WO2008075647A1 - 光記録媒体用放射線硬化性組成物、及び光記録媒体 - Google Patents
光記録媒体用放射線硬化性組成物、及び光記録媒体 Download PDFInfo
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- WO2008075647A1 WO2008075647A1 PCT/JP2007/074232 JP2007074232W WO2008075647A1 WO 2008075647 A1 WO2008075647 A1 WO 2008075647A1 JP 2007074232 W JP2007074232 W JP 2007074232W WO 2008075647 A1 WO2008075647 A1 WO 2008075647A1
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- optical recording
- compound
- acrylate
- radiation curable
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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
- G11B7/254—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
- G11B7/2545—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 containing inorganic fillers, e.g. particles or fibres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
- C08F290/06—Polymers provided for in subclass C08G
- C08F290/067—Polyurethanes; Polyureas
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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
- G11B7/254—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
Definitions
- the present invention relates to a radiation curable composition for an optical recording medium protective layer, and an optical recording medium using the same.
- urethane does not contain inorganic substances such as silica particles.
- Active energy ray curable containing (meth) acrylate, oligomer component which is at least one of epoxy (meth) acrylate, dioxolanyl group-containing (meth) acrylate, and other ethylenically unsaturated compounds The composition has been released! /, Ru (Patent Document 2).
- Patent Document 3 a radiation curable composition having a water absorption of 2% by weight or less.
- Patent Document 4 As an adhesive composition for optical recording media (optical discs), an example using a photocuring method has been disclosed (Patent Document 4).
- Patent Document 1 Japanese Patent Application Laid-Open No. 2005-036184
- Patent Document 2 Japanese Patent Laid-Open No. 2003-231725
- Patent Document 3 Japanese Unexamined Patent Publication No. 2006-161030
- Patent Document 4 Japanese Unexamined Patent Application Publication No. 2004-359779
- the radiation curable composition according to Patent Document 1 has surface hardness and transparency even when it is used as a layer of a cured product having a film thickness of several tens of meters or more when forming a laminate on a substrate. The And has excellent adhesion to the substrate!
- the cured product has adhesion to the substrate, low curing shrinkage, mechanical strength, and the like, and can prevent corrosion of the metal layer. Is obtained.
- the radiation curable composition according to Patent Document 3 has a water absorption of 2% or less, so that corrosion of the metal layer can be reduced.
- any of the radiation curable compositions has problems such as data storage stability when applied to optical recording media that cannot sufficiently prevent corrosion of the metal layer.
- an object of the present invention is to provide a radiation curable composition for optical recording media which is effective in preventing corrosion without impairing mechanical properties and storage stability, and an optical recording medium using the same. is there.
- the inventors of the present invention have made extensive studies on a radiation curable composition for optical recording media that can satisfy the above-mentioned object.
- the radiation curable composition containing a urethane (meth) ate acrylate compound has an epoxy group. It has been found that the corrosion of the metal can be prevented by containing.
- a urethane-based composition is used as the radiation curable composition used for the protective layer of the optical recording medium.
- the epoxy compound is not radiation curable, and therefore, after the radiation curable composition is cured by radiation, it cannot be incorporated into the cured network, so that it becomes only a plasticizer. It was thought to reduce the mechanical properties.
- the epoxy compound is a thermosetting resin, there are concerns about self-polymerization and immediate storage stability.
- epoxy compounds are made from epichlorohydrin, the amount of chlorine brought in from the raw materials was thought to promote corrosion. Therefore, an epoxy compound is included in the radiation curable composition. Attempts have been made, something that has never been done before.
- the gist of the present invention is that a radiation curable composition for optical recording media containing at least (A) a urethane (meth) acrylate compound! /, And (C) one or more epoxy groups.
- the present invention resides in a radiation curable composition for optical recording media, comprising a compound to be contained and having an acid component of 1.0 X 10 — 4 eq / g or less (claim 1).
- Another aspect of the present invention is to provide a radiation curable composition for film surface incidence type optical recording media containing at least (A) a urethane (meth) acrylate compound! /, (C) epoxy
- a radiation curable composition for optical recording media comprising a compound containing at least one group (claim 2).
- the radiation curable composition for optical recording media of the present invention preferably contains (B) (A) an acrylate compound other than the urethane (meth) acrylate compound. 3).
- the radiation curable composition for optical recording media of the present invention contains a polyfunctional (meth) acrylate compound as the acrylate compound other than the (B) (A) urethane (meth) acrylate compound. Is preferred (Claim 4).
- the compound (C) containing at least one epoxy group in the molecule is bisphenol.
- the resin is at least one resin selected from the group consisting of an A-type epoxy resin and a hydrogenated bisphenol A-type epoxy resin (Claim 5).
- the optical recording medium for radiation-curable composition of the present invention it is preferable that the or less epoxy group content force 1 X 10_ 6 mol / g or more 1 X 10_ 3 mol / g of (claim 6 ).
- the (A) urethane (meth) acrylate compound is obtained by reacting a polyisocyanate compound, a polyether polyol compound and a (meth) acrylate compound containing a hydroxyl group. (Claim 7).
- the polyether polyol compound is preferably a polyalkylene glycol having a molecular weight of 800 or less (claim 8).
- Still another subject matter of the present invention is the curing of the radiation curable composition for optical recording media of the present invention. It exists in the optical recording medium characterized by the above-mentioned (Claim 9).
- a radiation-curable composition for an optical recording medium which has an effect of preventing corrosion of a metal layer of the optical recording medium without impairing mechanical properties and storage stability, and its An optical recording medium provided with a cured product can be provided.
- FIG. 1 is a cross-sectional view showing an example of an optical recording medium of the present invention.
- (A) of "(A) Urethane (meth) acrylate compound", (B) of "(B) (A) Atrylate compound other than urethane (meth) acrylate compound” , (C) of “(C) Compound containing at least one epoxy group in the molecule”, (D) of “(D) Polymerization initiator”, “(x) Trimethoxysilane compound containing (x) isocyanate group” (X) and (y) etc. of “(y) epoxy group-containing trimethoxysilane compound” are symbols for distinguishing each compound, and have no other meaning.
- the radiation curable composition for optical recording media of the present invention contains (A) a urethane (meth) acrylate compound and (C) a compound containing one or more epoxy groups.
- the radiation curable composition for optical recording media of the present invention may contain any other production method and physical properties as long as the effects of the present invention are not significantly limited.
- the (A) urethane (meth) acrylate compound is usually obtained by reacting a polyisocyanate compound, a compound containing a hydroxyl group, and a (meth) acrylate compound containing a hydroxyl group.
- Urethane (meth) acrylate compounds are preferably urethane acrylate compounds. This is because the surface curability is excellent and tack is hardly left behind.
- the polyisocyanate compound is a polyisocyanate compound having two or more isocyanate groups in the molecule.
- a polyisocyanate compound is preferred because of its excellent mechanical properties.
- polyisocyanate compound examples include tetramethylene diisocyanate, hexamethylene diisocyanate, trimethylenohexamethylene diisocyanate, bis (isocyanatomethinole) cyclohexane, cyclohexane diisocyanate.
- One of these polyisocyanate compounds may be used alone, or two or more thereof may be used in any combination and ratio.
- the molecular weight of the polyisocyanate compound is usually 100 or more, preferably 150 or more, and usually 1000 or less, preferably 500 or less. This is because when the molecular weight is within this range, the balance between strength and porosity is good.
- compounds containing a hydroxyl group include polyols containing two or more hydroxyl groups. Specific examples thereof include ethylene glycol, 1,2-propanediol, 1,3 propanediol, and 2-methylol.
- the above polyols have an ether bond for forming a multimer or the like, a polyether polyol compound; an ester bond by reaction with a polybasic acid, or an ester bond by ring-opening polymerization of a cyclic ester.
- polyether polyol compound examples include polytetramethylene glycol as a ring-opening polymer of a cyclic ether such as tetrahydrofuran, in addition to the polyol multimer; ethylene oxide of the polyol, And adducts of alkylene oxides such as propylene oxide, 1,2-butylene oxide, 1,3 butylene oxide, 2,3 butylene oxide, tetrahydrofuran, and epichlorohydrin.
- polytetramethylene glycol as a ring-opening polymer of a cyclic ether such as tetrahydrofuran, in addition to the polyol multimer
- alkylene oxides such as propylene oxide, 1,2-butylene oxide, 1,3 butylene oxide, 2,3 butylene oxide, tetrahydrofuran, and epichlorohydrin.
- polyester polyol compound examples include a reaction product of the polyol and a polybasic acid such as maleic acid, fumaric acid, adipic acid, sebacic acid, and phthalic acid, and a cyclic ester such as force prolatatone.
- a polybasic acid such as maleic acid, fumaric acid, adipic acid, sebacic acid, and phthalic acid
- a cyclic ester such as force prolatatone.
- examples thereof include poly force prolatatatone as a ring-opening polymer.
- polycarbonate polyol compound examples include the above polyols and an alkylene carbonate such as ethylene carbonate, 1,2-propylene carbonate, 1,2-butylene carbonate, diphenolate carbonate, 4-methinoresidue.
- alkylene carbonate such as ethylene carbonate, 1,2-propylene carbonate, 1,2-butylene carbonate, diphenolate carbonate, 4-methinoresidue.
- One of these polyols may be used alone, or two or more thereof may be used in any combination and ratio.
- the number average molecular weight of the polyols is at least part of the polyols, preferably 15 mol% or more of the total polyols, more preferably 30 mol% or more of the total polyols, 200 or more. Preferred is 400 or more, more preferred is 1500 or less, and more preferred is 800 or less. When the number average molecular weight of the polyol is within this range, the water absorption and hygroscopicity as a monomer having an urethane bond are lowered, and corrosion of the recording layer when used as a cured product in an optical recording medium can be suppressed. Because.
