Patents by Inventor Rémi Valero

Rémi Valero 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: 11975978
    Abstract: The invention relates to the use of carboxylic acid during the preparation of precipitated silica or a suspension of precipitated silica and to the precipitated silicas thus obtained, particularly with low water uptake, which can be used, for example, as a reinforcing filler in silicon matrices.
    Type: Grant
    Filed: June 11, 2021
    Date of Patent: May 7, 2024
    Assignee: RHODIA CHIMIE
    Inventors: Remi Valero, Jean-Noel Jas, Joel Racinoux, Kyu-Min Hwang, Youn-Kwon Yoo, Soline De Cayeux
  • Patent number: 11241370
    Abstract: The invention relates to a novel method of preparing silicas and to highly-structured silicas having the following characteristics: a specific surface area CTAB (SCTAB) of between 40 and 525 m2/g; a specific surface area BET (SBET) of between 45 and 550 m2/g; an object size distribution width Ld ((d84?D16)/d50), which is measured by XDC particle size analysis after deagglomeration with ultrasound, of at least 0.91; and a pore-size distribution such that ratio V(d5?d50)/V(d5?d100) is at least 0.66. The invention also relates to the use of said silicas as polymer reinforcing fillers.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: February 8, 2022
    Assignee: RHODIA CHIMIE
    Inventors: Rémi Valero, Julien Hernandez
  • Publication number: 20210309530
    Abstract: The invention relates to the use of carboxylic acid during the preparation of precipitated silica or a suspension of precipitated silica and to the precipitated silicas thus obtained, particularly with low water uptake, which can be used, for example, as a reinforcing filler in silicon matrices.
    Type: Application
    Filed: June 11, 2021
    Publication date: October 7, 2021
    Applicant: RHODIA CHIMIE
    Inventors: Remi Valero, Jean-Noel Jas, Joel Racinoux, Kyu-Min Hwang, Youn-Kwon Yoo, Soline Daudey
  • Patent number: 10486978
    Abstract: Disclosed is a method for manufacturing calcium aluminates in an industrial furnace, according to which, continuously, into a tank made of refractory material containing a molten pool that is constantly heated, fine particles are introduced of a raw material source of alumina and/or of aluminium and of a raw material source of calcium oxide and/or of calcium having a median diameter d50 less than or equal to 6,000 ?m in order to melt the fine particles of raw material, and, continuously, at the outlet of the tank a mass of liquid calcium aluminates is recovered.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: November 26, 2019
    Assignee: KERNEOS
    Inventors: Remi Valero, Philippe Deffrasnes, Lionel Sever, Franck Schroeder
  • Patent number: 10023471
    Abstract: Precipitated silica specifically useful in the paper industry and in particular in paper-coating applications for inject printing, is characterized by an uptake of DOP oil lower than 260 ml/100 g, a pore volume (Vd25) of greater than 0.8 ml/g formed by pores having a diameter of less than 25 nm, a CTAB specific surface area of greater than 280 m2/g.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: July 17, 2018
    Assignee: Rhodia Operations
    Inventors: Pierre-Yves Lahary, Yvonick Chevallier, Remi Valero
  • Publication number: 20180186651
    Abstract: Disclosed is a method for manufacturing calcium aluminates in an industrial furnace, according to which, continuously, into a tank made of refractory material containing a molten pool that is constantly heated, fine particles are introduced of a raw material source of alumina and/or of aluminium and of a raw material source of calcium oxide and/or of calcium having a median diameter d50 less than or equal to 6,000 ?m in order to melt the fine particles of raw material, and, continuously, at the outlet of the tank a mass of liquid calcium aluminates is recovered.
    Type: Application
    Filed: July 13, 2016
    Publication date: July 5, 2018
    Inventors: Remi VALERO, Philippe DEFFRASNES, Lionel SEVER, Franck SCHROEDER
  • Publication number: 20150132577
    Abstract: Precipitated silica specifically useful in the paper industry and in particular in paper-coating applications for inject printing, is characterized by an uptake of DOP oil lower than 260 ml/100 g, a pore volume (Vd25) of greater than 0.8 ml/g formed by pores having a diameter of less than 25 nm, a CTAB specific surface area of greater than 280 m2/g.
    Type: Application
    Filed: October 9, 2014
    Publication date: May 14, 2015
    Inventors: PIERRE-YVES LAHARY, YVONICK CHEVALLIER, REMI VALERO
  • Publication number: 20120329937
    Abstract: The present invention relates to a method for preparing precipitated silica, in particular in powder form. The invention also relates to the resulting precipitated silicas and to the use thereof, in particular for the reinforcement of silicone elastomer or silicone paste matrices.
