Patents by Inventor Gobinda Saha
Gobinda Saha 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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Publication number: 20240034827Abstract: A film-forming thermoset coating composition includes: an aqueous medium; and Option 1 and/or Option 2 as follows: Option 1: a compound, such as an oligomeric or polymeric compound, including a plurality of alpha effect based nucleophile functional groups and/or linkages; and a component reactive with at least one of the alpha effect based nucleophile functional groups and/or linkages; Option 2: a compound, such as an oligomeric or polymeric compound including a plurality of n-methylolated alpha effect based nucleophile functional groups and/or linkages. The plurality of alpha effect based nucleophile functional groups and/or linkages include a semi-carbazide functional group and/or linkage, a carbazate functional group and/or linkage, an oxime functional group, an aminoxy functional group and/or linkage, or combinations thereof.Type: ApplicationFiled: December 10, 2021Publication date: February 1, 2024Applicant: PPG Industries Ohio, Inc.Inventors: Jonathan Garrett Weis, Allison Brooks Domhoff, Hongying Zhou, Scott William Sisco, Paul Hubert Lamers, Dennis Leroy Faler, Tsukasa Mizuhara, Gobinda Saha
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Publication number: 20230365764Abstract: A method of pyrolysis of Kraft lignin is disclosed, including the steps of providing a microwave generator system, providing a Kraft lignin feedstock in the system, providing a biochar in the system as a microwave receptor, providing nitrogen atmosphere in the system, and heating the feedstock and receptor using microwave energy to make a biooil. A biooil made using the above method is also disclosed as is a biooil having a high phenolic content, in the range of 86.6% to 97.9%.Type: ApplicationFiled: November 26, 2021Publication date: November 16, 2023Applicant: The University of New BrunswickInventors: Gobinda Saha, Disha Bisto, Muhammed Afzal
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Publication number: 20230212435Abstract: Disclosed is a composition comprising a molecule comprising an electrophilic functional group, optionally a second molecule comprising a nucleophilic functional group, and a thermally conductive filler package. The filler package may comprise thermally conductive, electrically insulative filler particles that may have a thermal conductivity of at least 5 W/m·K (measured according to ASTM D7984) and a volume resistivity of at least 10 ?·m (measured according to ASTM D257, C611, or B193) and that may be present in an amount of at least 50% by volume based on total volume of the filler package. The thermally conductive filler package may be present in an amount of at least 10% by volume percent based on total volume of the composition. The present invention also is directed to a method for treating a substrate and to substrates comprising a layer formed from a compositions disclosed herein.Type: ApplicationFiled: April 14, 2021Publication date: July 6, 2023Applicant: PPG Industries Ohio, Inc.Inventors: Liang Ma, Allison G. Condie, Marvin M. Pollum, Jr., Maria S. French, Lorraine Hsu, Shuyu Fang, Hong Li, Calum H. Munro, Cynthia Kutchko, Eric S. Epstein, Gobinda Saha
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Patent number: 11673995Abstract: A polyol polymer is obtained from reactants including: a) a non-aromatic epoxy functional compound that includes at least 30 weight % of the total solids weight of the reactants; and b) an aromatic mono-carboxylic acid functional compound, or anhydride thereof, that is substantially free of non-aromatic ethylenic unsaturation. The polyol polymer has ester linkages and hydroxyl functional groups. Further, if the reactants further include an aromatic polycarboxylic acid, the aromatic polycarboxylic acid makes up less than 15 weight % of the total solids weight of the reactants. A coating composition is also prepared with the polyol polymer.Type: GrantFiled: August 8, 2019Date of Patent: June 13, 2023Assignee: PPG Industries Ohio, Inc.Inventors: Jonathan P. Breon, Hongying Zhou, Tsukasa Mizuhara, Paul H. Lamers, Gobinda Saha
