Patents by Inventor Mesfin Ejerssa Janka

Mesfin Ejerssa Janka 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).

  • Furan-2,5-dicarboxylic acid purge process
    Patent number: 10882032
    Abstract: Disclosed is an oxidation process to produce a crude carboxylic acid product carboxylic acid product. The process comprises oxidizing a feed stream comprising at least one oxidizable compound to generate a crude carboxylic acid slurry comprising furan-2,5-dicarboxylic acid (FDCA) and compositions thereof. Also disclosed is a process to produce a dry purified carboxylic acid product by utilizing various purification methods on the crude carboxylic acid.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: January 5, 2021
    Assignee: Eastman Chemical Company
    Inventors: Kevin John Fontenot, Mesfin Ejerssa Janka, Kenny Randolph Parker, Ashfaq Shahanawaz Shaikh, Lee Reynolds Partin, Charles Edwan Sumner, Jr., Shane Kipley Kirk, Paula Moody, Bradford Russell Bowers, Michael Charles Morrow
  • PRODUCTION OF PURIFIED DIALKYL-FURAN-2,5-DICARBOXYLATE (DAFD) IN A RETROFITTED DMT PLANT
    Publication number: 20200354330
    Abstract: Disclosed is a process to produce a purified vapor comprising dialkyl-furan-2,5-dicarboxylate (DAFD). Furan-2,5-dicarboxylic acid (FDCA) and an alcohol in an esterification zone to generate a crude diester stream containing dialkyl furan dicarboxylate (DAFD), unreacted alcohol, 5-(alkoxycarbonyl) furan-2-carboxylic acid (ACFC), and alkyl furan-2-carboxylate (AFC). The esterification zone comprises at least one reactor that has been previously used in an DMT process.
    Type: Application
    Filed: July 27, 2020
    Publication date: November 12, 2020
    Applicant: Eastman Chemical Company
    Inventors: Kevin John Fontenot, Mesfin Ejerssa Janka, Kenny Randolph Parker, Ashfaq Shahanawaz Shaikh
  • METHOD FOR PRODUCING PURIFIED DIALKYL-FURAN-2,5-DICARBOXYLATE
    Publication number: 20200331879
    Abstract: Disclosed is a purified dialkyl furan dicarboxylate (DAFD) vapor composition containing at least 99.5 wt. % DAFD; 5-(alkoxycarbonyl) furan-2-carboxylic acid (ACFC) that, if present, is present in an amount of not more than 1000 ppm, alkyl-5-formylfuran-2-carboxylate (AFFC) that, if present, is present in an amount of not more than 1000 ppm, 5-(dialkoxymethyl)furan-2-carboxylic acid (DAFCA) that if present, is present in an amount of not more than 1000 ppm, and alkyl 5-(dialkoxymethyl)furan-2-carboxylate (ADAFC) that if present, is present in an amount of not more than 1000 ppm, in each case based on the weight of the DAFD vapor composition.
    Type: Application
    Filed: June 29, 2020
    Publication date: October 22, 2020
    Applicant: Eastman Chemical Company
    Inventor: Mesfin Ejerssa Janka
  • FURAN-2,5-DICARBOXYLIC ACID PURGE PROCESS
    Publication number: 20200324277
    Abstract: Disclosed is an oxidation process to produce a crude carboxylic acid product carboxylic acid product. The process comprises oxidizing a feed stream comprising at least one oxidizable compound to generate a crude carboxylic acid slurry comprising furan-2,5-dicarboxylic acid (FDCA) and compositions thereof. Also disclosed is a process to produce a dry purified carboxylic acid product by utilizing various purification methods on the crude carboxylic acid.
