US 12,269,933 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 Nov. 1, 2023, as Appl. No. 18/385,951.
Application 18/385,951 is a division of application No. 17/689,253, filed on Mar. 8, 2022, granted, now 11,840,618.
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 2024/0076471 A1, Mar. 7, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. C08F 2/46 (2006.01); B29C 64/135 (2017.01); B33Y 70/10 (2020.01); C08F 2/50 (2006.01); C08G 61/04 (2006.01); C08K 3/36 (2006.01); C08L 33/10 (2006.01); G03F 7/00 (2006.01); G03F 7/004 (2006.01); G03F 7/027 (2006.01); G03F 7/038 (2006.01); B29K 63/00 (2006.01); B29K 105/00 (2006.01); B29K 105/24 (2006.01); B29K 509/02 (2006.01); C08F 222/10 (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)] 16 Claims
 
1. A liquid radiation curable composition for additive fabrication comprising:
(a) a cationically polymerizable aliphatic epoxide component comprising a cycloaliphatic epoxy compound;
(b) a multifunctional (meth) acrylate component;
(c) a cationic photoinitiator;
(d) a free-radical photoinitiator; and
(e) a filled matrix comprising
a nanoparticle constituent comprising a plurality of inorganic nanoparticles, and
a microparticle constituent comprising a plurality of inorganic microparticles comprising spherical microparticles,
wherein the ratio by weight of the microparticle constituent to the nanoparticle constituent is from 1:1 to 12:1, and
wherein component (b) is present in an amount, relative the total weight of the composition, of from 2 wt. % to 10 wt. %.