Polyvinyl alcohol polymer film and polarization film
AssigneeKuraray Co., Ltd.
InventorsShigeyuki Harita, Takanori Isozaki, Naoki Fujiwara
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Abstract
A polyvinyl alcohol polymer film in which the amount of a polyvinyl alcohol polymer eluted when a 10 cm square polyvinyl alcohol polymer film is left in 1 liter of water of 50° C. for 4 hours is from 1 to 100 ppm. A polyvinyl alcohol film in which the content of an alkali metal compound is 0.5% by weight or less based on the polyvinyl alcohol. Further, a polarization film produced by using the same.
Claims11
A polyvinyl alcohol polymer film in which the amount of a polyvinyl alcohol polymer eluted when a 10 cm square polyvinyl alcohol polymer film is left in 1 liter of water of 50° C. for 4 hours is from 1 to 100 ppm.
Dependencies are inferred from the claim text.