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Publication number: 20230033514Abstract: A film-forming thermoset coating composition includes: (a) an aqueous medium; and Option 1 and/or Option 2 as follows: Option 1: (b1) polyurethane-acrylate core-shell particles including a polymeric acrylic core at least partially encapsulated by a polymeric shell including urethane linkages, where the polymeric shell includes an acid functional group and two or more hydrazide functional groups, where the polymeric shell is covalently bonded to at least a portion of the polymeric core; and (c1) (i) formaldehyde; (ii) polyformaldehyde; and/or (iii) a compound that generates formaldehyde; Option 2: (b2) polyurethane-acrylate core-shell particles including a polymeric acrylic core at least partially encapsulated by a polymeric shell including urethane linkages, where the polymeric shell includes an acid functional group and two or more N-methylolated hydrazide functional groups, where the polymeric shell is covalently bonded to at least a portion of the polymeric core.Type: ApplicationFiled: December 10, 2020Publication date: February 2, 2023Applicant: PPG Industries Ohio, Inc.Inventors: Wei Wang, Dennis Leroy Faler, Sara Ashley Friello, Paul H. Lamers, Steven Edward Bowles, David Robert Fenn, Chester Szymanski, Shanti Swarup, Hongying Zhou, Hilary Ann Kerchner, Gobinda Saha, Brian Endlich
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Publication number: 20220306800Abstract: A polyol polymer is obtained from reactants including: a) a non-aromatic epoxy functional compound that includes at least 30 weight % of the total solids weight of the reactants; and b) an aromatic mono-carboxylic acid functional compound, or anhydride thereof, that is substantially free of non-aromatic ethyl enic unsaturation. The polyol polymer has ester linkages and hydroxyl functional groups, Further, if the reactants further include an aromatic polycarboxylic acid, the aromatic polycarboxylic acid makes up less than 15 weight % of the total solids weight of the reactants. A coating composition is also prepared with the polyol polymer.Type: ApplicationFiled: August 7, 2020Publication date: September 29, 2022Applicant: PPG Industries Ohio, Inc.Inventors: Jonathan P. Breon, Hongying Zhou, Tsukasa Mizuhara, Paul H. Lamers, Gobinda Saha
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Patent number: 11130912Abstract: The present invention relates to polymers that include residues of at least one monomer represented by the following Formula (I). With reference to Formula (I), at least one of E1 and E2 independently is, or is independently substituted with, at least one reactive group, such as a (meth)acryloyl group. Monomers represented by Formula (I) and monomer residues thereof have alignment properties, such as photoalignment properties. The present invention also relates to alignment layers that include such polymers, and articles of manufacture, such as optical elements, that include one or more such alignment layers.Type: GrantFiled: June 12, 2015Date of Patent: September 28, 2021Assignee: Transitions Optical, Inc.Inventors: Anil Kumar, Meng He, Ryan Stayshich, Gobinda Saha
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Publication number: 20210238441Abstract: A lipophilic/hydrophilic polymer is prepared from a mixture of reactants that includes a polymerizable ethylenically unsaturated alkoxysilane, a polymerizable ethylenically unsaturated hydrophilic monomer, and a polymerizable ethylenically unsaturated lipophilic monomer. The lipophilic/hydrophilic polymer includes at least a pendant and/or terminal alkoxysilane group. An anti-fingerprint coating composition includes the lipophilic/hydrophilic polymer.Type: ApplicationFiled: April 26, 2021Publication date: August 5, 2021Inventors: Kurt G. Olson, Renlong Gao, Steven V. Barancyk, Courtney Balliet, Steven Bowles, Gobinda Saha, Irina G. Schwendeman
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Publication number: 20210163784Abstract: A silicone-containing polyester polyol can include a reaction product prepared from reactants including: a diol; a polyol having at least three hydroxyl groups; a dimer of a fatty acid having two carboxylic acid groups, or an anhydride or ester thereof; and a silicone component having siloxane linkages and at least two reactive functional groups selected from hydroxyl groups, amino groups, thiol groups, carboxylic acid groups, anhydride groups, or combinations thereof. A coating composition for preparing an anti-fingerprinting, soft touch coating can include the silicone-containing polyester polyol and a crosslinker reactive with the silicone-containing polyester polyol.Type: ApplicationFiled: February 12, 2021Publication date: June 3, 2021Inventors: Alicia M. Phelps, Shawn A. DeSaw, Gobinda Saha, Gereme T. Hensel, Irina G. Schwendeman
