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Arkema Inc patents


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

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "A" | Arkema Inc-related inventors


 new patent  Curable compositions comprising mono-functional acrylates

Curable compositions include: a) at least one (meth)acrylate monomer or oligomer and b) at least one mono-functional (meth)acrylate monomer comprising a polycyclic moiety having at least three rings that are fused or condensed. The compositions may comprise an initiator system to render the compositions as curable. ... Arkema Inc

Polymer composition with filler, its method of preparation and use

The present invention relates to a polymeric processing aid its composition and its process of preparation and its use. In particular, the present invention relates to a polymeric processing aid and its use for filled halogen containing thermoplastic polymers. ... Arkema Inc

Polymer composition, its method of preparation and use

The present invention relates to a polymeric processing aid its composition and its process of preparation and its use. In particular, the present invention it relates to a polymeric processing aid and its use for highly filled halogen containing thermoplastic polymers. ... Arkema Inc

Article with zeolitic particles bonded with resin

The invention relates to an adsorbent article. The adsorbent article contains zeolitic particles which include at least one zeolitic adsorbent. ... Arkema Inc

Hydroxylated and/or carboxylated polyester resin with high solids content and high covering power for coating of metal foil

The invention is directed to a polyester resin bearing at least two functions from among hydroxyl and/or carboxyl, based on: a) a polyol component comprising a1) at least one diol bearing at least two lateral c2 to c4 alkyl substituents, a2) at least one diol bearing at least one lateral methyl substituent, a3) at least one c2 to c6 diol bearing no lateral substituent, a4) optionally, at least one polyol with functionality >2 and b) a polyacid component comprising b1) at least one aromatic diacid, b2) at least one linear c4 to c10 aliphatic diacid, b3) optionally, at least one cycloaliphatic diacid, said resin being free of any unsaturated fatty monoacid or monoalcohol. The invention is further directed to the polyester resin in solution in an organic solvent and crosslinkable compositions comprising it, particularly for metal foil coatings (“coils”).. ... Arkema Inc

Water soluble polymers and polymer adducts along with aqueous solutions thereof

A water soluble polymer or polymeric adduct has a backbone comprising a plurality of segments with amine functional groups and hydroxyl functional groups with a number average molecular weight in the range of about 500 to about 1,000,000 daltons. The polymeric adduct may be formed as an addition product by reacting at least one multifunctional amine compound reacted with a one or more polyfunctional epoxy compounds and/or one or more monofunctional epoxy compounds, such that there n are 1.3 to 3.8 reactive amine functional groups per reactive epoxy functional group. ... Arkema Inc

Method for impregnating a fibrous substrate with a methacrylic mixture comprising a flame-retardant substance

The present invention relates to a (meth)acrylic mixture for impregnating a fibrous substrate, characterized in that it comprises: a) a first dispersion comprising at least one (meth)acrylic polymer obtained by emulsion polymerization of one or more (meth)acrylic monomers, b) a second dispersion comprising at least one flame retardant. The invention also relates to a method for impregnating a fibrous substrate with a (meth)acrylic mixture of this kind, and to a method for manufacturing mechanical parts or structured elements, or articles, from the (meth)acrylic mixture. ... Arkema Inc

Compositions of polyamide and peba for the injection of fatigue-resistant rigid parts

Composition including: (a) 50% to 95% of at least one semicrystalline polyamide of formula a/z in which: a is an aliphatic repeating unit chosen from a unit obtained from the polycondensation of at least one amino acid and a unit obtained from the polycondensation of at least one lactam or a unit x.y obtained from the polycondensation of at least one diamine, and of at least one dicarboxylic acid, and z represents another polyamide and is included from 0 to 20%; (b) 5% to 50% of at least one semicrystalline copolyamide comprising amide units (ba1) and including polyether units (ba2), having a glass transition temperature (tg) below 75° c.; (c) 0% to 20% by weight of fibres and/or fillers, (d) 0% to 20% of at least one impact modifier, (e) 0% to 5% of at least one additive, for the manufacture of a sports article.. . ... Arkema Inc

Coating apparatus for containers

The present invention relates to a coating apparatus (also called coating tunnel or coating hood) for applying a protective coating to hollow glass containers. In particular, it relates to a coating apparatus with the re-use of the coating material containing exhaust from the end of the coating tunnel for applying the protective coatings to glass containers. ... Arkema Inc

Masterbatch of carbon-based conductive fillers for liquid formulations, especially in li-on batteries

. . A masterbatch in agglomerated solid form including carbon nanofibers and/or nanotubes and/or carbon black, the content of which is between 15 wt % and 40 wt %, preferably between 20 wt % and 35 wt %, relative to the total weight of the masterbatch; at least one solvent; at least one polymer binder, which represents from 1 wt % to 40 wt %, preferably from 2 wt % to 30 wt % relative to the total weight of the masterbatch. Also, a concentrated masterbatch, characterized in that it is obtained by eliminating all or part of the solvent from the masterbatch described previously. ... Arkema Inc

Process for obtaining high-period, thick ordered films comprising a block copolymer

The present invention relates to a process for obtaining high-period (typically >10 nm), thick (typically >20 nm) ordered films on a nanometric scale comprising a block copolymer (bcp). The invention also relates to the compositions used to obtain these thick ordered films and to the resulting ordered films that can be used in particular as masks in the lithography field.. ... Arkema Inc

Latex products having polymers and polymer adducts as quick-setting additives

A latex product composition that includes an anionicaily-stabilized latex; at least one volatile base compound; and one or more water soluble, polymers or polymeric adducts that have a backbone with a plurality of amine functional groups and hydroxyl functional groups. The polymers or polymeric adducts may be an addition product formed from at least one multifunctional amine compound reacted with one or more polyfunctional epoxy compounds, one or more monofunctional epoxy compounds, or a combination thereof. ... Arkema Inc

Manufacture of organopolysulfides and salts thereof

A method of producing an organopolysulfide or salt thereof is provided which includes a step of mixing an organomonosulfide or salt thereof and elemental sulfur, wherein the mixing is carried out at a temperature not greater than 95 c and in the absence of any added liquid phase for a time effective to produce the organopolysulfide or salt thereof. The described method makes possible the preparation of organopolysulfides and organopolysulfide salts without the use of solvent or catalyst.. ... Arkema Inc

