JPS5619009A - Polarizing film - Google Patents
Polarizing filmInfo
- Publication number
- JPS5619009A JPS5619009A JP9364779A JP9364779A JPS5619009A JP S5619009 A JPS5619009 A JP S5619009A JP 9364779 A JP9364779 A JP 9364779A JP 9364779 A JP9364779 A JP 9364779A JP S5619009 A JPS5619009 A JP S5619009A
- Authority
- JP
- Japan
- Prior art keywords
- polarizing film
- water soluble
- fluorescent dye
- amount
- ultraviolet absorber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To obtain a polarizing film having superior light resistance and stable performance by sticking a water soluble ultraviolet absorber to a polarizing film itself to provide ≤400mμ light absorbing characteristics.
CONSTITUTION: A water soluble ultraviolet absorber such as 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid or a water soluble fluorescent dye such as a stilbene type fluorescent dye based on sodium 4,4'-diaminostilbene-2,2'-disulfonate is dissolved in an aqueous soln. contg. iodine or dye. A polyvinyl alcohol film is dipped in the mixed aqueous soln. and drawn about 2.5W3.7 times in one direction to obtain a polarizing film. The amount of the absorber or fluorescent dye is preferably about 0.003W0.01wt% to the amount of the polymer substrate.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9364779A JPS5619009A (en) | 1979-07-25 | 1979-07-25 | Polarizing film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9364779A JPS5619009A (en) | 1979-07-25 | 1979-07-25 | Polarizing film |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5619009A true JPS5619009A (en) | 1981-02-23 |
Family
ID=14088154
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9364779A Pending JPS5619009A (en) | 1979-07-25 | 1979-07-25 | Polarizing film |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5619009A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60250303A (en) * | 1984-05-25 | 1985-12-11 | Nitto Electric Ind Co Ltd | Reflection polarizing plate |
WO1998001817A1 (en) * | 1996-07-06 | 1998-01-15 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | A covert mark and security marking system |
-
1979
- 1979-07-25 JP JP9364779A patent/JPS5619009A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60250303A (en) * | 1984-05-25 | 1985-12-11 | Nitto Electric Ind Co Ltd | Reflection polarizing plate |
WO1998001817A1 (en) * | 1996-07-06 | 1998-01-15 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | A covert mark and security marking system |
GB2329610A (en) * | 1996-07-06 | 1999-03-31 | Secr Defence | A covert mark and security marking system |
GB2329610B (en) * | 1996-07-06 | 2000-11-01 | Secr Defence | A security marking system and covert mark production |
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