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Patent number: 10920103Abstract: A silicone-containing polyester polyol can include a reaction product prepared from reactants including: a diol; a polyol having at least three hydroxyl groups; a dimer of a fatty acid having two carboxylic acid groups, or an anhydride or ester thereof; and a silicone component having siloxane linkages and at least two reactive functional groups selected from hydroxyl groups, amino groups, thiol groups, carboxylic acid groups, anhydride groups, or combinations thereof. A coating composition for preparing an anti-fingerprinting, soft touch coating can include the silicone-containing polyester polyol and a crosslinker reactive with the silicone-containing polyester polyol.Type: GrantFiled: December 4, 2017Date of Patent: February 16, 2021Assignee: PPG Industries Ohio, Inc.Inventors: Alicia Marie Phelps, Shawn Allen DeSaw, Gobinda Saha, Gereme Thomas Hensel, Irina G. Schwendeman
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Publication number: 20210040262Abstract: A polyol polymer is obtained from reactants including: a) a non-aromatic epoxy functional compound that includes at least 30 weight % of the total solids weight of the reactants; and b) an aromatic mono-carboxylic acid functional compound, or anhydride thereof, that is substantially free of non-aromatic ethylenic unsaturation. The polyol polymer has ester linkages and hydroxyl functional groups. Further, if the reactants further include an aromatic polycarboxylic acid, the aromatic polycarboxylic acid makes up less than 15 weight % of the total solids weight of the reactants. A coating composition is also prepared with the polyol polymer.Type: ApplicationFiled: August 8, 2019Publication date: February 11, 2021Inventors: Jonathan P. Breon, Hongying Zhou, Tsukasa Mizuhara, Paul H. Lamers, Gobinda Saha
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Patent number: 10875833Abstract: The present invention relates to compounds represented by the following Formula (I). With reference to Formula (I), at least one of E1 and E2 independently is, or is independently substituted with, at least one reactive group, such as a (meth)acryloyl group. The compounds of the present invention can be used alone and/or in combination with polymers prepared from such compounds, such as to form or as one or more components of an alignment layer.Type: GrantFiled: June 12, 2015Date of Patent: December 29, 2020Assignee: Transitions Optical, Inc.Inventors: Anil Kumar, Ryan Stayshich, Meng He, Gobinda Saha
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Publication number: 20200139304Abstract: Transitional metal oxide-coated mesoporous microstructures, uses therefor, and processes for making same are provided. The transitional metal oxide-coated mesoporous microstructures can be silica based, including MCM-41, MCM-45, MCM-48, SBA-15 and SBA-16. The microstructures can include microspheres. The mesoporous microstructures can be produced using a sol-gel process wherein the crystallization step in the sol-gel process is carried out at a low temperature, where the temperature can be 22° C. for example. The metal oxide can be titanium dioxide. The titanium dioxide can include titanium dioxide nanocrystals. The transitional metal oxide-coated mesoporous microstructures can be used in environmental applications, such as nanofiltration of contaminated water to remove pollutants.Type: ApplicationFiled: June 18, 2019Publication date: May 7, 2020Inventors: Gobinda Saha, Balaji SUBRAMANIAN, Brian MACLEAN, Ogbogu Kalu
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Patent number: 10590220Abstract: The present disclosure provides for new photoalignment (co)polymer materials which demonstrate improved adhesion to a substrate. The (co)polymeric structure includes at least one photochemically active chromophore and at least one adhesion promoter group. Articles of manufacture, optical elements, ophthalmic elements and liquid crystal cells which include at least one photoalignment layer made from the photoalignment (co)polymer materials and methods for formation are also disclosed.Type: GrantFiled: October 21, 2016Date of Patent: March 17, 2020Assignee: Transitions Optical, Inc.Inventors: Gobinda Saha, Anil Kumar
