Adhesive composition for optical films, adhesive layer for optical films, pressure-sensitive adhesive layer-carrying optical film, and image display device

Abstract

A pressure-sensitive adhesive composition for use on an optical film, includes a (meth)acryl-based polymer obtained by copolymerization of 30 to 98.9% by weight of an alkyl(meth)acrylate, 1 to 50% by weight of an aromatic ring-containing polymerizable monomer, and 0.1 to 20% by weight of a hydroxyl group-containing monomer, and a solvent. The (meth)acryl-based polymer is free of any carboxyl group-containing monomer unit and has a weight average molecular weight of 300,000 to 1,200,000 as measured by gel permeation chromatography. The content of a solid including the (meth)acryl-based polymer is 20% by weight or more, and the content of the solvent is 80% by weight or less.

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