ADHESIVE COMPOSITION CONTAINING SPECIFIC ACRYL-BASED COPOLYMER AND SPECIFIC ISOCYANATE CROSSLINKING AGENT FOR OPTICAL MEMBER, AND ADHESIVE SHEET FOR OPTICAL MEMBER USING THE COMPOSITION TO REDUCE CROSSLINKING TIME AND ADHESION STABILIZING TIME FOR IMPROVING PRODUCTIVITY

摘要

PURPOSE: An adhesive composition for a transparent optical member and an adhesive sheet for an optical member using the composition are provided, to improve light resistance and weather resistance, to inhibit yellowing and to reduce curing time after coating by using a specific acryl-based copolymer and a specific isocyanate crosslinking agent. CONSTITUTION: The adhesive composition comprises 100 parts by weight of an acryl-based polymer which is a copolymer of 100 parts by weight of an alkyl (meth)acrylate, 0.1-10 parts by weight of a monomer having a hydroxyl group and 0.05-3 parts by weight of a monomer having any functional group of carboxyl, amide and amino groups, and has a weight average molecular weight of 500,000-2,000,000 according to gel permeation chromatography; and 0.01-5 parts by weight of a polyol-modified xylylene diisocyanate crosslinking agent. Preferably the acryl-based polymer is prepared by solution polymerization or mass polymerization. The adhesive sheet comprises a support; and an adhesive layer formed on one or both sides of the support by using the composition.