Patents by Inventor Josien Krijgsman
Josien Krijgsman 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: 10584230Abstract: The invention relates to a flame-retardant polyamide composition comprising a polyamide with a melting temperature higher than 265° C. and ammeline and/or ammelide, in which the ammeline and/or ammelide is obtainable by a biocatalytic process from melamine in an aqueous reaction mixture comprising a biocatalyst, wherein melamine is converted into ammeline and optionally further into ammelide.Type: GrantFiled: November 19, 2014Date of Patent: March 10, 2020Assignee: DSM IP Assets B.V.Inventors: Petronella Catharina Raemakers-Franken, Josien Krijgsman, Renier Henricus Maria Kierkels
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Patent number: 10040904Abstract: Process for the production of a thermoplastic polymer comprising segments of a diamide, the process comprising: 1) a first step of preparing a reaction mixture comprising a diamine H2N—Y—NH2 Form. (I), and a diester of a dicarboxylic acid Form. (II) 2) a second step of heating the reaction mixture to a temperature at least 5° C. above the crystallization temperature of the diester and a least 5° C. below the melting temperature of the formed amide (formula III) in the presence of an alkaline or earth alkaline alkoxy catalyst Form. (III) wherein X and Y are the same or different and are an aliphatic group comprising 2-12 carbon atoms or an aromatic group comprising 6-20 carbon atoms, R1 and R2 are the same or different and are an aliphatic group comprising 2-15 carbon atoms and wherein R equals R1 or R2 and are the same or different.Type: GrantFiled: July 10, 2014Date of Patent: August 7, 2018Assignee: DSM IP ASSETS B.V.Inventors: Wilhelmus Petrus Johannes Appel, Carel Frederik Constantijn Fitié, Atze Jan Nijenhuis, Beert Jacobus Keestra, Josien Krijgsman, Michel Henri Chrétien Joseph Van Houtem, Henricus Marie Janssen
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Patent number: 9905961Abstract: Fine pitch electrical connector socket, comprising at least two opposing walls between which a passageway is defined for receiving an insert with contact pins, the walls being formed from a fiber reinforced flame retardant thermoplastic polymer composition comprising a polyamide polymer, a flame retardant system and a fibrous reinforcing agent, wherein the polyamide polymer comprises at least a semi-crystalline polyamide (A) having a melting temperature Tm-A of at least 280° C., and optionally a second polyamide (B); the polyamide polymer has a crystallization enthalpy ?Hc of at least 50 J/g, the melting temperature Tm-A and crystallization enthalpy ?Hc being measured by DSC with the method according to ISO11357-1/3 with a heating and cooling rate of 20° C.; the flame retardant system comprises a combination of (C-1) a metal salt of dialkylphosphinate and/or diphosphinate and (C-2) a metal salt of phosphoric acid; and the composition has a heat distortion temperature of at least 265° C.Type: GrantFiled: December 18, 2014Date of Patent: February 27, 2018Assignee: DSM IP ASSETS B.V.Inventor: Josien Krijgsman
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Publication number: 20160355667Abstract: The invention relates to a flame-retardant polyamide composition comprising a polyamide with a melting temperature higher than 265° C. and ammeline and/or ammelide, in which the ammeline and/or ammelide is obtainable by a biocatalytic process from melamine in an aqueous reaction mixture comprising a biocatalyst, wherein melamine is converted into ammeline and optionally further into ammelide.Type: ApplicationFiled: November 19, 2014Publication date: December 8, 2016Inventors: Petronella Catharina RAEMAKERS-FRANKEN, Josien KRIJGSMAN, Renier Henricus Maria KIERKELS
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Publication number: 20160322738Abstract: Fine pitch electrical connector socket, comprising at least two opposing walls between which a passageway is defined for receiving an insert with contact pins, the walls being formed from a fiber reinforced flame retardant thermoplastic polymer composition comprising a polyamide polymer, a flame retardant system and a fibrous reinforcing agent, wherein the polyamide polymer comprises at least a semi-crystalline polyamide (A) having a melting temperature Tm-A of at least 280° C., and optionally a second polyamide (B); the polyamide polymer has a crystallization enthalpy ?Hc of at least 50 J/g, the melting temperature Tm-A and crystallization enthalpy ?Hc being measured by DSC with the method according to ISO11357-1/3 with a heating and cooling rate of 20 ° C.; the flame retardant system comprises a combination of (C-1) a metal salt of dialkylphosphinate and/or diphosphinate and (C-2) a metal salt of phosphoric acid; and the composition has a heat distortion temperature of at least 265° C.Type: ApplicationFiled: December 18, 2014Publication date: November 3, 2016Inventor: Josien KRIJGSMAN
