WO2011122197A1 - 活性エネルギー線硬化型樹脂組成物、その硬化物及びフィルム - Google Patents
活性エネルギー線硬化型樹脂組成物、その硬化物及びフィルム Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/08—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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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
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
- C08F2/50—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
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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
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
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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
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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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/28—Treatment by wave energy or particle radiation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
Definitions
- the present invention particularly relates to an active energy ray-curable resin composition that can be preferably used for forming a hard coat layer for protecting the touch panel surface.
- compositions for obtaining a hard coat layer in which fingerprint marks are not easily noticeable and attached fingerprint marks are easy to wipe off for example, polypropylene glycol having a weight average molecular weight (Mw) of 2,000, isophorone diisocyanate, and penta
- Mw weight average molecular weight
- penta A photocurable resin composition containing urethane acrylate having one acryloyl group at one end, obtained by reacting 1 mol each of erythritol triacrylate, is known (for example, see Patent Document 1).
- the coating film made of the photocurable composition disclosed in Patent Document 1 has a surface hardness equivalent to that of a normal hard coat, both the conspicuousness of fingerprints and the ease of wiping off attached fingerprint traces are obtained.
- the problem to be solved by the present invention is that the cured coating film has a high level of fingerprint resistance and surface hardness, and even when the environment during curing is in an air atmosphere, the performance can be expressed.
- An active energy ray-curable resin composition, a cured product obtained by curing the composition, and a film having a cured layer of the composition are provided.
- the present inventors have determined that polyalkylene glycol having a weight average molecular weight (Mw) in the range of 500 to 5,000 and a diol having an alkylene thioether structure in the molecular structure as essential raw material components.
- Mw weight average molecular weight
- a hard coat layer is obtained in which fingerprint traces are not noticeable even when cured in an air atmosphere, and the attached fingerprints are easy to wipe off.
- the present inventors have found that a cured layer obtained by curing the composition exhibits high hardness and completed the present invention.
- the present invention relates to a polyalkylene glycol (a1) having a weight average molecular weight (Mw) in the range of 500 to 5,000, a diol (a2) having an alkylene thioether structure in the molecular structure, and a molecular weight of 500 or less.
- the weight average molecular weight (Mw) obtained by reacting a certain diisocyanate (a3) with (meth) acrylate (a4) having one hydroxyl group in the molecular structure as an essential raw material component is 10,000 to 100,000.
- An active energy ray-curable resin composition characterized by containing a urethane (meth) acrylate (A) and a polyfunctional (meth) acrylate (B) in the above range.
- the present invention also provides a cured product obtained by curing the active energy ray-curable resin composition.
- the present invention provides a film characterized by having a cured layer formed by curing the active energy ray-curable resin composition on a film-like substrate.
- the active energy ray-curable resin composition of the present invention By using the active energy ray-curable resin composition of the present invention, it is possible to form a hard coat layer having a high surface hardness and less noticeable fingerprint traces and easy to wipe off the adhered fingerprints. Therefore, the active energy ray-curable resin composition of the present invention is suitable as a composition for forming a hard coat layer of an article to which fingerprint marks such as a touch panel display are easily attached.
- the urethane (meth) acrylate (A) used in the present invention comprises a polyalkylene glycol (a1) having a weight average molecular weight (Mw) in the range of 500 to 5,000 and a diol (a2 having an alkylene thioether structure in the molecular structure). ), Diisocyanate (a3) having a molecular weight in the range of 100 to 500, and (meth) acrylate (a4) having one hydroxyl group in the molecular structure are reacted as essential raw material components. .
- the polyalkylene glycol (a1) which is a raw material component of the urethane (meth) acrylate (A) has a weight average molecular weight (Mw) in the range of 500 to 5,000.
- Mw weight average molecular weight
- the compatibility with the fingerprint component is excellent
- the compatibility with the polyfunctional (meth) acrylate (B) is good, and a coating film with higher hardness can be obtained.
- Those having a weight average molecular weight (MW) in the range of 700 to 4,500 are preferred, and those having a weight average molecular weight (Mw) in the range of 1,000 to 4,000 are more preferred.
- the weight average molecular weight (Mw) and the number average molecular weight (Mn) are values measured by gel permeation chromatography (GPC) under the following conditions.
