Acrylic pressure-sensitive adhesive compositions and the acrylic pressure-sensitive adhesive tape

Acrylic pressure-sensitive adhesive composition comprises a vinyl monomer having a nitrogen atom in a backbone as a monomer unit, an acrylic polymer containing no carboxyl group-containing monomers essentially (A), the weight average molecular weight is less than 1000 30000 including it as (meth) acrylic polymer (B), the. The acrylic polymer (A), for example, a vinyl monomer, a (meth) acrylic acid ester represented by the following general formula (1), was copolymerized as essential components a copolymer. [In formula (1),