US 12,358,052 B2
Three-dimensional printing
Tienteh Chen, San Diego, CA (US)
Assigned to Peridot Print LLC, Palo Alto, CA (US)
Appl. No. 17/045,542
Filed by PERIDOT PRINT LLC, Palo Alto, CA (US)
PCT Filed Sep. 18, 2018, PCT No. PCT/US2018/051577
§ 371(c)(1), (2) Date Oct. 6, 2020,
PCT Pub. No. WO2020/060541, PCT Pub. Date Mar. 26, 2020.
Prior Publication US 2021/0197271 A1, Jul. 1, 2021
Int. Cl. B22F 10/14 (2021.01); B22F 10/66 (2021.01); B29C 64/165 (2017.01); B33Y 10/00 (2015.01); B33Y 40/20 (2020.01); B33Y 70/10 (2020.01)
CPC B22F 10/14 (2021.01) [B29C 64/165 (2017.08); B33Y 10/00 (2014.12); B33Y 40/20 (2020.01); B33Y 70/10 (2020.01); B22F 10/66 (2021.01)] 13 Claims
OG exemplary drawing
 
1. A three-dimensional printing kit, comprising:
a particulate build material consisting of uncoated metal particles and up to 0.2 wt % of a flow aid based on a total weight of the particulate build material; and
a binder fluid including:
water;
latex particles in an amount ranging from about 15 wt % to about 40 wt % based on a total weight of the binder fluid, the latex particles being co-polymer particles dispersed in the water with the co-polymer particles having i) a hydrophilic component including carboxylic functional groups and ii) a hydrophobic component; and
a poly(carbodiimide) adhesion promoter in an amount ranging from about 0.05 wt % to about 5 wt % based on the total weight of the binder fluid, wherein the poly(carbodiimide) adhesion promoter is an aqueous dispersion including a water miscible polymer containing multiple carbodiimide functional groups to react with the carboxylic functional groups of the hydrophilic component of the co-polymer particles, wherein the water miscible polymer is present in the aqueous dispersion in an amount ranging from 40% active to about 50% active, based on the total weight of the aqueous dispersion.