Patents Assigned to Rone-Poulenc Chimie
  • Hydroxylation of phenols/phenol ethers
    Patent number: 5149888
    Abstract: The phenols and phenol ethers, e.g., phenol itself, are effectively hydroxylated by reacting hydrogen peroxide therewith, in the presence of a catalytically effective amount of titanium dioxide.
    Type: Grant
    Filed: February 28, 1990
    Date of Patent: September 22, 1992
    Assignee: Rone-Poulenc Chimie
    Inventors: Michel Costantini, Eric Garcin, Michel Gubelmann, Jean-Michel Popa