WO2001078993A1 - Optical recording medium - Google Patents
Optical recording medium Download PDFInfo
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- WO2001078993A1 WO2001078993A1 PCT/JP2001/003267 JP0103267W WO0178993A1 WO 2001078993 A1 WO2001078993 A1 WO 2001078993A1 JP 0103267 W JP0103267 W JP 0103267W WO 0178993 A1 WO0178993 A1 WO 0178993A1
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- WO
- WIPO (PCT)
- Prior art keywords
- group
- ring
- recording medium
- optical recording
- dye
- 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.)
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Classifications
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- 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
- G11B7/249—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 organometallic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B45/00—Complex metal compounds of azo dyes
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- 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
- G11B7/2467—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 azo-dyes
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- 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
- G11B2007/24612—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 two or more dyes in one layer
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- 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
- G11B7/249—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 organometallic compounds
- G11B7/2492—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 organometallic compounds neutral compounds
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- 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
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
- G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
- G11B7/2534—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins polycarbonates [PC]
-
- 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
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/254—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers
- G11B7/2542—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers consisting essentially of organic resins
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- 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
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/258—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers
- G11B7/259—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers based on silver
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/146—Laser beam
Definitions
- the present invention relates to an optical recording medium using a chelating dye of an azo compound and a metal in a recording layer.
- a conventionally proposed optical recording medium includes a magneto-optical recording medium, a phase-change optical recording medium, an organic dye-based optical recording medium, and the like.
- organic dye-based optical recording media are considered to be superior in that they are inexpensive and the manufacturing process is simple.
- organic dye-based optical recording medium is a recordable compact disc (CD-R) in which a metal layer having a high reflectance is laminated on the organic dye layer.
- CD-R recordable compact disc
- optical recording media are required to have high sensitivity to recording laser light, good storage stability, good light resistance, a wide margin for recording power, etc., and high reflectance.
- dyes used in optical recording media are required to have performances capable of realizing these.
- the present inventors have conducted intensive studies to achieve this object, and as a result, by using an azo metal chelate dye in which a plurality of azo compounds having different structures are coordinated to one metal for the recording layer, We have found that multiple performances required for optical recording media can be improved simultaneously.
- the present invention relates to an optical recording medium provided with a recording layer readable and / or readable by a laser on a substrate, wherein the recording layer comprises two or more azo compounds having different structures, wherein the azo compound is selected from azo compounds represented by the following general formulas (I) and (II), respectively.
- the azo compound is selected from azo compounds represented by the following general formulas (I) and (II), respectively.
- ring A represents an aromatic heterocyclic ring which may have a substituent.
- Ring B is an aromatic hydrocarbon ring, an aromatic heterocyclic ring, or a ring obtained by condensing a saturated ring with these. And any of these may have a substituent in addition to X.
- X represents a group having active hydrogen.
- ring C represents an aromatic heterocyclic ring which may have a substituent.
- Ring D is an aromatic hydrocarbon ring, an aromatic heterocyclic ring, or a ring obtained by condensing a saturated ring with these. Which may have a substituent in addition to X.
- X represents a group having active hydrogen. You. )
- the optical recording medium of the present invention in which an azo metal chelate dye formed from an azo compound and a metal is used for a recording layer has a plurality of optical recording media, for example, having good light resistance, good environmental resistance, and high recording sensitivity. It has the feature that the required performance can be satisfied at the same time.
- ring A and ring C are aromatic heterocycles, and these heterocycles may have a substituent.
- ring A and ring C a structure in which one to three 5-membered and / or 6-membered rings are condensed is preferable, and a monocyclic or 2-fused ring is more preferable. Specifically, the following structures are mentioned.
- R in the same structure may be the same or different
- C1-C6 linear chains such as methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, n-bentyl, and n-hexyl Or a branched alkyl group,
- a cyclic alkyl group having 3 to 6 carbon atoms such as a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, and a cyclohexyl group;
- Alkoxy having 1 to 6 carbon atoms such as methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, sec-butoxy, tert-butoxy, n-bentyloxy, n-hexyloxy, etc.
- Alkylcarbonyl groups having 1 to 7 carbon atoms such as acetyl group, propionyl group, butyryl group, isoptyryl group, valeryl group, isovaleryl group, bivaloyl group, hexanoyl group, and hepnoyl group;
- C2-C6 groups such as vinyl, 1-propenyl, aryl, isopropyl, 2-butenyl, 1,3-butenyl, 1-pentenyl, 1-hexenyl, etc.
- Linear or branched alkenyl group
- a cyclic alkenyl group having 3 to 6 carbon atoms such as a cyclopentenyl group or a cyclohexenyl group
- Halogen atoms such as fluorine, chlorine, bromine, and iodine
- a hydroxyalkyl group having 1 to 6 carbon atoms such as a hydroxymethyl group, a hydroxyxetyl group,
- Methylamino group ethylamino group, n-propylamino group, n-butylamino group, etc.
