Patents Assigned to BASF Wintershall Holding GmbH
  • Derivatives of tris(2-hydroxyphenyl)methanes, preparation thereof and use thereof for mineral oil production
    Patent number: 9428432
    Abstract: Novel derivatives of tris(2-hydroxyphenyl)methanes which have, as functional groups, polyalkoxy groups unmodified or modified with terminal hydrophilic groups, preparation of such compounds and use thereof, especially for mineral oil production.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: August 30, 2016
    Assignee: BASF Wintershall Holding GmbH
    Inventors: Sophie Maitro-Vogel, Roman Benedikt Raether, Markus Hansch