| abstract |
The present invention forms a gas barrier layer constituted by a hydroxypolyurethane resin formed by reacting a specific compound having two or more 5-membered ring cyclic carbonate groups and a compound having two or more amino groups at a functional group equivalence ratio of 0.8 to 1.25 as a main component Wherein at least one layer constituting the film is a layer having gas barrier properties and the layer is a gas formed of a polyhydroxyurethane resin having a specific chemical structure Barrier film, and gas barrier film. According to the present invention, by using a specific hydroxyurethane resin, it is possible to easily and easily change the gas barrier property against humidity, to avoid generation of noxious gas during incineration disposal, A coating composition for forming a gas barrier layer, a gas barrier film, and a method for producing a gas barrier film which are capable of reducing the amount of the gas barrier film itself are provided. |