US 11,858,208 B2
Three-dimensional printing
Garry D. Hinch, Vancouver, WA (US); James W. Stasiak, Lebanon, OR (US); and Timothy L Weber, Albany, OR (US)
Assigned to Hewlett-Packard Development Company, L.P., Spring, TX (US)
Filed by Hewlett-Packard Development Company, L.P., Spring, TX (US)
Filed on Jun. 24, 2020, as Appl. No. 16/911,137.
Application 16/911,137 is a continuation in part of application No. PCT/US2019/029538, filed on Apr. 27, 2019.
Prior Publication US 2020/0338819 A1, Oct. 29, 2020
Int. Cl. B33Y 70/10 (2020.01); C08K 3/38 (2006.01); C08L 101/00 (2006.01); B29C 64/165 (2017.01); B29C 64/295 (2017.01); B29C 64/209 (2017.01); B29C 64/245 (2017.01); B29C 64/371 (2017.01); B33Y 10/00 (2015.01); B33Y 40/20 (2020.01); B22F 10/14 (2021.01); B22F 3/10 (2006.01); B22F 10/64 (2021.01); B22F 1/0545 (2022.01); B22F 1/105 (2022.01); B22F 12/13 (2021.01); B22F 12/17 (2021.01); B22F 12/53 (2021.01)
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
OG exemplary drawing
 
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.