Patents Assigned to Rhodia Operations
  • Patent number: 12241009
    Abstract: A modified phosphor is described comprising phosphor particles and at least one amphiphilic agent. Compositions comprising the modified phosphor and at least one polymer are also described.
    Type: Grant
    Filed: October 5, 2021
    Date of Patent: March 4, 2025
    Assignee: RHODIA OPERATIONS
    Inventors: Valérie Buissette, Franck Aurissergues, Thierry Le Mercier
  • Patent number: 12214333
    Abstract: A mixed oxide, a catalytic composition, a catalytic wall-flow monolith, the use of the mixed oxide and the process of the preparation of the mixed oxide. The mixed oxide comprises zirconium, cerium, lanthanum and optionally at least one rare earth element other than cerium and other than lanthanum. The catalytic composition and the wall-flow monolith comprise the particles of the mixed oxide. The use of the mixed oxide is in the preparation of a coating on a filter. The process of preparation of the mixed oxide consists jet milling. The mixed oxide is a compromise between a calibrated size and a low viscosity when in the form of an aqueous slurry while retaining a high specific surface area and a high pore volume.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: February 4, 2025
    Assignee: RHODIA OPERATIONS
    Inventors: Simon Ifrah, Rui Jorge Coelho Marques, Wei Li, Ling Zhu
  • Publication number: 20250026649
    Abstract: A precipitated silica having large particle size for use in tire applications. In particular, a precipitated silica characterised by a CTAB surface area SCTAB equal to or greater than 160 m2/g; a median particle size d50, measured by centrifugal sedimentation, such that ? "\[LeftBracketingBar]" d ? 50 ? ? "\[LeftBracketingBar]" > 25000 / ? "\[LeftBracketingBar]" S C ? T ? A ? B ? "\[RightBracketingBar]" ( I ) wherein |d50| represents the numerical value of the median particle size d50 measured by centrifugal sedimentation and expressed in nm and |SCTAB| represents the numerical value of the CTAB surface area SCTAB expressed in m2/g; and an aluminium content not exceeding 4500 ppm.
    Type: Application
    Filed: October 2, 2024
    Publication date: January 23, 2025
    Applicant: RHODIA OPERATIONS
    Inventors: Cyril Chomette, Frédéric Colbeau-Justin, Fabien Stocklouser, Cédric Boivin, Thomas Chaussee
  • Patent number: 12166236
    Abstract: A precipitated silica suitable for use in lead-acid battery separators having a good balance between mechanical properties and electrical resistivity. In particular, a precipitated silica characterised by a DOA oil absorption equal to or greater than 200 mL/100 g; a median aggregate size D50M equal to or lower than 8.7 ?m and equal to or greater than a parameter A whose value, expressed in microns, is calculated from equation (1): A=23.3?0.076×|DOA|, wherein |DOA| represents the numerical value of the DOA oil absorption expressed in mL/100 g.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: December 10, 2024
    Assignee: RHODIA OPERATIONS
    Inventors: Jules Valente, Brice Schlegel, Lionel Barriquand
  • Publication number: 20240391783
    Abstract: A precipitated silica is provided having high compatibility with stannous and fluoride ions and good balance of abrasion properties. A precipitated silica characterised by a CTAB surface area SCTAB comprised between 5 and 50 m2/g; an abrasion value Hm between 3.5 and 14.0 ?m; and a stannous ion compatibility of at least 40%.
    Type: Application
    Filed: August 2, 2024
    Publication date: November 28, 2024
    Applicant: RHODIA OPERATIONS
    Inventor: Cédric Feral-Martin
  • Publication number: 20240383761
    Abstract: A precipitated silica for use in tire applications. In particular, a precipitated silica characterised by a CTAB surface area SCTAB greater than 140 m2/g; a width of the aggregate size distribution Ld, measured by centrifugal sedimentation, of at least 1.2; a pH of less than 5.5; and a carbon content of less than 1500 ppm.
