To provide a coating composition hardly causing deterioration of barrier property to gases such as oxygen and water vapor even under a humid condition, and not containing such a compound to be concerned about harmfulness to a human body.
This gas barrier coating composition comprises (a) a vinyl alcohol-based resin, (b) at least one kind of compound selected from the group consisting of a metal alcoholate, a hydrolyzate of the metal alcoholate, a condensate of the metal alcoholate, a chelate compound of the metal alcoholate, a hydrolyzate of the metal chelate compound, a condensate of the metal chelate compound, a metal acylate, a hydrolyzate of the metal acylate and a condensate of the metal acylate expressed by R1mM(OR2)n, and (c) a compound having a silicon atom bonded to a hydrolyzable group and/or a hydroxy group and an isocyanurate group and/or an isocyanate group.
KAWAHARA KOJI
NISHIKAWA AKIRA
