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US 12,180,117 B2Granted
Mineral binder composition for 3D printing
AssigneeSika Technology AG
InventorsGary Boon, Maxime Liard, Didier Lootens, Lolita Hauguel
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Abstract
A dry mineral binder composition includes cement and mineral fillers for the manufacture of molded parts by way of 3D printing. The binder composition additionally contains at least one aluminum sulfate-based accelerator, at least one polycarboxylate ether-based super-plasticizer and at least one rheology additive.
Claims18
A dry mineral binder composition for the production of mouldings by means of 3D printing, the binder composition comprising:
- (i) cement;
- (ii) mineral fillers, including 1 to 10% by weight of ground calcium carbonate having a particle size below 0.01 mm,
- (iii) at least one aluminium-sulfate-based accelerator,
- (iv) at least one superplasticizer based on a polycarboxylate ether, where the polycarboxylate ether has, per gram of dry polycarboxylate ether, at least 1 mmol of carboxylic acid groups,
- (v) at least one rheology aid, and
- (vi) 0.1 to 5% by weight of calcium sulfoaluminate,
- wherein the weight percentages are based on the total weight of the binder composition, wherein the mineral fillers include 20 to 40% by weight, based on the total weight of the binder composition, of fine fillers with a particle size below 0.125 mm.
4 more elements
Dependencies are inferred from the claim text.