| abstract |
(57) Abstract: A hydroxyl group-containing acryl-urethane composition having excellent adhesion to a substrate having poor adhesion and providing a two-part aqueous acryl-urethane composition having excellent film properties. Provided are a polymer aqueous dispersion, a two-part aqueous composition containing the aqueous dispersion as a main component, and a coating agent and an adhesive containing the composition. (A) An organic polyisocyanate compound, (b) A high molecular weight polyol containing an acrylic polyol copolymerized with an ultraviolet absorbing monomer and (c) a neutralized product of an isocyanate group-terminated prepolymer obtained from a compound having an anionic hydrophilic group and two or more active hydrogens (D) after elongation in water with a water-soluble polyamine, hydrazine or a derivative thereof, or simultaneously with chain elongation, (e) terminal isocyanate group using a primary or secondary amine having a hydroxyl group , An aqueous dispersion of a hydroxyl group-containing acryl-urethane copolymer, a two-part aqueous acryl-urethane composition, a coating agent, and an adhesive obtained by blocking the above. |