Abstract: A composition including: a PF polymer including units derived from vinylidene fluoride; and a PA polymer including units derived from a (meth)acrylic monomer and units including at least one associative group chosen among imidazolidonyl, triazolyl, triazinyl, bis-ureyl and ureido-pyrimidyl groups; in solution in a solvent. Also, the use of this composition for the production of electronic devices.
Type:
Grant
Filed:
June 13, 2018
Date of Patent:
November 28, 2023
Assignee:
ARKEMA FRANCE
Inventors:
Marie-France Delamotte, Stéphane Dornier, Manuel Hidalgo, Thibaut Soulestin
Abstract: A process for the preparation of a semifinished product including a PAEK-based resin and reinforcing fibers, including the stages of: a. preparation of a dispersion including a PAEK-based resin in the pulverulent form dispersed in an aqueous phase including a surfactant; b. bringing the reinforcing fibers into contact with said aqueous dispersion; c. drying the fibers impregnated with dispersion; and d. heating the impregnated fibers to a temperature sufficient for the melting of the resin, so as to form a semifinished product, wherein the surfactant is a thermally stable surfactant. Also, semifinished products capable of being obtained from the process and their use in the manufacture of composite materials.
Abstract: The use of a heat-transfer composition including from more than 0% to 40% by weight of a refrigerant including a compound chosen from halogenated hydrocarbons, perhalogenated compounds, fluorinated ketones, fluorinated ethers and the combinations thereof, and from 60% to less than 100% by weight of a dielectric fluid, in order to regulate the temperature of a battery, the battery including energy storage cells immersed in the heat-transfer composition in the liquid state, and the heat-transfer composition undergoing essentially no change of state.
Abstract: A new class of alkoxyamines, exhibiting improved stability on storage, especially in the presence of monomers and/or of solvent is described, particularly where the alkoxylamines are a new class of oligomeric alkoxyamines, which are obtained by addition of one or more monomeric entities to an alkoxyamine.
Abstract: The invention relates to a structure comprising at least one layer (1) comprising a BACT/XT copolyamide in which: —BACT is a unit with an amide moiety having a molar ratio of between 20 and 70%, preferably between 25 and 60%, and more preferably between 35 and 55%, where BAC is chosen from 1,3-bis (aminomethyl) cyclohexyl (1,3 BAC), 1,4-bis (aminomethyl) cyclohexyl (1,4 BAC) and a mixture of same, and T is terephthalic acid, —XT is a unit with an amide moiety having a molar ratio of between 30 and 80%, preferably between 40 and 75%, and more preferably between 45 and 65%, where X is a C9 to C18, preferably C9, C10, C11 and C12, linear aliphatic diamine, and where T is terephthalic acid, preferably a C10, C11 and C12 terephthalic acid.
Type:
Grant
Filed:
July 10, 2017
Date of Patent:
November 14, 2023
Assignee:
ARKEMA FRANCE
Inventors:
Mathieu Capelot, Nicolas Dufaure, Thierry Briffaud
Abstract: The present invention relates to a process for odorizing a cryogenic fluid, comprising a step a) of continuously feeding an odorizing agent in liquid or gaseous form into a feed zone, said feeding being carried out at a temperature above the temperature of the cryogenic fluid and above the crystallization temperature of the odorizing agent, a step b) of feeding said odorizing agent in liquid or gaseous form from step a) into a buffer zone in which the liquid or gaseous odorizing agent is brought to a temperature of about the temperature of the cryogenic fluid, and a step c) of feeding said odorizing agent cooled in step b) into the contact zone, wherein said odorizing agent comes into contact with said cryogenic fluid to be odorized. The present invention also relates to an odorizing device for implementing said odorizing process.
Type:
Grant
Filed:
February 25, 2022
Date of Patent:
November 14, 2023
Assignee:
Arkema France
Inventors:
Jean-Benoît Cazaux, Laurent Barbon, Patrick Charles
Abstract: The present invention relates to a foamable composition comprising an ethylene-vinyl acetate (EVA) copolymer and for a copolymer of ethylene and of alkyl (meth)acrylate and a branched copolymer containing polyamide blocks and polyether blocks, to a process for producing said composition and to the use of said composition. The present invention also relates to a foam, to a process for producing said foam and to the use of said foam.
