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Arkema France patents


Recent patent applications related to Arkema France. Arkema France is listed as an Agent/Assignee. Note: Arkema France may have other listings under different names/spellings. We're not affiliated with Arkema France, we're just tracking patents.

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Multilayer tubular structure having better resistance to extraction in biofuel and use thereof

with the proviso that when the outer layer comprises at least three polyamides, at least one of the polyamides A, B and C is excluded.... Arkema France

Use of alkane sulfonic acid for cleaning in the sugar industries

The present invention concerns the use of at least one alkane sulfonic acid of formula R—SO3H, in which R represents a linear or branched saturated hydrocarbon chain comprising 1 to 4 carbon atoms, for cleaning solid deposits containing at least one aconitic acid salt. The invention also concerns a method... Arkema France

E-1-chloro-3,3,3-trifluoropropene production process from 1,1,3,3-tetrachloropropene

A production process for the production of E-1-chloro-3,3,3-trifluoropropene, the process including at least one stage during which 1,3,3,3-tetrachloropropene reacts with anhydrous hydrofluoric acid in the liquid phase, in the absence of a catalyst, with an HF/1,1,3,3- tetrachloropropene molar ratio between 3 and 20 inclusive, at a temperature between 50° C.... Arkema France

Vehicle heating and/or air conditioning method

A method for the heating and/or air conditioning of the passenger compartment of an automobile using a reversible cooling loop in which flows a coolant containing 2,3,3,3-tetrafluoropropene. The method is particularly useful when outdoor temperature is lower than −15° C. The method can be used for hybrid automobiles designed for... Arkema France

Improved process for producing (meth)acrylic acid

The invention is directed to a process for recovering/purifying (meth)acrylic acid which does not use azeotropic solvent and is based on the use of two columns for purifying a reaction mixture comprising (meth)acrylic acid. The process according to the invention includes a dry vacuum pump condensation system, which makes it... Arkema France

Thermal conversion vessel used in a process for amidification of acetone cyanohydrin

Such vessel allows obtaining a high yield thermal conversion in very safe conditions.... Arkema France

Heat-transfer fluid for a centrifugal compressor

A process for cooling or heating a fluid or a body by means of a vapour compression circuit including a centrifugal compressor and containing a heat-transfer fluid, the heat-transfer fluid including at least two compounds selected from 2,3,3,3-tetrafluoropropene, 1,3,3,3-tetrafluoropropene, 1,1,1,2-tetrafluoropropene, 1,1-difluoroethane and 3,3,3-trifluoropropene, in which: the ratio of the Mach... Arkema France

Multilayer tubular structure having better resistance to extraction in biofuel and use thereof

with the proviso that when the inner layer comprises at least three polyamides, at least one of the polyamides A, B and C is excluded.... Arkema France

Electrodes of li-ion batteries with improved conductivity

The invention relates to the field of storing electrical energy in secondary lithium batteries of the Li-ion type. More precisely, the invention relates to an electrode material for a Li-ion battery, to the method for the production thereof, and to the use of same in a Li-ion battery. The invention... Arkema France

Copolyamide, composition comprising such a copolyamide and uses thereof

The invention also relates to a composition comprising this copolyamide and to the use of this copolyamide and of such a composition.... Arkema France

Process for the preparation of fluoroolefin compounds

The subject of the invention is a process for the preparation of fluoroolefin compounds. It relates more particularly to a process for manufacturing a (hydro)fluoroolefin compound comprising (i) bringing at least one compound comprising from three to six carbon atoms, at least two fluorine atoms and at least one hydrogen... Arkema France

Thermoplastic composition and prepreg, composite material made of said prepreg, and uses of said composite material

The present invention relates to the field of thermoplastic composite materials. Specifically, the invention relates to a fluorinated, flame-retardant thermoplastic composition, to the prepreg prepared from said composition, to the composite material containing said prepreg, to the methods enabling manufacture, and to the uses of said material. The invention also... Arkema France

Pressure sensitive adhesives

Pressure sensitive adhesive (PSA) compositions that include at least one urethane (meth)acrylate oligomer having a molecular weight between about 2,000 g/mol and about 50,000 g/mol and an OH number of from 0.01 mg KOH/g to 100 mg KOH/g, at least one mono (meth)acrylate functional monomer and at least one tackifying... Arkema France

High efficiency diffusion lighting coverings

The invention relates to high efficiency diffusion lighting coverings useful in LED lighting applications. The diffusing lighting coverings are made of organic diffusing particles homogeneously dispersed in a transparent polymer matrix. The primary organic diffusing particles are refractive index mis-matched to the matrix polymer. The refractive index contrast between the... Arkema France

