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JPS57115507A - Polarized film and its manufacture - Google Patents

Polarized film and its manufacture

Info

Publication number
JPS57115507A
JPS57115507A JP226381A JP226381A JPS57115507A JP S57115507 A JPS57115507 A JP S57115507A JP 226381 A JP226381 A JP 226381A JP 226381 A JP226381 A JP 226381A JP S57115507 A JPS57115507 A JP S57115507A
Authority
JP
Japan
Prior art keywords
film
graft copolymer
polyvinylalchohol
heat resistance
polarized film
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
JP226381A
Other languages
Japanese (ja)
Other versions
JPH0459604B2 (en
Inventor
Rinjiro Ichikawa
Katsuhiko Nose
Chiyotsugu Hitomi
Hiroyuki Hamada
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.)
Toyobo Co Ltd
Original Assignee
Toyobo 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 Toyobo Co Ltd filed Critical Toyobo Co Ltd
Priority to JP226381A priority Critical patent/JPS57115507A/en
Publication of JPS57115507A publication Critical patent/JPS57115507A/en
Publication of JPH0459604B2 publication Critical patent/JPH0459604B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2329/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
    • C08J2329/02—Homopolymers or copolymers of unsaturated alcohols
    • C08J2329/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

PURPOSE:To form a polarized film with excellent optical performance, moisture and heat resistance and dry heat resistance, by adding dichromatic dye to a liquid mixture of a graft copolymer taking polyvinylalchohol as root polymer, and forming film and extending it unidirectionally. CONSTITUTION:100pts.wt. Polyvinylalchohol (50-100% saponified material of polyvinylacetate), about 1-70pts.wt. water insoluble addition polymerization monomer (e.g. ethylene and vinyl benzol etc.), and about 0.05-10pts.wt. water soluble polymerization initiator (e.g. ammonium ceric nitrate) are mixed and they are reacted in water medium to form graft copolymer. About 1-40mg of dichromatic dye per 1g of copolymer is added in the liquid mixture of the said graft copolymer to form film, and the obtained film is extended unidirectionally to 3-7 times to obtain the polarized film.
JP226381A 1981-01-09 1981-01-09 Polarized film and its manufacture Granted JPS57115507A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP226381A JPS57115507A (en) 1981-01-09 1981-01-09 Polarized film and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP226381A JPS57115507A (en) 1981-01-09 1981-01-09 Polarized film and its manufacture

Publications (2)

Publication Number Publication Date
JPS57115507A true JPS57115507A (en) 1982-07-19
JPH0459604B2 JPH0459604B2 (en) 1992-09-22

Family

ID=11524475

Family Applications (1)

Application Number Title Priority Date Filing Date
JP226381A Granted JPS57115507A (en) 1981-01-09 1981-01-09 Polarized film and its manufacture

Country Status (1)

Country Link
JP (1) JPS57115507A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5666223A (en) * 1995-12-01 1997-09-09 Polaroid Corporation High-efficiency K-sheet polarizer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5666223A (en) * 1995-12-01 1997-09-09 Polaroid Corporation High-efficiency K-sheet polarizer

Also Published As

Publication number Publication date
JPH0459604B2 (en) 1992-09-22

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