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AssigneeThe Nippon Synthetic Chemical Industry Co., Ltd.
InventorsHirosato TAKAHASHI, Yukitoshi NISHIKAWA, Tomoyuki FUJII
Estimating the term…
A packaging bag for packaging a polyvinyl alcohol-based resin that contains a modified group having active hydrogen, the packaging bag including a film having a water vapor permeability of 10 g/m2/day or less. Accordingly, when a polyvinyl alcohol-based resin that contains a modified group having active hydrogen is packaged with the packaging bag, the storage stability of the polyvinyl alcohol-based resin that contains a modified group having active hydrogen can be improved, and hence an aqueous solution of the polyvinyl alcohol-based resin that contains a modified group having active hydrogen, the solution being reduced in insoluble matter content, can be obtained even after long-term storage thereof.
A packaging bag configured to package a polyvinyl alcohol-based resin that contains a modified group having active hydrogen, wherein the packaging bag comprises a film having a water vapor permeability of 10 g/m2/day or less.
A method of storing a polyvinyl alcohol-based resin that contains a modified group having active hydrogen, wherein the method comprises hermetically sealing and packaging a particulate matter of the polyvinyl alcohol-based resin that contains a modified group having active hydrogen with a packaging bag including a film having a water vapor permeability of 10 g/m2/day or less.
Dependencies are inferred from the claim text.