COATING LIQUID FOR GAS BARRIERS, PACKAGING MATERIAL WITH GAS BARRIER PROPERTIES AND PACKAGING BAG FOR HYDROTHERMAL TREATMENT

摘要

According to the present invention, a coating liquid for gas barriers comprises the following components A, B, C, D, E and a solvent, wherein the ratio of the total of the mol number M_C of the component C and the mol number M_D of the component D to the mol number M_B of the component B,(M_C + M_D)/M_B, is 0.05-16 and the content of the component E is 0.1-100 parts by mass with respect to 100 parts by mass of the component A. A: A polycarboxylic acid-based polymer. B: A polyvalent metal ion. C: A volatile base or acid (however, this excludes carbonic acid). D: A carbonate ion. E: At least one silicon compound selected from the group consisting of silicon compounds that comprise a functional group that reacts with the component A and hydrolysable orthosilicate esters.