▎ 摘　　要

NOVELTY - Pressure-sensitive adhesive composition comprises a first polymer and an ionic liquid, where the first polymer as a base polymer and further comprising a second polymer having a glass transition temperature (Tg) of 40-180° C. USE - The adhesive composition is used for electrical peeling and in pressure-sensitive adhesive sheet and joined body (all claimed). The adhesive sheet is used: for mobile terminals such as smart phones, mobile phones, laptop computers, video cameras, and digital cameras; for fixing vehicle-mounted members such as batteries and motors; for fixing applications such as ceramic capacitors and lithium ion batteries; in semiconductor manufacturing processes and inspections; for protective applications in metalworking processes such as stainless steel plates for railways; in silicon substrates for semiconductor wafers, sapphire substrates for LEDs, silicon carbide substrates and metal base substrates, thin-film transistor substrates for displays, color filter substrates and base substrates for organic electroluminescent panels; and in semiconductor substrates such as compound semiconductor substrates, passive matrix substrates, surface cover glass for smart phones, and touch panel sensors attached to the cover glass, one glass solution substrates, organic substrates and organic-inorganic hybrid substrates, flexible glass substrates for flexible displays, and graphene sheets. ADVANTAGE - The composition is sufficiently reduced by voltage application even after storage in a high-temperature and high-humidity environment and is possible to form a pressure-sensitive adhesive layer with excellent wet heat stability. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: a pressure-sensitive adhesive sheet comprising a pressure-sensitive adhesive layer formed from the pressure-sensitive adhesive composition; and a joined body comprising the adhesive sheet and a conductive material, where the adhesive layer is attached to the conductive material.