Stratasys, Inc.

Covestro (netherlands) B.v.

Dsm IP Assets B.v.

Wilhelmus Frederikus Zoetelief

Alexander Antonius Marie Stroeks

Katarina Tomic

Patrick Gerardus Duis

Adrianus Antonius Johannes Van Geel

Robbert Van Sluijs

Rudolfus Antonius Theodorus Maria Van Benthem

Danielle Glasbergen-Benning

Adhesive compositions comprising an aqueous dispersion of an acrylic polymer are disclosed, with such compositions having particular applicability in additive manufacturing processes, such as three-dimensional (3D) printing, including Fused Filament Fabrication (FFF). In particular, the compositions address drawbacks associated with an improper degree of adhesion between a thermoplastic build material and build plate, which decrease the quality of printed objects. In representative aqueous dispersions, the solids content of at least about 5 wt. % and also most about 95 wt. % of the acrylic polymer is solubilized, with the balance of this polymer comprising dispersed solid particles.

Adhesive compositions and their use in 3D printing

The invention relates to a method for forming a three-dimensional object by fused filament fabrication comprising the step of selectively dispensing a polymer composition containing a semi-crystalline copolyamide in accordance with the shape of a portion of a three-dimensional object, characterized that the semi-crystalline copolyamide comprises: a) At least 70 wt. % of aliphatic monomeric units derived from i. Aminoacid A, or ii. diamine B and diacid C, and b) At least 0.5 wt. % of further monomeric units derived from a cyclic monomer, wherein wt. % is with respect to the total weight of the semi-crystalline copolyamide. The invention relates also relates to objects attainable by this method and to the use of the said semi-crystalline copolyamide in fused filament fabrication.

Fused filament printing

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Echt, Netherlands

Wilhelmus Frederikus Zoetelief