yet other embodiments, such sizing compositions further comprise an aminofunctional siloxane. In an embodiment of the present invention, a sizing composition for glass fibers comprises a polyether carbamate, an alkylsilane, and an aminofunctional siloxane.
    Type: Application
    Filed: April 1, 2015
    Publication date: October 8, 2015
    Inventors: Pu Gu, James C. Watson, Langqiu Xu, Umesh C. Desai
  • Patent number: 8877848
    Abstract: The present invention provides an aqueous polymer dispersion for vibration damping comprising a film-forming polymer in the form of dispersed particles comprising a polymer phase P1 and different polymer phases P2 and P3; the polymer dispersion obtained by free radical emulsion polymerization. Controlling the difference in glass transition temperatures of the polymers in the various polymer phases results in effective sound damping as determined by a Damping Loss Factor of at least 0.1 over a temperature range of at least 40° C. determined at a frequency of 200 Hz over a temperature range of ?10 to 65° C. Use of a chain transfer agent in the polymerization of the various monomer charges results in good appearance in the resultant vibration damping coating.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: November 4, 2014
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Wei Wang, Tien-Chieh Chao, Umesh C. Desai, David Fenn
  • Publication number: 20140299270
    Abstract: Disclosed herein are adhesive compositions comprising (a) a first component; (b) a second component that chemically reacts with said first component; and (c) graphenic carbon particles having an oxygen content of no more than 2 atomic weight percent. Disclosed herein are associated methods for forming the adhesive compositions and applying the adhesive compositions to a substrate to form a bonded substrate.
    Type: Application
    Filed: June 24, 2014
    Publication date: October 9, 2014
    Inventors: David B. Asay, Tien-Chieh Chao, Umesh C. Desai, Cheng-Hung Hung, Masayuki Nakajima, Noel R. Vanier
  • Patent number: 8840962
    Abstract: The present invention is directed to a coating composition comprising: (i) an aqueous dispersion of polymeric particles; (ii) a polyether carbamate compound; (iii) a filler material; and (iv) an microparticle; and wherein after application to a substrate and after curing, the cured coating composition demonstrates a composite damping Loss Factor of 0.05 or greater at a frequency ranging from 100 to 6,300 Hz and comprises a surface that is substantially free of defects.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: September 23, 2014
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Umesh C. Desai, Shanti Swarup, Kaliappa G. Ragunathan, Paul Pcolinsky
  • Patent number: 8796361
    Abstract: Disclosed herein are adhesive compositions comprising (a) a first component; (b) a second component that chemically reacts with said first component; and (c) graphenic carbon particles having a compressed density of 0.9 or less. Disclosed herein are associated methods for forming the adhesive compositions and applying the adhesive compositions to a substrate to form a bonded substrate.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: August 5, 2014
    Assignee: PPG Industries Ohio, Inc.
    Inventors: David B. Asay, Tien-Chieh Chao, Umesh C. Desai, Cheng-Hung Hung, Masayuki Nakajima, Noel Vanier
  • Publication number: 20140150970
    Abstract: Disclosed herein are compositions including (a) a first component comprising (1) an epoxy-adduct that is the reaction product of reactants comprising a first epoxy compound, a polyol, and an anhydride and/or a diacid and (2) a second epoxy compound; (b) rubber particles having a core/shell structure and/or graphenic carbon particles; and (c) a second component that chemically reacts with the first component at ambient or slightly thermal conditions. Also disclosed herein are compositions including (a) an epoxy-capped flexibilizer; (b) a heat-activated latent curing agent; and optionally (c) rubber particles having a core/shell structure and/or graphenic carbon particles; (d) an epoxy/CTBN adduct; and/or (e) an epoxy/dimer acid adduct. The heat-activated latent curing agent may include at least one reaction product of reactants including an epoxy compound and an amine and/or an alkaloid.
    Type: Application
    Filed: June 14, 2013
    Publication date: June 5, 2014
    Inventors: Umesh C. Desai, Tien-Chieh Chao, Masayuki Nakajima, Kaliappa G. Ragunathan