Patents by Inventor Gilles Hochstetter

Gilles Hochstetter 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: 20170073484
    Abstract: A method for impregnating strands or strips of natural fibres, using the following successive steps: i) the impregnation of the strands or strips by immersion in a bath containing a fine aqueous polymer dispersion; followed by ii) the drying of the strands or strips using a heating system, with the progressive elimination of the water and the gradual melting of the polymer, and the coating of the strands or strips and the molten polymer incorporated into the core of the strands or strips as a binder between the fibres; iii) optionally, the forming of the treated strands or strips into their final shape; and iv) the cooling of the treated strands or strips. The aqueous polymer dispersion comprises at least one semi-crystalline or amorphous polymer and, in the case of an amorphous polymer, has a Tg varying between 50° C. and 175° C.
    Type: Application
    Filed: May 7, 2015
    Publication date: March 16, 2017
    Applicants: ARKEMA FRANCE, DEHONDT TECHNOLOGIES
    Inventors: Quentin PINEAU, Gilles HOCHSTETTER, Marc AUDENAERT, Guy DEHONDT, Edouard PHILIPPE
  • Publication number: 20170073480
    Abstract: The use of an aqueous polymer dispersion including at least one amorphous polymer having a Tg varying between 55° C. and 175° C. or a semi-crystalline polymer having a melting point varying between 70° C. and less than 220° C., the weight concentration of the polymer in the dispersion varying between 5 and 50%, with the polymer particles having an average size of less than 10000 nm, as a binder for impregnating strands or strips of natural fibres, in particular flax fibres, with said polymer being incorporated in the core of the fibre bundle forming the strand or strip and thereby binding the fibres together.
    Type: Application
    Filed: May 7, 2015
    Publication date: March 16, 2017
    Applicant: ar
    Inventors: Quentin PINEAU, Gilles HOCHSTETTER, Marc AUDENAERT
  • Publication number: 20170044317
    Abstract: The invention relates to a method for manufacturing a thermoplastic material, in particular a mechanical part made from said material, characterised in that it includes at least one step of injection moulding a polyamide composition for a thermoplastic material or a composition of a thermoplastic material, or a step implemented by extrusion of same, said material including a thermoplastic matrix made from at least one thermoplastic polymer.
    Type: Application
    Filed: April 14, 2015
    Publication date: February 16, 2017
    Applicant: ARKEMA FRANCE
    Inventors: Thierry BRIFFAUD, Gilles HOCHSTETTER, Mathieu CAPELOT
  • Publication number: 20170037185
    Abstract: A composition including at least one polyamide polymer obtained from at least one reactive polyamide prepolymer including at least one chain extender (PA1-All1-PA1), the polyamide polymer being prepared at a temperature T1 no lower than the temperature melting temperature or glass transition temperature of the polymer and having a mean molecular weight Mn1. The composition has a melt viscosity which can be modulated according to the temperature to which the composition is exposed, wherein the temperature is between T2 and T3, T2 and T3 being higher than T1, and the melt viscosity ?2 or ??3 observed at the temperature T2 or T3, respectively, being lower than the melt viscosity ?2 or ?3 of the polyamide polymer, which does not include a chain extender and has the same mean molecular weight Mn1(PA1) observed at the same temperature T2 or T3. The composition includes one or more polyamides.
    Type: Application
    Filed: April 14, 2015
    Publication date: February 9, 2017
    Applicant: ARKEMA FRANCE
    Inventors: Thierry BRIFFAUD, Gilles HOCHSTETTER, Mathieu CAPELOT
  • Publication number: 20170037186
    Abstract: A reactive molding composition including a precursor reactive composition of a semi-crystalline thermoplastic polymer which is a semi-crystalline polyamide and optionally at least one fibrous reinforcement and with said precursor composition including a) at least one polyamide prepolymer bearing n identical functions X chosen from carboxyl and amine and b) at least one non-polymeric extender bearing two epoxy functions Y that are reactive with said functions X with n ranging from 1 to 3, said polymer and prepolymer a) being of specific composition comprising 55 mol % to 95 mol % of at least two amide units A, and 5 mol % to 45 mol % of amide units B with A corresponding to x.T in which x is a linear aliphatic C9-C18 diamine and B corresponding to x?.T, said polyamide having a Tg of at least 80° C. and a Tm of less than or equal to 280° C.
