ADHESIVE COMPOSITION FOR POLARIZING PLATE, ADHESIVE FILM FOR POLARIZING PLATE PREPARED USING THE SAME, POLARIZING PLATE COMPRISING THE SAME AND OPTICAL DISPLAY COMPRISING THE SAME

摘要

The present invention relates to an adhesive composition for polarizing plates, an adhesive film for polarizing plates prepared using the same, a polarizing plate including the same and an optical display device including the same, wherein the adhesive composition comprises: a (meth)acrylic copolymer, an isocyanate crosslinking agent, and a silane coupling agent, wherein the molar ratio (A) of the hydroxyl group in the (meth)acrylic copolymer is 2.5 to 4 mol%; the molar ratio (B) of the alkoxysilane group of the silane coupling agent to the total molar sum of the alkoxysilane group of the silane coupling agent and the isocyanate group of the isocyanate crosslinking agent is 50 to 80 mol%; and the molar ratio (C) of the isocyanate group in the isocyanate crosslinking agent is 20 to 50 mol%.