- Dialkylamino groups having 1 to 12 carbon atoms such as dimethylamino, getylamino, di-n-propylamino, di- ⁇ -butylamino, etc.
- C3-C7alkoxycarbonylalkyl groups such as methoxycarbonylmethyl group, ethoxycarbonylmethyl group, ⁇ -propoxycarbonylmethyl group, and isopropoxycarbonylethyl group;
- Alkylthio groups with 1 to 6 carbon atoms such as methylthio, ethylthio, ⁇ -propylthio, sec-butylthio, tert-butylthio, n-bentylthio, n-hexylthio, etc.
- Alkyl groups having 1 to 6 carbon atoms such as methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, n-pentyl, n-hexyl, etc. Represents
- methoxycarbonyl ethoxycarbonyl, n-propoxycarbonyl, isopropoxycarbonyl, n-butoxycarbonyl, sec-butoxycarbonyl, tert-butoxycarbonyl, n_pentyloxycarbonyl, n-to It represents an alkoxycarbonyl group having 2 to 7 carbon atoms such as a xyloxycarbonyl group.
- Halogen atoms such as fluorine, chlorine, bromine, and iodine
- C1-C6 straight chain such as methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, sec-butyl group, tert-butyl group, n-pentyl group, n-hexyl group or A branched alkyl group,
- a cyclic alkyl group having 3 to 6 carbon atoms such as a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, and a cyclohexyl group;
- C1-C6 alkoxy such as methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, sec-butoxy, tert-butoxy, n-pentyloxy, and n-hexyloxy Represents a group.
- Halogen atoms such as fluorine, chlorine, bromine, and iodine
- C1-C6 straight chain such as methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, sec-butyl group, tert-butyl group, n-pentyl group, n-hexyl group Or a branched alkyl group,
- C1-C6 alkoxy such as methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, sec-butoxy, tert-butoxy, n-pentyloxy, and n-hexyloxy represents a group
- L is - SCH 2 -, -S0 3 - represents a.
- Trifluoromethyl group pentafluoroethyl group, heptyl fluoro-n-propyl group, heptyl fluoroisopropyl group, perfluoro-n-butyl group, perfluoro-sec-butyl group, perfluoro group C1-C6 halogenated alkyl groups such as -tert-butyl group, perfluoro-n-pentyl group, perfluoro-n-hexyl group, trifluoromethoxy group, pentafluoroethoxy group, 2,2,2-trifluorofluorene group Carbon groups such as methoxy, pentafluoroethoxy, perfluoro-n-butoxy, perfluoro-sec-butoxy, perfluoro-tert-butoxy, perfluoro-n-pentyloxy, perfluoro-n-hexyloxy, etc.
- Trifluoromethylthio group pentafluoroethylthio group, hepfluorofluoro-n-propylthio group, fluorfluoroisopropylyl group, perfluoro-n-butylthio group, perfluoro-sec-butylthio group C1-C6 halogenated alkylthio groups such as perfluoro-n-bentylthio group and perfluoro-n-hexylthio group
- substituents R are a hydrogen atom, an unsubstituted alkyl group, a halogenated alkyl group, an alkylthio group, an unsubstituted alkoxy group, a halogenated alkoxy group, an alkenyl group, a formyl group, and a carboxyl group.
- the structure of ring A or ring C is particularly preferably a structure in which two rings represented by the following formula (V) are fused.
- ring E represents an aromatic hydrocarbon ring which may have a substituent or an aromatic heterocyclic ring which may have a substituent.
- Ring E is preferably a 6-membered monocyclic ring, and specific examples include a benzene ring, a pyridine ring, a diazine ring, and a triazine.
- the structure represented by the above formula (V) is a benzothiazole ring.
- ring B and ring D are an aromatic hydrocarbon ring, an aromatic heterocyclic ring, or a ring obtained by condensing a saturated ring with these, and these are all other than X. May have a substituent.
- a 5- or 6-membered monocyclic or 2-condensed ring is preferable.
- the ring formed by condensing a saturated ring with these include a ring formed by condensing one or two saturated 5-membered or 6-membered rings with the above aromatic ring.
- examples of the aromatic hydrocarbon ring include a benzene ring and a naphthylene ring.
- aromatic heterocycle As an aromatic heterocycle,
- the ring B and the ring D are more preferably a benzene ring or a ring obtained by condensing a saturated ring with a benzene ring.
- the benzene ring G may have a substituent other than X and NRRH.
- R 10 and 1 each independently represent a group described below; or 2) bond to each other to form a ring; 3) each bond to a carbon atom constituting ring G to form a saturated ring fused to ring G I do.
