Patent ID: 7960476
Filing Date: 2011-06-14
Classification: B32B,G02F,Y10T

Abstract:
1. An optical laminated film laminating an adhesive layer containing an adhesive on both surfaces or one surface of an optical film that is a polarizing film and/or phase retardation film; wherein the adhesive comprises an acrylic resin composition and a cross-linking agent and/or silane-based compound; wherein said acrylic resin composition comprises the following acrylic resins (1) and (2): acrylic resin (1): an acrylic resin containing a structural unit derived from a monomer (a) (structural unit (a)) and a structural unit derived from a monomer (b) (structural unit (b)): acrylic resin (2): an acrylic resin having a molecular weight of 1,100,000 to 1,500,000, and containing the structural unit (a) as the main component and a structural unit derived from a monomer (c) (structural unit (c)) and substantially not containing the structural unit (b); (a): a (meth)acrylate of the formula (A) (wherein, R (b): a monomer containing an olefinic double bond in the molecule and at least one 5- or more-membered heterocyclic group in the molecule, (c): a monomer not containing 5- or more-membered heterocyclic group and containing one olefinic double bond and at least one polar functional group selected from the group consisting of a carboxyl group, hydroxyl group, amide group, amino group, epoxy group, oxetanyl group, aldehyde group and isocyanate group in the molecule.