Patents Represented by Attorney Johanne P. Will

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  • Post manufacture process for improving the properties of lactones and substituted lactams
    Patent number: 5777131
    Abstract: This invention relates to a method for improving the properties of lactones and substituted lactams by subjecting the post-manufactured lactones and substituted lactams to an ion exchange resin. Specifically, this invention relates to a method for reducing the cationic impurities concentrations, reducing the amine concentration, and reducing the pH of post manufactured lactams.
    Type: Grant
    Filed: August 14, 1996
    Date of Patent: July 7, 1998
    Assignee: BASF Corporation
    Inventor: Marshall Evans