    Type: Application
    Filed: December 20, 2010
    Publication date: December 27, 2012
    Applicant: BLUESTAR SILICONES FRANCE
    Inventor: Rémi Valero
  • Publication number: 20110263784
    Abstract: The invention relates to a novel method of preparing silicas and to highly-structured silicas having the following characteristics: a specific surface area CTAB (SCTAB) of between 40 and 525 m2g/g; a specific surface area BET (SBET) of between 45 and 550 m2g; an object size distribution width Ld ((d84?D16)/d50), which is measured by XDC particle size analysis after deagglomeration with ultrasound, of at least 0.91; and a pore-size distribution such that ratio V(d5?d50)/V(d5?d100) is at least 0.66. The invention also relates to the use of said silicas as polymer reinforcing fillers.
    Type: Application
    Filed: June 22, 2011
    Publication date: October 27, 2011
    Applicant: RHODIA CHIMIE
    Inventors: Rémi VALERO, Julien Hernandez
  • Patent number: 7799304
    Abstract: The invention relates to a highly-structured precipitated silica having a low water uptake and high dispersibility in different pasty or solid matrices or media, elastomers or silicon, and to the preparation method thereof. The invention also relates to the use of said silica, for example, as a reinforcing filler in matrices based on elastomers (clear or semi-clear for shoe soles), in silicon matrices (in particular, for the coating of electric cables), as a filler and/or support and/or vehicle in different compositions (food compositions, cosmetic compositions, pharmaceutical compositions, compositions for the production of paints or paper, compositions for the production of porous membrane separators for batteries) or as a thickening agent in toothpastes.
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: September 21, 2010
    Assignee: Rhodia Chimie
    Inventors: Adrien Dromard, Yvonick Chevallier, Rémi Valero, Dominique Petit
  • Publication number: 20100221541
    Abstract: The invention relates to a novel method of preparing silicas and to highly-structured silicas having the following characteristics: a specific surface area CTAB (SCTAB) of between 40 and 525 m2/g; a specific surface area BET (SBET) of between 45 and 550 m2/g; an object size distribution width Ld ((d84?d16)/d50), which is measured by XDC particle size analysis after deagglomeration with ultrasound, of at least 0.91; and a pore-size distribution such that ratio V(d5?d50)/V(d5?d100) is at least 0.66. The invention also relates to the use of said silicas as polymer reinforcing fillers.
    Type: Application
    Filed: August 20, 2009
    Publication date: September 2, 2010
    Applicant: RHODIA CHIMIE,
    Inventors: Remi Valero, Julien Hernandez
  • Publication number: 20100192636
    Abstract: The invention relates to a method of controlling the level of corrosivity of an aqueous solution recovered during a process for producing a blanket of mineral fibers, comprising in particular the fiberizing and the coating of said fibers with a binder comprising a polyacid typically of the acrylic type, said aqueous solution being at least partly recycled into a zone in which said resin is prepared and/or a scrubbing zone of the production plant, said method being characterized in that the pH of the solution in the recycling circuit is maintained between minimum and maximum values by injecting into said circuit an agent for modifying said pH, such as a base, the quantity injected or the flow rate of the pH-modifying agent being adjusted directly according to the quantity or the flow rate of acid binder injected during the fiberizing process. The invention also relates to the device for implementing the method.
    Type: Application
    Filed: July 2, 2008
    Publication date: August 5, 2010
    Applicant: Saint-Gobain Isover
    Inventors: Remi Valero, Bernard Lericque, Alexis Ponnouradjou
  • Publication number: 20100083876
    Abstract: Precipitated silica specifically useful in the paper industry and in particular in paper-coating applications for inject printing, is characterized by an uptake of DOP oil lower than 260 ml/100 g, a pore volume (Vd25) of greater than 0.8 ml/g formed by pores having a diameter of less than 25 nm, a CTAB specific surface area of greater than 280 m2/g.
    Type: Application
    Filed: June 27, 2007
    Publication date: April 8, 2010
    Inventors: Pierre-Yves Lahary, Yvonick Chevallier, Rémi Valero
  • Publication number: 20100055265
    Abstract: The invention concerns compounds, for use as liquid support and as anticaking agent, and, simultaneously, as nutrient additive in particular for animals, including of precipitated silica and phosphate selected among phosphates of elements of groups Ia or IIa of the periodic table of the elements and rare-earth phosphates, the compounds being in the form of substantially spherical pellets.
    Type: Application
    Filed: October 16, 2009
    Publication date: March 4, 2010
    Applicant: RHODIA CHIMIE
    Inventors: Patrick Ferlin, Lorraine Leite, Pierre-Yves Lahary, Rémi Valero
  • Publication number: 20090214449
    Abstract: Carboxylic acids are employed during the preparation of precipitated silica or a suspension of precipitated silica to provide precipitated silicas with low water uptake, which are useful, for example, as reinforcing fillers for silicon matrices.
