Patents Assigned to Vencorex Frence
  • Synthesis of urethanes and polyurethanes catalysed by carbenes
    Patent number: 8759469
    Abstract: The present invention relates to a process for preparing a compound comprising at least a urethane group —HN—C(?O)—O, said process comprising a step (E) in which a compound (I) comprising at least an isocyanate functional group —N?C?O is reacted with an organic compound (II) carrying at least a hydroxyl group —OH, said reaction being carried out in a presence of a carbene (III) used as a catalyst.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: June 24, 2014
    Assignees: Vencorex Frence, Centre National de la Recherche Scientifique (C.N.R.S)
    Inventors: Gerard Mignani, Mathias Destarac, Daniel Taton, Yves Gnanou, Antoine Baceiredo, Tsuyoshi Kato, Fabien Bonnette, Gopakumar Sivasankarapillai