SURFACE ADDITIVE FOR THREE-DIMENSIONAL POLYMERIC PRINTING POWDERS

A composition including a three-dimensional polymeric printing powder; an organic polymeric additive on at least a portion of an external surface of the three-dimensional polymeric printing powder; wherein the organic polymeric additive is optionally cross-linked; and optionally, an inorganic additi...

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Bibliographische Detailangaben
Hauptverfasser:	VEREGIN, RICHARD P.N, HU, NAN-XING, MOFFAT, KAREN A, HAWKINS, MICHAEL STEVEN
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADDITIVE MANUFACTURING TECHNOLOGY ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	A composition including a three-dimensional polymeric printing powder; an organic polymeric additive on at least a portion of an external surface of the three-dimensional polymeric printing powder; wherein the organic polymeric additive is optionally cross-linked; and optionally, an inorganic additive on at least a portion of an external surface of the three-dimensional polymeric printing powder. A process for preparing a three-dimensional polymeric printing powder having an organic polymeric additive disposed thereon. A process for employing the three-dimensional polymeric printing powder including selective laser sintering. Une composition comprend une poudre polymère dimpression tridimensionnelle, un additif polymère organique sur au moins une partie dune surface externe de la poudre polymère dimpression tridimensionnelle, ladditif polymère organique étant facultativement réticulé, et, facultativement, un additif inorganique sur au moins une partie dune surface externe de la poudre polymère dimpression tridimensionnelle. Un procédé de préparation de ladite poudre polymère dimpression tridimensionnelle recouverte dun additif polymère organique est aussi décrit. Un procédé dutilisation de la poudre polymère dimpression tridimensionnelle, y compris le frittage laser, est présenté.