- Measuring device HLC-8220GPC manufactured by Tosoh Corporation
- Detector RI (differential refractometer)
- Data processing Multi-station GPC-8020model II manufactured by Tosoh Corporation Measurement conditions: Column temperature 40 ° C Solvent Tetrahydrofuran Flow rate 0.35 ml / min standard; Monodisperse polystyrene sample; 0.2 wt% tetrahydrofuran solution in terms of resin solid content filtered through a microfilter (100 ⁇ l)
- the number of polyalkyleneoxy structural units derived from the polyalkylene glycol (a1) contained in the urethane (meth) acrylate (A) varies depending on the weight average molecular weight (Mw) of the polyalkylene glycol used, but it is easy to adapt to the fingerprint property.
- Mw weight average molecular weight
- the range of 1 to 20 is preferable, and 2 to 10 A range is more preferred.
- the weight average molecular weight (Mw) of the polyalkylene glycol (a1) is in the range of 1,000 to 4,000, it is preferably 2 to 6.
- polyalkylene glycol (a1) examples include polyethylene glycol, polypropylene glycol, polytetramethylene glycol, polybutylene glycol, and poly-3-chloropropylene glycol. These may be used alone or in combination of two or more. Among these, polypropylene glycol and polybutylene glycol are preferable, and polypropylene glycol is more preferable because a hard coat layer in which fingerprint marks are hardly noticeable is obtained.
- the diol (a2) having an alkylene thioether structure in the molecular structure as a raw material component of the urethane (meth) acrylate (A), any curing condition in a nitrogen atmosphere or an air atmosphere is used. Even so, it is possible to obtain a cured coating film excellent in ease of fingerprint wiping.
- the diol (a2) having an alkylene thioether structure in the molecular structure used in the present invention is, for example, 2,2′-thiodiethanol, 3-thia-1,6-hexanediol, 1- (2-hydroxyethylthio)- 2-propanol, 4-methyl-2-thiapentane-1,5-diol, 1-chloro-3- (2-hydroxyethylthio) -2-propanol, 3,3′-thiobis (1-propanol), 2, 2'-thiobis (1-propanol), 1,1'-thiobis (2-propanol), 5-methyl-3-thiahexane-1,6-diol, 3-oxa-6-thiaoctane-1,8-diol, etc.
- 2,2 ′-(methylenebisthio) diethanol 1,2-bis (2-hydroxyethylthio) ethane, 3,3′-dithiobis (1-propanol), 1,1′-dithiobis (2-propanol), Bis (2-hydroxy-1-methylethyl) persulfide, 2,2 ′-[oxybis (methylenethio)] bisethanol, 3,9-dithia-6-oxanonane-1,9-diol, 2,2 ′-( Trimethylenebisthio) diethanol, 2,2 ′-(tetramethylenebisthio) diethanol, 4,4′-dithiobis (1-butanol), 1,1 ′-(ethylenebisthio) bis (2-propanol), 3 -[2- (3-hydroxypropylsulfanyl) ethylsulfanyl] propan-1-ol, 2,2 ′-[oxybis (ethylenethio)] Ethanol, 2,2 ′-[(2-
- the compound represented by the following general formula (1) or general formula (2) is preferable in that the balance between curability of the coating film in an air atmosphere and fingerprint resistance is excellent.
- R1 and R2 are each an alkyl group having 1 to 4 carbon atoms or a halogenated alkyl group.
- l, m and n are each 0 or 1
- R1, R2, R3, R4, R5 and R6 are each an alkyl group or halogenated alkyl group having 1 to 4 carbon atoms. Is a sulfur atom or an oxygen atom, and more than half of X contained in the compound is a sulfur atom.
- the compound represented by the general formula (1) examples include 2,2′-thiodiethanol, 3-thia-1,6-hexanediol, 1- (2-hydroxyethylthio) -2-propanol, for example. 4-methyl-2-thiapentane-1,5-diol, 1-chloro-3- (2-hydroxyethylthio) -2-propanol, 3,3′-thiobis (1-propanol), 2,2′- Molecular structures such as thiobis (1-propanol), 1,1'-thiobis (2-propanol), 5-methyl-3-thiahexane-1,6-diol, 3-oxa-6-thiaoctane-1,8-diol Compounds having one sulfur atom in them; 2,2 ′-(methylenebisthio) diethanol, 1,2-bis (2-hydroxyethylthio) ethane, 2,2 ′-[oxybis (meth) Nthio)] bisethanol,
- Diisocyanate (a3) used in the present invention has a molecular weight of 500 or less. When the molecular weight exceeds 500, fingerprint resistance of the coating film is not sufficiently exhibited. Among these, those having a molecular weight in the range of 150 to 450 are more preferable from the viewpoint of excellent fingerprint resistance of the coating film. Examples of such diisocyanates include aromatic diisocyanates and aliphatic diisocyanates.
