Patents by Inventor Ann De Colvenaer

Ann De Colvenaer 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).

  • Process for working-up a reaction mixture comprising polyether polyol
    Patent number: 9132387
    Abstract: The invention relates to a process for working-up a reaction mixture (5) comprising polyetherol and dissolved alkali metal comprising catalyst, wherein at least alkali metal ions of the dissolved alkali metal comprising catalyst are partially or completely removed from the mixture by a membrane separation process, the process comprising following steps: (a) feeding the reaction mixture (5) comprising polyetherol and dissolved alkali metal comprising catalyst into a first chamber (1) of a separation unit (3), (b) feeding a solvent into a second chamber (7) of the separation unit (3), the first chamber (1) and the second chamber (7) being separated by a membrane (9), (c) transporting at least the alkali metal ions of the alkali metal comprising catalyst from the first chamber (1) into the second chamber by passing through the membrane (9).
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: September 15, 2015
    Assignee: BASF SE
    Inventors: Vinit Chilekar, Hartwig Voss, Jelan Kuhn, Ann De Colvenaer, Andreas Brodhagen
  • PROCESS FOR WORKING-UP A REACTION MIXTURE COMPRISING POLYETHER POLYOL
    Publication number: 20130146537
    Abstract: The invention relates to a process for working-up a reaction mixture (5) comprising polyetherol and dissolved alkali metal comprising catalyst, wherein at least alkali metal ions of the dissolved alkali metal comprising catalyst are partially or completely removed from the mixture by a membrane separation process, the process comprising following steps: (a) feeding the reaction mixture (5) comprising polyetherol and dissolved alkali metal comprising catalyst into a first chamber (1) of a separation unit (3), (b) feeding a solvent into a second chamber (7) of the separation unit (3), the first chamber (1) and the second chamber (7) being separated by a membrane (9), (c) transporting at least the alkali metal ions of the alkali metal comprising catalyst from the first chamber (1) into the second chamber by passing through the membrane (9).
    Type: Application
    Filed: December 12, 2012
    Publication date: June 13, 2013
    Inventors: Vinit CHILEKAR, Hartwig Voss, Jelan Kuhn, Ann De Colvenaer, Andreas Brodhagen