Patents by Inventor Kaliappa G. Ragunathan
Kaliappa G. Ragunathan 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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Patent number: 11629276Abstract: 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: GrantFiled: March 11, 2021Date of Patent: April 18, 2023Assignee: PPG Industries Ohio, Inc.Inventors: Umesh C. Desai, Tien-Chieh Chao, Masayuki Nakajima, Kaliappa G. Ragunathan
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Publication number: 20220213362Abstract: 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: ApplicationFiled: March 17, 2022Publication date: July 7, 2022Applicant: PPG Industries Ohio, Inc.Inventors: Umesh C. Desai, Tien-Chieh Chao, Masayuki Nakajima, Kaliappa G. Ragunathan
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Publication number: 20220204822Abstract: 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: ApplicationFiled: March 17, 2022Publication date: June 30, 2022Applicant: PPG Industries Ohio, Inc.Inventors: Umesh C. Desai, Tien-Chieh Chao, Masayuki Nakajima, Kaliappa G. Ragunathan
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Publication number: 20220204823Abstract: 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: ApplicationFiled: March 17, 2022Publication date: June 30, 2022Applicant: PPG Industries Ohio, Inc.Inventors: Umesh C. Desai, Tien-Chieh Chao, Masayuki Nakajima, Kaliappa G. Ragunathan
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Publication number: 20210198538Abstract: 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: ApplicationFiled: March 11, 2021Publication date: July 1, 2021Applicant: PPG Industries Ohio, Inc.Inventors: Umesh C. Desai, Tien-Chieh Chao, Masayuki Nakajima, Kaliappa G. Ragunathan
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Patent number: 10947428Abstract: 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: GrantFiled: December 7, 2015Date of Patent: March 16, 2021Assignee: PPG Industries Ohio, Inc.Inventors: Umesh C. Desai, Tien-Chieh Chao, Masayuki Nakajima, Kaliappa G. Ragunathan
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Publication number: 20160083633Abstract: 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: ApplicationFiled: December 7, 2015Publication date: March 24, 2016Inventors: Umesh C. Desai, Tien-Chieh Chao, Masayuki Nakajima, Kaliappa G. Ragunathan
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Patent number: 8889815Abstract: The present invention provides polyurethane composition including: (a) at least one polyurethane including a reaction product of components comprising: (i) at least one polyisocyanate; (ii) at least one branched polyol having 4 to 18 carbon atoms and at least 3 hydroxyl groups; and (iii) at least one diol having 2 to 18 carbon atoms; and (b) at least one reinforcement material selected from the group consisting of polymeric inorganic materials, nonpolymeric inorganic materials, polymeric organic materials, nonpolymeric organic materials, composites thereof, and combinations thereof; coatings and articles made therefrom and methods of making the same.Type: GrantFiled: December 14, 2006Date of Patent: November 18, 2014Assignee: PPG Industries Ohio, Inc.Inventors: Thomas G. Rukavina, Robert Hunia, Chia-Cheng Lin, Kaliappa G. Ragunathan, Vidhu J. Nagpal
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Patent number: 8846199Abstract: Organic-inorganic hybrid fibers and methods for the preparation of such fibers are disclosed.Type: GrantFiled: December 29, 2011Date of Patent: September 30, 2014Assignee: PPG Industries Ohio, Inc.Inventors: Stuart D. Hellring, Kaliappa G. Ragunathan, Kenneth J. Balog, Hong Li, Robert A. Montague
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Patent number: 8840962Abstract: 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: GrantFiled: May 14, 2010Date of Patent: September 23, 2014Assignee: PPG Industries Ohio, Inc.Inventors: Umesh C. Desai, Shanti Swarup, Kaliappa G. Ragunathan, Paul Pcolinsky
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Publication number: 20140150970Abstract: 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: ApplicationFiled: June 14, 2013Publication date: June 5, 2014Inventors: Umesh C. Desai, Tien-Chieh Chao, Masayuki Nakajima, Kaliappa G. Ragunathan
