Patents by Inventor H. Rainer Sasse

H. Rainer Sasse 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).

  • Hardeners for epoxy resins
    Patent number: 4569971
    Abstract: Novel hardener compositions for epoxy resins comprising (a) 65 to 95% by weight of an adduct containing free amino groups of 35 to 94% by weight of at least one member of the group consisting of polyamines, polyaminoimidazolines and polyaminoamides and 5 to 30% by weight of at least one glycidyl compound, based on the total hardener composition weight, (b) 0.1 to 5% by weight at least one aliphatic or aromatic carboxylic acid and (c) 0.9 to 30% by weight of a phenol-modified aromatic hydrocarbon resin with a hydroxyl content of 0.9 to 6% and their preparation, water-emulsifable epoxy compositions containing said hardener compositions, aqueous emulsions of said epoxy resins, water compositions containing said aqueous epoxy emulsions and their uses.
    Type: Grant
    Filed: August 15, 1983
    Date of Patent: February 11, 1986
    Assignee: Rutgerswerke Aktiengesellschaft
    Inventors: H. Rainer Sasse, Karl-Hermann Conrad, Rolf Herzog, Hans Klein, Bert Meier