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).

  • Publication number: 20190337914
    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: May 4, 2018
    Publication date: November 7, 2019
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventors: Kenny Raldolph Parker, Mesfin Ejerssa Janka
  • Patent number: 10421736
    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: March 20, 2018
    Date of Patent: September 24, 2019
    Assignee: Eastman Chemical Company
    Inventors: Kevin John Fontenot, Mesfin Ejerssa Janka, Kenny Randolph Parker, Ashfaq Shahanawaz Shaikh
  • Patent number: 10351583
    Abstract: Ligands for use with catalyst compositions used in hydroformylation reactions are described herein. The ligands are used with various octofluorotoluene or hydrocarbon solvents and achieve an increase in isoselectivity with an increase in temperature, an increase in TON with an increase in temperature, and/or will show isoselectivity that is surprisingly high in comparison to the hydroformylation reactions using common solvents.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: July 16, 2019
    Assignee: Eastman Chemical Company
    Inventors: Leo Iu, Matthew Clarke, Kevin John Fontenot, Mesfin Ejerssa Janka
  • Patent number: 10350584
    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: April 12, 2016
    Date of Patent: July 16, 2019
    Assignee: Eastman Chemical Company
    Inventors: Kenny Randolph Parker, Mesfin Ejerssa Janka, Ashfaq Shahanawaz Shaikh, Lee Reynolds Partin
  • Patent number: 10344011
    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: May 4, 2018
    Date of Patent: July 9, 2019
    Assignee: Eastman Chemical Company
    Inventors: Kenny Raldolph Parker, Mesfin Ejerssa Janka
  • Publication number: 20190161508
    Abstract: Ligands for use with catalyst compositions used in hydroformylation reactions are described herein. The ligands are used with various octofluorotoluene or hydrocarbon solvents and achieve an increase in isoselectivity with an increase in temperature, an increase in TON with an increase in temperature, and/or will show isoselectivity that is surprisingly high in comparison to the hydroformylation reactions using common solvents.
    Type: Application
    Filed: October 29, 2018
    Publication date: May 30, 2019
    Applicant: Eastman Chemical Company
    Inventors: Leo Iu, Matthew Clarke, Kevin John Fontenot, Mesfin Ejerssa Janka
  • Publication number: 20190023676
    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: January 19, 2018
    Publication date: January 24, 2019
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventor: MESFIN EJERSSA JANKA
  • Publication number: 20190023838
    Abstract: Disclosed is a process for the manufacture of a composition comprising PEF; wherein said process polymerizes FDCA and a diol in a polymerization reactor; wherein the polymerization reaction occurs in at least one reactor previously used in a polyester plant to produce said composition comprising PEF.
    Type: Application
    Filed: March 20, 2018
    Publication date: January 24, 2019
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventors: MESFIN EJERSSA JANKA, KEVIN JOHN FONTENOT, KENNY RANDOLPH PARKER
  • Publication number: 20190023675
    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: January 19, 2018
    Publication date: January 24, 2019
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventor: MESFIN EJERSSA JANKA
  • Publication number: 20190023677
    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: March 20, 2018
    Publication date: January 24, 2019
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventors: KEVIN JOHN FONTENOT, Mesfin Ejerssa Janka, Kenny Randolph Parker, Ashfaq Shahanawaz Shaikh
  • Publication number: 20190023837
    Abstract: Disclosed is a process for the manufacture of a composition comprising PEF; wherein said process polymerizes FDCA and a diol in a polymerization reactor; wherein the polymerization reaction occurs in at least one reactor previously used in a polyester plant to produce said composition comprising PEF.
    Type: Application
    Filed: March 20, 2018
    Publication date: January 24, 2019
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventors: MESFIN EJERSSA JANKA, KEVIN JOHN FONTENOT, KENNY RANDOLPH PARKER
  • Patent number: 10183961
    Abstract: Ligands for use with catalyst compositions used in hydroformylation reactions are described herein. The ligands are used with various ester solvents and achieve an increase in isoselectivity with an increase in temperature, an increase in TON with an increase in temperature, and/or will show isoselectivity that is surprisingly high in comparison to the hydroformylation reactions using common solvents.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: January 22, 2019
    Assignee: Eastman Chemical Company
    Inventors: Leo Iu, Matthew Clarke, Mesfin Ejerssa Janka
  • Patent number: 10144751
    Abstract: Ligands for use with catalyst compositions used in hydroformylation reactions are described herein. The ligands are used with various octofluorotoluene or hydrocarbon solvents and achieve an increase in isoselectivity with an increase in temperature, an increase in TON with an increase in temperature, and/or will show isoselectivity that is surprisingly high in comparison to the hydroformylation reactions using common solvents.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: December 4, 2018
    Assignee: Eastman Chemical Company
    Inventors: Leo Iu, Matthew Clarke, Kevin John Fontenot, Mesfin Ejerssa Janka
  • Publication number: 20180290994
    Abstract: Disclosed is a process to produce a dry purified carboxylic acid product comprising furan-2,5-dicarboxylic acid (FDCA). The process comprises oxidizing at least one oxidizable compound selected from the following group: 5-(hydroxymethyl)furfural (5-HMF), 5-HMF esters (5-R(CO)OCH2-furfural where R=alkyl, cycloalkyl and aryl), 5-HMF ethers (5-R?OCH2-furfural, where R?=alkyl, cycloalkyl and aryl), 5-alkyl furfurals (5-R?-furfural, where R?=alkyl, cycloalkyl and aryl), mixed feed-stocks of 5-HMF and 5-HMF esters and mixed feed-stocks of 5-HMF and 5-HMF ethers and mixed feed-stocks of 5-HMF and 5-alkyl furfurals to generate a crude carboxylic acid slurry comprising FDCA, removing impurities from a crude carboxylic acid slurry in a liquid displacement zone to form a low impurity slurry stream.
