Patents by Inventor Johannes Josef Pragt

Johannes Josef Pragt 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 separating monochloroacetic acid and dichloroacetic acid via extractive distillation
    Patent number: 9073848
    Abstract: The present invention pertains to a process for separating monochloroacetic acid and dichloroacetic acid from one another via extractive distillation, comprising the steps of (i) contacting a mixture comprising monochloroacetic acid and dichloroacetic acid with an extractive agent which is chemically stable and which has a BF3 affinity of between 65 kJ/mole and 110 kJ/mole, (ii) distilling the mixture to obtain a monochloroacetic acid stream and a stream comprising dichloroacetic acid and the extractive agent, and (iii) regenerating the extractive agent.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: July 7, 2015
    Assignee: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
    Inventors: Mark Theodorus Gerardus Jongmans, Johannes Josef Pragt, Gerrald Bargeman, Boelo Schuur, Jacobus Theodorus Josef Aaldering, André Banier De Haan, Melle Rinze Nieuwhof, Paul Verwer, Anton Alexandru Kiss, Antoon Jacob Berend Ten Kate, Cornelis Johannes Govardus Van Strien
  • PROCESS FOR SEPARATING MONOCHLOROACETIC ACID AND DICHLOROACETIC ACID VIA EXTRACTIVE DISTILLATION USING AN ORGANIC SOLVENT
    Publication number: 20150112097
    Abstract: The present invention pertains to a process for separating monochloroacetic acid and dichloroacetic acid from one another via extractive distillation using (a) an extractive agent that is chemically stable and has a BF3 affinity of between 65 kJ/mole and 110 kJ/mole and (b) an organic solvent that is either an acid with a lowest pKa of between 3.0 and 6.
    Type: Application
    Filed: April 3, 2013
    Publication date: April 23, 2015
    Inventors: Johannes Josef Pragt, Mark Theodorus Gerardus Jongmans, Gerrald Bargeman, Boelo Schuur, Jacobus Aaldering, Melle Rinze Nieuwhof, Anton Alexandru Kiss, André Banier De Haa, Alex Londoño Rodriguez, Cornelis Johannes Govardus Van Strien
  • PROCESS FOR SEPARATING MONOCHLOROACETIC ACID AND DICHLOROACETIC ACID VIA EXTRACTIVE DISTILLATION
    Publication number: 20140121411
    Abstract: The present invention pertains to a process for separating monochloroacetic acid and dichloroacetic acid from one another via extractive distillation, comprising the steps of (i) contacting a mixture comprising monochloroacetic acid and dichloroacetic acid with an extractive agent which is chemically stable and which has a BF3 affinity of between 65 kJ/mole and 110 kJ/mole, (ii) distilling the mixture to obtain a monochloroacetic acid stream and a stream comprising dichloroacetic acid and the extractive agent, and (iii) regenerating the extractive agent.
    Type: Application
    Filed: March 13, 2012
    Publication date: May 1, 2014
    Applicant: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
    Inventors: Mark Theodorus Gerardus Jongmans, Johannes Josef Pragt, Gerrald Bargeman, Boelo Schuur, Jacobus Theodorus Josef Aaldering, André Banier De Haan, Melle Rinze Nieuwhof, Paul Verwer, Anton Alexandru Kiss, Antoon Jacob Berend Ten Kate, Cornelis Johannes Govardus Van Strien
  • Material for extracting hydrophobic components dissolved in water
    Patent number: 6764603
    Abstract: A method for the extraction of hydrophobic constituents, such as benzene, toluene, xylene and/or chlorinated hydrocarbons, from an aqueous solution, involving the steps of contacting said solution with a porous, preferably dimensionally stable granular or powdery material, of which the pores have a size of from 0.1 to 50 &mgr;m and contain a hydrophobic substance with affinity for the hydrophobic constituents to be extracted, which granular or powdery material has a particle size of from 0.1 to 10 mm, and is wetted more readily by the hydrophobic substance immobilized in the pores than by the aqueous solution to be treated, and regenerating the product of step a), essentially without the granular or powdery material being freed from the hydrophobic substance, by removal of the hydrophobic constituents.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: July 20, 2004
    Assignee: Akzo Nobel NV
    Inventors: Frederik Albert Buijtenhuijs, Johanne Josef Pragt, Elwin Schomaker
  • Material for extracting hydrophobic components dissolved in water
    Publication number: 20010020602
    Abstract: A method for the extraction of hydrophobic constituents, such as benzene, toluene, xylene and/or chlorinated hydrocarbons, from an aqueous solution, involving the steps of contacting said solution with a porous, preferably dimensionally stable granular or powdery material, of which the pores have a size of from 0.1 to 50 &mgr;m and contain a hydrophobic substance with affinity for the hydrophobic constituents to be extracted, which granular or powdery material has a particle size of from 0.1 to 10 mm, and is wetted more readily by the hydrophobic substance immobilized in the pores than by the aqueous solution to be treated, and regenerating the product of step a), essentially without the granular or powdery material being freed from the hydrophobic substance, by removal of the hydrophobic constituents.
    Type: Application
    Filed: March 29, 2001
    Publication date: September 13, 2001
    Inventors: Frederik Albert Buijtenhuijs, Johanne Josef Pragt, Elwin Schomaker