Adhesive composition for heat-resistant adhesive sheet and heat-resistant adhesive sheet

The invention provides an adhesive composition for a heat-resistant adhesive sheet and a heat-resistant adhesive sheet using the adhesive composition for a heat-resistant adhesive sheet. The adhesivecomposition for a heat-resistant adhesive sheet contains a (meth) acrylic copolymer and a crosslinking agent. The (meth) acrylic copolymer contains a structural unit derived from N-hydroxymethyl acrylamide, a structural unit derived from a hydroxyalkyl methacrylate, and a structural unit derived from an alkyl (meth) acrylate. The ratio of the number of moles of functional groups of the crosslinking agent to the total number of moles of crosslinkable functional groups of the (meth) acrylic copolymer is 0.1-1.0. 本发明提供耐热性粘合片用粘合剂组合物和使用该耐热性粘合片用粘合剂组合物的耐热性粘合片，该耐热性粘合片用粘合剂组合物含有(甲基)丙烯酸系共聚物和交联剂，上述(甲基)丙烯酸系共聚物含有来自N-羟甲基丙烯酰胺的结构单元、来自甲基丙烯酸羟基烷基酯的结构单元和来自(甲基)丙烯酸烷基酯的结构单元，上述交联剂的官能团的摩尔数与上述(甲基)丙烯酸系共聚物具有的交联性官能团的总摩尔数的比为0.1～1.0。