Abstract: The present invention relates to an impact modified polyamide composition. In particular, the present invention relates to impact modified transparent polyarnide compositions comprising a multistage polymer. More particularly, the present invention relates to the use of multistage polymer as impact modifier in a transparent polyamide composition.

Abstract: A copolymer containing polyether blocks and polyamide blocks for manufacturing an inflatable catheter element, such as a catheter balloon, with improved bursting strength, in which said copolymer has the following characteristics: number-average molecular mass of the PE blocks greater than 500 g/mol, and number-average molecular mass of the PA blocks greater than 10 000 g/mol.

Abstract: The invention relates to a method for converting a polycondensed elastomeric thermoplastic polymer, including a step of extruding the polycondensed elastomeric thermoplastic polymer in the presence of water. The polycondensed elastomeric thermoplastic polymer is in particular chosen from copolymer block amides, copolyethers or copolyester block urethanes, copolyether block esters and the mixtures thereof, and is preferably a copolyether block amide.

Abstract: The invention concerns a method for producing polyamide from an amino ester of formula NH2—(CH2)n—COOR, in which R represents an alkyl group and n represents an integer ranging from 5 to 14, comprising: a first reaction step in the presence of water, at a first temperature; followed by a second reaction step at a second temperature higher than the first temperature.

Abstract: The invention relates to a copolymer comprising at least two distinct polyamide blocks and at least one polyether block, and a method for preparation of said copolymer comprising the following steps:—in a first step, the polyamide block PA1 is prepared by polycondensation of chosen monomers: amino acids, lactames or diamines and dicarboxylic acids, in the presence of an appropriate chain limiter;—then, in a second optional step, the polyamide PA1 block obtained is reacted with all or part of the polyether PE blocks, in the presence or absence of a catalyst;—in a third step, the polyamide PA2 block is prepared by polycondensation of the chosen isomers: amino acids, lactams or diamines and dicarboxylic acids, in the presence of an appropriate chain limiter;—in a fourth optional step, the polyamide PA2 block obtained is reacted with all or part of the polyether PE blocks, in the presence or absence of a catalyst;—in a fifth step, PA1 or the reaction medium from step 2 is reacted with PA2 or the reaction medium f

Abstract: A transparent antistatic composition based on polymethyl methacrylate (PMMA), including: 55% to 99.9% by weight of PMMA, and 0.1% to 45% by weight of at least one polyamide (PA) block-containing and polyether (PE) block-containing copolymer (PEBA) including polyethylene glycol (PEG), with respect to the total composition weight, said copolymer including in the range 50% to 80% by weight of PEG with respect to the total weight of copolymer. Also, the use of a composition of this type for the manufacture of at least a portion of the following items: an industrial part, an automobile part, a safety accessory, sign, luminous strip, signalling and advertizing panel, display, etching, furniture, shop fitting, decoration, contact ball, dental prosthesis, ophthalmological implant, membrane for hemodialysis, optic fibers, artwork, sculpture, camera lenses, disposable camera lenses, printing support, in particular a support for direct printing with UV inks for pictures, photographs, window glass, panoramic roof.

Abstract: The present invention relates to compositions based on a copolymer comprising homo- or copolyamide polyamide blocks (PA blocks), with the exclusion of completely aromatic PA blocks, and polyether blocks comprising: a) 500 to 10 000 ppm of at least one phenolic antioxidant; b) 0 to 5000 ppm of at least one antioxidant based on phosphorus or based on sulphur; c) 0 to 5000 ppm of at least one UV absorber; d) 200 to 3000 ppm of at least one methylated hindered amine light stabilizer or HALS and/or 200 to 1300 ppm of at least one nonmethylated HALS.

Abstract: 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.

Abstract: 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 at least one hydrophilic functionalized polyolefin obtained either by copolymerization or by grafting of a polyolefin backbone with an unsaturated monomer, said unsaturated monomer being grafted by PEGs and/or forming a metal salt. 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.

Abstract: The invention relates to a method for converting a polycondensed elastomeric thermoplastic polymer, including a step of extruding the polycondensed elastomeric thermoplastic polymer in the presence of water. The polycondensed elastomeric thermoplastic polymer is in particular chosen from copolymer block amides, copolyethers or copolyester block urethanes, copolyether block esters and the mixtures thereof, and is preferably a copolyether block amide.

Abstract: The present invention is a copolymer based on amide units and ether units, wherein the amide units being comprise a major portion of an equimolar combination of at least one diamine and at least one dicarboxylic acid, the diamine(s) is/are mainly cycloaliphatic and the dicarboxylic acid(s) is/are mainly linear and aliphatic, the amide units optionally comprise, but in a minor proportion, at least one other polyamide comonomer, the respective proportions of ether and amide unit monomers are selected in such a way that said copolymer is highly transparent to such an extent that the transmittance at 560 nm on a plate 2 mm thick is greater than 75%; the crystallinity of said copolymer is such that the enthalpy of fusion during the first heating of a ISO DSC (delta Hm(2)) is at least 30 J/g, where the mass is related to the number of amide units contained or of polyamide contained, which fusion corresponds to that of the amide units; and said copolymer has a glass transition temperature of at least 75° C.

