Patents by Inventor Chandrashekhar Vasant Rode

Chandrashekhar Vasant Rode 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: 20230013641
    Abstract: The present invention provides a process for the synthesis of Furandicarboxylic acid (FDCA) comprising heating a mixture of fructose, aqueous NaCl or KCl, solvent, methyl isobutyl ketone (MIBK) and a catalyst at a temperature in the range of 150 to 200° C. in a sealed vessel for a time period in the range of 2 to 5 hours to yield crude 5-(hydroxymethyl)furfural (5-HMF). The crude 5-HMF further reacts with a biocatalyst at a temperature in a range of 20 to 50° C. for a period at a range of 24 to 96 hours to yield FDCA, wherein the conversion of 5-HMF to FDCA is in the range of 90 to 100%.
    Type: Application
    Filed: December 18, 2020
    Publication date: January 19, 2023
    Inventors: Chandrashekhar Vasant RODE, Mahesh Shantappa DHARNE, Roopa Dhanraj PARATE
  • Publication number: 20220227686
    Abstract: The present disclosure provides a process for the synthesis of isobutyl benzene by side chain alkylation of toluene in the presence of a catalyst. The catalyst used in the process of present disclosure provides maximum conversion of toluene with high selectivity towards isobutyl benzene.
    Type: Application
    Filed: May 28, 2020
    Publication date: July 21, 2022
    Inventors: Sanjay Pandurag KAMBLE, Chandrashekhar Vasant RODE, Nandakumar Velayudhan PILLAI, Karthick RAMALINGAM, Rohit Ravi SHETTY
  • Patent number: 11136302
    Abstract: The present invention discloses a single step process for the synthesis of furan derivative from carbohydrate comprises stirring the reaction mixture of carbohydrate in solvent in presence of catalyst at temperature in the range of 170 to 190° C. for the period in the range of 23 to 25 hrs to afford corresponding furan derivative.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: October 5, 2021
    Assignee: Council of Scientific & Industrial Research
    Inventors: Chandrashekhar Vasant Rode, Suhas Hanmant Shinde
  • Publication number: 20210147374
    Abstract: The present invention discloses a single step process for the synthesis of furan derivative from carbohydrate comprises stirring the reaction mixture of carbohydrate in solvent in presence of catalyst at temperature in the range of 170 to 190° C. for the period in the range of 23 to 25 hrs to afford corresponding furan derivative.
    Type: Application
    Filed: May 9, 2018
    Publication date: May 20, 2021
    Inventors: Chandrashekhar Vasant RODE, Suhas Hanmant SHINDE
  • Patent number: 10428038
    Abstract: The present invention provides a single step process for the synthesis of furfuryl ethyl ether comprises refluxing the reaction mixture of furfuryl alcohol, ethanol and catalyst at temperature in the range of 80 to 120° C. for the period in the range of 3 to 7 hrs to afford furfuryl ethyl ether. The catalyst used in present invention is Zr incorporated SBA-15. Further, the conversion of furfuryl alcohol is in the range of 60 to 90%. The selectivity of reaction towards furfuryl ethyl ether is in the range of 85 to 95%.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: October 1, 2019
    Assignee: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Chandrashekhar Vasant Rode, Chetana Rupak Patil
  • Patent number: 10385029
    Abstract: The present invention disclose a single step one pot process for synthesis of oxazoline and imidazole derivatives from glycerol using solid acid metal catalyst with improved yield.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: August 20, 2019
    Inventors: Chandrashekhar Vasant Rode, Rajan Pandya, Rasika Bharat Mane
  • Publication number: 20190218195
    Abstract: The present invention provides a single step process for the synthesis of furfuryl ethyl ether comprises refluxing the reaction mixture of furfuryl alcohol, ethanol and catalyst at temperature in the range of 80 to 120° C. for the period in the range of 3 to 7 hrs to afford furfuryl ethyl ether. The catalyst used in present invention is Zr incorporated SBA-15. Further, the conversion of furfuryl alcohol is in the range of 60 to 90%. The selectivity of reaction towards furfuryl ethyl ether is in the range of 85 to 95%.
    Type: Application
    Filed: January 18, 2019
    Publication date: July 18, 2019
    Inventors: Chandrashekhar Vasant Rode, Chetana Rupak Patil
  • Publication number: 20170240515
    Abstract: The present invention disclose a single step one pot process for synthesis of oxazoline and imidazole derivatives from glycerol using solid acid metal catalyst with improved yield.
