Water-resistant polarizing film, process for producing water-resistant polarizing film, and image display device
AssigneeNitto Denko Corporation
InventorsToru Umemoto, Toshimasa Nishimori, Tadayuki Kameyama
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Abstract
A water-resistant polarizing film having an organic colorant having an anionic group, and organic nitrogen compounds. The organic nitrogen compounds include a first organic nitrogen compound having at least two nitrogen atoms in the molecule thereof, and a second organic nitrogen compound having at least two nitrogen atoms in the molecule thereof. The distance (A) between adjacent nitrogen atoms in the first organic nitrogen compound is shorter than the distance (B) between adjacent atoms of the nitrogen atoms in the second organic nitrogen compound.
Claims11
A water-resistant polarizing film, comprising an organic colorant having an anionic group, and organic nitrogen compounds,
- wherein the organic nitrogen compounds include a first organic nitrogen compound having at least two nitrogen atoms in the molecule thereof, and a second organic nitrogen compound having at least two nitrogen atoms in the molecule thereof,
- the distance (A) between adjacent nitrogen atoms in the first organic nitrogen compound is shorter than the distance (B) between adjacent nitrogen atoms in the second organic nitrogen compound, and
- the nitrogen atoms are contained in a cationic group.
A process for producing a water-resistant polarizing film, comprising a step of bringing a water-resisting treatment liquid which comprises organic nitrogen compounds into contact with at least one surface of a polarizing film comprising an organic colorant having an anionic group,
- wherein the organic nitrogen compounds include a first organic nitrogen compound having at least two nitrogen atoms in the molecule thereof, and a second organic nitrogen compound having at least two nitrogen atoms in the molecule thereof,
- the distance (A) between the nitrogen atoms in the first organic nitrogen compound is different from the distance (B) between the nitrogen atoms in the second organic nitrogen compound, and
- the nitrogen atoms are contained in a cationic group.
Dependencies are inferred from the claim text.