Patents by Inventor Gaspar Zsolt

Gaspar Zsolt 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 separating N,N-dialkylbisaminoalkylether from mixtures comprising N,N-dialkylbisaminoalkylbisaminoalkylether and at least one of N,N,N?-trialkylbisaminoalkylether and N,N,N?,N?-tetraalkylbisaminoalkylether
    Patent number: 8658831
    Abstract: According to the present invention, a method for separating a primary amine being an N,N-dialkylbisaminoalkylether, from mixtures comprising said primary amine and at least one of a secondary amine being an N,N,N?-trialkylbisaminoalkylether and a tertiary amine being an N,N,N?,N?-tetraalkylbisaminoalkylether, comprising the steps: (?) joining said mixture and at least one of a ketone and an aldehyde for reacting said primary amine with said at least one of a ketone and an aldehyde, thereby providing a primary amine based imine by a Schiff base reaction; (?) separating the primary amine based imine from said at least one of the secondary or tertiary amine; and (?) recovering the primary amine from its primary amine based imine by hydrolysis of the primary amine based imine.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: February 25, 2014
    Assignees: Huntsman International LLC, Huntsman Corporation Hungary ZRT
    Inventors: Humbert Heiko Heinrich, Gaspar Zsolt, Felber Gabor, Gaspar Attila, Grigsby Robert Alison, Jr., Kordas Imre, Vanderstraeten Petra Emma