Method for producing fluorinated olefins

Fluorinated olefins are produced in a reductive coupling reaction by contacting a first reactant with a second reactant in the gas phase under an inert atmosphere at a temperature of at least 500 c. The first reactant may be, for example, a hydrofluoro carbon containing one or two carbon atoms, while the second reactant may be, for example, a two to four carbon hydrohalocarbon (e.g., a hydrofluorocarbon) or hydrocarbon.. ... Arkema Inc

06/07/18 / #20180155594

Compositions based on 2,3,3,4,4,4-hexafluorobut-1-ene

A composition including 2,3,3,4,4,4-hexafluorobut-1-ene as a mixture with one or more hydrocarbon, hydrofluorocarbon, ether, hydrofluoroether or fluoroolefin compounds having a boiling point of less than or equal to 0° c. Also, the use of such a composition in heat transfer applications. ... Arkema Inc

05/31/18 / #20180149392

Tetrafluoropropene-based supercritical heat-transfer fluids

. . A method for heating a fluid or a body using a vapour compression circuit containing a heat-transfer fluid containing tetrafluoropropene, said method including, successively and cyclically, evaporation of the heat-transfer fluid, compression of the heat-transfer fluid, cooling of the heat-transfer fluid and expansion of the heat-transfer fluid, the heat-transfer fluid being in the supercritical state at the end of compression. Also, an installation suited to implementing this method.. ... Arkema Inc

05/31/18 / #20180148634

Fluid composition for stimulation in the field of oil or gas production

The present invention relates to filamentous polymer particles useful in oil, condensate or gas recovery from subterranean locations as hydraulic fracturing fluids, diverting fluids, fluids that make it possible to improve the distribution and the flow profiles of the fluids or products injected (referred to as conformance fluids) or permeability control fluids, sand control gravel pack placement fluids, acid fracturing fluids, and the like. These fluids are stimulation fluids injected in wells which serve also as producing wells for the hydrocarbons initially present in the subterranean formations.. ... Arkema Inc

05/31/18 / #20180148572

Method for the thermal treatment of poly-arylene ether ketone ketone powders suitable for laser sintering

The invention relates to a process for the heat treatment of poly(arylene ether ketone ketone) powder suitable for laser sintering, and also to the powders resulting from this process.. . ... Arkema Inc

05/31/18 / #20180148561

Method for producing a master mixture based on carbonaceous nanofillers and super plasticiser, and the use thereof in hardenable inorganic systems

Hardenable inorganic systems such as cements, plasters, ceramics or liquid silicates, usable for example in the building trade, construction industry or oil drilling industry. The insertion of carbonaceous nanofillers, such as carbon nanotubes, for reinforcing mechanical properties and improving such systems. ... Arkema Inc

05/31/18 / #20180148395

Stabilization of 1-chloro-3,3,3-trifluoropropene

The use of a c3 to c6 alkene compound including a sole double bond, for limiting or preventing the isomerization of trans-1-chloro-3,3,3-trifluoropropene to cis-1-chloro-3,3,3-trifluoropropene. Also, a composition including 1-chloro-3,3,3-trifluoropropene and a c3 to c6 alkene compound including a sole double bond, and also to various uses of this composition, such as a process for heating or cooling a fluid.. ... Arkema Inc

05/31/18 / #20180148394

Compositions based on 1,1,3,3-tetrachloropropene

The present invention relates to compositions based on f-1230za (1,1,3,3-tetrachloropropene), or on a mixture consisting of f-1230za and f-1230zd (1,3,3,3-tetrachloropropene), the manufacture thereof, and also the use thereof in particular for the production of f-1233zde (trans-1-chloro-3,3,3-trifluoropropene), f-1234zee (trans-1,3,3,3-tetrafluoropropene), and/or f-245fa (1,1,1,3,3-pentafluoropropane).. . ... Arkema Inc

05/24/18 / #20180141885

Method for producing fluorinated compounds

The invention relates to a method for producing a fluorinated compound, comprising: the provision of a gaseous flow comprising hydrofluoric acid; the provision of at least one liquid flow of a chlorinated compound and the vapourisation thereof by mixing with said gaseous flow, the resulting mixture being a gaseous mixture; and the catalytic reaction of the chlorinated compound with hydrofluoric acid in a gaseous phase and the collection of a product flow. The invention also relates to a facility for carrying out said method.. ... Arkema Inc

05/17/18 / #20180134936

Binary refrigerating fluid

Binary compositions of 2,3,3,3-tetrafluoropropene and difluoromethane, and especially to the uses thereof as a heat transfer fluid in compression systems with exchangers operating in counterflow mode or in split flow mode with counterflow tendency. Also, a method of heat transfer in which a binary composition of 2,3,3,3-tetrafluoropropene and difluoromethane is used as refrigerant in compression systems with exchangers in countercurrent mode or in crossed-current mode with countercurrent tendency.. ... Arkema Inc

05/17/18 / #20180134928

Adhesive composition based on ethylene copolymers obtained by tube copolymerisation, that can be used for extrusion-coating and extrusion-lamination

An adhesive composition of at least one ethylene polymer or copolymer, wherein at least one first polymer or copolymer including the unsaturated carboxylic acid ester type comonomer is copolymerized in a continuous high-pressure tubular reactor, while a second polymer or copolymer including the functional comonomer is copolymerized by either autoclave or tubular continuous high-pressure radical means; the first and second polymer or copolymer possibly being of one and the same polymer/copolymer. Also, a multilayer structure that incorporates the adhesive composition and a particular process for obtaining this composition.. ... Arkema Inc

05/17/18 / #20180134891

Composition of poly-arylene ether ketone ketone powders suitable for laser sintering

The present invention relates to a composition comprising at least one poly(arylene ether ketone) powder suitable for laser sintering and also to the process which makes it possible to obtain it, minimizing the amount by weight of remaining non-sintered powder after production of the part by sintering.. . ... Arkema Inc