- R,. And R N are each independently
- C1-C6 linear chains such as methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, n-pentyl, n-hexyl, etc.
- alkyl group which may have a branched substituent
- a phenyl group which may have a substituent having 6 to 18 carbon atoms, such as a phenyl group, a tolyl group, a xylyl group, and a naphthyl group;
- C2 to C6 straight-chain such as vinyl, topropropenyl, aryl, isopropyl, 2-butenyl, 1,3-butenyl, 1-pentenyl, 1-hexenyl, etc.
- a chain or branched alkenyl group such as vinyl, topropropenyl, aryl, isopropyl, 2-butenyl, 1,3-butenyl, 1-pentenyl, 1-hexenyl, etc.
- a chain or branched alkenyl group such as vinyl, topropropenyl, aryl, isopropyl, 2-butenyl, 1,3-butenyl, 1-pentenyl, 1-hexenyl, etc.
- a cyclic alkenyl group having 3 to 6 carbon atoms such as a cyclopentenyl group or a cyclohexenyl group
- Or c represents an alkyl group which may have a substituent having 3 to 6 carbon atoms, such as a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, etc., such an alkyl group, an aryl group, an alkenyl Group, cyclic alkenyl group, cyclic al The kill group is
- C1-C6 alkoxy such as methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, sec-butoxy, tert-butoxy, n-pentyloxy, and n-hexyloxy Group,
- An alkoxyalkoxyalkoxy group having 3 to 15 carbon atoms such as a group
- Aryl groups having 6 to 18 carbon atoms such as phenyl, tolyl, xylyl, and naphthyl;
- Aryloxy groups having 6 to 18 carbon atoms such as phenoxy, tolyloxy, xylyloxy, and naphthyloxy;
- C1-C6 alkylamino groups such as methylamino group, ethylamino group, n-propylamino group, n-butylamino group, etc.
- Dialkylamino groups having 1 to 12 carbon atoms such as dimethylamino, getylamino, di-n-propylamino, di-n-butylamino, etc.
- Halogen atoms such as fluorine, chlorine, bromine, and iodine
- An alkylcarbonyl group having 2 to 7 carbon atoms such as a carbonyloxy group, a sec-butylcarbonyloxy group, a tert-butylcarbonyloxy group, an n-pentylcarbonyloxy group, an n-hexylcarbonyloxy group,
- R in and R are an unsubstituted linear or branched alkyl group or an alkyl group substituted with halogen.
- the benzene ring G may have a substituent in addition to X and NR in R.
- C1-C6 linear chains such as methyl, ethyl, II-propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, n-pentyl, n-hexyl, or A branched alkyl group,
- C1-C6 alkoxy such as methoxy, ethoxy, ⁇ -propoxy, isopropoxy, ⁇ -butoxy, sec-butoxy, tert-butoxy, n-pentyloxy, n-hexyloxy, etc.
- Halogen atoms such as fluorine, chlorine, bromine, and iodine
- methoxycarbonyl, ethoxycarbonyl, n-propoxycarbonyl, isopropoxycarbonyl, n-butoxycarbonyl, sec-butoxycarbonyl, tert-butoxycarbonyl, n-pentyloxycarbonyl, n-to examples thereof include an alkoxycarbonyl group having 2 to 7 carbon atoms, such as a xyloxycarbonyl group, and a thiocyanato group.
- the substituent on the benzene ring G is an unsubstituted linear or branched alkyl group or an unsubstituted alkoxy group.
- the ring may be a saturated ring or a ring containing an unsaturated group, but is preferably a saturated ring.
- the size of the ring is preferably a 5- to 7-membered ring, more preferably a 5- or 6-membered ring.
- R 13 represents the same group as R 12 described below, and preferred groups include the same groups as R 12 .
- the ring size is preferably a 5-membered ring or a 6-membered ring
- a 6-membered ring is particularly preferable
- a saturated ring and an unsaturated ring are preferably a saturated ring, and specific examples include the following structures.
- the substituent R 12 on the nitrogen is Hydrogen atom
- C1-C6 linear chains such as methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, n-bentyl, n-hexyl, etc. Or a branched alkyl group which may have a substituent,
- it is a linear or branched alkyl group having 1 to 6 carbon atoms.
- Such an alkyl or aryl group is
- C1-C6 alkoxy such as methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, sec-butoxy, tert-butoxy, n-pentyloxy, and n-hexyloxy Group,
- Aryl groups having 6 to 18 carbon atoms such as phenyl, tolyl, xylyl, and naphthyl;
- Aryloxy groups having 6 to 18 carbon atoms such as phenoxy, tolyloxy, xylyloxy, and naphthyloxy;
- Tetrahydrofuryl group C1-C6 alkylamino groups such as methylamino group, ethylamino group, n-propylamino group, n-butylamino group
- Dialkylamino groups having 1 to 12 carbon atoms such as dimethylamino, getylamino, di-n-propylamino, di-n-butylamino, etc.
