Patents by Inventor Anthony C. Maliyackel

Anthony C. Maliyackel 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).

  • Selective C-alkylation of aniline in the presence of zeolite catalysts to para-aniline
    Patent number: 5081302
    Abstract: The selective ring-alkylation of anilines comprising providing a mixture of a lower alkanol and an aniline, exposing said mixture to a temperature of from 300.degree. C. to 500.degree. C., preferably from 350.degree. C. to 450.degree. C., in the presence of an acidic Y-type zeolite is described. The Y-type zeolites are predominantly selective to the formation of para-alkylanilines.
    Type: Grant
    Filed: April 27, 1989
    Date of Patent: January 14, 1992
    Assignee: First Chemical Corporation
    Inventors: Arthur C. Bayer, Charles U. Pittman, Jr., Lichang Wang, Earl G. Alley, Anthony C. Maliyackel
  • Selective N-alkylation of aniline in the presence of zeolite catalysts
    Patent number: 5030759
    Abstract: The selective N-alkylation of anilines comprising providing a mixture of a lower alkanol and an aniline, exposing said mixture to a temperature of from 250.degree. C. to 350.degree. C. in the presence of an acidic zeolite having a pore size of from 6 to 8 angstroms with a three-dimensional tubular shape, such as S-115 zeolite, is described. These zeolites are predominantly selective to the formation of N-alkylanilines.
    Type: Grant
    Filed: April 27, 1989
    Date of Patent: July 9, 1991
    Assignee: First Chemical Corporation
    Inventors: Arthur C. Bayer, Charles U. Pittman, Jr., Lichang Wang, Earl G. Alley, Anthony C. Maliyackel