Patents by Inventor Manfred Dangschaft

Manfred Dangschaft 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).

  • Process for the preparation of binder dispersions capable of being cathodically deposited using crosslinking agents based on polyisocyantes blocked by hydroxyl groups
    Patent number: 5086090
    Abstract: The invention relates to a process for the preparation of aqueous dispersions to be further processed to electrocoating paints with baking temperatures below 160.degree. C. and baking times.ltoreq.30 minutes, which dispersions contain modified epoxide-amine adducts as binders and polyisocyanates blocked by hydroxyl groups as cross-linking agents.In this process polyepoxides and compounds containing one or more, preferably 2, hydroxyl groups per molecule are reacted at elevated temperatures in the presence of catalysts to furnish epoxide-containing intermediates.A solvent or a mixture of solvents is then added with external cooling ahd the solution is boiled under reflux, if necessary in vacuo, until the temperature of the solution drops to 95.degree. C. to 20.degree. C.
    Type: Grant
    Filed: June 13, 1990
    Date of Patent: February 4, 1992
    Assignee: BASF Lacke & Farben AG
    Inventors: Michael Geist, Klaus Cibura, Walter Jouck, Gunther Ott, Jurgen Sadlowski, Manfred Dangschaft, Manfred Reimann