    Type: Application
    Filed: April 15, 2015
    Publication date: February 9, 2017
    Applicant: Arkema France
    Inventors: Gilles Hochstetter, Thierry Briffaud, Mathieu Capelot
  • Publication number: 20170037199
    Abstract: A molding composition including at least one semi-crystalline polyamide derived from the polyaddition of a) at least one polyamide prepolymer bearing n identical functions X chosen from carboxyl, amine and hydroxyl, and of b) at least one non-polymeric reactive extender bearing two identical functions Y that are reactive with said functions X with n ranging from 1 to 3, the polyamide and prepolymer a) including 55 mol % to 95 mol % of amide units A, 5 mol %-45 mol % of amide units B with A corresponding to x.T in which x is a linear aliphatic C9-C18 diamine and B corresponding to x?.T in which x? may be B1): specific branched aliphatic diamine dependent on x or B2): MXD or B3): linear aliphatic diamine which depends on x, the polyamide having a Tg of at least 90° C. and a Tm of less than or equal to 280° C.
    Type: Application
    Filed: April 15, 2015
    Publication date: February 9, 2017
    Applicant: Arkema France
    Inventors: Gilles Hochstetter, Thierry Briffaud, Mathieu Capelot
  • Publication number: 20170037208
    Abstract: A process for a composite material, including an assembly of one or more reinforcing fibers, impregnated with at least one thermoplastic polymer with a glass transition temperature Tg of less than or equal to 75° C. and a melting point of from 150° C. to less than 250° C. or a Tg of greater than 75° C., the process including: i) a step of impregnating said assembly in bulk melt form with at least one thermoplastic polymer, which is the product of polymerization by polyaddition reaction of a reactive precursor composition including: a) at least one prepolymer P(X)n of said thermoplastic polymer, and b) at least one chain extender, represented by Y-A-Y, ii) a step of cooling and obtaining a fibrous preimpregnate, and iii) a step of processing and final forming of said composite material.
    Type: Application
    Filed: April 15, 2015
    Publication date: February 9, 2017
    Applicant: Arkema France
    Inventors: Gilles Hochstetter, Thierry Briffaud, Mathieu Capelot
  • Publication number: 20170037204
    Abstract: A composition for a thermoplastic composite material, wherein said matrix thermoplastic polymer is a semi-crystalline polyamide polymer including amide units Z, 10T and 6T; wherein Z corresponds to an amide unit resulting from the condensation of at least one lactam or at least one C6-C14 amino acid, from the condensation of a diamine and a diacid X.Y, X and Y being at C4-C18, the molar rate of Z being 0.0%<Z?30.0%; 10T is a majority amide unit resulting from the condensation of a C10 diamine and terephthalic acid, provided in a molar rate of 40.0% to 95.0%; and 6T is an amide unit resulting from the condensation of a C6 diamine and terephthalic acid, provided in a molar rate of 5.0% to 60.0%.
    Type: Application
    Filed: April 14, 2015
    Publication date: February 9, 2017
    Applicant: ARKEMA FRANCE
    Inventors: Thierry BRIFFAUD, Gilles HOCHSTETTER, Mathieu CAPELOT
  • Publication number: 20160347009
    Abstract: A method of manufacturing a pre-impregnated fibrous material produced as a plurality of unidirectional parallel tapes, said method including the following steps: i) impregnation of the fibrous material while it is in the form of several parallel rovings, said impregnation step including: ia) immersion in a bath containing an aqueous dispersion of thermoplastic polymer, said immersion being followed by ib) drying, then ii) shaping by calendering, using at least one heated calender, into the form of a plurality of unidirectional parallel tapes using said calender including a plurality of calendering grooves according to the number of said tapes and with a pressure and/or separation between the rolls of said calender regulated by a control system.
    Type: Application
    Filed: February 11, 2015
    Publication date: December 1, 2016
    Applicant: ARKEMA FRANCE
    Inventors: Patrice GAILLARD, Gilles HOCHSTETTER, Thibaut SAVART
  • Publication number: 20160346966
    Abstract: A method to produce a pre-impregnated fibrous material, in particular in ribbon form, including a fibrous reinforcement and thermoplastic polymer matrix, including a step of impregnating the fibrous material in the form of a single roving or several parallel rovings with the polymer in the molten state, the polymer in the molten state at the time of the impregnation containing a neutral gas in the supercritical state used as production aid by reducing viscosity in the molten state, preferably the gas being supercritical CO2.
