Arkema France

Arkema Inc.

Yves Deyrail

Mathieu Sabard

René-Paul Eustache

Gilles Hochstetter

Philippe Blondel

Philippe Bussi

Quentin P Pineau

Jason M Lyons

Bruce Clay

Timothy A Spahr

Richard Audry

François Fernagut

Benoît Brule

Thibaut Montanari

Thierry Briffaud

Mathieu Capelot

Nadine Decraemer

Frédéric Malet

Clio Cocquet

Helena Cheminet

Atsushi Yoshitake

Inci Turan-Altuntas

Sylvain Benet

Zhenzhong Li

Martin Pouzet

Aude Chiquot

Lionel Jeancolas

Lise Deves

Adrian Causier

Thomas Boucheres

A method for manufacturing at least one impregnated fibrous material including a fibrous material made of continuous fibers and at least one thermoplastic polymer, the method including a step of impregnating the at least one fibrous material in a pultrusion head by injecting a reactive composition in the melt state including at least one precursor of the thermoplastic polymer in the presence of the fibrous material, the at least one fibrous material on entry into the pultrusion head being divided in its thickness into layers, with each layer circulating in its own channel within the pultrusion head, the reactive composition being injected into each channel and/or between the layers when they are recombined at the exit from each channel, the channel being heated, in which the precursors of the thermoplastic polymer are at least partly polymerized.

Method for preparing an impregnated fibrous material by reactive pultrusion

The present invention concerns an impregnated fibrous material comprising at least one continuous-fiber fibrous material in the form of a roving or a plurality of parallel rovings and at least one thermoplastic polymer matrix, characterized in that said at least one thermoplastic polymer is an amorphous or semi-crystalline polymer having a glass transition temperature such that Tg≥40° C., especially Tg≥100° C., in particular ≥120° C., the fiber content of said impregnated fibrous material being from 45 to 65% by volume, preferably from 50 to 60% by volume, especially from 54 to 60% by volume, the number-average molecular mass Mn of said thermoplastic polymer being from 11,000 to 25,000 g/mol, the melt viscosity of said thermoplastic polymer being from 80 to 1500 Pa·s, as measured by plane-plane rheology at 1 Hz and 2% deformation, at a temperature of Tg+220° C.

Fibrous material impregnated with thermoplastic polymer of optimum molecular mass and viscosity and method for the production thereof

A method of manufacturing a semi-crystalline article from at least one pseudo-amorphous polymer including a poly aryl ether ketone, such as PEKK, including a softening step, wherein the at least one pseudo-amorphous polymer is heated to a temperature above its glass transition temperature to soften the polymer, and a crystallization step, wherein the at least one pseudo-amorphous polymer is heated to a temperature between its glass transition temperature and melting temperature, the pseudo-amorphous polymer being placed on a mold during either the softening step or the crystallization step before at least some crystallization takes place. The method results in articles demonstrating increased opacity, increased crystallinity, increased thermal resistance, improved chemical resistance, and improved mechanical properties over articles formed by traditional thermoforming processes.

Production of semicrystalline parts from pseudo-amorphous polymers

The present invention relates to a non-crosslinked block copolymer foam composition, characterised in that it is in the form of a polymer matrix comprising closed cells containing gas, said matrix comprising: The present invention also relates to a foamable composition and a method for manufacturing said foam, as well as the use of the foam in sports shoe soles, balloons or balls, gloves, personal protection equipment, rail soles, automobile parts, construction parts, electrical and electronic equipment parts, audio equipment, sound- and/or heat-proofing, and parts used to damp vibrations.

Non-crosslinked copolymer foam composition with polyamide blocks and polyether blocks

The invention relates to the use of at least one prepolymer in a composition which includes: a matrix of at least one transparent semi-crystalline polyamide, and optionally at least one additive, for improving the crystallisation kinetics and reducing the warping of the composition while preserving or improving the transparency properties thereof as well as the mechanical properties thereof, in comparison with the same composition without a prepolymer, wherein the composition does not contain a nucleating agent.

Use of a prepolymer in transparent thermoplastic compositions, compositions comprising same and uses thereof

A tube connector made from a polyamide composition, the polyamide composition including at least one first polyamide A having an average number of carbon atoms per nitrogen atom Cand at least one second polyamide B having an average number of carbon atoms per nitrogen atom C, wherein C&#x2264;8.5 and C&#x2265;7.5, and wherein C&#x3c;C. The composition may include a third polyamide C having an average number of carbon atoms per nitrogen atom C, wherein C&#x2264;C.

Tube connectors based on a polyamide composition

The invention relates to a composition comprising: This composition has advantageous properties of transparency and impact strength, especially for the manufacture of sports articles.

Transparent impact-resistant composition

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 (T) below 75&#xb0; 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.

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

The invention relates to a copolymer having polyamide PA blocks and polyether PE blocks, in which PA is of diamine.diacid X.Y type; X, the number of carbons of the diamine, is within the range from 6 to 14, and Y, the number of carbons of the diacid, is within the range from 6 to 18. The invention also relates to the use of the said copolymer in a process of direct adhesion between two TPE materials for increasing the peel strength between these materials.

PEBA for direct adhesion to TPE

The invention concerns a composition comprising a first polyamide, a second polyamide, different from the first polyamide, and 0.1 to 5% by weight of carbonaceous nanofillers, in which: a) the first polyamide comprises a unit derived from the condensation of meta-xylylene diamine or from a mixture of meta-xylylene diamine and para-xylylene diamine with sebacic acid, said first polyamide having a melting temperature Tf; and b) the second polyamide has a melting temperature Tfhigher than or equal to Tf&#x2212;40&#xb0; C. The invention also relates to a method for producing said composition and the use thereof for producing various items.

Composition made from polyamide MXD.10

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Aviron, France

Yves Deyrail