- polyether polyol compounds are preferred.
- polyalkylene glycol is preferred.
- alkylene glycol tetramethylene glycol is particularly preferable.
- the number average molecular weight of the polyols is usually 1500 or less, preferably 800 or less, and usually 200 or more, preferably 400 or more.
- a polyalkylene glycol having a number average molecular weight of 800 or less is preferred, and a polytetramethylene glycol having a number average molecular weight of 800 or less is particularly preferred.
- the (meth) acrylate compound containing a hydroxyl group is a compound having both a hydroxyl group and a (meth) acryloyl group.
- a hydroxyethyl (meth) acrylate examples include an addition reaction product of a sidyl ether compound and (meth) acrylic acid, and a mono (meth) acrylate of a glycol compound.
- (meth) acrylate compounds containing hydroxyl groups may be used alone or in any combination and ratio of two or more.
- the molecular weight of the (meth) acrylate compound containing a hydroxyl group is usually 40 or more, preferably 80 or more, and usually 800 or less, preferably 400 or less.
- a polyisocyanate compound, a hydroxyl group-containing compound, and a hydroxyl group-containing (meth) atalylate compound are subjected to an addition reaction, whereby a (A) urethane (meth) atalyl having a (meth) atalyloyl group. Rate compounds can be produced. At that time, the isocyanate group and the hydroxyl group are charged in a stoichiometric amount.
- a diol is used as a compound containing a hydroxyl group, and the (A) urethane (meth) acrylate compound having a (meth) attaroyl group further increases the adhesion and surface hardening degree of the resulting cured product. There is an advantage.
- the amount of the (meth) acrylate compound containing a hydroxyl group is used, and the hydroxyl group-containing compound and the hydroxyl group are used. It is usually 20% by weight or more, preferably 40% by weight or more, and usually 80% by weight or less, preferably 60% by weight or less, based on the total amount of hydroxyl group-containing compounds combined with the (meth) acrylate compound contained. To do. Depending on the ratio, the molecular weight of the (A) urethane (meth) acrylate compound obtained can be controlled.
- the addition reaction between these polyisocyanate compounds and a (meth) acrylate compound containing a hydroxyl group can be carried out by any known method.
- a mixture of a polyisocyanate compound, a (meth) acrylate compound containing a hydroxyl group and an addition reaction catalyst is usually 40 ° C or higher, preferably 50 ° C or higher, and usually 90 ° C or lower. It is preferable to mix under 75 ° C or less.
- a mixing method it is preferable to drop a mixture of a hydroxyl group-containing (meth) acrylate compound and an addition reaction catalyst in the presence of a polyisocyanate compound.
- the catalyst for the addition reaction for example, dibutyltin laurate, dibutyltin ditatoate, dioctyltin dilaurate, dioctyltin ditatoate, and the like are preferable.
- One of these may be used alone, or two or more may be used in any combination and ratio.
- (A) Urethane As the (meth) acrylate compound, a highly transparent material is preferable. For example, a compound having no aromatic ring is preferable. Radiation curable compositions containing aromatic rings and their cured products can be colored or initially colored to V, or even during storage even if stored or strengthened. There is a slight yellowing).
- (A) urethane (meth) acrylate compounds have a structure that does not have an aromatic ring, so that they are colorless and transparent, such as in optoelectronics applications where there is no deterioration in hue and light transmission is not reduced. There are advantages that make it particularly suitable for application to the intended use.
- polyisocyanate compounds having no aromatic ring include bis (isocyanatomethinole) cyclohexane, cyclohexane diisocyanate, and bis (isocyanatocyclohexyl) methane. , Isophorone diisocyanate and the like. One of these may be used alone, or two or more may be used in any combination and ratio.
- Specific examples of the compound containing a hydroxyl group having no aromatic ring include alkylene polyol, alkylene polyester, alkylene carbonate polyol, and the like. One of these may be used alone, or two or more may be used in any combination and ratio.
- Specific examples of the (meth) acrylate compound having no aromatic ring! / And a hydroxyl group include hydroxyalkyl (meth) acrylate. One of these may be used alone, or two or more may be used in any combination and ratio.
- the weight average molecular weight of these (A) urethane (meth) acrylate compounds is usually 1000 or more, preferably ⁇ 1500 or more, and usually 10,000 or less, preferably ⁇ 5000 or less. This is because when the weight average molecular weight is within this range, the balance between viscosity and mechanical properties is good.
- the content of the (A) urethane (meth) acrylate compound is preferably 25% by weight or more in the radiation curable composition for optical recording media, more preferably 30% by weight or more. Further, it is preferably 95% by weight or less, more preferably 90% by weight or less. If the amount is too small, moldability and mechanical strength when forming a cured product are lowered, and cracks tend to occur. On the other hand, if the amount is too large, the surface hardness of the cured product tends to decrease.
- the radiation curable composition for optical recording media of the present invention comprises: (A) Urethane (meth) attaly In addition to rate compounds, (B) (A) Atallate compounds other than (A) urethane (meth) atalylate compounds (hereinafter sometimes referred to as “(B) other atallylate compounds”! /) Contains!
- the other acrylate compound other than the (A) urethane (meth) acrylate compound, and any known acrylate salt compound may be used unless the effect of the present invention is significantly limited. it can. Specific examples include monofunctional (meth) acrylate compounds and polyfunctional (meth) acrylate compounds. Of these, monofunctional acrylate compounds and polyfunctional acrylate compounds are preferred because they have excellent surface curability and no tack remains.
- the monofunctional (meth) acrylate compound include (meth) acrylamides such as N, N-dimethyl (meth) acrylamide, hydroxyethyl (meth) acrylate, hydroxypropyl
- alicyclic (meth) acrylates such as bornyl (meth) acrylate, cyclohexyl (meth) acrylate and (meth) acrylate having a tricyclodecane skeleton.
- alicyclic (meth) atallylate is preferred and more hydrophobic tetrahydrofurfuryl (meth) acrylate, isobornyl (meth) acrylate, cyclohexyl (meth) acrylate, tricyclodecane.
- Preference is given to (meth) acrylate with a skeleton!
- Examples of the polyfunctional (meth) acrylate compound include alicyclic poly (meth) acrylate and alicyclic poly
- Specific examples include polyethylene glycol di (meth) acrylate, 1, 2 polypropylene glycol di (meth) acrylate, 1, 3-polypropylene glycol di (meth) acrylate, polytetramethylene glycol di (meth) Atalylate, 1,2-polybutylene glycol di (meth) acrylate, polyisobutylene glycol di (meth) acrylate, bisphenol A, bisphenol?
- Bisphenols such as di (meth) acrylate, bisphenol A, bisphenol F, or bisphenol S of alkylene oxide adducts such as ethylene oxide, propylene oxide, or butylene oxide of bisphenol such as bisphenol S (Meth) acrylate with a polyether skeleton such as di (meth) acrylate of hydrogenated derivatives, blocks of various polyether polyol compounds and other compounds, or di (meth) acrylate of random copolymers And hexanediol di (meth) acrylate, nonanediol di (meth) acrylate, decandiol diol (meth) acrylate, 2, 2 bis [4 (meth) tertyloxyphenyl] propane 2, 2 Bis [4 1 (2 (Meth) Atalylyloxyethoxy) Two Norre] propane, bis (hydroxymethyl) tricyclo [5 ⁇ 2.
- the divalent (meth) acrylates are preferred because of the controllability of the cross-linking formation reaction.
- Specific examples of the divalent (meth) acrylates include alicyclic poly (meth) acrylates and alicyclic poly (meth) acrylates.
- trifunctional or higher functional (meth) acrylates are preferably used. Specific examples thereof include trimethylolpropane tris (meth) acrylate, pentaerythritol tris (meth) acrylate, dipentaerythritol hexa (meth) acrylate and the like, and trifunctional having an isocyanurate skeleton. (Meth) acrylate and the like.
- the molecular weight of these (ii) other attalylate compounds is usually 50 or more, preferably 100 or more, and usually 1000 or less, preferably 500 or less. This is because when the molecular weight is within this range, there is a good balance between viscosity and shrinkage.
- the content of the other acrylate compound is preferably 10% by weight or more in the radiation-curable composition for optical recording media, more preferably 15% by weight or more, Further, it is preferably 70% by weight or less, more preferably 50% by weight or less. (Ii) If the amount of other (meth) acrylate compounds is too small, the viscosity of the radiation curable composition for optical recording media tends to increase. If the amount is too large, the mechanical properties of the cured product tend to decrease. .
- any one kind may be used alone, or two or more kinds may be used in any combination and ratio! /.
- the other acrylate compound includes at least one monofunctional (meth) acrylate compound and at least one polyfunctional (meth) acrylate compound.
- the content of (ii) the other acrylate compound relative to the sum of (ii) the urethane (meth) acrylate compound and (ii) the other acrylate compound is preferably 80% by weight or more. More preferably, it is 90% by weight or more, more preferably 95% by weight or more, and particularly preferably 98% by weight or more. (Ii) If there are few other acrylate compounds, the curing rate decreases, the surface curability decreases, and tack tends to remain.
- the radiation curable composition for optical recording media of the present invention contains radiation (for example, active energy).
- radiation for example, active energy
- D It is preferable to contain a polymerization initiator to initiate a polymerization reaction that proceeds by a single line, ultraviolet rays, electron beam, etc.! /.
- a polymerization initiator is contained.
- a radical generator which is a compound having a property of generating radicals by light is generally used, and any known radical generator can be used unless the effect of the present invention is significantly limited. Is possible.