- Halogen atoms such as fluorine, chlorine, bromine, and iodine
- RI2 particularly preferred are unsubstituted linear or branched alkyl groups, alkyl groups substituted with halogen atoms or alkenyl groups.
- C1-C6 straight chain such as methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, sec-butyl group, tert-butyl group, n-pentyl group, n-hexyl group or A branched alkyl group,
- a cyclic alkyl group having 3 to 6 carbon atoms such as a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, and a cyclohexyl group; C1-C6 alkoxy such as methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, sec-butoxy, tert-butoxy, n-pentyloxy, and n-hexyloxy Group,
- C1-C7 alkylcarbonyl groups such as acetyl, propionyl, butyryl, isoptyryl, valeryl, isovaleryl, bivaloyl, hexanoyl, and heptanyl;
- C2-C6 linear chains such as vinyl, toppropenyl, aryl, isopropenyl, 2-butenyl, 1,3-butenyl, toppentenyl, 1-hexenyl, etc. Or a branched alkenyl group,
- a cyclic alkenyl group having 3 to 6 carbon atoms such as a cyclopentenyl group or a cyclohexenyl group
- Halogen atoms such as fluorine, chlorine, bromine, and iodine
- a hydroxyalkyl group having 1 to 6 carbon atoms such as a hydroxymethyl group, a hydroxyxetyl group,
- C1-C6 alkylamino groups such as methylamino, ethylamino, n-propylamino, and n-butylamino
- Dialkylamino groups having 1 to 12 carbon atoms such as dimethylamino, getylamino, di-n-propylamino, di-n-butylamino, etc.
- C3-C7alkoxycarbonylalkyl groups such as methoxycarbonylmethyl group, ethoxycarbonylmethyl group, n-propoxycarbonylmethyl group, and isopropoxycarbonylethyl group;
- Alkylthio groups with 1 to 6 carbon atoms such as methylthio, ethylthio, n-propylthio, sec-butylthio, tert-butylthio, n-pentylthio, and n-hexylthio
- substituents on ring B or ring D particularly preferred are an unsubstituted linear or branched alkyl group and an alkyl group substituted with a halogene.
- the chelate dye of the present invention is obtained by coordinating one metal ion with two or more azo compounds having different structures selected from the azo compounds represented by the general formulas (I) and (II). However, it is preferable that at least one of the ring structure of ring A or ring C and the ring structure of ring B or ring D of the plurality of azo compounds is different from each other.
- ring structure means a ring corresponding to a skeleton portion in rings A to D, that is, a ring directly bonded to an azo group (not including a substituent).
- a chelating dye composed of the compound (i), (ii) and Ni 2+ represented by I is an example in which the ring structure of ring B in two azo compounds in one molecule is different (julolidine ring and benzene ring).
- such a chelate dye means that two or more azo compounds present in one molecule are formed by combining different ring structures A, combining different ring structures C, and combining ring structures A and C.
- Combination, combination of different ring structures B, combination of different ring structures D, or combination of ring structures B and D means at least one of the following.
- the chelate dye of the present invention may satisfy a plurality of the above combinations.
- two or more azo compounds present in one molecule are each a combination represented by the general formula (II), and both rings C are condensed rings containing thiazole. That is, the following general formula (III)
- ring E has the same meaning as in the above formula (V)
- ring F represents an aromatic hydrocarbon ring or a ring obtained by condensing a saturated ring with the aromatic hydrocarbon ring.
- X represents a group having an active hydrogen
- two or more azo compounds in one molecule of the chelate dye (however, the ring F in each azo compound may be substituted). Do not have to have the same ring structure).
- Ring E is preferably a 5- or 6-membered ring, most preferably a 6-membered ring. Ring E is preferably an aromatic hydrocarbon ring.
- ring F examples include a structure represented by the above formula (IV).
- two or more azo compounds present in one molecule are represented by the structural formula (III), and all the rings E are benzene rings or benzene rings.
- C1-C6 straight chain such as methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, sec-butyl group, tert-butyl group, n-pentyl group, n-hexyl group Or a branched alkyl group which may have a substituent, or
- a phenyl group which may have a substituent having 6 to 12 carbon atoms, such as a phenyl group, a tolyl group, a xylyl group, and a naphthyl group; these are a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, etc. May be substituted with a halogen atom.
- the metal ion constituting the chelate dye of the present invention is not particularly limited as long as it is divalent or higher.
- the term “metal” refers to those located on the left side of the line connecting boron and rust in the long-period periodic table, that is, Group I (alkali metal and copper group) and Group II excluding hydrogen (Alkaline earth metals and zinc group), ⁇ ⁇ ⁇ group excluding boron, IV group excluding carbon and silicon, VI II (iron group and platinum group), and each subgroup of V, VI, VI I And antimony, bismuth, and polonium (see Iwanami Shoten Physical and Chemical Dictionary, 3rd edition, supplemented version, p. 339).
