| abstract |
(57) [Summary] [Object] To provide a room temperature curable resin composition comprising an aqueous polyurethane-vinyl polymer composite, and a coating agent or ink using the same. [Structure] A polyurethane-vinyl polymer composite obtained by addition-polymerizing a polymerizable unsaturated monomer group in the presence of an aqueous polyurethane, and the above resin composition containing water as a main component, In the aqueous coating agent or ink, the aqueous polyurethane component is (A) a polyhydroxy compound having at least one carboxyl group and two or more hydroxyl groups, (B) a polyhydroxy compound having two or more hydroxyl groups, (C) An NCO-terminated polyol-isocyanate polyaddition reaction product composed of an isocyanate compound having two or more isocyanate groups as an essential component is neutralized, and -CONHNH 2 is added to the end extended with a polyfunctional hydrazide compound. A polyurethane resin having a group, wherein the vinyl polymer component comprises a polymerizable unsaturated monomer containing a ketone group or an aldehyde group. |