Patents by Inventor Raja Hari Poladi

Raja Hari Poladi 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: 20230257520
    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: April 21, 2023
    Publication date: August 17, 2023
    Inventors: Hari Babu SUNKARA, Raja Hari POLADI
  • Publication number: 20210269589
    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: May 5, 2021
    Publication date: September 2, 2021
    Inventors: Hari Babu Sunkara, Raja Hari Poladi
  • Publication number: 20210147620
    Abstract: A process is disclosed herein, the process comprising: a) contacting a mixture comprising furandicarboxylic acid dialkyl ester, 1,3-propanediol, and a metal catalyst at a temperature in the range of from 160° C. to 220° C. to form a 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 the concentration of metal catalyst is in the range of from 20 ppm to 400 ppm, based on the total weight of the mixture; b) removing at least a portion of the unreacted 1,3-propanediol; and c) heating the prepolymer to a temperature in the range of from 230° C. to 260° C. under reduced pressure to form poly(trimethylene furandicarboxylate) polymer while removing 1,3-propanediol.
    Type: Application
    Filed: December 28, 2020
    Publication date: May 20, 2021
    Inventors: ANN Y. LIAUW, RAJA HARI POLADI, HARI BABU SUNKARA
  • 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: 20190309125
    Abstract: A process is disclosed herein, the process comprising: a) contacting a mixture comprising furandicarboxylic acid dialkyl ester, 1,3-propanediol, and a metal catalyst at a temperature in the range of from 160° C. to 220° C. to form a 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 the concentration of metal catalyst is in the range of from 20 ppm to 400 ppm, based on the total weight of the mixture; b) removing at least a portion of the unreacted 1,3-propanediol; and c) heating the prepolymer to a temperature in the range of from 230° C. to 260° C. under reduced pressure to form poly(trimethylene furandicarboxylate) polymer while removing 1,3-propanediol.
    Type: Application
    Filed: October 10, 2017
    Publication date: October 10, 2019
    Inventors: Ann Y. Liauw, Raja Hari Poladi, Hari Babu Sunkara
  • Publication number: 20180303732
    Abstract: Disclosed herein are biodegradable coating and paint compositions comprising 1,3-propanediol, wherein the 1,3-propanediol in said biodegradable composition has a bio-based carbon content of about 1% to 100%. In addition, it is preferred that the 1,3-propanediol be biologically-derived, and wherein upon biodegradation, the biologically-derived 1,3-propanediol contributes no anthropogenic CO2 emissions to the atmosphere.
    Type: Application
    Filed: June 20, 2018
    Publication date: October 25, 2018
    Applicant: DuPont Tate & Lyle Bio Products Company, LLC
    Inventors: Ann Wehner, Gyorgyi Fenyvesi, Carl F. Muska, Joseph W. DeSalvo, Melissa Joerger, Robert Miller, Irwin A. Palefsky, Raja Hari Poladi
  • Publication number: 20170216171
    Abstract: Disclosed herein are biodegradable compositions comprising 1,3-propanediol, wherein the 1,3-propanediol in said biodegradable composition has a bio-based carbon content of about 1% to 100%. In addition, it is preferred that the 1,3-propanediol be biologically-derived, and wherein upon biodegradation, the biologically-derived 1,3-propanediol contributes no anthropogenic CO2 emissions to the atmosphere.
    Type: Application
    Filed: April 21, 2017
    Publication date: August 3, 2017
    Applicant: Dupont Tate & Lyle Bio Products Company, LLC
    Inventors: Ann Wehner, Gyorgyi Fenyvesi, Carl F. Muska, Joseph W. DeSalvo, Melissa Joerger, Robert Miller, Irwin A. Palefsky, Raja Hari Poladi
  • Patent number: 9668951
    Abstract: Biodegradable pharmaceutical compositions comprising 1,3-propanediol and its esters are provided. The 1,3-propanediol and its esters in the pharmaceutical composition are biologically derived, and as such, the pharmaceutical compositions exhibit a low anthropogenic CO2 emission profile.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: June 6, 2017
    Assignee: DuPont Tate & Lyle Bio Products Company, LLC
    Inventors: Robert Miller, Joseph Desalvo, Gyorgyi Fenyvesi, Melissa Joerger, Raja Hari Poladi, Ann Wehner
  • Patent number: 9375390
    Abstract: Biodegradable agricultural compositions comprising 1,3-propanediol and its esters are provided. The 1,3-propanediol and its esters in the agricultural composition are biologically derived, and as such, the agricultural compositions exhibit a low anthropogenic CO2 emission profile.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: June 28, 2016
    Assignee: DuPont Tate & Lyle Bio Products Company, LLC
    Inventors: Robert Miller, Joseph Desalvo, Gyorgyi Fenyvesi, Raja Hari Poladi, Ann Wehner
  • 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
  • Publication number: 20150125403
    Abstract: Disclosed herein are methods of reducing irritation associated with personal care and cosmetic compositions comprising 1,3-propanediol, wherein the 1,3-propanediol in said personal care or cosmetic composition has a bio-based carbon content of about 1% to 100%. In addition, it is preferred that the 1,3-propanediol be biologically-derived, and wherein upon biodegradation, the biologically-derived 1,3-propanediol contributes no anthropogenic carbon dioxide emissions to the atmosphere.
    Type: Application
    Filed: January 5, 2015
    Publication date: May 7, 2015
    Applicant: DuPont Tate & Lyle Bio Products Company, LLC
    Inventors: Melissa Joerger, Gyorgyi Fenyvesi, Raja Hari Poladi, Irwin A. Palefsky, Ann Wehner
  • 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
  • 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: 20140328938
    Abstract: Biodegradable pharmaceutical compositions comprising 1,3-propanediol and its esters are provided. The 1,3-propanediol and its esters in the pharmaceutical composition are biologically derived, and as such, the pharmaceutical compositions exhibit a low anthropogenic CO2 emission profile.
    Type: Application
    Filed: July 14, 2014
    Publication date: November 6, 2014
    Applicant: DuPont Tate & Lyle Bio Products Company, LLC
    Inventors: Robert Miller, Joseph Desalvo, Gyorgyi Fenyvesi, Melissa Joerger, Raja Hari Poladi, Ann Wehner
  • Publication number: 20140326923
    Abstract: Biodegradable agricultural compositions comprising 1,3-propanediol and its esters are provided. The 1,3-propanediol and its esters in the agricultural composition are biologically derived, and as such, the agricultural compositions exhibit a low anthropogenic CO2 emission profile.
    Type: Application
    Filed: July 14, 2014
    Publication date: November 6, 2014
    Applicant: DuPont Tate & Lyle Bio Products Company, LLC
    Inventors: Robert Miller, Joseph Desalvo, Gyorgyi Fenyvesi, Raja Hari Poladi, Ann Wehner
  • 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
  • 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