05/17/18 / #20180134886

Fluorinated polymer composition

The present invention concerns a fluorinated polymer composition, methods for producing same, and products that can be produced from said composition. More particularly, the invention concerns a thermoplastic polymer composition comprising the following components a, b and c: a- a polyvinylidene fluoride (pvdf) homopolymer comprising a fraction of ultra high molecular weight chains (uhmcf); b- a vinylidene fluoride (vdf) elastomeric copolymer and at least one other fluorinated comonomer copolymerisable with vdf, and c- a vdf homopolymer having a lower viscosity than component a.. ... Arkema Inc

05/10/18 / #20180127340

Process for the purification of pentafluoroethane

The invention relates to a process for the purification of pentafluoroethane (r125) containing chloropentafluoroethane (r115). The mixture to be purified is subjected to an extractive distillation, the extractant being selected from dimethylformamide (dmf), dioxane, dimethylsulphoxide (dmso) and diethylsulphoxide (deso).. ... Arkema Inc

05/10/18 / #20180126348

Composition comprising hf and 3,3,3-trifluoro-2-chloropropene

An azeotropic or quasi-azeotropic composition including hydrogen fluoride, 3,3,3-trifluoro-2-chloropropene and one or more (hydro)halogen-carbon compounds including between 1 and 3 carbon atoms. Also an azeotropic or quasi-azeotropic composition including hydrogen fluoride, 3,3,3-trifluoro-2-chloropropene, and one or more compounds selected from among 1,3,3,3-tetrafluoropropene, 1,1,1,2,2-pentafluoropropane, 2,3,3,3-tetrafluoropropene, 3,3,3-trifluoropropene, e-3,3,3-trifluoro-1-chloropropene, trifluoropropyne, 1,1,3,3-pentafluoropropane, 1,1,1,3,3-pentafluoropropane, 1,1,1,3,3-pentafluoropropene, 1,1,1,2,3-pentafluoropropene and 2-chloro,1,1,1,2-1 tetrafluoropropane.. ... Arkema Inc

04/19/18 / #20180104670

Porous article having polymer binder sub-micron particle

The invention relates to a solid porous article containing sub-micron functional additive particles held together using discrete sub-micron polymer binder particles. The porous article preferably also contains a majority of primary active particles in the 1 to 300 micron range. ... Arkema Inc

04/19/18 / #20180104654

Production system for composite porous solid articles

A production system for manufacturing composite porous solid articles is provided wherein the color of such articles is monitored to confirm that the articles, which are produced by heating and compressing mixtures of poly(vinylidene fluoride) binder powder (such as kyblock® resin from arkema) and activated carbon powder, are fully cured. Adjustments to the processing conditions are made when a region of the article appears blue (indicative of incomplete curing).. ... Arkema Inc

04/12/18 / #20180099250

Porous separation article

. . The invention relates to a porous separation article having a fluoropolymer, polyamide, peek, or pekk binder interconnecting one or more types of interactive powdery materials or fibers. The interconnectivity is such that the binder connects the powdery materials or fibers in discrete spots rather than as a complete coating, allowing the materials or fibers to be in direct contact with, and interact with a fluid. ... Arkema Inc

04/05/18 / #20180093934

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. And 150° c. ... Arkema Inc

04/05/18 / #20180093305

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 for cleaning solid deposits containing at least one aconitic acid salt, using at least one alkane sulfonic acid.. ... Arkema Inc

03/29/18 / #20180086173

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. ... Arkema Inc

03/22/18 / #20180079952

Colored organic peroxide compositions and methods for breaking hydraulic fracturing fluids

. . . . A breaker composition for use in a fracturing fluid comprises at least one organic peroxide (e.g., tert-butyl hydroperoxide), at least one dye (e.g., an fd&c dye), and at least one alcohol (e.g., propylene glycol). A promoter composition for use in a fracturing fluid comprises at least one promoter (e.g., sodium thiosulfate), at least one dye (e.g., an fd&c dye). ... Arkema Inc

03/22/18 / #20180079943

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 number of the centrifugal compressor to the mach number which the centrifugal compressor has under the same operating conditions if the heat-transfer fluid is replaced with 1,1,1,2-tetrafluoroethane in the vapour compression circuit is greater than or equal to 0.97 and less than or equal to 1.03; the compression ratio of the centrifugal compressor is less than or equal to the compression ratio which the centrifugal compressor has under the same operating conditions if the heat-transfer fluid is replaced with 1,1,12-tetrafluorethane in the vapour compression circuit.. . ... Arkema Inc

03/22/18 / #20180079908

Colored organic peroxide compositions

Stable organic peroxide compositions include at least one organic peroxide (e.g., tert-butyl hydroperoxide), at least one dye (e.g., an fd&c dye), and at least one alcohol (e.g., propylene glycol, tert-butanol, and/or glycerin).. . ... Arkema Inc

03/22/18 / #20180079706

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 possible to reduce the amount of final aqueous discharges.. ... Arkema Inc

03/22/18 / #20180078919

Shell and tube oxidation reactor with improved resistance to fouling

The present disclosure relates to a single shell open interstage reactor (“ssoi”). The ssoi comprises a first reaction stage, an interstage heat exchanger, an open interstage region, and a second reaction stage. ... Arkema Inc

03/22/18 / #20180077954

Peroxide dispersions

The viscosity of aqueous dispersions of normally solid organic peroxides may be advantageously lowered through the use of surfactants which are polyglyceryl esters of c6-c12 fatty acids. The reduction in viscosity facilitates milling the peroxides to reduce particle size and also provides dispersions of small particle size peroxides which may be readily poured or pumped. ... Arkema Inc

03/15/18 / #20180076444

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. ... Arkema Inc

03/15/18 / #20180072829

Modified fluoropolymers

The invention relates to fluoropolymers that have been modified with low molecular weight, polymeric chain transfer agents, and uses of the modified fluoropolymers. The modified fluoropolymers provide enhanced properties to the fluoropolymer, such as increased adhesion, and hydrophilic characteristics. ... Arkema Inc

