Patents by Inventor Bernhard Schillinger

Bernhard Schillinger 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).

  • Production of fine-celled foams from styrene polymers
    Patent number: 4446253
    Abstract: Fine-celled foams are produced by a process in which a styrene polymer is melted, the melt is mixed with a volatile blowing agent and a nucleating agent under superatmospheric pressure, the mixture is let down to atmospheric pressure, and the foam is cooled. The nucleating agent employed comprises from 0.02 to 2% by weight of the calcium salt of a long-chain fatty acid, and from 0.01 to 1% by weight of a finely divided, inorganic substance which is insoluble in the styrene polymer, a mixture of calcium stearate and magnesium oxide being preferred.
    Type: Grant
    Filed: July 23, 1982
    Date of Patent: May 1, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Hahn, Heinz Weber, Wolfgang Guenther, Bernhard Schillinger, Reinhold Weber