Patents by Inventor Vivian SPIERING

Vivian SPIERING 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).

  • DIBLOCK COPOLYMERS AND THEIR USE AS SURFACTANTS
    Publication number: 20200277435
    Abstract: The present invention relates to the use of diblock copolymers as surfactants, and to a method for producing diblock copolymers, containing a hydrocarbon-containing block A and a polyether carbonate-containing block B, by attaching alkylene oxide and carbon dioxide to H-functional starters in the presence of a double metal cyanide catalyst, characterized in that the H-functional starter has an OH functionality of 1, and the H-functional starter is selected from one or more compounds of the group of monofunctional alcohols having 10 to 20 carbon atoms, and no further catalyst is used in addition to the DMC catalyst.
    Type: Application
    Filed: October 16, 2018
    Publication date: September 3, 2020
    Inventors: Annika STUTE, Markus MEURESCH, Christoph GÜRTLER, Aurel WOLF, Reinhard SCHOMÄCKER, Michael GRADZIELSKI, Michelle TUPINAMBA LIMA, Vivian SPIERING