Patents by Inventor Rolf Harten

Rolf Harten 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).

  • Patent number: 4496675
    Abstract: The invention relates to aqueous dispersions based on a polyurethane synthetic resin which has been obtained by reacting a hydroxyl-containing unsaturated polyester with a diisocyanate and reacting the product with a dihydroxycarboxylic acid, dihydroxysulfonic acid, diaminocarboxylic acid or diaminosulfonic acid, neutralizing the intermediate product with a tertiary amine and transferring it into an aqueous phase, and then reacting the terminal isocyanate groups with a primary and/or secondary diamine, as a chain-lengthening agent. The dispersions contain hydrolyzed shellac as second binder component. They produce coatings having excellent solvent resistance and excellent adhesion, even to difficult substrates.
    Type: Grant
    Filed: August 18, 1983
    Date of Patent: January 29, 1985
    Assignee: BASF Farben & Fasern AG
    Inventors: Hans-Dieter Hille, Rolf Harten