Patents by Inventor Hari Babu Sunkara
Hari Babu Sunkara 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: 20150051326Abstract: Plasticizers comprising monoesters and/or diesters of poly(trimethylene ether)glycol are provided. The plasticizers can be used in plasticizing a variety of base polymers.Type: ApplicationFiled: August 13, 2013Publication date: February 19, 2015Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: HARI BABU SUNKARA, Raja Hari Poladi, Herbert Vernon Bendler
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Patent number: 8946485Abstract: Disclosed is branched poly(trimethylene ether) polyols prepared from the acid catalyzed polycondensation reaction of 1,3-propanediol, and at least one triol comonomer selected from 1,1,1-tris(hydroxymethyl)ethane and 1,1,1-tris(hydroxymethyl)propane. Also disclosed is a branched poly(trimethylene ether) polyol with an equivalent hydroxyl functionality of about 2.1 to about 3.2 and a Mn of about 200 to about 6000. The polyols are useful in the preparation of polyurethane rigid and flexible foams.Type: GrantFiled: August 29, 2011Date of Patent: February 3, 2015Assignee: E I du Pont de Nemours and CompanyInventors: Gyorgyi Fenyvesi, Raja Hari Poladi, Hari Babu Sunkara
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Publication number: 20140356631Abstract: A coating composition having excellent adhesion between coating layers is provided. This disclosure is particularly directed to a 1K waterborne coating composition having hydrophobic polytrimethylene ether polyol containing crosslinkable functional hydroxyl groups. The 1K waterborne coating composition can be used in a multi-layer coating that can comprise a primer layer, a basecoat layer, and optionally, a clearcoat layer. The 1K waterborne coating composition of this disclosure can provide improved adhesion between coating layers, such as between a primer layer and a basecoat layer, between two or more basecoat layers, or between a basecoat layer and a clearcoat layer. This disclosure is further directed to a coating composition comprising components derived from renewable resources.Type: ApplicationFiled: December 12, 2012Publication date: December 4, 2014Inventors: Ayumu Yokoyama, Hari Babu Sunkara, Rajesh Gopalan Saliya
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Patent number: 8884073Abstract: Provided are processes for preparing low molecular weight polytrimethylene ether glycol by acid catalyzed polycondensation, neutralization, removal of unreacted monomer, and contact with filter aid. The processes can avoid hydrolysis and yet provide product substantially free of catalyst derived end groups.Type: GrantFiled: April 23, 2012Date of Patent: November 11, 2014Assignee: E I du Pont de Nemours and CompanyInventors: Edward Budi Muliawan, Raja Hari Poladi, Hari Babu Sunkara
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Publication number: 20140259884Abstract: The present invention is directed toward compositions suitable for use as dielectric fluids, lubricant fluids and biodiesel fluids. Compositions described herein are obtained from a saturated, unsaturated or combinations of both monol, diol, triol or polyol acyl ester based fluid and/or a non-ester based fluid and 2,4,6-tris(di-C1-C6-alkylaminomethyl) phenol and/or the carboxylic acid salt of 2,4,6-tris(di-C1-C6-alkylaminomethyl) phenol. These compositions demonstrate improved oxidative stability and/or hydrolytic stability at higher use temperatures.Type: ApplicationFiled: March 11, 2014Publication date: September 18, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: HARI BABU SUNKARA, Raja Hari Poladi
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Publication number: 20140274846Abstract: The present invention is directed toward compositions suitable for use as dielectric fluids, lubricant fluids and biodiesel fluids. Compositions described herein are obtained from a saturated, unsaturated or combinations of both monol, diol, triol or polyol acyl ester based fluid and/or a non-ester based fluid and 2,4,6-tris(di-C1-C6-alkylaminomethyl)phenol and/or the carboxylic acid salt of 2,4,6-tris(di-C1-C6-alkylaminomethyl)phenol. These compositions demonstrate improved oxidative stability and/or hydrolytic stability at higher use temperatures.Type: ApplicationFiled: March 11, 2014Publication date: September 18, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: HARI BABU SUNKARA, Raja Hari Poladi
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Publication number: 20140274824Abstract: The present invention is directed toward compositions suitable for use as dielectric fluids, lubricant fluids and biodiesel fluids. Compositions described herein are obtained from a saturated, unsaturated or combinations of both monol, diol, triol or polyol acyl ester based fluid and/or a non-ester based fluid and 2,4,6-tris(di-C1-C6-alkylaminomethyl) phenol and/or the carboxylic acid salt of 2,4,6-tris(di-C1-C6-alkylaminomethyl) phenol. These compositions demonstrate improved oxidative stability and/or hydrolytic stability at higher use temperatures.Type: ApplicationFiled: March 11, 2014Publication date: September 18, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: Hari Babu SUNKARA, Raja Hari Poladi
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Publication number: 20140264199Abstract: The present invention is directed toward compositions suitable for use as dielectric fluids, lubricant fluids and biodiesel fluids. Compositions described herein are obtained from a saturated, unsaturated or combinations of both monol, diol, triol or polyol acyl ester based fluid and/or a non-ester based fluid and 2,4,6-tris(di-C1-C6-alkylaminomethyl)phenol and/or the carboxylic acid salt of 2,4,6-tris(di-C1-C6-alkylaminomethyl)phenol. These compositions demonstrate improved oxidative stability and/or hydrolytic stability at higher use temperatures.Type: ApplicationFiled: March 11, 2014Publication date: September 18, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: Hari Babu Sunkara, Raja Hari Poladi