Use of a liquid composition of carbon-based nanofillers for lead battery electrode formulations

Another subject-matter of the invention is a lead battery electrode obtained by using the said composition.... Arkema France

Solid composition of carbon nanofillers for formulations used in lead batteries

The invention relates to the field of lead batteries. More particularly, it relates to a solid composition comprising between 5 and 60 wt. % of carbon nanofillers, preferably carbon nanotubes, dispersed homogeneously in a hydrosoluble polymer in the presence of at least one cationic component selected from alkali or alkaline-earth... Arkema France

Copolymer comprising at least three blocks: polyamide blocks, peg blocks and other blocks

The present invention relates to elastomeric thermoplastic polymers (ETP) and especially technical polymers with high added value used in varied sectors, such as electronics, motor vehicles or sport. The present invention more particularly relates to copolymers containing polyether blocks and polyamide blocks, abbreviated as “PEBA”, which have good antistatic properties.... Arkema France

Polymeric composition absorbing, comprising and releasing an odoriferous active compound, preparing it and its use

The present invention concerns also objects or articles comprising a polymeric elastomeric phase in form of an acrylic block copolymer and an odoriferous active compound, methods of absorption of odoriferous active compound by said objects and articles and releasing said odoriferous active compound over a given period of time.... Arkema France

Polyamide composition with delayed combustibility

The invention relates to a composition which includes: at least one polyamide; at least one melamine derivative as a fire-retardant agent; optionally at least one polyol containing at least four alcohol functional groups; and optionally at least one reinforcement in the form of a fiber. The invention also relates to... Arkema France

Pressure sensitive compositions based on a modified rubber polymer aqueous dispersion

with said grafted rubber polymeric particles being grafted in an aqueous dispersion by a part of said monomeric composition b) as defined above. The invention covers a process of preparation of said dispersion, an adhesive composition comprising said dispersion, the use of said dispersion in pressure sensitive adhesives, and the... Arkema France

Process for the separation of 2-chloro-1,1-difluoroethane and trans-dichloroethylene

The invention relates to the separation of a mixture comprising 2-chloro-1,1-difluoroethane (R142) and trans-dichloroethylene (TDCE) by extractive distillation and more particularly to a separation process wherein the TDCE is removed selectively by extractive distillation, thus leading to purified 2-chloro-1,1-difluoroethane.... Arkema France

Electrolyte formulation for lithium-ion batteries

The invention concerns an electrolyte composition, comprising: —a lithium bis(fluorosulfonyl)imide salt and/or a lithium 4,5-dicyano-(trifluoromethyl) imidazolate salt; and —a solvent of formula (I): in which: —n is an integer of between 0 and 15, —R1, R2 and R3 represent, independently, a halogen atom or a C1 to C6 linear or... Arkema France

Zeolite adsorbents having a high external surface area and uses thereof

The present invention concerns the use, for gas separation and/or gas drying, of at least one zeolite adsorbent material comprising at least one type A zeolite, said adsorbent having an external surface area greater than 20 m2.g−1, a non-zeolite phase (PNZ) content such that O<PNZ≦30%, and an Si/Al atomic ratio... Arkema France

Process for reducing the assembly time of ordered films of block copolymer

The present invention relates to a process for reducing the assembly time comprising a block copolymer (BCP). The invention also relates to the compositions used to obtain these ordered films and to the resulting ordered films that can be used in particular as masks in the lithography field.... Arkema France

Zeolite adsorbents having a high external surface area and uses thereof

The present invention concerns the use, for gas separation, of at least one zeolite adsorbent material comprising at least one FAU zeolite, said adsorbent having an external surface area greater than 20 m2·g−1, a non-zeolite phase (PNZ) content such that 0<PNZ≦30%, and an Si/Al atomic ratio of between 1 and... Arkema France

Reclamation of noble products in a producing (meth)acrylic ester

The invention relates to a method for producing a (meth)acrylic ester with improved productivity, by transesterfication of a light alkyl (meth)acrylate with a heavy alcohol. The method of the invention includes the recycling of noble products recovered after the thermal treatment of heavy fractions generated during the synthesis, said thermal... Arkema France

Catalytic systems for thermosetting resins which are deformable in the thermoset state

The invention relates to a composition containing at least one catalyst (C1) containing at least one atom of an element (M1) chosen from: Al, Sc, Ti, Mg, Mn, Fe, Co, Ni, Cu, Zn, Zr, Sn, Hf, Pb, Si, Sb and In; a catalyst (C2) comprising at least one atom of... Arkema France

