US 11,904,031 B2
Orthodontic articles comprising polymerized composition comprising at least two free-radical initiators
Saswata Chakraborty, Cottage Grove, MN (US); Benjamin C. MacMurray, St. Paul, MN (US); Eric W. Nelson, Stillwater, MN (US); Thomas P. Klun, Lakeland, MN (US); Richard J. Pokorny, Maplewood, MN (US); Wayne S. Mahoney, St. Paul, MN (US); Chad M. Amb, Roberts, WI (US); George W. Griesgraber, Eagan, MN (US); Dana R. Reed, Minneapolis, MN (US); Ahmed S. Abuelyaman, Woodbury, MN (US); Robert S. Clough, St. Paul, MN (US); James D. Hansen, White Bear Lake, MN (US); Daniel J. Skamser, Ham Lake, MN (US); Ian Dailey, Maplewood, MN (US); and John M. Riedesel, San Jose, CA (US)
Assigned to 3M Innovative Properties Company, St. Paul, MN (US)
Appl. No. 16/754,186
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
PCT Filed Nov. 20, 2018, PCT No. PCT/US2018/062085
§ 371(c)(1), (2) Date Apr. 7, 2020,
PCT Pub. No. WO2019/104079, PCT Pub. Date May 31, 2019.
Claims priority of provisional application 62/736,027, filed on Sep. 25, 2018.
Claims priority of provisional application 62/736,031, filed on Sep. 25, 2018.
Claims priority of provisional application 62/692,456, filed on Jun. 29, 2018.
Claims priority of provisional application 62/692,466, filed on Jun. 29, 2018.
Claims priority of provisional application 62/643,431, filed on Mar. 15, 2018.
Claims priority of provisional application 62/589,707, filed on Nov. 22, 2017.
Prior Publication US 2021/0186820 A1, Jun. 24, 2021
Int. Cl. A61K 6/62 (2020.01); A61C 7/08 (2006.01); A61C 7/00 (2006.01); A61K 6/893 (2020.01); C08L 75/14 (2006.01); B33Y 70/00 (2020.01); B33Y 80/00 (2015.01); B33Y 10/00 (2015.01); B29C 64/124 (2017.01)
CPC A61K 6/62 (2020.01) [A61C 7/002 (2013.01); A61C 7/08 (2013.01); A61K 6/893 (2020.01); B29C 64/124 (2017.08); B33Y 10/00 (2014.12); B33Y 70/00 (2014.12); B33Y 80/00 (2014.12); C08L 75/14 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An orthodontic article comprising a cured composition comprising
a free-radically polymerizable resin comprising a urethane (meth)acrylate comprising polymerized units derived from a diol selected from polycarbonate diol or polyester diol;
a first free-radical photoinitiator having sufficient absorbance at a first wavelength range; and
a second free-radical initiator selected from a second photoinitiator having sufficient absorbance at a second wavelength range, wherein the second wavelength range is different than the first wavelength range, or a thermal free-radical initiator.