| abstract |
A pressure sensitive adhesive containing an adhesive polymer having, as a monomer unit, a monomer having (A) a (meth) acrylic acid ester represented by Formula (1) shown below, (B) a (meth) acrylic acid, and (C) a monomer having a nitrogen atom and a vinyl group, and a hydrophobic silica microparticle, where component (A) contains 50 parts or more by weight of the (meth) acrylic acid ester, where R 2 in Formula (1) shown below is an alkyl group having 4 to 6 carbon atoms, for every 100 parts by weight of component (A). (In Formula (1), R 1 represents a hydrogen atom or a methyl group, and R 2 represents alkyl group.) |