	US 12,187,822 B2
	Methods and compositions for photopolymerizable additive manufacturing
Michael Aaron Vaughn, Anderson, SC (US); and Prabhjot Saini, Greenville, SC (US)
Assigned to POLY-MED, INC., Anderson, SC (US)
Appl. No. 17/045,672
Filed by POLY-MED, INC., Anderson, SC (US)
PCT Filed Apr. 5, 2019, PCT No. PCT/US2019/026114 § 371(c)(1), (2) Date Oct. 6, 2020, PCT Pub. No. WO2019/195763, PCT Pub. Date Oct. 10, 2019.
Claims priority of provisional application 62/653,584, filed on Apr. 6, 2018.
Prior Publication US 2021/0155722 A1, May 27, 2021
Int. Cl. C08F 2/50 (2006.01); B29C 64/129 (2017.01); B33Y 10/00 (2015.01); B33Y 70/00 (2020.01); C08F 222/10 (2006.01); C08K 3/32 (2006.01); C08K 5/07 (2006.01); C08K 5/5313 (2006.01); G03F 7/00 (2006.01)

CPC C08F 2/50 (2013.01) [B29C 64/129 (2017.08); B33Y 10/00 (2014.12); B33Y 70/00 (2014.12); C08F 222/102 (2020.02); C08K 3/32 (2013.01); C08K 5/07 (2013.01); C08K 5/5313 (2013.01); G03F 7/0037 (2013.01); C08K 2003/325 (2013.01)]

18 Claims

1. A method for photopolymerization printing an article comprising,

a) exposing for a time with light, a photopolymerizable composition comprising

i. at least one photopolymerizable macromer component;

ii. at least one light reflective material component suspended in the photopolymerizable composition; and

ii. at least one photoinitiator component, wherein the photoinitiator component is in a total concentration of less than 1.0 wt. %;

wherein the light reflective material component modulates a light dose requirement of the photopolymerizable composition when compared to the light dose requirement of the composition without the light reflective material;

and

b) forming a printed article comprising at least polymerized macromers.