COATING LIQUID, GAS BARRIER FILM USING SAME, GAS BARRIER LAMINATE, GAS BARRIER MULTILAYER FILM, AND THEIR PRODUCTION METHODS

摘要

Disclosed is a coating liquid characterized by containing a first solvent, 0.1-30 parts by mass of a polycarboxylic acid polymer per 100 parts by mass of the solvent, 0.01-0.35 chemical equivalent of an alkali metal compound relative to the carboxyl groups in the polycarboxylic acid polymer, and 0.05-0.75 chemical equivalent of a polyvalent metal compound relative to the carboxyl groups in the polycarboxylic acid polymer. The coating liquid is also characterized in that the polycarboxylic acid polymer has a number average molecular weight within the range of 40,000-10,000,000.