03/01/18 / #20180057748

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. ... Arkema Inc

03/01/18 / #20180057432

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 atom, provided that at least one hydrogen atom and one fluorine atom are located on adjacent carbon atoms, into contact with potassium hydroxide in a stirred reactor, containing an aqueous reaction medium, equipped with at least one inlet for the reactants and with at least one outlet, in order to give the (hydro)fluoroolefin compound, which is separated from the reaction medium in gaseous form, and potassium fluoride, (ii) bringing the potassium fluoride formed in (i) into contact, in an aqueous medium, with calcium hydroxide in order to give potassium hydroxide and to precipitate calcium fluoride, (iii) separation of the calcium fluoride precipitated in step (ii) from the reaction medium and (iv) optionally, the reaction medium is recycled after optional adjustment of the potassium hydroxide concentration to step (i).. ... Arkema Inc

03/01/18 / #20180056247

Pvdf powder for liquid slurries

The invention relates to polymer powders, preferably fluoropolymer powders such as polyvinylidene fluoride (such as kynar® resins from arkema inc.), polyvinyl fluoride, and poly-ethylene-co-chlorotrifluoroethylene, useful for a high-solids liquid slurry. The pvdf has a narrow average particle size of from 20 to 100 microns, with less than 20 weight percent of particles outside this range. ... Arkema Inc

02/22/18 / #20180052260

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. ... Arkema Inc

02/22/18 / #20180051197

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 resin. The psa systems may also optionally include other additives, such as at least one initiator system that includes at least one photo-initiator or free radical initiator. ... Arkema Inc

02/15/18 / #20180047989

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. ... Arkema Inc

02/15/18 / #20180047986

Particulate polymer binder composite

The invention relates to a dry free-flowing composite of a sub-micron polymer binder particles and interactive materials, and articles formed therefrom. The polymer particles are formed from a dilute latex polymer and blended with interactive materials, then the blend is spray-dried, to form a dry blend in which less than 10% of all polymer particles are in an agglomerated form. ... Arkema Inc

02/15/18 / #20180044515

High impact blends of vinylidene fluoride-containing polymers

The invention relates to blends containing polymers of vinylidene fluoride, having low ductile-brittle transition temperatures and having excellent low temperature impact properties while maintaining the positive aspects of unmodified vinylidene fluoride-containing polymers. The blends of this invention are produced by adding a core-shell impact modifier (csim) comprised of a polysiloxane core and a shell compatible with vinylidene fluoride-containing polymer. ... Arkema Inc

02/15/18 / #20180044456

Heterogeneous, co-continuous copolymers of vinylidene fluoride

The invention relates to a heterogeneous, co-continuous copolymer composition of vinylidene fluoride and at least one other comonomer. Preferred comonomers are hexafluoropropylene and perfluoroalkylvinyl ether. ... Arkema Inc

02/08/18 / #20180037718

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 the method for producing said composition and to the use of same.. ... Arkema Inc

02/08/18 / #20180037701

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 Inc

02/01/18 / #20180034106

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 branched alkyl group, —x represents either a covalent bond or a c1 to c6 linear or branched alkylene alkenylene or alkynylene group, —y represents either an —(och2ch2)m- group, or an —(n(ch3)ch2ch2)m- group, m being an integer of between 0 and 15, provided that m is different from 0 when x represents a covalent bond, and —r4 represents a cyano, cyanate, isocyanate, thiocyanate or isothiocyanate group.. . ... Arkema Inc

02/01/18 / #20180029962

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 Inc

01/18/18 / #20180015645

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 Inc

01/18/18 / #20180015407

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 of between 1.0 and 2.0. The invention also concerns a zeolite adsorbent material having an si/al ratio of between 1.0 and 2.0, a mesoporous volume of between 0.07 cm3·g−1 and 0.18 cm3·g−1, a (vmicro-vmeso)/vmicro ratio of between −3 and 1.0, non-inclusive, and a non-zeolite phase (pnz) content such that 0<pnz≦30%.. ... Arkema Inc

01/11/18 / #20180011399

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 the lithography field.. ... Arkema Inc

01/11/18 / #20180009968

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 use, a process for making such a composite material and manufactured mechanical or structured part or article comprising this polymeric composite material.. ... Arkema Inc

01/11/18 / #20180009961

Expanded polymer powders

The invention relates to small expanded polymer powder particles, and uses thereof. The expanded powder particles are formed by a non-melt process, resulting in individual expanded particles in the 5 to 100 micron range. ... Arkema Inc

01/11/18 / #20180009736

Reclamation of noble products in a method for 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 treatment being carried out in the presence of a dialkyl phthalate, the alkyl chain of which corresponds to that of the light alkyl (meth)acrylate. ... Arkema Inc

01/11/18 / #20180008955

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 2.5. The invention also concerns a zeolite adsorbent material having an si/al ratio such that 1≦si/al<2.5, a mesoporous volume of between 0.08 cm3·g−1 and 0.25 cm3·g−1, a (vmicro−vmeso)/vmicro ratio of between −0.5 and 1.0, non-inclusive, and a non-zeolite phase (pnz) content such that 0<pnz≦30%.. ... Arkema Inc

01/04/18 / #20180003625

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 off-gas. ... Arkema Inc

01/04/18 / #20180002520

Composition comprising a multistage polymer, its method of 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. ... Arkema Inc

01/04/18 / #20180002472

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 Inc

01/04/18 / #20180001549

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 conditions for producing the object by melting polymer powders.. ... Arkema Inc

01/04/18 / #20180000948

Peroxide dispersions

The viscosity of aqueous dispersions of normally solid organic peroxides may be advantageously lowered through the use of surfactants which are polyglyceryl esters of c6-c12 fatty acids. The reduction in viscosity facilitates milling the peroxides to reduce particle size and also provides dispersions of small particle size peroxides which may be readily poured or pumped.. ... Arkema Inc

12/28/17 / #20170369696

Multistage polymer composition, its method of 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 Inc

12/28/17 / #20170369668

Blowing agent composition of hydrochlorofluoroolefin

A blowing agent for thermosetting foams is disclosed. The blowing agent is predominately the trans isomer of the hydrochlorofluoroolefin (hcfo) hfco-1233zd alone or in combination with a hydrofluoroolefin (hfo), hydrofluorocarbon hydrochlorofluoroolefin (hcfo), a hydrocarbon. ... Arkema Inc

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, with a tg of less than 30° c. ... Arkema Inc

