Patents by Inventor Christian Freyer

Christian Freyer 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).

  • Organosilsesquioxanes having at least one mesogenic side group
    Patent number: 5442025
    Abstract: Organosilsesquioxanes having at least one mesogenic side group and processes for their preparation, which comprise reacting organosilsesquioxanes having at least one Si-bonded hydrogen atom with chiral or achiral mesogenic compounds containing an aliphatic multiple bond.
    Type: Grant
    Filed: January 10, 1994
    Date of Patent: August 15, 1995
    Assignee: Consortium fur elektrochemische Industrie GmbH
    Inventors: Peter Spes, Franz-Heinrich Kreuzer, Christian Freyer, Mechthild Hessling
  • Blowing agent compositions and compositions curable to give elastomeric silicone foams
    Patent number: 5332762
    Abstract: Blowing agent compositions (a) comprising aqueous emulsions containing organopolysiloxanes (1), emulsifiers (2), water (3) and thickeners (4) which may be used in the preparation of elastomeric silicone foams.The blowing agent compositions are used in curable compositions to form elastomeric silicone foams which comprise the blowing agent compositions (a), diorganopolysiloxanes (b), crosslinking agents (c) and, if appropriate, crosslinking catalysts (d) and optionally fillers (e). Elastomeric silicone foams are prepared by mixing the blowing agent compositions (a), with curable organopolysiloxane compositions containing diorganopolysiloxanes (b), crosslinking agents (c) and, if appropriate, crosslinking catalysts (d) and optionally fillers (e) and also optionally additional substances and then the resultant mixture is cured at temperatures in the range of from 100.degree. to 250.degree. C. with simultaneous foaming to form the elastomeric silicone foams.
    Type: Grant
    Filed: April 9, 1993
    Date of Patent: July 26, 1994
    Assignee: Wacker-Chemie GmbH
    Inventors: Adolf Maschberger, Christian Freyer