Composite material via in-situ polymerization of thermoplastic (meth)acrylic resins and its use

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... Arkema France

Process for reducing the defects in an ordered film of block copolymer

The present invention relates to a process for reducing the number of defects in an ordered film comprising a block copolymer (BCP). The invention also relates to the compositions used to obtain these ordered films and to the resulting ordered films that can be used in particular as masks in... Arkema France

Method for producing an object by melting a polymer powder in a powder sintering device

A method for producing an object by melting a polymer powder in a powder sintering device. For example, a method for producing an object by melting a polymer powder in a powder sintering device under a laser beam, implementing a rheological analysis of the polymers, in order to determine the... Arkema France

Low-temperature radical polymerisation of alkoxyamines

The present invention relates to a process for the radical polymerization of alkoxyamines at low temperature, typically at temperatures as low as −50° C., in the presence of a photoinitiator.... Arkema France

Composition comprising a multistage polymer, its preparation and its use

The present invention relates to a polymer composition comprising a (meth)acrylic polymer and a multistage polymer. In particular the present invention it relates to polymer composition comprising a (meth)acrylic polymer and a multistage polymer that can be used as a masterbatch. More particularly the present invention relates also to a... Arkema France

Portable device for the in-line measurement of the hydrogen sulfide concentration of an off-gas

The invention relates to a device and to a method for continuously measuring the hydrogen sulfide concentration of an off-gas by means of a detachable device suitable for being temporarily connected to equipment producing the off-gas. The method comprises a step of measuring the absorption of electromagnetic radiation by the... Arkema France

Extrusion agent for polyolefins extrudable in the form of fibres

The invention relates to an extrusion-assisting agent containing low-viscosity thermoplastic fluorinated polymers and preferably not containing a synergist. The invention also relates to the use of the extrusion agent for extrusion in the form of monofilament or multifilament fibres or non-woven materials, and to the extrusion method.... Arkema France

12/28/17 / #20170369622

Water-soluble block copolymer and use thereof as a support material for 3d printing

said copolymer being extrudable and granulable, said copolymer being partially or totally soluble in water or in aqueous medium, and the mass proportion of the thermoplastic block being greater than 50% of the weight of said copolymer.... Arkema France

12/28/17 / #20170369623

Water-soluble diblock copolymer

The invention relates to the field of block copolymers, particularly to the field of water-soluble or water-dispersible copolymers consisting of two blocks, of which the major block is a hydrophilic thermoplastic block. More particularly, the invention relates to a block copolymer consisting of a partially or totally hydrophilic elastomeric block,... Arkema France

12/28/17 / #20170369696

Multistage polymer composition, its preparation, its use and composition comprising it

The present invention relates to a multistage polymer in form of polymeric particles, its composition and its process of preparation. The invention also relates to a multistage polymer in form of polymeric particles made by a multistage process while the last stage comprises a polymer with a low molecular weight.... Arkema France

12/21/17 / #20170361263

Use of coatings made from aqueous polymer dispersions having a core/shell structure for capturing volatile organic compounds such as aldehydes

P2, representing 40% to 85% by weight of P1+P2 and comprising in its structure units from at least one monomer M3 bearing a polymerisable ethylenic unsaturation and, in addition, a ureido functional group or a functional group having a mobile hydrogen alpha to a ketonic carbonyl.... Arkema France

12/21/17 / #20170361547

Molding device for the manufacture of composite components from liquid polymer resin by high-pressure injection

The invention relates to a molding device (1) and a method for the manufacture of structured or semistructured composite components comprising a polymer resin (50) and a fibrous substrate (51). According to the invention, the device comprises a mold (2) comprising a bottom and a lateral surface, a part (10)... Arkema France

12/21/17 / #20170362369

Low-temperature radical polymerisation of alkoxyamines

The present invention relates to a process for the radical polymerization of alkoxyamines at low temperature, typically at temperatures as low as −50° C., in the presence of a nitroxide reducing agent.... Arkema France

12/21/17 / #20170362395

Polymer composition, its preparation, its use and composition comprising it

The present invention relates to a polymer composition comprising an epoxy resin and a multistage polymer. In particular the present invention it relates to polymer composition comprising an epoxy resin and a multistage polymer that can be used as a masterbatch. More particularly the present invention relates also to a... Arkema France

12/14/17 / #20170355154

Molding device for the manufacture of composite components using liquid polymer resin

