ADHESIVE COMPOSITION, ADHESIVE LAYER, POLARIZING FILM HAVING ADHESIVE LAYER, AND IMAGE FORMING DEVICE

摘要

Provided is an adhesive composition that contains (A) a (meth)acrylic polymer and (B) an ionic compound having an anionic moiety and a cationic moiety. The adhesive composition is characterized in that the (meth)acrylic polymer (A) is a hydroxyl group-containing (meth)acrylic polymer (A) that contains a hydroxyl group-containing monomer as a monomer unit, and the anionic moiety has an organic group and three or more carbon atoms. The anionic moiety is preferably at least one type of anionic moiety represented by general formula (1): (CnF2n+1SO2)2N- (1)(in general formula (1), n is an integer between 3 and 10), general formula (2): CF2(CmF2mSO2)2N- (2) (in general formula (2), m is an integer between 2 and 10), or general formula (3): -O3S(CF2)l SO3 - (3) (in general formula (3), l is an integer between 3 and 10).