Surface protection film and method for manufacturing organic light-emitting electronic device

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, and
• wherein the acrylic polymer comprises behenyl methacrylate, which is an alkyl (meth)acrylate monomer having 10 or more carbon atoms as a monomer unit, and has a weight average molecular weight of 10,000 g/mol to 60,000 g/mol, wherein the acrylic polymer is provided in an amount of 1 part by weight of 20 parts by weight, based on 100 parts by weight of the urethane polymer,
• a surface opposite to a surface of the adhesive layer which is provided on the base layer has a residual adhesion rate of 80% or more;
• the acrylic polymer comprises a 2-hydroxyethyl acrylate, which is a (meth)acrylate monomer comprising a hydroxyl group as a monomer unit,
• wherein the acrylic polymer has a hydroxyl group value of 5 mgKOH/g to 40 mgKOH/g,
• wherein the acrylic polymer is a random polymer of 70 wt % to 98 wt % of an alkyl (meth)acrylate monomer having less than 10 carbon atoms;
• 1 wt % to 15 wt % of said alkyl (meth)acrylate having 10 or more carbon atoms;
• and 1 wt % to 15 wt % of said (meth)acrylate monomer including a hydroxyl group, and
• wherein the curing agent is an aliphatic isocyanate trimer.