- aromatic diisocyanate examples include tolylene diisocyanate (TDI), diphenylmethane diisocyanate (MDI), p-phenylene diisocyanate, naphthalene diisocyanate, xylylene diisocyanate (XDI), and tetramethylxylylene diisocyanate (TMXDI).
- TDI tolylene diisocyanate
- MDI diphenylmethane diisocyanate
- p-phenylene diisocyanate p-phenylene diisocyanate
- XDI naphthalene diisocyanate
- XDI xylylene diisocyanate
- TMXDI tetramethylxylylene diisocyanate
- the aliphatic diisocyanate is a chain diisocyanate such as hexamethylene diisocyanate (HMDI), 2,2,4-trimethylhexane diisocyanate and lysine diisocyanate; 1,4-cyclohexane diisocyanate (CDI), isophorone diisocyanate (IPDI), 4,4 '-Dicyclohexylmethane diisocyanate (hydrogenated MDI), methylcyclohexane diisocyanate, isopropylidene dicyclohexyl-4,4'-diisocyanate, 1,3-diisocyanatomethylcyclohexane (hydrogenated XDI), 4-methyl-1,3-cyclohexyl Examples thereof include cycloaliphatic diisocyanates such as silylene isocyanate (hydrogenated TDI) and norbornane diisocyanate.
- HMDI hexamethylene diis
- the diisocyanate (a3) may be used alone or in combination of two or more.
- aromatic diisocyanate or alicyclic diisocyanate is preferable in that the obtained urethane (meth) acrylate (A) is a compound having excellent compatibility with the polyfunctional (meth) acrylate (B), tolylene diisocyanate, 4, More preferred are 4'-dicyclohexylmethane diisocyanate and isophorone diisocyanate.
- the (meth) acrylate (a4) having one hydroxyl group in the molecular structure used in the present invention is, for example, hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, hydroxybutyl (meth) acrylate, 2-hydroxy- Hydroxy (meth) acrylate having one (meth) acryloyl group such as 3-phenoxypropyl (meth) acrylate; glycerin di (meth) acrylate, pentaerythritol tri (meth) acrylate, ditrimethylolpropane tri (meth) acrylate, di Examples thereof include hydroxy (meth) acrylate having two or more (meth) acryloyl groups such as pentaerythritol penta (meth) acrylate and sorbitol penta (meth) acrylate. These may be used alone or in combination of two or more.
- hydroxy (meth) acrylate having one (meth) acryloyl group is preferable, since a hard coat layer in which the attached fingerprint trace is not noticeable and the attached fingerprint can be easily wiped off is preferable, and hydroxyethyl (meth) An acrylate and a hydroxypropyl (meth) acrylate are more preferable.
- the method for producing the urethane (meth) acrylate (A) used in the present invention includes, for example, a polyalkylene glycol (a1) having a weight average molecular weight in the range of 500 to 5,000 and the alkylene thioether structure in the molecular structure.
- a1 polyalkylene glycol
- the method by the process (process 2) with which (meth) acrylate (a4) which has one hydroxyl group is made to react is mentioned.
- the production method of the isocyanate group-containing urethane prepolymer will be described in detail with respect to the step 1.
- the polyalkylene glycol (a1), the diol (a2) having an alkylene thioether structure in the molecular structure, and the diisocyanate (a3) Can be reacted in the presence of 500 ppm of tin (II) octoate as a urethanization catalyst and 300 ppm of the polymerization inhibitor methoquinone at a temperature of 70 to 120 ° C.
- the molar ratio [(a1) / (a2)] of the polyalkylene glycol (a1) and the diol (a2) having an alkylene thioether structure in the molecular structure is cured in an air atmosphere.
