发明申请
- 专利标题： Iodine Polarizing Film, a Method for Producing the Same, and a Polarizing Plate Using the Same
- 专利标题（中）： 碘偏光膜，其制造方法和使用其的偏光板
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申请号： US11885685申请日： 2006-03-09
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公开(公告)号： US20080192345A1公开(公告)日： 2008-08-14
- 发明人: Noriaki Mochizuki , Kenichiro Yoshioka , Kouichi Tanaka , Yoshiaki Matsushita
- 申请人： Noriaki Mochizuki , Kenichiro Yoshioka , Kouichi Tanaka , Yoshiaki Matsushita
- 优先权： JP2005-066915 20050310; JP2005-151797 20050525
- 国际申请： PCT/JP06/04603 WO 20060309
- 主分类号： G02B5/30
- IPC分类号： G02B5/30 ; B29D11/00 ; G02F1/1335
摘要：
The present invention relates to a polarizing film obtained by stretching a polyvinyl alcohol resin film containing iodine, an iodide a cross-linking agent and/or waterproofing agent and then treating the film with a solution containing 0.0001 to 5.0 wt % of inorganic acid except for boric acid or a salt thereof and/or organic acid and having a pH of preferably 2≦pH≦5, more preferably 2.2≦pH≦5. Said polarizing film is excellent in wet heat durability and shows less decrease in polarization characteristics in wet heat test and said polarizing film obtained in a further preferable embodiment is also excellent in dry heat durability.
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