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Patent number: 8829076Abstract: The present disclosure is directed to a thermoset composition comprising a low molecular weight polytrimethylene ether glycol. This disclosure is further directed to an antimicrobial coating composition, an antimicrobial coating layer, an antimicrobial adhesive, or an antimicrobial sealant formed from the thermoset composition comprising the low molecular weight polytrimethylene ether glycol. The thermoset compositions can be used as interior and exterior top coats, basecoats, primers, primer surfacers, primer fillers, adhesives or sealants. The disclosure is particularly directed to a thermoset composition comprising components derived from renewable resources.Type: GrantFiled: November 1, 2011Date of Patent: September 9, 2014Assignee: Axalta Coating Systems IP Co., LLCInventors: Ayumu Yokoyama, Hari Babu Sunkara, Rajesh Gopalan Saliya
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Patent number: 8759559Abstract: Provided are processes for preparing polytrimethylene ether glycol monoester or diesters composition wherein polytrimethylene ether glycol containing less than about 1 weight % of unreacted diol monomer is reacted with an equivalent excess of a monocarboxylic acid.Type: GrantFiled: April 18, 2012Date of Patent: June 24, 2014Assignee: E I du Pont de Nemours and CompanyInventors: Hari Babu Sunkara, Sam Cotterill
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Patent number: 8758660Abstract: A bicomponent fiber wherein (a) the first component comprises from about 90 to 100 wt. % poly(trimethylene terephthalate) and (b) the second component is a polymer composition comprising (i) poly(trimethylene terephthalate) and (ii) polymer containing polyalkylene ether repeating units. Yarn, fiber, fabrics and carpets comprising the bicomponent fiber, as well as the process of making the bicomponent fiber, yarn, fabric, and carpet.Type: GrantFiled: February 21, 2008Date of Patent: June 24, 2014Assignee: E I du Pont de Nemours and CompanyInventors: Joseph V. Kurian, Gyorgyi Fenyvesi, Hari Babu Sunkara
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Patent number: 8759565Abstract: Disclosed are processes to prepare monocarboxylic acid esters (mono- and/or diesters) of polytrimethylene ether glycol that are substantially free of residues from the catalyst used to produce the polytrimethylene ether glycol esters, as well as methods for their preparation and end uses thereof. The esters, such as the bis-2-ethylhexanoate esters, have uses as functional fluids.Type: GrantFiled: June 23, 2010Date of Patent: June 24, 2014Assignee: E I du Pont de Nemours and CompanyInventors: Hari Babu Sunkara, Raja Hari Poladi, Gyorgyi Fenyvesi
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Publication number: 20140131636Abstract: In the present invention, compositions that are suitable for use as dielectric fluids are obtained from renewably sourced oils, and blends thereof. Renewably sourced synthetic esters as described herein are prepared using components obtained from natural or biologic feedstocks, wherein the feedstocks can be regenerated via conventional farming techniques. Dielectric fluids that can meet the industry standards are obtained using a process of combining appropriate percentages of components selected from synthetic polyol esters, natural oils, and mineral oil to customize the properties of the dielectric fluid obtained. Some of the properties that can be manipulated in the practice of the present invention include: electrical strength, resistivity, impulse strength, dissipation factor, permittivity, specific heat, thermal conductivity, chemical stability, gas absorption, pour point, viscosity, volatility, flash and fire point, and biodegradability.Type: ApplicationFiled: November 12, 2013Publication date: May 15, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: HARI BABU SUNKARA, WEIMING QIU
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Publication number: 20140131634Abstract: In the present invention, compositions that are suitable for use as dielectric fluids are obtained from renewably sourced oils, and blends thereof. Renewably sourced synthetic esters as described herein are prepared using components obtained from natural or biologic feedstocks, wherein the feedstocks can be regenerated via conventional farming techniques. Dielectric fluids that can meet the industry standards are obtained using a process of combining appropriate percentages of components selected from synthetic polyol esters, natural oils, and mineral oil to customize the properties of the dielectric fluid obtained. Some of the properties that can be manipulated in the practice of the present invention include: electrical strength, resistivity, impulse strength, dissipation factor, permittivity, specific heat, thermal conductivity, chemical stability, gas absorption, pour point, viscosity, volatility, flash and fire point, and biodegradability.Type: ApplicationFiled: November 12, 2013Publication date: May 15, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: HARI BABU SUNKARA, WEIMING QIU
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Publication number: 20140131642Abstract: In the present invention, compositions that are suitable for use as dielectric fluids are obtained from renewably sourced oils, and blends thereof. Renewably sourced synthetic esters as described herein are prepared using components obtained from natural or biologic feedstocks, wherein the feedstocks can be regenerated via conventional farming techniques. Dielectric fluids that can meet the industry standards are obtained using a process of combining appropriate percentages of components selected from synthetic polyol esters, natural oils, and mineral oil to customize the properties of the dielectric fluid obtained. Some of the properties that can be manipulated in the practice of the present invention include: electrical strength, resistivity, impulse strength, dissipation factor, permittivity, specific heat, thermal conductivity, chemical stability, gas absorption, pour point, viscosity, volatility, flash and fire point, and biodegradability.Type: ApplicationFiled: November 12, 2013Publication date: May 15, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: HARI BABU SUNKARA, WEIMING QIU
