AQUEOUS POLYHYDROXYURETHANE RESIN DISPERSION, METHOD FOR PRODUCING SAID AQUEOUS DISPERSION, GAS-BARRIER RESIN FILM PRODUCED USING SAID AQUEOUS DISPERSION, AQUEOUS POLYHYDROXYURETHANE RESIN DISPERSION COMPOSITION CONTAINING CLAY MINERAL, GAS-BARRIER COATING AGENT COMPRISING SAID COMPOSITION, AND GAS-BARRIER RESIN FILM

摘要

There are provided: an aqueous polyhydroxyurethane resin dispersion which can achieve long-term storage that is a requirement for industrial applications, and with which a coating film having an excellent gas-barrier property can be formed; an aqueous dispersion composition containing a complex of the resin and a clay mineral; and a film having an excellent gas-barrier property, which is produced using the aqueous polyhydroxyurethane resin dispersion or the aqueous dispersion composition. Specifically, there are provided: an aqueous polyhydroxyurethane resin dispersion containing a polyhydroxyurethane resin finely dispersed in water, wherein the polyhydroxyurethane resin contains a repeating unit represented by formula (1) as a basic structure and has a carboxyl group-containing chemical structure moiety represented by formula (6) in the structure; an aqueous dispersion composition containing this polyhydroxyurethane resin component and a layered clay mineral favorably made into a composite; and a gas-barrier resin film which is produced using the aqueous polyhydroxyurethane resin dispersion or the aqueous dispersion composition.