| abstract |
Provided is a removable pressure-sensitive adhesive sheet that is highly scratch-resistant, is resistant to whitening (moisture-absorption whitening) when stored in humid conditions, and has excellent appearance characteristics and antistatic performance. Said pressure-sensitive adhesive sheet has an acrylic pressure-sensitive adhesive layer on at least one surface of a transparent film substrate and is characterized in that: said transparent film substrate has a base layer comprising a resin material and a top-coat layer provided on a first surface of said base layer; said top-coat layer comprises a polythiophene, an acrylic resin, and a melamine cross-linker, with the average thickness (Dave) of said top-coat layer being 2 to 50 nm and the amount of variation (ΔD) in said thickness being no more than 40%; and the aforementioned acrylic pressure-sensitive adhesive layer is formed from a water-dispersed acrylic pressure-sensitive removable-adhesive composition containing an acrylic emulsion polymer that is polymerized using a reactive emulsifier containing a radical-polymerizable functional group and comprises feedstock monomers including an alkyl (meth)acrylate ester (A) and a carboxyl-group-containing unsaturated monomer (B), with said alkyl (meth)acrylate ester (A) constituting 70% to 99.5% and said carboxyl-group-containing unsaturated monomer (B) constituting 0.5% to 10% of the total weight of the feedstock monomers. |