12/28/17 / #20170368731

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 Inc

12/21/17 / #20170362395

Polymer composition, its method of 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. ... Arkema Inc

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 Inc

12/14/17 / #20170355801

Multistage polymer, its composition, its method of 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 Inc

12/14/17 / #20170355785

Peroxide vulcanization of rubber latexes

A peroxide formulation includes at least one peroxide and at least one compound having a secondary amine group selected from amino acids, such as arginine, folic acid, and polyethyleneamines. The peroxide formulation is capable of curing an aqueous elastomer such as a latex in the full or partial presence of oxygen. ... Arkema Inc

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 method involving melting in the presence of intense mechanical energy. ... Arkema Inc

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 diester and/or the amino ester but not the polyamide that forms during the polycondensation, at a temperature between 30° c. And the boiling temperature of the solvent, in order to produce a powder precipitate dispersed in the solvent.. ... Arkema Inc

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 or more functional additives, making up at most 10 wt % of the mixture, preferably at most 5 wt % of the mixture, characterised in that the thermoplastic modifier includes a second polymer which comprises a polyolefin backbone containing a group of at least one unsaturated monomer (x) and a plurality of polyamide grafts. The invention also relates to a multilayer structure including a plurality of adjacent layers, at least one of which consists of the aforementioned composition.. ... Arkema Inc

11/23/17 / #20170335107

Thermoplastic composite material made of a semi-crystalline polyamide and method for 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 corresponds to x′.t, wherein x′ can be b1): a specific branched x-dependent aliphatic diamine, b2): mxd or b3): a linear x-dependent aliphatic diamine, said polyamide having a glass transition temperature tg of at least 90° c. ... Arkema Inc

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 and 85%, limits included, and preferably between 55 and 70%, the composition including between 1 and 40%, limits included, preferably between 5 and 40% and more preferably still between 10 and 30% by weight of pekk, with respect to the total weight of the composition.. . ... Arkema Inc

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. ... Arkema Inc

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 and inner surfaces thereof, at least one continuous self-adhesive or self-sticking or tackifying area. The present invention also relates to the method for sealing soil intended for fumigation treatment or in the process of fumigation treatment or which has been treated by fumigation, by covering said soil with a self-adhesive fumigant barrier film, as well as to a kit for fumigation treatment including at least one self-adhesive fumigant barrier film and at least one fumigant.. ... Arkema Inc

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 Inc

11/09/17 / #20170321027

Blowing agent compositions of carbon dioxide and hydrochlorofluoroolefins

The present invention relates to blowing agent compositions of carbon dioxide and at least one hydrochlorofluoroolefin (hcfo). The hcfos can include, but are not limited to, 1-chloro-3,3,3-trifluoropropene (hcfo-1233zd), 2-chloro-3,3,3-trifluoropropene (hcfo-1233xf) and mixtures thereof. ... Arkema Inc

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 amino acid or the lactam, 1.10-decanediamine and terephtalic acid in the presence of at least one c1-c7 linear aliphatic acid. ... Arkema Inc

11/09/17 / #20170320804

Control of a process for the purification of (meth)acrylic acid using on-line, near ir analysis

An improved process for the manufacture of technical grade (meth)acrylic acid, e.g., acrylic acid, the process comprising producing a hydrated reaction product from the gas-phase oxidation of at least one (meth)acrylic acid precursor, e.g., propylene, followed by first dehydrating and then concentrating the reaction product, the improvement comprising controlling at least one of the water, acetic acid and (meth)acrylic acid content of the reaction product during the purification of the reaction product using on-line, near ir spectroscopy.. . ... Arkema Inc

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 copolymers.. ... Arkema Inc

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. ... Arkema Inc

10/26/17 / #20170306087

Specific method for 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 least one c8 to c54 polycarboxylic acid or anhydride, and said alcohol component comprising at least one biobased polyol having a functionality of at least 2 bearing a 1,4:3,6-dianhydrohexitol unit, and at least one of two polyols b2) and b3).. . ... Arkema Inc

10/26/17 / #20170306075

Processes for increasing density of polymer flakes and powders

The present disclosure is directed to improved poly(arylene ether ketone) powders for use in laser sintering, powder coating, compression molding, or transfer molding.. . ... Arkema Inc

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 also relates to the use of such a zeolite-based adsorbent as an adsorption agent, and also to the process for separating para-xylene from aromatic isomer fractions containing 8 carbon atoms.. ... Arkema Inc

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 one c5 to c54 carboxylic polyacid or anhydride, and with said alcohol component comprising at least one biobased polyol having a functionality of at least 2 bearing a 1,4:3,6-dianhydrohexitol unit, and at least one of two polyols b2) and b3).. . ... Arkema Inc

10/05/17 / #20170283443

Fluorosilicon nitrile compounds

Novel fluorosilicon nitrile compounds, and methods of preparing them, are described. The fluorosilicon nitrile compounds are characterized by having a total of four substituents attached to a silicon atom, wherein one or two of the substituents are fluorine atoms, one or two of the substituents are cyanoalkyl groups, which are the same as or different from each other, and the remainder of the substituents, if any, are alkyl groups, which are the same as or different from each other.. ... Arkema Inc

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 azeotropic solvent and based on the use of two distillation columns.. . ... Arkema Inc

09/28/17 / #20170275528

Compositions and methods for breaking hydraulic fracturing fluids

A breaker composition for use in a fracturing fluid comprises water, at least one peroxide (e.g., tert-butyl hydroperoxide), and optionally at least one alcohol (e.g., propylene glycol and/or a butyl alcohol). The peroxide(s) and optional alcohol(s) are present in amounts effective to reduce the viscosity of a fracturing fluid at a temperature of 90-300 f. ... Arkema Inc

09/28/17 / #20170275307

Preparation of fluorosilicon compounds

Methods of synthesizing fluorosilanes containing cyano-substituted alkyl groups are provided. For example, 3-cyano-propyldimethylfluorosilane may be produced by reacting tetramethyldisiloxane and boron trifluoride to obtain fluorodimethylsilane and then reacting the fluorodimethylsilane with allyl cyanide, in the presence of a hydrosilylation catalyst. ... Arkema Inc