- radical generator examples include benzophenone, 2,4,6 trimethylbenzophenone, 4,4-bis (jetylamino) benzophenone, 4-phenylbenzophenone, methyl orthobenzoylbenzoate, Thioxanthone, Jetylthioxanthone, Isopropylthixanthone, Black-mouthed thixanthone, 2-Ethylanthraquinone, T-butynole anthraquinone, Diethoxyacetophenone, 2-Hydroxy-2-methyl-1-phenylpronone 1-one, Penzinoresimethino lectenator Nore, 1-Hydroxycyclohexenolevenole ketone, Benzoin methinoleatenore, Benzoin ethinoreethenore, Benzoin isopropenoleenore, Benzoin isop, Tinoreethenore, Met
- the cured product of the radiation curable composition for an optical recording medium of the present invention is used for an optical recording medium or the like using a laser having a wavelength of 380 to 800 nm as a light source, the laser beam necessary for reading is sufficiently contained. It is preferable to select and use the type and amount of radical generator so as to pass through the cured product layer. In this case, it is particularly preferable to use a short wavelength photosensitive radical generator in which the resulting cured layer hardly absorbs laser light.
- examples of such short-wavelength photosensitive radical generators include benzophenone, 2, 4, 6 trimethylbenzophenone, 4 fuel benzophenone, and methyl orthobenzoyl benzoate.
- those having a hydroxyl group such as 1-hydroxycyclohexyl phenyl ketone are particularly preferred!
- any one type may be used alone, or two or more types may be used in any combination and in any ratio.
- the amount of the radical generator is usually 0.1 parts by weight or more, preferably 100 parts by weight or more, preferably 100 parts by weight of the total of (A) urethane (meth) acrylate compound and (B) other acrylate compounds. 1 part by weight or more, more preferably 2 parts by weight or more, and usually 10 parts by weight or less, preferably 9 parts by weight or less, 7 parts by weight or less, more preferably 5 parts by weight or less, particularly preferably 4 parts by weight or less. . If the amount of the radical generator is too large, the polymerization reaction proceeds rapidly, which not only increases the optical distortion but also may deteriorate the hue. If the amount is too small, the radiation curable composition for optical recording media may not be sufficiently cured.
- sensitizers such as methyl 4-dimethylaminobenzoate, ethyl 4-dimethylaminoaminobenzoate, amyl 4-dimethylaminobenzoate, 4-dimethylaminoacetophenone and the like may be used in combination.
- One sensitizer may be used alone, or two or more sensitizers may be used in any combination and in any ratio.
- a benzophenone-based polymerization initiator is used as the polymerization initiator, the total amount of (A) urethane (meth) atalylate compound and (B) other acrylate compounds is 100 parts by weight.
- the amount is preferably 2 parts by weight or less, more preferably 1 part by weight or less, and usually 0.5 parts by weight or more. This is because if the amount of the benzophenone-based polymerization initiator is large, the volatile components in the cured product increase, and the film thickness in a high temperature and high humidity environment may decrease.
- Examples of the (D) polymerization initiator other than the radical generator include an oxidizing agent.
- the polymerization initiator may contain impurities such as a chlorine atom, a sulfur atom, a phosphorus atom, and a sodium atom.
- the content of such impurities is preferably small. Each content is preferably 10 ppm or less, more preferably 50 ppm or less, still more preferably 30 ppm or less, and particularly preferably 10 ppm or less.
- the radiation curable composition for optical recording media of the present invention comprises (C) a compound containing at least one epoxy group.
- the epoxy group may be contained in any way.
- a method of mixing a compound containing at least one epoxy group in the molecule with a radiation curable composition for optical recording media, and (A) urethane (meth) acrylate compound containing an epoxy group for optical recording media examples include mixing with radiation curable compositions.
- the compound containing at least one epoxy group (C) according to the present invention is not particularly limited as long as it is a compound having an epoxy group.
- polyphenols such as bisphenol A, bisphenol F, bisphenol S, phenol, or novolaks of alkylphenols
- glycols trimethylo Glycidyl ether type epoxy resin obtained by glycidylation of polyhydric alcohol such as rupropane
- Daricidyl ester type epoxy resin obtained by glycidylation of polycarboxylic acid such as adipic acid and phthalic acid
- Diaminodiphenylmethane diaminodiphenyl Glycidylamine type epoxy resin obtained by glycidylation of polyamines such as sulfonated isocyanurate
- Glycidylaminoglycidyl ether type epoxy resin obtained by glycidylation of aminophenol, aminoalkylphenol, etc .
- 3, 4-Epoxy-6- And cycloaliphatic epoxides such as methyl cyclohexyl, 3,4-epoxy-6-methylcyclohexyl carboxy
- These compounds may be substituted with a halogen such as chlorine or bromine, or may be added with a polyalkylene oxide such as (poly) ethylene oxide, or have an aromatic ring May be hydrogenated. These compounds are preferably refined to reduce impurities and are not colored.
- glycidyl ether type epoxy resins and hydrogenated compounds thereof which are glycidylated products of bisphenol A and bisphenol F, are easily available, and deteriorate the physical properties of the radiation curable composition for optical recording media. It is preferable because it is difficult to prevent. Among them, bisphenol A type epoxy resin or hydrogenated bisphenol A type epoxy resin is particularly preferable.
- (C) silica having an epoxy group introduced on the surface is also preferable to use as a compound containing one or more epoxy groups in the molecule.
- silica having an epoxy group introduced on its surface a method for producing silica having an epoxy group introduced on its surface will be described.
- the alkoxy group of the silicate oligomer is hydrolyzed using an acid catalyst or the like in an alcohol solvent to synthesize the silicon oxide nanoparticles, and the surface of the obtained silicon oxide nanoparticles contains (y) an epoxy group.
- a trimethoxysilane compound in combination with other silane compounds as appropriate, silica particles whose surfaces are modified with epoxy groups can be obtained.
- methanol, ethanol, propanol and the like are preferable as the alcohol solvent, but methanol is particularly preferable because of a good balance between hydrophilicity and hydrophobicity.
- These alcohol solvents can be used alone or in any combination of two or more. And ratios may be used.
- the amount of the alcohol solvent used is usually 100% by weight or more, preferably 200% by weight or more, and usually 900% by weight or less, preferably 400% by weight or less based on the solid content. If the amount of alcohol solvent used is too small, gelation may occur, and if it is too large, the reaction may not proceed sufficiently.
- silicate oligomer for example, methyl silicate, ethyl silicate, and their (meth) atteroyl-modified products, epoxy-modified products, butoxy-modified products, etc. are preferable, and methyl silicate is particularly preferable. This is because the reaction rate is appropriate, gelation and cloudiness are unlikely to occur, and stable particles are easily formed.
- silicate oligomer only one kind may be used. Two or more kinds may be used in any combination and ratio.
- the acid catalyst inorganic acids, organic acids, acidic chelate compounds, and the like are preferable, but acetylacetone aluminum is particularly preferable among acidic chelate compounds because pH is appropriate.
- One of these acid catalysts may be used alone, or two or more thereof may be used in any combination and ratio.
- the amount of the acid catalyst used is usually 0.05% by weight or more, preferably 0.1% by weight or more, and usually 1% by weight or less, preferably 0.5% by weight, based on the total of the solid content and the solvent. The following is desirable. If the amount of the acid catalyst used is too small, the reaction may not proceed sufficiently, and if it is too much, gelation may occur.
- the (y) epoxy group-containing trimethoxysilane compound for example, glycidoxymethinolegetoxysilane, 2- (3,4-epoxycyclohexenole) ethinoretrimethoxysilane and the like are preferable. Glycidoxypropyltrimethoxysilane is preferred. This is because the reaction rate with the surface of the silicon oxide nanoparticle is appropriate, and it tends not to cause gelation or cloudiness.
- the (y) epoxy group-containing trimethoxysilane compound only one kind may be used, or two or more kinds may be used in any combination and ratio.
- the amount of the epoxy group-containing trimethoxysilane compound is not limited, but is usually 0.5% by weight or more, preferably 1% by weight or more, more preferably 2%, based on the silicon oxide nanoparticles. It is used in an amount of not less than wt%, usually not more than 200 wt%, preferably not more than 100 wt%, more preferably not more than 50 wt%. (Y) Fewer epoxy group-containing trimethoxysilane compounds If it is too much, the metal corrosion prevention effect may be insufficient, and if it is too much, the storage stability of the composition may be lowered.
- silane compound that can be used in combination with the epoxy group-containing trimethoxysilane compound include tetramethoxysilane, tetraethoxysilane, methyltrimethoxysilane, methinoretriethoxysilane, and dimethylenoresimethoxy.
- Silane dimethylenoletoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, diphenyldimethoxysilane, diphenolegetoxysilane, hexinotrimethoxysilane, hexinotritriethoxysilane, decyltrimethoxysilane, (Meth) atalyloxypropyltriethoxysilane and the like.
- methoxy silane and (meth) talyloxy propyl trimethoxy silane are preferred, and hexyl trimethoxy silane and talyloxy propyl trimethoxy silane are more preferred. This is because the reaction rate with the surface of the silicon oxide nanoparticle is appropriate, and it tends not to cause gelation or cloudiness.
- the said silane compound may use only 1 type. You may use together 2 or more types by arbitrary combinations and ratios.
- the amount of the silane compound that can be used in combination with the (y) epoxy group-containing trimethoxysilane compound varies depending on the amount of the (y) epoxy group-containing trimethoxysilane compound, and the total amount thereof is Usually 5% by weight or more, preferably 20% by weight or more, more preferably 50% by weight or more, and usually 300% by weight or less, preferably 200% by weight or less, more preferably 100% by weight or more with respect to the silicon oxide nanoparticles. Use only weight percent or less.