    Type: Application
    Filed: February 11, 2015
    Publication date: December 1, 2016
    Applicant: ARKEMA FRANCE
    Inventors: Patrice GAILLARD, Gilles HOCHSTETTER, Thibaut SAVART
  • Publication number: 20160017136
    Abstract: The invention relates to a composition comprising: a homopolymer of vinylidene fluoride (VDF) and at least one other fluorinated monomer copolymerizable with VDF, the weight proportion of said copolymer in the composition being between 10 to 35%; and a plasticisizer, the weight proportion of said plasticizer in the composition being between 1 to 5%. The invention also relates to a method for producing said composition and the use thereof for producing various items.
    Type: Application
    Filed: March 1, 2013
    Publication date: January 21, 2016
    Applicant: Arkema France
    Inventors: Gilles Hochstetter, Lionel HUGON, Thomas LABOUR, Thierry LANNUZEL, Barbara RAMFEL, Ramin AMIN-SANAYEI
  • Publication number: 20150273772
    Abstract: A method for manufacturing a composite part including a fibrous reinforcement and a thermoplastic polymer matrix, which includes the steps of i) depositing the fibrous reinforcement in a two-part mold having a seal compressible by evacuating said mold having no vent, ii) filling the evacuated mold by injecting, in the molten state, a two-component reactive system made of a reactive thermoplastic prepolymer, the injection being carried out using a device having two distinct compartments for each one of the two reactive components mixed in a static mixer, followed by a compression and compaction of the content of the mold, and iii) removing the part from the mold, without any finishing treatment. Further, a device for implementing said method, to the resulting part and to the use of said method in an “in-mold” assembly method.
    Type: Application
    Filed: October 21, 2013
    Publication date: October 1, 2015
    Applicants: LE POLE DE PLASTURGIE DE L'EST, ARKEMA FRANCE
    Inventors: Jean-Pierre Cauchois, Gilles Hochstetter, Michel Glotin
  • Publication number: 20150267050
    Abstract: A composition for a thermoplastic composite material having a thermoplastic matrix made of a semi-crystalline polyamide having a specific composition that includes at least two amide units, A, 55-95 mol %, and B, 5-45 mol %. A corresponds to x.T, wherein x is a C9-C18 linear aliphatic diamine and B corresponds to x?.T, wherein x? can be B1): a specific branched x-dependent aliphatic diamine, B2): MXD or B3): a linear x-dependent aliphatic diamine, said polyamide having a glass transition temperature Tg of at least 90° C. and a melting point no higher than 280° C. Also, a method for manufacturing said composite material, the semi-crystalline polyamide polymer, the use of the composition and of the polymer for parts made of composite material, as well as the material and the resulting composite part.
    Type: Application
    Filed: October 21, 2013
    Publication date: September 24, 2015
    Applicant: ARKEMA FRANCE
    Inventors: Thierry Briffaud, Gilles Hochstetter
  • Patent number: 9139707
    Abstract: A method of producing a composite material, comprising an assembly of natural fibers, impregnated with an amorphous or semi-crystalline thermoplastic polymer, said method including: i) a step of impregnating said assembly with a precursor composition in the molten state and including: a) at least one prepolymer P(X)n of said thermoplastic polymer, having a molecular chain P having, at the ends of same, n reactive functions X, with n ranging from 1 to 3, in particular n being 1 or 2, and preferably 2 b) at least one chain extender Y-A-Y including reactive functions Y with at least one of said functions X ii) a step of polymerization by mass (poly)addition, in the molten state, of said prepolymer with said chain extender with: said thermoplastic polymer being the result of said polymerization by mass polyaddition and said impregnation i) and polymerization ii) taking place at a temperature lower than 250° C.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: September 22, 2015
    Assignee: ARKEMA FRANCE
    Inventors: Gilles Hochstetter, Marc Audenaert, Thierry Briffaud
  • Publication number: 20150258742
    Abstract: A process for manufacturing a part made of thermoplastic composite material including a fibrous reinforcement and a matrix of thermoplastic polymer based on a thermoplastic polymer which impregnates said fibrous reinforcement, which process includes: a) a step of impregnating said dry fibrous reinforcement, by injection onto said reinforcement, of a precursor of said polymer, and moulding, with the polymerization step b) being simultaneous with the impregnating and moulding step and with the regulating temperature T2 for said mould being kept constant throughout the moulding cycle, and with reheating of the internal surface of the mould, just before said injection, using a heating means which is external to the mould and removable, with c) demoulding of the part, and d) optional continuation of the polymerization, if said polymerization is partial at demoulding, in a separate step outside the mould, by annealing in an oven at an annealing temperature.