- a hard coat layer that can easily wipe off the attached fingerprint is obtained, and therefore, the range of [1.0 / 0.2] to [1.0 / 5.0] is preferable.
- a range of 0 / 0.5] to [1.0 / 2.0] is more preferable.
- the number of moles of hydroxyl groups in the polyalkylene glycol (a1) is F 1
- the number of moles of hydroxyl groups in the diol (a2) having an alkylene thioether structure in the molecular structure is F 2
- the ratio of the number of moles and the isocyanate groups of the hydroxyl groups contained in the system [(F 1 + F 2) / F 3 ] is [1/1 .05] to [1/3], preferably [1 / 1.1] to [1/2].
- the isocyanate group-containing urethane prepolymer and the (meth) acrylate (a4) having one hydroxyl group in the molecular structure are mixed with octoate tin (II) which is a urethanization catalyst.
- the ratio of the number of moles F NCO of isocyanate groups in the isocyanate group-containing urethane prepolymer to the number of moles F OH of hydroxyl groups in the (meth) acrylate having a hydroxyl group in the molecular structure [F NCO / F OH ] is preferably in the range of [1/1] to [1 / 1.2], more preferably in the range of [1 / 1.01] to [1 / 1.05].
- the urethane (meth) acrylate (A) thus obtained is a resin excellent in all of compatibility with the fingerprint property, the hardness of the coating film, and the compatibility with the polyfunctional (meth) acrylate (B). Since the composition is obtained, the weight average molecular weight (Mw) is in the range of 10,000 to 100,000. Among these, the range of 20,000 to 80,000 is more preferable from the viewpoint of obtaining a coating film having an excellent balance between the performance of both the conspicuousness of attached fingerprints and ease of wiping.
- the polyfunctional (meth) acrylate (B) used in the present invention includes a monomer-type polyfunctional (meth) acrylate (b1) having a molecular weight of less than 600 and an oligomer-type polyfunctional (meth) acrylate having a molecular weight in the range of 600 to 3,000.
- a functional (meth) acrylate (b2) is mentioned.
- Examples of monomer-type polyfunctional (meth) acrylate (b1) having a molecular weight of less than 600 include butanediol di (meth) acrylate, hexanediol di (meth) acrylate, ethoxylated hexanediol di (meth) acrylate, and propoxylation Hexanediol di (meth) acrylate, diethylene glycol di (meth) acrylate, polyethylene glycol di (meth) acrylate, polypropylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, ethoxylated neopentyl glycol di (meth) acrylate , Di (meth) acrylates such as hydroxypivalic acid neopentyl glycol di (meth) acrylate;
- (meth) acrylates in which a part of the various polyfunctional (meth) acrylates described above is substituted with an alkyl group or ⁇ -caprolactone can be used.
- a coating film having higher hardness can be obtained, and therefore, a tetrafunctional or higher functional (meth) acrylate is preferable.
- Dipentaerythritol pentaacrylate, dipentaerythritol hexaacrylate Is more preferable.
- a mixture (b56) of dipentaerythritol pentaacrylate (b5) and dipentaerythritol hexaacrylate (b6) is particularly preferred from the viewpoint of excellent surface hardness and curl resistance of the coating film.
- the mass ratio [(b5) / (b6)] of erythritol pentaacrylate (b5) to dipentaerythritol hexaacrylate (b6) is preferably in the range of 3/7 to 7/3. A range of 5 is more preferable.
- the oligomer-type polyfunctional (meth) acrylate (b2) has a weight average molecular weight (Mw) in the range of 600 to 3,000, so that a coating film having excellent surface hardness and curl resistance can be obtained. It is done.
- the oligomer type polyfunctional (meth) acrylate (b2) include polyester (meth) acrylate, urethane (meth) acrylate, epoxy (meth) acrylate, and acrylic (meth) acrylate.
- These polyfunctional (meth) acrylates (B) may be used alone or in combination of two or more.
- polyfunctional urethane (meth) acrylate (b4) is preferable in that a coating film having higher hardness can be obtained.
- the polyfunctional urethane (meth) acrylate (b4) used as the oligomer type polyfunctional (meth) acrylate (b2) is, for example, a polyisocyanate and a polyfunctional (meth) acrylate having a hydroxyl group in the molecular structure.