- it is Mg, Al, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Ru, Rh, Pd, In, Sn, Hf, 0s, Pt, or Hg. , Ni, Cu s Pd is particularly preferred.
- Method 1 A chelating dye a having only an azo compound P having the same structure as a ligand, and a chelating dye having only an azo compound Q having the same structure as that of the above azo as a ligand. After dissolving b in a suitable solvent, at room temperature (about 15 to 30 ° C)
- Method 2 A method in which multiple azo compounds (for example, P and Q) are mixed with a compound containing a metal ion to perform a chelation reaction (Equation 2)
- the method for producing a chelate dye of the present invention has been described by taking as an example a case where two types of chelate dyes having the same ligand in method 1 are used, a and b.
- Formula 2 has been described by taking as an example the case where two azo compounds in method 2 are used, P and Q.
- the chelating dye in Method 1 and the azo compound in Method 2 may be used in three or more types.
- the reaction In the case of producing the chelate dye of the present invention by the method 1, that is, the ligand exchange reaction, the reaction usually needs to be performed at room temperature for 6 hours or more, preferably 12 hours or more, and more preferably 24 hours. Specifically, the reaction solution is left at room temperature for at least 6 hours, preferably at least 12 hours, more preferably at least 24 hours. When heated, the ligand exchange reaction is expected to proceed faster than when left at room temperature, but heating above 100 ° C may degrade or decompose the dye.
- the reaction time is shorter than the above range, the reaction is stopped before the reaction proceeds sufficiently. Therefore, for example, when an optical recording medium (recording layer) is formed using the reaction solution as it is, or when a chelate dye is recovered from the reaction solution and used without purification, the amount of the obtained dye It is expected that the amount of the chelate dye of the present invention in the whole is insufficient and its performance is not sufficiently exhibited. Also, when only the pigment required for purification is obtained, the efficiency is poor because the proportion of the compound corresponding to the impurities is too large.
- the optical recording medium of the present invention may use the chelate dye of the present invention whose purity has been increased by purification, or the chelate dye of the present invention obtained by the above-mentioned method 1, method 2, or other methods. It may be used without purification (as a mixture). Purification can be performed by a generally known method such as recrystallization and various types of chromatography.
- the ratio of the chelate dye of the present invention to the total amount of dyes in the recording layer is preferably at least 5 mol%, more preferably at least 10 mol%. This is the lower limit for the total of the plurality of chelating dyes in the case of an optical recording medium containing a plurality of chelating dyes of the present invention. If the amount is less than 5 mol%, the performance of the chelate dye of the present invention may not be sufficiently exhibited.
- the purified chelate dye obtained by either method 1 or method 2 may be used in an optical recording medium.
- the upper limit is 100 mol%.
- the ratio of the chelate dye of the present invention is maximized when the ligand exchange reaction reaches an equilibrium state. Not more than 50 mol% per type.
- the recording layer of the optical recording medium of the present invention is the same as the azo-based compound represented by the general formula (I) and the general formula ( ⁇ ) as long as the performance of the present invention is not performed.
- the proportion of the chelate dye of the present invention (the total amount when a plurality of types are contained) is 5 to 95 mol% with respect to the total amount of the dyes contained in the recording layer, and the rest is an azo having the same structure.
- the chelate dye has only a system compound as a ligand.
- the chelate dye of the present invention is a chelate dye having 10 to 90 mol% and the balance having only an azo compound having the same structure as a ligand.
- the content of the chelate dye of the present invention may be measured and controlled using liquid phase chromatography.
- the optical recording medium of the present invention basically comprises a substrate and a recording layer containing a chelate dye
- an undercoat layer may be provided on the substrate if necessary.
- a reflective layer and a protective layer are sequentially laminated on a recording layer to form a medium with high reflectivity, thereby providing a write-once recording medium.
- Such a substrate is made of, for example, an acrylic resin, a methyl acryl resin, a polyolefin resin, a polyolefin resin (especially an amorphous polyolefin), a polyester resin, a polystyrene resin, an epoxy resin, or the like. And glass, and a glass provided with a resin layer made of a radiation-curable resin such as a photocurable resin.
- Injection molded polycarbonate is preferred from the viewpoints of high productivity, cost and moisture absorption resistance.
- Amorphous polyolefin is preferred from the viewpoints of chemical resistance, moisture absorption resistance and the like.
- a glass substrate is preferable in terms of high-speed response and the like.
- a resin substrate or a resin layer may be provided in contact with the recording layer, and a guide groove for recording / reproducing light may be provided on the resin substrate or the resin layer.
