Invention Grant
- Patent Title: Method for producing polarizing film
- Patent Title (中): 偏光膜的制造方法
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Application No.: US10538492Application Date: 2002-12-12
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Publication No.: US08012383B2Publication Date: 2011-09-06
- Inventor: Koji Matsumoto , Narutoshi Hayashi , Nobuyuki Kurata
- Applicant: Koji Matsumoto , Narutoshi Hayashi , Nobuyuki Kurata
- Applicant Address: JP Tokyo
- Assignee: Sumitomo Chemical Company, Limited
- Current Assignee: Sumitomo Chemical Company, Limited
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- International Application: PCT/JP02/13035 WO 20021212
- International Announcement: WO2004/053542 WO 20040624
- Main IPC: B29D7/01
- IPC: B29D7/01 ; B29C55/04 ; B05D5/06 ; B05D3/12
Abstract:
A method for producing a polarizing film comprising the step of dipping a polyvinyl alcohol film in/on which iodine is adsorbed and oriented in an aqueous solution containing boric acid wherein the aqueous solution has an absorbance of 0.13 or less at a wavelength of 450 nm. The produced polarizing film has a high contrast.
Public/Granted literature
- US20060244163A1 Method for producing polarizing film Public/Granted day:2006-11-02
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