Abstract: The invention relates to a process for producing a shaped article having excellent mechanical properties, said article comprising a block copolymer PAX.Y/PE comprising polyamide (PA) blocks alternating with polyether (PE) blocks, prepared from homopolyamide blocks PAX.Y by polycondenstation of linear aliphatic diamines where PAX.Y is selected from the group consisting of PA 10,12; PA 6,18; PA 10,14; and PA 12.12, reacted with polyether PE blocks in the presence of a catalyst to produce a block copolymer PAX.Y/PE, wherein said PE blocks are either PE diols, or PE blocks comprising NH2 ends. The articles formed are either a fabric, film, sheet, rod, pipe, injection-molded component, or a shoe sole; the copolymer PAX.Y/PE has an improved flexural modulus of at least 300 MPa greater than a copolymer polyamide 12/polytetrametylene with the same size of PA block and with the same size of PE block respectively.

Abstract: A liquid composition including between 1 and 15 parts by weight of PEBA to 100 parts by weight of solvent, wherein: said solvent includes between 1 and 49% by volume of alcohol low in C1 to C4 and between 51 and 99% by volume of a cosolvent miscible with alcohol, in the total volume of solvent. Further, use of such a composition for producing water-resistant objects, such as coatings, films, varnishes, paints, in particular anti-graffiti coatings, seals, in particular sealing joints, personal protective equipment, gloves, flexible masks, condoms, and protective equipment for electronic or computer hardware.

Abstract: A composite including a thermoplastic elastomer and a plant flour. This composite has an increased thermal stability and can be used in a construction material.

Abstract: A copolymer containing polyether (PE) block(s) and polyamide (PE) block(s) issued for the manufacture of a transparent article having high-velocity impact resistance, and impact strength. In said copolymer: PA blocks comprise more than 50 mol % of an equimolar combination of at least one cycloaliphatic diamine and of at least one aliphatic dicarboxylic acid having from 12 to 36 carbon atoms, represent 20 to 90% by weight, out of the total weight of the copolymer, have a number-average molecular weight of 1000 to 10 000 g/mol, and the PE blocks represent 10 to 80% by weight, out of the total weight of the copolymer, and have a number-average molecular weight of 200-1000 g/mol.

Abstract: The present invention relates to a composition comprising from 0.1 to 30% by weight of copolymer comprising polyether blocks and polyamide blocks (PEBA), and from 70 to 99.9% by weight of a medium which is acceptable in the cosmetics industry, in the perfumery industry and/or in the pharmaceutical industry. The present invention also relates in particular to a process for incorporating a copolymer comprising polyether blocks and polyamide blocks into a cosmetic, perfumery and/or pharmaceutical medium. The subject matter of the present invention is also the use of a copolymer comprising polyether blocks and polyamide blocks (PEBA) for producing a cosmetic, pharmaceutical or perfumery product, said PEBA being incorporated in the form of a composition in accordance with the invention.

Abstract: The present invention relates to a thermoplastic powder composition with D50 lower than 100 ?m, including: at least one block copolymer having a inciting temperature lower than 180° C.; 15 to 50 wt % of at least one powdery filler having Mohs hardness lower than 6 and D50 lower than 20 ?m; and 0.1 to 5% of a powdery flow agent with D50 lower than 20 ?m, relative to the total weight of the composition. The present invention relates in particular to the use of said composition in methods for agglomerating powder, layer by layer, by melting or sintering, in order to manufacture flexible three-dimensional objects.

Abstract: The invention relates to a block copolymer derived from at least one ethylene oxide and/or propylene oxide monomer containing 14C. The present invention also relates to a method for preparing such a block copolymer.

Abstract: The present invention relates to a block copolymer derived from at least one tetrahydrofuran monomer containing 14C. The present invention also relates to a method for preparing such a block copolymer.

Abstract: The invention relates to a method for synthesising a block copolymer alloy including at least one rigid polyamide block PA, including the steps of: a) producing said block copolymer; b) adding, during step a) and to at least a portion of said block copolymer, 0.1 to 30 wt % of at least one organic salt in the molten state relative to the total weight of the alloy, so that the alloy thus obtained has improved antistatic properties and identical mechanical properties when compared to the same polymer produced without adding an organic salt. The invention also relates to a block copolymer alloy having improved antistatic properties and obtained by said method, to the use thereof in a polymer matrix, and to a composition containing same.