| abstract |
(57) Abstract: An adhesive composition having excellent adhesion to an adherend, good stress relaxation, and capable of following expansion and contraction of a substrate, and this adhesive composition Provided are an adhesive sheet and an adhesive optical member having a layer. An adduct of (A) a (meth) acrylic ester copolymer and (B) a polyisocyanate compound, wherein the content ratio of a bifunctional adduct and a trifunctional or higher adduct is 100: 0 to 10: 9 by weight A pressure-sensitive adhesive composition containing a crosslinking agent which is 0, a pressure-sensitive adhesive sheet in which a layer comprising the above-mentioned pressure-sensitive adhesive composition is provided on at least one side of a substrate sheet, and a layer comprising the above-mentioned pressure-sensitive adhesive composition on at least one side of a sheet-shaped optical member Is an adhesive optical member. |