| abstract |
PROBLEM TO BE SOLVED: To provide a film having oxygen gas barrier properties and moisture resistance, and a method for producing the same, and a polycarboxylic acid polymer (A) containing at least a polyvalent metal salt and having a density of 1.80 g / cm. 3 or more, the area ratio α [peak area S 1 (3700 to 2500 cm −1 ) / peak area S 2 (1800 to 1500 cm −1 )] of the infrared absorption spectrum is 2.5 or less, and the infrared absorption spectrum A film having a peak ratio β [peak A 1 (1560 cm −1 ) / peak A 2 (1700 cm −1 )] of 1.2 or more, a polycarboxylic acid polymer (A), a polyvalent metal compound (B), A solution or dispersion (coating solution) of a mixture containing either one of volatile base (C) or acid (D) and a solvent is applied onto the substrate to form a film, and then together with the substrate. Or substrate Separating the Luo film, method for producing the film characterized in that a heat treatment at a temperature in the range of 60 ° C. to 400 ° C.. [Selection figure] None |