Patents by Inventor Maria Steensma

Maria Steensma 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: 11407714
    Abstract: This present disclosure relates to a process for producing an organic peroxide and isolating, purifying, and concentrating the sulfuric acid from the aqueous effluents of said organic peroxide production process.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: August 9, 2022
    Assignee: NOURYON CHEMICALS INTERNATIONAL B.V.
    Inventors: Martinus Catharinus Tammer, John Hendrik Jacob Van Der Linden, Pattama Saisaha, Maria Steensma
  • Patent number: 11332620
    Abstract: Solution comprising about 1 to about 25 wt % of a dye that loses its colour during radical cure and about 75 to about 99 wt % of a solvent mixture, said solvent mixture comprising cyclopentanone and dimethylsulphoxide in a weight ratio of about 60:40 to about 95:5.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: May 17, 2022
    Assignee: NOURYON CHEMICALS INTERNATIONAL B.V.
    Inventors: Raymond Albertus Johannes Ten Broeke, Maaike Anne Gertrud Ter Brake, Koichi Tateishi, Johannes Hermanus Ter Beek, Auke Gerardus Talma, Maria Steensma, Geesje Klasina Spijkerman
  • Publication number: 20220106269
    Abstract: This present disclosure relates to a process for producing an organic peroxide and isolating, purifying, and concentrating the sulfuric acid from the aqueous effluents of said organic peroxide production process.
    Type: Application
    Filed: January 31, 2020
    Publication date: April 7, 2022
    Applicant: NOURYON CHEMICALS INTERNATIONAL B.V.
    Inventors: Martinus Catharinus TAMMER, John Hendrik Jacob VAN DER LINDEN, Pattama SAISAHA, Maria STEENSMA
  • Publication number: 20220081307
    Abstract: Process for producing a salt comprising NaCl and/or KCl from the aqueous effluents from one or more organic peroxide production processes, said process comprising the following steps (a) ensuring the pH of the aqueous effluents to be in the range from about 1-5, (b) separating the effluents in a liquid organic layer and an aqueous layer, (c) removing the organic layer, (d) raising the pH of the aqueous layer to a value in the range from about 6-14, and (e) crystallizing the salt from the aqueous layer having a pH in the range from about 6-14.
    Type: Application
    Filed: January 28, 2020
    Publication date: March 17, 2022
    Applicant: NOURYON CHEMICALS INTERNATIONAL B.V.
    Inventors: Maria STEENSMA, Martinus Catharinus TAMMER, Claus DECKER
  • Publication number: 20210017389
    Abstract: Solution comprising about 1 to about 25 wt % of a dye that loses its colour during radical cure and about 75 to about 99 wt % of a solvent mixture, said solvent mixture comprising cyclopentanone and dimethylsulphoxide in a weight ratio of about 60:40 to about 95:5.
    Type: Application
    Filed: March 8, 2019
    Publication date: January 21, 2021
    Applicant: NOURYON CHEMICALS INTERNATIONAL B.V.
    Inventors: Raymond Albertus Johannes TEN BROEKE, Maaike Anne Gertrud TER BRAKE, Koichi TATEISHI, Johannes Hermanus TER BEEK, Auke Gerardus TALMA, Maria STEENSMA, Geesje Klasina SPIJKERMAN
  • Patent number: 10221296
    Abstract: Powder mixture comprising: ?20-90 wt % of one or more powdered organic peroxides and ?10-80 wt % of one or more powdered filler materials, at least 60 wt % thereof being barium sulphate.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: March 5, 2019
    Assignee: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
    Inventors: Maria Steensma, Markus Oliver Majoor, Martin Hermanus Maria Jensen, Albert Roland Zuijderduin, Antonie Den Braber
  • Publication number: 20180022892
    Abstract: Powder mixture comprising: ?20-90 wt % of one or more powdered organic peroxides and ?10-80 wt % of one or more powdered filler materials, at least 60 wt % thereof being barium sulphate.
    Type: Application
    Filed: December 15, 2015
    Publication date: January 25, 2018
    Inventors: Maria STEENSMA, Markus Oliver MAJOOR, Martin Hermanus Maria JANSEN, Albert Roland ZUIJDERDUIN, Antonie DEN BRABER
  • Patent number: 9873795
    Abstract: Process for the preparation of a fiber-reinforced composite material comprising the step of contacting (i) a radically curable resin, (ii) fibers with a total water content of 0.5-20 wt %, based on the total weight of fibers, (iii) at least one transition metal compound selected from manganese, iron, and copper compounds, and (iv) a peroxide.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: January 23, 2018
    Assignee: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
    Inventors: Maria Steensma, Johannes Martinus Gerardus Maria Reijnders, Albert Roland Zuijderduin, Susana Gomes Santana, Auke Gerardus Talma
  • Patent number: 9745203
    Abstract: The present invention relates to a sodium chloride composition comprising an iron complex of tartaric acid wherein between 55 and 90% by weight of the tartaric acid is meso-tartaric acid. The present invention furthermore relates to a process to prepare such a sodium chloride composition and to the use of such a sodium chloride composition.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: August 29, 2017
    Assignee: Akzo Nobel Chemicals International B.V.
