The pressure sensitive adhesive sheet has excellent adhesive strength resistance against formation of blisters and removability on heating and after heating.
The pressure sensitive adhesive sheet comprises a substrate and an adhesive composition which is coated on the surface of the substrate and comprises as the main component thereof a copolymer comprising monomeric units of an acrylic ester, monomeric units of a polar acrylic compound, monomeric units of a high glass transition temperature (Tg) macromonomer having a Tg of 20°C or above, monomeric units of a low Tg macromonomer having a Tg of below 20°C and, optionally, monomeric units of an oligomer having telechelic thiol functional groups.
这种压敏胶片具有极佳的粘合强度,可防止起泡,在加热时和加热后均可拆卸。
压敏胶片包括基材和涂布在基材表面的粘合剂组合物,其主要成分包括共聚物,共聚物由
丙烯酸酯单体单元、极性
丙烯酸化合物单体单元、Tg 为 20°C 或以上的高
玻璃化转变温度(Tg)大单体单元、Tg 低于 20°C 的低 Tg 大单体单元以及具有远切
硫醇官能团的低聚物单体单元组成。