Patents by Inventor Christian Fonteix

Christian Fonteix 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).

  • Melt dispersion process for making polymer polyols
    Patent number: 8822581
    Abstract: Polystyrene is dispersed into a polyol via a mechanical dispersion process. A stabilizer is present to stabilize the dispersed polymer particles. The stabilizer includes a copolymer of (1) from 10 to 70% by weight of a branched polyol which has a molecular weight of from 4000 to 20,000, from 0.2 to about 1.2 polymerizable ethylenically unsaturated groups per molecule and from about 3 to about 8 hydroxyl groups per molecule with (2) from 30 to 90% by weight of styrene or a mixture of styrene and one or more other low molecular weight monomers.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: September 2, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Hanno R. Van der Wal, Ronald Wevers, Freddy Van Damme, Francois M. Casati, Georges Kanaan, Fernand Pla, Sandrine Hoppe, Bart Noordover, Christian Fonteix