Patents by Inventor Utto Kerscher

Utto Kerscher 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
  • Flameproofing of thermoplastics, thermosetting polymers, textiles, and other flammable materials with antimony oxy compounds
    Patent number: 4464501
    Abstract: Flameproofed thermoplastic synthetic resins, elastomeric synthetic resins, rubber-type synthetic resins, thermosetting synthetic resins, and elastomers have both halogen- and antimony-containing flameproofing components, the latter having the formula Sb.sub.4 O.sub.5 X.sub.y, wherein X is chlorine, bromine, or sulfate and y is 2 or 1.
    Type: Grant
    Filed: August 27, 1981
    Date of Patent: August 7, 1984
    Assignee: Chemische Fabrik Kalk GmbH
    Inventors: Rainer Taubert, Utto Kerscher
  • Flameproofing additives for thermoplastic synthetic resins
    Patent number: 4301058
    Abstract: A flameproofing additive for thermoplastic synthetic resin compositions comprises 60-30 wt. % of a lower melting, flame retardant organic bromine compound which melts at 80.degree.-200.degree. C. and 40-70 wt. % of a higher melting, flame retardant organic bromine compound which melts at 280.degree.-400.degree. C., each of the flame retardant, organic bromine compounds being thermally stable at the processing temperatures to which the thermoplastic synthetic resin is to be exposed after being combined with the flameproofing additive.
    Type: Grant
    Filed: January 9, 1980
    Date of Patent: November 17, 1981
    Assignee: Chemische Fabrik Kalk GmbH
    Inventors: Ernst Neukirchen, Utto Kerscher