US 11,840,618 B2
Stabilized matrix-filled liquid radiation curable resin compositions for additive fabrication
Mingbo He, Elgin, IL (US); and Beth Rundlett, Elgin, IL (US)
Assigned to STRATASYS, INC., Eden Prairie, MN (US)
Filed by STRATASYS INC., Eden Prairie, MN (US)
Filed on Mar. 8, 2022, as Appl. No. 17/689,253.
Application 16/689,257 is a division of application No. 15/917,928, filed on Mar. 12, 2018, granted, now 10,526,469, issued on Jan. 7, 2020.
Application 17/689,253 is a continuation of application No. 17/174,576, filed on Feb. 12, 2021, abandoned.
Application 17/174,576 is a continuation of application No. 16/689,257, filed on Nov. 20, 2019, abandoned.
Application 15/917,928 is a continuation of application No. 14/951,743, filed on Nov. 25, 2015, granted, now 9,951,198, issued on Apr. 24, 2018.
Application 14/951,743 is a continuation of application No. 14/533,238, filed on Nov. 5, 2014, granted, now 9,228,073, issued on Jan. 5, 2016.
Claims priority of provisional application 62/074,735, filed on Nov. 4, 2014.
Claims priority of provisional application 61/900,044, filed on Nov. 5, 2013.
Prior Publication US 2022/0185987 A1, Jun. 16, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C08F 2/46 (2006.01); C08F 2/50 (2006.01); C08G 61/04 (2006.01); C08K 3/36 (2006.01); G03F 7/00 (2006.01); G03F 7/004 (2006.01); G03F 7/038 (2006.01); G03F 7/027 (2006.01); B29C 64/135 (2017.01); B33Y 70/10 (2020.01); C08L 33/10 (2006.01); C08F 222/10 (2006.01); B29K 63/00 (2006.01); B29K 105/00 (2006.01); B29K 105/24 (2006.01); B29K 509/02 (2006.01)
CPC C08K 3/36 (2013.01) [B29C 64/135 (2017.08); B33Y 70/10 (2020.01); C08F 2/50 (2013.01); C08L 33/10 (2013.01); G03F 7/0037 (2013.01); G03F 7/0045 (2013.01); G03F 7/0047 (2013.01); G03F 7/027 (2013.01); G03F 7/038 (2013.01); B29K 2063/00 (2013.01); B29K 2105/0088 (2013.01); B29K 2105/246 (2013.01); B29K 2509/02 (2013.01); C08F 222/103 (2020.02); C08F 222/106 (2020.02); C08K 2201/011 (2013.01); Y10T 428/31511 (2015.04)] 18 Claims
 
1. A liquid radiation curable composition for additive fabrication comprising:
a cationically polymerizable component;
a multifunctional (meth)acrylate component;
a cationic photoinitiator;
a free-radical photoinitiator; and
a filled matrix, the filled matrix comprising
a microparticle constituent comprising inorganic microparticles having a particle size from about 1 to about 10 microns, and
a nanoparticle constituent comprising inorganic nanoparticles having a particle size from about 20 to about 200 nm,
wherein a ratio of the average particle size of the microparticle constituent to the average particle size of the nanoparticle constituent is from about 2.41:1 to less than 200:1, and
wherein a ratio by weight of the microparticle constituent to the nanoparticle constituent is from about 1:1 to about 12:1.