Patents Assigned to Badger B.V.
  • Method for separating carboxylic acids from mixtures with non-acids
    Patent number: 4576683
    Abstract: A method for separating carboxylic acids from mixtures with non-acids by an extractive distillation method using a lactam with a 5- or 6-membered ring, preferably N-methyl-2-pyrrolidone, as an extractant to extract the acids from the mixture with non-acids, followed by separating the extracted acids from the extractant by rectification.
    Type: Grant
    Filed: June 6, 1984
    Date of Patent: March 18, 1986
    Assignee: Badger B.V.
    Inventor: Lester R. Cohen