    Type: Application
    Filed: September 11, 2015
    Publication date: August 24, 2017
    Inventors: CHANDRASHEKHAR VASANT RODE, RAJAN PANDYA, RASIKA BHARAT MANE
  • Patent number: 8975421
    Abstract: An industrially viable process for selective preparation of ?- valerolactone using recyclable non noble metal catalyst is provided. This process provides 80-100% conversion to ?-valerolactone, with selectivity in the range of 80-100%.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: March 10, 2015
    Assignee: Council of Scientific & Industrial Research
    Inventors: Chandrashekhar Vasant Rode, Amol Mahalingappa Hengne
  • Patent number: 7250537
    Abstract: The present invention provides a novel method of hydrogenating a phenol for hydrogenating a phenol industrially advantageously. The present invention relates, in the case of phenol hydrogenation in which carbon dioxide is made to participate in the reaction, to a method of hydrogenating a phenol characterized by using a supported rhodium and/or ruthenium catalyst, whereby the phenol is hydrogenated efficiently at a lower reaction temperature than with prior art; such a method characterized in that carbon dioxide having a temperature of 20 to 250° C. and a pressure of 0.1 to 50 MPa is used as the carbon dioxide; and such a method characterized in that hydrogen under conditions of a temperature of 20 to 250° C. and a pressure of 0.1 to 50 MPa is used. An environmentally friendly phenol hydrogenation process that uses no harmful organic solvents can be realized.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: July 31, 2007
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Masayuki Shirai, Chandrashekhar Vasant Rode, Uday Dattopant Joshi, Kazuo Torii, Takafumi Sato
  • Patent number: 7037877
    Abstract: The present invention provides a process for the preparation of an improved copper chromite catalyst for the hydrogenation of diethyl maleate to tetrahydrofuran with very high selectivity. This invention particularly relates to a process for the preparation of an improved copper chromite catalyst with specific composition and physical properties containing copper, chromium, zinc and aluminium as catalyst components in order to achieve selective production of tetrahydrofuran via single step hydrogenation of diethyl maleate. The calcination procedure has also been described to achieve the best activity. The catalyst has a life of more than 630 hours with constant activity. The used catalyst can also be regenerated to match the original hydrogenation activity.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: May 2, 2006
    Assignee: Council of Scientific and Industrial Research
    Inventors: Raghunath Vitthal Chaudhari, Rengaswamy Jaganathan, Sopan Tukaram Chaudhari, Chandrashekhar Vasant Rode
  • Patent number: 6979753
    Abstract: The present invention provides an improved process for preparation of 2-phenyl ethanol. More specifically, the present invention relates to a process for preparing 2-phenyl ethanol by catalytic transfer hydrogenation of styrene oxide, in the presence of a supported transition metal catalyst. The catalyst system comprises of a palladium supported on silica, alumina, clay or charcoal.
    Type: Grant
    Filed: December 10, 2003
    Date of Patent: December 27, 2005
    Assignee: Council of Scientific and Industrial Research
    Inventors: Chandrashekhar Vasant Rode, Vikas Shripat Kshirsagar, Vilas Hari Rane, Raghunath Vitthal Chaudhari
  • Patent number: 6660675
    Abstract: A hydrogenation catalyst of the general formula AB(y)C(z) wherein A is a support comprising of a salt of a Group II A metal or zeolite, B is a noble metal selected from Pt or Pd, y=0.2 to 10%, C is nickel and z=0 to 15.0%, with the proviso that when B is Pt, z=0.
    Type: Grant
    Filed: August 28, 2001
    Date of Patent: December 9, 2003
    Assignee: Council of Scientific and Industrial Research
    Inventors: Raghunath Vitthal Chaudhari, Chandrashekhar Vasant Rode, Rengaswamy Jaganathan, Manisha Madhukar Telkar, Vilas Hari Rane
  • Patent number: 6528689
    Abstract: A hydrogenation catalyst of the general formula AB(y)C(z) wherein A is a support comprising of a salt of a Group II A metal or zeolite, B is a noble metal selected from Pt or Pd, y=0.2 to 10%, C is nickel and z=0 to 15.0%, with the proviso that when B is Pt, z=0.
