US 12,134,702 B2
Compositions and methods for extrusion-based 3D printing of soft materials
Kyungsuk Yum, Fort Worth, TX (US); Amirali Nojoomi, Arlington, TX (US); and Hakan Arslan, Arlington, TX (US)
Assigned to Board of Regents, The University of Texas System, Austin, TX (US)
Filed by Board of Regents, The University of Texas System, Austin, TX (US)
Filed on Sep. 11, 2020, as Appl. No. 17/017,907.
Claims priority of provisional application 62/898,951, filed on Sep. 11, 2019.
Prior Publication US 2021/0071018 A1, Mar. 11, 2021
Int. Cl. B29C 64/129 (2017.01); A61L 27/38 (2006.01); B33Y 10/00 (2015.01); B33Y 70/00 (2020.01); C09D 11/101 (2014.01); C09D 11/102 (2014.01); B29K 105/00 (2006.01)
CPC C09D 11/102 (2013.01) [A61L 27/38 (2013.01); B29C 64/129 (2017.08); B33Y 10/00 (2014.12); B33Y 70/00 (2014.12); C09D 11/101 (2013.01); A61L 2430/30 (2013.01); B29K 2105/0002 (2013.01); B29K 2105/0061 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A gel-phase ink, wherein the gel-phase ink comprises a precursor solution and a fugitive carrier, wherein the precursor solution comprises (i) one or more crosslinkable monomers, one or more crosslinkable polymers, or a combination thereof, and (ii) optionally at least one crosslinker, one or more non-crosslinkable polymers, or a combination thereof, and wherein the fugitive carrier comprises a poloxamer in the amount of greater than 20 wt % to about 50 wt % of the gel-phase ink, wherein the fugitive carrier is a single poloxamer having the formula
HO(C2H4O)b(C3H6O)a(C2H4O)bOH
wherein a is from 50 to 70 and each b is from 50 to 150.