JPS646949A - Cross-linked porphine-based optical recording medium - Google Patents

Cross-linked porphine-based optical recording medium

Info

Publication number
JPS646949A
JPS646949A JP2653688A JP2653688A JPS646949A JP S646949 A JPS646949 A JP S646949A JP 2653688 A JP2653688 A JP 2653688A JP 2653688 A JP2653688 A JP 2653688A JP S646949 A JPS646949 A JP S646949A
Authority
JP
Japan
Prior art keywords
porphine
olefinic double
double bond
cross
linked
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
JP2653688A
Other languages
Japanese (ja)
Other versions
JPH0529101B2 (en
Inventor
Kazuhiko Kominami
Kazuaki Sakota
Masao Iwamoto
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.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
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 Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP2653688A priority Critical patent/JPS646949A/en
Publication of JPS646949A publication Critical patent/JPS646949A/en
Publication of JPH0529101B2 publication Critical patent/JPH0529101B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/244—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only
    • G11B7/246—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes
    • G11B7/248—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising organic materials only containing dyes porphines; azaporphines, e.g. phthalocyanines

Landscapes

  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)

Abstract

PURPOSE:To inhibit a thermal irreversible change at a temp. above the temp.of liq. helium and to improve the stability of a record by converting portphine as a photoreactive guest into cross-linked porphine bonding to a host polymer at two or more points. CONSTITUTION:A porphine deriv. having two or more olefinic double bonds represented by formula I is copolymerized with a compd. having an olefinic double bond. In formula I, at least two of R1-R4 has an olefinic double bond. Methacrylic ester or styrene giving a polymer having superior transparency and formability is preferably used as the compd. having an olefinic double bond. The concn. of porphine as a cross-linked structure in a formed copolymer is controlled by regulating the molar ratio between the monomers, that is, the molar ratio between the porphine deriv. and the compd. having an olefinic double bond preferably to 1:100-1:1,000,000. Thus, the thermal stability of the copolymer is improved and the hole recovery rate after heating is increased.
JP2653688A 1987-02-23 1988-02-09 Cross-linked porphine-based optical recording medium Granted JPS646949A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2653688A JPS646949A (en) 1987-02-23 1988-02-09 Cross-linked porphine-based optical recording medium

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3789687 1987-02-23
JP2653688A JPS646949A (en) 1987-02-23 1988-02-09 Cross-linked porphine-based optical recording medium

Publications (2)

Publication Number Publication Date
JPS646949A true JPS646949A (en) 1989-01-11
JPH0529101B2 JPH0529101B2 (en) 1993-04-28

Family

ID=26364326

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2653688A Granted JPS646949A (en) 1987-02-23 1988-02-09 Cross-linked porphine-based optical recording medium

Country Status (1)

Country Link
JP (1) JPS646949A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008109467A1 (en) * 2007-03-02 2008-09-12 Arizona Board Of Regents For And On Behalf Of Arizona State University Electrically conducting porphyrin and porphyrin-fullerene electropolymers

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5945195A (en) * 1982-09-08 1984-03-13 Tdk Corp Optical recording medium
JPS5962188A (en) * 1982-10-02 1984-04-09 Tdk Corp Optical recording medium
JPS60188405A (en) * 1984-03-08 1985-09-25 Nippon Telegr & Teleph Corp <Ntt> Polymer containing photoisomerizable atomic group, and its use
JPS61232447A (en) * 1985-04-08 1986-10-16 ヘキスト・セラニーズ・コーポレーション Optical data memory medium having color forming block/polymer information layer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5945195A (en) * 1982-09-08 1984-03-13 Tdk Corp Optical recording medium
JPS5962188A (en) * 1982-10-02 1984-04-09 Tdk Corp Optical recording medium
JPS60188405A (en) * 1984-03-08 1985-09-25 Nippon Telegr & Teleph Corp <Ntt> Polymer containing photoisomerizable atomic group, and its use
JPS61232447A (en) * 1985-04-08 1986-10-16 ヘキスト・セラニーズ・コーポレーション Optical data memory medium having color forming block/polymer information layer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008109467A1 (en) * 2007-03-02 2008-09-12 Arizona Board Of Regents For And On Behalf Of Arizona State University Electrically conducting porphyrin and porphyrin-fullerene electropolymers
US8669359B2 (en) 2007-03-02 2014-03-11 Arizona Board Of Regents For And On Behalf Of Arizona State University Electrically conducting porphyrin and porphyrin-fullerene electropolymers

Also Published As

Publication number Publication date
JPH0529101B2 (en) 1993-04-28

Similar Documents

Publication Publication Date Title
ATE149036T1 (en) IMPACT MODIFIER
KR900009859A (en) Liquid crystalline polyester resin composition with improved fluidity
CA2002846A1 (en) Plastic optical fiber
EP1422256A4 (en) Thermotropic liquid-crystal polymer
IT1203363B (en) THERMOTROPIC COPOLYESTER, PROCEDURE FOR ITS PREPARATION AND USE
DK490286A (en) VINYL CHLORIDE RESIN AND ITS USE
CA2289535A1 (en) Homopolymers with high photoinduceable double refraction
JPS646949A (en) Cross-linked porphine-based optical recording medium
EP0936227A4 (en) Lowly birefringent polymer, process for the production thereof, and optical pickup lens
DK596987D0 (en) (METH) ACRYLIC ACID ESTERS, THEIR PREPARATION AND USE
JPS57186241A (en) Optical information recording disc
GR3006637T3 (en)
EP0306894A3 (en) Methacrylic acid ester resin composition
BR8705574A (en) VINYL CHLORIDE COPOLIMER SUITABLE TO BE USED AS A BINDING RESIN FOR PARTICULAR MATERIAL; AND MAGNETIC RECORDING MEDIA
ES8303454A1 (en) A method for the suspension polymerization of styrenic monomers.
ES2114011T5 (en) DEPOLIMERIZATION.
DK0429127T3 (en) Thermotropic copolyesteramide, process for its preparation and use
JPS6489020A (en) Magnetic recording medium
JPS6473523A (en) Magnetic recording medium
JPS6490205A (en) Acrylate polymer
EP0336105A3 (en) Method for enhancing the polymerization activity of crude cycloolefin monomers for bulk polymerization
EP0175318A3 (en) Copolymers of ethylene and alkyl esters of (meth)acrylic acid, process for the manufacture thereof and their use in damping material
Fontanille et al. Liquid-Crystal Polymers With Mesogen Side Groups, Made From Ethylenically Unsaturated Polymers, and Process for Making Them
JPS5287449A (en) Methacrylic resin composition
Wimberger et al. Polycarbonate copolymer of spirobisindan and bisphenol-A, method of preparing such a copolymer and optical components of such a copolymer

Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term