Patents by Inventor Dieter Wewers

Dieter Wewers 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 epoxypolysiloxanes modified with oxyalkylene ether groups as a curable coating agent
    Patent number: 5204433
    Abstract: Curable organopolysiloxanes with epoxy groups are disclosed which contain additionally at least one group of the formula[--O--((C.sub.n H.sub.2n O--).sub.x).sub.y ].sub.z R.sup.3 --O--((C.sub.n H.sub.2n O--).sub.x).sub.y HwhereinR.sup.3 is a divalent alkylene group with 2 to 11 carbon atoms,z is 0 or 1y is 0 or 1z+y is 1 or 2n has an average value of 2 to 3 in the average molecule, the absolute value of n being 2, 3 or 4 andx has a value of 1 to 200.The organopolysiloxanes which contain the additional group are useful as curable coating agents with adhesive properties when used alone or in admixture with curable compounds which have epoxy groups, particularly organopolysiloxanes which contain epoxy groups, but are free of the aforementioned additional group. The organopolysiloxanes are used in combination with catalytically acting curing agents.
    Type: Grant
    Filed: July 15, 1991
    Date of Patent: April 20, 1993
    Assignee: Th. Goldschmidt AG
    Inventors: Dieter Wewers, Christian Weitemeyer, Jurgen Jachmann