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

Provided are: an aqueous polyhydroxyurethane resin dispersion which can achieve long-term storage that is a requirement for industrial applications, and from which a coating film having excellent gas-barrier properties can be formed; an aqueous dispersion composition containing a complex of the resin and a clay mineral; and a film having excellent gas-barrier properties, which is produced using the aqueous polyhydroxyurethane resin dispersion or the aqueous dispersion composition.More specifically, the present invention provides: an aqueous polyhydroxyurethane resin dispersion, which is produced by finely dispersing a polyhydroxyurethane resin in water, wherein the polyhydroxyurethane resin contains a repeating unit represented by formula (1) as the basic structure and has a carboxyl-group-containing chemical structural moiety represented by formula (6) in the aforementioned structure; an aqueous dispersion composition which comprises a complex formed appropriately from the polyhydroxyurethane resin component and a layered clay mineral; and a gas-barrier resin film which is produced using the aqueous polyhydroxyurethane resin dispersion or the aqueous dispersion composition.