- the ratio [F NCO / F OH ] of the number of moles F NCO of isocyanate groups in the isocyanate to the number of moles F OH of hydroxyl groups in the (meth) acrylate having a hydroxyl group in the molecular structure is [1/1] to [ It can be obtained by reacting to be in the range of [1 / 1.2].
- Examples of the polyisocyanate include various diisocyanates listed as the diisocyanate (a3).
- Examples of the polyfunctional (meth) acrylate having a hydroxyl group in the molecular structure include various (meth) acrylates listed as (meth) acrylate (a4) having one hydroxyl group in the molecular structure. .
- urethane (meth) acrylate obtained by reacting hexamethylene diisocyanate and pentaerythritol tri (meth) acrylate is preferable because a coating film having higher hardness can be obtained.
- a hard coat layer having high curability, high hardness and excellent transparency can be obtained. Therefore, a monomer type polyfunctional (with a molecular weight of less than 600) ( It is preferable to use a combination of (meth) acrylate (b1) and an oligomer-type polyfunctional (meth) acrylate having a molecular weight in the range of 600 to 3,000. Furthermore, dipentaerythritol pentaacrylate (b5) and dipentaerythritol hexaacrylate (b6) are used as the monomer-type polyfunctional (meth) acrylate (b1) in terms of excellent hardness, transparency and curl resistance of the coating film.
- urethane (meth) acrylate (b4) is preferably used as the oligomer-type polyfunctional (meth) acrylate, and the mass ratio [(b56) / (b4)] is [ It is preferably in the range of 1/2] to [2 to 1].
- the urethane (meth) acrylate (A) and the polyfunctional (meth) acrylate (B) have a mass ratio [(A) / (B)] of [0.1 / 99.9] to [15]. / 85] to be included.
- Urethane (meth) acrylate (A) and polyfunctional (meth) acrylate (B) may be contained in a mass ratio [(A) / (B)] in the range of 0.1 / 99.9 to 10/90. Preferably, it is contained in the range of 0.1 / 99 to 5/95 by mass ratio [(A) / (B)].
- the active energy ray-curable resin composition of the present invention may be mixed with an organic solvent as long as the effects of the present invention are not impaired.
- an organic solvent those having a boiling point of 50 to 200 ° C. are usually used to obtain a resin composition for an active energy ray-curable coating and an active energy ray-curable paint that are excellent in workability during coating and drying before and after curing.
- alcohol solvents such as methanol, isopropyl alcohol, n-butanol and isobutanol; methyl acetate, ethyl acetate, butyl acetate, ethylene glycol monoethyl ether, ethylene glycol monoethyl ether acetate, ethylene glycol monobutyl ether
- ester solvents such as acetate
- ketone solvents such as acetone, methyl ethyl ketone, and methyl isobutyl ketone
- aromatic solvents such as toluene and xylene, or mixtures thereof.
- the active energy ray-curable resin composition obtained in the present invention contains an organic solvent
- the active energy ray-curable resin composition for coating is applied to the support and the active energy ray-curable resin composition is applied on the support.
- a hot air dryer or the like can be used as a means for removing the organic solvent.
- the amount of the organic solvent used is not particularly limited, but is usually in the range where the solid content concentration of the paint is 10 to 70% by weight.
- a photopolymerization initiator can be added to the active energy ray-curable resin composition of the present invention depending on the purpose.
- Various photopolymerization initiators can be used.
- the photoinitiator include compounds that generate radicals by hydrogen abstraction, such as benzophenone, benzyl, Michler ketone, thioxanthone, and anthraquinone. These compounds are generally used in combination with tertiary amines such as methylamine, diethanolamine, N-methyldiethanolamine, and tributylamine.
- examples of the photopolymerization initiator include compounds of a type that generates radicals by intramolecular cleavage. Specific examples include benzoin, dialkoxyacetophenone, acyloxime ester, benzyl ketal, hydroxyalkylphenone, halogenoketone and the like.
- polymerization inhibitors such as hydroquinone, benzoquinone, toluhydronoquinone, para tertiary butyl catechol, etc. can be added in combination with a photopolymerization initiator.
- various leveling agents such as fluorine-based, silicone-based, and hydrocarbon-based additives are added in an amount that does not impair fingerprint resistance (0.005 to 1% by mass). Can be added.
