WASSERLÖSLICHE HARZZUSAMMENSETZUNG, GASSPERRFILM UND DIESEN VERWENDENDES VERPACKUNGSMATERIAL

摘要

A water soluble resin composition containing a (vinyl alcohol)-(vinylamine) copolymer having units represented by the formulae (I) and (II) (hereinafter referred to as vinyl alcohol units (I) and vinylamine units (II)) and a cross linker having functional groups capable of reacting with amino groups, wherein when an aqueous solution containing the water soluble resin composition is prepared to be an aqueous solution having a concentration of the copolymer of 10 mass%, the viscosity (the viscosity measured in accordance with ISO 3219 at 25°C) after the aqueous solution is held at 60°C for 3 hours, increase by at least 0.2 time and at most 50 times, based on the viscosity immediately after the preparation: