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).

  • Publication number: 20200017634
    Abstract: A process is disclosed herein comprising the steps: a) contacting a mixture comprising furandicarboxylic acid dialkyl ester, 1,3-propanediol, a zinc compound, and optionally a poly(alkylene ether) diol, at a temperature in the range of from about 120° C. to about 220° C. to form prepolymer, wherein the mole ratio of the furandicarboxylic acid dialkyl ester to the 1,3-propanediol is in the range of from 1:1.3 to 1:2.2; and b) heating the prepolymer under reduced pressure to a temperature in the range of from about 220° C. to about 260° C. to form polymer. The mixture of step a) can further comprise an anthraquinone compound.
    Type: Application
    Filed: February 23, 2018
    Publication date: January 16, 2020
    Inventors: Hari Babu Sunkara, Raja Hari Poladi
  • Publication number: 20200002471
    Abstract: A process to prepare poly(alkylene furandicarboxylate) polymer is disclosed herein. In one embodiment, the process comprises a) contacting a mixture comprising furandicarboxylic acid dialkyl ester, a diol comprising ethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,4-cyclohexanedimethanol, or mixtures thereof, and a metal catalyst at a temperature in the range of from about 140° C. to about 220° C. to form prepolymer, wherein the mole ratio of the furandicarboxylic acid dialkyl ester to the diol is in the range of from 1:1.3 to 1:2.2; b) performing polycondensation by heating the prepolymer under reduced pressure to a temperature in the range of from about 220° C. to about 260° C.
    Type: Application
    Filed: February 23, 2018
    Publication date: January 2, 2020
    Inventors: Hari Babu Sunkara, Paul J. Pigliacampi
  • Publication number: 20190233615
    Abstract: Plasticized compositions comprising polyamide or polyamide/ionomer blend and poly(trimethylene ether) glycol are provided. Also articles prepared from these compositions are provided.
    Type: Application
    Filed: April 4, 2019
    Publication date: August 1, 2019
    Inventors: HERBERT VERNON BENDLER, HARI BABU SUNKARA
  • Publication number: 20180273755
    Abstract: Disclosed herein are lignin-furfuryl alcohol compositions, lignin-furfuryl alcohol-resole (LFR) compositions comprising lignin-furfuryl alcohol composition and phenolic resoles and LFR foams derived from such LFR compositions. Disclosed herein are LFR foams comprising a polymeric phase defining a plurality of open cells and a plurality of closed cells, and a gas phase comprising one or more blowing agents disposed in at least a portion of the plurality of closed cells, wherein the polymeric phase is derived from LFR compositions.
    Type: Application
    Filed: November 10, 2015
    Publication date: September 27, 2018
    Inventors: Michael W. Cobb, Hari Babu Sunkara, Sharlene Renee Williams
  • Patent number: 9718968
    Abstract: 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: Grant
    Filed: December 12, 2012
    Date of Patent: August 1, 2017
    Assignee: AXALTA COATING SYSTEMS IP CO., LLC
    Inventors: Ayumu Yokoyama, Hari Babu Sunkara, Rajesh Gopalan Saliya
  • Publication number: 20160347929
    Abstract: Plasticized compositions comprising polyamide or polyamide/ionomer blend and poly(trimethylene ether) glycol are provided. Also articles prepared from these compositions are provided.
    Type: Application
    Filed: February 19, 2015
    Publication date: December 1, 2016
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Herbert Vernon Bendler, Hari Babu Sunkara
  • Patent number: 9410010
    Abstract: The present invention relates to urea-terminated polyurethanes dispersants based on diols and polyether diols, aqueous dispersions of such polyurethanes, the manufacture of the urea terminated polyurethane dispersions and inks containing pigments and/or disperse dyes dispersed with these urea terminated polyurethane dispersants. The urea termination can have nonionic hydrophilic substituents.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: August 9, 2016
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: C. Chad Roberts, Patrick F. McIntyre, Michael Stephen Wolfe, Xiaoqing Li, Hari Babu Sunkara
  • Patent number: 9273259
    Abstract: 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: Grant
    Filed: March 11, 2014
    Date of Patent: March 1, 2016
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Hari Babu Sunkara, Raja Hari Poladi
  • Publication number: 20150182446
    Abstract: Provided are methods for extracting flavor and fragrance materials from natural plant materials, using poly(trimethylene ether) glycol homopolymers and copolymers. The poly(trimethylene ether) glycol homopolymers and copolymers act as solubilizers for essential oils, and can be used to provide compositions having a variety of uses in applications such as cosmetics, personal care products, and industrial cleaning products.