- inorganic fine particles such as silica gel (particle size 5 to 100 nm) can be added in an addition amount (0.1 to 50% by mass) within a range not impairing transparency.
- the cured product of the present invention is obtained by curing the energy beam curable resin composition.
- active energy rays include electron beams, ultraviolet rays, and gamma rays. Irradiation conditions are determined according to the composition of the active energy ray-curable coating material used to obtain the protective layer, but in the case of ultraviolet irradiation, irradiation is usually performed so that the integrated light amount is 10 to 5,000 mj / cm 2. It is preferable to irradiate so that the integrated light quantity is 50 to 1,000 mj / cm 2 .
- the dose is preferably 1 to 5 Mrad.
- ultraviolet curing is preferable because it is easy to handle.
- the film of the present invention has a cured layer formed by curing the active energy ray-curable resin composition on a film-like substrate.
- film-like substrate examples include films made from polyethylene, polypropylene, triacetyl cellulose, polyethylene terephthalate, vinyl chloride, polycarbonate, and the like.
- Examples of the coating means for forming the layer of the active energy ray-curable resin composition on the film substrate include coating methods such as gravure coating, roll coating, spray coating, lip coating, and comma coating And printing methods such as gravure printing and screen printing.
- coating it is preferable to coat so that the thickness of the cured protective layer is 0.1 to 400 ⁇ m, and it is more preferable that the thickness is 1 to 50 ⁇ m.
- the organic solvent is usually removed after forming the active energy ray-curable resin composition layer on the base film.
- the organic solvent may be left standing to wait for volatilization or may be dried using a dryer or the like.
- the temperature at which the organic solvent is removed is usually 70 to
- the drying time at 130 ° C. is preferably in the range of 10 seconds to 10 minutes.
- the coating layer is irradiated with active energy rays to obtain the film of the present invention.
- the weight average molecular weight (Mw) and the number average molecular weight (Mn) were measured using gel permeation chromatography (GPC) under the following conditions.
- Measuring device HLC-8220GPC manufactured by Tosoh Corporation Column: TSK-GUARDCOLUMN SuperHZ-L manufactured by Tosoh Corporation + Tosoh Corporation TSK-GEL SuperHZM-M ⁇ 4 Detector: RI (differential refractometer)
- Data processing Multi-station GPC-8020model II manufactured by Tosoh Corporation Measurement conditions: Column temperature 40 ° C Solvent Tetrahydrofuran Flow rate 0.35 ml / min Standard; Monodisperse polystyrene Sample; Filtered 0.2% by weight tetrahydrofuran solution in terms of resin solids with a microfilter (100 ⁇ l)
- the temperature in the system was adjusted to 50 ° C. Thereafter, 261 g (3 mol) of toluene diisocyanate was added in three portions while paying attention to heat generation, and the mixture was reacted at 80 ° C. for 1 hour. Further, 260 g (2 mol) of hydroxypropyl acrylate was added, and the reaction was carried out at 80 ° C. while blowing air, until the isocyanate group completely disappeared, and urethane acrylate (A1) having a weight average molecular weight (Mw) of 24,000 was obtained.
- Mw weight average molecular weight
- Polyalkylene glycol 1 Polypropylene glycol having a weight average molecular weight of 2,000
- Polyalkylene glycol 2 Polypropylene glycol having a weight average molecular weight of 1,000
- Polyalkylene glycol 3 Polypropylene glycol having a weight average molecular weight of 4,000
- Polyalkylene glycol 4 Polypropylene glycol having a weight average molecular weight of 700
- Synthesis Examples 8 to 10 [Synthesis of urethane (meth) acrylate (a) for comparison] Comparative urethane acrylates (a1) to (a3) were obtained in the same manner as in Synthesis Example 1 except that the synthesis was carried out using the raw materials and blending amounts shown in Table 2. The respective values of weight average molecular weight (Mw) and number average molecular weight (Mn) are shown in Table 2.
- Polyalkylene glycol 5 Polypropylene glycol having a weight average molecular weight of 400
- Polyalkylene glycol 6 Polypropylene glycol having a weight average molecular weight of 8,000
- Polyalkylene glycol 7 Polypropylene glycol having a weight average molecular weight of 2,000
- urethane acrylate (B1) was 1,400.
- the acryloyl equivalent was 109 g / mol.