    Type: Application
    Filed: May 29, 2006
    Publication date: August 27, 2009
    Applicant: RHODIA CHIMIE
    Inventors: Remi Valero, Jean-Noel Jas, Joel Racinoux, Kyu-Min Hwang, Youn-Kwon Yoo, Soline Daudey
  • Patent number: 7524478
    Abstract: The invention concerns a method for preparing low water uptake precipitated silicas, comprising successive steps which consist in: (a) producing an initial starter including a silicate, the silicate concentration in said starter, expressed in SiO2 equivalent, being less than 15 g/L; (b) bringing the medium pH to a value ranging between 7 and 8 by adding an acidifying agent, (c) in the resulting medium, simultaneously adding a silicate and an acidifying agent the respective amounts of silicate and acidifying agent added in time being specifically such that, during the entire addition (1) the reaction medium pH stays between 7 and 8, and (ii) the silicon concentration in the medium, expressed in SiO2 equivalent, stays below 35 g/L; (d) adding an acidifying agent in the medium resulting from step (c), so as to bring the medium to a pH ranging between 3 and 6.5; and (e) filtering the resulting aqueous silica dispersion, then drying the filter cake obtained at the end of the filtering step.
    Type: Grant
    Filed: December 24, 2002
    Date of Patent: April 28, 2009
    Inventors: Remi Valero, Yvonick Chevallier
  • Publication number: 20080019898
    Abstract: The invention relates to a highly-structured precipitated silica having a low water uptake and high dispersibility in different pasty or solid matrices or media, elastomers or silicon, and to the preparation method thereof. The invention also relates to the use of said silica, for example, as a reinforcing filler in matrices based on elastomers (clear or semi-clear for shoe soles), in silicon matrices (in particular, for the coating of electric cables), as a filler and/or support and/or vehicle in different compositions (food compositions, cosmetic compositions, pharmaceutical compositions, compositions for the production of paints or paper, compositions for the production of porous membrane separators for batteries) or as a thickening agent in toothpastes.
    Type: Application
    Filed: December 20, 2004
    Publication date: January 24, 2008
    Inventors: Adrien Dromard, Yvonick Chevallier, Remi Valero, Dominique Petit
  • Patent number: 7250463
    Abstract: Diene rubber compositions are described containing a diene elastomer, a reinforcing inorganic filler, and a coupling agent wherein the inorganic filler includes a silica having the following characteristics: (a) a BET specific surface area between 45 and 400 m2/g; (b) a CTAB specific surface area between 40 and 380 m2/g; (c) an average particle size (by mass), dw, of 20 to 300 nm; and at least one of the following characteristics, preferably two and more preferably all three: (d) a particle size distribution such that dw?/CTAB)?30; (e) a porosity which meets the criterion L/FI??0.0025 CTAB+0.85; (f) an amount of silanols per unit of surface area, NSiOH/nm2; NSiOH/nm2??0.027 CTAB+10.5. These diene rubber compositions can be used for the manufacture of tires or of semi-finished products intended for tires.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: July 31, 2007
    Assignee: Michelin Recherche et Technique S.A.
    Inventors: Olivier Durel, Arnaud Lapra, Julien Hernandez, Rémi Valero
  • Publication number: 20060147546
    Abstract: The invention concerns compounds, for use as liquid support and as anticaking agent, and, simultaneously, as nutrient additive in particular for animals, consisting of precipitated silica and phosphate selected among phosphates of elements of groups Ia or IIa of the periodic table of the elements and rare-earth phosphates, said compounds being in the form of substantially spherical pellets.
    Type: Application
    Filed: August 21, 2003
    Publication date: July 6, 2006
    Inventors: Patrick Ferlin, Lorraine Leite, Pierre-Yves Lahary, Remi Valero
  • Publication number: 20050074386
    Abstract: The invention concerns a method for preparing low water uptake precipitated silicas, comprising successive steps which consist in: (a) producing an initial starter including a silicate, the silicate concentration in said starter, expressed in SiO2 equivalent, being less than 15 g/L; (b) bringing the medium pH to a value ranging between 7 and 8 by adding an acidifying agent, (c) in the resulting medium, simultaneously adding a silicate and an acidifying agent the respective amounts of silicate and acidifying agent added in time being specifically such that, during the entire addition (1) the reaction medium pH stays between 7 and 8, and (ii) the silicon concentration in the medium, expressed in SiO2 equivalent, stays below 35 g/L; (d) adding an acidifying agent in the medium resulting from step (c), so as to bring the medium to a pH ranging between 3 and 6.5; and (e) filtering the resulting aqueous silica dispersion, then drying the filter cake obtained at the end of the filtering step.
    Type: Application
    Filed: December 24, 2002
    Publication date: April 7, 2005
    Inventors: Remi Valero, Yvonick Chevallier