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Publication number: 20160200869Abstract: Process for the production of a thermoplastic polymer comprising segments of a diamide, the process comprising: 1) a first step of preparing a reaction mixture comprising a diamine H2N—Y—NH2 Form. (I), and a diester of a dicarboxylic acid Form. (II) 2) a second step of heating the reaction mixture to a temperature at least 5° C. above the crystallization temperature of the diester and a least 5° C. below the melting temperature of the formed amide (formula III) in the presence of an alkaline or earth alkaline alkoxy catalyst Form. (III) wherein X and Y are the same or different and are an aliphatic group comprising 2-12 carbon atoms or an aromatic group comprising 6-20 carbon atoms, R1 and R2 are the same or different and are an aliphatic group comprising 2-15 carbon atoms and wherein R equals R1 or R2 and are the same or different.Type: ApplicationFiled: July 10, 2014Publication date: July 14, 2016Inventors: Wilhelmus Petrus Johannes APPEL, Carel Frederik Constantijn FITIÉ, Atze Jan NIJENHUIS, Beert Jacobus KEESTRA, Josien KRIJGSMAN, Michel Henri Chrétien Joseph VAN HOUTEM, Henricus Marie JANSSEN
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Publication number: 20160100603Abstract: The present invention relates to a process for preparing foil-ripened cheese comprising (i) introducing cheese after brining into a cheese-aging packaging containing an opening for receiving cheese, (ii) closing the packaging, and (iii) ripening the cheese, wherein the cheese-aging packaging comprises a thermoplastic, monolithic film and the closed cheese-aging packaging has a water vapor transmission rate of at least 10 g/m2/24 hours at 10° C. and 85% relative humidity and an oxygen permeability of at most 100 cm3/m2/24 hours/atm at 10° C. and 85% relative humidity.Type: ApplicationFiled: November 13, 2015Publication date: April 14, 2016Inventors: Marnix VAN GURP, Corstiaan Johannes HOOFT, Josien KRIJGSMAN, Alexander Antonius Marie STROEKS
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Patent number: 9242789Abstract: The present invention relates to a process for preparing foil-ripened cheese comprising (i) introducing cheese after brining into a cheese-aging packaging containing an opening for receiving cheese, (ii) closing the packaging, and (iii) ripening the cheese, wherein the cheese-aging packaging comprises a thermoplastic, monolithic film and the closed cheese-aging packaging has a water vapor transmission rate of at least 10 g/m2/24 hours at 10° C. and 85% relative humidity and an oxygen permeability of at most 100 cm3/m2/24 hours/atm at 10° C. and 85% relative humidity.Type: GrantFiled: October 12, 2008Date of Patent: January 26, 2016Assignee: DSM IP ASSETS B.V.Inventors: Marnix Van Gurp, Corstiaan Johannes Hooft, Josien Krijgsman, Alexander Antonius Marie Stroeks
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Patent number: 9192175Abstract: The present invention relates to a process for preparing foil-ripened cheese comprising (i) introducing brined cheese into a cheese-ripening packaging containing an opening for receiving cheese, (ii) closing the packaging, and (iii) ripening the cheese, characterized in that the cheese-ripening packaging comprises a thermoplastic film coated with an antimicrobial composition comprising a binding agent and at least one antimicrobial compound, whereby (a) said binding agent swells, softens or dissolves in the water that is released from the cheese during its ripening, (b) the antimicrobial composition becomes part of the water phase that, due to ripening, becomes present between the outer cheese surface and the packaging, (c) the antimicrobial compound is able to migrate in the water phase and (d) antimicrobial compound is transferred to the outer cheese surface.Type: GrantFiled: February 16, 2010Date of Patent: November 24, 2015Assignee: DSM IP ASSETS B.V.Inventors: Corstiaan Johannes Hooft, Ferdinand Theodorus Jozef Van Rijn, Jacobus Stark, Albert-Jon Vis, Josien Krijgsman
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Patent number: 9114929Abstract: The present invention relates to a process for preparing foil-ripened cheese comprising (i) introducing cheese after brining into a cheese-aging packaging containing an opening for receiving cheese, (ii) closing the packaging, and (iii) ripening the cheese, wherein the cheese-aging packaging comprises a thermoplastic, monolithic film and the closed cheese-aging packaging has a water vapor transmission rate of at least 10 g/m2/24 hours at 10° C. and 85% relative humidity and an oxygen permeability of at most 100 cm3/m2/24 hours/atm at 10° C. and 85% relative humidity.Type: GrantFiled: January 30, 2013Date of Patent: August 25, 2015Assignee: DSM IP ASSETS B.V.Inventors: Marnix Van Gurp, Corstiaan Johannes Hooft, Josien Krijgsman, Alexander Antonius Marie Stroeks
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Publication number: 20150218346Abstract: The invention relates to a railway vehicle comprising an electrical or electronic system comprising a plastic part, characterized in that the plastic part is made from a halogen free flame retardant polymer composition comprising a thermoplastic polymer, glass fibers and melam. The invention relates to a plastic part as described here above, or an electrical or electronic product or system comprising said plastic part, labeled with a classification according to EN45545 or according to NFF 16-101.Type: ApplicationFiled: December 11, 2012Publication date: August 6, 2015Inventors: Rui Zhang, Josien Krijgsman
