US 12,275,875 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. 17/295,714
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Jan. 22, 2020, PCT No. PCT/KR2020/001103
§ 371(c)(1), (2) Date May 20, 2021,
PCT Pub. No. WO2020/153753, PCT Pub. Date Jul. 30, 2020.
Claims priority of application No. 10-2019-0010017 (KR), filed on Jan. 25, 2019.
Prior Publication US 2021/0388240 A1, Dec. 16, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C09J 7/38 (2018.01); C09J 4/06 (2006.01); C09J 7/29 (2018.01); H10K 59/12 (2023.01); H10K 59/40 (2023.01); H10K 71/00 (2023.01)
CPC C09J 7/385 (2018.01) [C09J 4/06 (2013.01); C09J 7/29 (2018.01); H10K 59/40 (2023.02); H10K 71/00 (2023.02); C09J 2203/326 (2013.01); C09J 2433/00 (2013.01); C09J 2475/00 (2013.01); H10K 59/1201 (2023.02)] 13 Claims
OG exemplary drawing
 
1. A surface protective film comprising:
a base layer; and
an adhesive layer provided on one 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 comprises a monomer unit derived from an alkyl(meth)acrylate monomer having 10 or more carbon atoms,
wherein a peel strength of the adhesive layer is 2 gf/in or more and 30 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 30 m/min and a peel angle of 180°, and
wherein, in the adhesive composition, the acrylic polymer is comprised in an amount of 1 part by weight to 15 parts by weight based on 100 parts by weight of the urethane polymer.