Thermoplastic polymer powder for 3D printing with improved stability and recyclability
AssigneeArkema France
InventorsOrnella ZOVI, Jean-Charles DURAND
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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.
Claims15
A polymer powder suitable for 3D printing by sintering, comprising a thermoplastic polymer (a), and an aliphatic sulfonate (b) according to formula R—SO3X, or aromatic sulfonate (b) according to formula R—Y—SO3X, wherein
- R represents a linear or branched, saturated or unsaturated aliphatic carbon-based chain having 4 to 30 carbon atoms, which may comprise a group chosen from ester, amide, carboxylic acid, alcohol, nitrile, ketone and/or aldehyde,
- Y represents one or more aromatic rings,
- X represents a monovalent ion chosen from the alkali metals.
Dependencies are inferred from the claim text.