- the thickness of the recording layer of the azo metal chelate dye formed from the azo compound and the metal in the optical recording medium of the present invention is from 10 nm to 5000 ⁇ , preferably from 70 nm to 3000 nm.
- the recording layer can be formed by a commonly used thin-film forming method such as a vacuum deposition method, a sputtering method, a doctor blade method, a casting method, a subina method, or an immersion method. From the standpoint of mass productivity and cost, the subina method is preferred.
- a binder can be used as needed.
- known materials such as polyvinyl alcohol, polyvinyl alcohol, ketone resin, nitrocellulose, cellulose acetate, polyvinyl butyral, and polycarbonate are used.
- the chelating dye of the present invention is contained in the recording layer in an amount of 10% by weight or more.
- the number of rotations is preferably 500 to 15000 rpni. After the spin coating, a treatment such as heating or exposure to a solvent vapor may be performed in some cases.
- a transition metal chelate compound for example, acetyl acetonate chelate, bisphenyldithiol, salicylaldehyde doxyxim, bisdithio-hydiketo
- a recording sensitivity improver such as a metal-based compound may be added to improve the recording sensitivity.
- the metal-based compound is a compound in which a metal such as a transition metal is contained in the compound in the form of atoms, ions, clusters, etc., for example, an ethylenediamine-based complex, an azomethine-based complex, a phenylhydroxysiamine-based complex, and a phenanthroline-based complex.
- Organometallic compounds such as complexes, dihydroxyazobenzene-based complexes, dioxime-based complexes, nitrosaminophenol-based complexes, pyridyltriazine-based complexes, acetylacetonate-based complexes, meta-opencane-based complexes, and borfurin-based complexes.
- the metal atom is not particularly limited, but is preferably a transition metal.
- a coating solvent for forming a recording layer by a coating method such as a doctor blade method, a casting method, a spinner method, an immersion method, particularly a spinner method, a solvent that dissolves the dye of the present invention and does not attack the substrate Anything is fine, and there is no particular limitation.
- ketone alcohol solvents such as diacetone alcohol and 3-hydroxy-3-methyl-2-butenonone
- cellosolve solvents such as methyl sorb and ethyl sorb, n-hexane, n-octane, etc.
- Hydrocarbon solvents such as cyclohexane, methylcyclohexane, ethylcyclohexane, dimethylcyclohexane, n-butylcyclohexane, tert-butylcyclohexane and cyclooctane; diisopropyl ether Ether solvents such as dibutyl ether, etc .; perfluoroalkyl alcohol solvents such as tetrafluoropropanol and octafluoropentanol; and hydroxy acids such as methyl lactate, ethyl lactate and methyl 2-hydroxyisobutyrate. Ester solvents and the like.
- the dye of the present invention and, if necessary, other dyes and various additives are added.
- the recording layer components such as additive agent, placed in the installed crucible in a vacuum vessel, was evacuated down to 1 0 ⁇ about 1 0- 5 P a vacuum vessel with a suitable equivalent vacuum pump, the Ruppo
- the recording layer is formed by evaporating the components of the recording layer by heating, and depositing the components on a substrate placed opposite to the crucible.
- a reflective layer may be formed on the recording layer, and its thickness is preferably 50 to 300 nm.
- the material of the reflective layer one having a sufficiently high reflectance at the wavelength of the reproduction light, for example, a metal such as Au, Al, Ag, Cu, Ti, Cr, Ni, Pt, Ta, Cr and Pd alone or an alloy It is possible to use. Among them, Au, Al and Ag have high reflectivity and are suitable as the material of the reflective layer. In addition to these as main components, the following may be included.
- the main component means one having a content of 50% or more.
- Examples of the method for forming the reflective layer include a sputtering method, an ion plating method, a chemical vapor deposition method, and a vacuum vapor deposition method.
- a known inorganic or organic intermediate layer or adhesive layer may be provided on the substrate or under the reflective layer to improve the reflectance, improve the recording characteristics, and improve the adhesion.
- the material of the protective layer formed on the reflective layer is not particularly limited as long as it protects the reflective layer from external force.
- the organic material include a thermoplastic resin, a thermosetting resin, an electron beam curable resin, and a UV curable resin.
- the inorganic material S i 0 2, S i N 4, M g F 2, S n 0 2 , and the like.
- thermoplastic resin, a thermosetting resin, or the like can be formed by dissolving in a suitable solvent, applying a coating solution, and drying.
- the UV curable resin is used as it is or dissolved in an appropriate solvent to prepare a coating solution. It can be formed by irradiating and curing.
- acrylate resins such as urethane acrylate, epoxy acrylate and polyester acrylate can be used. These materials may be used alone or as a mixture, or may be used as a multilayer film instead of a single layer.
- a coating method such as a spin coating method or a casting method, a sputtering method, a chemical vapor deposition method, or the like is used as in the case of the recording layer.
