	US 12,473,469 B2
	Foldable adhesive film and fabrication method therefor
Hyon Gyu Park, Daejeon (KR); Hyun Cheol Kim, Daejeon (KR); Hee Song, Daejeon (KR); and Seung Yeon Ryu, Daejeon (KR)
Assigned to XINMEI FONTANA HOLDING (HONG KONG) LIMITED, Hong Kong (CN)
Appl. No. 17/634,281
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Dec. 3, 2020, PCT No. PCT/KR2020/017545 § 371(c)(1), (2) Date Feb. 10, 2022, PCT Pub. No. WO2021/112588, PCT Pub. Date Jun. 10, 2021.
Claims priority of application No. 10-2019-0158956 (KR), filed on Dec. 3, 2019; and application No. 10-2019-0158957 (KR), filed on Dec. 3, 2019.
Prior Publication US 2022/0332988 A1, Oct. 20, 2022
Int. Cl. C09J 7/10 (2018.01); C08F 220/18 (2006.01); C09J 11/08 (2006.01); C09J 133/10 (2006.01)

CPC C09J 133/10 (2013.01) [C08F 220/1808 (2020.02); C09J 7/10 (2018.01); C09J 11/08 (2013.01); C09J 2301/312 (2020.08); Y10T 428/2891 (2015.01)]

9 Claims

1. A foldable adhesive film comprising:

an adhesive layer comprising a cured product of an adhesive composition; and a substrate provided on one surface of the adhesive layer,

wherein the adhesive composition comprises: a copolymer of a mixture containing a (meth)acrylate containing at least one alkyl group having 2 to 10 carbon atoms, a (meth)acrylate containing a polar group, and a free volume-increasing agent; and a crosslinking agent, and

wherein the content of the crosslinking agent is 0.3 to 0.6 equivalent relative to the mixture and

wherein the cured product has a glass transition temperature of −80° C. to −20° C.