Patents Assigned to Rhodia Operations
  • Method for preparing primary diamines by Kolbe electrolysis coupling reaction
    Patent number: 11198669
    Abstract: The present invention relates to a method for preparing primary diamines from amino acid compounds. Specifically, this invention is related to the preparation of a primary diamine from an amino acid and/or its salt by Kolbe electrolysis coupling reaction.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: December 14, 2021
    Assignees: RHODIA OPERATIONS, BASF FRANCE SAS
    Inventors: Mengjia Wu, Stéphane Streiff, Sergio Mastroianni
  • Amphiphilic polymers for filtrate control
    Patent number: 11198809
    Abstract: The present invention relates to the use of amphiphilic sequenced copolymers as an agent for controlling the filtrate in a fluid (F) injected under pressure into an underground formation, comprising—at least one chain (C) soluble in the fluid (F); and—at least one block (B) that is insoluble in the fluid (F).
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: December 14, 2021
    Assignee: RHODIA OPERATIONS
    Inventors: Arnaud Cadix, David James Wilson
  • Solid formulations suitable for oilfield applications
    Patent number: 11191276
    Abstract: The present invention relates to a solid formulation of soap stick type comprising a primary surfactant, at least one binding agent and at least one dispersant that may especially be an amphoteric surfactant, optionally with additives. The present invention also relates to uses of said formulation, especially for oilfield applications, e.g. for gas well deliquification applications.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: December 7, 2021
    Assignee: RHODIA OPERATIONS
    Inventors: Christopher Raymond Jones, Kevan Hatchman, Alan Christopher Fellows
  • Shear recovery for viscosifying surfactants in stimulation fluids
    Patent number: 11186758
    Abstract: A method of reducing shear recovery time of a viscosifying surfactant fluid system that includes introducing a viscosifying surfactant fluid system into a subterranean formation, wherein the fluid includes a major portion of a surfactant and a hydrophobically-modified associative polymer in a concentration sufficient to shorten the shear recovery time of the fluid system compared to the shear recovery time of the fluid system without the polymer.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: November 30, 2021
    Assignee: RHODIA OPERATIONS
    Inventors: Rose Ndong, Genyao Lin, Subramanian Kesavan, Louis Villafane, Jian Zhou
  • Twin tail amine compounds and their zwitterionic derivatives
    Patent number: 11186538
    Abstract: A compound of general formula (I) or (II), wherein Rn and Rm independently represent a C3-C27 aliphatic group, R1 to R4, which may be the same or different at each occurrence, represent hydrogen or a C1-C8 alkyl group, X1 and X2, which may be the same or different at each occurrence, represent a linear or branched divalent hydrocarbon radical with 1 to 24 carbon atoms which can be optionally substituted and/or interrupted by one or more heteroatoms or heteroatom containing groups, and R5 and R6, which may be the same or different at each occurrence, represent a group selected from —O?, -Alk-CH(OH)—CH2—SO3— and -Alk-CO2— wherein Alk represents an alkylene group.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: November 30, 2021
    Assignee: RHODIA OPERATIONS
    Inventors: Olivier Back, Roberto Company, Hong Liu, Rémy Leroy, Philippe Marion
  • Microfluidic chip for the crystallisation of molecules, preparation method, device comprising said chip and method for crystallisation of molecules
    Patent number: 11174568
    Abstract: A microfluidic chip comprising at least one dialysis crystallisation cell. The cell includes: a substrate made of PMMA; a first level including a tank defined at least partially by the substrate and by an outer wall of the cell, the tank being in fluid communication with a channel for inlet and a channel for outlet of a solution allowing the crystallisation method to be implemented; and a second level including a dialysis chamber defined at least partially by an inner wall of the cell without contact with the substrate and by a dialysis membrane forming an interface between the tank and the dialysis chamber, the inner wall including at least one one-piece portion in which the periphery of the membrane is kept sealed.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: November 16, 2021
