Patents by Inventor Werner Kubitza

Werner Kubitza 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).

  • Use of hydroxyl alkyl amines optionally containing ether groups or their salts as additives reducing resistance to the diffusion of water vapor in polyurethane-based coating compositions
    Patent number: 4305977
    Abstract: A process for improving the water vapor permeability of polyurethane coatings by incorporating a hydroxy alkyl amine, an alkoxylated amine or the salt of either with an inorganic or organic acid into the coating composition is taught. Coating compositions including this water vapor diffusion enhancing additive are also taught as is a process for coating water vapor permeable substrates.
    Type: Grant
    Filed: September 24, 1979
    Date of Patent: December 15, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Werner Kubitza, Gerhard Mennicken
  • Isocyanate mixture and its use as binder in one-component lacquers
    Patent number: 4292350
    Abstract: Isocyanate mixtures which are stable in the absence of moisture, and are curable by atmospheric moisture and which have low viscosities are obtained by mixing polyisocyanates containing biuret, allophanate or urethane bonds and functionalities in excess of 2 with monoisocyanates. These mixtures are used to coat substrates and the exposure of the coated substrates to atmospheric moisture results in cured coatings.
    Type: Grant
    Filed: October 12, 1979
    Date of Patent: September 29, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Werner Kubitza, Gerhard Mennicken, Josef Pedain