    Type: Application
    Filed: March 10, 2015
    Publication date: July 2, 2015
    Inventors: GYORGYI FENYVESI, RAJA HARI POLADI, HARI BABU SUNKARA
  • Patent number: 9018263
    Abstract: Disclosed are antimicrobial compositions, and methods for killing, inhibiting, or preventing the growth of microbes, using trimethylene glycol oligomers or dimers. The trimethylene glycol oligomers and dimers have the formula R(CH2CH2CH2—O—CH2CH2CH2)nR1 where R and R1 are hydroxyl, amine, or ester functionalitiess, and n is 2 or higher. The antimicrobial compositions are useful in personal care and cosmetic compositions.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: April 28, 2015
    Assignee: E I du Pont de Nemours and Company
    Inventors: Gyorgyi Fenyvesi, Hari Babu Sunkara
  • Publication number: 20150072152
    Abstract: A coating composition comprises high oleic oil, wherein the high oleic oil comprises C18:1 fatty acids in a range of from about 60% to 100% of the fatty acid moieties in the high oleic oil and a combination of C18:2 and C18:3 fatty acids in a range of from 0% to about 10% of the fatty acid moieties in the high oleic oil, percentage based on the total fatty acid moieties in the high oleic oil. The disclosure is further directed to a coating composition comprising the high oleic oil produced from bio-resources, such as soybeans. The coating composition can have low VOC (volatile organic compounds) and can produce a coating layer having good hardness, better appearance and improved adhesion. The coating composition can be used for coating vehicles, appliances, machinery, tools, or other industrial or consumer articles.
    Type: Application
    Filed: January 29, 2013
    Publication date: March 12, 2015
    Applicant: AXALTA COATING SYSTEMS IP CO., LLC
    Inventors: Ayumu Yokoyama, Hari Babu Sunkara, Rajesh Gopalan Saliya, Ross Sydney Morgan, Kenneth A. McDiarmid
  • Publication number: 20150051329
    Abstract: Plasticized compositions comprising polyamide or polyamide/ionomer blend and poly(trimethylene ether glycol) ester are provided. Also articles prepared from these compositions are provided.
    Type: Application
    Filed: February 24, 2014
    Publication date: February 19, 2015
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: HARI BABU SUNKARA, Herbert Vernon Bendler, Raja Hari Poladi
  • Publication number: 20150051326
    Abstract: 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: Application
    Filed: August 13, 2013
    Publication date: February 19, 2015
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: HARI BABU SUNKARA, Raja Hari Poladi, Herbert Vernon Bendler
  • Patent number: 8946485
    Abstract: 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: Grant
    Filed: August 29, 2011
    Date of Patent: February 3, 2015
    Assignee: E I du Pont de Nemours and Company
    Inventors: Gyorgyi Fenyvesi, Raja Hari Poladi, Hari Babu Sunkara
  • Publication number: 20140356631
    Abstract: 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: Application
    Filed: December 12, 2012
    Publication date: December 4, 2014
    Inventors: Ayumu Yokoyama, Hari Babu Sunkara, Rajesh Gopalan Saliya
  • Patent number: 8884073
    Abstract: 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: Grant
    Filed: April 23, 2012
    Date of Patent: November 11, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: Edward Budi Muliawan, Raja Hari Poladi, Hari Babu Sunkara
  • Publication number: 20140264199
    Abstract: 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: Application
    Filed: March 11, 2014
    Publication date: September 18, 2014
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Hari Babu Sunkara, Raja Hari Poladi
  • Publication number: 20140274824
    Abstract: 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: Application
    Filed: March 11, 2014
    Publication date: September 18, 2014
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Hari Babu SUNKARA, Raja Hari Poladi
  • Publication number: 20140274846
    Abstract: 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: Application
    Filed: March 11, 2014
    Publication date: September 18, 2014
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: HARI BABU SUNKARA, Raja Hari Poladi
  • Publication number: 20140259884
    Abstract: 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: Application
    Filed: March 11, 2014
    Publication date: September 18, 2014
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: HARI BABU SUNKARA, Raja Hari Poladi