The invention relates to a molding device (1) and a method for the manufacture of structured or semistructured composite components comprising a polymer resin (50) and a fibrous substrate (51). According to the invention, the device comprises a mold (2) comprising a bottom and a lateral surface, a part (10)... Arkema France

12/14/17 / #20170355660

Multifunctional acrylic ether-ester products modified with carboxylic anhydride or its polyacid form, process for preparing same and associated crosslinkable compositions

The invention also relates to a process for preparing said product, to crosslinkable compositions comprising same and to the use thereof in coatings, sealing, moulding or composite compositions, chemical sealing compositions, 3D printing compositions or compositions for 3D objects produced layer-by-layer. One particular advantage of these compositions is their low... Arkema France

12/14/17 / #20170355801

Multistage polymer, its composition, its preparation, its use and composition comprising it

The present invention relates to a multistage polymer, its composition, its process of preparation, and its use as impact modifier in thermoplastic compositions. More particularly the present invention relates a process for manufacturing a multistage polymer, a multistage polymer in thermoplastic compositions, which provides the composition having satisfying thermal stability.... Arkema France

12/14/17 / #20170355802

Process of manufacturing a multistage polymer, its composition, its use and composition comprising it

The present invention relates to a multistage polymer, its composition, its process of preparation, and its use as impact modifier in thermoplastic compositions. More particularly the present invention relates to a process for manufacturing a polymer composition comprising a multistage polymer and its use as impact modifier in thermoplastic compositions.... Arkema France

12/14/17 / #20170355870

Composition based on electroactive terpolymer

The invention relates to a composition comprising at least one electroactive fluorinated terpolymer, and at least one second polymer compatible with the electroactive fluorinated terpolymer and having a glass transition temperature lower than that of the electroactive fluorinated terpolymer. The invention also relates to a method for producing said composition,... Arkema France

12/07/17 / #20170349714

Production of polyamide powders by ester aminolysis

A method for producing a polycondensate powder dispersion, characterised in that it includes at least one step of polycondensation: i) of at least one diester and at least one diamine, and/or ii) at least one amino ester, while stirring, in a solvent that can solubilise both the diamine and the... Arkema France

12/07/17 / #20170352873

Active electrode material for a li-s battery

The present invention relates to an active material suitable for the production of an electrode, in particular an electrode for a Li—S battery. The active material according to the invention comprises carbon nanofillers homogeneously dispersed in the substance of a sulphur material, the active material being obtainable according to a... Arkema France

11/30/17 / #20170342024

Monofunctional or multifunctional urethane acrylate oligomers without isocyanates

The invention also relates to a process for the preparation of the said oligomer in two stages, to the intermediate product c) and to the use of the said urethane oligomer in crosslinkable compositions, in particular in coating compositions, adhesive compositions, compositions for systems for the layer-by-layer manufacture of 3D... Arkema France

11/30/17 / #20170342270

Thermoplastic composition made of polyphenylene sulphide and polyamide-grafted polyolefin

The present invention relates to a composition that comprises a mixture of polymers, which comprises: a first polymer comprising polyphenylene sulphide, making up 55 wt % to 95 wt % of the mixture; a thermoplastic modifier, making up 5 wt % to 45 wt % of the mixture; optionally one... Arkema France

11/23/17 / #20170332617

Self-adhesive film for soil fumigation

The present invention relates to the use of a fumigant barrier film for treating soil by fumigation, said film having, on at least one portion of the outer surface thereof or on at least one portion of the inner surface thereof or on at least one portion of the outer... Arkema France

11/23/17 / #20170333334

Removable coating systems and methods

Disclosed herein are coating compositions that may include at least one urethane (meth)acrylate oligomer having a molecular weight between about 2,000 g/mol and about 50,000 g/mol and at least one cycloaliphatic (meth)acrylate. The coating compositions may also optionally include at least one photo-initiator, adhesion promoter, pigment, dye and/or plasticizer. The... Arkema France

11/23/17 / #20170335101

Composition based on poly (arylene ether ketone) having improved properties

A composition based on poly(ether ether ketone) (PEEK) including poly(ether ketone ketone) (PEKK), characterized in that the poly(ether ketone ketone) (PEKK) includes a mixture of terephthalic and isophthalic units, the percentage by weight of terephthalic units, with respect to the sum of the terephthalic and isophthalic units, being between 55... Arkema France

11/23/17 / #20170335107

Thermoplastic composite material made of a semi-crystalline polyamide and manufacturing same

