Patents by Inventor Daniel A. Cornforth

Daniel A. Cornforth 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).

  • Water dispersible polyamine-epoxy adduct and epoxy coating composition
    Patent number: 5246984
    Abstract: This invention relates to a water compatible polyamine-epoxy adduct formed by the reaction of a polyamine with a mixture of a monoepoxide and polyepoxides, the monoepoxide being added in an amount to react with about 10 to 50% of the primary amino groups in said polyamine and the polyepoxides being added in an amount to react with from about 35 to 65% of the remaining primary amino groups.This invention also contemplates a water dispersible blend resin as an amine salt and comprises a water compatible polyamine-epoxy adduct and a resin compatible polyamine-epoxy adduct wherein the water compatible polyamine-epoxy adduct is as described above and the resin compatible polyamine-epoxy adduct is formed by reacting a polyamine with an aromatic monoepoxide, said aromatic monoepoxide reacted in an amount to provide from about 0.4 to 1 equivalents epoxide per primary amino group.
    Type: Grant
    Filed: June 3, 1992
    Date of Patent: September 21, 1993
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Stuart P. Darwen, Daniel A. Cornforth