- the reaction temperature for the hydrolysis is usually 20 ° C or higher, preferably 40 ° C or higher, and usually 90 ° C or lower, preferably 80 ° C or lower. If the reaction temperature is too high, gelation may occur easily. If the reaction temperature is too low, the reaction rate may become slow.
- the reaction time is usually 30 minutes or more, preferably 90 minutes or more, and usually 48 hours or less, preferably 24 hours or less. is there. If the reaction time is too long, gelation may occur easily. If the reaction time is too short, the reaction may not proceed sufficiently.
- the reaction between the surface of the silicon oxide nanoparticles and (y) the epoxy group-containing trimethoxysilane compound and other silane compounds is usually 20 ° C or higher, preferably 40 ° C or higher, and usually 9 It is carried out at 0 ° C or lower, preferably 80 ° C or lower. If the reaction temperature is too high, gelation may occur easily. If the reaction temperature is too low, the reaction may not proceed sufficiently.
- the reaction time is usually 30 minutes or longer, preferably 90 minutes or longer, and usually 48 hours or shorter, preferably 24 hours or shorter. If the reaction time is too long, gelation may occur easily. If the reaction time is too short, the progress of the reaction may be insufficient.
- One of these (C) compounds containing at least one epoxy group in the molecule may be used alone, or two or more may be used in any combination and in any ratio.
- the radiation curable composition for optical recording media of the present invention can use (C) a urethane (meth) acrylate compound directly containing an epoxy group as a compound containing (C) one or more epoxy groups. . Specifically, compounds obtained by introducing an epoxy group into all the compounds exemplified as the (A) urethane (meth) acrylate compound can be used.
- any method can be used as long as the effects of the present invention are not significantly limited.
- a method of reacting (A) a urethane (meth) acrylate compound, a silicate oligomer, and (y) an epoxy group-containing trimethoxysilane compound will be described.
- silicate oligomer and (y) the epoxy group-containing trimethoxysilane compound are the same as those described in the above (a. (C) a compound containing one or more epoxy groups in the molecule). Available.
- the order of the reaction of (A) urethane (meth) acrylate compound, silicate oligomer, and (y) epoxy group-containing trimethoxysilane compound is arbitrary as long as the effect of the present invention is not limited. Reacts by mixing these compounds in one step.
- a polyisocyanate compound is reacted with a polyol compound containing triol.
- a urethane prepolymer having a triol compound bonded to the terminal is synthesized.
- the polyol compound other than triol is charged before the triol and reacted with the isocyanate group of the isocyanate compound first.
- the reaction is usually carried out at 40 ° C or higher, preferably 60 ° C or higher, and usually 80 ° C or lower, preferably 70 ° C or lower. If the reaction temperature is too high, the exotherm may become severe, and if it is too low, the reaction may be slow.
- the reaction time is usually 60 minutes or longer, preferably 120 minutes or longer, and usually 6 hours or shorter, preferably 4 hours or shorter. If the reaction time is too long, the color may deteriorate due to heat deterioration, and if it is too short, the reaction may become insufficient.
- the urethane prepolymer obtained is reacted with a polyisocyanate compound and a (X) isocyanate group-containing trialkoxysilane compound such as isocyanate propyltriethoxysilane to give a trialkoxy.
- a prepolymer having a silane side chain is obtained.
- the reaction is usually carried out at 40 ° C or higher, preferably 60 ° C or higher, and usually 80 ° C or lower, preferably 70 ° C or lower. If the reaction temperature is too high, the exotherm may become severe, and if it is too low, the reaction may be slow.
- the reaction time is usually 60 minutes or longer, preferably 120 minutes or longer, and usually 6 hours or shorter, preferably 4 hours or shorter. If the reaction time is too long, heat deterioration and coloring may occur, and if it is too short, the reaction may become insufficient.
- the obtained prepolymer is reacted with a hydroxyl group-containing (meth) atalyloyl compound to obtain (A) urethane (meth) atalylate having a trialkoxysilane side chain.
- the reaction is usually carried out at 40 ° C or higher, preferably 60 ° C or higher, and usually 75 ° C or lower, preferably 70 ° C or lower. If the reaction temperature is too high, gelation may occur, and if the reaction temperature is too low, the progress of the reaction may be insufficient.
- the reaction time is usually 2 hours or longer, preferably 4 hours or longer, and usually 24 hours or shorter, preferably 12 hours or shorter. If the reaction time is too long, the color may deteriorate due to heat, and if it is too short, the reaction may become insufficient.
- the molecular weight of the compound containing one or more epoxy groups in the molecule is preferably 1000 or less, more preferably 700 or less, still more preferably 500 or less, and the lower limit is not limited. This is because if the molecular weight is too large, the viscosity increases and the viscosity of the radiation curable composition for optical recording media may increase too much.
- a compound containing at least one epoxy group in the molecule is preferably liquid at room temperature because of its excellent workability. Accordingly, the melting point is usually 25 ° C. or lower, preferably 15 ° C. or lower, more preferably 5 ° C. or lower, and although there is no lower limit, it is usually 50 ° C. or higher.
- the amount of the epoxy group in the compound containing at least one epoxy group in the molecule is not particularly limited when expressed in terms of an epoxy equivalent representing the molecular weight per epoxy group in the compound. However, it is usually 90 or more, and the upper limit is usually 500 or less, preferably 300 or less, more preferably 200 or less. If the epoxy equivalent is too large (that is, the amount of epoxy groups in the compound is too small), the amount of epoxy compound required to give a sufficient effect will be too large, and radiation curing will not occur! / The volume fraction will be large. This is because it tends to decrease the mechanical strength too much.
- the content of the compound containing at least one (C) epoxy group in the molecule in the radiation-curable composition for optical recording media of the present invention is usually 0.1 wt% or more, preferably 0.3 wt%. % Or more, more preferably 0.5% by weight or more, and usually 10% by weight or less, preferably 5% by weight or less, more preferably 3% by weight or less. This is because if the content is too large, the volume fraction that does not cure by radiation becomes too large and the mechanical strength tends to decrease.
- the content of the compound containing at least one epoxy group (C) in the molecule in the radiation curable composition for optical recording media of the present invention is the radiation curable property for optical recording media of the present invention.
- all of the compounds containing an epoxy group ((A) urethan (meth) acrylate compound, (B) other acrylate compounds, or (D) polymerization initiator) When the total amount or a part of each contains an epoxy group, the epoxy group And the compound containing one or more epoxy groups in the molecule).
- the content of epoxy groups of the optical recording medium for the radiation-curable composition of the present invention is usually 1 X 10_ 6 mol / g or more, preferably 1 X 10_ 5 mol / g or more, more preferably It is a 2 X 1 0 5 mol / g or more, and usually 1 X 10- 3 mol / g or less, preferably less 5 X 10- 4 mol / g, still preferably are less 2 X 10_ 4 mol / g . If the amount is too small, the corrosion-inhibiting effect becomes insufficient, and if the amount is too large, the storage stability may deteriorate.
- the amount of halogen atoms in the radiation curable composition for optical recording media is extremely large, it is preferable to increase the epoxy group content accordingly.
- the radiation curable composition for optical recording media contains 500 ppm of chlorine atoms, at least the stoichiometric amount of epoxy groups (in this case 1.4 X 10_ 5 mol / g) should be included. It is preferable.
- the effects of the present invention can be obtained by incorporating one or more epoxy groups into the radiation-curable composition for optical recording media.
- the epoxy group improves the adhesion of the radiation curable composition for optical recording media to the substrate, and therefore, between the radiation curable composition for optical recording media and the substrate. It is presumed that corrosion is suppressed by mechanisms such as preventing concentration of water and water-soluble ions at the interface, and supplementing corrosive substances such as inorganic chlorides with epoxy groups.
- the content of the acid component 1. is below 0 X 10- 4 eq / g .
- the content of the acid component is preferably not more than the above value.
- the content of the acid component more preferably 0. 5 X 10_ 4 eq / g or less, more preferably 0. 2 X 10_ 4 eq / g or less, particularly preferably 0. 03 X 10_ 4 eq / g It is as follows. If the amount of acid component is too high, corrosion of the metal layer may occur.
- the water absorption rate of the radiation curable composition for optical recording media of the present invention increases and the dimensional stability of the adherend against humidity decreases.
- the tendency to promote chemical change becomes more prominent.
- the acid component is not particularly limited! /, But examples include inorganic acids such as hydrochloric acid and sulfuric acid, organic acids such as formic acid, acetic acid, acrylic acid, benzoic acid, succinic acid, and oxalic acid. Is mentioned.
- the amount of the acid component may be measured by a known method, for example, by KOH titration method or the like.
- the radiation-curable composition for optical recording media of the present invention may contain an auxiliary component such as an additive, if necessary, as long as the produced cured product does not deviate significantly from the object of the present invention.
- auxiliary ingredients include stabilizers such as antioxidants, heat stabilizers, or light absorbers; glass fibers, glass beads, silica, alumina, zinc oxide, titanium oxide, My strength, talc, kaolin, metal Fibers, metal powders and other fillers; carbon materials such as carbon fibers, carbon black, graphite, carbon nanotubes, fullerenes such as C
- inorganic filler components are collectively referred to as inorganic filler components.
- Modifiers such as antistatic agents, plasticizers, release agents, antifoaming agents, leveling agents, anti-settling agents, surfactants, thixotropy imparting agents; coloring pigments, dyes, hue control agents, etc.