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 operations, and particularly in methods for separating gas or liquid flows.. . ... Arkema Inc

09/21/17 / #20170267855

Compositions and methods for crosslinking polymers in the presence of atmospheric oxygen

An organic peroxide formulation includes at least one organic peroxide and at least one cellulose compound. Embodiments of the organic peroxide formulations significant improvements in surface tackiness (often including but not limited to tack-free surfaces) when curing elastomers in the presence of oxygen. ... Arkema Inc

09/21/17 / #20170267834

Liquid and meltable solid grades of scorch protected peroxides

Embodiments of organic peroxide formulations provide longer scorch time protection and require fewer additives. The peroxide formulations may include, for example, at least one organic peroxide, at least one nitroxide-containing compound (e.g., 4-hydroxy-tempo), and at least one quinone-containing compound (e.g., mono-tert-butylhydroquinone). ... Arkema Inc

09/21/17 / #20170267832

Compositions and methods for crosslinking polymers in the presence of atmospheric oxygen

An organic peroxide formulation comprises at least one organic peroxide, at least one drying oil, and at least one free radical trap. A process comprises curing mixtures that include at least one elastomer and the organic peroxide formulation in the presence of oxygen. ... Arkema Inc

09/21/17 / #20170267624

Improved method for 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 resin as a catalyst. Said method is characterized in that the molar ratio of alcohol to acid at the inlet of the reactor is between 1.4 and 3, and in that the crude reaction mixture circulates in a recirculation loop joining the reactor and the water removal column, at a recirculation rate of between 6 and 25, expressed by the mass ratio between the flow fed into the loop and the flow sent to a purification treatment.. ... Arkema Inc

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. ... Arkema Inc

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. ... Arkema Inc

09/14/17 / #20170260343

Compositions and methods for crosslinking polymers in the presence of atmospheric oxygen

Embodiments of organic peroxide formulations provide significant improvements in surface tackiness (often including tack-free surfaces) when curing elastomers in the presence of oxygen. The peroxide formulations may include, for example, one or more compounds selected from sulfur-containing compounds, organophosphite compounds, hals (hindered amine light stabilizer) compounds, aliphatic allyl urethane compounds, and blends comprising nitroxides (e.g., 4-hydroxy-tempo) and quinones (e.g., mono-tert-butylhydroquinone).. ... Arkema Inc

09/07/17 / #20170254017

Fibers sized with polyetherketoneketones

Fibers sized with a coating of amorphous polyetherketoneketone are useful in the preparation of reinforced polymers having improved properties, wherein the amorphous polyetherketoneketone can improve the compatibility of the fibers with the polymeric matrix.. . ... Arkema Inc

09/07/17 / #20170253760

Stable aqueous fluoropolymer coating composition

The invention relates to a high shear stable aqueous fluoropolymer coating composition, preferably using polyvinylidene fluoride (pvdf), such as kynar® pvdf, suitable for high performance coating applications. The composition is based on a high shear stable fluoropolymer emulsion having small particle size, blended with an acrylic polymer additive. ... Arkema Inc

08/24/17 / #20170240716

Voided latex particles

. . A process for forming voided latex particles is improved by combining swelling and polymerization of an outer shell into a single step. The process includes contacting multi-stage emulsion polymer particles comprising a core, at least one intermediate shell, with a swelling agent, and polymerizing an outer shell after said contacting with swelling agent wherein the core and the at least one intermediate shell are contacted with swelling agent in the presence of less than 0.5% monomer based on the weight of the multi-stage emulsion polymer particles, and substantially all of the swelling occurs during polymerization of the outer shell.. ... Arkema Inc

08/17/17 / #20170233518

Voided latex particles

A process for forming voided latex particles is improved by combining swelling and polymerization of an outer shell into a single step. The process includes contacting multi-stage emulsion polymer particles comprising a core, at least one intermediate shell, with a swelling agent, and polymerizing an outer shell after said contacting with swelling agent wherein the core and the at least one intermediate shell are contacted with swelling agent in the presence of less than 0.5% monomer based on the weight of the multi-stage emulsion polymer particles, and substantially all of the swelling occurs during polymerization of the outer shell.. ... Arkema Inc

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 Inc

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 greater than 10 000 g/mol.. . ... Arkema Inc

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 one functional additive, water, the amount of which is determined so as to form the rest of said emulsion (100%), characterized in that the emulsifier is a polyethoxylated nonionic surfactant. Also, a process for preparing this aqueous emulsion.. ... Arkema Inc

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 compound in the composition being lower than or equal to 500 ppm.. ... Arkema Inc

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. ... Arkema Inc

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 difluoromethane as heat transfer fluid in compression-type refrigeration systems with exchangers operating in countercurrent mode or in crossed-current mode with countercurrent tendency.. ... Arkema Inc

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. ... Arkema Inc

08/03/17 / #20170216780

High toughness hollow fiber membranes based on vinylidene fluoride polymers

Hollow fiber membranes having improved toughness and durability are prepared using a vinylidene fluoride polymer-containing component, such as kynaro resins, having relatively low crystallinity. One aspect of the invention provides a membrane in the form of a fiber, wherein i) the fiber has a porous wall of a polymeric component enclosing a central hollow space extending the length of the fiber, ii) the polymeric component has a crystallinity as determined by wide angle x-ray diffraction of less than about 35%, iii) the polymeric component is comprised of at least one homopolymer or copolymer of vinylidene fluoride and iv) the membrane has an energy to break of at least about 0.5 j per square mm of membrane cross section.. ... Arkema Inc

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 compounds selected from hfo-1234ze, hfc-245cb, hfc-134a, hcfc-115, hfc-152a, hcc-40 and hfo-1243zf.. ... Arkema Inc

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 from 2,3,3,3-tetrafluoropropene, 1,1-difluoroethane, 3,3,3-trifluoropropene and 1,1,1,2-tetrafluoroethane, or from 55 to 95 mol % of chloromethane and at least from 45 to 5 mol % of one or more compound(s) selected from 1,1,1,2,2-pentafluoropropane, e/z-1,1,3,3,3-pentafluoropropene, e/z-1,2,3,3,3-pentafluoropropene and e-1,3,3,3-tetrafluoropropene.. ... Arkema Inc

