Arkema France

Guillaume Le

Julien Jouanneau

Benoît Brule

Fabien Sguerra

Jérome Amstutz

Philippe Bussi

Jérôme Amstutz

Nicolas Dufaure

Samuel Devisme

Frederic Malet

Jean-Laurent Pradel

Cyrille Mathieu

Jerome Pascal

Frédéric Malet

Reinhard Linemann

Fabrice Chopinez

Guillaume Vincent

Henri-Alexandre Cayzac

Thomas Roussel

Jean-Luc Dubois

Gilles Hochstetter

Jean-Luc Couturier

Thierry Briffaud

Manuel Hidalgo

Karine Loyen

Serge Hub

Pierre Nogues

Steven Gabriel Schon

Ilias Iliopoulos

Laurent B Cartier

Barbara Ramfel

Georges Martino-Gauchi

Geoffroy Cammage

Stéphanie Lebrun

Fabrice R Chopinez

Jean Jacques Flat

Perrine Babin

Christophe Caremiaux

Jean Laurent Pradel

Martin Herblot

Salomé Gravelat

John Richardson

Steven Schon

A process for the preparation of a semifinished product including a PAEK-based resin and reinforcing fibers, including the stages of: a. preparation of a dispersion including a PAEK-based resin in the pulverulent form dispersed in an aqueous phase including a surfactant; b. bringing the reinforcing fibers into contact with said aqueous dispersion; c. drying the fibers impregnated with dispersion; and d. heating the impregnated fibers to a temperature sufficient for the melting of the resin, so as to form a semifinished product, wherein the surfactant is a thermally stable surfactant. Also, semifinished products capable of being obtained from the process and their use in the manufacture of composite materials.

Method for impregnating reinforcing fibres with polyaryletherketones and semi-products obtained therefrom

A composition based on poly(arylene ether ketone) (PAEK) which is stable in the molten state, characterized in that it includes a phosphate salt or a mixture of phosphate salts, a process for the stabilization of a composition based on PAEK incorporating said phosphate salts and objects manufactured using the composition.

Composition made from poly(arylene-ether-ketone) (PAEK) which is stable in the molten state and method for stabilizing such a composition

A process for preparing a semifinished product comprising a PAEK-based resin and reinforcing fibers, including: preparing a dispersion comprising a PAEK-based resin in pulverulent form dispersed in an aqueous phase including at least one volatile organic compound and optionally a surfactant; bringing the reinforcing fibers into contact with said aqueous dispersion; drying the fibers impregnated with dispersion; and heating the impregnated fibers to a temperature sufficient for the melting of the resin, so as to form a semifinished product, wherein the aqueous phase of the dispersion has a dynamic viscosity, measured at 25° C. under a shear stress of 6.8 son a Brookfield DV2T Extra viscometer, is between 0.1 and 25 Pa·s; and wherein when the surfactant is present, its content is less than 1% by weight relative to the mass of dispersed resin.

Method for impregnating reinforcing fibers with polyaryletherketones and semi-finished products obtained in this way

The invention is targeted mainly at a process for the preparation of a semifinished product comprising a PAEK-based resin and reinforcing fibers, comprising the stages of:

The present invention relates to esters of at least one polyol and of a mixture of fatty acids comprising at least one C-Csaturated fatty acid and at least one C-Cunsaturated fatty acid.

Lubricating base oil synthesized from biosourced polyol and fatty acids esters

A method for manufacturing 1,4-bis(4-phenoxybenzoyl)benzene, including: providing a solvent, a Lewis acid, a first reactant and a second reactant, wherein the first reactant and the second reactant are respectively terephthaloyl chloride and diphenyl ether, or reversely; mixing the first reactant in the solvent to make a starting mixture; and, adding the second reactant to the starting mixture; wherein the Lewis acid is mixed, at least partly, to the starting mixture before adding the second reactant to the starting mixture, and/or wherein the Lewis acid is mixed, at least partly, with the second reactant and added together to the starting mixture, and wherein the temperature of the starting mixture is greater than 5&#xb0; C. during at least part of the step of adding the second reactant to the starting mixture; so as to obtain a product mixture comprising a 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex.

Method for manufacturing 1,4-bis (4-phenoxybenzoyl)benzene at an elevated temperature

The use of a sulfonated polyaryl ether ketone or of a sulfonated non-polymeric aryl ether ketone as a dispersant for a polyaryl ether ketone resin powder in an aqueous solution, and also to a corresponding composition, and to a process for preparing a semifinished product comprising a polyaryl ether ketone resin and reinforcing fibers.