- the spin coating method is preferable.
- the thickness of the protective layer is generally in the range of 0.1 to 10 but is preferably 3 to 30 in the present invention.
- the recording layer of the optical recording medium of the present invention may be provided on both sides of the substrate, or may be provided on one side. Further, a substrate may be further bonded to the reflective layer surface, or two optical recording media may be bonded to each other with the reflective layers facing each other as inner surfaces. An ultraviolet-curable resin layer or an inorganic thin film may be formed on the mirror side of the substrate (the surface that does not have a recording layer, etc.) to protect the surface and prevent dust from adhering.
- a print receiving layer that can be written (printed) with various types of printers, such as ink jet and thermal transfer, or various writing tools may be provided on a surface other than the recording / reproducing light incident surface.
- Recording on the optical recording medium obtained as described above is performed by irradiating a recording layer provided on both sides or one side of the substrate with a laser beam converged to about 100 nm, preferably a semiconductor laser beam.
- the part irradiated with the laser beam undergoes thermal deformation of the recording layer, such as decomposition, heat generation, and melting, due to absorption of the laser beam energy.
- Reproduction of recorded information is performed by reading the difference in reflectance between the part where thermal deformation has occurred and the part where thermal deformation has not occurred using a laser beam.
- the laser beam used for the optical recording medium of the present invention includes N 2 , He-Cd, Ar, He-Ne, ruby, semiconductor, dye laser, etc., but is particularly lightweight, easy to handle, and compact. From the standpoint, a semiconductor laser is preferred.
- This dye solution was dropped onto a resin substrate (diameter: 12 cm) made of injection-molded polycarbonate in which guide grooves were formed in advance, and applied by a subina method. After application, the coating was dried at 80 ° C for 5 minutes. The maximum absorption wavelength of the coating film was 708 nm.
- a silver film having a thickness of 100 OA was formed on this coating film by a sputtering method to form a reflection layer. Further, an ultraviolet-curing resin was spin-coated on the reflective film, and the resin was cured by irradiating ultraviolet rays to form a 5-urn-thick protective layer.
- the disc was tested for light resistance (20 hours at xenon ferrite exposure and acceleration test for 20 hours) and storage stability test (70 ° C for 85 hours at 100 hours). However, it was extremely excellent as an optical recording medium. Comparative Example 1
- An optical recording medium was prepared in the same manner as in Example 1 (b), except that 0.3 g of compound C was dissolved in 10 ml of fluorene solvent, and a dye solution obtained by filtering through a filter was used.
- a laser beam having a center wavelength of 780 nm is irradiated at a recording power of 12.5 mW, an EFM signal is recorded, and the recording portion is recorded using a CD breaker having a center wavelength of 780 nm.
- a good reproduction signal was obtained.
- An optical recording medium was prepared in the same manner as in Example 1 (b) except that 0.3 g of the compound E was dissolved in 10 ml of fluorene phenol and a dye solution obtained by filtration through a filter was used.
- the disc was tested for light resistance (20 hours of xenon feed-me acceleration / acceleration test for 20 hours) and storage stability test (70 hours at 85% RH for 100 hours). Deterioration was so severe that recording and reproduction were not possible.
- optical recording media of Examples 1 and 2 have better light resistance and storage stability than Comparative Example 2, indicating that they are excellent as optical recording media.
- Example 3
- a laser beam having a center wavelength of 780 nm was irradiated at a recording power of 12.5 mW, and an EFM signal was recorded.
- one laser beam with a center wavelength of 780 mn was irradiated at a recording power of 12.5 mW to record an EFM signal.
- one laser beam with a center wavelength of 780 nm was irradiated at a recording power of 12.5 mW to record an EFM signal.
