OPTICAL PRESSURE-SENSITIVE ADHESIVE COMPOSITION AND OPTICAL FUNCTIONAL FILM USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an optical pressure-sensitive adhesive composition capable of improving both durability and reworkability that are conflicting when used in attaching an optical functional film to a glass substrate.SOLUTION: An optical pressure-sensitive adhesive composition is obtained by mixing 100 pts.mass of a (meth)acrylate-based copolymer (a) with 0.001-5.0 pts.mass of an organopolysiloxane (b) and/or its hydrolytic condensate. The organopolysiloxane (b) is a compound containing an alkoxy group, an acid anhydride group and a polyether group in a molecule, in which two or more kinds of specific siloxane units that form a siloxane bond are inserted between atoms of O and Si in at least one of O-Si bonds existing in a molecule of an alkoxysilane represented by the formula: [RSi(OR)] or its hydrolytic condensate. An optical functional film is obtained by lamination of a film composed of the composition.