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Patent number: 8288000Abstract: Coating compositions are disclosed that include corrosion resisting particles such that the coating composition can exhibit corrosion resistance properties. Also disclosed are substrates at least partially coated with a coating deposited from such a composition and multi-component composite coatings, wherein at least one coating later is deposited from such a coating composition. Methods and apparatus for making ultrafine solid particles are also disclosed.Type: GrantFiled: August 13, 2007Date of Patent: October 16, 2012Assignee: PPG Industries Ohio, Inc.Inventors: Kaliappa G. Ragunathan, John R. Schneider
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Publication number: 20120129980Abstract: 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.Type: ApplicationFiled: December 9, 2011Publication date: May 24, 2012Applicant: PPG Industries Ohio, Inc.Inventors: Umesh C. Desai, Tien-Chieh Chao, Masayuki Nakajima, Kaliappa G. Ragunathan
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Publication number: 20120108750Abstract: Organic-inorganic hybrid fibers and methods for the preparation of such fibers are disclosed.Type: ApplicationFiled: December 29, 2011Publication date: May 3, 2012Applicant: PPG INDUSTRIES OHIO, INC.Inventors: Stuart D. Hellring, Kaliappa G. Ragunathan, Kenneth J. Balog, Hong Li, Robert A. Montague
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Patent number: 8168738Abstract: Disclosed are low temperature, moisture curable coating compositions, related coated substrates, and methods for coating a substrate. The coating compositions include an ungelled, secondary amine-containing Michael addition reaction product of reactants including a compound comprising more than one site of ethylenic unsaturation, and an aminofunctional silane.Type: GrantFiled: May 28, 2009Date of Patent: May 1, 2012Assignee: PPG Industries Ohio, Inc.Inventors: Ronald R. Ambrose, Anthony M. Chasser, Susan F. Donaldson, Ellen C. LaLumere, Kaliappa G. Ragunathan
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Patent number: 8088323Abstract: Organic-inorganic hybrid fibers and methods for the preparation of such fibers are disclosed.Type: GrantFiled: February 27, 2007Date of Patent: January 3, 2012Assignee: PPG Industries Ohio, Inc.Inventors: Stuart D. Hellring, Kaliappa G. Ragunathan, Kenneth J. Balog, Hong Li, Robert A. Montague
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Patent number: 8080287Abstract: Disclosed are low temperature curable coating compositions that include a polymer comprising functional groups reactive with anhydride groups and a crosslinking agent that includes the ungelled hydrosilylation reaction product of a silicon hydride and an unsaturated polycarboxylic acid anhydride. Also disclosed are related coated substrates and methods for coating a substrate.Type: GrantFiled: March 31, 2009Date of Patent: December 20, 2011Assignee: PPG Industries Ohio, IncInventors: Jonathan T. Martz, Kaliappa G. Ragunathan, Deborah E. Hayes, Patrick K. Keane
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Publication number: 20110281978Abstract: 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 inorganic 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: ApplicationFiled: May 14, 2010Publication date: November 17, 2011Inventors: Umesh C. Desai, Shanti Swarup, Kaliappa G. Ragunathan, Paul Pcolinsky
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Publication number: 20110037013Abstract: Coatings comprising a latex particle comprising the reaction product of itaconic acid/anhydride and a monoalcohol, a monoepoxide, a monoamine or mixtures thereof are disclosed. Methods for using such coatings, particularly for inhibiting sound and/or vibration transmission through a substrate, are also disclosed.Type: ApplicationFiled: August 14, 2009Publication date: February 17, 2011Applicant: PPG Industries Ohio, Inc.Inventors: Kaliappa G. Ragunathan, David R. Fenn, Umesh C. Desai, Gregory J. McCollum, Anthony Palermo
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Patent number: 7811670Abstract: Coating compositions are disclosed that include corrosion resisting particles such that the coating composition can exhibit corrosion resistance properties. Also disclosed are substrates at least partially coated with a coating deposited from such a composition and multi-component composite coatings, wherein at least one coating later is deposited from such a coating composition. Methods and apparatus for making ultrafine solid particles are also disclosed.Type: GrantFiled: August 13, 2007Date of Patent: October 12, 2010Assignee: PPG Industries Ohio, Inc.Inventors: Kaliappa G. Ragunathan, John R. Schneider