- Agents Monomers and / or oligomers thereof, or curing agents, catalysts, curing accelerators and the like necessary for the synthesis of inorganic components.
- the content of these auxiliary components is not limited as long as the produced cured product does not significantly depart from the object of the present invention, but is usually 20% by weight or less, preferably 10% by weight of the radiation curable composition for optical recording media. % By weight or less, more preferably 5% by weight or less.
- auxiliary components may be used alone, or two or more thereof may be used in any combination and in any ratio.
- silica refers to silicon oxide in general, and it does not matter whether the ratio of silicon and oxygen is crystalline or amorphous.
- the silica particles include industrially produced silica particles dispersed in a solvent, or powdered silica particles; induction of raw material force such as alkoxysilane; synthesized silica particles; I can do it.
- Silica particles that are dispersed in a solvent or silica particles that are derived and synthesized from a raw material such as alkoxysilane are preferred.
- the number average particle diameter of the silica particles is an arbitrary force, preferably 0.5 nm or more, more preferably 1 nm or more, preferably 50 nm or less, more preferably 40 nm or less, and further preferably. It is 30 nm or less, particularly preferably 15 nm or less, and particularly preferably 12 nm or less.
- the number average particle size is preferably ultrafine particles. However, if the number average particle size is too small, the cohesiveness of the ultrafine particles is extremely increased, and the transparency and mechanical strength of the cured product tend to be extremely decreased. This is because the characteristics due to the tendency to become inconspicuous.
- the number average particle diameter of the silica particles can be measured by morphological observation using a TEM (transmission electron microscope) or the like.
- Compound containing epoxy group> (a. Compound containing at least one epoxy group in the molecule) also have the same average particle. It is preferable.
- the radiation curable composition for optical recording media of the present invention comprises: (A) urethane (meth) acrylate compound, and (B) other acrylate compound, (D) polymerization initiator and auxiliary Each component compound is prepared by stirring and mixing uniformly while blocking radiation. However, (A) the total amount of urethane (meth) acrylate compound, or the force that part of it contains an epoxy group, and a compound containing one or more epoxy groups in the molecule are further mixed. Similarly, (B) the other acrylate compound, (D) the polymerization initiator and the auxiliary component may all contain an epoxy group or a part thereof.
- the stirring conditions at that time are not particularly limited, but the following ranges are preferable.
- the stirring speed is usually lOOrpm or more, preferably 300rpm or more, and usually lOOOrpm or less. This is because the stirring efficiency is good and foam entrainment is suppressed.
- the stirring time is usually 10 seconds or longer, preferably 3 hours or longer, and usually 24 hours or shorter. This is because of the stirring efficiency.
- the stirring temperature is usually room temperature, but it is heated to 90 ° C or lower, preferably 70 ° C or lower. Do it! / This is to lower the viscosity and increase the efficiency.
- each compound is not particularly limited, but it is preferable to add a high-viscosity liquid component and / or solid component to a low-viscosity liquid component and stir, and (D) a polymerization initiator. Are preferably mixed at the end.
- the viscosity may be measured with an E-type viscometer, a B-type viscometer, a vibration type viscometer, or the like.
- the viscosity can be adjusted by adjusting the molecular weight and amount of (A) urethane (meth) acrylate compound and (B) other acrylate compound, mixing diluent, and mixing solvent. , Mixing of thickeners and mixing of rheology control agents, etc. Among them, adjustment of the amount of (A) urethane (meth) acrylate compound and (B) other acrylate compounds is particularly preferable. .
- the radiation-curable composition for optical recording media of the present invention preferably contains substantially no solvent. This is to prevent bubbles from remaining and hindering reading and writing of information. “Substantially free of solvent” means that the content of organic solvent with low volatility or so-called low boiling point is very low! /, States! ⁇ In radiation curable composition for optical recording media It is preferable that the solvent content is usually 5% by weight or less, more preferably 3% by weight or less, particularly preferably 1% by weight or less, and particularly preferably 0.1% by weight or less. In simple terms, the odor of the organic solvent is not observed!
- the cured product of the radiation curable composition for optical recording media is radiation (active energy ray It is obtained by so-called “radiation curing” in which a polymerization reaction is started by irradiating a strand.
- radiation curing in which a polymerization reaction is started by irradiating a strand.
- known polymerization types such as radical polymerization, cation polymerization, cationic polymerization, and coordination polymerization can be used.
- a particularly preferable polymerization mode is radical polymerization. The reason for this is not clear, but it is presumed to be due to the homogeneity of the product due to the initiation of the polymerization reaction proceeding homogeneously and in a short time within the polymerization system.
- the radiation mentioned above refers to electromagnetic waves (gamma rays, X-rays, ultraviolet rays, visible rays that act on the polymerization initiator (D) to generate chemical species that start the polymerization reaction by initiating the required polymerization reaction.
- Examples of radiation preferably used in the present invention are preferably ultraviolet rays, visible rays, and electron beams because they can use energy and a general-purpose light source, and particularly preferably ultraviolet rays and electron beams.
- UV rays When ultraviolet rays are used as radiation, a method of using a photo radical generator that generates radicals by ultraviolet rays (see (D) polymerization initiator examples) as the (D) polymerization initiator is preferred. At this time, you may use a sensitizer together as needed.
- the wavelength of the ultraviolet rays is usually 200 nm or more, preferably 240 nm or more, and usually 400 nm or less, preferably 350 nm or less.
- a device for irradiating ultraviolet rays a known device such as a high-pressure mercury lamp, a metal halide lamp, or an ultraviolet lamp having a structure for generating ultraviolet rays by a microwave can be preferably used.
- the output of the apparatus is usually 10 W / cm or more, preferably 30 W / cm or more, and usually 200 W / cm or less, preferably 180 W / cm or less.
- the apparatus is usually 5 cm or more, preferably Is preferably 30 cm or more, and usually 80 cm or less, preferably 60 cm or less, to reduce light degradation, thermal degradation, thermal deformation, etc. of the irradiated object.
- the radiation-curable composition for optical recording media of the present invention can be cured with an electron beam, and a cured product having excellent mechanical properties, particularly tensile elongation properties, can be obtained.
- an electron beam its light source and irradiation device are expensive, but (D) the use of a polymerization initiator can be omitted, and it is not subject to polymerization inhibition by oxygen, and therefore has a surface hardness. Is advantageous.
- An electron beam irradiation apparatus used for electron beam irradiation is not particularly limited, and examples thereof include a curtain type, an area beam type, a broad beam type, and a Nord beam type.
- the acceleration voltage during electron beam irradiation is usually 10 kV or more, preferably lOOkV or more, and usually lOOOkV or less, preferably 200 kV or less.
- the irradiation intensity typically 0. lj / cm 2 or more, preferably 0. 2j / cm 2 or more on, and usually 20j / cm 2 or less, preferably Loj / cm 2 or less, further preferably 5j / cm 2 or less, more preferably 3j / cm 2 or less, particularly preferably irradiated with 2j / cm 2 or less. If the irradiation intensity is within this range, it can be appropriately selected depending on the type of the radiation curable composition for optical recording media.
- the irradiation time is usually 1 second or longer, preferably 10 seconds or longer, and usually 3 hours or shorter, preferably 1 hour or shorter in terms of reaction acceleration and productivity. If the irradiation energy or irradiation time is extremely low! /, The polymerization may be incomplete, and the heat resistance and mechanical properties of the cured product may not be fully expressed. On the other hand, when it is extremely excessive, deterioration such as hue deterioration due to light such as yellowing may occur.
- the radiation may be applied in one step or in multiple steps.
- a diffusion radiation source in which radiation spreads in all directions is usually used.
- the irradiation of radiation is usually carried out with the radiation source fixed and allowed to stand in a state where the radiation-curable composition for optical recording media shaped in the mold is kept stationary or conveyed by a conveyor.
- the radiation curable composition for optical recording media is used as a coating liquid film on an appropriate substrate (for example, resin, metal, semiconductor, glass, paper, etc.), and the coating liquid film is cured by irradiating the coating with the radiation. It is also possible.
- the cured product of the radiation curable composition for optical recording media of the present invention usually exhibits insoluble and infusible properties in a solvent or the like, and has properties that are advantageous for use as an optical member even when it is thickened. It is preferable that the adhesiveness and the degree of surface hardening are excellent. Specifically, it exhibits low optical distortion (low birefringence), high light transmittance, mechanical strength, dimensional stability, high adhesion, high surface hardness, and a certain level of heat and humidity resistance. preferable. In addition, the curing shrinkage is small. Is preferred.
- the film thickness of the radiation-curable composition for optical recording media of the present invention is usually 10 m or more, preferably 20 ⁇ 111 or more, more preferably SO ⁇ m or more, and even more preferably 70 ⁇ 111. More preferably, it is 85 ⁇ m or more, usually 300 ⁇ m or less, preferably 130 ⁇ m or less, more preferably 115 in or less. This is because there is a good balance between the effect of garbage on the reading and writing of information and the transmittance.
- the light transmittance of the cured product of the radiation curable composition for optical recording media of the present invention is preferably a light transmittance power S per 0.1 mm of optical path length at a wavelength of 55 Onm, usually 80% or more. It is preferably 85% or more, more preferably 89% or more, and it is more preferable that the upper limit is close to 100%.
- the light transmittance of the cured product of the radiation curable composition for optical recording medium of the present invention is the wavelength.
- the light transmittance can be measured at room temperature by a known method using, for example, an HP8453 type ultraviolet / visible absorptiometer manufactured by Hewlett-Packard.