    Inventors: Hendrikus Wilhelmus Bakkenes, Roberto Aloysius Gerardus Maria Bergevoet, Johannes Albertus Maria Meijer, Maria Steensma
  • Publication number: 20160355664
    Abstract: Process for curing an unsaturated polyester resin or vinyl ester resin, the resin comprising a reactive diluent selected from the group consisting of acrylic acid, methacrylic acid, acrylates, methacrylates, acrylamides, methacrylamides, and combinations thereof, said process comprising the addition to said resin of (i) a ketone peroxide selected from the group consisting of methyl isopropyl ketone peroxide, methyl isobutyl ketone peroxide, cyclohexanone peroxide, and combinations thereof and (ii) a compound of a transition metal selected from the group consisting of Mn, Fe, and Cu, and combinations thereof.
    Type: Application
    Filed: February 9, 2015
    Publication date: December 8, 2016
    Applicant: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
    Inventors: Albert Roland Zuijderduin, Johannes Martinus Gerardus Maria Reijnders, Maaike Anne Gertrud Ter Brake, Maria Steensma, Auke Gerardus Talma
  • Publication number: 20150322264
    Abstract: Process for the preparation of a fibre-reinforced composite material comprising the step of contacting (i) a radically curable resin, (ii) fibres with a total water content of 0.5-20 wt %, based on the total weight of fibres, (iii) at least one transition metal compound selected from manganese, iron, and copper compounds, and (iv) a peroxide.
    Type: Application
    Filed: January 27, 2014
    Publication date: November 12, 2015
    Inventors: Maria Steensma, Johannes Martinus Gerardus Maria Reijnders, Albert Roland Zuijderduin, Susana Gomes Santana, Auke Gerardus Talma
  • Publication number: 20150114841
    Abstract: The present invention relates to a sodium chloride composition comprising an iron complex of tartaric acid wherein between 55 and 90% by weight of the tartaric acid is meso-tartaric acid. The present invention furthermore relates to a process to prepare such a sodium chloride composition and to the use of such a sodium chloride composition.
    Type: Application
    Filed: October 27, 2014
    Publication date: April 30, 2015
    Inventors: Hendrikus Wilhelmus BAKKENES, Roberto Aloysius Gerardus Maria BERGEVOET, Johannes Albertus Maria MEIJER, Maria STEENSMA
  • Patent number: 8911796
    Abstract: The present invention relates to a sodium chloride composition comprising an iron complex of tartaric acid wherein between 55 and 90% by weight of the tartaric acid is meso-tartaric acid. The present invention furthermore relates to a process to prepare such a sodium chloride composition and to the use of such a sodium chloride composition.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: December 16, 2014
    Assignee: Akzo Nobel Chemicals International B.V.
    Inventors: Hendrikus Wilhelmus Bakkenes, Roberto Aloysius Gerardus Maria Bergevoet, Johannes Albertus Maria Meijer, Maria Steensma
  • Patent number: 8888867
    Abstract: The present invention pertains to a process for producing sodium chloride comprising the steps of: (i) preparing a brine having a sodium chloride concentration which is higher than the sodium chloride concentration of the eutectic point but lower than the sodium chloride concentration of a saturated brine by dissolving a sodium chloride source in water; (ii) cooling the resulting brine by indirect cooling in a self-cleaning fluidized bed heat exchanger/crystallizer to a temperature lower than 0° C. but higher than the eutectic temperature of the resulting brine, thereby forming a slurry comprising sodium chloride dihydrate and a mother liquor; (iii) feeding the sodium chloride dihydrate to a recrystallizer to form sodium chloride and a mother liquor, and (iv) recycling at least part of the mother liquor obtained in step (ii) and/or step (iii) to step (i).
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: November 18, 2014
    Assignee: Akzo Nobel N.V.
    Inventors: Hendrikus Wilhelmus Bakkenes, Johannes Albertus Maria Meijer, Allert Schokker, Maria Steensma
  • Patent number: 8759574
    Abstract: The present invention relates to a process for the preparation of a composition comprising tartaric acid wherein between 55 and 90% by weight of the tartaric acid is meso-tartaric acid, comprising the steps of (i) preparing an aqueous mixture comprising between 35 and 65% by weight of a di-alkali metal salt of L-tartaric acid, a di-alkali metal salt of D-tartaric acid, a mixture of di-alkali metal salts of L-tartaric acid, D-tartaric acid, and optionally meso-tartaric acid, and between 2 and 15% by weight of an alkali metal or alkaline metal hydroxide, and (ii) stirring and heating the aqueous mixture to a temperature of between 100° C. and its boiling point until between 55 and 90% by weight of tartaric acid has been converted to meso-tartaric acid.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: June 24, 2014
    Assignee: Akzo Nobel Chemicals International B.V.
