Patents by Inventor James Larry Potter

James Larry Potter 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).

  • Polymers from N-(2-hydroxyethyl)aziridines
    Patent number: 4070354
    Abstract: Aziridinyl-terminated polymers containing the recurring unit ##STR1## wherein R.sub.1 is hydrogen or methyl and R.sub.2 is hydrogen or a side chain of like structure, are prepared by warming N-(2-hydroxyethyl)- or N-(2-hydroxypropyl)ethylenimine or -propyleneimine. Generally, the reaction is conducted in the presence of an alkali metal and at least trace amounts of water. The polymers are useful as curing agents for epoxy resins.
    Type: Grant
    Filed: September 28, 1972
    Date of Patent: January 24, 1978
    Assignee: The Dow Chemical Company
    Inventors: Clarence R. Dick, James Larry Potter
  • Method for converting alkenoic acid copolymer latexes into water solutions
    Patent number: 4026932
    Abstract: A method for the preparation of aqueous solutions of anionic polyelectrolytes by combining a stream of a high solid content alkenoic acid-alkyl acrylate latex with a stream of aqueous alkali metal hydroxide, mixing the combined streams under low shear conditions and heating the mixture to produce a polyelectrolyte solution.The use of these steps avoids the formation of high viscosity mixtures or rubber masses which are difficult, if not impossible, to further process into the desired polyelectrolyte solution.
    Type: Grant
    Filed: December 11, 1975
    Date of Patent: May 31, 1977
    Assignee: The Dow Chemical Company
    Inventors: James Richard Gross, James Larry Potter, Frederick Bernhard Kassell