US 12,279,479 B2
Surface protection film and method for manufacturing organic light-emitting electronic device
Jeong Min Choi, Daejeon (KR); Hyun Cheol Kim, Daejeon (KR); Sojin Kim, Daejeon (KR); Hyungoo Kang, Daejeon (KR); and Jae Seung Lim, Daejeon (KR)
Assigned to LG CHEM, LTD., Seoul (KR)
Appl. No. 17/295,386
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Jan. 22, 2020, PCT No. PCT/KR2020/001106
§ 371(c)(1), (2) Date May 19, 2021,
PCT Pub. No. WO2020/153754, PCT Pub. Date Jul. 30, 2020.
Claims priority of application No. 10-2019-0010015 (KR), filed on Jan. 25, 2019.
Prior Publication US 2022/0013747 A1, Jan. 13, 2022
Int. Cl. H10K 59/12 (2023.01); H10K 50/842 (2023.01); H10K 50/844 (2023.01); H10K 59/40 (2023.01); H10K 59/80 (2023.01); H10K 71/00 (2023.01)
CPC H10K 59/1201 (2023.02) [H10K 50/8426 (2023.02); H10K 50/844 (2023.02); H10K 59/12 (2023.02); H10K 59/40 (2023.02); H10K 59/8722 (2023.02); H10K 59/873 (2023.02); H10K 71/00 (2023.02)] 8 Claims
OG exemplary drawing
 
1. A surface protective film comprising:
a base layer; and
an adhesive layer provided on a surface of the base layer,
wherein the adhesive layer comprises a cured product of an adhesive composition comprising: a urethane polymer; an acrylic polymer; and a curing agent,
wherein the acrylic polymer consists of an alkyl(meth)acrylate monomer having 10 or more carbon atoms; an alkyl(meth)acrylate monomer having less than 10 carbon atoms; and a (meth)acrylate monomer comprising a hydroxyl group, each as a monomer unit,
wherein the alkyl(meth)acrylate monomer having 10 or more carbon atoms is comprised in an amount of 1 wt % to 20 wt % based on a total amount of the monomer units comprised in the acrylic polymer,
wherein the (meth)acrylate monomer comprising the hydroxyl group is comprised in an amount of 1 wt % to 20 wt % based on a total amount of the monomer units comprised in the acrylic polymer, and
wherein a peel strength of the adhesive layer is 0.5 gf/in or more and 10 gf/in or less when a surface of the adhesive layer, opposite to a surface on which the base layer is provided, is peeled off from glass at a peel speed of 1.8 m/min and a peel angle of 180°.