Patents by Inventor Petrus Paulus Waanders

Petrus Paulus Waanders 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).

  • Publication number: 20210403230
    Abstract: Organic peroxide composition that is solid at room temperature, said composition comprising (i) at least about 40 wt %—based on the weight of the entire composition—of an organic peroxide that is solid at room temperature, said organic peroxide being selected from peroxydicarbonates and diacylperoxides, and (ii) about 0.001 to about 5 wt %—based on the weight of organic peroxide in the composition—of an HCl scavenger that is solid at room temperature.
    Type: Application
    Filed: October 11, 2019
    Publication date: December 30, 2021
    Applicant: NOURYON CHEMICALS INTERNATIONAL B.V.
    Inventors: Wilhelm Klaas FRIJLINK, Petrus Paulus WAANDERS, Johan NUYSINK, Rudy KOERS
  • Patent number: 8846832
    Abstract: Emulsion comprising an oil phase dispersed in an aqueous phase, wherein said oil phase comprises at least 53 wt % of one or more organic peroxides, more than 50 wt % of which have a molecular active oxygen content of at least 7.00 5 wt %, said emulsion satisfying the classification tests for organic peroxide type F. This emulsion allows the safe transport and storage of organic peroxide emulsions with high active oxygen content without the need for larger vent openings or higher design pressure of transport tanks and storage tanks.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: September 30, 2014
    Assignee: Akzo Nobel Chemicals International B.V.
    Inventors: Johannes Jacobus Theodorus de Jong, Johan Nuysink, Koen Antoon Kornelis Vanduffel, Petrus Paulus Waanders
  • Patent number: 8783503
    Abstract: Packaged formulation comprising a compound liable to exothermic decomposition and optionally one or more organic diluents, said formulation being packaged in a container with a volume of at least 250 liter provided with a vent to release gases and made from a thermoplastic material having a Vicat B softening temperature not higher than (a) the run-away temperature of the compound liable to exothermic decomposition if the formulation does not contain any diluent, or (b) the boiling temperature of at least 50 wt % of the total weight of diluent if the formulation does contain organic diluent.
    Type: Grant
    Filed: July 3, 2009
    Date of Patent: July 22, 2014
    Assignee: Akzo Nobel N.V.
    Inventors: Petrus Paulus Waanders, Johannes Harmannus Gerardus Lok
  • Publication number: 20120184691
    Abstract: Emulsion comprising an oil phase dispersed in an aqueous phase, wherein said oil phase comprises at least 53 wt % of one or more organic peroxides, more than 50 wt % of which have a molecular active oxygen content of at least 7.00 5 wt %, said emulsion satisfying the classification tests for organic peroxide type F. This emulsion allows the safe transport and storage of organic peroxide emulsions with high active oxygen content without the need for larger vent openings or higher design pressure of transport tanks and storage tanks.
    Type: Application
    Filed: August 3, 2010
    Publication date: July 19, 2012
    Applicant: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
    Inventors: Johannes Jacobus Theodorus de Jong, Johan Nuysink, Koen Antoon Kornelis Vanduffel, Petrus Paulus Waanders
  • Publication number: 20120184685
    Abstract: A packaged peroxide formulation comprising a container and a liquid peroxide formulation, wherein said container has a volume of at least 50 litres and a vent area/volume ratio of at least 20·10?3 m2/m3, said liquid peroxide formulation satisfies the classification tests for organic peroxide type F, has a conductivity of at least 100 pS/m, is not an emulsion or suspension, and comprises (i) at least 33 wt % of an organic peroxide selected from the group consisting of diacyl peroxides, peroxyesters, peroxydicarbonates, peroxyketals, and monoperoxycarbonates, and (ii) optionally a phlegmatiser, the packaged peroxide formulation has a vent area that is at least equal to the minimum total vent area as determined by the 10 litre venting test.
    Type: Application
    Filed: February 13, 2012
    Publication date: July 19, 2012
    Applicant: AKZO NOBEL N.V.
