- 专利标题： Polyvinyl alcohol film
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申请号： US10386522申请日： 2003-03-13
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公开(公告)号： US07015266B2公开(公告)日： 2006-03-21
- 发明人: Takanori Isozaki , Tetsushi Hayashi , Toshio Nakai , Naoki Fujiwara
- 申请人： Takanori Isozaki , Tetsushi Hayashi , Toshio Nakai , Naoki Fujiwara
- 申请人地址： JP Kurashiki
- 专利权人： Kuraray Co., Ltd.
- 当前专利权人： Kuraray Co., Ltd.
- 当前专利权人地址： JP Kurashiki
- 代理机构： Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- 优先权： JP2002-078888 20020320
- 主分类号： C08K5/05
- IPC分类号： C08K5/05
摘要：
The invention is a polyvinyl alcohol film having an YI value of at most 20, which is formed of a modified polyvinyl alcohol having a degree of polymerization of from 1500 to 5000, an ethylene unit content of from 1 to 4 mol % and a 1,2-glycol bond content of at most 1.4 mol %. The polyvinyl alcohol film gives polarizing films that contain no impurities and have good polarization performance, durability and hue stability.
公开/授权文献
- US20030178608A1 Polyvinyl alcohol film 公开/授权日：2003-09-25