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... Arkema France

11/16/17 / #20170327442

Process for the preparation of 1-chloro-2,2-difluoroethane

The present invention provides a process for the preparation of 1-chloro-2,2-difluoroethane comprising the following stages: (i) dehydrofluorinating 1,1,1-trifluoro-2-chloroethane to form a product stream comprising 1-chloro-2,2-difluoroethylene, optionally separation of 1-chloro-2,2-difluoroethylene from the product stream and (ii) hydrogenating 1-chloro-2,2-difluoroethylene obtained in stage (i) to give 1-chloro-2,2-difluoroethane.... Arkema France

11/09/17 / #20170321009

Semi-aromatic polyamide preparation method

An industrial method for preparing a semi-aromatic copolyamide having a general formula A/10.T, wherein: A denotes a unit obtained by polycondensing a lactam or a C9-C12 amino acid; and 10.T denotes a unit obtained by polycondensing 1.10-decanediamine and terephtalic acid. The method includes a step for polycondensing the comonomers, the... Arkema France

11/02/17 / #20170312938

Process for densification of poly(arylene ether ketone) powders

Process for densification of a poly(arylene ether ketone) (PAEK) powder or of a mixture of poly(arylene ether ketone) (PAEK) powders, the process being mixing the powder or the mixture of powders, in a mixer equipped with a rotary stirrer including at least one blade, for a period of between 30... Arkema France

11/02/17 / #20170313638

Catalytic gas phase fluorination

The invention relates to a fluorination process, alternately comprising reaction stages and regeneration stages, wherein the reaction stages comprise reacting a chlorinated compound with hydrogen fluoride in gas phase in the presence of a fluorination catalyst to produce a fluorinated compound, and the regeneration stages comprise contacting the fluorination catalyst... Arkema France

11/02/17 / #20170313843

Transformation-stable composition comprising viscous polyamide, production thereof and use of same

The invention relates to the use of at least one catalyst, at least one copper heat stabiliser and at least one oligo- or poly-carbodiimide with a matrix including at least one polyamide, in order to form a composition that has a good melt viscosity and is stable during transformation, in... Arkema France

11/02/17 / #20170313844

Production of a master batch based on sulphur and carbonaceous nanofillers, the master batch produced, and uses thereof

The invention relates to a method for producing a master batch comprising between 0.01 and 50 wt. % of carbonaceous nanofillers and at least one sulphurated material such as elemental sulphur by melt compounding, and to the master batch thus produced and the different uses thereof. The invention also relates... Arkema France

10/26/17 / #20170304799

Zeolite-based adsorbents based on zeolite x with a low binder content and a low outer surface area, process for preparing them and uses thereof

The invention also relates to a process for preparing the said adsorbent and to the uses thereof, especially for separating xylene isomers.... Arkema France

10/26/17 / #20170304800

Zeolite-based adsorbents based on lsx zeolite of controlled outer surface area, process for preparing them and uses thereof

The present invention relates to a zeolite-based adsorbent comprising at least one zeolite of FAU structure of LSX type and comprising barium and/or potassium, in which the outer surface area of said zeolite-based adsorbent, measured by nitrogen adsorption, is between 20 m2·g−1 and 100 m2·g−1, limits inclusive. The present invention... Arkema France

10/26/17 / #20170306087

Specific preparing biobased polyesters

The present invention relates to a method for preparing a linear or branched hydroxylated and/or carboxylated polyester resin that is free of unsaturated fatty acids, comprising reacting an acid component with an alcohol component, said acid component comprising at least one C4 to C6 polycarboxylic acid or anhydride, and at... Arkema France

Patent Packs
10/26/17 / #20170306149

Impact modified transparent polyamide polymer composition

The present invention relates to an impact modified polyamide composition. In particular, the present invention relates to impact modified transparent polyarnide compositions comprising a multistage polymer. More particularly, the present invention relates to the use of multistage polymer as impact modifier in a transparent polyamide composition.... Arkema France

10/26/17 / #20170307973

Method for controlling the level of defects in films obtained with blends of block copolymers and polymers

The present invention relates to a method for controlling the level of defects in films obtained using a composition comprising a blend of block copolymers and polymers deposited on a surface. The polymers comprise at least one monomer identical to those present in one or other block of the block... Arkema France

10/19/17 / #20170297982

Azeotropic compositions of hydrogen fluoride and z-3,3,3-trifluoro-1-chloropropene