    Inventors: Albert Lucas KORVEMAKER, Frans Johannes HOOGESTEGER, Petrus Paulus WAANDERS
  • Publication number: 20110118421
    Abstract: Packaged formulation comprising a compound liable to exothermic decomposition and optionally one or more organic diluents, said formulation being packaged in a container with a volume of at least 250 litre provided with a vent to release gases and made from a thermoplastic material having a Vicat B softening temperature not higher than (a) the run-away temperature of the compound liable to exothermic decomposition if the formulation does not contain any diluent, or (b) the boiling temperature of at least 50 wt % of the total weight of diluent if the formulation does contain organic diluent.
    Type: Application
    Filed: July 3, 2009
    Publication date: May 19, 2011
    Inventors: Petrus Paulus Waanders, Johannes Harmannus Gerardus Lok
  • Publication number: 20090255932
    Abstract: Pressure release container, e.g. for peroxide materials, with a spout opening (2), a neck (3) along the periphery of the spout opening, and a venting cover (5). The venting cover comprises a body plate (6) to cover the spout opening, the body plate having a vent opening (7) and having a flange (9) with fastening means, e.g. a screw thread (4), to cooperate with corresponding fastening means on the outer face of the neck. The vent opening is covered by a gas permeable sheet (11) fixed between the fastening means of the neck and the flange. The vent opening can be provided with a pop-off cap (8).
    Type: Application
    Filed: August 13, 2007
    Publication date: October 15, 2009
    Applicant: AKZO NOBEL N.V.
    Inventors: Petrus Paulus Waanders, Kai Warnecke, Johannes Harmannus Gerardus Lok
  • Publication number: 20080221269
    Abstract: A packaged peroxide formulation comprising a container and a liquid peroxide formulation, wherein said container has a volume of at least 50 litres and a vent area/volume ratio of at least 20 10-3 m2/m3, said liquid peroxide formulation satisfies the classification tests for organic peroxide type F, has a conductivity of at least 100 pS/m, is not an emulsion or suspension, and comprises (i) at least 33 wt % of an organic peroxide selected from the group consisting of diacyl peroxides, peroxyesters, peroxydicarbonates, peroxyketals, and monoperoxycarbonates, and (ii) optionally a phlegmatiser, the packaged peroxide formulation has a vent area that is at least equal to the minimum total vent area as determined by the 10 litre venting test.
    Type: Application
    Filed: July 20, 2006
    Publication date: September 11, 2008
    Applicant: AKZO NOBEL N.V.
    Inventors: Albert Lucas Korvemaker, Frans Johannes Hoogesteger, Petrus Paulus Waanders
  • Patent number: 6803436
    Abstract: The invention relates to a method to safely produce, handle and transport packaged organic peroxide formulations comprising a reactive phlegmatiser and to the use of such packaged material in polymerisation and polymer modification processes, particularly the high-pressure (co)polymerisation process of ethylene and/or the suspension (co)polymerisation process of styrene.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: October 12, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Petrus Paulus Waanders, Bart Fischer, Johannes Isodorus Roes
  • Publication number: 20040024236
    Abstract: The invention relates to peroxide compositions that are phlegmatised with a specific unsaturated phlegmatising agent. The phlegmatised peroxide compositions are optionally stabilised. In addition, the invention relates to the safe handling of these peroxide compositions and the use of these peroxide compositions in polymerisation processes.
    Type: Application
    Filed: June 17, 2003
    Publication date: February 5, 2004
    Inventors: Koen Antoon Kornelis Vanduffel, Marinus Catharinus Tammer, Petrus Paulus Waanders, Andreas Petrus Van Swieten
  • Publication number: 20030225229
    Abstract: Process for providing acrylic (co)polymers suitable for high solids coating applications, comprising the step of:
    Type: Application
    Filed: June 9, 2003
    Publication date: December 4, 2003
    Inventors: Andreas Petrus Van Swieten, Petrus Paulus Waanders, John Meijer, Andreas Herman Hogt
  • Publication number: 20020091214
    Abstract: The invention relates to a method to safely produce, handle and transport packaged organic peroxide formulations comprising a reactive phlegmatiser and to the use of such packaged material in polymerisation and polymer modification processes, particularly the high-pressure (co)polymerisation process of ethylene and/or the suspension (co)polymerisation process of styrene.
    Type: Application
    Filed: December 19, 2001
    Publication date: July 11, 2002
    Inventors: Petrus Paulus Waanders, Bart Fischer, Johannes Isodorus Roes