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).

  • ACRYLIC AND METHACRYLIC ESTERS OF POLY(TRIMETHYLENE ETHER) GLYCOL
    Publication number: 20100160538
    Abstract: Novel (meth)acrylic ester of poly(trimethylene ether) glycol compositions are provided. The compositions comprise an ester (a monoester, a diester or mixtures thereof) of a polytrimethylene ether glycol and at least one polymerization inhibitor.
    Type: Application
    Filed: October 28, 2009
    Publication date: June 24, 2010
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Gyorgyi Fenyvesi, Raja Hari Poladi, Hari Babu Sunkara
  • (METH)ACRYLIC ESTERS OF POLY(TRIMETHYLENE ETHER) GLYCOL AND USES THEREOF
    Publication number: 20100159767
    Abstract: Processes and products utilizing (meth)acrylic esters of poly(trimethylene ether) glycol are provided. Products that can be made include ceramic materials, personal care products, inks, coatings, fabrics, and other articles that can be made from reaction products of (meth)acrylic ester of poly(trimethylene ether) glycol with certain monomers.
    Type: Application
    Filed: October 28, 2009
    Publication date: June 24, 2010
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Gyorgyi Fenyvesi, Raja Hari Poladi, Hari Babu Sunkara
  • THERMOPLASTIC POLYURETHANES COMPRISING POLYTRIMETHYLENE ETHER SOFT SEGMENTS
    Publication number: 20100152405
    Abstract: Provided are hermoplastic polyurethanes prepared from reactants comprising: (a) polytrimethylene ether glycol; (b) diisocyanate; (c) diol chain extender; and (d) monofunctional isocyanate reactive alcohol or amine. Also provided are methods of manufacturing the polyurethanes.
    Type: Application
    Filed: February 19, 2010
    Publication date: June 17, 2010
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventor: Hari Babu SUNKARA
  • Linear amine functionalized poly(trimethylene ether) compositions
    Patent number: 7728175
    Abstract: The present invention relates to linear amine-functionalized poly(trimethylene ether) compositions, and processes to produce these compositions.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: June 1, 2010
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Kai Qi, Hari Babu Sunkara
  • Processes for producing random polytrimethylene ether ester
    Patent number: 7645853
    Abstract: Processes for preparing random polytrimethylene ether ester are provided. The processes include contacting 1,3-propanediol with a suitable polymerization catalyst, wherein the 1,3-propanediol comprises about 10 microg/g or less peroxide compounds, based on the weight of 1,3-propanediol, and about 100 microg/g or less carbonyl compounds based on the weight of the 1,3-propanediol.
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: January 12, 2010
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Howard C. Ng, Hari Babu Sunkara
  • UNSATURATED POLYESTER RESIN COMPOSITIONS COMPRISING 1,3-PROPANEDIOL
    Publication number: 20090312485
    Abstract: The present invention relates to unsaturated polyester resin (UPR) compositions comprising 1,3-propanediol. The 1,3-propanediol can be renewably-sourced.
    Type: Application
    Filed: November 6, 2008
    Publication date: December 17, 2009
    Applicant: E. I. DUPONT DE NEMOURS AND COMPANY
    Inventors: Matthew Arthur Page, Hari Babu Sunkara, Judith Johanna Van Gorp
  • Personal care compositions
    Patent number: 7628999
    Abstract: This invention relates to personal care compositions containing polytrimethylene ether glycol in a variety of physical forms including solutions, gels, oil-in-water emulsions, water-in-oil emulsions, suspensions and solids. In a particularly preferred embodiment, the polytrimethylene ether glycol is derived predominantly from monomers obtained from renewable resources, making the personal care products of this embodiment of the present invention more environmentally friendly in terms of their manufacture, use and disposal.
    Type: Grant
    Filed: May 11, 2007
    Date of Patent: December 8, 2009
    Inventor: Hari Babu Sunkara
  • PLASTICIZERS COMPRISING POLY(TRIMETHYLENE ETHER) GLYCOL ESTERS
    Publication number: 20090281220
    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: May 5, 2009
    Publication date: November 12, 2009
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Gyorgyi Fenyvesi, Rahul B. Kasat, Matthew Arthur Page, Raja Hari Poladi, Hari Babu Sunkara
  • METHOD FOR ENHANCED RECOVERY OF OIL FROM OIL RESERVOIRS
    Publication number: 20090197779
    Abstract: The present invention provides a method for recovering oil from a subterranean reservoir using waterflooding, wherein the flooding fluid used in the waterflooding process comprises water and one or more of 1,3-propanediol, oligomers of 1,3-propanediol and polymers of 1,3-propanediol. The use of 1,3-propanediol, oligomers and/or polymers thereof is expected to increase the recovery of oil by improving both the oil/water mobility ratio and the sweep efficiency in reservoirs with a high degree of heterogeneity.
    Type: Application
    Filed: January 31, 2008
    Publication date: August 6, 2009
    Inventors: SCOTT CHRISTOPHER JACKSON, Hari Babu Sunkara
  • Wellbore Fluids Comprising Poly(trimethylene ether) glycol Polymers
    Publication number: 20090197781
    Abstract: Wellbore fluids containing poly(trimethylene ether)glycols are provided. The wellbore fluids can provide enhanced functionality, improved cost effectiveness, and reduced environmental impact as compared to conventional wellbore fluids.
