| abstract |
There is disclosed a gas barrier coating material comprising polyvinyl alcohol (A),nan ethylene-maleic acid copolymer (B), and a metal compound (D), wherein a ration(A)/(B) between the polyvinyl alcohol (A) and the ethylene-maleic acid copolymer (B)nfalls within a range from (A)/(B) = 50/50 to 10/90 (weight ratio), the metal compound (D)ncomprises at least one compound selected from a group consisting of hydroxides, oxides,nhalides, carbonates, sulfates, nitrates, sulfites, and acetates of bivalent or higher metalsnselected from a group consisting of Mg, Ca, Al, Fe, Co, Ni, and Cu, and a quantity of thenmetal compound (D), expressed as an equivalent value relative to carboxyl groups withinnthe ethylene-maleic acid copolymer (B), is within a range from 0.05 to 30%. Furthermore,nthere is disclosed a gas barrier laminate, comprising a plastic substrate, and a gas barriernlayer formed from this gas barrier coating material, wherein the gas barrier layer isnlaminated on top of the plastic substrate, either directly, or with an undercoat layerndisposed therebetween. |