    Type: Application
    Filed: July 30, 2024
    Publication date: November 21, 2024
    Applicant: RHODIA OPERATIONS
    Inventors: Frédéric Colbeau-Justin, Cédric Boivin, Cyril Chomette, Thomas Chaussee, Laurent Guy
  • Patent number: 12145853
    Abstract: Precipitated silica having large median particle size for use as reinforcing filler in elastomeric compositions as well as its method of manufacture. In particular, a precipitated silica characterised by a CTAB surface area SCTAB in the range from 70 to 350 m2/g; an amount WM of at least one metal M selected from elements of groups 3, 4 and 5 of at least 0.1 mol %; and a median particle size d50, measured by centrifugal sedimentation, such that: |d50|?183×|RION|×|WM|?0.67×|SCTAB|+233 (I) wherein |d50| represents the numerical value of median particle size d50 measured by centrifugal sedimentation and expressed in nm; |RION|, the numerical value of the ionic radius of metal M expressed in nm; |SCTAB|, the numerical value of the CTAB surface area SCTAB expressed in m2/g; and |WM|, the numerical value of the percentage molar amount of the metal WM.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: November 19, 2024
    Assignee: RHODIA OPERATIONS
    Inventors: Frédéric Colbeau-Justin, Emmanuelle Allain Najman, Pascaline Lauriol-Garbey
  • Patent number: 12134564
    Abstract: A precipitated silica having large particle size for use in tire applications. In particular, a precipitated silica characterised by a CTAB surface area SCTAB equal to or greater than 160 m2/g; a median particle size d50, measured by centrifugal sedimentation, such that |d50|>25000/|SCTAB|??(I) wherein |d50| represents the numerical value of the median particle size d50 measured by centrifugal sedimentation and expressed in nm and |SCTAB| represents the numerical value of the CTAB surface area SCTAB expressed in m2/g; and an aluminium content not exceeding 4500 ppm.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: November 5, 2024
    Assignee: RHODIA OPERATIONS
    Inventors: Cyril Chomette, Frédéric Colbeau-Justin, Fabien Stocklouser, Cédric Boivin, Thomas Chaussee
  • Patent number: 12077444
    Abstract: A precipitated silica for use in tire applications. In particular, a precipitated silica characterised by a CTAB surface area SCTAB greater than 140 m2/g; a width of the aggregate size distribution Ld, measured by centrifugal sedimentation, of at least 1.2; a pH of less than 5.5; and a carbon content of less than 1500 ppm.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: September 3, 2024
    Assignee: RHODIA OPERATIONS
    Inventors: Frédéric Colbeau-Justin, Cédric Boivin, Cyril Chomette, Thomas Chaussee, Laurent Guy
  • Publication number: 20240253019
    Abstract: The present invention relates to a composition based on Al and Ce in the form of oxides (composition C1); or based on Al, Ce and La in the form of oxides (composition C2), with the following proportions: —the proportion of CeO2 is between 3.0 wt % and 35.0 wt %; —the proportion of La2O3 (for composition C2 only) is between 0.1 wt % and 6.0 wt %; —the remainder as Al2O3; exhibiting the following porosity profile: —a pore volume in the range of pores with a size of between 5 nm and 100 nm which is between 0.35 and 1.00 mL/g; and—a pore volume in the range of pores with a size of between 100 nm and 1000 nm which is less than or equal to 0.15 mL/g, these pore volumes being determined by means of the mercury porosimetry technique; and the following properties: —a mean size of the crystallites after calcination in air at 1100° C. for 5 hours (denoted D1100° C.-5 h) which is lower than 45.0 nm, preferably lower than 40.0 nm; —a mean size of the crystallites after calcination in air at 900° C.
    Type: Application
    Filed: May 9, 2022
    Publication date: August 1, 2024
    Applicant: RHODIA OPERATIONS
    Inventors: Julien Hernandez, Oguzhan Yaglidere, Virginie Harle, Simon Ifrah
  • Publication number: 20240247169
    Abstract: The invention relates to cerium based core-shell particles having a core of cerium oxide optionally doped with at least one metal (M) and a shell consisting of a plurality of nanoparticles of cerium oxide optionally doped with at least one metal (M?), which can be the same or different from metal (M), formed on the surface of the core particle. The invention also relates to dispersions thereof in a liquid medium, to a process for producing the same and to the use of these particles and dispersions in polishing applications such as chemical mechanical polishing.
    Type: Application
    Filed: May 17, 2022
    Publication date: July 25, 2024
    Applicant: RHODIA OPERATIONS
    Inventors: Marie Plissonneau, Réka Toth, Thierry Le Mercier, Valérie Buissette, Lauriane D'Alencon
  • Patent number: 12018211
    Abstract: Water-in-oil emulsions are provided that include an alkyl propylene diamine and an ethoxylated alcohol as the inverting surfactant, which is present in an amount less than 5 percent by weight of the water-in-oil emulsion.
    Type: Grant
    Filed: June 9, 2020
    Date of Patent: June 25, 2024
    Assignee: RHODIA OPERATIONS
    Inventors: Stanley Gunawan, Zhihua Zhang, Shaopeng Zhang, Igor Pimkov, Zhenxing Cheng, Qi Qu
  • Patent number: 12006470
    Abstract: The present invention relates to compositions for enhanced oil recovery, comprising: (A) internal ketones sulfonated alpha to the ketone group; and (B) unsulfonated internal ketones, with a molar ratio B/(A+B) greater than or equal to the limiting molar concentration of unsulfonated ketones from which a stabilization is observed in the reduction in mobility when the mixture of said ketones is injected into a porous medium.
