Patent ID: 8039071

Claim:
A gas barrier layered product comprising a base material and a layer stacked on at least one surface of the base material, wherein the layer is formed of a composition comprising: a hydrolyzed and condensed product of at least one compound (L) comprising a metal atom to which at least one characteristic group selected from a halogen atom and an alkoxy group has been bonded; and a neutralized product of a polymer comprising at least one functional group selected from a carboxyl group and a carboxylic anhydride group, wherein at least 55 mol % of a —COO— group contained in the at least one functional group has been neutralized with a metal ion having a valence of two or more, wherein the compound (L) comprises at least one compound (A) represented by the following chemical formula (I) and at least one compound (B) represented by the following chemical formula (II): M 1 (OR 1 ) n X 1 k Z 1 m-n-k (I) wherein M 1 is Si, Al, Ti, Zr, Cu, Ca, Sr, Ba, Zn, B, Ga, Y, Ge, Pb, P, Sb, V, Ta, W, La, or Nd; R 1 is an alkyl group; X 1 is a halogen atom; Z 1 is an alkyl group substituted by a functional group having reactivity to a carboxyl group; m is equal to a valence of M 1 ; n is an integer of 0 to (m−1); k is an integer of 0 to (m−1); and 1≦n+k≦(m−1), M 2 (OR 2 ) q R 3 p-q-r X 2 r (II) wherein M 2 is Si, Al, Ti, Zr, Cu, Ca, Sr, Ba, Zn, B, Ga, Y, Ge, Pb, P, Sb, V, Ta, W, La, or Nd; R 2 is an alkyl group; R 3 is an alkyl group, an aralkyl group, an aryl group, or an alkenyl group; X 2 is a halogen atom; p is equal to a valence of M 2 ; q is an integer of 0 to p; r is an integer of 0 to p; and 1 ≦q+r≦p, and wherein a mole ratio of the compound (A)/the compound (B) is in a range of 0.5/99.5 to 40/60.