CPC B29C 64/165 (2017.08) [B22F 1/0545 (2022.01); B22F 1/105 (2022.01); B22F 3/1021 (2013.01); B22F 10/14 (2021.01); B22F 10/64 (2021.01); B29C 64/209 (2017.08); B29C 64/245 (2017.08); B29C 64/295 (2017.08); B29C 64/371 (2017.08); B33Y 10/00 (2014.12); B33Y 40/20 (2020.01); B33Y 70/10 (2020.01); C08K 3/38 (2013.01); C08L 101/00 (2013.01); B22F 12/13 (2021.01); B22F 12/17 (2021.01); B22F 12/53 (2021.01); B22F 2301/205 (2013.01); B22F 2301/255 (2013.01); B22F 2301/35 (2013.01); B29K 2995/0094 (2013.01); C08K 2003/385 (2013.01)] | 11 Claims |
1. A hardening agent for three-dimensional printing, comprising:
a water dispersible boron-containing hardener selected from the group consisting of boron carbide, boron nitride, a silicon boride, an aluminum boride, an alkali metal boride, an alkaline earth metal boride, a transition metal boride, a lanthanide boride, and combinations thereof, wherein the water dispersible boron-containing hardener present in an amount ranging from about 6 wt % to about 15 wt %, and wherein the water dispersible boron-containing hardener has an average particle size ranging from about 2 nm to about 100 nm; and
a jettable liquid vehicle;
wherein the hardening agent is devoid of a pigment and a dye.
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