Patents by Inventor Lee Reynolds Parton

Lee Reynolds Parton 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).

  • Method for producing purified dialkyl-furan-2,5-dicarboxylate by physical separation and solid liquid separation
    Patent number: 9169229
    Abstract: A process to produce a purified dimethyl-furan-2,5-dicarboxylate (DMFD) by feeding furan dicarboxylic acid and methanol to an esterification zone to generate a crude diester composition, and purifying the crude diester composition with a physical separation process followed by crystallization, solid liquid separation, and optionally drying to produce a purified DMFD composition. A portion of the stream generated by solid liquid separation can be dissolved and subjected to crystallization and solid liquid separation repeatedly. The process is useful to produce a purified DMFD composition having a low b*, at least 98 wt. % DAFD solids, and a low concentration of 5-(methoxycarbonyl)furan-2-carboxylic acid (MCFC) and methyl 5-formylfuran-2-carboxylate (MFFC).
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: October 27, 2015
    Assignee: Eastman Chemical Company
    Inventors: Kenny Randolph Parker, Ashfaq Shaikh, Lee Reynolds Parton, Mesfin Ejerssa Janka