Abstract: A coating liquid includes: ultrafine zinc oxide particles; a polyester resin; an ammonium polycarboxylate salt; and water, in which an amount of the ammonium polycarboxylate salt is from 1 to 35 mass % with respect to that of the ultrafine zinc oxide particles.

Abstract: A gas barrier multilayer film includes a film substrate, a layer formed on at least one surface of the film substrate and made of an inorganic compound, and a gas barrier layer formed on the layer made of the inorganic compound and formed of a mixture, which contains an acrylic acid polymer made of poly(meth)acrylic acid or a partially neutralized product thereof wherein a degree of neutralization of the poly(meth)acrylic acid with zinc is not larger than about 25 mol %, a sugar or starch, and a hypophosphite wherein the hypophosphite is present at about 1 mass % to about 15 mass % of a total solid content of the mixture.

Abstract: A gas-barrier laminate film (5) which includes a film base material (1), a layer (2) that contains an inorganic compound (A) and is formed on one surface of the film base material, and two layers formed on the layer that contains the inorganic compound (A) so as to be adjacent to each other, wherein the two layers are made up of a layer (3) that contains a carboxylic acid polymer (B) and a layer (4) that contains at least one selected from a group consisting of a silicon compound (C) represented by the following general formula (I) and a hydrolysate thereof, and a vinyl alcohol polymer (D): Si(OR1)4??(I) (where R1 represents an alkyl group with 1-4 carbon atoms, and the four R1s may be identical or different).