| abstract |
Disclosed is a water-resistant polarizing film which contains an organic dye having an anionic group, and an acyclic compound having 2-5 nitrogen atoms. The acyclic compound is preferably a linear aliphatic diamine or a salt thereof, and more preferably an aliphatic diamine having 2-8 carbon atoms or a salt thereof. The water-resistant polarizing film can be produced, for example, by bringing a treatment liquid, which contains the acyclic compound, into contact with one or both surfaces of a polarizing film that contains the organic dye. |