Adhesive composition and adhesive sheet

An adhesive composition comprising:

• (A) an adhesive polymer consisting of one of (meth)acryl-based polymer, urethane-based polymer, silicone-based polymer and polyolefin-based polymer;
• (B) a conductive polymer complex including polythiophene present as an electrically conductive polymer, and a polyanion having a block copolymer structure;
• and
• (C) a nonaqueous solvent or dispersion medium,
• wherein the (meth)acryl-based polymer consists of a polymer of a (meth)acrylic acid ester component unit and a repeating unit derived from a monomer copolymerizable with the (meth)acrylic acid ester component unit, or a polymer of the (meth)acrylic acid ester component unit, the (meth)acryl-based polymer contains 50% by mass or more of the (meth)acrylic acid ester component unit in terms of monomers,
• wherein the (meth)acrylic acid ester component unit consists of an ester formed by reaction between an alcohol having only a linear or branched alkyl group having 1 to 20 carbon atoms, and acrylic acid or methacrylic acid, and/or an ester formed by reaction between an alicyclic alcohol having 3 to 14 carbon atoms, and acrylic acid or methacrylic acid,
• wherein the monomer copolymerizable with the (meth)acrylic acid ester component unit consists of one or a combination of (meth)acrylic acid, alkoxyalkyl (meth)acrylates, alkali metal (meth)acrylate salts, di(meth)acrylic acid esters of (poly)alkylene glycol, monoesters formed by reactions between (meth)acrylic acid and polypropylene glycol or polyethylene glycol, 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, and 4-hydroxybutyl (meth)acrylate,
• wherein the conductive polymer complex is present in the composition in an amount of from 0.1 parts to less than 3 parts by mass relative to 100 parts by mass of the adhesive polymer, and wherein an adhesive layer obtained by forming and drying the adhesive composition such that a dry film thickness of the adhesive layer is 10 μm has a haze of 0.8% or smaller.