    Assignees: UNIVERSITE GRENOBLE ALPES, COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES, LTERNATIVES CENTRE NATIONAL DE LA RECHERCHE, SCIENTIFIQUE RHODIA OPERATIONS, RHODIA LABORATOIRE DU FUTUR, UNIVERSITE DE BORDEAUX
    Inventors: Monika Spano, Jean-Baptiste Salmon, Niels Heinz Junius
  • Block polymers for fluid loss control
    Patent number: 11168026
    Abstract: The present invention relates to the use of a block polymer as fluid loss control agent in a fluid injected under pressure into an oil-bearing rock, where: the fluid comprises solid particles and/or is brought into contact with solid particles within the oil-bearing rock subsequent to its injection, the polymer comprises: a first block which is adsorbed on at least a portion of the particles; and a second block with a composition distinct from that of the first and with a weight-average molecular weight of greater than 10 000 g/mol, for example of greater than 100 000 g/mol, and which is soluble in the fluid.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: November 9, 2021
    Assignee: RHODIA OPERATIONS
    Inventors: Arnaud Cadix, David James Wilson
  • Method of preparing precipitated silicas, novel precipitated silicas, and their uses, in particular for reinforcing polymers
    Patent number: 11168204
    Abstract: The invention relates to a novel process for preparing a precipitated silica, in which: a silicate is reacted with an acidifying agent, so as to obtain a suspension of precipitated silica, said suspension of precipitated silica is filtered, so as to obtain a filter cake, said filter cake is subjected to a liquefaction operation comprising the addition of an aluminum compound, after the liquefaction operation, a drying step is performed, characterized in that at least one polycarboxylic acid is added to the filter cake, during or after the liquefaction operation. The invention also relates to novel precipitated silicas and to uses thereof.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: November 9, 2021
    Assignee: RHODIA OPERATIONS
    Inventors: Cédric Boivin, Laurent Guy, Eric Perin, Kilani Lamiri
  • Controlled radical polymerization in water-in-water dispersion
    Patent number: 11168165
    Abstract: The present invention relates to a method for preparing an aqueous dispersion of water-soluble polymers, which comprises a step (E) of radical polymerization, wherein the following are brought into contact in an aqueous medium (M) in which the synthesised polymer is not soluble: at least one ethylenically unsaturated monomer which is soluble in the aqueous medium (M); at least one source of free radicals; and a reactive stabiliser which comprises: a polymer chain (CP) which is soluble in the medium (M), a group (G) providing the radical polymerization of step (E) with a living and controlled nature, such as, for example, a group carrying a thiocarbonylthio —S(C?S)— group.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: November 9, 2021
    Assignee: RHODIA OPERATIONS
    Inventors: Mathias Destarac, David James Wilson, Silvia Stoilova
  • POLYMER DISPERSION BY CONTROLLED RADICAL POLYMERIZATION
    Publication number: 20210340436
    Abstract: Disclosed is a polymer dispersion prepared by controlled radical polymerization and a use of the polymer dispersion as a friction reducer in oil field processes.
    Type: Application
    Filed: October 11, 2018
    Publication date: November 4, 2021
    Applicant: RHODIA OPERATIONS
    Inventors: Zhenxing Cheng, Zhihua Zhang, Man Chen, Chee Fei Chin, David James Wilson
  • METHOD FOR THE CONTINUOUS PRODUCTION OF A COMPOSITE MATERIAL PROFILE SECTION FROM THERMOPLASTIC POLYMER HAVING HIGH FLUIDITY
    Publication number: 20210339487
    Abstract: The invention relates to a method for continuous production of a composite material profile by injection-pultrusion from at least one reinforcing fabric and at least one thermoplastic polymer having high fluidity, said method being characterized in that: i) said fabric is continuously pulled with a pulling speed of at least 0.4 m.min?1 in the course of said process; ii) the impregnation stage is performed by injection of a polymeric composition having high fluidity through the fabric; iii) the profile is then shaped with a specific thermal profile. The invention also relates to a profile obtained according to the method of the invention and a composite article comprising such a profile the curvature whereof may be modified in its curvature by bending and/or its profile by rotational molding.