    Type: Application
    Filed: June 29, 2020
    Publication date: October 15, 2020
    Applicant: Eastman Chemical Company
    Inventors: Mesfin Ejerssa Janka, Kenny Randolph Parker, Ashfaq Shahanawaz Shaikh, Lee Reynolds Partin
  • Production of purified dialkyl-furan-2,5-dicarboxylate (DAFD) in a retrofitted DMT plant
    Patent number: 10723712
    Abstract: Disclosed is a process to produce a purified vapor comprising dialkyl-furan-2,5-dicarboxylate (DAFD). Furan-2,5-dicarboxylic acid (FDCA) and an alcohol in an esterification zone to generate a crude diester stream containing dialkyl furan dicarboxylate (DAFD), unreacted alcohol, 5-(alkoxycarbonyl)furan-2-carboxylic acid (ACFC), and alkyl furan-2-carboxylate (AFC). The esterification zone comprises at least one reactor that has been previously used in an DMT process.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: July 28, 2020
    Assignee: Eastman Chemical Company
    Inventors: Kevin John Fontenot, Mesfin Ejerssa Janka, Kenny Randolph Parker, Ashfaq Shahanawaz Shaikh
  • Method for producing purified dialkyl-furan-2,5-dicarboxylate
    Patent number: 10696645
    Abstract: Disclosed is a purified dialkyl furan dicarboxylate (DAFD) vapor composition containing at least 99.5 wt. % DAFD; 5-(alkoxycarbonyl) furan-2-carboxylic acid (ACFC) that, if present, is present in an amount of not more than 1000 ppm, alkyl-5-formylfuran-2-carboxylate (AFFC) that, if present, is present in an amount of not more than 1000 ppm, 5-(dialkoxymethyl)furan-2-carboxylic acid (DAFCA) that if present, is present in an amount of not more than 1000 ppm, and alkyl 5-(dialkoxymethyl)furan-2-carboxylate (ADAFC) that if present, is present in an amount of not more than 1000 ppm, in each case based on the weight of the DAFD vapor composition.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: June 30, 2020
    Assignee: Eastman Chemical Company
    Inventor: Mesfin Ejerssa Janka
  • Furan-2,5-dicarboxylic acid purge process
    Patent number: 10695755
    Abstract: Disclosed is an oxidation process to produce a crude carboxylic acid product carboxylic acid product. The process comprises oxidizing a feed stream comprising at least one oxidizable compound to generate a crude carboxylic acid slurry comprising furan-2,5-dicarboxylic acid (FDCA) and compositions thereof. Also disclosed is a process to produce a dry purified carboxylic acid product by utilizing various purification methods on the crude carboxylic acid.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: June 30, 2020
    Assignee: Eastman Chemical Company
    Inventors: Mesfin Ejerssa Janka, Kenny Randolph Parker, Ashfaq Shahanawaz Shaikh, Lee Reynolds Partin
  • PRODUCTION OF PURIFIED DIALKYL-FURAN-2,5-DICARBOXYLATE (DAFD) IN A RETROFITTED DMT PLANT
    Publication number: 20200123119
    Abstract: Disclosed is a process to produce a purified vapor comprising dialkyl-furan-2,5-dicarboxylate (DAFD). Furan-2,5-dicarboxylic acid (FDCA) and an alcohol in an esterification zone to generate a crude diester stream containing dialkyl furan dicarboxylate (DAFD), unreacted alcohol, 5-(alkoxycarbonyl)furan-2-carboxylic acid (ACFC), and alkyl furan-2-carboxylate (AFC). The esterification zone comprises at least one reactor that has been previously used in an DMT process.
