Patents by Inventor Matthew J. Engel

Matthew J. Engel 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).

  • Hydrogenation of aromatic amines to alicyclic amines using a lithium aluminate-based catalyst
    Patent number: 7465833
    Abstract: The present invention relates to processes for the catalytic hydrogenation of aromatic amines to their acyclic counterparts using a ruthenium catalyst on a lithium aluminate support. The hydrogenation process comprises contacting an aromatic amine with hydrogen in the presence of a ruthenium catalyst under temperature and pressure conditions suitable to effect ring hydrogenation. The process is especially useful for hydrogenating aniline to cyclohexylamine.
    Type: Grant
    Filed: September 22, 2005
    Date of Patent: December 16, 2008
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Gamini Ananda Vedage, Hao Ding, Matthew J. Engel, Eugene George Lutz, Lenore Ann Emig
  • Aminopropylation of alcohols in the presence of amide or ether solvents
    Patent number: 7399886
    Abstract: This invention relates to an improved hydrogenation process for the preparation of etheramines. In the process, cyanoethylated alcohols, i.e., the reaction product of an alcohol with (meth)acrylonitrile, are contacted with hydrogen in the presence of a sponge cobalt catalyst. The improvement in the process resides in effecting the hydrogenation process utilizing a cyanoethylated alcohol feedstock contaminated with byproduct acrylonitrile and utilizing a solvent that solubilizes byproduct (meth)acrylonitrile present in the feedstock. Specific classes of solvents employed are ethers and amides.
    Type: Grant
    Filed: September 4, 2003
    Date of Patent: July 15, 2008
    Inventors: Garnini Ananda Vedage, Eugene George Lutz, Matthew J. Engel