Patents by Inventor David DENTEL

David DENTEL 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).

  • Liquid-liquid extraction of DMF
    Patent number: 10899783
    Abstract: The present invention relates to a method for the chlorination of a sucrose-6-acylate to produce a 4,1?,6?-trichloro-4,1?,6?-trideoxy-galactosucrose-6-acylate wherein said method includes steps of: (i) combining the sucrose-6-acylate with a chlorinating agent in a reaction vehicle comprising a tertiary amide to afford a mixture; (ii) heating said mixture for a heating period in order to provide chlorination of sucrose-6-acylate at the 4,1? and 6? positions thereof; and (iii) quenching the product stream of (ii) to produce a 4,1?,6?-trichloro-4,1?,6?-trideoxy-galactosucrose-6-acylate; wherein before said quenching, a portion of said tertiary amide is removed by extraction into a solvent in which said tertiary amide is at least partially soluble.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: January 26, 2021
    Assignee: TATE & LYLE TECHNOLOGY LIMITED
    Inventors: David Dentel, Thomas Eilers, Edward Micinski
  • LIQUID-LIQUID EXTRACTION OF DMF
    Publication number: 20190309005
    Abstract: The present invention relates to a method for the chlorination of a sucrose-6-acylate to produce a 4,1?,6?-trichloro-4,1?,6?-trideoxy-galactosucrose-6-acylate wherein said method includes steps of: (i) combining the sucrose-6-acylate with a chlorinating agent in a reaction vehicle comprising a tertiary amide to afford a mixture; (ii) heating said mixture for a heating period in order to provide chlorination of sucrose-6-acylate at the 4, 1? and 6? positions thereof; and (iii) quenching the product stream of (ii) to produce a 4,1?,6?-trichloro-4,1?,6?-trideoxy-galactosucrose-6-acylate; wherein before said quenching, a portion of said tertiary amide is removed by extraction into a solvent in which said tertiary amide is at least partially soluble.
    Type: Application
    Filed: June 24, 2019
    Publication date: October 10, 2019
    Applicant: Tate & Lyle Technology Limited
    Inventors: David DENTEL, Thomas EILERS, Edward MICINSKI
  • Liquid-liquid extraction of DMF
    Patent number: 10370398
    Abstract: The present invention relates to a method for the chlorination of a sucrose-6-acylate to produce a 4,1?,6?-trichloro-4,1?,6?-trideoxy-galactosucrose-6-acylate wherein said method includes steps of: (i) combining the sucrose-6-acylate with a chlorinating agent in a reaction vehicle comprising a tertiary amide to afford a mixture; (ii) heating said mixture for a heating period in order to provide chlorination of sucrose-6-acylate at the 4, 1? and 6? positions thereof; and (iii) quenching the product stream of (ii) to produce a 4,1?,6?-trichloro-4,1?,6?-trideoxy-galactosucrose-6-acylate; wherein before said quenching, a portion of said tertiary amide is removed by extraction into a solvent in which said tertiary amide is at least partially soluble.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: August 6, 2019
    Assignee: TATE & LYLE TECHNOLOGY LIMITED
    Inventors: David Dentel, Thomas Eilers, Edward Micinski
  • LIQUID-LIQUID EXTRACTION OF DMF
    Publication number: 20170369518
    Abstract: The present invention relates to a method for the chlorination of a sucrose-6-acylate to produce a 4,1?,6?-trichloro-4,1?,6?-trideoxy-galactosucrose-6-acylate wherein said method includes steps of: (i) combining the sucrose-6-acylate with a chlorinating agent in a reaction vehicle comprising a tertiary amide to afford a mixture; (ii) heating said mixture for a heating period in order to provide chlorination of sucrose-6-acylate at the 4, 1? and 6? positions thereof; and (iii) quenching the product stream of (ii) to produce a 4,1?,6?-trichloro-4,1?,6?-trideoxy-galactosucrose-6-acylate; wherein before said quenching, a portion of said tertiary amide is removed by extraction into a solvent in which said tertiary amide is at least partially soluble.
    Type: Application
    Filed: June 20, 2017
    Publication date: December 28, 2017
    Applicant: Tate & Lyle Technology Limited
    Inventors: David DENTEL, Thomas EILERS, Edward MICINSKI