| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas barrier film having high level of gas barrier property.SOLUTION: There is provided a gas barrier film by arranging a first layer 2a containing zinc oxide and silicon dioxide and a second layer 2b containing following (A) to (C) on at least single side of a polymer film substrate 1 in this order. (A) is a copolymer having at least three components of at least one unsaturated compound selected from a group consisting of unsaturated carboxylic acid ester, styrene, unsaturated carboxylic acid, unsaturated hydrocarbon and vinyl ester (a1), unsaturated nitrile (a2) and an unsaturated compound having a hydroxyl group (a3) as monomers with percentage of (a1) to (a3) in the copolymer of (a1):(a2):(a3)=20 to 40 mass%:10 to 30 mass%:30 to 70 mass%. (B) is a compound having an isocyanate group. (C) is a compound having two or more carboxylic acid or one or more carboxylic acid anhydride group.SELECTED DRAWING: Figure 1 |
