US 12,258,487 B2
Dual cure composition
Peng-Fei Fu, Midland, MI (US); and Yanhu Wei, Midland, MI (US)
Assigned to Dow Silicones Corporation, Midland, MI (US)
Appl. No. 17/774,941
Filed by Dow Silicones Corporation, Midland, MI (US)
PCT Filed Jan. 5, 2021, PCT No. PCT/US2021/012136
§ 371(c)(1), (2) Date May 6, 2022,
PCT Pub. No. WO2021/150364, PCT Pub. Date Jul. 29, 2021.
Claims priority of provisional application 62/964,249, filed on Jan. 22, 2020.
Prior Publication US 2022/0396669 A1, Dec. 15, 2022
Int. Cl. C09D 183/06 (2006.01); C08G 77/16 (2006.01); C08G 77/18 (2006.01); C08K 5/00 (2006.01); C08L 83/06 (2006.01); C09J 183/04 (2006.01); C09J 183/06 (2006.01)
CPC C09D 183/06 (2013.01) [C08G 77/16 (2013.01); C08G 77/18 (2013.01); C08K 5/0025 (2013.01); C08L 83/06 (2013.01); C09J 183/04 (2013.01); C09J 183/06 (2013.01)] 10 Claims
 
1. A composition comprising:
(a) a polysiloxane resin, wherein the polysiloxane resin comprises the following siloxane units: [R3SiO1/2], [(OZ)qSiO(4-q)/2] and at least one of [(OZ)tREPSiO(3-t)/2] and [(OZ)dRREPSiO(2-d)/2]; where: each R is independently in each occurrence selected from hydrocarbyls, REP is an epoxy functional hydrocarbyl group, subscript q is in each occurrence a number selected from a range of 0-3, subscript t is in each occurrence a number selected from a range of 0-2, and subscript d is in each occurrence a number selected from a range of 0-1 provided that the average concentration of OZ groups is at least 15 mole-percent relative to moles of silicon atoms in the polysiloxane resin;
(b) a photo acid generator;
(c) a moisture cure catalyst; and
(d) optionally, an epoxy functional diluent;
where, OZ is independently in each occurrence a hydroxyl or alkoxy group.