	US 11,692,070 B2
	Additive manufacturing support material
Andrew Hudson, Pittsburgh, PA (US); Thomas Hinton, Pittsburgh, PA (US); Adam Feinberg, Pittsburgh, PA (US); and Andrew Lee, Pittsburgh, PA (US)
Assigned to Carnegie Mellon University, Pittsburgh, PA (US)
Appl. No. 16/603,158
Filed by Carnegie Mellon University, Pittsburgh, PA (US)
PCT Filed Apr. 5, 2018, PCT No. PCT/US2018/026293 § 371(c)(1), (2) Date Oct. 4, 2019, PCT Pub. No. WO2018/187595, PCT Pub. Date Oct. 11, 2018.
Claims priority of provisional application 62/606,578, filed on Sep. 28, 2017.
Claims priority of provisional application 62/601,949, filed on Apr. 5, 2017.
Prior Publication US 2020/0032004 A1, Jan. 30, 2020
Int. Cl. C08L 1/00 (2006.01); C08L 89/00 (2006.01); C08G 61/04 (2006.01); C08J 3/075 (2006.01); B33Y 70/00 (2020.01); C09D 11/04 (2006.01); B29C 64/40 (2017.01)

CPC C08J 3/075 (2013.01) [B33Y 70/00 (2014.12); C09D 11/04 (2013.01); B29C 64/40 (2017.08); C08J 2389/00 (2013.01); C08J 2389/04 (2013.01)]

22 Claims

1. A support material for additive manufacturing comprising:

a slurry comprising:

a solution; and

coacervate particles in the solution, the coacervate particles being of substantially uniform geometries;

wherein at least a portion of the slurry forms a rigid body when experiencing a stress below a threshold stress;

wherein a value of the threshold stress is based on the substantially uniform geometries of the coacervate particles; and

wherein at least a portion of the slurry forms a viscous fluid when experiencing a stress above the threshold stress.