    Type: Application
    Filed: October 21, 2013
    Publication date: September 17, 2015
    Applicants: LE POLE DE PLASTURGIE DE L'EST, ARKEMA FRANCE
    Inventors: Gilles Hochstetter, Jean-Pierre Cauchois, Camille Perrin, Henri Perrin, Michel Glotin
  • Publication number: 20150218362
    Abstract: The present invention relates to an impregnation process for a fibrous substrate, a liquid composition for implementing this process and the obtained impregnated fibrous substrate. The impregnated fibrous substrate is suitable for manufacturing mechanical or structured parts or articles. In particular the present invention deals with an industrial process for impregnating a fibrous substrate or long fibers with a viscous liquid composition containing mainly methacrylic or acrylic components. This viscous composition is called hereafter liquid (meth) acrylic syrup. The invention concerns also a fibrous substrate pre-impregnated with said syrup which is useful for manufacturing mechanical or structured parts or articles. More particular the impregnation of fibrous substrate with the (meth) acrylic syrup is achieved in a closed mould.
    Type: Application
    Filed: July 18, 2013
    Publication date: August 6, 2015
    Inventors: Pierre Gerard, Jean-Pierre Cauchois, Gilles Hochstetter, Michel Glotin, Camille Perrin, Gilles Francois
  • Publication number: 20150126646
    Abstract: A method of producing a composite material, comprising an assembly of natural fibres, impregnated with an amorphous or semi-crystalline thermoplastic polymer, said method including: i) a step of impregnating said assembly with a precursor composition in the molten state and including: a) at least one prepolymer P(X)n of said thermoplastic polymer, having a molecular chain P having, at the ends of same, n reactive functions X, with n ranging from 1 to 3, in particular n being 1 or 2, and preferably 2 b) at least one chain extender Y-A-Y including reactive functions Y with at least one of said functions X ii) a step of polymerisation by mass (poly)addition, in the molten state, of said prepolymer with said chain extender with: said thermoplastic polymer being the result of said polymerisation by mass polyaddition and said impregnation i) and polymerisation ii) taking place at a temperature lower than 250° C.
    Type: Application
    Filed: May 30, 2013
    Publication date: May 7, 2015
    Inventors: Gilles Hochstetter, Marc Audenaert, Thierry Briffaud
  • Patent number: 8883898
    Abstract: The invention relates to a method for the impregnation of continuous fibers that comprises coating said fibers with a polymer matrix containing: (a) at least one fluorinated polymer grafted with at least one carboxylic polar function and (b) optionally at least one fluorinated nongrafted polymer. The invention also relates to the composite fibers that can be obtained by said method and to the use thereof.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: November 11, 2014
    Assignee: Arkema France
    Inventors: Gilles Hochstetter, Michael Werth
  • Publication number: 20140316063
    Abstract: A method for producing a composite material, including an assembly of one or a plurality of synthetic reinforcement fibres, impregnated with at least one thermoplastic polymer having a vitreous transition temperature Tg greater than or equal to 80° C. including: i) a step of impregnating said assembly with a precursor composition in the molten state and including: a) at least one prepolymer P(X)n of said thermoplastic polymer, including a molecular chain P having, at the ends n thereof, identical reactive functions X, said prepolymer having a semi-aromatic and/or semi-cycloaliphatic structure, b) at least one chain extender including two identical functions Y, which are reactive with at least one of said functions X; ii) a step of polymerisation by mass (poly)addition, in the molten state, of said prepolymer with said chain extender, with said thermoplastic polymer of the thermoplastic matrix being the result of said polymerisation by mass polyaddition.
    Type: Application
    Filed: October 23, 2012
    Publication date: October 23, 2014
    Applicant: ARKEMA FRANCE
    Inventors: Gilles Hochstetter, Thierry Briffaud, Michel Glotin, Pierre Nogues, Maliha Khusrawy
  • Publication number: 20140256850
    Abstract: The present invention relates to a composite material obtained by in situ polymerization of a thermoplastic resin with a fibrous material. More particularly the present invention relates to a polymeric composite material obtained by in-situ polymerization of a thermoplastic (meth) acrylic resin and a fibrous material containing long fibers and its use, a process for making such a composite material and manufactured mechanical or structured part or article comprising this polymeric composite material.
    Type: Application
    Filed: October 19, 2012
    Publication date: September 11, 2014
    Applicant: Arkema France
    Inventors: Pierre Gerard, Michel Glotin, Gilles Hochstetter