Patents by Inventor John M. Motes

John M. Motes 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).

  • Preparation of hydroxyalkylpiperazinones by reacting a 2,3-dihydroxy-1,4-dioxane with a hydroalkyldiamine
    Patent number: 4880934
    Abstract: A process for the preparation of 4-(2-hydroxyalkyl)-2-piperazinones and their substituted derivatives comprising reacting an N-hydroxyalkylalkylenediamine, e.g. 2-[(2-aminoethyl)amino]ethanol, or a hydrocarbyl substituted derivative thereof with an .alpha.,.beta.-dicarbonyl compound, e.g. glyoxal, an alkyl-substituted derivative of glyoxal or a glyoxal equivalent. Certain hexahydro-4-(hydroxyalkyl)-2H-1,4-diazepin-2-ones have been made which are new compounds.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: November 14, 1989
    Assignee: The Dow Chemical Company
    Inventors: Duane S. Treybig, John M. Motes
  • Preparation of hydroxyalkylpiperazinones by reacting glyoxal with hydroxyalkyldiamines
    Patent number: 4814443
    Abstract: A process for the preparation of 4-(2-hydroxyalkyl)-2-piperazinones and their substituted derivatives comprising reacting an N-hydroxyalkylalkylenediamine, e.g.2-[(2-aminoethyl)amino]ethanol, or a hydrocarbyl substituted derivative thereof with an .alpha.,.beta.-dicarbonyl compound, e.g. glyoxal, an alkyl-substituted derivative of glyoxal or a glyoxal equivalent. Certain hexahydro-4-(hydroxyalkyl)-2H-1,4-diazepin-2-ones have been made which are new compounds.
    Type: Grant
    Filed: August 13, 1987
    Date of Patent: March 21, 1989
    Assignee: The Dow Chemical Company
    Inventors: Duane S. Treybig, John M. Motes
  • Sulfur dioxide removal from gas streams using hydroxyalkyl substituted piperazinones
    Patent number: 4783327
    Abstract: A method of removing SO.sub.2 from a gas stream containing the same by absorbing the SO.sub.2 in an aqueous solution containing a 4-(2-hydroxyalkyl)-2-piperazinone compound or an alkyl or aryl substituted derivative thereof. These compounds provide an absorbent solution which is less subject to loss during the regeneration step and yet effectively remove the SO.sub.2 from the gas stream without interference from other associated gases.
    Type: Grant
    Filed: August 13, 1987
    Date of Patent: November 8, 1988
    Assignee: The Dow Chemical Company
    Inventors: Duane S. Treybig, James L. Potter, Mark B. Jones, John M. Motes
  • Aziridine complexes isomerize to form chelated dimers
    Patent number: 4170591
    Abstract: Metal salt complexes of aziridine and 2-alkylaziridines in solution isomerize at temperatures between 20.degree.-70.degree. C. to form aziridine dimer chelates. The chelates are biologically active compounds and are chemical intermediates in the preparation of free aziridine dimers.
    Type: Grant
    Filed: May 9, 1973
    Date of Patent: October 9, 1979
    Assignee: The Dow Chemical Company
    Inventor: John M. Motes
  • Stabilization of polyisocyanates against discoloration
    Patent number: 4064157
    Abstract: Polyisocyanates are stabilized against discoloration by the addition of certain hindered phenols such as o,o-di-n-octadecyl-3,5-di-tert-butyl-4-hydroxyl benzyl phosphonate.
    Type: Grant
    Filed: March 29, 1976
    Date of Patent: December 20, 1977
    Assignee: The Dow Chemical Company
    Inventors: John L. Nafziger, John M. Motes