Adhesive agent composition, surface protection film, and method of manufacturing organic light-emitting electronic device
The present disclosure relates to an adhesive composition comprising a urethane polymer; an acryl-based polymer; and a curing agent, wherein the acryl-based polymer comprises a (meth)acrylate monomer comprising silicone; and a (meth)acrylate monomer comprising a hydroxyl group as a monomer unit, a surface protective film, and a method for manufacturing an organic light emitting electronic device.
1 . An adhesive composition comprising:
a urethane polymer;
an acryl-based polymer; and
a curing agent,
wherein the acryl-based polymer comprises monomer units derived from a (meth) acrylate monomer comprising silicone; and a (meth) acrylate monomer comprising a hydroxyl group,
wherein the acryl-based polymer comprises a copolymer of:
(i) 70% by weight to 98.9% by weight of an alkyl (meth) acrylate monomer having less than 8 carbon atoms;
(ii) 0.1% by weight to 10% by weight of the (meth) acrylate monomer comprising silicone; and
(iii) 1% by weight to 20% by weight of the (meth) acrylate monomer comprising a hydroxyl group,
wherein the acryl-based polymer is included in an amount of 1 parts by weight to 10 parts by weight with respect to 100 parts by weight of the urethane polymer,
wherein the (meth) acrylate monomer comprising silicone has a number average molecular weight of 500 g/mol to 10,000 g/mol
wherein the urethane polymer has a weight average molecular weight of 60,000 g/mol to 160,000 g/mol, and
wherein the monomer unit derived from the (meth) acrylate monomer comprising silicone is represented by Chemical Formula 3:
wherein, in Chemical Formula 3,
R1 to R7 are the same as or different from each other, and each independently an alkyl group;
R8 is hydrogen or a methyl group;
n is an integer of 0 or greater; and
L is a linear or branched divalent saturated hydrocarbon group; a divalent monocyclic aliphatic saturated hydrocarbon group; a divalent polycyclic saturated hydrocarbon group; a divalent aromatic hydrocarbon group; a divalent group of a ring having cyclic saturated hydrocarbon fused to aromatic hydrocarbon; —O—; —C(═O)—; —C(═O)—O—; —S—; or a group linking two or more of the groups thereof;
wherein the urethane polymer is obtained by curing a urethane composition comprising a polyol and a multifunctional isocyanate compound; wherein the polyol comprises 2 to 6 hydroxyl groups, wherein an equivalence ratio of an isocyanate group to a hydroxyl group (NCO/OH) in the urethane composition is greater than or equal to 0.1 and less than 1, wherein the urethane polymer has a hydroxyl group value of 3 mgKOH/g to 15 mgKOH/g, and wherein the acryl-based polymer has a hydroxyl group value of 5 mgKOH/g to 40 mgKOH/g.
2 . The adhesive composition of claim 1 , wherein the acryl-based polymer has a weight average molecular weight of 10,000 g/mol to 60,000 g/mol.
3 . The adhesive composition of claim 1 , wherein the curing agent is included in an amount of 1 part by weight to 25 parts by weight with respect to 100 parts by weight of the urethane polymer.
4 . An adhesive layer comprising a cured material of the adhesive composition of claim 1 .