- Example 3 Comparative Example 3, 4 susceptible of c tool industry are excellent as an optical recording medium than>
- a well-balanced optical recording medium that satisfies various required performances at a high level can be provided.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP01919970A EP1275517B1 (en) | 2000-04-17 | 2001-04-17 | Optical recording medium |
| DE60106745T DE60106745T2 (de) | 2000-04-17 | 2001-04-17 | Optisches aufzeichnungsmedium |
| AU46928/01A AU4692801A (en) | 2000-04-17 | 2001-04-17 | Optical recording medium |
| US10/015,659 US6794114B2 (en) | 2000-04-17 | 2001-12-17 | Optical recording medium |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000-114611 | 2000-04-17 | ||
| JP2000114611 | 2000-04-17 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/015,659 Continuation US6794114B2 (en) | 2000-04-17 | 2001-12-17 | Optical recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2001078993A1 true WO2001078993A1 (en) | 2001-10-25 |
Family
ID=18626393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2001/003267 Ceased WO2001078993A1 (en) | 2000-04-17 | 2001-04-17 | Optical recording medium |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6794114B2 (ja) |
| EP (1) | EP1275517B1 (ja) |
| CN (1) | CN100480054C (ja) |
| AU (1) | AU4692801A (ja) |
| DE (1) | DE60106745T2 (ja) |
| TW (1) | TWI237820B (ja) |
| WO (1) | WO2001078993A1 (ja) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW594717B (en) * | 2002-06-12 | 2004-06-21 | Ritek Corp | Optical recording medium and method for making the same and dye for improving tracking signal of an optical recording medium |
| JP4357848B2 (ja) * | 2003-02-12 | 2009-11-04 | 株式会社リコー | スクアリリウム金属キレート化合物および光記録媒体 |
| WO2004100140A1 (en) * | 2003-05-07 | 2004-11-18 | Koninklijke Philips Electronics N.V. | Write-once optical record carrier for high-speed recording |
| CN101045825A (zh) * | 2003-09-11 | 2007-10-03 | 三菱化学株式会社 | 偶氮金属螯合染料及光学记录媒体 |
| EP1672626A1 (en) * | 2003-10-10 | 2006-06-21 | Mitsui Chemicals, Inc. | Optical recording medium and compound used in the optical recording medium |
| JP2005190616A (ja) * | 2003-12-26 | 2005-07-14 | Taiyo Yuden Co Ltd | 光情報記録媒体 |
| JP4150354B2 (ja) * | 2004-04-20 | 2008-09-17 | Tdk株式会社 | 光記録材料、光記録媒体及びその製造方法 |
| WO2005117004A1 (de) * | 2004-05-28 | 2005-12-08 | Lanxess Deutschland Gmbh | Metallkomplexe als lichtabsorbierende verbindungen in der informationsschicht von optischen datenträgern |
| DE102004033794A1 (de) * | 2004-07-12 | 2006-02-02 | Lanxess Deutschland Gmbh | Kationische Metallkomplexe als lichtabsorbierende Verbindungen in der Informationsschicht von optischen Datenträgern |
| DE102004034866A1 (de) * | 2004-07-19 | 2006-02-16 | Lanxess Deutschland Gmbh | Mischungen von Azometallkomplexen als lichtabsorbierende Verbindungen in der Informationsschicht von optischen Datenträgern |
| JP2006134518A (ja) * | 2004-11-08 | 2006-05-25 | Taiyo Yuden Co Ltd | 光情報記録媒体 |
| TW200634099A (en) * | 2004-12-08 | 2006-10-01 | Clariant Int Ltd | Pyridine n-oxide based azo dyes and their metal complexes for use in optical layers for optical data recording |
| US20090053455A1 (en) * | 2005-03-29 | 2009-02-26 | Mitsubishi Kagaku Media Co., Ltd | Optical recording medium, metal complex compound and organic dye compound |
| US20110069595A1 (en) * | 2008-05-30 | 2011-03-24 | Mitsubishi Kagaku Media Co., Ltd. | Azo metal chelate dye and optical recording medium |
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| DE3337118A1 (de) * | 1983-10-12 | 1985-04-25 | Agfa-Gevaert Ag, 5090 Leverkusen | Farbfotografisches aufzeichnungsmaterial mit farbabspaltern, die mit metallionen chelatisierbare 6-arylazo-2-amino-3-pyridinolfarbstoffe freisetzen, und ein farbbild mit einer bildmaessigen verteilung von nickelkomplexen der farbstoffe |
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2001
- 2001-04-17 TW TW090109341A patent/TWI237820B/zh not_active IP Right Cessation
- 2001-04-17 EP EP01919970A patent/EP1275517B1/en not_active Expired - Lifetime
- 2001-04-17 AU AU46928/01A patent/AU4692801A/en not_active Abandoned
- 2001-04-17 DE DE60106745T patent/DE60106745T2/de not_active Expired - Lifetime
- 2001-04-17 WO PCT/JP2001/003267 patent/WO2001078993A1/ja not_active Ceased
- 2001-04-17 CN CNB018016790A patent/CN100480054C/zh not_active Expired - Lifetime
- 2001-12-17 US US10/015,659 patent/US6794114B2/en not_active Expired - Lifetime
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Also Published As
| Publication number | Publication date |
|---|---|
| US20020051941A1 (en) | 2002-05-02 |
| AU4692801A (en) | 2001-10-30 |
| US6794114B2 (en) | 2004-09-21 |
| DE60106745T2 (de) | 2006-02-09 |
| DE60106745D1 (de) | 2004-12-02 |
| TWI237820B (en) | 2005-08-11 |
| EP1275517A1 (en) | 2003-01-15 |
| CN100480054C (zh) | 2009-04-22 |
| EP1275517A4 (en) | 2003-05-28 |
| EP1275517B1 (en) | 2004-10-27 |
| CN1383402A (zh) | 2002-12-04 |
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