JPS5619009A - Polarizing film - Google Patents

Polarizing film

Info

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
Application number
JP9364779A
Other languages
Japanese (ja)
Inventor
Shigeyoshi Sugibuchi
Kazuo Momiyama
Mitsuo Hiramatsu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanritsu Denki KK
Sanritsu Electric
Original Assignee
Sanritsu Denki KK
Sanritsu Electric
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanritsu Denki KK, Sanritsu Electric filed Critical Sanritsu Denki KK
Priority to JP9364779A priority Critical patent/JPS5619009A/en
Publication of JPS5619009A publication Critical patent/JPS5619009A/en
Pending legal-status Critical Current

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
JP9364779A 1979-07-25 1979-07-25 Polarizing film Pending JPS5619009A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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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