US 12,351,660 B2
Low viscosity photo-curable resins for the direct fabrication of orthodontic appliances
Blaine Carter, San Jose, CA (US); Jennifer Chavez, Fremont, CA (US); Lance Robert Pickens, Campbell, CA (US); Michael Christopher Cole, San Jose, CA (US); Peter Dorfinger, Los Altos Hills, CA (US); and Yan Chen, Cupertino, CA (US)
Assigned to Align Technology, Inc., San Jose, CA (US)
Filed by Align Technology, Inc., San Jose, CA (US)
Filed on Dec. 5, 2023, as Appl. No. 18/529,570.
Application 18/529,570 is a continuation of application No. 17/190,308, filed on Mar. 2, 2021, granted, now 11,851,510.
Claims priority of provisional application 62/984,075, filed on Mar. 2, 2020.
Prior Publication US 2024/0218085 A1, Jul. 4, 2024
Int. Cl. C08F 2/50 (2006.01); A61L 27/14 (2006.01); A61L 27/16 (2006.01); C08F 20/34 (2006.01); C08K 5/14 (2006.01)
CPC C08F 2/50 (2013.01) [A61L 27/14 (2013.01); A61L 27/16 (2013.01); C08F 20/34 (2013.01); C08K 5/14 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A method of forming an object comprising a polymeric material by additive manufacturing, the method comprising:
providing a photo-curable resin, the photo-curable resin comprising:
an oligomer having a number-average molecular weight of greater than 3,000 Da; and
an initiator,
wherein the photo-curable resin comprises less than 8 wt % hydrogen bonding units and has a viscosity less than or equal to 15,000 cP at 25° C.;
curing the photo-curable resin, thereby forming the polymeric material; and
fabricating the object with the polymeric material.