Abstract: A composition including a copolymer containing polyamide blocks and polyether blocks including at least one carboxylic acid chain end having reacted with an epoxide function, the process for preparing same, and also the use thereof. A foam formed from this composition, the process for preparing same, and the use thereof.
Abstract: The present invention relates to a copolymer having polyamide blocks and having polyether blocks (PEBA) which can be used for the manufacture of an article, preferably a foamed article. The invention also relates to expanded particles prepared from said copolymer and to the manufacture of a foamed article from said expanded particles.
Abstract: The use of a heat-transfer composition comprising from 20% to less than 100% by weight of a refrigerant including a compound chosen from halogenated hydrocarbons, perhalogenated compounds, fluorinated ketones, fluorinated ethers and also their combinations, and from more than 0% to 80% by weight of a dielectric fluid, for cooling a battery, the battery including energy storage cells immersed in the heat-transfer composition, and the heat-transfer composition undergoing evaporation on contact with the energy storage cells.
Abstract: Multi-layer structure intended for storing hydrogen, including, from the inside out, a sealing layer and a composite reinforcing layer, the innermost composite reinforcing layer being wound around the outermost adjacent sealing layer, at least the innermost sealing layer being made of a composition including: a. 20.5 to 99.845% by weight of a polyamide; b. 0.005 to 0.5% by weight of a catalyst; c. 0.05 to 1% by weight of a heat stabilizer; d. 0.1 to 3% by weight of a oligo- or poly-carbodiimide; e. 0 to 1.5% by weight of a plasticiser; f. 0 to less than 15% by weight of a polyolefin; g. 0 to 30% of an additive, and at least one of the composite reinforcing layers of a fibrous material in the form of continuous fibres impregnated with a composition including at least one polymer P2j, j=1 to m, m being the number of reinforcing layers.
Abstract: The present invention relates to a foam of polymers comprising an ethylene-vinyl acetate (EVA) copolymer and/or a copolymer of ethylene and of alkyl (meth)acrylate and a copolymer containing polyamide blocks and polyether blocks (PEBA). The present invention also relates to a process for producing such a foam and also to the use of said foam, in particular in shoes.
Abstract: The invention relates to a liquid composition comprising: a) a (meth)acrylic polymer, b) a (meth)acrylic monomer, and c) a maturation agent selected from a metal oxide or a metal hydroxide, said (meth)acrylic polymer comprising a monomer which carries a carboxylic acid function, and/or said (meth)acrylic monomer carrying a carboxylic acid function, and said liquid composition having a dynamic viscosity of between 10 mPa·s and 10 000 mPa·s at 25° C.
Abstract: A method for analyzing semifinished products including reinforcing fibers having an essentially unidirectional orientation and a thermoplastic resin, including a first and a second test for measuring the thickness of a stack of semifinished products over time during the compression thereof and for determining the equivalent homogeneous viscosity of the stack; determining the total thickness reduction of the stack of semifinished products during the first test; determining the ratio of the equivalent homogeneous viscosity of the stack from the second test to the equivalent homogeneous viscosity of the stack from the first test; and determining the ratio of the thickness of the stack from the first test after a reference time starting from the moment of the onset of melting of the stack of semifinished products, to the thickness of the stack from the first test at the moment of the onset of melting of the stack of semifinished products.
Abstract: Polymeric composite composition including two zones (Z1) and (Z2), at least one zone of the zones (Z1) or (Z2) includes a reinforcing material (RM1), while the other zone of the zones (Z1) or (Z2) includes no reinforcing material or a reinforcing material (RM2) that is different from reinforcing material (RM1). In particular, polymeric composite composition including two zones (Z1) and (Z2) that are in direct contact, at least one zone of the zones (Z1) or (Z2) includes a reinforcing material (RM1), while the other zone of the zones (Z1) or (Z2) includes no reinforcing material or a reinforcing material (RM2) that is different from reinforcing material (RM1). Also, a process for manufacturing such a polymeric composite composition and the use. A process for manufacturing articles in form of mechanical parts or structural elements made of composite material including the polymeric composite composition.
