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US 2018/0202076 A1Published application
Filaments based on a coated core material
AssigneeBASF SE
InventorsPaul VAN DER SCHAAF, Bruno INDERBITZIN, Marie-Claire HERMANT, Martina SCHÖMER
Life of this patent
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Abstract
The invention relates to a filament comprising a core material (CM) comprising an inorganic powder (IP) and the core material (CM) is coated with a layer of shell material (SM) comprising a thermoplastic polymer. Further, the invention relates to a process for the preparation of said filament, as well as to three-dimensional objects and a process for the preparation thereof.
Claims16
-14. (canceled)
A filament comprising a core material (CM) coated with a layer of shell material (SM), wherein
- the core material (CM) comprises the components a) to c)
- a) 30 to 80% by volume, based on the total volume of the core material (CM) of at least one inorganic powder (IP),
- b) 20 to 70% by volume, based on the total volume of the core material (CM) of at least one binder (B) comprising component b1)
- b1) at least one polymer (P)
- c) 0 to 20% by volume, based on the total volume of the core material (CM) of at least one additive (A),
- wherein the at least one polymer (P) is a polyoxymethylene (POM) homopolymer, a polyoxymethylene (POM) copolymer or polyoxymethylene (POM) terpolymer and wherein at least some of the OH-end groups of the polyoxymethylene (POM) homopolymer are capped,
- and the shell material (SM) comprises the components d) to f)
- d) 75 to 100% by volume, based on the total volume of the shell material (SM) of at least one thermoplastic polymer (TP)
- e) 0 to 20% by volume, based on the total volume of the shell material (SM) of the at least one inorganic powder (IP),
- f) 0 to 25% by volume, based on the total weight of the shell material (SM) of the at least one additive (A), wherein the thickness of the layer of shell material is 0.05 to 0.5 mm.
7 more elements
Dependencies are inferred from the claim text.