Patents Represented by Attorney Karin Karet

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  • Process for making 5-methyl-N-alkyl-2-pyrrolidone from alkyl amine(s) and levulinic acid
    Patent number: 7465813
    Abstract: This invention relates to a process for producing a reaction product comprising 5-methyl-N-alkyl-2-pyrrolidone by (a) reacting levulinic acid with alkyl amine(s) and (b) hydrogenating the products of step (a) in the presence of a metal catalyst, which is optionally supported.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: December 16, 2008
    Assignee: E. I. Du Pont de Nemours + Company
    Inventor: Leo Ernest Manzer