US 12,234,390 B2
Debondable compositions
Shengqian Kong, Hillsborough, NJ (US); Yayun Liu, Franklin Park, NJ (US); Wenhua Zhang, Farmington, CT (US); Stephen Hynes, Dublin (IE); John G. Woods, Farmington, CT (US); Jiangbo Ouyang, Wallingford, CT (US); Chunyu Sun, Shanghai (CN); and Bahram Issari, Glastonbury, CT (US)
Assigned to Henkel AG & Co. KGaA, Duesseldorf (DE)
Filed by HENKEL AG & CO. KGAA, Duesseldorf (DE)
Filed on Jun. 5, 2018, as Appl. No. 16/000,193.
Application 16/000,193 is a continuation of application No. PCT/US2016/065713, filed on Dec. 9, 2016.
Claims priority of provisional application 62/265,188, filed on Dec. 9, 2015.
Prior Publication US 2019/0169478 A1, Jun. 6, 2019
Int. Cl. C09J 183/06 (2006.01); B32B 7/12 (2006.01); B32B 37/12 (2006.01); B32B 37/18 (2006.01); B32B 43/00 (2006.01); C09J 5/00 (2006.01); C09J 5/06 (2006.01); C08G 77/12 (2006.01); C08G 77/20 (2006.01); C09J 7/35 (2018.01); C09J 131/00 (2006.01)
CPC C09J 183/06 (2013.01) [B32B 7/12 (2013.01); B32B 37/12 (2013.01); B32B 37/18 (2013.01); B32B 43/006 (2013.01); C09J 5/00 (2013.01); C09J 5/06 (2013.01); B32B 2310/0831 (2013.01); B32B 2457/00 (2013.01); C08G 77/12 (2013.01); C08G 77/20 (2013.01); C09J 7/35 (2018.01); C09J 131/00 (2013.01); C09J 2301/40 (2020.08); C09J 2301/414 (2020.08); C09J 2301/416 (2020.08); C09J 2301/502 (2020.08); C09J 2483/00 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A composition radiation curable to form a pressure sensitive adhesive, comprising:
at least one photoinitiator selected from an acyl phosphine oxide photoinitiator, an alpha-hydroxyl ketone photoinitiator and a phenylglyoxalate photoinitiator; and
a mixture of polysiloxane resins including:
a polysiloxane resin (a) having a vinylsiloxane unit, a molecular weight (Mw) of 2323 to 242352 and a structure represented by:

OG Complex Work Unit Chemistry
a polysiloxane resin (b) having at least two (meth)acrylate groups and a structure selected from at least one of:

OG Complex Work Unit Chemistry
wherein the composition is free of hydridosilane and hydridopolysiloxane; and the weight ratio of polysiloxane resin (a) to polysiloxane resin (b) in the composition is within the range of 97:3 to 40:60 and the vinyl functionality to acrylate functionality in the composition is within the range of 21:1 to 0.29:1; or the weight ratio of polysiloxane resin (a) to polysiloxane resin (b) in the composition is within the range of 99:1 to 90:10 and the vinyl functionality to acrylate functionality in the composition is within the range of 19:1 to 1.4:1.