- each component constituting the radiation curable composition for optical recording media has a high light transmittance. It is preferable to use one. Further, those having a small amount of impurities such as colored substances and decomposed substances in each component are preferred. Moreover, the thing with little catalyst amount at the time of manufacture is preferable. These are effective in order not to reduce the light transmittance in the visible light region.
- an aliphatic or alicyclic skeleton that does not contain an aromatic ring in each component. These are effective in order not to lower the light transmittance in the ultraviolet region.
- the cured product of the radiation curable composition for optical recording media of the present invention has a surface hardness by a pencil hardness test in accordance with JIS K5400, which is usually 6B or more, preferably 4B or more, more preferably B or more, preferably Is greater than or equal to HB.
- JIS K5400 which is usually 6B or more, preferably 4B or more, more preferably B or more, preferably Is greater than or equal to HB.
- a protective film is formed on the surface on which a dielectric film, a recording film, a reflective film, etc. (hereinafter these layers are collectively referred to as a recording / reproducing functional layer) is formed on a substrate. If it is, there is no particular limitation.
- a film surface incident type optical recording medium into which recording and reproducing light enters from the protective layer side is preferable.
- the next generation high-density optical recording medium using Blue Laser is preferred!
- the next generation high-density optical recording medium is a substrate in which a dielectric film, a recording film, a reflective film, etc.
- An optical recording medium having a protective film formed on its surface which means an optical recording medium using laser light with a wavelength of 380 to 800 nm, preferably laser light with a wavelength of 450 to 350 nm.
- the recording / reproducing functional layer performs recording / erasing when the optical recording medium is a reproduction-only medium (ROM medium), when the optical recording medium is a write-once medium (Write Once medium) that can be recorded only once.
- ROM medium reproduction-only medium
- Write Once medium write-once medium
- the recording / playback functional layer is usually composed of a single layer containing a metal such as Al, Ag, or Au.
- the recording / reproducing functional layer is usually configured by providing a reflective layer containing a metal such as Al, Ag, Au, etc. and a recording layer containing an organic dye on the substrate in this order.
- the recording / reproducing functional layer usually includes a reflective layer containing a metal such as Al, Ag, and Au, a dielectric layer, a recording layer, and a dielectric layer in this order. Configured by providing on
- FIG. 1 is a cross-sectional view for explaining an example of the recording / reproducing functional layer 5 in the rewritable optical recording medium 10.
- the recording / reproducing functional layer 5 is provided so as to sandwich the reflective layer 51 formed of a metal material directly provided on the substrate 1, the recording layer 53 formed of a phase change material, and the recording layer 53 from above and below. And two dielectric layers 52 and 54 formed.
- the protective layer 3 is made of a cured product obtained by spin-coating the radiation-curable composition for optical recording media of the present invention and radiation-curing the composition.
- the protective layer 3 is provided in contact with the recording / reproducing functional layer 5 and is a planar ring. It has a shape.
- Protective layer 3 is a material that can transmit laser light used for recording and reproduction. It is formed by the material.
- the transmittance of the protective layer 3 is usually 80% or more, preferably 85% or more, more preferably 89% or more, at the wavelength of light used for recording and reproduction. Within such a range, loss due to absorption of recording / reproducing light can be minimized.
- the transmittance is particularly preferably 100%, but is usually 99% or less in view of the performance of the material used.
- Such a protective layer 3 provides a recording layer 53 formed on the substrate 1 that is sufficiently transparent to laser light in the vicinity of the wavelength used for recording / reproducing of the optical disk, and prevents the recording layer 53 from water and dust. It is desirable to have a protective property.
- the surface hardness of the protective layer 3 is preferably B or higher according to the pencil hardness test according to JISK5400! If the hardness is too small, the surface tends to be damaged. Although there is no problem with the hardness itself being too high, the cured product tends to become brittle, and tends to cause cracks and peeling.
- the adhesion between the protective layer 3 and the recording / reproducing functional layer 5 is high. Furthermore, it is preferable to have higher adhesion over time. Recording and playback functions of the protective layer 3 after 100 hours, more preferably 200 hours in an environment of 80 ° C and 85% RH (Relative Humidity).
- the ratio of the area of contact with layer 5 is preferably 50% or more of the initial contact area, more preferably 80% or more, and particularly preferably 100%.
- the thickness of the protective layer 3 is usually 10 m or more, preferably 20 m or more, more preferably 30 m or more, further preferably 70 m or more, particularly preferably 85 m or more, and usually 300 mm or less. , Preferably 130 m or less, more preferably 115 m or less. If the film thickness is within such a range, the influence of dust scratches attached to the surface of the protective layer 3 can be reduced, and the thickness sufficient to protect the recording / reproducing functional layer 5 from moisture etc. of the outside air. can do. Moreover, it is possible to easily form a uniform film thickness by a general coating method used in spin coating.
- the protective layer 3 is preferably formed with a uniform film thickness in a range that covers the recording / reproducing functional layer 5.
- a hard coat layer may be further formed on the protective layer 3.
- the hard coat layer may be, for example, a radiation curable monomer or / and oligomer having a functional group selected from the group consisting of (meth) atalyloyl group, bur group, and mercapto group, fluorine compound, silicone compound, and the above-mentioned Silica particles, etc.
- the cured product has a light transmittance at a wavelength of 550 nm of 80% or more, a contact angle with water of 90 ° or more, and a surface hardness of B, more preferably HB or more. It is good to form so that it becomes.
- the hard coat layer preferably has antifouling properties such as a high contact angle with water.
- the hard coat layer having antifouling property eg, a coating material
- a material for the hard coat layer having antifouling property e.g, a coating material
- it contains a silicone compound or a fluorine compound as an antifouling property imparting agent, and also contains a polyfunctional (meth) acrylate monomer or an epoxy compound.
- a radiation curable composition containing inorganic components such as inorganic nanoparticles is preferably used.
- Examples of the stain resistance imparting agent include polymers having a silicone skeleton such as an organopolysiloxane skeleton, radiation curable compounds having a silicone skeleton and an acrylic group, and silicones such as a silicone surfactant.
- examples thereof include a compound, a polymer containing a fluorine atom, a radiation curable compound having a fluorine atom and an acrylic group, and a fluorine compound such as a fluorine-based surfactant.
- a high recording density medium such as an optical recording medium using a blue laser has a small laser spot diameter and is sensitive to dirt such as fingerprints, dust, and dust.
- dirt including organic matter such as fingerprints
- it if the dirt adheres to the surface on the laser beam incident side of the medium, it will cause serious effects such as recording / playback errors due to laser, and it will be difficult to remove them. It is preferable to keep in mind.
- the hard coat material having antifouling property it is preferable to use a hard coat material having a contamination resistance imparting agent containing polysiloxane or a fluorine-containing group and having radiation curability. ,. Among them, it is preferable to use a hard coat material in which radiation resistance is imparted to the stain resistance imparting agent. Specific examples include the following.
- the radiation curable hard coat materials (1) to (3) will be described in detail below.
- the radiation curable hard coat material (1) comprises 0.01 to 10 parts by weight of a polysiloxane compound and / or fluorine compound having a radiation curable group at the end, and 3 or more in one molecule. 88 parts by weight or more and 99.5 parts by weight or less of a (meth) atelate composition containing 30% by weight or more of (meth) attalylate having (meth) attaroyl group, and 0.1 part by weight of a photopolymerization initiator. Those containing 10 parts by weight or less (total 100 parts by weight) as essential components are preferred. Furthermore, the radiation curable hard coat material (1) may contain an organic solvent capable of dissolving these essential components in order to adjust the viscosity, the coating property and the like, if necessary.
- Examples of the polysiloxane compound having a radiation curable group at the terminal include a polysiloxane having an allyloyl group or a methacryloyl group at one terminal or both terminals. Of these, polydimethylsiloxane having a number average molecular weight of 500 or more and 10,000 or less and having (meth) attalyloyl groups at both ends is preferable.
- the polysiloxane compound having a radiation curable group at the terminal may be used alone or in combination of two or more in any combination and ratio.
- Examples of the fluorine compound having a radiation curable group at the terminal include, for example, a perfluoroalkyl compound, a perfluoroalkylene compound, a perfluoroalkylene having one or both ends of an acryloyl group or a methacryloyl group.
- the fluorine compound having a radiation curable group at the terminal may be used alone or in combination of two or more in any combination and ratio.
- Examples of (meth) atalylate having three or more (meth) atalyloyl groups in one molecule include, for example, pentaerythritol retoraria acrylate, pentaerythritol tetraacrylate, dipentaerythritol pentaacrylate, Dipentaerythritol hexaacrylate, ditrimethylolpropane tetraacrylate, polyester acrylate, polyfunctional urethane acrylate, polyepoxy acrylate, polyethoxy acrylate, and triethoxy acrylate with an isocyanurate ring (for example, manufactured by Toagosei Co., Ltd.) Alonix M315, M313, etc.).
- (meth) atalylate having 3 or more (meth) atalyloyl groups in one molecule may be used alone, or two or more may be used in any combination and ratio, .
- a (meth) acrylate composition containing 30% by weight or more of (meth) acrylate having 3 or more (meth) attalyloyl groups in one molecule is one or two in one molecule. It may contain (meth) acrylates with one (meth) acryloyl group.
- Examples of the (meth) acrylate compound having one (meth) attaroyl group in one molecule include alkyl (meth) acrylates such as butyl methacrylate and stearyl acrylate; cyclohexyl.
- Illustrative examples include alicyclic (meth) atalylates such as attalylate and isobornylmetatalylate; heteroatom-containing cyclic structure-containing acrylates such as tetrahydrofurfuryl acrylate.
- (meth) acrylate having an aromatic ring, (meth) acrylate having a hydroxy group, (meth) acrylate having a polyalkylene glycol chain can be preferably used.
