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US 12,365,798 B2Granted
Thermoplastic composition for 3D printing
AssigneeHenkel AG & Co. KGaA
InventorsLuca Mario Marchese, Fabio Angelo Spada, Joerg Uebele
Life of this patent
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Abstract
The present invention relates to a thermoplastic composition comprising an amorphous polyamide polymer for use in 3D printing, the respective use and methods for forming objects by 3D printing using the thermoplastic compositions described herein.
Claims15
A method for 3D-printing an object, comprising:
- providing a thermoplastic 3D printing composition consisting of:
- (a) at least 25 wt. %, relative to the total weight of the composition, of an amorphous polyamide polymer, the polyamide polymer being a reaction product of:
- a1) at least one dimerized fatty acid;
- a2) optionally at least one mono carboxylic acid;
- a3) optionally at least one linear dicarboxylic acid;
- and
- a4) at least one linear diamine;
- (b) at least 5 wt. %, relative to the total weight of the composition, of a crystalline or semicrystalline thermoplastic polymer selected from polypropylene (PP), ethylvinylacetate (EVA), polyacrylate, polyamide different from (a), and combinations thereof;
- (c) optionally at least 0.1 wt. %, relative to the total weight of the composition, of a compatibilizing agent;
- and
- (d) optionally at least 1 wt. %, relative to the total weight of the composition, of a filler;
- providing a 3D printer;
- disposing the thermoplastic composition in the printer;
- melting the thermoplastic composition in the printer;
- and
- printing the melted thermoplastic composition to form an object.
13 more elements
A method for 3D-printing an object, comprising:
- providing a 3D printer having a feed material inlet, at least one heating zone fluidly connected to the feed material inlet, and a nozzle fluidly connected to the at least one heating zone;
- providing a feed material in the form of a filament or granules, the feed material being a thermoplastic 3D printing composition comprising:
- (a) between 45 wt. % and 60 wt. %, relative to the total weight of the composition, of an amorphous polyamide polymer, the polyamide polymer being a reaction product of:
- a1) at least one dimerized fatty acid;
- a2) optionally at least one mono carboxylic acid;
- a3) optionally at least one linear dicarboxylic acid;
- a4) at least one linear diamine;
- and
- (b) between 30 wt. % and 40 wt. %, relative to the total weight of the composition, of a crystalline or semicrystalline thermoplastic polymer selected from polypropylene (PP) or ethylvinylacetate;
- disposing the feed material through the feed material inlet and into the at least one heating zone;
- heating the feed material in the heating zone to a molten state;
- disposing the molten feed material under pressure into the nozzle;
- defining an extrusion path on a substrate;
- and
- printing molten feed material from the nozzle onto the substrate along the extrusion path.
12 more elements
Dependencies are inferred from the claim text.