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Patent number: 10508216Abstract: A stain resistant coating composition can include: (a) a polyester polyol; (b) a silicone component having at least one reactive functional group; and (c) a crosslinker reactive with (a) and (b). The polyester polyol can include a reaction product obtained from a mixture of reactants including: an aliphatic diol; a polyol having 3 or more hydroxyl groups; and an aliphatic cyclic polycarboxylic acid, or an anhydride or ester thereof, that is greater than 10 mole % of the total carboxylic acids, or anhydrides or esters thereof, used to prepare the polyester.Type: GrantFiled: June 9, 2016Date of Patent: December 17, 2019Assignee: PPG Industries Ohio, Inc.Inventors: Gereme Thomas Hensel, Renlong Gao, Irina G. Schwendeman, Gobinda Saha, Courtney Richman
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Patent number: 10487232Abstract: A stain resistant, soft touch coating composition can include: (a) a fluoropolymer comprising at least one reactive functional group; (b) a polyester polyol; and (c) a crosslinker reactive with (a) and (b). The polyester polyol can include a reaction product obtained from a mixture of reactants including: an aliphatic diol; a polyol having 3 or more hydroxyl groups; and a cyclic polycarboxylic acid, or an anhydride or ester thereof.Type: GrantFiled: June 9, 2016Date of Patent: November 26, 2019Assignee: PPG Industries Ohio, Inc.Inventors: Gereme Thomas Hensel, Renlong Gao, Irina G. Schwendeman, Gobinda Saha, Jiping Shao, Courtney Richman
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Publication number: 20190316002Abstract: A silicone-containing polyester polyol can include a reaction product prepared from reactants including: a diol; a polyol having at least three hydroxyl groups; a dimer of a fatty acid having two carboxylic acid groups, or an anhydride or ester thereof; and a silicone component having siloxane linkages and at least two reactive functional groups selected from hydroxyl groups, amino groups, thiol groups, carboxylic acid groups, anhydride groups, or combinations thereof. A coating composition for preparing an anti-fingerprinting, soft touch coating can include the silicone-containing polyester polyol and a crosslinker reactive with the silicone-containing polyester polyol.Type: ApplicationFiled: December 4, 2017Publication date: October 17, 2019Applicant: PPG Industries Ohio, Inc.Inventors: Alicia Marie Phelps, Shawn Allen DeSaw, Gobinda Saha, Gereme Thomas Hensel, Irina G. Schwendeman
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Publication number: 20180305579Abstract: A stain resistant coating composition can include: (a) a polyester polyol; (b) a silicone component having at least one reactive functional group; and (c) a crosslinker reactive with (a) and (b). The polyester polyol can include a reaction product obtained from a mixture of reactants including: an aliphatic diol; a polyol having 3 or more hydroxyl groups; and an aliphatic cyclic polycarboxylic acid, or an anhydride or ester thereof; that is greater than 10 mole % of the total carboxylic acids, or anhydrides or esters thereof, used to prepare the polyester.Type: ApplicationFiled: June 9, 2016Publication date: October 25, 2018Inventors: Gereme Thomas Hensel, Renlong Gao, Irina G. Schwendeman, Gobinda Saha, Courtney Richman
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Publication number: 20180171154Abstract: Coated articles demonstrating anti-reflective properties are provided. Exemplary coated articles comprise a substrate and an anti-reflective coating layer applied to at least one surface of the substrate. The anti-reflective coating layer is formed from an acidic sol-gel composition comprising: (a) tetraalkoxysilane; (b) alkyl trialkoxysilane; (c) a silane-functional acrylic polymer; (d) inorganic oxide particles; (e) a mineral acid; (f) water; and (g) a solvent. The coated article optionally further comprises an outermost anti-fouling coating layer applied to at least one surface of the anti-reflective coating layer.Type: ApplicationFiled: December 20, 2016Publication date: June 21, 2018Applicant: PPG INDUSTRIES OHIO, INC.Inventors: Songwei LU, Jiping SHAO, John D. BASIL, Gobinda SAHA, Irina SCHWENDEMAN
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Publication number: 20180163072Abstract: A stain resistant, soft touch coating composition can include: (a) a fluoropolymer comprising at least one reactive functional group; (b) a polyester polyol; and (c) a crosslinker reactive with (a) and (b). The polyester polyol can include a reaction product obtained from a mixture of reactants including: an aliphatic diol; a polyol having 3 or more hydroxyl groups; and a cyclic polycarboxylic acid, or an anhydride or ester thereof.Type: ApplicationFiled: June 9, 2016Publication date: June 14, 2018Inventors: Gereme Thomas Hensel, Renlong Gao, Irina G. Schwendeman, Gobinda Saha, Jiping Shao, Courtney Richman