Patents Assigned to Chematall GmbH
  • Tris(oxalato)phosphates, method for their preparation and their use
    Patent number: 6693212
    Abstract: The invention relates to tris-(oxalato)phosphates of the general formula M[P(C2O4)3] wherein M=H, a metal or N(R1R2R3R4), where R1, R2, R3, R4, are independently H or an alkyl group comprising 1 to 8 C atoms. The invention also relates to a method for preparing such compounds as well as to their use.
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: February 17, 2004
    Assignee: Chematall GmbH
    Inventors: Ulrich Wietelmann, Klaus Schade, Uwe Lischka