    Inventors: Hendrikus Wilhelmus Bakkenes, Roberto Aloysius Gerardus Maria Bergevoet, Johannes Albertus Maria Meijer, Maria Steensma
  • Publication number: 20140072718
    Abstract: The present invention relates to a potassium chloride composition comprising an iron complex of tartaric acid, characterized in that at least 5% by weight of the tartaric acid is mesotartaric acid and that a 10% by weight aqueous solution of said potassium chloride composition has a pH value of between 6 and 11. The present invention furthermore relates to a process to prepare such a potassium chloride composition and to the use of such a potassium chloride composition.
    Type: Application
    Filed: September 6, 2013
    Publication date: March 13, 2014
    Applicant: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
    Inventors: Shanfeng JIANG, Hendrikus Wilhelmus Bakkenes, Roberto Aloysius Gerardus Maria Bergevoet, Johannes Albertus Maria Meijer, Maria Steensma
  • Publication number: 20120244231
    Abstract: The present invention relates to a potassium chloride composition comprising an iron complex of tartaric acid, characterized in that at least 5% by weight of the tartaric acid is mesotartaric acid and that a 10% by weight aqueous solution of said potassium chloride composition has a pH value of between 6 and 11. The present invention furthermore relates to a process to prepare such a potassium chloride composition and to the use of such a potassium chloride composition.
    Type: Application
    Filed: November 29, 2010
    Publication date: September 27, 2012
    Inventors: Shanfeng Jiang, Hendrikus Wilhelmus Bakkenes, Roberto Aloysius Geradrdus Maria Bergevoet, Johannes Albertus Maria Meijer, Maria Steensma
  • Publication number: 20120129952
    Abstract: The present invention relates to a sodium chloride composition comprising an iron complex of tartaric acid wherein between 55 and 90% by weight of the tartaric acid is meso-tartaric acid. The present invention furthermore relates to a process to prepare such a sodium chloride composition and to the use of such a sodium chloride composition.
    Type: Application
    Filed: May 27, 2010
    Publication date: May 24, 2012
    Applicant: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
    Inventors: Hendrikus Wilhelmus Bakkenes, Roberto Aloysius Gerardus Maria Bergevoet, Johannes Albertus Maria Meijer, Maria Steensma
  • Publication number: 20120130124
    Abstract: The present invention relates to a process for the preparation of a composition comprising tartaric acid wherein between 55 and 90% by weight of the tartaric acid is meso-tartaric acid, comprising the steps of (i) preparing an aqueous mixture comprising between 35 and 65% by weight of a di-alkali metal salt of L-tartaric acid, a di-alkali metal salt of D-tartaric acid, a mixture of di-alkali metal salts of L-tartaric acid, D-tartaric acid, and optionally meso-tartaric acid, and between 2 and 15% by weight of an alkali metal or alkaline metal hydroxide, and (ii) stirring and heating the aqueous mixture to a temperature of between 100° C. and its boiling point until between 55 and 90% by weight of tartaric acid has been converted to meso-tartaric acid.
    Type: Application
    Filed: May 27, 2010
    Publication date: May 24, 2012
    Applicant: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
    Inventors: Hendrikus Wilhelmus Bakkenes, Roberto Aloysius Gerardus Maria Bergevoet, Johannes Albertus Maria Meijer, Maria Steensma
  • Publication number: 20110214257
    Abstract: The present invention pertains to a process for producing sodium chloride comprising the steps of: (i) preparing a brine having a sodium chloride concentration which is higher than the sodium chloride concentration of the eutectic point but lower than the sodium chloride concentration of a saturated brine by dissolving a sodium chloride source in water; (ii) cooling the resulting brine by indirect cooling in a self-cleaning fluidized bed heat exchanger/crystallizer to a temperature lower than 00 C but higher than the eutectic temperature of the resulting brine, thereby forming a slurry comprising sodium chloride dihydrate and a mother liquor; (iii) feeding the sodium chloride dihydrate to a recrystallizer to form sodium chloride and a mother liquor, and (iv) recycling at least part of the mother liquor obtained in step (ii) and/or step (iii) to step (i).
    Type: Application
    Filed: October 29, 2009
    Publication date: September 8, 2011
    Applicant: Akzo Nobel N.V.
    Inventors: Hendrikus Wilhelmus Bakkenes, Johannes Albertue Maria Meijer, Allert Schokker, Maria Steensma