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).
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Patent number: 11407714Abstract: 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: GrantFiled: January 31, 2020Date of Patent: August 9, 2022Assignee: NOURYON CHEMICALS INTERNATIONAL B.V.Inventors: Martinus Catharinus Tammer, John Hendrik Jacob Van Der Linden, Pattama Saisaha, Maria Steensma
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Patent number: 11332620Abstract: 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: GrantFiled: March 8, 2019Date of Patent: May 17, 2022Assignee: 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
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Publication number: 20220106269Abstract: 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: ApplicationFiled: January 31, 2020Publication date: April 7, 2022Applicant: NOURYON CHEMICALS INTERNATIONAL B.V.Inventors: Martinus Catharinus TAMMER, John Hendrik Jacob VAN DER LINDEN, Pattama SAISAHA, Maria STEENSMA
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Publication number: 20220081307Abstract: 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: ApplicationFiled: January 28, 2020Publication date: March 17, 2022Applicant: NOURYON CHEMICALS INTERNATIONAL B.V.Inventors: Maria STEENSMA, Martinus Catharinus TAMMER, Claus DECKER
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Publication number: 20210017389Abstract: 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: ApplicationFiled: March 8, 2019Publication date: January 21, 2021Applicant: 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
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Patent number: 10221296Abstract: 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: GrantFiled: December 15, 2015Date of Patent: March 5, 2019Assignee: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.Inventors: Maria Steensma, Markus Oliver Majoor, Martin Hermanus Maria Jensen, Albert Roland Zuijderduin, Antonie Den Braber
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Publication number: 20180022892Abstract: 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: ApplicationFiled: December 15, 2015Publication date: January 25, 2018Inventors: Maria STEENSMA, Markus Oliver MAJOOR, Martin Hermanus Maria JANSEN, Albert Roland ZUIJDERDUIN, Antonie DEN BRABER
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Patent number: 9873795Abstract: 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: GrantFiled: January 27, 2014Date of Patent: January 23, 2018Assignee: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.Inventors: Maria Steensma, Johannes Martinus Gerardus Maria Reijnders, Albert Roland Zuijderduin, Susana Gomes Santana, Auke Gerardus Talma
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Patent number: 9745203Abstract: 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: GrantFiled: October 27, 2014Date of Patent: August 29, 2017Assignee: Akzo Nobel Chemicals International B.V.Inventors: Hendrikus Wilhelmus Bakkenes, Roberto Aloysius Gerardus Maria Bergevoet, Johannes Albertus Maria Meijer, Maria Steensma
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Publication number: 20160355664Abstract: 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: ApplicationFiled: February 9, 2015Publication date: December 8, 2016Applicant: 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
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Publication number: 20150322264Abstract: 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: ApplicationFiled: January 27, 2014Publication date: November 12, 2015Inventors: Maria Steensma, Johannes Martinus Gerardus Maria Reijnders, Albert Roland Zuijderduin, Susana Gomes Santana, Auke Gerardus Talma
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Publication number: 20150114841Abstract: 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: ApplicationFiled: October 27, 2014Publication date: April 30, 2015Inventors: Hendrikus Wilhelmus BAKKENES, Roberto Aloysius Gerardus Maria BERGEVOET, Johannes Albertus Maria MEIJER, Maria STEENSMA
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Patent number: 8911796Abstract: 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: GrantFiled: May 27, 2010Date of Patent: December 16, 2014Assignee: Akzo Nobel Chemicals International B.V.Inventors: Hendrikus Wilhelmus Bakkenes, Roberto Aloysius Gerardus Maria Bergevoet, Johannes Albertus Maria Meijer, Maria Steensma
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Patent number: 8888867Abstract: 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: GrantFiled: October 29, 2009Date of Patent: November 18, 2014Assignee: Akzo Nobel N.V.Inventors: Hendrikus Wilhelmus Bakkenes, Johannes Albertus Maria Meijer, Allert Schokker, Maria Steensma
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Patent number: 8759574Abstract: 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: GrantFiled: May 27, 2010Date of Patent: June 24, 2014Assignee: Akzo Nobel Chemicals International B.V.Inventors: Hendrikus Wilhelmus Bakkenes, Roberto Aloysius Gerardus Maria Bergevoet, Johannes Albertus Maria Meijer, Maria Steensma
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Publication number: 20140072718Abstract: 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: ApplicationFiled: September 6, 2013Publication date: March 13, 2014Applicant: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.Inventors: Shanfeng JIANG, Hendrikus Wilhelmus Bakkenes, Roberto Aloysius Gerardus Maria Bergevoet, Johannes Albertus Maria Meijer, Maria Steensma
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Publication number: 20120244231Abstract: 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: ApplicationFiled: November 29, 2010Publication date: September 27, 2012Inventors: Shanfeng Jiang, Hendrikus Wilhelmus Bakkenes, Roberto Aloysius Geradrdus Maria Bergevoet, Johannes Albertus Maria Meijer, Maria Steensma
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Publication number: 20120129952Abstract: 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: ApplicationFiled: May 27, 2010Publication date: May 24, 2012Applicant: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.Inventors: Hendrikus Wilhelmus Bakkenes, Roberto Aloysius Gerardus Maria Bergevoet, Johannes Albertus Maria Meijer, Maria Steensma
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Publication number: 20120130124Abstract: 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: ApplicationFiled: May 27, 2010Publication date: May 24, 2012Applicant: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.Inventors: Hendrikus Wilhelmus Bakkenes, Roberto Aloysius Gerardus Maria Bergevoet, Johannes Albertus Maria Meijer, Maria Steensma
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Publication number: 20110214257Abstract: 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: ApplicationFiled: October 29, 2009Publication date: September 8, 2011Applicant: Akzo Nobel N.V.Inventors: Hendrikus Wilhelmus Bakkenes, Johannes Albertue Maria Meijer, Allert Schokker, Maria Steensma