    Type: Application
    Filed: December 18, 2019
    Publication date: April 23, 2020
    Applicant: Eastman Chemical Company
    Inventors: Kevin John Fontenot, Mesfin Ejerssa Janka, Kenny Randolph Parker, Ashfaq Shahanawaz Shaikh
  • Purifying crude furan 2,5-dicarboxylic acid by hydrogenation and a purge zone
    Patent number: 10611743
    Abstract: A process for purifying a crude furan 2,5-dicarboxylic acid composition (cFDCA) by hydrogenation of a FDCA composition dissolved in a hydrogenation solvent such as water, and hydrogenating under mild conditions, such as at a temperature within a range of 130° C. to 225° C. by contacting the solvated FDCA composition with hydrogen in the presence of a hydrogenation catalyst under a hydrogen partial pressure within a range of 10 psi to 900 psi.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: April 7, 2020
    Assignee: Eastman Chemical Company
    Inventors: Mesfin Ejerssa Janka, Kenny Randolph Parker, Ashfaq Shahanawaz Shaikh, Lee Reynolds Partin, Charles Edwan Sumner, Shane Kipley Kirk
  • Oxidation process to produce 5 methyl 5-methylfuran-2-carboxylate (MMFC)
    Patent number: 10544118
    Abstract: Disclosed herein is a very efficient method to make 5-(alkoxycarbonyl)furan-2-carboxylic acids (ACFC) from feedstocks comprised of furoates. When a feedstock comprised of methyl 5-methylfuran-2-carboxylate (MMFC) is used a product comprised of (5-(methoxycarbonyl)furan-2-carboxylic acid (MCFC) is obtained in high yield.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: January 28, 2020
    Assignee: Eastman Chemical Company
    Inventor: Mesfin Ejerssa Janka
  • Production of purified dialkyl-furan-2,5-dicarboxylate (DAFD) in a retrofitted DMT plant
    Patent number: 10526301
    Abstract: Disclosed is a process to produce a purified vapor comprising dialkyl-furan-2,5-dicarboxylate (DAFD). Furan-2,5-dicarboxylic acid (FDCA) and an alcohol in an esterification zone to generate a crude diester stream containing dialkyl furan dicarboxylate (DAFD), unreacted alcohol, 5-(alkoxycarbonyl)furan-2-carboxylic acid (ACFC), and alkyl furan-2-carboxylate (AFC). The esterification zone comprises at least one reactor that has been previously used in an DMT process.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: January 7, 2020
    Assignee: Eastman Chemical Company
    Inventors: Kevin John Fontenot, Mesfin Ejerssa Janka, Kenny Randolph Parker, Ashfaq Shahanawaz Shaikh
  • PRODUCTION OF PURIFIED DIALKYL-FURAN-2,5-DICARBOXYLATE (DAFD) IN A RETROFITTED DMT PLANT
    Publication number: 20200002301
    Abstract: Disclosed is a process to produce a purified vapor comprising dialkyl-furan-2,5-dicarboxylate (DAFD). Furan-2,5-dicarboxylic acid (FDCA) and an alcohol in an esterification zone to generate a crude diester stream containing dialkyl furan dicarboxylate (DAFD), unreacted alcohol, 5-(alkoxycarbonyl)furan-2-carboxylic acid (ACFC), and alkyl furan-2-carboxylate (AFC). The esterification zone comprises at least one reactor that has been previously used in an DMT process.
    Type: Application
    Filed: September 6, 2019
    Publication date: January 2, 2020
    Applicant: Eastman Chemical Company
    Inventors: Kevin John Fontenot, Mesfin Ejerssa Janka, Kenny Randolph Parker, Ashfaq Shahanawaz Shaikh
  • OXIDATION PROCESS TO PRODUCE 5-(ALKOXYCARBONYL)FURAN-2-CARBOXYLIC ACIDS (ACFC)
    Publication number: 20190389825
    Abstract: Disclosed herein is a very efficient method to make 5-(alkoxycarbonyl)furan-2-carboxylic acids (ACFC) from feedstocks comprised of furoates. When a feedstock comprised of methyl 5-methylfuran-2-carboxylate (MMFC) is used a product comprised of (5-(methoxycarbonyl)furan-2-carboxylic acid (MCFC) is obtained in high yield.
    Type: Application
    Filed: June 4, 2019
    Publication date: December 26, 2019
    Applicant: Eastman Chemical Company
    Inventor: Mesfin Ejerssa Janka
  • PROCESS FOR PRODUCING 5-(ALKOXYCARBONYL)FURAN-2-CARBOXYLIC ACIDS AND COMPOSITIONS CONTAINING SAME
    Publication number: 20190389846
    Abstract: A process for preparing 5-(alkoxycarbonyl)furan-2-carboxylic acids (ACFC) by oxidizing various furoates in the presence of a catalyst containing cobalt, manganese, and bromine, and a solvent. The process can produce ACFC with high purity and low color, and in high yield.
    Type: Application
    Filed: September 5, 2019
    Publication date: December 26, 2019
    Applicant: Eastman Chemical Company
    Inventor: Mesfin Ejerssa Janka
  • OXIDATION PROCESS TO PRODUCE 5-(ALKOXYCARBONYL)FURAN-2-CARBOXYLIC ACIDS (ACFC)
    Publication number: 20190389824
    Abstract: Disclosed herein is a very efficient method to make 5-(alkoxycarbonyl)furan-2-carboxylic acids (ACFC) from feedstocks comprised of furoates. When a feedstock comprised of methyl 5-methylfuran-2-carboxylate (MMFC) is used a product comprised of (5-(methoxycarbonyl)furan-2-carboxylic acid (MCFC) is obtained in high yield.
