Abstract: A thermoplastic composite material including: a) from 65% to 95% by weight of at least one reactive semicrystalline polyamide prepolymer with an average molecular mass Mn of less than or equal to 8000 g/mol and having a volume-mean diameter D50 of the reactive semicrystalline polyamide prepolymer powder particles ranging from 10 to 300 ?m, b) from 5% to 35% by weight of at least one flame retardant chosen from an at least partially meltable flame retardant in powder form and a non-meltable flame retardant in premilled powder form with a volume-mean diameter D50 of from 1 to 50 ?m, and c) from 0 to 2% by weight of at least one meltable or non-meltable additive with a volume-mean diameter D50 of from 1 to 50 ?m if it is non-meltable and in powder form.

Abstract: A composition for a thermoplastic composite material including: a) from 65% to 95% by weight of at least one reactive semicrystalline polyamide prepolymer with an average molar mass Mn of less than 5000 g/mol and having a volume-mean diameter D50 of the reactive semicrystalline polyamide prepolymer powder particles ranging from 10 to 300 ?m, b) from 5% to 35% by weight of at least one flame retardant chosen from an at least partially meltable flame retardant in powder form and having a volume-mean diameter D50 of from 10 to 300 ?m, and a non-meltable flame retardant in premilled powder form with a volume-mean diameter D50 of from 1 to 50 ?m, and c) from 0 to 2% by weight of at least one additive, and said reactive polyamide prepolymer comprising or consisting of at least one Z/BACT/XT copolyamide.

Abstract: The invention relates to the use of a composition comprising at least one polyamide, of which at least one is a semicrystalline copolyamide comprising at least one minor motif resulting from the polycondensation of: at least one diamine with at least one polymerised fatty acid, in particular a fatty acid dimer; or at least one diamine dimer with at least one carboxylic acid; or at least one amino acid dimer; or mixtures of same, as a sealing coating in a pipe containing oil or gas, said pipe being used in the operation of offshore oil or gas deposits.

Abstract: The invention relates to a copolymer containing rigid polyamide PA blocks and flexible blocks, characterized in that it includes at least one carboxylic acid chain end blocked with a polycarbodiimide, said copolymer according to the invention being in noncrosslinked linear form. The invention also relates to the use of a polycarbodiimide in a process for manufacturing a copolymer containing rigid polyamide PA blocks and flexible blocks, including at least one carboxylic acid chain end, for improving the extrudability of the copolymer, the drawability of the copolymer, the abrasion resistance, the tear strength and the durability of the copolymer, without increasing its dispersity.

Abstract: Multi-layer structure intended for storing hydrogen, including, from the inside out, a sealing layer and a composite reinforcing layer, the innermost composite reinforcing layer being wound around the outermost adjacent sealing layer, at least the innermost sealing layer being made of a composition including: a. 20.5 to 99.845% by weight of a polyamide; b. 0.005 to 0.5% by weight of a catalyst; c. 0.05 to 1% by weight of a heat stabilizer; d. 0.1 to 3% by weight of a oligo- or poly-carbodiimide; e. 0 to 1.5% by weight of a plasticiser; f. 0 to less than 15% by weight of a polyolefin; g. 0 to 30% of an additive, and at least one of the composite reinforcing layers of a fibrous material in the form of continuous fibres impregnated with a composition including at least one polymer P2j, j=1 to m, m being the number of reinforcing layers.

Abstract: A linear aliphatic polyamide obtained by polycondensation of at least one linear aliphatic unit chosen from a C6 to C12 alpha, omega-aminocarboxylic acid, a C6 to C12 lactam and a (Ca-diamine).(Cb-diacid) unit, with a representing the number of carbon atoms of the diamine and b representing the number of carbon of the diacid, a and b being between 4 and 18, the polyamide having a difference, expressed as an absolute value, between its total acidity and its total basicity of between 35 and 180, and a total basicity or a total acidity strictly less than 35 ?eq/g. Also, a method for its preparation and to its uses in the textile field.

Abstract: The present invention relates to a process for treating a polyamide-based composition which is intended to be recycled. More particularly, the present invention relates to a process for treating a composition, typically a powder based on untransformed polyamides during the manufacture of an object in 3D printing. The invention also relates to the use of the recycled composition.

Abstract: The invention relates to a self-retardant copolyesteramide, characterised in that it is obtained by means of polycondensation of at least one polyamide monomer with at least one phosphorus-containing diol. The invention also relates to the use of such a copolyesteramide according to the invention for the manufacture of electrical and/or electrotechnical objects, tubes, cables, electrical safety objects, moulded objects, and/or objects obtained by 3D printing.