An azeotropic or quasi-azeotropic composition including hydrogen fluoride, Z-3,3,3-trifluoro-1-chloropropene and one or more (hydro)halocarbon compounds including 1 to 3 carbon atoms. The (hydro) halocarbon compounds are preferably selected among tetrachlorofluoropropanes, trichlorodifluoropropanes, dichlorotrifluoropropanes, chlorotetrafluoropropanes, pentafluoropropanes, dichlorodifluoropropenes, chlorotrifluoropropenes and tetrafluoropropenes. A process for producing a main (hydro)halocarbon compound, including the formation of... Arkema France

10/19/17 / #20170298161

Method for preparation of derivatives of polyvinylidene fluoride

The invention relates to a method for preparation of a polymer from monomers comprising polyvinylidene fluoride, trifluoroethylene and a third monomer, the method successively comprising: injection of all the monomers to react into a reactor; initiation of a polymerization of the monomers; a continuation step (a) of the polymerization of... Arkema France

10/19/17 / #20170298167

Method for preparing a grafted unsaturated synthetic rubber

A method for preparing a synthetic rubber, including a step of graft-polymerizing a main polymer with a methyl-methacrylate monomer in the presence of a peroxide initiator of formula (I): R1—O—O—R2, wherein each of R1 and R2 is independently an alkyl group or an alkanoyl group including from 1 to 30... Arkema France

10/12/17 / #20170291989

Biobased hydroxyl or carboxyl polyester resins

The present invention relates to a linear or branched structured hydroxylated or carboxylated polyester resin that is free of unsaturated fatty acids, that is made from an acid component and an alcohol component, said acid component comprising at least one C4 to C6 carboxylic polyacid or anhydride, and at least... Arkema France

10/05/17 / #20170283358

(meth)acrylic acid production process

The invention relates to the production of (meth)acrylic acid, and to implementation of a step of condensing water contained in a recycled gas effluent and/or in the air feed in a (meth)acrylic acid production process, which further includes a process for purifying a reaction mixture comprising (meth)acrylic acid without using... Arkema France

09/28/17 / #20170274350

Zeolite nanocrystal aggregates

The present invention relates to a zeolite material in the form of FAU zeolite nanocrystal aggregates, to the method for preparing said material, to the zeolite agglomerates prepared from said material with a binder, and to the uses of said material and agglomerate as adsorbents for gas-phase or liquid-phase separation... Arkema France

09/21/17 / #20170267612

Process for producing 1-chloro-2,2-difluoroethane

The present invention relates to the field of saturated fluorohydrocarbons. The subject matter thereof is more particularly the production of 1-chloro-2,2-difluoroethane from 1,1,2-trichloroethane and/or 1,2-dichloroethylene. A process for producing 1-chloro-2,2-difluoroethane from 1,1,2-trichloroethane and/or 1,2-dichloroethylene including (i) at least one step during which the 1,1,2-trichloroethane and/or the 1,2-dichloroethylene reacts or react... Arkema France

09/21/17 / #20170267624

Improved producing alkyl (meth)acrylates

The present invention relates to a method for producing a C4-C10 alkyl (meth)acrylate, by direct esterification of (meth)acrylic acid by the corresponding alcohol, the reaction water being removed in the form of an azeotrope with the esterification alcohol from a distillation column mounted over the esterification reactor comprising a cationic... Arkema France

09/14/17 / #20170260437

Heat transfer fluids comprising difluoromethane, pentafluoroethane, tetrafluoropropene and optionally propane

A composition includes between 11 and 13 wt. % of difluoromethane; between 58 and 62 wt. % of pentafluoroethane; between 18 and 29 wt. % of tetrafluoropropene; and between 0 and 7 wt. % of propane. The tetrafluoropropene can be 1,3,3,3-tetrafluoropropene or 2,3,3,3-tetrafluoropropene. The composition can be used as a... Arkema France

08/24/17 / #20170241575

Polyamide hose for compressed air

an inner layer (3) of a polymer having a flexural modulus of greater than 1100 MPa, the inner layer (3) being in contact with the compressed air.... Arkema France

08/17/17 / #20170232152

Use of peba having long blocks for the manufacture of all or part of a catheter

A copolymer containing polyether blocks and polyamide blocks for manufacturing an inflatable catheter element, such as a catheter balloon, with improved bursting strength, in which said copolymer has the following characteristics: number-average molecular mass of the PE blocks greater than 500 g/mol, and number-average molecular mass of the PA blocks... Arkema France

08/17/17 / #20170233366

Method for preparing trioxane

The present invention concerns a method for preparing 1,3,5-trioxane by trimerization of formaldehyde in the presence of methanesulfonic acid. The invention also concerns the use of at least one catalyst comprising methanesulfonic acid for the trimerization of formaldehyde into 1,3,5-trioxane.... Arkema France