    Type: Application
    Filed: June 11, 2018
    Publication date: October 11, 2018
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventors: MESFIN EJERSSA JANKA, KENNY RANDOLPH PARKER, PAULA MOODY, ASHFAQ SHAHANAWAZ SHAIKH, LEE REYNOLDS PARTIN, BRADFORD RUSSELL BOWERS, MICHAEL CHARLES MORROW
  • Publication number: 20180215725
    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: Application
    Filed: March 29, 2018
    Publication date: August 2, 2018
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventors: MESFIN EJERSSA JANKA, Kenny Randolph Parker, Ashfaq Shahanawaz Shaikh, Lee Reynolds Partin, Charles Edwan Sumner, Shane Kipley Kirk
  • Publication number: 20180201596
    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: March 15, 2018
    Publication date: July 19, 2018
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventors: MESFIN EJERSSA JANKA, KENNY RANDOLPH PARKER, ASHFAQ SHAHANAWAZ SHAIKH, LEE REYNOLDS PARTIN
  • Patent number: 10011579
    Abstract: Disclosed is a process to produce a dry purified carboxylic acid product comprising furan-2,5-dicarboxylic acid (FDCA). The process comprises oxidizing at least one oxidizable compound selected from the following group: 5-(hydroxymethyl)furfural (5-HMF), 5-HMF esters (5-R(CO)OCH2-furfural where R is alkyl, cycloalkyl, or aryl), 5-HMF ethers (5-R?OCH2-furfural where R? is alkyl, cycloalkyl, or aryl), 5-alkyl furfurals (5-R?-furfural where R? is alkyl, cycloalkyl, or aryl), mixed feedstocks of 5-HMF and 5-HMF esters, mixed feedstocks of 5-HMF and 5-HMF ethers, and mixed feedstocks of 5-HMF and 5-alkyl furfurals to generate a crude carboxylic acid slurry comprising FDCA.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: July 3, 2018
    Assignee: Eastman Chemical Company
    Inventors: Mesfin Ejerssa Janka, Kenny Randolph Parker, Paula Moody, Ashfaq Shahanawaz Shaikh, Lee Reynolds Partin, Bradford Russell Bowers, Michael Charles Morrow
  • Patent number: 9988329
    Abstract: A transfer-hydrogenation process for preparing a carbonyl compound and an alcohol compound comprises the steps of (a) contacting a first carbonyl compound with a first alcohol compound in the presence of a transfer-hydrogenation catalyst in a first reaction zone at conditions effective to form a second carbonyl compound from the first alcohol compound and a second alcohol compound from the first carbonyl compound, and (b) removing the second carbonyl compound from the first reaction zone during step (a). The first carbonyl compound is a saturated aldehyde or ketone, or an ?,?-unsaturated aldehyde or ketone. The first alcohol compound is a primary or secondary alcohol. The second alcohol compound is ?,?-saturated. The transfer-hydrogenation catalyst includes a Group 8 to 11 metal. This process is useful for preparing and higher value alcohols, such as butanol or 2-ethylhexanol, from the corresponding carbonyl compounds by engaging lower alcohol (C2-C4) feedstocks instead of hydrogen (H2).
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: June 5, 2018
    Assignee: Eastman Chemical Company
    Inventors: Mesfin Ejerssa Janka, Robert Thomas Hembre, Scott Donald Barnicki, Robert Scott Huss, Xiaopeng Shan, Stephanie Rollins Testerman, Timothy Alan Upshaw, Dewey Wayne Fuller, Jr.
  • Patent number: 9944615
    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. A product FDCA composition is produced having a low amount of tetrahydrofuran dicarboxylic acid, a low b*, and a low amount of 5-formyl furan-2-carboxylic acid (FFCA).
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: April 17, 2018
    Assignee: EASTMAN CHEMICAL COMPANY
    Inventors: Mesfin Ejerssa Janka, Kenny Randolph Parker, Ashfaq Shahanawaz Shaikh, Lee Reynolds Partin, Charles Edwan Sumner, Jr., Shane Kipley Kirk
  • Publication number: 20170260154
    Abstract: Disclosed is a process to produce a dry purified carboxylic acid product comprising furan-2,5-dicarboxylic acid (FDCA). The process comprises oxidizing at least one oxidizable compound selected from the following group: 5-(hydroxymethyl)furfural (5-HMF), 5-HMF esters (5-R(CO)OCH2-furfural where R=alkyl, cycloalkyl and aryl), 5-HMF ethers (5-R?OCH2-furfural, where R?=alkyl, cycloalkyl and aryl), 5-alkyl furfurals (5-R?-furfural, where R?=alkyl, cycloalkyl and aryl), mixed feed-stocks of 5-HMF and 5-HMF esters and mixed feed-stocks of 5-HMF and 5-HMF ethers and mixed feed-stocks of 5-HMF and 5-alkyl furfurals to generate a crude carboxylic acid slurry comprising FDCA, removing impurities from a crude carboxylic acid slurry in a liquid displacement zone to form a low impurity slurry stream. The low impurity slurry stream is further treated in a secondary oxidation zone to produce a secondary oxidation slurry stream which is routed to a crystallization zone to form a crystallized slurry stream.
    Type: Application
    Filed: May 22, 2017
    Publication date: September 14, 2017
    Applicant: Eastman Chemical Company
    Inventors: Mesfin Ejerssa JANKA, Kenny Randolph PARKER, Paula MOODY, Ashfaq Shahanawaz SHAIKH, Lee Reynolds PARTIN, Bradford Russell BOWERS, Michael Charles MORROW