Patents Assigned to Vianova Resins GmbH & Co. KG
  • Aqueous coating compositions comprising curing agents which can be dispersed without solvent
    Patent number: 5977247
    Abstract: An aqueous coating composition useful as electro-deposition coatings includes (A') an aqueous dispersion of a resin (A) having functional groups which are reactive toward isocyanate, and (B') an aqueous, solvent-free dispersion of a solubilized masked polyisocyanate (B). The coating is cured by baking at a temperature which regenerates the isocyanate groups.
    Type: Grant
    Filed: October 3, 1997
    Date of Patent: November 2, 1999
    Assignee: Vianova Resins GmbH & Co. KG
    Inventors: Markus A. Schafheutle, Achim Voelker, Susanne Wehner, Gerd Walz