Patents by Inventor André Michiel Koolaard

André Michiel Koolaard 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).

  • Patent number: 9447061
    Abstract: The present invention pertains to a process for preparing a product rich in epichlorohydrin, comprising the steps of: a) reacting a mixture of dichlorohydrin and a base at a temperature in the range of 0-40° C. during a period of time in the range from 1 second to 180 minutes, wherein the base is present in a less than stoichiometric amount, to obtain a reaction mixture comprising epichlorohydrin and brine; b) subjecting at least part of the reaction mixture to a separation step to form a product fraction which is rich in epichlorohydrin and a brine fraction which is lean in epichlorohydrin; c) subjecting at least part of the brine fraction to a purification step to yield a purified brine. It has been found that the process according to the invention allows the manufacture of epichlorohydrin from dichlorohydrin on an industrial scale at high yield, while at the same time providing a brine with a low total organic carbon content without extensive separation being necessary.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: September 20, 2016
    Assignee: Akzo Nobel Chemicals International B.V.
    Inventors: Carolina Anna Maria Christina Dirix, André Michiel Koolaard, Antoon Jacob Berend Ten Kate, Eilertdina Henderika Renkema
  • Publication number: 20150274684
    Abstract: The present invention pertains to a process for preparing a product rich in epichlorohydrin, comprising the steps of: a) reacting a mixture of dichlorohydrin and a base at a temperature in the range of 0-40° C. during a period of time in the range from 1 second to 180 minutes, wherein the base is present in a less than stoichiometric amount, to obtain a reaction mixture comprising epichlorohydrin and brine; b) subjecting at least part of the reaction mixture to a separation step to form a product fraction which is rich in epichlorohydrin and a brine fraction which is lean in epichlorohydrin; c) subjecting at least part of the brine fraction to a purification step to yield a purified brine. It has been found that the process according to the invention allows the manufacture of epichlorohydrin from dichlorohydrin on an industrial scale at high yield, while at the same time providing a brine with a low total organic carbon content without extensive separation being necessary.
    Type: Application
    Filed: October 23, 2013
    Publication date: October 1, 2015
    Inventors: Carolina Anna Maria Christina Dirix, André Michiel Koolaard, Antoon Jacob Berend Ten Kate, Eilertdina Henderika Renkema
  • Patent number: 9006498
    Abstract: Process for the chlorination of an organic compound comprising at least one aliphatic hydroxyl group, said process comprising the steps of actively adding to said organic compound (i) hydrogen chloride and (ii) a HCl desolubilizer or a precursor thereof, and heating the resulting mixture at a reaction temperature in the range 20°-160° C., wherein said chlorination is performed in the presence of a catalyst selected from the group consisting of (a) ketones, (b) aldehydes, (c) carboxylic acids with 1-8 carbon atoms, (d) organic compounds comprising a ?-diketone moiety or a ?-keto aldehyde moiety, and (e) organic polymers comprising at least one carbonyl group, having a vapor pressure at the reaction temperature of less than 1 mbar, a weight average molecular weight Mw of 500 g/mole or more, and are soluble in the reaction mixture at the reaction temperature, and wherein the HCl desolubilizer is an alkali metal chloride salt, an alkaline earth metal chloride salt, or an acid.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: April 14, 2015
    Assignee: Akzo Nobel Chemicals International B.V.
    Inventors: Antoon Jacob Berend Ten Kate, André Michiel Koolaard, Eilertdina Henderika Renkema, Carolina Anna Maria Christina Dirix, Luc Louis Théophile Vertommen
  • Publication number: 20140371492
    Abstract: Process for the chlorination of an organic compound comprising at least one aliphatic hydroxyl group, said process comprising the steps of actively adding to said organic compound (i) hydrogen chloride and (ii) a HCl desolubilizer or a precursor thereof, and heating the resulting mixture at a reaction temperature in the range 20°-160° C., wherein said chlorination is performed in the presence of a catalyst selected from the group consisting of (a) ketones, (b) aldehydes, (c) carboxylic acids with 1-8 carbon atoms, (d) organic compounds comprising a ?-diketone moiety or a ?-keto aldehyde moiety, and (e) organic polymers comprising at least one carbonyl group, having a vapour pressure at the reaction temperature of less than 1 mbar, a weight average molecular weight Mw of 500 g/mole or more, and are soluble in the reaction mixture at the reaction temperature, and wherein the HCl desolubilizer is an alkali metal chloride salt, an alkaline earth metal chloride salt, or an acid.
    Type: Application
    Filed: September 6, 2012
    Publication date: December 18, 2014
    Applicant: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
    Inventors: Antoon Jacob Berend Ten Kate, André Michiel Koolaard, Eilertdina Henderika Renkema, Carolina Anna Maria Christina Dirix, Luc Louis Théophile Vertommen