Process for producing water-resistant polarizing film

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United States of America Patent

PATENT NO 8491823
APP PUB NO 20100314784A1
SERIAL NO

12866596

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Abstract

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To obtain a water-resistant polarizing film free from deterioration in dichroic ratio caused by water-resistant treatment, it is critical that adjacent sulfonic acid groups or sulfonate groups in the organic dyes to be used for the polarizing film are spaced at moderate intervals. In a process for producing a water-resistant polarizing film of the present invention, the polarizing film before water-resistant treatment includes an organic dye which comprises an azo compound 20 represented by the following general formula (1) or (2)

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Patent Owner(s)

  • NITTO DENKO CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Matsuda, Shoichi Ibaraki, JP 70 248
Miyazaki, Junzo Ibaraki, JP 11 28
Nishiguchi, Kyoko Ibaraki, JP 7 42

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