AQUEOUS PRIMER COMPOSITION, SURFACE TREATING METHOD USING SAME, AND MULTILAYER STRUCTURE

摘要

An aqueous primer composition of the present invention includes a water-dispersible polyisocyanate (A) and an acrylic resin water dispersion (B), wherein a polystyrene equivalent weight average molecular weight, determined using gel permeation chromatography, of an acrylic resin in the acrylic resin water dispersion (B) is 350,000 or more, and a glass transition temperature, determined by using a differential scanning calorimeter, of the acrylic resin is 15
C to 130
C, and a weight ratio between the water-dispersible polyisocyanate (A) and the acrylic resin water dispersion (B) is (A):(B) = 70:30 to 50:50.