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Publication number: 20140135522Abstract: In the present invention, compositions that are suitable for use as dielectric fluids are obtained from renewably sourced oils, and blends thereof. Renewably sourced synthetic esters as described herein are prepared using components obtained from natural or biologic feedstocks, wherein the feedstocks can be regenerated via conventional farming techniques. Dielectric fluids that can meet the industry standards are obtained using a process of combining appropriate percentages of components selected from synthetic polyol esters, natural oils, and mineral oil to customize the properties of the dielectric fluid obtained. Some of the properties that can be manipulated in the practice of the present invention include: electrical strength, resistivity, impulse strength, dissipation factor, permittivity, specific heat, thermal conductivity, chemical stability, gas absorption, pour point, viscosity, volatility, flash and fire point, and biodegradability.Type: ApplicationFiled: November 12, 2013Publication date: May 15, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: HARI BABU SUNKARA, WEIMING QIU, SAM COTTERILL, ERIK KELLER
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Publication number: 20140131640Abstract: In the present invention, compositions that are suitable for use as dielectric fluids are obtained from renewably sourced oils, and blends thereof. Renewably sourced synthetic esters as described herein are prepared using components obtained from natural or biologic feedstocks, wherein the feedstocks can be regenerated via conventional farming techniques. Dielectric fluids that can meet the industry standards are obtained using a process of combining appropriate percentages of components selected from synthetic polyol esters, natural oils, and mineral oil to customize the properties of the dielectric fluid obtained. Some of the properties that can be manipulated in the practice of the present invention include: electrical strength, resistivity, impulse strength, dissipation factor, permittivity, specific heat, thermal conductivity, chemical stability, gas absorption, pour point, viscosity, volatility, flash and fire point, and biodegradability.Type: ApplicationFiled: November 12, 2013Publication date: May 15, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: HARI BABU SUNKARA, WEIMING QIU
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Publication number: 20140131639Abstract: In the present invention, compositions that are suitable for use as dielectric fluids are obtained from renewably sourced oils, and blends thereof. Renewably sourced synthetic esters as described herein are prepared using components obtained from natural or biologic feedstocks, wherein the feedstocks can be regenerated via conventional farming techniques. Dielectric fluids that can meet the industry standards are obtained using a process of combining appropriate percentages of components selected from synthetic polyol esters, natural oils, and mineral oil to customize the properties of the dielectric fluid obtained. Some of the properties that can be manipulated in the practice of the present invention include: electrical strength, resistivity, impulse strength, dissipation factor, permittivity, specific heat, thermal conductivity, chemical stability, gas absorption, pour point, viscosity, volatility, flash and fire point, and biodegradability.Type: ApplicationFiled: November 12, 2013Publication date: May 15, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: HARI BABU SUNKARA, WEIMING QIU
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Publication number: 20140131637Abstract: In the present invention, compositions that are suitable for use as dielectric fluids are obtained from renewably sourced oils, and blends thereof. Renewably sourced synthetic esters as described herein are prepared using components obtained from natural or biologic feedstocks, wherein the feedstocks can be regenerated via conventional farming techniques. Dielectric fluids that can meet the industry standards are obtained using a process of combining appropriate percentages of components selected from synthetic polyol esters, natural oils, and mineral oil to customize the properties of the dielectric fluid obtained. Some of the properties that can be manipulated in the practice of the present invention include: electrical strength, resistivity, impulse strength, dissipation factor, permittivity, specific heat, thermal conductivity, chemical stability, gas absorption, pour point, viscosity, volatility, flash and fire point, and biodegradability.Type: ApplicationFiled: November 12, 2013Publication date: May 15, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: HARI BABU SUNKARA, WEIMING QIU
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Publication number: 20140131641Abstract: In the present invention, compositions that are suitable for use as dielectric fluids are obtained from renewably sourced oils, and blends thereof. Renewably sourced synthetic esters as described herein are prepared using components obtained from natural or biologic feedstocks, wherein the feedstocks can be regenerated via conventional farming techniques. Dielectric fluids that can meet the industry standards are obtained using a process of combining appropriate percentages of components selected from synthetic polyol esters, natural oils, and mineral oil to customize the properties of the dielectric fluid obtained. Some of the properties that can be manipulated in the practice of the present invention include: electrical strength, resistivity, impulse strength, dissipation factor, permittivity, specific heat, thermal conductivity, chemical stability, gas absorption, pour point, viscosity, volatility, flash and fire point, and biodegradability.Type: ApplicationFiled: November 12, 2013Publication date: May 15, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: HARI BABU SUNKARA, WEIMING QIU