Abstract: The present invention relates to a polymer powder for the manufacture of articles by 3D printing, particularly by sintering, comprising a thermoplastic polymer and a particular antioxidant having improved stability and recyclability. The invention also relates to a process for preparing this powder and to the use thereof in a process for manufacturing by sintering, and to the articles manufactured from said powder.

Abstract: A polyamide powder for use in a process of powder agglomeration by sintering, including at least one chain limiting agent. A process for preparing a powder including at least one chain limiting agent, wherein the chain limiter is mixed with the polyamide powder, and if need be at least one thioether antioxidant, by dry blending.

Abstract: The present invention relates to a reinforced thermoplastic powder composition, comprising: at least one polyamide powder with a d50 of less than 100 ?m, from 5% to 70% by weight of at least one glass fiber: with a l50 within the range from 50 to 200 ?m, with an lmax of less than 450 ?m, with a d50 within the range from 4 to 40 ?m, with a form factor F: l50/d50 of between 5 and 15, and from 0.05% to 5% of a pulverulent flow agent with a d50 of less than 20 ?m; with regard to the total weight of the composition. The present invention relates in particular to the use of said composition in 3D printing processes for manufacturing reinforced three-dimensional objects.

Abstract: The present invention relates to a self-adhesive powder composition comprising: at least one polyamide; at least one ethylene vinyl alcohol copolymer; at least one hydrophobic agent; and optionally at least one filler.

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: A powder intended for 3D printing, based on thermoplastic polymer, wherein it contains at least 0.1% by weight of at least one thioether antioxidant relative to the total weight of powder. Also, a process for stabilizing the color of a powder based on polymer in a 3D printing process, in which at least 0.1% by weight of at least one thioether antioxidant is incorporated relative to the total weight of powder.

Abstract: The present invention relates to a reinforced thermoplastic powder composition, comprising: at least one polyamide powder with a d50 of less than 100 ?m, from 5% to 70% by weight of at least one glass fiber: with a 150 within the range from 50 to 200 ?m, with an lmax of less than 450 ?m, with a d50 within the range from 4 to 40 ?m, with a form factor F: 150/d50 of between 5 and 15, and from 0.05% to 5% of a pulverulent flow agent with a d50 of less than 20 ?m; with regard to the total weight of the composition. The present invention relates in particular to the use of said composition in 3D printing processes for manufacturing reinforced three-dimensional objects.

Abstract: A process for synthesizing a product of formula Br—(CH2)n—R by hydrobromination, by reacting: a reagent of formula (I) R1-CH?CH—R2 in which R1 and R2, identical or different, are chosen from H or an alkyl radical comprising 1 to 30 carbon atoms, which is saturated or unsaturated, linear or branched, functionalized or non-functionalized, with a molar excess of HBr relative to the reagent of formula (I), in the presence of a radical initiator, and optionally in the presence of at least one solvent, said process including a step A of mixing at least reagent I and the HBr, each of the latter arriving in the form of a flow of liquid into a mixing device dA.

Abstract: The present invention relates to a self-adhesive powder composition comprising: at least one polyamide; at least one ethylene vinyl alcohol copolymer; at least one hydrophobic agent; and optionally at least one filler.

Abstract: A process for synthesizing a product of formula Br—(CH2)n—R by hydrobromination, by reacting: a reagent of formula (I) R1-CH?CH—R2 in which R1 and R2, identical or different, are chosen from H or an alkyl radical comprising 1 to 30 carbon atoms, which is saturated or unsaturated, linear or branched, functionalized or non-functionalized, with a molar excess of HBr relative to the reagent of formula (I), in the presence of a radical initiator, and optionally in the presence of at least one solvent, said process including a step A of mixing at least reagent I and the HBr, each of the latter arriving in the form of a flow of liquid into a mixing device dA.