| 摘要 |
Provided is a self-adhesive composition which can remedy the occurrence of residual adhesive when the self-adhesive agent is exposed to high temperatures, a self-adhesive sheet comprising the self-adhesive composition, and a method for producing the self-adhesive sheets. The self-adhesive composition comprising a styrene elastomer (component A) and an amorphous polypropylene elastomer (component B), wherein the component A is a hydrogenated product of a block copolymer formed by copolymerization of at least a polymer block comprising styrene compound-derived units, a block resulting from 1,2-vinyl polymerization of units derived from a diene compound 1, a block resulting from 1,4-addition polymerization of units derived from a diene compound 1, a block resulting from 1,2-vinyl polymerization of units derived from a diene compound 2, and a block resulting from 1,4-addition polymerization of units derived from a diene compound 2; and when the [tan´] pmax of the self-adhesive composition is 0.6 or more and less than 1.1, the content of the component A is 60 to 80 wt%, and when the [tan´] pmax of the self-adhesive composition is 1.1 to 3.0, the content of the component A is 50 to 80 wt%. |
