Patents by Inventor David G. Parker

David G. Parker 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).

  • Production of aromatic hydrocarbons
    Patent number: 4238630
    Abstract: Alkylation of aromatic hydrocarbons, especially toluene methylation, is carried out in the presence of a catalyst comprising an aluminosilicate zeolite of the ZSM-5 type in which some or all of the protons of the zeolite have been replaced by monovalent cations. Preferably, the replacement cations are sodium ions, the catalyst preferably containing more than 2% by weight of sodium.
    Type: Grant
    Filed: April 9, 1979
    Date of Patent: December 9, 1980
    Assignee: Imperial Chemical Industries Limited
    Inventor: David G. Parker
  • Manufacture of amines from alcohols with zeolite FU-1 catalysts
    Patent number: 4205012
    Abstract: Manufacture of amines by reacting alcohols with ammonia in the presence of a catalyst comprising zeolite FU-1 in which some or all of the protons of the zeolite have been replaced by monovalent cations, for example sodium. The process is especially useful for the manufacture of methylamines in which the proportions of monomethylamine and dimethylamine obtained are selectively increased in preference to trimethylamine.
    Type: Grant
    Filed: April 19, 1979
    Date of Patent: May 27, 1980
    Assignee: Imperial Chemical Industries Limited
    Inventors: David G. Parker, Alan J. Tompsett
  • Manufacture of amines from alcohols with zeolite FU-1 catalysts
    Patent number: 4191709
    Abstract: A process for the manufacture of an amine by reacting an alcohol, for example methanol, with ammonia at an elevated temperature in the presence of the hydrogen form of zeolite FU-1 or zeolite FU-1 in which some or all of the protons have been replaced by bivalent or trivalent cations.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: March 4, 1980
    Assignee: Imperial Chemical Industries Limited
    Inventors: David G. Parker, Alan J. Tompsett