08/10/17 / #20170226032

Compositions containing 1,1,1,3,3-pentachloropropane

The invention first relates to a composition comprising at least 99 wt. % of 1,1,1,3,3-pentachloropropane and at least one compound selected from a list of additional compounds consisting of dichloropropanes, trichloropropanes, tetrachloropropanes, pentachloropropanes different from 1,1,1,3,3-pentachloropropane, hexachloropropanes, heptachloropropanes, chloropropenes, dichloropropenes, trichloropropenes, tetrachloropropenes, pentachloropropenes and hexachloropropene, the weight content of said... Arkema France

Patent Packs
08/10/17 / #20170226035

Compositions comprising 1,1,1,2,3 pentachloropropane

The invention also relates to the use of this composition for manufacturing 2,3,3,3-tetrafluoropropene.... Arkema France

08/10/17 / #20170226318

Aqueous emulsion of dialkyl peroxide

An aqueous emulsion of dialkyl peroxide has at least one dialkyl peroxide in liquid form at room temperature, representing between 10% and 75% by weight of the emulsion, at least one emulsifier representing from 0.01% to 10% by weight of the emulsion, optionally, at least one antifreeze, optionally at least... Arkema France

08/03/17 / #20170218241

Composition containing 2,3,3,3-tetrafluoropropene and 1,2-difluoroethylene

Compositions containing 2,3,3,3-tetrafluoropropene and 1,2-difluoroethylene, that can be used in multiple fields of application. The composition can include from 45 to 90 mol % of 2,3,3,3-tetrafluoropropene and from 55 to 10 mol % of, 1,2-difluoroethylene. The composition can include from 55 to 80 mol % of 2,3,3,3-tetrafluoropropene and from 45... Arkema France

08/03/17 / #20170218242

Heat transfer method

A heat transfer method using ternary compositions containing 2,3,3,3-tetrafluoropropene, 1,1-difluoroethane and difluoromethane, said compositions being especially interesting as a heat transfer fluid in compression refrigeration systems comprising exchangers operation in counterflow mode or in split flow mode with counterflow tendency. The use of a ternary composition of 2,3,3,3-tetrafluoropropene, 1,1-difluoroethane and... Arkema France

08/03/17 / #20170222078

Photovoltaic module comprising a polymer front face

A photovoltaic module including a transparent first layer forming a front face, plural photovoltaic cells, and an assembly encapsulating the photovoltaic cells. The first layer includes plural plates independent from each other, each plate located opposite a photovoltaic cell. Rigidity of the encapsulating assembly is defined by a Young's modulus... Arkema France

07/27/17 / #20170210686

Process for manufacturing tetrafluoropropene

A process for manufacturing tetrafluoropropene, including, alternately: at least one step of reacting a chlorinated compound with hydrofluoric acid in the gas phase, in the presence of a fluorination catalyst, the proportion of oxygen optionally present being less than 0.05 mol. % relative to the chlorinated compound; a step of... Arkema France

07/27/17 / #20170210960

Azeotropic or quasi-azeotropic composition of chloromethane

Quasi-azeotropic or azeotropic compositions containing chloromethane and at least one or more compound(s) selected from 2,3,3,3-tetrafluoropropene, 3,3,3-trifluoropropene, 1,1,1,2-tetrafluoroethane, 1,1,1,2,2-pentafluoropropane, E/Z-1,1,3,3,3-pentafluoropropene, E/Z-1,2,3,3,3-pentafluoropropene, 1,1-difluoroethane and E-1,3,3,3-tetrafluoropropene. The composition may include either from 0.5 to 70 mol % of chloromethane and at least from 99.5 to 30 mol % of a compound selected... Arkema France

07/27/17 / #20170210962

Composition including 2,3,3,3-tetrafluoropropene

A composition including the compound HFO-1234yf and at least one other, additional, compound selected from HCFC-240db, HCFO-1233xf, HCFC-243db, HCFO-1233zd, HCC-40, HCFC-114a, HCFC-115, HCFC-122, HCFC-23, HCFC-124, HCFC-124a, HFC-125, HCFC-133a, HCFC-142, HCFC-143, HFC-52a, HCFC-243ab, HCFC-244eb, HFC-281ea, HCO-1110, HCFO-1111, HCFO-1113, HCFO-1223xd, and HCFO-1224xe. A composition including the compound HFO-1234yf and at least two... Arkema France

