| abstract |
Provided is an aqueous resin composition which contains a plasticizer (D) and in which a composite resin (ABC) obtained through binding between, through a silicon-oxygen bond, a polysiloxane segment (C) derived from a condensate (c) of an alkyltrialkoxysilane having an alkyl group having 1-3 carbon atoms, and a polysiloxane segment (B) of a composite resin (AB) obtained through chemical binding of a polymer segment (A) having a neutralized acidic group and the polysiloxane segment (B), is dissolved or dispersed in an aqueous medium. The aqueous resin composition is characterized in that the total contained proportion of the polysiloxane segment (B) and the polysiloxane segment (C) in the composite resin (ABC) is 15-85 mass%. The aqueous resin composition can be used to form a coating film having excellent coating film appearance, adhesion to a base material, hot water resistance, solvent resistance, weather resistance, antifouling properties, and followability to a base material, and therefore, is suitable for a coating agent. |