PRESSURE-OR HEAT-SENSITIVE ADHESIVE COMPOSITION AND ADHESIVE SHEET PREPARED BY USING THE SAME ADHESIVE COMPOSITION

摘要

PURPOSE:To obtain a pressure- or heat-sensitive adhesive composition excellent in adhesion and heat resistance and swelling as it absorbs an aqueous alkaline solution and produce an adhesive sheet by using this adhesive composition. CONSTITUTION:This pressure- or heat-sensitive adhesive composition is characterized by its composition containing a (meth)acrylic acid ester-based copolymer composed of a copolymer between an alkyl (meth)acrylate and (meth)acrylic acid and another copolymer' between an alkyl (meth)acrylate and N-methylol(meth)-acrylamide in combination with a vinyl acetate-vinyl lactam copolymer. An adhesive sheet as another objective material can be produced by using the adhesive composition.