Arkema France

Mathieu Sabard

Benoît Brule

Philippe Blondel

Yves Deyrail

René-Paul Eustache

Jean-Jacques Flat

Quentin P Pineau

Dominique Jousset

Benjamin Saillard

Frédéric Malet

Inci Turan-Altuntas

Regis Cipriani

Stéphane Bizet

Karine Loyen

Helena Cheminet

François Fernagut

Bernard Pees

Atsushi Yoshitake

Maliha Khusrawy

Xiong Yao

Stefania Cassiano Gaspar

Grégoire Aussedat

Stefânia Cassiano Gaspar

Martin Pouzet

Yves Derail

Marie Pommier De Santi

Rui Mao

Damien Vitry

Fumi Ariura

Jean-Jacues Flat

Quentin Patrick Pineau

A copolyamide including at least two distinct units A and XY of formula A/XY, wherein: A is a repeating unit obtained by polycondensation of: at least one Cto Camino acid, or at least one Cto Clactam, or at least one C-Cdicarboxylic acid Cb; XY is a repeating unit obtained from the polycondensation of at least one Cto Clinear aliphatic diamine (X), and at least one aromatic dicarboxylic acid (Y), to prepare a composition comprising betweenand 65% of reinforcing fibers, relative to the total weight of the composition, and for which the flexural modulus or tensile modulus, measured after an identical conditioning, does not vary by more than 20% in the temperature range from 20° C. to 40° C.

Copolyamide compositions comprising reinforcing fibers and having high modulus stability and uses thereof

The field of molded articles and fiber-reinforced thermoplastic compositions for obtaining them. The use of the reinforced thermoplastic composition for obtaining a thin molded article with reduced warpage. The composition may include: from 30 to 70% by weight of an amorphous polyamide matrix by total weight of the composition; from 30 to 70% by weight of glass fibers with a circular cross-section by total weight of the composition; and optionally additives.

Use of a reinforced thermoplastic composition

A polyamide-based polymer composition including: a) 50% to 98% by weight of a transparent amorphous polyamide; b) 1% to 15% by weight of a polymer in the form of core-shell particles; and c) 1% to 15% by weight of a polyether block and polyamide block copolymer, wherein the polyether block and polyamide block copolymer has: as a 2 mm layer, a transmittance at 560 nm of 90% or more; and a refractive index that does not differ by more than 0.01 from that of the transparent amorphous polyamide and wherein the polymer in the form of core-shell particles has a refractive index that does not differ by more than 0.01 from that of the transparent amorphous polyamide. Also, a process for the manufacture of the composition, and the composition capable of being obtained by said process.

Transparent polymeric composition

The invention relates to the use of at least one impact modifier having a refractive index IRin a polyamide matrix consisting of a mixture of amorphous polyamide and semicrystalline polyamide, said matrix having a refractive index IR2, the difference in absolute value of IR-IRnot exceeding 0.006, to produce a transparent composition having a fatigue strength, under the fatigue test referred to as notched 'Ross-Flex', greater than 50 000 at &#x2212;10&#xb0; C.

Rigid and ductile polyamide-based transparent composition and use thereof

The present invention relates to a copolymer with a rigid polyamide block and a flexible polyether or polyester block, wherein said polyamide block is semicrystalline and consists of a copolyamide of W/Y.Z type, wherein:

PEBA-based composition and use thereof for producing a fatigue-resistant transparent object

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

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

Provided is a composition including (A) 65% to 95% of a polyamide mixture, (B) 7% to 30% of at least one impact modifier or of at least one core-shell entity or of a mixture thereof, and (C) 0 to 5% of at least one additive chosen from stabilizers, dyes, plasticizers, fibers, fillers, processing aids or a mixture thereof. The composition may be used, for example, to produce an article by extruding, injection molding, molding or thermoforming.

Polyamide-based compositions that are rigid and ductile at low temperature for the preparation of sports articles obtained by injection molding

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.

Thermoplastic composition made of polyphenylene sulphide and polyamide-grafted polyolefin

A composition including: between 45 and 94.95 wt. % of a matrix having at least one polyamide; between 0.05 and 20 wt. % of at least one prepolymer, the proportion by weight of the polyamide matrix and that of the prepolymer being respectively between 60 and 99.9 wt. % and between 40 and 0.1 wt. % in relation to the total amount of polyamide-prepolymer; between 5 and 45 wt. % of at least one impact modifier; and between 0 and 20% of an additive, said composition having a higher level of fluidity in the melted state than the same composition without prepolymer.

Impact-modified thermoplastic composition having a higher level of fluidity in the melted state

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

A composition including at least two grafted copolymers, having a polyolefin trunk and polyamide grafts, the polyamide grafts being 15% to 25% by weight of the composition. Also, a multilayered structure including a plurality of adjacent layers, at least one of which has the above composition. The first grafted copolymer is a polyolefin backbone containing a residue of at least one unsaturated monomer (X) and a plurality of polyamide grafts, the polyamide grafts are attached to the polyolefin backbone by the residue of the unsaturated monomer (X). The second copolymer is a grafted elastomeric copolymer of a polyolefin backbone.

Nanostructured thermoplastic polyamide-grafted polyolefin composition

A polyolefin graft polyamide composition incorporating lamellar nanofillers. Also, a tube, pipe or analogous formed from a multilayer at least one of the layers of which contains this composition. A thermoplastic composition having a polyolefin backbone containing a residue of at least one unsaturated monomer and a plurality of polyamide grafts, and also another component, wherein: the polyamide grafts are attached to the polyolefin backbone by the residue of the unsaturated monomer comprising a function capable of reacting via a condensation reaction with a polyamide having at least one amine end group and/or at least one carboxylic acid end group, the residue of the unsaturated monomer is attached to the backbone by grafting or copolymerization, wherein the other component consists of platy nanofillers, said nanofillers being phyllosilicates and representing from 1% to 6.5% by weight of the composition.

Growing community of inventors

Serquigny, France

Mathieu Sabard