| abstract |
[PROBLEMS] To provide a pressure-sensitive adhesive that satisfies the durability that does not cause foaming, peeling, or humid cloudiness to glass and a transparent conductive layer, can suppress display unevenness due to light leakage, and has excellent metal corrosion resistance. To provide a pressure-sensitive adhesive composition for an optical film capable of forming a layer. As monomer units, alkyl (meth) acrylate (a1) is 70% by weight or more, aromatic ring-containing (meth) acrylate (a2) is 3 to 25% by weight, amide group-containing monomer (a3) is 0.1 to 8% by weight. %, Carboxyl group-containing monomer (a4) 0.01 to 2% by weight, and hydroxyl group-containing monomer (a5) 0.01 to 3% by weight, and the weight average molecular weight (Mw) is 1 million to 2.5 million. And the (meth) acrylic polymer (A) satisfying Mw / number average molecular weight (Mn) of 1.8 or more and 10 or less, and the (meth) acrylic polymer (A) as the crosslinking agent (B). The adhesive composition for optical films containing 0.01-3 weight part with respect to 100 weight part. [Selection figure] None |