A pressure sensitive adhesive sheet is provided which comprises a pressure sensitive adhesive layer formed of a pressure sensitive adhesive composition. The pressure sensitive adhesive composition contains an aliphatic polycarbonate and a pressure sensitive adhesive resin other than the aliphatic polycarbonate. The pressure sensitive adhesive sheet can be reduced in the adhesive strength at desired timing by a novel mechanism of action so that the release of an adherend becomes easy. The above pressure sensitive adhesive composition preferably contains an acid/base generator that generates an acid or a base by applying energy.
提供了一种压敏胶片,它包括由压敏胶组合物形成的压敏胶层。 压敏胶组合物包含脂肪族聚
碳酸酯和脂肪族聚
碳酸酯以外的压敏胶
树脂。 压敏胶层可以通过一种新的作用机理在所需的时间降低粘合强度,从而使被粘物的释放变得容易。 上述压敏胶组合物最好包含一个酸/碱发生器,通过施加能量产生酸或碱。