07/27/17 / #20170210706

Synthesis of 2,2,2-trifluoroethanethiol

A method of making cf3ch2sh, comprising a step of reacting cf3ch2x, wherein x is halide or tosylate, with msh, where m is an alkali metal such as na or k, to yield cf3ch2sh. More specifically, a method of making cf3ch2sh, a step of reacting cf3ch2ci with a molar excess of nash in a reaction medium of one or more polar organic solvents at a temperature of from about 70 c to about 110 c for a time of from about 1 to about 5 hours.. ... Arkema Inc

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 regenerating the fluorination catalyst by bringing the fluorination catalyst into contact with a regeneration stream including an oxidizing agent. ... Arkema Inc

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 Inc

07/13/17 / #20170198134

Heat treated polymer powders

The invention relates to heat treatment of polymorphic semicrystalline or crystallizable polymers to increase the content of the highest melting crystalline form. Such heat treatment results in a polymer powder that has a consistent, uniform melting range, improved flow and improved durability of the powder particle size for applications that require powder flow at elevated temperatures. ... Arkema Inc

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. ... Arkema Inc

06/29/17 / #20170183457

Multistage polymer powder composition, its method of 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 Inc

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 comprising ethylene and, optionally, purification of the alkene so as to obtain ethylene, c) copolymerization of the ethylene with at least one vinyl ester, d) isolation of the copolymer obtained. Also, the copolymers of ethylene and of at least one vinyl ester in which the ethylene is at least partly obtained from renewable starting materials, and to uses thereof.. ... Arkema Inc

06/22/17 / #20170174966

Heat transfer compositions of hydrofluorocarbons and a tetrafluoropropene

. . The present invention relates to heat transfer compositions comprising 1,3,3,3-tetrafluoropropene, difluoromethane, pentafluoroethane, and 1,1,2,2-tetrafluoroethane for use in refrigeration, air-conditioning, heat pump systems, chillers, and other heat transfer applications. The inventive heat transfer compositions can possess reduced global warming potential while providing good capacity and performance.. ... Arkema Inc

06/22/17 / #20170174847

Polymer powder composition and its method of preparation

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

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 0 and ranging up to 1, and which is based on an acid component comprising, in addition to the fatty acid, from 30% to 85% by weight, relative to the total weight of said resin, of rosin and/or of derivatives thereof bearing at least one carboxylic acid function.. . ... Arkema Inc

06/22/17 / #20170174797

Low viscosity, water-borne, acrylic modified alkyd dispersion and method of production thereof

A water-borne, urethane and acrylic modified alkyd dispersion, wherein the dispersion is substantially surfactant free and has less than 1 weight % volatile organic compounds (vocs) is described. Additionally, a method for preparing a water-borne, substantially surfactant free, urethane and acrylic modified alkyd dispersion, with less than 1 weight % voc, is described. ... Arkema Inc

06/22/17 / #20170174604

Process and system for producing acrylic acid

A process for recovering (meth)acrylic acid includes distilling a mixture comprising (meth)acrylic acid in a finishing column at less than atmospheric pressure to produce a finishing column overhead stream and a finishing column bottoms stream. An overhead aspirating direct contact condenser system at least partially condenses the finishing column overhead stream to form a finishing column overhead condensate and an overhead non-condensables vent stream. ... Arkema Inc

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 Inc

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. ... Arkema Inc

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 monoperoxycarbonate or oo-tert-amyl o-isopropyl monoperoxycarbonate and oo-tert-butyl-o-2-ethyl hexyl monoperoxycarbonate or oo-tert-amyl-o-2ethyl hexyl monoperoxycarbonate. Also, a cross-linkable composition including the peroxide and to a method for producing a cross-linked polymer as a result of the peroxide.. ... Arkema Inc

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 Inc

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 material in the form of a strand or a plurality of parallel strands with the thermoplastic polymer in the form of a powder in a fluid bed; and (ii) shaping the strand or parallel strands of the fibrous material impregnated as in step (i) by calendering by at least one heating calender in the form of a single unidirectional strip or of a plurality of parallel unidirectional strips, the heating calender, in the latter case, including a plurality of calendering grooves, and the pressure and/or a spacing between the rollers of the calender being regulated by an auxiliary system.. . ... Arkema Inc

06/08/17 / #20170158803

Urethane acrylic polymers with unique physical properties

. . A polymer comprising a reaction product of the ingredients including [i] a first homopolymeric or co-polymeric polycarbonate polyol; [ii] an organic polyisocyanate; and [iii] a hydroxy-functional (meth)acrylate having the given formula; and with the proviso that when the first polycarbonate polyol is not co-polymeric, then the ingredients further includes [iv] a second homopolymeric or co-polymeric polycarbonate polyol different from the first one, and wherein the polycarbonate polyol(s) is/are linked to the polyisocyanate via a urethane linkage, and wherein the polyisocyanate is linked to the alkyl moiety of the (meth)acrylate via a urethane linkage.. . ... Arkema Inc

06/08/17 / #20170158631

Method for preparing methyl mercaptan

The present invention relates to a method for preparing methyl mercaptan, in batches or continuously, preferably continuously, said method including at least the following steps: a) reacting at least one hydrocarbon feedstock in the presence of hydrogen sulphide (h2s) and optionally sulphur (s) such as to form carbon disulphide (cs2) and hydrogen (h2); b) reacting said carbon disulphide (cs2) by hydrogenation in the presence of said hydrogen (h2) obtained in step a) such as to form methyl mercaptan (ch3sh), hydrogen sulphide (h2s) and possibly hydrogen (h2); c) optionally recirculating said hydrogen sulphide (h2s) formed during step b) to step a); and d) recovering the methyl mercaptan.. . ... Arkema Inc

05/18/17 / #20170137676

Adhesive sealing composition

An adhesive composition that can be used in an extrusion-coating process for application to a support or in an extrusion-laminating process in order to bond several supports of different or identical nature to one another, over a wide temperature range, including: from 91% to 98% by weight of the composition, of a copolymer of ethylene and of alkyl acrylate; at least one tackifying resin; processing aids, wherein the tackifying resin represents between 1.5% and 5.5% of the weight of the composition and the processing aids represent between 0.5% and 3.5% of the weight of the composition and the anti-blocking agent represents, in the processing aids, at least 60% by weight of the aids. Also, a film of the composition and a multilayer structure that includes this film.. ... Arkema Inc

