Patents by Inventor Walter Buttgens

Walter Buttgens 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).

  • Reactive fire-protective formulation for rendering polyurethane rigid foam materials flame-resistant and process for preparing same
    Patent number: 4717509
    Abstract: Disclosed are a reactive fire-protective formulation containing halogen and phosphorous compounds for polyurethane rigid foam materials and a process for the preparation thereof. The formulation consists of a liquid homogeneous mixture of a polyether-polyol based on an aromatic amine or sorbitol or tetrol or a mixture thereof, a neopentane containing bromo and hydroxy groups and a compound containing phosphorus and nitrogen and is particularly suitable for the preparation of preformulated polyurethane systems (component A).
    Type: Grant
    Filed: April 6, 1987
    Date of Patent: January 5, 1988
    Assignee: Chemische Fabrik Kalk
    Inventors: Walter Buttgens, Utto Kerscher, Ernst Neukirchen