| abstract |
An emulsion type in which even when applied to one side of a porous sheet, it does not easily penetrate into the back side, the pressure-sensitive adhesive layer is excellent in adhesiveness and re-peeling, has no surfactant content, or contains a small amount. Silicone adhesive composition, and one side of the porous sheet has a silicone adhesive layer with little or no surfactant, and the other side has a silicone adhesive layer leached The pressure-sensitive adhesive sheet is easy to stick to an adherend and has excellent removability. SOLUTION: 100 parts by weight of an alkenyl group-containing diorganopolysiloxane, 5 to 30 parts by weight of reinforcing silica fine powder, organohydrogenpolysiloxane, 0.5 unit of R 3 SiO (wherein R is a monovalent hydrocarbon group) ) And SiO 2 units (molar ratio of 0.6 to 1.3), an emulsion-type silicone pressure-sensitive adhesive composition comprising a platinum-based catalyst, smectite clay-containing water and an emulsifier in an amount necessary for emulsification. A releasable pressure-sensitive adhesive sheet having the silicone pressure-sensitive adhesive layer on one side of a porous sheet. [Selection figure] None |