US 11,891,341 B2
Preceramic 3D-printing monomer and polymer formulations
Zak C. Eckel, Thousand Oaks, CA (US); Andrew P. Nowak, Los Angeles, CA (US); Ashley M. Dustin, Los Angeles, CA (US); April R. Rodriguez, Santa Monica, CA (US); Phuong Bui, Thousand Oaks, CA (US); and Tobias A. Schaedler, Oak Park, CA (US)
Assigned to HRL Laboratories, LLC, Malibu, CA (US)
Filed by HRL Laboratories, LLC, Malibu, CA (US)
Filed on May 30, 2020, as Appl. No. 16/888,724.
Application 16/888,724 is a continuation in part of application No. 15/822,199, filed on Nov. 26, 2017.
Claims priority of provisional application 62/556,388, filed on Sep. 9, 2017.
Claims priority of provisional application 62/428,203, filed on Nov. 30, 2016.
Claims priority of provisional application 62/428,213, filed on Nov. 30, 2016.
Claims priority of provisional application 62/428,207, filed on Nov. 30, 2016.
Prior Publication US 2020/0290931 A1, Sep. 17, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. C04B 35/571 (2006.01); B33Y 70/00 (2020.01); B33Y 80/00 (2015.01); C08G 77/50 (2006.01); B28B 1/00 (2006.01)
CPC C04B 35/571 (2013.01) [B28B 1/001 (2013.01); B33Y 70/00 (2014.12); B33Y 80/00 (2014.12); C08G 77/50 (2013.01); C04B 2235/5252 (2013.01); C04B 2235/665 (2013.01)] 10 Claims
 
1. A preceramic resin formulation for 3D-printing and free-radical or cationic polymerization, said preceramic resin formulation comprising:
(a) a functionalized carbosilane having the chemical structure:

OG Complex Work Unit Chemistry
wherein:
R1 is selected from the group consisting of an allyl group, an ethynyl group a vinyl ether group, a glycidyl group, a glycidyl ether group, a vinyl glycidyl ether group, a vinyl amide group, a vinyl triazine group, a vinyl isocyanurate group, a cyano group, a cyanate group, a thiocyanate group, and combinations thereof;
R2 is selected from the group consisting of an allyl group, an ethynyl group a vinyl ether group, a glycidyl group, a glycidyl ether group, a vinyl glycidyl ether group, a vinyl amide group, a vinyl triazine group, a vinyl isocyanurate group, a cyano group, a cyanate group, and combinations thereof; and
n=2 to 100;
(b) a photoinitiator;
(c) a free-radical inhibitor; and
(d) a 3D-printing resolution agent, wherein said 3D-printing resolution agent is selected for its capability to improve 3D-print quality and resolution by containing curing to a desired region of light exposure laterally and/or vertically in a pre-cured print bath via absorbing said light at a first wavelength and converting energy produced therefrom into thermal energy or radiation at a higher wavelength.