Type:
Application
Filed:
December 21, 2020
Publication date:
November 2, 2023
Applicant:
ARKEMA FRANCE
Inventors:
Pierre GERARD, Alexander ZOLLER, Guillaume CLEDAT
Abstract: Provided is a compound which may be obtained by esterification condensation of components as described herein. The compound may be used as a collector for ore enrichment (flotation), as a corrosion inhibitor, as a viscosity enhancer, emulsifier or stabilizer that is useful for the oil and gas industry, as a clay modifier, as an adhesion promoter, as an antiagglomerant additive, as an additive in haircare products, as a fabric softener, as an antistatic agent in polymers, as a bitumen emulsion additive, as a detergency cationic agent, as a fertilizer additive, as an antiagglomerant for hydrates, as a lubrication or adhesion-promoting additive, for example.
Type:
Grant
Filed:
August 8, 2018
Date of Patent:
October 31, 2023
Assignee:
Arkema France
Inventors:
Eric Jorda, Alain Baloche, Gilles Barreto, Jean-Phillippe Gillet
Abstract: A process for purifying raw carbon nanotubes to obtain a content in metallic impurities of between 5 ppm and 200 ppm. The process includes an increase in the bulk density of the raw carbon nanotubes via compacting to produce compacted carbon nanotubes. The process further includes sintering the compacted carbon nanotubes by undergoing thermal treatment under gaseous atmosphere in order to remove at least a portion of the metallic impurities contained in the raw carbon nanotubes, and consequently producing purified carbon nanotubes. These purified carbon nanotubes are directly usable as electronic conductors serving as basis additive to an electrode material without requiring any subsequent purification step. The electrode material can then be used to manufacture an electrode destined to a lithium-ion battery.
Type:
Application
Filed:
April 10, 2023
Publication date:
October 26, 2023
Applicants:
HYDRO-QUÉBEC, Arkema France
Inventors:
Ali DARWICHE, Martin DONTIGNY, Naoyuki KONDO, Abdelbast GUERFI, Karim ZAGHIB, Julien BEAUSOLEIL, Alexander KORZHENKO
Abstract: The invention relates to a compound of following formula (I), and also to the addition salts thereof with an organic or mineral base, the solvates such as hydrates and the mixtures thereof; to the use thereof as a surfactant, wetting agent, detergent, emulsifier, dispersant, corrosion inhibitor, plasticizer, sequestering agent, ionic liquid, stabilizer, lubricant, bitumen additive, gelling agent in oils, flotation collector for ores, adjuvant in the manufacture of plastic objects, anti-static agent, additive for fertiliser coverings and for enhanced oil recovery, and also to the compositions comprising at least one compound of formula (I) and/or a salt thereof, alone or as a mixture.
Type:
Application
Filed:
September 23, 2022
Publication date:
October 19, 2023
Applicant:
Arkema France
Inventors:
Juan Antonio Gonzalez Leon, Jean-Philippe Gillet, Gilles Barreto, Carl Bouret
Abstract: The present invention relates to a moulding composition comprising by weight: (A) 65% to 98%, in particular 65% to 95%, of at least one copolyamide with amide units (Ba1) and polyether units (Ba2), (B) 2% to 30%, in particular 5% to 30%, of hollow glass reinforcement, (C) 0 to 5%, preferably 0.1% to 2%, of at least one additive, the sum of the proportions of each constituent (A) + (B) + (C) of the composition being equal to 100%.
Type:
Application
Filed:
July 19, 2021
Publication date:
October 19, 2023
Applicant:
ARKEMA FRANCE
Inventors:
Guillaume VINCENT, Mathieu SABARD, Yu SUN
Abstract: The present invention relates to a composition of at least one sulfonic acid in combination with an effective amount of at least one nitrosyl compound, acting as inhibitor of corrosion of metals by said at least one sulfonic acid.
Type:
Grant
Filed:
August 30, 2018
Date of Patent:
October 17, 2023
Assignee:
ARKEMA FRANCE
Inventors:
Lionel Renaud, Bernard Monguillon, Jean-Alex Laffitte, Denis Siguret, Pierre Mekarbane