Patents by Inventor René Gerritsen

René Gerritsen 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).

  • Storage stable aqueous organic peroxide emulsions
    Patent number: 11059779
    Abstract: Aqueous emulsion comprising: —25-70 wt % organic peroxide, based on the weight of the emulsion, —a cyclohexane dicarboxylate ester, and —water. This emulsion is storage stable and can be used for the production of polymers, in particular PVC, that come into contact with food products.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: July 13, 2021
    Assignee: NOURYON CHEMICALS INTERNATIONAL B.V.
    Inventors: René Gerritsen, Richard Hermannes Johannes Hekkert, Ester Elisabeth Antonia Keijzer
  • STORAGE STABLE AQUEOUS ORGANIC PEROXIDE EMULSIONS
    Publication number: 20190071397
    Abstract: Aqueous emulsion comprising: —25-70 wt % organic peroxide, based on the weight of the emulsion, —a cyclohexane dicarboxylate ester, and —water. This emulsion is storage stable and can be used for the production of polymers, in particular PVC, that come into contact with food products.
    Type: Application
    Filed: March 14, 2017
    Publication date: March 7, 2019
    Inventors: René GERRITSEN, Richard Hermannes Johannes HEKKERT, Ester Elisabeth Antonia KEIJZER
  • Polymerization process with in-situ initiator formation
    Patent number: 8987391
    Abstract: A process for the polymerization of one or more monomers wherein at least one anhydride and at least one peroxy compound selected from inorganic peroxides, organic hydroperoxides, and peroxyacids are dosed during the polymerization reaction in a continuous or intermittent fashion to a reaction mixture comprising said monomers.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: March 24, 2015
    Assignee: Akzo Nobel Chemicals International B.V.
    Inventors: René Gerritsen, Jacobus Schut, Johannes Willibrordus Antonius Overkamp, Johannes Jacobus Theodorus De Jong
  • Polymerization Process with In-Situ Initiator Formation
    Publication number: 20130211019
    Abstract: A process for the polymerization of one or more monomers wherein at least one anhydride and at least one peroxy compound selected from inorganic peroxides, organic hydroperoxides, and peroxyacids are dosed during the polymerization reaction in a continuous or intermittent fashion to a reaction mixture comprising said monomers.
    Type: Application
    Filed: June 27, 2011
    Publication date: August 15, 2013
    Applicant: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
    Inventors: René Gerritsen, Jacobus Schut, Johannes Willibrordus Antonius Overkamp, Johannes Jacobus Theodorus De Jong
  • Process for preparing unsaturated lactones
    Patent number: 8383834
    Abstract: The invention relates to a process for preparing saturated or unsaturated lactones. This process involves reacting a bicyclic compound or a monocyclic compound with hydrogen peroxide in the presence of a first acid having a pKa of 3 or less and a first organic solvent, thereby forming a hydroperoxide. The obtained mixture comprising the hydroperoxide is subsequently metered to a mixture of a second organic solvent and a dissociation-enhancing catalyst, optionally comprising a second organic acid. The invention also pertains to a process of preparing the hydroperoxide.
    Type: Grant
    Filed: May 10, 2005
    Date of Patent: February 26, 2013
    Assignee: SYMRISE AG
    Inventors: John Meijer, René Gerritsen, Bart Fischer
  • Aqueous hydrogen peroxide-containing composition and its use for cleaning surfaces
    Patent number: 7824503
    Abstract: The invention pertains to an aqueous composition having a pH of 3 or less and comprising the following ingredients, based on the total weight of the composition: a) 0.05-40 wt % of a polymeric thickener having —COOR groups, wherein R is independently chosen from H, OH, and a carbon-containing group, and b) 0.05-60 wt % of hydrogen peroxide, wherein the active oxygen content attributable to ingredient a) is at least 0.02 wt %, based on the total weight of the composition, with the proviso that (co)polymers prepared from (meth)acrylate monomers are absent.
    Type: Grant
    Filed: April 12, 2007
    Date of Patent: November 2, 2010
    Assignee: Akzo Nobel N.V.
    Inventors: Wasil Maslow, René Gerritsen, Bernhard De Vries, John Meijer, Paul Albert Iacobucci
  • PROCESS FOR PREPARING UNSATURATED LACTONES
    Publication number: 20090306411
    Abstract: The invention relates to a process for preparing saturated or unsaturated lactones. This process involves reacting a bicyclic compound or a monocyclic compound with hydrogen peroxide in the presence of a first acid having a pKa of 3 or less and a first organic solvent, thereby forming a hydroperoxide. The obtained mixture comprising the hydroperoxide is subsequently metered to a mixture of a second organic solvent and a dissociation-enhancing catalyst, optionally comprising a second organic acid. The invention also pertains to a process of preparing the hydroperoxide.
    Type: Application
    Filed: May 10, 2005
    Publication date: December 10, 2009
    Applicant: SYMRISE GMBH & CO. KG
    Inventors: John Meijer, Rene Gerritsen, Bart Fischer
  • AQUEOUS HYDROGEN PEROXIDE-CONTAINING COMPOSITION AND ITS USE FOR CLEANING SURFACES
    Publication number: 20090264333
    Abstract: The invention pertains to an aqueous composition having a pH of 3 or less and comprising the following ingredients, based on the total weight of the composition: a) 0.05-40 wt % of a polymeric thickener having —COOR groups, wherein R is independently chosen from H, OH, and a carbon-containing group, and b) 0.05-60 wt % of hydrogen peroxide, wherein the active oxygen content attributable to ingredient a) is at least 0.02 wt %, based on the total weight of the composition, with the proviso that (co)polymers prepared from (meth)acrylate monomers are absent.
    Type: Application
    Filed: April 12, 2007
    Publication date: October 22, 2009
    Inventors: Wasil Maslow, Rene Gerritsen, Bernhard De Vries, John Meijer, Paul Albert Iacobucci
  • Trioxepan compounds
    Patent number: 6566391
    Abstract: The invention relates to compounds of formulae I and II and compositions comprising these compounds.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: May 20, 2003
    Assignee: Akzo Nobel N.V.
    Inventors: Andreas H. Hogt, John Meijer, Rene Gerritsen
  • Novel trioxepan compounds
    Publication number: 20020040152
    Abstract: The invention relates to compounds of formulae I and II 1
    Type: Application
    Filed: August 15, 2001
    Publication date: April 4, 2002
    Inventors: Andreas H. Hogt, John Meijer, Rene Gerritsen
  • Use of trioxepans in the process to modify (CO) polymers
    Publication number: 20020040108
    Abstract: The invention relates to a polymer modification process wherein the rheology of one or more (co)polymers is modified by contacting the (co)polymer with at least one decomposing peroxide of the formula, 1
    Type: Application
    Filed: August 15, 2001
    Publication date: April 4, 2002
    Inventors: Rene Gerritsen, Andreas H. Hogt, John Meijer