- the (meth) acrylate compound having one (meth) attalyloyl group in one molecule may be used alone or in combination of two or more in any combination and ratio.
- Examples of the (meth) acrylate compound having two (meth) atalyloyl groups in one molecule include di (meth) acrylates of aliphatic or cycloaliphatic diols such as hexanediol ditalylate. Examples thereof include polyalkylene glycol di (meth) acrylate, such as a rate, polyethylene glycol diatalate, polyester diatalate, polyurethane diatalate, and bifunctional epoxide tantalate.
- only one kind of (meth) atalylate compound having two (meth) atalyloyl groups in one molecule may be used. Two or more kinds may be used in any combination and ratio. Yo! /
- Examples of the photopolymerization initiator include alkylphenone type compounds ( ⁇ -hydroxyacetophenone type, ⁇ aminoacetophenone type, benzyl ketal type), acylphosphine oxide type compounds, oxime esters. Compounds, oxyphenyl acetates, benzoin ethers, phenyl esters, ketone / amine compounds, and the like. Specific examples include benzoin methyl ether, benzoin ethyl ether, benzoin propyl ether, benzoin butyl ether, diethoxyacetophenone, benzyldimethyl ketal, 2-hydroxy-2-methylpropiophenone, 1-hydroxycyclohexylphenyl.
- Ketone benzophenone, 2, 4, 6 trimethylbenzoindiphenylphosphine oxide, 2-methyl- [4 (methylthio) phenyl] -2-morphinoline Rononone, 2 benzyl-1,2 dimethylamino 1- (4 morpholinophenyl) 1 butane 1one, methyl benzoylformate, Michler's ketone, N, N isamyl dimethylaminobenzoate, 2 black mouth thixanthone, 2, 4 Tilthioxanthone and the like.
- Only one type of photopolymerization initiator may be used. Two or more types of photopolymerization initiators may be used in any combination and ratio.
- Examples of the solvent include alcohols (ethanol, isopropanol, isobutanol, etc.), ketones (acetone, methyl ethyl ketone, methyl isobutyl ketone, etc.), alcohols having an alkoxy group (methoxyethanol, ethylene glycol).
- the solvent may use only 1 type, and may use 2 or more types together by arbitrary combinations and ratios. It is preferable to appropriately select a solvent that is excellent in compatibility with other components and / or excellent in uniform dispersibility.
- the radiation curable hard coat material (2) comprises 0.1 to 20 parts by weight of a polymer containing a radiation curable group and a polysiloxane unit and / or an organic fluorine group unit.
- a photopolymerization initiator comprising 79.8 parts by weight or more and 99.5 parts by weight or less of a (meth) acrylate composition containing at least 30% by weight of a (meth) acrylate having 3 or more (meth) atallyloyl groups.
- 0.1 to 10 parts by weight total 100 parts by weight as an essential component.
- the radiation curable hard coat material (2) includes organic (inorganic) fine particles so as to contain inorganic (oxide) fine particles such as silica within a range not exceeding 50% by weight of the total (meth) acrylate composition. It may contain a hybrid type (meth) acrylate. Furthermore, the radiation curable hard coat material (2) may contain an organic solvent capable of dissolving these essential components in order to adjust the viscosity, coating property, and the like, if necessary.
- Examples of the polymer containing a radiation curable group and a polysiloxane unit and / or an organic fluorine group unit include dimercaptosilicon and / or perfluoroalkyl (meth) acrylate and epoxy group-containing (meta ) Copolymerized with attalylate as an essential component. Examples thereof include a polymer obtained by adding a carboxylic acid having a (meth) atalyloyl group to an epoxy group of a polymer.
- the polymer containing the radiation curable group and the polysiloxane unit and / or the organic fluorine group unit may be used alone or in combination of two or more in any combination and ratio! /.
- the radiation-curable hard coat material (3) comprises 0.01 to 10 parts by weight of a polysiloxane compound and / or fluorine compound having a radiation-curable group in the side chain, and 3 per molecule. 88 parts by weight or more and 99.5 parts by weight or less of a (meth) acrylate composition containing 30% by weight or more of the above (meth) atallyloyl group-containing (meth) atalylate, and 0.1% by weight of a photopolymerization initiator. Those containing at least 10 parts by weight and not more than 100 parts by weight (total 100 parts by weight) are preferred.
- the radiation-curable hard coat material (3) contains organic (inorganic) hybrid so as to contain inorganic (oxide) fine particles such as silica within a range not exceeding 50% by weight of the total (meth) acrylate composition. It may contain a (meth) arylate of the type. Furthermore, the radiation curable hard coat material (3) may contain an organic solvent capable of dissolving these essential components in order to adjust the viscosity, coating property and the like, if necessary.
- the polysiloxane compound having a radiation curable group in the side chain and / or the fluorine compound includes, for example, a poly (dimethylsiloxane) containing 2 or more (meth) attalyloyl groups per molecule in the side chain.
- polysiloxane compounds having side-chain radiation-curable groups and / or fluorine Only one type of compound may be used. Two or more types may be used in any combination and ratio. Combination'll be! /,.
- the radiation used for curing the hard coat material is not particularly limited, and can be the same as, for example, the radiation used in forming the protective layer.
- a back layer (not shown) may be formed on the surface of the substrate 1 opposite to the recording / reproducing functional layer 5.
- the back layer preferably has an elastic modulus at 25 ° C. within a predetermined range. Specifically, the upper limit is 2000 MPa or less, preferably 1500 MPa or less.
- the lower limit is not limited, but is preferably higher than the elastic modulus of the protective layer. If the elastic modulus of the back layer is too high, the optical recording medium may be deformed excessively with respect to temperature changes.
- the elastic modulus can be obtained by setting a test speed of 1 mm / min or the like by a tensile test using a Tensilon tensile tester or the like.
- the upper limit of the film thickness of the back layer is usually 50 m or less, preferably 30 m or less, more preferably 20 111 or less, and further preferably 15 in or less. If the film thickness of the back layer is too large, the optical recording media are likely to come into contact with each other when the optical recording media are stacked and stored, and the appearance may be damaged, and errors may occur during reading of the recording. .
- the material for the back layer is not particularly limited, and generally known materials can be used for the back layer. For example, it is preferable to selectively use a force capable of using the same material as that of the protective layer described above, in particular, one having the above elastic modulus.
- a radiation curable composition is preferably used as such a material.
- the resin contained in the radiation curable composition used for forming the back layer include molecular terminals such as alkyl (meth) acrylate, urethane (meth) acrylate, polyester (meth) acrylate, and side chains. And a resin composition containing as a main component a compound having an unsaturated bond.
- urethane (meth) acrylate is preferred from the viewpoint that the back layer can be formed without curing shrinkage or without solvent.
- Specific examples of urethane (meth) acrylate include (A) urethane (meth) acrylate for use in forming a protective layer, for example. Only one type of back layer material may be used. Two or more types may be used in any combination and ratio.
- Examples of the component used by mixing with the main component include monofunctional (meth) acrylate.
- Monofunctional acrylates include, for example, (meth) acrylamides such as N, N-dimethyl (meth) acrylamide, hydroxyethyl (meth) acrylate, hydroxypropyl And cycloaliphatic (meth) acrylates such as rate, isobornyl (meth) acrylate, cyclohexyl (meth) acrylate and (meth) acrylate having a tricyclodecane skeleton.
- alicyclic structures such as isobornyl (meth) acrylate, cyclopentane (meth) acrylate, dicyclopentagenyl (meth) acrylate, etc., because the elastic modulus of the back layer can be increased.
- Monofunctional acrylates containing are preferred.
- only 1 type may be used for a monofunctional atollate. Two or more types may be used together in arbitrary combinations and ratios.
- the content of urethane (meth) acrylate in the radiation curable composition used to form the back layer is 100% by weight of the total content of urethane (meth) acrylate and monofunctional (meth) acrylate. It is preferably 1% by weight or more, more preferably 10% by weight or more, still more preferably 30% by weight or more, and preferably 70% by weight or less, more preferably 60% by weight or less.
- polyfunctional (meth) acrylate in the radiation-curable composition used for forming the back layer, can be used within a range not causing a decrease in elastic modulus.
- examples of the polyfunctional (meth) acrylate include the same force S as the polyfunctional (meth) acrylate used for forming the protective layer.
- the polyfunctional (meth) acrylate may be used alone or in combination of two or more in any combination and ratio.
- a polymerization reaction that proceeds by radiation for example, active energy rays, ultraviolet rays, electron beams, etc.
- radiation for example, active energy rays, ultraviolet rays, electron beams, etc.
- You may contain a polymerization initiator, an auxiliary component, etc.
- Specific examples include (D) polymerization initiators and auxiliary components used in the radiation curable composition used for forming the protective layer.
- the polymerization initiator and auxiliary component only one type may be used, or two or more types may be used in any combination and ratio.
- the coating method of the radiation curable composition used for forming the back layer is not particularly limited, and may be a general coating method such as a spin coating method.
- the radiation used for curing the radiation curable composition used for the formation of the back layer is not particularly limited.
- the radiation S can be the same as the radiation used for forming the protective layer.
- a thin film such as an inorganic layer is formed on the surface of the substrate 1 opposite to the recording / reproducing functional layer 5 for the purpose of suppressing deformation of the optical recording medium with respect to temperature change. It's formed by the technique, but it's good! /, But it's formed from the cost aspect!
- optical recording medium obtained as described above may be used as a single plate or may be used as a laminate of two or more. If necessary, a hub may be attached and assembled into the cartridge.