Use of a sulfonated polyaryl ether ketone or of a sulfonated non-polymeric aryl ether ketone as a dispersant

A method for manufacturing 1,4-bis(4-phenoxybenzoyl)benzene, including: reacting terephthaloyl chloride with diphenyl ether in a reaction solvent and in the presence of a Lewis acid, so as to obtain a product mixture including a 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex; contacting the product mixture with an aqueous solution, so as to obtain an aqueous phase containing the Lewis acid and an organic phase containing 1,4-bis(4-phenoxybenzoyl)benzene; heating at least the second phase up to a maximum temperature, followed by cooling the second phase down to a separation temperature; subjecting at least the second phase to a solid/liquid separation step at the separation temperature, so as to recover solid 1,4-bis(4-phenoxybenzoyl)benzene.

Dissociation of a 1,4-bis (4-phenoxybenzoyl)benzene-lewis acid complex in an aqueous solution

The present invention relates to the use of thermoplastic starch in the manufacture of an adhesive and ultrathin waterproof-breathable film, said thermoplastic starch being provided in the form of an alloy with hydrophilic TPE comprising at least 10% by weight, preferably at least 20% by weight, preferably at least 30% by weight, preferably at least 40% by weight, preferably at least 50% by weight, of polyethylene glycol (PEG), with regard to the weight of the TPE. This film can be used in a textile product in the medical field, hygiene, luggage, the clothing industry, the garment industry, domestic or household equipment, furniture, fitted carpets, the automobile industry, industry, in particular industrial filtration, agriculture and/or the construction industry.

Use of an alloy of thermoplastic starch and TPE in the manufacture of an adhesive ultrathin waterproof-breathable film

The invention relates to a block copolymer derived from at least one ethylene oxide and/or propylene oxide monomer containingC. The present invention also relates to a method for preparing such a block copolymer.

Block copolymer derived from renewable materials and method for making such a block copolymer

The invention concerns a method for producing polyamide from an amino ester of formula NH&#x2014;(CH)&#x2014;COOR, in which R represents an alkyl group and n represents an integer ranging from 5 to 14, comprising:

Polyamide synthesis method

Provided is a composition suitable for a process of building a three-dimensional object layer-by-layer by electromagnetic radiation-generated sintering, including at least one poly(aryl-ether-ketone) (PAEK), where the composition has an aromatic ether content of from 0 and 0.4% by mass, based on the total mass of the composition, and an aluminium mass content of lower than 1000 ppm. The composition may be used in process for building an object comprising sintering the composition with electromagnetic radiation. The present invention also includes a three-dimensional object obtained by such a process. A process for preparing the composition is also provided.

Poly&#x2014;(aryl-ether-ketone) (PAEK) composition with a low content of volatile compounds and use of same in a sintering method

A method for stabilizing a composition made from PAEK, said method including a step of incorporating a stabilizing agent against thermo-oxidation phenomena, said method being characterized in that said incorporated stabilizing agent is a phosphate salt, or a mixture of phosphate salts. The phosphate salt is incorporated into the composition based on PAEK by one of the following techniques: dry blending, compounding, wet impregnation or during the process for synthesizing the PAEK polymer.

Method for stabilising a composition made from poly(arylene-ether-ketone) (PAEK)

A method for the manufacture of polyether ketone ketone (PEKK), including the steps of: reacting 1,4-bis(4-phenoxybenzoylbenzene) and/or diphenylether with at least one difunctional aromatic acyl chloride, in a reaction solvent and in presence of a Lewis acid, to obtain a product mixture including a PEKK-Lewis acid complex; contacting the obtained product mixture with a protic solvent, so as to form a dispersion that includes a liquid phase including Lewis acid and a second phase, e.g., a solid phase, including PEKK; and separating the second phase from the liquid phase by centrifugal filtration, so as to recover a crude PEKK and a effluent containing Lewis acid, wherein step (iii) includes a step of centrifugal filtration.

Purification of poly ether ketone ketone by centrifugal filtration

A method for manufacturing 1,4-bis(4-phenoxybenzoyl)benzene, including: providing terephthaloyl chloride, diphenyl ether, a solvent and a Lewis acid, wherein the terephthaloyl chloride is of a purity grade such that, 10 minutes after introducing it at a reference concentration of 6.5 wt. % into said solvent, at a temperature of 20&#xb0; C., a solution is obtained having a turbidity of less than 500 NTU; mixing the terephthaloyl chloride, the diphenyl ether and the solvent so as to make a reactant mixture; adding the Lewis acid to the reactant mixture so as to effect the reaction of the terephthaloyl chloride with the diphenyl ether; recovering a product mixture comprising a 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex.

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Colombelles, France

Guillaume Le