	US 12,319,796 B2
	Thermoplastic polymer composition for constructing 3D articles
Alexis Morfin, Serquigny (FR); and Jean-Charles Durand, Serquigny (FR)
Assigned to ARKEMA FRANCE, Puteaux (FR)
Appl. No. 17/765,725
Filed by Arkema France, Colombes (FR)
PCT Filed Oct. 8, 2020, PCT No. PCT/FR2020/051776 § 371(c)(1), (2) Date Mar. 31, 2022, PCT Pub. No. WO2021/069843, PCT Pub. Date Apr. 15, 2021.
Claims priority of application No. 1911146 (FR), filed on Oct. 8, 2019.
Prior Publication US 2022/0372236 A1, Nov. 24, 2022
Int. Cl. B33Y 10/00 (2015.01); B33Y 70/10 (2020.01); C08J 5/12 (2006.01)

CPC C08J 5/121 (2013.01) [B33Y 10/00 (2014.12); B33Y 70/10 (2020.01); C08J 2300/22 (2013.01); C08J 2491/06 (2013.01)]

19 Claims

1. A composition for the layer-by-layer building of a three-dimensional (3D) article by sintering of the composition brought about by electromagnetic radiation, the composition comprising:

a semicrystalline thermoplastic polymer powder;

a wax, the wax having a dropping point which is greater than the crystallization temperature (Ct) of the semicrystalline thermoplastic polymer; and

wherein the wax is not a fatty acid comprising at least 10 carbon atoms or a metallic soap.