JPS5648601A - Polarizing film - Google Patents

Polarizing film

Info

Publication number
JPS5648601A
JPS5648601A JP12514179A JP12514179A JPS5648601A JP S5648601 A JPS5648601 A JP S5648601A JP 12514179 A JP12514179 A JP 12514179A JP 12514179 A JP12514179 A JP 12514179A JP S5648601 A JPS5648601 A JP S5648601A
Authority
JP
Japan
Prior art keywords
film
polarizing film
immersed
ions
boric acid
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.)
Granted
Application number
JP12514179A
Other languages
Japanese (ja)
Other versions
JPS6136203B2 (en
Inventor
Tatsuki Nagatsuka
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.)
Nitto Denko Corp
Original Assignee
Nitto Electric Industrial Co Ltd
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 Nitto Electric Industrial Co Ltd filed Critical Nitto Electric Industrial Co Ltd
Priority to JP12514179A priority Critical patent/JPS5648601A/en
Publication of JPS5648601A publication Critical patent/JPS5648601A/en
Publication of JPS6136203B2 publication Critical patent/JPS6136203B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To make visible ray transmission spectra flat and improve moisture resistance and heat resistance by adsorbing and orienting I2 to a polyvinyl alcohol or its derivative film and impregnating Co ions therein.
CONSTITUTION: A saponified film of polyvinyl alcohol or its derivative polyvinyl acetal, poly(ethylene-vinyl acetate) copolymer is stretched, after which it is immersed in an aqueous I2 soln. (KI and boric acid coexist), to be fixed with I2. Next, this film is immersed in an aqueous soln. contg. three compounds of bivalent Co salt such as CoCl2, KI and boric acid to contain Co ions at about 1W50mg in 1g of the polarizing film, after which it is taken out and is dried to make the polarizing film. This polarizing film has flat light transmittability in a visible light region and has considerably improved moisture resistance and heat resistance.
COPYRIGHT: (C)1981,JPO&Japio
JP12514179A 1979-09-27 1979-09-27 Polarizing film Granted JPS5648601A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12514179A JPS5648601A (en) 1979-09-27 1979-09-27 Polarizing film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12514179A JPS5648601A (en) 1979-09-27 1979-09-27 Polarizing film

Publications (2)

Publication Number Publication Date
JPS5648601A true JPS5648601A (en) 1981-05-01
JPS6136203B2 JPS6136203B2 (en) 1986-08-16

Family

ID=14902869

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12514179A Granted JPS5648601A (en) 1979-09-27 1979-09-27 Polarizing film

Country Status (1)

Country Link
JP (1) JPS5648601A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63311203A (en) * 1987-06-12 1988-12-20 Mitsubishi Gas Chem Co Inc Production of polarizing film
JPH01105204A (en) * 1987-07-03 1989-04-21 Unitika Ltd Polarization film and its manufacture
US5071234A (en) * 1988-03-08 1991-12-10 Toray Industries, Inc. Polarization film
US5087985A (en) * 1988-07-12 1992-02-11 Toray Industries, Inc. Polarizer for visible light
EP0564925A2 (en) * 1992-04-08 1993-10-13 Agfa-Gevaert AG Polarizing film
US5666223A (en) * 1995-12-01 1997-09-09 Polaroid Corporation High-efficiency K-sheet polarizer
WO2004094510A1 (en) * 2003-03-31 2004-11-04 3M Innovative Properties Company Process for making an intrinsic polarizer
US7006174B2 (en) 1999-09-20 2006-02-28 Nitto Denko Corporation Polarizing film polarizing plate and liquid crystal display

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63311203A (en) * 1987-06-12 1988-12-20 Mitsubishi Gas Chem Co Inc Production of polarizing film
JPH01105204A (en) * 1987-07-03 1989-04-21 Unitika Ltd Polarization film and its manufacture
US5071234A (en) * 1988-03-08 1991-12-10 Toray Industries, Inc. Polarization film
US5087985A (en) * 1988-07-12 1992-02-11 Toray Industries, Inc. Polarizer for visible light
EP0564925A2 (en) * 1992-04-08 1993-10-13 Agfa-Gevaert AG Polarizing film
US5666223A (en) * 1995-12-01 1997-09-09 Polaroid Corporation High-efficiency K-sheet polarizer
US7006174B2 (en) 1999-09-20 2006-02-28 Nitto Denko Corporation Polarizing film polarizing plate and liquid crystal display
WO2004094510A1 (en) * 2003-03-31 2004-11-04 3M Innovative Properties Company Process for making an intrinsic polarizer

Also Published As

Publication number Publication date
JPS6136203B2 (en) 1986-08-16

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