    Type: Grant
    Filed: August 28, 2001
    Date of Patent: March 4, 2003
    Assignee: Council of Scientific and Industrial Research
    Inventors: Raghunath Vitthal Chaudhari, Chandrashekhar Vasant Rode, Rengaswamy Jaganathan, Manisha Madhukar Telkar, Vilas Hari Rane
  • Patent number: 6469221
    Abstract: The present invention relates to a process for the conversion of 1,4 butynediol to 1,4 butanediol or a mixture of 1,4 butanediol and 1,4 butenediol comprising hydrogenating an aqueous solution of 1,4 butynediol using platinum supported CaCO3 catalyst at a temperature in the range of 20-190° C. under a hydrogen pressure in the range between 5-100 bar and collecting the product by any known method.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: October 22, 2002
    Assignee: Council of Scientific and Industrial Research
    Inventors: Raghunath Vitthal Chaudhari, Chandrashekhar Vasant Rode, Rengaswamy Jaganathan, Manisha Madhukar Telkar, Vilas Hari Rane
  • Publication number: 20020099244
    Abstract: A hydrogenation catalyst of the general formula AB(y)C(z) wherein A is a support comprising of a salt of a Group II A metal or zeolite, B is a noble metal selected from Pt or Pd, y=0.2 to 10%, C is nickel and z=0 to 15.0%, with the proviso that when B is Pt, z=0.
    Type: Application
    Filed: August 28, 2001
    Publication date: July 25, 2002
    Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Raghunath Vitthal Chaudhari, Chandrashekhar Vasant Rode, Rengaswamy Jaganathan, Manisha Madhukar Telkar, Vilas Hari Rane
  • Patent number: 6420615
    Abstract: A process for the preparation of 1,4 butenediol comprising hydrogenating an aqueous solution of 1,4 butynediol under stirring conditions over a supported platinum or palladium and nickel catalyst in basic medium at a temperature in the range of 20-110° C. and pressure in the range between 200-700 psig till the reaction is completed, cooling the reaction mixture to room temperature and separating the catalyst by known methods to obtain 1,4 butenediol.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: July 16, 2002
    Assignee: Council of Scientific and Industrial Research
    Inventors: Raghunath Vitthal Chaudhari, Chandrashekhar Vasant Rode, Rengaswamy Jaganathan, Manisha Madhukar Telkar, Vilas Hari Rane
  • Publication number: 20020091289
    Abstract: A hydrogenation catalyst of the general formula AB(y)C(z) wherein A is a support comprising of a salt of a Group II A metal or zeolite, B is a noble metal selected from Pt or Pd, y=0.2 to 10%, C is nickel and z=0 to 15.0%, with the proviso that when B is Pt, z=0.
    Type: Application
    Filed: August 28, 2001
    Publication date: July 11, 2002
    Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Raghunath Vitthal Chaudhari, Chandrashekhar Vasant Rode, Rengaswamy Jaganathan, Manisha Madhukar Telkar, Vilas Hari Rane
  • Patent number: 6403833
    Abstract: The present invention provides a single step process for the preparation of p-aminophenol by hydrogenation of nitrobenzene in presence of an aqueous acid over a mono or bimetallic nickel catalyst at a temperature in the range of 80-120° C. for a period of 1 to 4 hrs. The resulting reaction mixture is extracted with an organic solvent like ethyl acetate, cyclohexane or toluene to separate the aqueous layer containing PAP and neutralizing it with ammonia solution to recover the solid p-aminophenol.
    Type: Grant
    Filed: January 30, 2001
    Date of Patent: June 11, 2002
    Assignee: Council of Scientific and Industrial Research
    Inventors: Chandrashekhar Vasant Rode, Manisha Jagdeeshrao Vaidya, Raghunath Vitthal Chaudhari
  • Patent number: 6166269
    Abstract: The present invention provides an improved process for the preparation of 2-phenyl ethanol [CAS 60-12-8] by catalytic hydrogenation of styrene oxide [CAS 96-09-3] with supported platinum group metal catalysts in the presence of an organic as well as inorganic base as a promoter, using alcohol as a solvent. The reaction is carried out at a temperature ranging between 40-120.degree. C. and the hydrogen pressure of 50-800 psig, under stirring conditions. After the reaction is complete, the reaction mixture is cooled to room temperature, catalyst is separated from the product by conventional methods like filtration. This invention is particularly useful as an alternative to the conventional methods like Grignard synthesis and Friedel-Craft alkylation for manufacture of 2-phenyl ethanol. This invention eliminates the handling of dangerous diethyl ether solvent, ethylene oxide and the use of AlCl.sub.3 which poses serious effluent problems.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: December 26, 2000
    Assignee: Council of Scientific and Industrial Resesearch
    Inventors: Raghunath Vitthal Chaudhari, Manisha Madhukar Telkar, Chandrashekhar Vasant Rode