- the cured product of the radiation curable composition for optical recording media of the present invention can obtain an effect of preventing corrosion of the metal layer of the optical recording medium without impairing mechanical properties and storage stability. Furthermore, as a result of reducing the corrosion of the metal layer, an optical recording medium with improved reliability is obtained when the optical recording medium is left in a high-temperature / high-humidity environment for a long time and the error rate is lowered. I can do things.
- This radiation curable composition for optical recording media was applied to a polycarbonate disc with a diameter of 120 mm and a thickness of 1.1 mm with an Ag sputtering film (lOOnm thickness) using a spin coater, and the irradiation intensity with a high-pressure mercury lamp lj Cured by irradiating with ultraviolet rays at / cm 2 to form a cured coating film with a film thickness of 1 OO ⁇ m, and the laminate was kept in a constant temperature and humidity tester set at 80 ° C and 85% RH for 100 hours. The degree of corrosion when placed was evaluated. The results are shown in Table 1.
- Example 1 bisphenol A type epoxy resin (828US; manufactured by Japan Epoxy Resin Co., Ltd.) 0.5 g instead of bisphenol A type epoxy resin (828US; manufactured by Japan Epoxy Resin Co., Ltd.) 2. Except for mixing Og, The same operation as in Example 1 was performed. The results are shown in Table 1.
- Example 1 bisphenol A type epoxy resin (828 US; Japan Epoxy Residue) The same procedure as in Example 1 was conducted except that 0.5 g of bisphenol F-type epoxy resin (807; manufactured by Japan Epoxy Resin Co., Ltd.) was mixed instead of 0.5 g. The results are shown in Table 1.
- Example 1 was carried out in the same manner as Example 1 except that the urethane acrylate composition liquid B was used instead of the urethane acrylate composition liquid A. The results are shown in Table 1.
- Example 1 it carried out like Example 1 except having mixed 20 g of bisphenol A type epoxy resins instead of 0.5 g of bisphenol A type epoxy resins. The results are shown in Table 1.
- Example 1 The same procedure as in Example 1 was performed except that bisphenol A type epoxy resin (828 US; manufactured by Japan Epoxy Resin Co., Ltd.) was used in Example 1. The results are shown in Table 1.
- Quantification was performed by combustion absorption ion chromatogram analysis.
- composition film is formed on a 10 cm x 10 cm x 3 mm thick glass plate by a spin coater, and remains on the surface when irradiated with 300 mj / cm 2 of ultraviolet light from a height of 15 cm with a high-pressure mercury lamp. It evaluated by the presence or absence of the tack to do.
- the index finger wearing rubber gloves was touched lightly on the three power points on the application surface to evaluate whether the rubber gloves remained.
- the viscosity of the radiation curable composition for optical recording media was measured using an E-type viscometer in a constant temperature and humidity chamber at 25 ° C. and 65% RH.
- a radiation curable composition for optical recording media is applied onto a glass plate of lOcm X IOcm, 3 mm thick by a spin coater, and cured by irradiating with a high-pressure mercury lamp with an irradiation intensity of lj / cm 2.
- the optical path length at a wavelength of 550 nm is 0.1 per mm. The rate was measured.
- the radiation curable composition for optical recording media was quantified by titration using KOH.
- the cured product of the radiation curable composition for optical recording media of the present invention has a degree of corrosion! /, Regardless of the type of compound containing an epoxy group.
- the numerical value was small and excellent. Furthermore, compared to the case of using bisphenol F with bisphenol nore A, the numerical value of the corrosion degree was excellent.
- the cured product of the radiation curable composition for optical recording media of the present invention has a degree of corrosion, regardless of the type of urethane (meth) acrylate compound. The number of small was excellent.
- Example 1 In comparison between Example 1, 2 and Example 5, it forces the content of the epoxy group is 1 X 10- 6 mol / g ⁇ l X 10- 3 mol / g S, value of the corrosion degree small It was excellent.
- the present invention can be used in any industrial field, it is particularly suitable for use in a radiation-curable composition for an optical recording medium protective layer and an optical recording medium using the same. it can.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Macromonomer-Based Addition Polymer (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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EP07850720A EP2096637A4 (en) | 2006-12-19 | 2007-12-17 | RADIATION HARDENING COMPOSITION FOR OPTICAL RECORDING MEDIUM AND OPTICAL RECORDING MEDIUM |
US12/518,892 US20100016520A1 (en) | 2006-12-19 | 2007-12-17 | Radiation-curable composition for optical recording medium, and optical recording medium |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2006-341707 | 2006-12-19 | ||
JP2006341707 | 2006-12-19 | ||
JP2007-222293 | 2007-08-29 | ||
JP2007222293A JP2008176901A (ja) | 2006-12-19 | 2007-08-29 | 光記録媒体用放射線硬化性組成物、及び光記録媒体 |
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WO2008075647A1 true WO2008075647A1 (ja) | 2008-06-26 |
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PCT/JP2007/074232 WO2008075647A1 (ja) | 2006-12-19 | 2007-12-17 | 光記録媒体用放射線硬化性組成物、及び光記録媒体 |
Country Status (5)
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US (1) | US20100016520A1 (ja) |
EP (1) | EP2096637A4 (ja) |
JP (1) | JP2008176901A (ja) |
TW (1) | TW200836190A (ja) |
WO (1) | WO2008075647A1 (ja) |
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JP4638954B2 (ja) * | 2008-09-16 | 2011-02-23 | 日本ペイント株式会社 | 耐指紋性光硬化性組成物および耐指紋性コーティング層が設けられた塗装物 |
JP5811834B2 (ja) * | 2011-12-27 | 2015-11-11 | 東亞合成株式会社 | 光学フィルム又は光学シート、偏光子保護フィルム及び偏光板 |
EP3658636A4 (en) * | 2017-07-28 | 2021-05-05 | Rohit Kumar Gupta | SUSTAINABLE COMPOSITION AND PROCESS FOR MANUFACTURING A DIRT-REPELLENT TEXTILE ARTICLE |
JP7073814B2 (ja) * | 2018-03-16 | 2022-05-24 | 三菱ケミカル株式会社 | 活性エネルギー線硬化性樹脂組成物、およびそれを用いたコーティング剤、ならびにシート |
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JP2004359779A (ja) * | 2003-06-03 | 2004-12-24 | Cemedine Co Ltd | 光ディスク用接着剤組成物 |
JP2006152273A (ja) * | 2004-11-08 | 2006-06-15 | Mitsubishi Chemicals Corp | 放射線硬化性組成物及びその硬化物、並びにその積層体 |
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JP3176430B2 (ja) * | 1992-03-30 | 2001-06-18 | ジェイエスアール株式会社 | 光学的立体造形用樹脂組成物 |
TW430672B (en) * | 1997-07-03 | 2001-04-21 | Sumitomo Chemical Co | A photo-curing resin composition for DVD |
US6437059B1 (en) * | 1999-02-11 | 2002-08-20 | Reichhold, Inc. | Composition of epoxy, urethane polyacrylate and polyamine |
JP2002231725A (ja) * | 2001-01-30 | 2002-08-16 | Semiconductor Energy Lab Co Ltd | 半導体装置及びその作製方法 |
WO2002081526A1 (en) * | 2001-04-06 | 2002-10-17 | Borden Chemical, Inc. | Optical fiber assembly using reactive moiety di-terminated diphenylmethane polyol oligomer, and methods for making and using same |
WO2002094904A1 (en) * | 2001-05-17 | 2002-11-28 | Nippon Kayaku Kabushiki Kaisha | Photosensitive resin, photosensitive resin compositions containing the same and cured articles of the compositions |
TW200422336A (en) * | 2002-11-08 | 2004-11-01 | Mitsubishi Chem Corp | Radiation curable resin composition and cured product thereof |
US20070231527A1 (en) * | 2004-11-11 | 2007-10-04 | Mitsubishi Kagaku Media Co., Ltd. | Optical Recording Medium and Method for Producing Same |
JP2006216456A (ja) * | 2005-02-04 | 2006-08-17 | Seiko Instruments Inc | 有機電子デバイスの製造方法 |
WO2008001855A1 (fr) * | 2006-06-30 | 2008-01-03 | Mitsubishi Plastics, Inc. | Composition durcissable par rayonnement de haute énergie, film transparent fabriqué à partir de la composition et disque optique utilisant le film |
JP5586300B2 (ja) * | 2010-03-31 | 2014-09-10 | デクセリアルズ株式会社 | 機能性積層体及び機能性構造体 |
-
2007
- 2007-08-29 JP JP2007222293A patent/JP2008176901A/ja active Pending
- 2007-12-17 EP EP07850720A patent/EP2096637A4/en not_active Withdrawn
- 2007-12-17 US US12/518,892 patent/US20100016520A1/en not_active Abandoned
- 2007-12-17 WO PCT/JP2007/074232 patent/WO2008075647A1/ja active Application Filing
- 2007-12-19 TW TW096148678A patent/TW200836190A/zh unknown
Patent Citations (2)
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JP2004359779A (ja) * | 2003-06-03 | 2004-12-24 | Cemedine Co Ltd | 光ディスク用接着剤組成物 |
JP2006152273A (ja) * | 2004-11-08 | 2006-06-15 | Mitsubishi Chemicals Corp | 放射線硬化性組成物及びその硬化物、並びにその積層体 |
Non-Patent Citations (1)
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See also references of EP2096637A4 * |
Also Published As
Publication number | Publication date |
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EP2096637A1 (en) | 2009-09-02 |
TW200836190A (en) | 2008-09-01 |
JP2008176901A (ja) | 2008-07-31 |
EP2096637A4 (en) | 2011-01-19 |
US20100016520A1 (en) | 2010-01-21 |
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