Patents by Inventor George Graham Allen

George Graham Allen 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).

  • Rapid curing adhesive compositions comprising the reaction product of a ketone aldehyde condensation polymer and a primary aromatic amine
    Patent number: 3931110
    Abstract: This invention describes resin products having particular utility as rapid curing adhesives for wood and other materials, and processes for making the resin compositions. The reaction products are made by reacting an aldehyde condensation polymer, such as a phenol-formaldehyde condensation polymer, with a primary aromatic amine having the formula: ##SPC1##WhereX.sub.1 is --NH.sub.2 --CH.sub.2 NH.sub.2 ;X.sub.2 is --X.sub.1 --OH--alkoxy;X.sub.3 is -X.sub.1 COOH NHCOCH.sub.3 NO.sub.2 OH C.sub.1 to C.sub.5 alkyl H -halogen halogenated alkyl alkoxyX.sub.4 is C.sub.1 to C.sub.4 alkyl, --H--aryl; andA is ##EQU1## where Y.sub.1 and Y.sub.2 are hydrogen or alkyl radicals having from 1 to 3 carbon atoms and Z is an integer from 0 to 2,--SO.sub.2 ----NH----O----S---- C----S--S----N=N--, to obtain an amine-modified polymer. On blending an appropriate hardening agent with the amine-modified polymer, the composition cures very rapidly at ambient temperature.
    Type: Grant
    Filed: October 23, 1973
    Date of Patent: January 6, 1976
    Assignee: The Dow Chemical Company
    Inventors: Harlan G. Freeman, Gene F. Baxter, George Graham Allen