    Type: Application
    Filed: June 4, 2019
    Publication date: December 26, 2019
    Applicant: Eastman Chemical Company
    Inventor: Mesfin Ejerssa Janka
  • PROCESS FOR PRODUCING 5-(ALKOXYCARBONYL)FURAN-2-CARBOXYLIC ACIDS AND COMPOSITIONS CONTAINING SAME
    Publication number: 20190389820
    Abstract: A process for preparing 5-(alkoxycarbonyl)furan-2-carboxylic acids (ACFC) by oxidizing various furoates in the presence of a catalyst containing cobalt, manganese, and bromine, and a solvent. The process can produce ACFC with high purity and low color, and in high yield.
    Type: Application
    Filed: September 5, 2019
    Publication date: December 26, 2019
    Applicant: Eastman Chemical Company
    Inventor: Mesfin Ejerssa Janka
  • OXIDATION PROCESS TO PRODUCE 5-(ALKOXYCARBONYL)FURAN-2-CARBOXYLIC ACIDS (ACFC)
    Publication number: 20190389823
    Abstract: Disclosed herein is a very efficient method to make 5-(alkoxycarbonyl)furan-2-carboxylic acids (ACFC) from feedstocks comprised of furoates. When a feedstock comprised of methyl 5-methylfuran-2-carboxylate (MMFC) is used a product comprised of (5-(methoxycarbonyl)furan-2-carboxylic acid (MCFC) is obtained in high yield.
    Type: Application
    Filed: June 4, 2019
    Publication date: December 26, 2019
    Applicant: Eastman Chemical Company
    Inventor: Mesfin Ejerssa Janka
  • OXIDATION PROCESS TO PRODUCE 5 METHYL 5-METHYLFURAN-2-CARBOXYLATE (MMFC)
    Publication number: 20190390004
    Abstract: Disclosed herein is a very efficient method to make 5-(alkoxycarbonyl)furan-2-carboxylic acids (ACFC) from feedstocks comprised of furoates. When a feedstock comprised of methyl 5-methylfuran-2-carboxylate (MMFC) is used a product comprised of (5-(methoxycarbonyl)furan-2-carboxylic acid (MCFC) is obtained in high yield.
    Type: Application
    Filed: June 4, 2019
    Publication date: December 26, 2019
    Applicant: Eastman Chemical Company
    Inventor: Mesfin Ejerssa Janka
  • OXIDATION PROCESS TO PRODUCE 5 METHYL 5-METHYLFURAN-2-CARBOXYLATE (MMFC)
    Publication number: 20190389821
    Abstract: Disclosed herein is a very efficient method to make 5-(alkoxycarbonyl)furan-2-carboxylic acids (ACFC) from feedstocks comprised of furoates. When a feedstock comprised of methyl 5-methylfuran-2-carboxylate (MMFC) is used a product comprised of (5-(methoxycarbonyl)furan-2-carboxylic acid (MCFC) is obtained in high yield.
    Type: Application
    Filed: June 4, 2019
    Publication date: December 26, 2019
    Applicant: Eastman Chemical Company
    Inventor: Mesfin Ejerssa Janka
  • OXIDATION PROCESS TO PRODUCE 5-(ALKOXYCARBONYL)FURAN-2-CARBOXYLIC ACIDS (ACFC)
    Publication number: 20190389822
    Abstract: Disclosed herein is a very efficient method to make 5-(alkoxycarbonyl)furan-2-carboxylic acids (ACFC) from feedstocks comprised of furoates. When a feedstock comprised of methyl 5-methylfuran-2-carboxylate (MMFC) is used a product comprised of (5-(methoxycarbonyl)furan-2-carboxylic acid (MCFC) is obtained in high yield.
    Type: Application
    Filed: June 4, 2019
    Publication date: December 26, 2019
    Applicant: Eastman Chemical Company
    Inventor: Mesfin Ejerssa Janka