US 12,441,918 B2
Adhesive composition, and polarizing plate and display device manufactured using same
Kee Young Kim, Daejeon (KR); Min Ki Lee, Daejeon (KR); and Dong Jo Ryu, Daejeon (KR)
Assigned to LG Chem, Ltd., Seoul (KR)
Appl. No. 17/607,220
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Sep. 22, 2020, PCT No. PCT/KR2020/012757
§ 371(c)(1), (2) Date Oct. 28, 2021,
PCT Pub. No. WO2021/060796, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 10-2019-0120029 (KR), filed on Sep. 27, 2019.
Prior Publication US 2022/0220348 A1, Jul. 14, 2022
Int. Cl. C09J 133/08 (2006.01); C08K 5/00 (2006.01); C08K 5/07 (2006.01); C08K 5/092 (2006.01); C08K 5/29 (2006.01); C08K 5/33 (2006.01); C08K 5/3412 (2006.01); C08K 5/37 (2006.01); C08K 5/54 (2006.01); C09J 133/06 (2006.01); G02B 5/30 (2006.01)
CPC C09J 133/066 (2013.01) [C08K 5/0025 (2013.01); C08K 5/07 (2013.01); C08K 5/092 (2013.01); C08K 5/29 (2013.01); C08K 5/33 (2013.01); C08K 5/3412 (2013.01); C08K 5/37 (2013.01); C08K 5/54 (2013.01); C09J 133/08 (2013.01); G02B 5/30 (2013.01); G02B 5/3033 (2013.01); C09J 2203/318 (2013.01); C09J 2301/124 (2020.08); C09J 2301/408 (2020.08); C09J 2433/00 (2013.01)] 13 Claims
 
1. An acrylic adhesive composition comprising:
an acrylic copolymer formed by polymerizing a monomer mixture including a (meth)acrylic monomer and a (meth)acrylic monomer containing a hydroxy group;
an isocyanate-based multi-functional curing agent;
a curing retarder comprising at least two kinds of curing retarders having different deblocking temperatures; and
a silane coupling agent,
wherein the curing retarder comprises a first curing retarder having a deblocking temperature of 110° C. or lower and a second curing retarder having a deblocking temperature of 130° C. or higher, and
the first curing retarder and the second curing retarder are included in a weight ratio of 1:1 to 5:1, and
wherein the acrylic adhesive composition does not comprise a peroxide.