    Type: Grant
    Filed: July 5, 2019
    Date of Patent: June 11, 2024
    Assignees: RHODIA OPERATIONS, IFP Energies Nouvelles
    Inventors: Mikel Morvan, Pascal Pitiot, Loïc Baussaron, Roberto Company
  • Publication number: 20240182312
    Abstract: A precipitated silica characterised by low silanol ratio. The precipitated silica is in particularly suitable for use as filler in elastomeric mixtures.
    Type: Application
    Filed: April 1, 2022
    Publication date: June 6, 2024
    Applicant: RHODIA OPERATIONS
    Inventors: Cédric Feral-Martin, Pascaline Lauriol-Garbey, Caroline Fayolle, Frédéric Colbeau-Justin
  • Publication number: 20240158250
    Abstract: The invention relates to cerium oxide particles having a roughness index (RI) of at least 5, to a making process thereof and to the use thereof in chemical mechanical polishing applications.
    Type: Application
    Filed: March 10, 2022
    Publication date: May 16, 2024
    Applicant: RHODIA OPERATIONS
    Inventors: Marie Plissonneau, Réka Toth, Lauriane D'Alencon, Valérie Buissette, Mickaël Boudot
  • Publication number: 20240158251
    Abstract: The invention relates to cerium oxide particles having a roughness index RI of at least 5, to a making process thereof and to the use thereof in chemical mechanical polishing applications.
    Type: Application
    Filed: March 10, 2022
    Publication date: May 16, 2024
    Applicant: RHODIA OPERATIONS
    Inventors: Marie Plissonneau, Réka Toth, Lauriane D'Alencon, Valérie Buissette, Mickaël Boudot
  • Publication number: 20240158244
    Abstract: The invention relates to a process for producing a silicate from a plant ash comprising crystalline silica. The process comprises reacting said plant ash with a base in the presence of an additive which is a salt comprising a multivalent anion. The invention also relates to a silicate obtainable from said process and to a process for preparing a precipitated silica from said silicate. The invention also concerns a reaction mixture which can be used for said processes.
    Type: Application
    Filed: October 27, 2023
    Publication date: May 16, 2024
    Applicant: RHODIA OPERATIONS
    Inventors: François Payan, Youssef Chkounda
  • Publication number: 20240140810
    Abstract: The invention relates to a process for producing a silicate from a plant ash comprising crystalline silica, wherein at least a portion of said crystalline silica is cristobalite. The process comprises reacting said plant ash with a base in the presence of an additive which is a salt comprising a sulfur oxyanion. The invention also relates to a silicate obtainable from said process and to a process for preparing a precipitated silica from said silicate. The invention also concerns a reaction mixture which can be used for said processes.
    Type: Application
    Filed: October 27, 2023
    Publication date: May 2, 2024
    Applicant: RHODIA OPERATIONS
    Inventors: François Payan, Youssef Chkounda
  • Patent number: 11964255
    Abstract: Disclosed are a mixed oxide composition based on zirconium and cerium exhibiting a high reducibility, the process for preparing it and its use in the field of catalysis.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: April 23, 2024
    Assignee: RHODIA OPERATIONS
    Inventors: Simon Ifrah, Laure Jeanne Simone Bisson, Benjamin Faure, Rui Miguel Jorge Coelho Marques, Wei Li, Ling Zhu
  • Patent number: 11958989
    Abstract: Described herein is a method for treatment of at least one surface of a substrate at least partially made of aluminum and/or an aluminum alloy, including at least a step of contacting said surface with an acidic aqueous composition (A) including one or more metal compounds (M) selected from the group of titanium compounds, zirconium compounds, and hafnium compounds and one or more linear polymers (P) containing (m1) N,N-dimethyl (meth)acryl amide, (m2) vinylphosphonic acid, and (m3) (meth)acrylic acid in form of their polymerized monomeric units, the one or more linear polymers (P) being included in the acidic aqueous composition (A) in an amount of 50 to 5000 ppm. Also described herein is an acidic aqueous composition (A), a master batch to produce the acidic aqueous composition (A), a method of using the acidic aqueous composition (A) for treating surfaces, and substrates comprising the treated surfaces.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: April 16, 2024
    Assignees: Rhodia Operations, Chemetall GmbH
    Inventors: Lars Sebralla, Nawel Souad Khelfallah, Axel Schoene, Marie-Pierre Labeau, Guillaume Gody