US 11,905,423 B2
Blocked silicone dual cure resins for additive manufacturing
Jessica D. Drazba, Redwood City, CA (US); Kai Chen, Sunnyvale, CA (US); and Jason P. Rolland, San Carlos, CA (US)
Assigned to Carbon, Inc., Redwood City, CA (US)
Filed by Carbon, Inc., Redwood City, CA (US)
Filed on Aug. 24, 2020, as Appl. No. 16/947,914.
Application 16/947,914 is a division of application No. 16/061,205, granted, now 10,787,583, previously published as PCT/US2016/067985, filed on Dec. 21, 2016.
Claims priority of provisional application 62/270,651, filed on Dec. 22, 2015.
Prior Publication US 2020/0377745 A1, Dec. 3, 2020
Int. Cl. C09D 11/101 (2014.01); C09D 11/102 (2014.01); C09D 11/037 (2014.01); C08G 18/10 (2006.01); C08G 18/63 (2006.01); C08G 18/77 (2006.01); B33Y 70/00 (2020.01); G03F 7/075 (2006.01); G03F 7/037 (2006.01); B29C 64/124 (2017.01); G03F 7/027 (2006.01); B29C 64/188 (2017.01); B33Y 40/20 (2020.01); C09D 4/00 (2006.01); B33Y 10/00 (2015.01); B29C 64/135 (2017.01); B29K 75/00 (2006.01); B29K 83/00 (2006.01); B29K 96/04 (2006.01); B29K 105/00 (2006.01); B29C 35/08 (2006.01); B33Y 70/10 (2020.01)
CPC C09D 11/101 (2013.01) [B29C 64/124 (2017.08); B29C 64/188 (2017.08); B33Y 40/20 (2020.01); B33Y 70/00 (2014.12); C08G 18/10 (2013.01); C08G 18/638 (2013.01); C08G 18/778 (2013.01); C09D 4/00 (2013.01); C09D 11/037 (2013.01); C09D 11/102 (2013.01); G03F 7/027 (2013.01); G03F 7/037 (2013.01); G03F 7/0755 (2013.01); G03F 7/0757 (2013.01); B29C 64/135 (2017.08); B29C 2035/0855 (2013.01); B29K 2075/00 (2013.01); B29K 2083/00 (2013.01); B29K 2096/04 (2013.01); B29K 2105/0002 (2013.01); B29K 2105/0085 (2013.01); B33Y 10/00 (2014.12); B33Y 70/10 (2020.01)] 29 Claims
 
1. A polymerizable liquid useful for the production of a three-dimensional object comprised of a silicone polymer or a copolymer thereof by additive manufacturing, said polymerizable liquid comprising a mixture of:
(a) from 5 to 90 percent by weight of a blocked or reactive blocked siloxane-containing prepolymer,
(b) from 5 to 90 percent by weight of a chain extender,
(c) from 0.01 to 4 percent by weight of a photoinitiator,
(d) optionally a polyol and/or a polyamine,
(e) optionally a reactive diluent,
(f) optionally, a light absorbing pigment or dye in an amount of from 0.001 to 10 percent by weight, and
(g) optionally a filler.