05/18/17 / #20170137659

Cables coated with fluorocopolymer coatings

Coating compositions including a binder agent are disclosed. The binder agent is formed of a fluorocopolymer and a non-fluorinated film-forming polymer. ... Arkema Inc

05/11/17 / #20170130093

High solids, low viscosity urethane-linkage containing latex and method of production thereof

A latex comprising a urethane linkage and having a high solids content and a low viscosity is described herein. Also described is a process for making the urethane linkage-containing latex wherein urethane linkage formation and emulsion polymerization take place in the same processing step.. ... Arkema Inc

05/11/17 / #20170130008

Fine powder of polyamide from renewable materials and method for making such a powder

The present invention relates to a powder of polyamide pa (homopolyamide or copolyamide) derived at least partially from renewable materials, in which the particles have a nonspherical shape and a volume median diameter of less than or equal to 20 μm. The present invention also relates to a process for preparing such a powder.. ... Arkema Inc

05/11/17 / #20170130000

Polyamides based on aminoalkylpiperazine or aminoarylpiperazine for hot-melt adhesives

A semi-crystalline polyamide including at least one monomer resulting from the condensation of a diacid and of a diamine of formula ap.y, the semi-crystalline polyamide having the following general formula (i): ap.y/(a)m/(pip.y′)n/(b.y″)q and the semi-crystalline polyamide having an mp1 less than or equal to approximately 150° c., in particular less than or equal to approximately 130° c., in particular less than or equal to approximately 120° c. And/or a tg less than or equal to approximately 60° c., in particular less than or equal to approximately 50° c., in particular less than or equal to approximately 40° c., as determined respectively by dsc according to standard iso 11357-3 (2013) and iso 11357-2 (2013).. ... Arkema Inc

05/04/17 / #20170125815

Solvent-free electrode fabrication

. . The invention relates to an electrode formed by the blending of dry active powdery electrode forming materials with an aqueous binder dispersion, and the subsequent adhering of the wet binder/dry active powdery electrode-forming materials blend to an electroconductive substrate, resulting in an electrode. The aqueous binder is preferably a fluoropolymer, and more preferably polyvinylidene fluoride (pvdf). ... Arkema Inc

05/04/17 / #20170125620

Encapsulant of a photovoltaic module

An encapsulant of a photovoltaic module, intended for coating a photovoltaic cell, having a composition which does not include any cross-linking agent and including: an ethylene—alkyl acrylate copolymer, the copolymer making up 70% to 96% of the weight of the composition; a silane, making up 0.1% to 2% of the weight of the composition; wherein the composition also includes a terpolymer of ethylene—acrylic ester—maleic anhydride or glycidyl methacrylate, the terpolymer making up 2% to 29.9% of the weight of the composition. Also relates to the use of such an encapsulant in a photovoltaic module as well as to a photovoltaic module including such an encapsulant.. ... Arkema Inc

05/04/17 / #20170123116

Optical diffusion blend materials for led lighting

The invention relates to blend materials useful in led lighting applications. The diffusing particle blend is a synergistic mixture of selected organic particles and selected inorganic particles of specific composition, loading, and a refractive index difference with the matrix polymer, that provide excellent light diffusion, high hiding properties and good light transmission. ... Arkema Inc

05/04/17 / #20170122134

System for controlling a rankine cycle

A system for producing electricity, including a closed circuit of heat-transfer fluid which includes an evaporator, an expansion member, a condenser and a circulation pump, a generator being coupled to the expansion member, in which system a liquid-vapour separator provided with a liquid reservoir is positioned between the evaporator and the expansion member, the system being further provided with a control device configured to empty the reservoir if the liquid level in the reservoir reaches a maximum threshold.. . ... Arkema Inc

05/04/17 / #20170121280

Organic solvent for peroxides

A peroxide solution of organic peroxide in an organic solvent, including at least one peroxide in a solvent, the solvent having a hydrophobic alcohol wherein the main carbonated chain having the alcohol function includes at least six carbon atoms, the solution also including a second, hydrophilic alcohol solvent representing a maximum of 15% wt. % of the solution. ... Arkema Inc

04/27/17 / #20170117426

Encapsulant of a photovoltaic module

An encapsulant of a photovoltaic module, intended for coating a photovoltaic cell (10), including: a copolymer of ethylene-alkyl acrylate, the melt flow index (mfi) of the copolymer being 1 g/10 min to 40 g/10 min; and a silane making up 0.1% to 0.5% of the weight of the composition; wherein the encapsulant also includes a cross-linking agent making up 0.1% to 0.5% of the weight of the composition and wherein the copolymer makes up at least 99% of the weight of the composition. Also, a use of such an encapsulant in a photovoltaic module as well as to a photovoltaic module including such an encapsulant.. ... Arkema Inc

04/27/17 / #20170113990

Process for direct synthesis of (meth)acrolein from ethers and/or acetals

The subject matter of the present invention is a process for direct synthesis of (meth)acrolein from a reactive mixture comprising at least one compound chosen from ethers, acetals or hemiacetals derived from linear alcohols comprising from 1 to 3 carbon atoms. Examples of compounds are dimethyl ether, diethyl ether, methyl ethyl ether, dimethoxymethane, diethoxymethane, dipropoxymethane, 1,1-dimethoxyethane or 1,1-diethoxyethane. ... Arkema Inc

04/27/17 / #20170113932

Hyrogen peroxide purification process and hyrogen peroxide

A hydrogen peroxide purification process, including supplying a starting stream containing hydrogen peroxide at a content above 50 wt %, as well as at least one stabilizer; a single step of purification of the starting stream, the single step having purification by reverse osmosis; collecting a purified stream at the end of said single purification step, in which purification by reverse osmosis includes: passing the starting stream over a first membrane; collecting a permeate and a retentate from the first membrane; passing the permeate from the first membrane over a second membrane; collecting a permeate and a retentate from the second membrane, the purified stream having the permeate from the second membrane.. . ... Arkema Inc








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