RE-PEELABLE AQUEOUS DISPERSION-TYPE ACRYLIC ADHESIVE COMPOSITION AND ADHESIVE SHEET

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Provided is a re-peelable aqueous dispersion-type acrylic adhesive composition with which it is possible to form an adhesive layer that has excellent antistatic performance, adhesion properties, re-peelability, peeling stability, resistance to a rise in adhesive force, resistance to the formation of marks on an object to be adhered, particularly resistance to the formation of white marks (white mark resistance) on an object to be adhered under high-humidity conditions, and excellent appearance properties. This re-peelable aqueous dispersion-type acrylic adhesive composition is characterized by containing an acrylic emulsion polymer formed from 70 to 99.5 wt% of a (meth)acrylic acid alkyl ester and 0.5 to 10 wt% of a carboxyl group-containing unsaturated monomer as the monomer units; an ionic compound; and a polyether-type defoaming agent represented by the following formula (I). (I) HO-(PO)n1-(EO)m1-H [In formula (I), PO is an oxypropylene group, EO is an oxyethylene group, m1 is an integer between 0 and 40, n1 is an integer of at least 1, and the form of addition of EO or PO is random or block.]