Patents by Inventor Alan E. Ardis

Alan E. Ardis 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).

  • Process for producing a purified 3,4-toluenediamine product and a mixture of 4- and 5-methylbenzotriazoles from a mixture of ortho-toluenediamine isomers
    Patent number: 4158660
    Abstract: A process for producing a purified 3,4-toluenediamine product and a mixture of 4- and 5-methylbenzotriazoles from a mixture of ortho-toluenediamine isomers, the process having the steps of(a) dissolving a mixture of ortho-toluenediamine isomers in water to form an aqueous solution;(b) cooling the aqueous solution to a temperature whereby crystals of a purified 3,4-toluenediamine product are formed in an aqueous mother liquor;(c) separating the purified 3,4-toluenediamine product crystals from the aqueous mother liquor;(d) reacting the aqueous mother liquor with a diazotization agent selected from sodium nitrite, potassium nitrite, nitrous acid and nitrous anhydride in the presence of acetic acid to form a reaction mixture containing a mixture of 4- and 5-methylbenzotriazoles; and(e) recovering the mixture of 4- and 5-methylbenzotriazoles from the reaction mixture.
    Type: Grant
    Filed: February 24, 1978
    Date of Patent: June 19, 1979
    Assignee: Olin Corporation
    Inventors: David F. Gavin, Alan E. Ardis, Lawrence E. Katz, John D. Schellberg
  • Method for drying coatings
    Patent number: 4021261
    Abstract: Superior drying is obtained for coating compositions containing drying or semi-drying oils by incorporating therein an effective amount of 5-methyl-1,10-phenanthroline.
    Type: Grant
    Filed: January 13, 1976
    Date of Patent: May 3, 1977
    Assignee: Olin Corporation
    Inventors: Alan E. Ardis, Lawrence E. Katz
  • Process for preparing 3-hydroxyoxetane
    Patent number: 4009182
    Abstract: Hydroxyoxetanes of the formula ##STR1## wherein R and R' are each selected from the group consisting of hydrogen and alkyl of from 1 to 5 carbon atoms.
    Type: Grant
    Filed: August 22, 1968
    Date of Patent: February 22, 1977
    Assignee: Olin Corporation
    Inventors: Alan E. Ardis, John A. Wojtowicz
  • Method for preserving functional fluids and liquid hydrocarbon fuels with selected 1,10-phenanthrolines
    Patent number: 3951833
    Abstract: A method for preserving certain organic fluids is provided wherein an inhibitory amount of a selected 1,10-phenanthroline is incorporated in such fluids as a biocide.
    Type: Grant
    Filed: February 27, 1975
    Date of Patent: April 20, 1976
    Assignee: Olin Corporation
    Inventors: Robert H. Juda, Gene A. Hyde, Alan E. Ardis