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Publication number: 20140371357Abstract: The invention relates to plastic component for use as a live part in unattended household appliances, complying with IEC 60335 and/or VDE approval for use in unattended household appliances, wherein the plastic component is made from a halogen free flame retardant polymer composition comprising (A) a thermoplastic polyamide polymer; (B) 10-40 wt. % of glass fibers; (C) 10-40 wt. % of melam; and (D) 0-15 wt. % of a halogen free flame retardant; wherein the wt. % are relative to the total weight of the composition; with the proviso that when the polyamide or polyamides in component (A) consist of monomeric units comprising less than 10 mole % of aromatic units, relative to the total molar amount of the monomeric units, the amount of melam (C) is in the range of 15-40 wt. %.Type: ApplicationFiled: December 11, 2012Publication date: December 18, 2014Inventors: Johannes Hoekstra, Josien Krijgsman, Rui Zhang
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Publication number: 20120052166Abstract: The present invention relates to a process for preparing foil-ripened cheese comprising (i) introducing brined cheese into a cheese-ripening packaging containing an opening for receiving cheese, (ii) closing the packaging, and (iii) ripening the cheese, characterized in that the cheese-ripening packaging comprises a thermoplastic film coated with an antimicrobial composition comprising a binding agent and at least one antimicrobial compound, whereby (a) said binding agent swells, softens or dissolves in the water that is released from the cheese during its ripening, (b) the antimicrobial composition becomes part of the water phase that, due to ripening, becomes present between the outer cheese surface and the packaging, (c) the antimicrobial compound is able to migrate in the water phase and (d) antimicrobial compound is transferred to the outer cheese surface.Type: ApplicationFiled: February 16, 2010Publication date: March 1, 2012Inventors: Corstiaan Johannes Hooft, Ferdinand Theodorus Jozef Van Rijn, Jacobus Stark, Albert-Jon Vis, Josien Krijgsman
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Publication number: 20100297311Abstract: The present invention relates to a process for preparing foil-ripened cheese comprising (i) introducing cheese after brining into a cheese-aging packaging containing an opening for receiving cheese, (ii) closing the packaging, and (iii) ripening the cheese, wherein the cheese-aging packaging comprises a thermoplastic, monolithic film and the closed cheese-aging packaging has a water vapor transmission rate of at least 10 g/m2/24 hours at 10° C. and 85% relative humidity and an oxygen permeability of at most 100 cm3/m2/24 hours/atm at 10° C. and 85% relative humidity.Type: ApplicationFiled: October 12, 2008Publication date: November 25, 2010Inventors: Marnix Van Gurp, Corstiaan Johannes Hooft, Josien Krijgsman, Alexander Antonius Marie Stroeks
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Publication number: 20100247725Abstract: The present invention relates to the use of a packaging material in the construction of a container for respiring produce, wherein the packaging material consists of a polyether-ester block copolymer or a blend of polyether-ester block copolymers and which packaging material has all of the following properties: a) permeability for oxygen is at least 40 cc.mm/m2.day.atm at 10° C. b) permeability for carbon dioxide is at least 600 cc.mm/m2.day.atm at 10° C. c) perm selectivity of carbon dioxide to oxygen is at least 10 d) water vapour transmission is at least 0.5 g.mm/m2.day at 10° C. and 85% RH and e) wherein the dimensions of the packaging material are chosen so as to allow oxygen to enter into the container at a rate lower than 110% of the respiration rate of the produce The invention also relates to a container made from the packaging material.Type: ApplicationFiled: July 1, 2008Publication date: September 30, 2010Inventors: Josien Krijgsman, Alexander Antonius Stroeks, Eggo Ulphard Thoden Van Velzen
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Publication number: 20060217500Abstract: Described herein are novel copolymers containing amide segments. The amide segments have an average length of at least three amide groups and at least 30% of the amide segments are uniform in length. The copolymers have a glass transition temperature of more than 120° C., a Tm-Tc value of less than 40° C., and a Tg/Tm value of more than 0.72. The invention further relates to a method for preparing such a copolymer and to a product comprising such a copolymer, such as a blend or a composite product.Type: ApplicationFiled: August 20, 2004Publication date: September 28, 2006Applicant: Stiching Dutch Polymer InstituteInventors: Reinoud Gaymans, Josien Krijgsman
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Publication number: 20050234215Abstract: Described herein are novel amide copolymers wherein the amide segments have a length of at least three amide groups of which its length is substantially uniform and which copolymers have a glass transition temperature of less than 0° C. A copolymer according to the invention displays a fast crystallization from the melt, and a modulus that is little dependant on the temperature in the temperature region between glass transition and melting temperature. A polymer according to the invention can easily be melt processed by extrusion, injection molding and fiber spinning. A copolymer according to the inventions may be transparent, has a high fracture strain and a high elasticity.Type: ApplicationFiled: February 20, 2003Publication date: October 20, 2005Inventors: Reinoud Gaymans, Josien Krijgsman, Debby Husken