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    • 2. 发明申请
    • 染料系偏光板
    • 含有偏光极化剂
    • WO2005015275A1
    • 2005-02-17
    • PCT/JP2004/011340
    • 2004-08-06
    • 日本化薬株式会社株式会社ポラテクノ貞光 雄一川辺 和幸
    • 貞光 雄一川辺 和幸
    • G02B5/30
    • G02B5/3016
    • A high-performance polarizer which is less influenced by by-products contained in a dye, has excellent polarizing performance in the visible light and ultraviolet regions, and has moisture resistance and heat resistance. The polarizer comprises: a dye-containing polarizing film comprising a polyvinyl alcohol resin film containing a water-soluble dye or a salt thereof which in their free acid form are represented by the following formula (1): (wherein R1 and R2 each represents hydrogen, halogeno, lower alkyl, lower alkoxy, or carboxy; R3 and R4 each represents hydrogen, halogeno, lower alkyl, lower alkoxy, or hydroxy; X represents oxygen, sulfur, NH, or NCH3; and l and m each is 0, 1, or 2, provided that l+m>0) and which have a purity as high as 90% or above; and a film having a transmittance at 380 nm of 70% or higher which has been laminated to at least one side of the dye-containing polarizing film.
    • 受染料中所含副产物影响较小的高性能偏振片在可见光和紫外线区域具有优异的偏振性能,并具有耐湿性和耐热性。 偏振片包括:含有偏光膜的含有水溶性染料或其盐的聚乙烯醇树脂膜,其游离酸形式由下式(1)表示:(其中R1和R2各自表示氢 ,卤素,低级烷基,低级烷氧基或羧基; R 3和R 4各自表示氢,卤代,低级烷基,低级烷氧基或羟基; X表示氧,硫,NH或NCH 3; l和m各自为0,1 ,或2,条件是l + m> 0),其纯度高达90%以上; 以及已经层叠在含有染料的偏光膜的至少一面上,在380nm具有70%以上的透射率的膜。