| abstract |
[PROBLEMS] To provide an adherend such as a liquid crystal cell, a polarizing film, etc. having an appropriate adhesive strength and exhibiting excellent antistatic properties and exhibiting excellent durability under high temperature conditions or high temperature and high humidity conditions. To provide a pressure-sensitive adhesive composition for an optical film that can reduce problems such as the occurrence of light leakage when used for adhesion to the optical film. An acrylic polymer (A) composed of the following monomer components (a1) to (a4) having a specific molecular weight, an ionic compound (B), and a cross-linking agent (C), and having a specific gel fraction. Certain optical film pressure-sensitive adhesive composition monomer component (a1): n-butyl (meth) acrylate 10 to 89.9% by mass Monomer component (a2): Specific (meth) acrylic acid alkyl ester monomer 5 to 50% by mass Monomer component (a3): Monomer having an alkylene oxide group 5 to 40% by mass Monomer component (a4): Monomer containing a hydroxyl group 0.1 to 10% by mass [Selection figure] None |