Patents by Inventor Petra Wenzeler

Petra Wenzeler 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).

  • Process for preparing low-molecular-weight organo(poly)siloxanes
    Patent number: 4948907
    Abstract: Linear low-molecular-weight organo(poly)siloxanes which are monofunctional or difunctional and in which, if difunctional, the two functionalities are present in siloxane units which are chemically different from each other are prepared by reacting an octaorganocyclotetrasiloxane with lithium silanolate in a molar ratio of 0.9:1 to 1.1:1 in an electron-donating, aprotic solvent at a temperature below 50.degree. C., in the absence of water, and thereafter reacting the resultant lithium siloxanolate thus obtained with an organohalosilane.
    Type: Grant
    Filed: August 4, 1988
    Date of Patent: August 14, 1990
    Assignee: Wacker-Chemie GmbH
    Inventors: Gerald Fleischmann, Herbert Eck, Petra Wenzeler