Abstract: The invention relates to the use of at least one catalyst, at least one copper heat stabiliser and at least one oligo- or poly-carbodiimide with a matrix including at least one polyamide, in order to form a composition that has a good melt viscosity and is stable during transformation, in particular during extrusion.

Abstract: The use of at least one catalyst, at least one copper heat stabiliser and at least one oligo- or poly-carbodiimide with a matrix including at least one polyamide, in order to form a composition that has a good melt viscosity and is stable during transformation, in particular during extrusion.

Abstract: Process for the preparation of flame-retarded parts by powder bed fusion, in which the powder comprises at least one polyamide and at least one flame-retardant agent of cyclic phosphonate ester type.

Abstract: The invention relates to a copolymer containing rigid polyamide PA blocks and flexible blocks, characterized in that it includes at least one carboxylic acid chain end blocked with a polycarbodiimide, said copolymer according to the invention being in noncrosslinked linear form. The invention also relates to the use of a polycarbodiimide in a process for manufacturing a copolymer containing rigid polyamide PA blocks and flexible blocks, including at least one carboxylic acid chain end, for improving the extrudability of the copolymer, the drawability of the copolymer, the abrasion resistance, the tear strength and the durability of the copolymer, without increasing its dispersity.

Abstract: The invention relates to the use of a composition comprising at least one polyamide, of which at least one is a semicrystalline copolyamide comprising at least one minor motif resulting from the polycondensation of: at least one diamine with at least one polymerised fatty acid, in particular a fatty acid dimer; or at least one diamine dimer with at least one carboxylic acid; or at least one amino acid dimer; or mixtures of same, as a sealing coating in a pipe containing oil or gas, said pipe being used in the operation of offshore oil or gas deposits.

Abstract: 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.

Abstract: A composition including at least two grafted copolymers having a polyolefin basic polymer chain and polyamide grafts, the polyamide grafts being 5 wt % and 35 wt % of the composition bonded to the first and second copolymer as well as a third component selected among certain polyamides, polyethylenes or polypropylenes or a mixture thereof. Also, a multilayer structure including a plurality of adjacent layers, at least one of which is the aforementioned composition.

Abstract: The present invention relates to compositions comprising a copolymer comprising at least one segment of a polyolefin and at least one segment of a polyamide, said composition additionally comprising piperazine pyrophosphate and, if appropriate, a coloring additive. The present invention also relates to a method for the manufacture of these compositions and to the use of the latter in the manufacture of jacket for metal cables, of electrical parts, such as electrical connectors or electrical engineering housings, of thermal protection jackets or sleeves, of injection-molded parts for electronic equipment, such as computers and telephones, of monolayer or multilayer tubes or of bellow tubes, preferably in the manufacture of jacket for metal cables. Finally, it also relates to the electronic, electrical or thermal protection components comprising said composition.

Abstract: A polyamide-grafted polyolefin composition in which the grafting rate of the composition is between 41% and 70% by weight. Also, a thermoplastic composition including a polyolefin backbone comprising a residue of at least one unsaturated monomer (X) and a plurality of polyamide grafts, in which: the polyamide grafts are attached to the polyolefin backbone by the residue of the unsaturated monomer (X) comprising a functional group capable of reacting by a condensation reaction with a polyamide having at least one amine end and/or at least one carboxylic acid end, the residue of the unsaturated monomer (X) is attached to the backbone by grafting or copolymerization, wherein the polyamide grafts represent from 41% to 70%, preferably from 45% to 70%, by mass of said polyamide-grafted polymer. Also, a thermoplastic film for encapsulating and/or protecting the back (“backsheet”) of a photovoltaic module that includes said polyamide-grafted polyolefin composition.

Abstract: A thermoplastic composition including a mixture of three particular and different polyolefins, including one of a polyamide-grafted polyolefin having particular polyamide grafts (type and quantity), for example, a polyamide-grafted polymer having a polyolefin trunk containing a residue of at least one unsaturated monomer and a plurality of polyamide grafts. Also, a thermoplastic film and, more specifically, a film for encapsulating a photovoltaic module incorporating the polyamide-grafted polyolefin composition.

Abstract: 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.

Abstract: The invention relates to the use of at least one catalyst, at least one copper heat stabiliser and at least one oligo- or poly-carbodiimide with a matrix including at least one polyamide, in order to form a composition that has a good melt viscosity and is stable during transformation, in particular during extrusion.