07/13/17 / #20170197204

Method for eliminating metal ions from a viscous organic solution

The invention relates to a method for eliminating metal ions from a viscous organic solution, the viscosity of which at 20° C. is between 1 and 1000 cP. This method comprises the steps consisting in placing a macroporous ion-exchange resin in a column, said resin comprising at least one acid... Arkema France

07/13/17 / #20170198097

Multifunctional acrylic oligomers of branched structure, by polyaddition between multifunctional amines and acrylates

The invention also relates to a specific preparation process and to the use of said oligomer in crosslinkable compositions, in particular as UV synergist in crosslinkable coatings, such as inks, varnishes, paints, adhesives and gel coats or in molding compositions or in compositions for 3D articles made by superposition of... Arkema France

07/13/17 / #20170200977

Lithium-sulphur cell

The present invention relates to a lithium-sulphur cell comprising an anode comprising lithium metal or lithium metal alloy;a cathode comprising a mixture of electroactive sulphur material and solid electroconductive material; and a liquid electrolyte comprising at least one lithium salt and a solvent comprising a dinitrile.... Arkema France

06/29/17 / #20170183430

Manufacture of ethylene/carboxylic acid vinyl ester copolymers from renewable materials, copolymers obtained and uses

A process for the manufacture of copolymers of ethylene and of at least one vinyl ester, including the following steps: a) fermentation of renewable starting materials so as to produce at least one alcohol comprising ethanol; b) dehydration of the alcohol obtained so as to produce at least one alkene... Arkema France

06/29/17 / #20170183457

Multistage polymer powder composition, its preparation and use

The present invention relates to halogenated containing polymer composition with a modifier that is a polymeric processing aid in form a non dusty polymer powder made by a multistage process while the last stage uses ethyl acrylate as major monomer.... Arkema France

06/22/17 / #20170172910

Cosmetic composition for lightening the skin

A composition including a support including porous polyamide particles, having a specific surface area BET greater than or equal to 8 m2/g, Glycyrrhiza glabra root extract as a cosmetic active substance impregnated on the support. Also, cosmetic products incorporating said composition, in particular for lightening the skin. The composition may... Arkema France

06/22/17 / #20170174587

Catalytic gas phase fluorination

at least one reaction stage comprising reacting a chlorinated compound with hydrogen fluoride in gas phase in the presence of the fluorination catalyst, so as to produce a fluorinated compound.... Arkema France

06/22/17 / #20170174589

Process for the manufacture of 2,3,3,3-tetrafluoropropene by gas phase fluorination of pentachloropropane

The present invention provides a process of catalytic fluorination in gas phase of product 1,1,1,2,3-pentachloropropane or/and 1,1,2,2,3-pentachloropropane into product 2,3,3,3-tetrafluoropropene in presence of a catalyst.... Arkema France

06/22/17 / #20170174829

Polyester resins based on fatty acids that have a short oil length, aqueous dispersions and associated coatings

The invention relates to a polyester resin which is based on at least one fatty acid, with zero oil length (0%) or an oil length of between 0 and 35%, with a weight ratio of oxidizable fatty acids (monoacids), relative to the overall fatty acids, of 0 or greater than... Arkema France

06/22/17 / #20170174847

Polymer powder composition and its preparation

The present invention relates to a non dusty polymer powder composed of aggregated latex particles prepared by a multistage preparation process.... Arkema France

06/15/17 / #20170165875

Method of producing a fibrous material pre-impregnated with thermoplastic polymer in a fluid bed

A method of producing a pre-impregnated fibrous material including a fibrous material of continuous fibres and a thermoplastic polymer matrix, wherein the pre-impregnated fibrous material is produced in a single unidirectional strip or in a plurality of parallel unidirectional strips, the method including the following steps: (i) impregnating the fibrous... Arkema France

06/15/17 / #20170166507

Method for the production of bio-sourced acrylic acid

The present invention relates to the manufacture of biobased acrylic acid from glycerol as starting material, the term “biobased acid” indicating that the acrylic acid is essentially based on a carbon source of natural origin.... Arkema France

06/15/17 / #20170166726

Use of mixtures of monoperoxycarbonate peroxides for the cross-linking and composition of cross-linkable polymers

The use of peroxide(s) for cross-linking at least one polymer, the polymer having a homopolymer or copolymer of ethylene and especially the ethylene-vinyl acetate copolymer (EVA) or a mixture of the EVA with another homopolymer or copolymer of ethylene, and at least one peroxide, wherein the peroxide includes OO-tert-butyl O-isopropyl... Arkema France








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