Abstract: 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. Even more particularly, the invention relates to a copolymer containing at least one polyamide (PA) block, at least one polyethylene glycol (PEG) block and at least one block that is more hydrophobic than the PEG block. A subject of the invention is also a process for synthesizing such thermoplastic elastomers which have good antistatic properties and the use thereof in any type of thermoplastic polymer matrix in order to afford this matrix antistatic properties.

Abstract: 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).

Abstract: Composition comprising, on a weight basis, the total being equal to 100%: from 98% to 100% of at least one copolyamide bearing amide units and polyether units, having a melting point (Tm) from about 90 to about 150° C., in particular from about 100° C. to about 125° C., and having a flexural modulus of less than 100 MPa, as determined according to standard ISO 178 (2010); from 0 to 2% of at least one additive chosen from stabilizers and dyes, or a mixture thereof, for the manufacture of a heat-sensitive adhesive, in particular a veil, a film, granules, a filament, a grate, a powder or a suspension.

Abstract: The use of an aqueous polymer dispersion including at least one amorphous polymer having a Tg varying between 55° C. and 175° C. or a semi-crystalline polymer having a melting point varying between 70° C. and less than 220° C., the weight concentration of the polymer in the dispersion varying between 5 and 50%, with the polymer particles having an average size of less than 10000 nm, as a binder for impregnating strands or strips of natural fibres, in particular flax fibres, with said polymer being incorporated in the core of the fibre bundle forming the strand or strip and thereby binding the fibres together.

Abstract: A method for impregnating strands or strips of natural fibres, using the following successive steps: i) the impregnation of the strands or strips by immersion in a bath containing a fine aqueous polymer dispersion; followed by ii) the drying of the strands or strips using a heating system, with the progressive elimination of the water and the gradual melting of the polymer, and the coating of the strands or strips and the molten polymer incorporated into the core of the strands or strips as a binder between the fibres; iii) optionally, the forming of the treated strands or strips into their final shape; and iv) the cooling of the treated strands or strips. The aqueous polymer dispersion comprises at least one semi-crystalline or amorphous polymer and, in the case of an amorphous polymer, has a Tg varying between 50° C. and 175° C.

Abstract: 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.

Abstract: The present invention relates to a composition including, by weight, the total being 100%: 50 to 99% of a curable resin and of a curing agent in a molar ratio in the range of 1/5 to 5/1, and 1 to 50% of a mixture: of a polyamide which includes at least one monomer resulting from the condensation of a diacid and of a diamine of formula (1) where: R1 is H or —Z1-NH2 and Z1 is an alkyl, a cycloalkyl or an aryl having up to 15 carbon atoms, and R2 is H or —Z2-NH2 and Z2 is an alkyl, a cycloalkyl or an aryl having up to 15 carbon atoms, R1 and R2 being either identical or different, and of an oligomer made from butadiene and acrylonitrile which are terminated by carboxyl functions or by amine functions, such as the reactive rubbers CTBN or ATBN; the polyamide and the oligomer being present in respective proportions of 1/10 to 10/1 by weight.

Abstract: The present invention relates to novel supramolecular materials made of straight or branched oligoamides, terminated at each of the ends thereof by an associative group including a nitrogen heterocycle supported by a specific sequence. The invention also relates to the method for preparing said materials, as well as to the uses thereof.

Abstract: A powder of polyamide particles, in which: said polyamide includes more than 50 mol % of amine ends among the total number of amine and acid ends of the polyamide; said particles include, on the surface thereof, primary amine groups neutralized by a phosphorous Bronsted acid, such as phosphoric acid; and the D50 of the particles falls within the range of 100 nm to 50 ?m, preferably 100 nm to 20 ?m. A method for producing such a powder and to the production of aqueous dispersions including same.

Abstract: A monofilament made from a polyamide composition including at least 70 wt. % of a polyamide resulting from the condensation of: an aliphatic diamine having 4 to 18 carbon atoms, together with a (cyclo)aliphatic diacid having 10 to 18 carbon atoms, and with an aliphatic monocarboxylic acid having 2 to 12 carbon atoms as a chain stopping agent. Also, a process for making this monofilament.

Abstract: A gasket for a battery, wherein the gasket is made from a polyamide composition including at least 70 wt. % of a polyamide X.Y, wherein X and Y represent respective residues from the condensation of an aliphatic diamine comprising 4 to 18 carbon atoms, and preferably 5 to 12 carbon atoms, with a (cyclo)aliphatic diacid including 10 to 18 carbon atoms, and wherein the polyamide composition further includes a nucleating agent.

Abstract: The invention relates to a composition including 30 to 97 wt % of at least one semi-aromatic polyamide, 2 to 50 wt % of white pigments, 0 to 50 wt % of strengthening agents, 0.1, to 10 wt % of at least one metal hydroxide and/or of at least one metal oxide other than a metal oxide, and up to 3 wt % of an organic phosphite. The invention also relates to the use of said composition for forming all or part of an electronic component, as well as to a reflector having a light-emitting diode (LED) and entirely or partially consisting of a material obtained form said composition.

Abstract: The invention relates to a copolyamide comprising units resulting from the polycondensation reaction of the following precursors: terephthalic acid (a), an aliphatic diamine (b) comprising x carbon atoms, x being an integer between 6 and 22, and an aminocarboxylic acid and/or a lactam (c) comprising a main chain and at least one linear or branched alkyl branching, the total number of carbon atoms of the aminocarboxylic acid and/or of the lactam (c) being between 12 and 36. The invention also relates to the process for preparing said copolyamide and to a composition comprising such a copolyamide.

Abstract: The invention relates to a composition containing between 0.1 and 30 wt.-% copolyamide (COPA) and between 70 and 99.9 wt.-% of a medium acceptable for cosmetic, perfume and/or pharmaceutical use. In particular, the invention relates to a method for incorporating a copolyamide into a cosmetic, perfume and/or pharmaceutical medium. The invention also relates to the use of a copolyamide (COPA) for the production of a cosmetic, pharmaceutical or perfume product, said COPA being incorporated in the form of a composition in accordance with the invention.

Abstract: The invention relates to a copolyamide containing at least two patterns (monomers) and of the following general formula A/(Cz diamine)·(Cw diacid) in which: z is the number of carbon atoms of the diamine and w is the number of carbon atoms of the diacid; and A is selected from a pattern obtained from an amino acid and a pattern of the general formula (Cx diamine)·(Cy diacid)y, wherein x is the number of carbon atoms of the diamine and y is the number of carbon atoms of the diacid, the amino acid, each diamine and each diacid being obtained from a renewable raw material according to ASTM D6866 standard. The invention also relates to a composition containing the copolyamide and to the use of this copolyamide and of such a composition, essentially for producing thermofusable glues, in any form thereof.