US 12,390,992 B2
Additive manufacturing compositions and methods including resin stabilized pigments
Bryan W. Wilkinson, Pittsburgh, PA (US); Daniel M. Connor, Evans City, PA (US); Cynthia Kutchko, Pittsburgh, PA (US); Eric S. Epstein, Pittsburgh, PA (US); Scott J. Moravek, Mars, PA (US); Brian K. Rearick, Allison Park, PA (US); and Brian Chiang, Pittsburgh, PA (US)
Assigned to PPG Industries Ohio, Inc., Cleveland, OH (US)
Appl. No. 18/000,297
Filed by PPG Industries Ohio, Inc., Cleveland, OH (US)
PCT Filed Apr. 5, 2021, PCT No. PCT/US2021/025714
§ 371(c)(1), (2) Date Nov. 30, 2022,
PCT Pub. No. WO2021/247137, PCT Pub. Date Dec. 9, 2021.
Claims priority of provisional application 63/035,229, filed on Jun. 5, 2020.
Prior Publication US 2023/0202103 A1, Jun. 29, 2023
Int. Cl. B29C 64/165 (2017.01); B33Y 10/00 (2015.01); B33Y 70/00 (2020.01); B29K 79/00 (2006.01); B29K 105/00 (2006.01)
CPC B29C 64/165 (2017.08) [B33Y 10/00 (2014.12); B33Y 70/00 (2014.12); B29K 2079/00 (2013.01); B29K 2105/0032 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A reactive additive manufacturing composition, comprising:
a first co-reactive component;
a second co-reactive component reactive with the first co-reactive component;
a pigment composition comprising resin-stabilized pigment particles; and
the additive manufacturing composition including less than 5 wt. % total solvents, based on a total weight of the additive manufacturing composition;
wherein the pigment particles are at least partially coated and stabilized with a resin comprising an aldehyde resin, an acrylic resin, a ketone resin, or a combination thereof.