    Type: Application
    Filed: January 31, 2008
    Publication date: August 6, 2009
    Inventor: Hari Babu Sunkara
  • PERSONAL CARE COMPOSITIONS
    Publication number: 20090169500
    Abstract: This invention relates to personal care compositions containing polytrimethylene ether glycol in a variety of physical forms including solutions, gels, oil-in-water emulsions, water-in-oil emulsions, suspensions and solids. In a particularly preferred embodiment, the polytrimethylene ether glycol is derived predominantly from monomers obtained from renewable resources, making the personal care products of this embodiment of the present invention more environmentally friendly in terms of their manufacture, use and disposal.
    Type: Application
    Filed: March 9, 2009
    Publication date: July 2, 2009
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: Hari Babu Sunkara
  • COPOLYMERS COMPRISING TRIMETHYLENE CARBONATE AND POLY(TRIMETHYLENE ETHER) GLYCOLS
    Publication number: 20090143555
    Abstract: The present invention relates to novel copolymers comprising unsubstituted or R-substituted trimethylene carbonate and poly(trimethylene ether)glycol. The copolymers find use in areas including personal care, coatings and lubricants.
    Type: Application
    Filed: November 25, 2008
    Publication date: June 4, 2009
    Applicant: E. I. DuPont de Nemours and Company
    Inventors: Robert DiCosimo, Neville Everton Drysdale, Hari Babu Sunkara
  • HYDROTALCITE CATALYZED POLYMERIZATION OF TRIMETHYLENE CARBONATE
    Publication number: 20090143563
    Abstract: The present invention relates to the use of hydrotalcites as catalysts for the polymerization of unsubstituted or substituted trimethylene carbonate.
    Type: Application
    Filed: November 25, 2008
    Publication date: June 4, 2009
    Applicant: E. I. DuPont de Nemours and Company
    Inventors: David Richard Corbin, Robert Dicosimo, Neville Everton Drysdale, Hari Babu Sunkara
  • PROCESSES FOR THE POLYMERIZATION OF TRIMETHYLENE CARBONATE TO POLY(TRIMETHYLENE GLYCOL CARBONATE TRIMETHYLENE GLYCOL ETHER) DIOL
    Publication number: 20090143564
    Abstract: This invention relates to solventless processes for the polymerization of an unsubstituted or substituted trimethylene carbonate to an unsubstituted or substituted poly(1,3-propanediol carbonate 1,3-propanediol ether)diol, using one or more solid acid catalysts.
    Type: Application
    Filed: November 25, 2008
    Publication date: June 4, 2009
    Applicant: E. I. DuPont de Nemours and Company
    Inventors: Robert DiCosimo, Neville Everton Drysdale, Hari Babu Sunkara
  • COMPOSITIONS OF AND PROCESSES FOR PRODUCING POLY(TRIMETHYLENE GLYCOL CARBONATE TRIMETHYLENE GLYCOL ETHER) DIOL
    Publication number: 20090143624
    Abstract: This invention relates to compositions of and processes for producing an unsubstituted or R-substituted poly(trimethylene glycol carbonate trimethylene glycol ether)diol. The processes use acidic ion exchange resins and include solvents.
    Type: Application
    Filed: November 25, 2008
    Publication date: June 4, 2009
    Applicant: E. I. DuPont de Nemours and Company
    Inventors: Robert DiCosimo, Neville Everton Drysdale, Hari Babu Sunkara
  • PROCESS TO MAKE POLY(TRIMETHYLENE CARBONATE) GLYCOL
    Publication number: 20090143562
    Abstract: This invention relates to the production of poly(trimethylene carbonate) glycol via the polymerization of trimethylene carbonate employing one or more acidic ion exchange resin catalysts in the presence of a solvent. The products formed are substantially free of these catalysts.
    Type: Application
    Filed: November 25, 2008
    Publication date: June 4, 2009
    Applicant: E. I. DuPont de Nemours and Company
    Inventors: Robert DiCosimo, Neville Everton Drysdale, Hari Babu Sunkara
  • MOISTURE VAPOR PERMEABLE CARPET UNDERLAY
    Publication number: 20090123688
    Abstract: A carpet underlay that is liquid impermeable and moisture vapor permeable comprising a foamed cushion and a barrier film affixed to the side of the foamed cushion in contact with the carpet, the barrier film being impermeable to liquids and permeable to moisture vapor and comprising copolymer that comprises polytrimethylene ether soft segments and hard segments selected from the group consisting of polyester, polyamide, polyurethane and polyurethane-urea.
    Type: Application
    Filed: November 8, 2007
    Publication date: May 14, 2009
    Inventors: Ray W. Miller, Hari Babu Sunkara
  • Electrical Insulation Fluids for Use in Electrical Apparatus
    Publication number: 20090121200
    Abstract: Insulation fluids comprising polytrimethylene ether glycol esters are provided. The insulation fluids can be used in electrical apparatuses.
    Type: Application
    Filed: November 12, 2007
    Publication date: May 14, 2009
    Inventors: Lisa C. Bates, Hari Babu Sunkara
  • POLYURETHANE FOAMS FROM POLYTRIMETHYLENE ETHER GLYCOL
    Publication number: 20090124719
    Abstract: Provided are polyurethane foams containing polytrimethylene ether segments derived from polytrimethylene ether glycols.
    Type: Application
    Filed: November 6, 2008
    Publication date: May 14, 2009
    Applicant: E. I. DUPONT DE NEMOURS AND COMPANY
    Inventors: Joseph Anthony Creazzo, Gary Loh, Hari Babu Sunkara
  • Thermoplastic elastomer blend composition
    Patent number: 7531593
    Abstract: This invention relates to thermoplastic elastomer compositions comprising blends of polyether ester elastomers and crosslinkable poly(meth)acrylate rubbers, and the manufacture and use thereof in, for example, shaped or molded rubber articles.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: May 12, 2009
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Hari Babu Sunkara, Herbert Vernon Bendler