    Type: Application
    Filed: May 19, 2021
    Publication date: November 4, 2021
    Applicants: RHODIA OPERATIONS, CENTRE TECHNIQUE DES INDUSTRIES MECANIQUES (CETIM)
    Inventors: Gilles Orange, Didier Tupinier, Philippe Papin, Mickaël Aubry, Jean-Michel Lebrun, Sébastien Comas-Cardona
  • Inorganic oxide material
    Patent number: 11154840
    Abstract: The present teachings are directed to inorganic oxide materials that include Al2O3, CeO2, and at least one of MgO and Pr6O11. The present teachings are also directed to catalysts having at least one noble metal supported on these inorganic oxide materials, as well as methods for treating exhaust gases from internal combustion engines using such catalysts.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: October 26, 2021
    Assignee: RHODIA OPERATIONS
    Inventors: Qiang Zhao, Olivier Larcher, Barry W. L. Southward, Francis Francis, Thomas English, Fabien Ocampo
  • Process for the preparation of precipitated silicas, precipitated silicas and their uses, in particular for the reinforcement of polymers
    Patent number: 11136462
    Abstract: The invention relates to a process for the preparation of a novel precipitated silica, wherein: a silicate is reacted with an acidifying agent, so as to obtain a silica suspension; said silica suspension is filtered, so as to obtain a filter cake; said filter cake is subjected to a liquefaction operation, in the absence of an aluminium compound; wherein a mixture of polycarboxylic acids is added to the filter cake, during or after the liquefaction operation. It also relates to novel precipitated silicas and to their uses.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: October 5, 2021
    Assignee: RHODIA OPERATIONS
    Inventors: Cédric Boivin, Laurent Guy, Eric Perin, Kilani Lamiri
  • Sulfate-free personal care compositions and methods for using such compositions
    Patent number: 11129786
    Abstract: The present invention relates to sulfate-free aqueous personal care composition comprising a surfactant system comprising at least one methyl oleoyl taurate, one isethionate and one alkoxylated sulfosuccinate, and from about 0.2 pbw to about 15 pbw of a conditioning agent. It is also directed toward the use of such a composition for washing keratin substrates, in particular the hair or the scalp.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: September 28, 2021
    Assignee: RHODIA OPERATIONS
    Inventors: Monique Martine Françoise Adamy, Jennifer Jessika Cazette
  • METHOD OF ACIDIZING A SUBTERRANEAN FORMATION COMPRISING A GELLING AGENT
    Publication number: 20210292639
    Abstract: Methods of acidizing a subterranean formation penetrated by a wellbore that include the steps of (a) injecting into the wellbore at a pressure below subterranean formation fracturing pressure a treatment fluid having a first viscosity and including an aqueous acid and a gelling agent selected from the group consisting of Formulas I-XI and combinations thereof; (b) forming at least one void in the subterranean formation with the treatment fluid; and (c) allowing the treatment fluid to attain a second viscosity that is greater than the first viscosity.
    Type: Application
    Filed: June 7, 2021
    Publication date: September 23, 2021
    Applicant: RHODIA OPERATIONS
    Inventors: Rose NDONG, Olivier BACK, Pascal HERVE, Jian ZHOU
  • Polymeric systems for particle dispersion
    Patent number: 11118100
    Abstract: The present disclosure provides polymeric systems that are able to undergo fast hydration and are useful for maintaining particle dispersions for extended periods of time.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: September 14, 2021
    Assignee: RHODIA OPERATIONS
    Inventors: Changmin Jung, Lingjuan Shen, Christopher Smith, Hoang Van Le, Jian Zhou, Genyao Lin
  • Process for the decarboxylative ketonization of fatty acids or fatty acid derivatives
    Patent number: 11111190
    Abstract: Process (P) for the decarboxylative ketonization of fatty acids, fatty acid derivatives or mixtures thereof in the liquid phase with metal compounds as catalyst wherein the fatty acids, fatty acid derivatives or mixtures thereof are added sequentially. Downstream chemistry can be realized starting from internal ketones obtained by process (P), especially in order to design and develop new surfactants.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: September 7, 2021
    Assignee: RHODIA OPERATIONS
    Inventors: Olivier Back, Rémy Leroy, Philippe Marion
  • Method for preparing stable composition with perfume
    Patent number: 11111460
    Abstract: The present invention relates to method for preparing composition containing at least a quaternary ammonium compound, a cationic polysaccharide, a fragrance material or perfume, a nonionic surfactant, and optionally a nonionic polysaccharide. The method notably comprises a step of preparing a premix of the fragrance material or perfume and the nonionic surfactant. Said composition may notably be used for fabric conditioning.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: September 7, 2021
    Assignee: RHODIA OPERATIONS
    Inventors: Hai Zhou Zhang, Nikolay Christov, Da Wei Jin, Lin He
  • Soil additives for promoting seed germination, for prevention of evaporation and methods for use
    Patent number: 11111436
    Abstract: Disclosed are methods of improving germination rates of plants/crops, as well as preventing or arresting water evaporation loss from targeted soil areas, which allows for improved water usage efficiency by crops, plants, grasses, vegetation, etc.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: September 7, 2021
    Assignee: RHODIA OPERATIONS
    Inventors: Galder Cristobal, Pascal Metivier, Jean-Christophe Castaing, Pengfei Ji, Zhiyun Chen
  • Method for preparing precipitated silicas, novel precipitated silicas, and uses thereof, particularly for polymer reinforcement
    Patent number: 11104583
    Abstract: The invention relates to a process for preparing a precipitated silica, to precipitated silicas, and to uses thereof. The process of the invention generally includes reacting a silicate with an acidifying agent, so as to obtain a suspension of precipitated silica; filtering the precipitated silica to obtain a filter cake; subjecting the filter cake to a liquefaction operation to form a second filter cake; and drying the second filter cake.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: August 31, 2021
    Assignee: RHODIA OPERATIONS
    Inventors: Cédric Boivin, Laurent Guy, Eric Perin, Kilani Lamiri