Patents Represented by Attorney Janice D. Dowdall

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  • Novolak compounds useful as adhesion promoters for epoxy resins
    Patent number: 5859153
    Abstract: A composition useful as a powder coating comprises an epoxy resin and a novolak compound or resin having a structure obtained from the reaction of a substituted phenol such as cresol and an aldehyde to form a substituted bis(hydroxymethyl) phenol intermediate which is then reacted with a polyhydroxyphenol containing adjacent hydroxyl groups such as catechol to yield a polyhydroxyphenol-endcapped novolak compound or resin.
    Type: Grant
    Filed: June 21, 1996
    Date of Patent: January 12, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Alan R. Kirk, Allen L. Griggs