| 摘要 |
<p>PURPOSE: An adhesive composition for optical film and an adhesive type optical film are provided to improve durability under high temperature or high temperature and humidity. CONSTITUTION: An adhesive composition for optical film comprises acryl-based polymer, ionic compound, and cross-linking agent. After crosslinking gel fraction is more than 60%. The acryl based polymer has average molecular weight of 1,000,000 or greater. The acryl based polymer comprises 10-89.9 mass% of n-butyl(meth)acrylate, 5-50 mass% of (meth) acrylic acid alkyl ester monomer which is represented by chemical formula(I), 5-40 mass% of monomer which has alkylene oxide group, and 0.1-10 mass% of monomer containing the hydroxyl group.</p> |