- Example 1 3 g of urethane acrylate (A1), 48.5 g of urethane acrylate (B1), 48.5 g of a mixture of dipentaerythritol pentaacrylate and dipentaerythritol hexaacrylate (weight ratio 40/60), 4 g of 1-hydroxycyclohexyl phenyl ketone, butyl acetate 104 g was mixed to obtain an active energy ray-curable composition (1) having a solid content of 50% by mass.
- a hard coat layer was formed on the film under the following conditions using the composition (1), and the difficulty of conspicuous adhesion of the fingerprint trace and the ease of wiping off the fingerprint trace was evaluated according to the following criteria.
- the conspicuousness of the attached fingerprint trace and the ease of wiping off the attached fingerprint trace were evaluated in each of the initial stage in which the hard coat layer was formed and the stage after 20 times of attaching and removing the fingerprint trace.
- the removal of the attached fingerprint trace was performed by an evaluation method for ease of wiping off the fingerprint trace described later.
- the acryloyl equivalent of 48.5 g of urethane acrylate (B1) and 48.5 g of a mixture of dipentaerythritol pentaacrylate and dipentaerythritol hexaacrylate (weight ratio 40/60) was 104 g / mol.
- composition (1) A PET film (125 ⁇ m) was coated using a bar coater so that the dry film thickness was 5 ⁇ m. After the solvent was dried at 70 ° C. for 5 minutes, ultraviolet rays were irradiated with a high-pressure mercury lamp (80 W / cm) so that the irradiation amount was 500 mJ / cm 2 to obtain a hard coat layer. The ultraviolet irradiation was performed in an air atmosphere or a nitrogen atmosphere.
- the inconspicuousness of fingerprint marks was quantitatively evaluated by the viewing angle.
- the viewing angle refers to an angle at which the fingerprint trace starts to be confirmed by gradually lowering the viewing angle with respect to the fingerprint trace attached to the hard coat layer from 90 degrees. The smaller the viewing angle, the better the fingerprint marks are less noticeable.
- Pencil hardness was measured according to JIS K5600-5-4. The hardness was measured five times for each hardness, and the hardness that the cured coating film had was not damaged more than four times.
- Examples 2 to 9 and Comparative Examples 1 to 3 Active energy ray curable resin compositions 2 to 9 and comparative active energy ray curable resin compositions 1 ′ to 3 ′ were prepared in the same manner as in Example 1 except that the formulations shown in Tables 3 and 4 were used. Prepared. The same evaluation as in Example 1 was performed, and the results are shown in Tables 5-7.
- Multifunctional acrylate (B2): Mixture of dipentaerythritol pentaacrylate and dipentaerythritol hexaacrylate (weight ratio 40/60)
- the acryloyl group equivalent of the mixture of polyfunctional acrylate (B1) and polyfunctional acrylate (B2) is 104 g / mol.
- Photoinitiator 1-hydroxycyclohexyl phenyl ketone
- Diluent normal butyl acetate
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Abstract
Description
本発明で用いるウレタン(メタ)アクリレート(A)は、重量平均分子量(Mw)が500~5,000の範囲であるポリアルキレングリコール(a1)と、アルキレンチオエーテル構造を分子構造内に有するジオール(a2)と、分子量が100~500の範囲であるジイソシアネート(a3)と、分子構造中にヒドロキシル基を一つ有する(メタ)アクリレート(a4)とを必須の原料成分として反応させて得られるものである。
測定装置 ;東ソー株式会社製 HLC-8220GPC
カラム ;東ソー株式会社製 TSK-GUARDCOLUMN SuperHZ-L
+東ソー株式会社製 TSK-GEL SuperHZM-M×4
検出器 ;RI(示差屈折計)
データ処理;東ソー株式会社製 マルチステーションGPC-8020modelII
測定条件 ;カラム温度 40℃
溶媒 テトラヒドロフラン
流速 0.35ml/分
標準 ;単分散ポリスチレン
試料 ;樹脂固形分換算で0.2重量%のテトラヒドロフラン溶液をマイクロフィルターでろ過したもの(100μl)
カラム ;東ソー株式会社製 TSK-GUARDCOLUMN SuperHZ-L
+東ソー株式会社製 TSK-GEL SuperHZM-M×4
検出器 ;RI(示差屈折計)
データ処理;東ソー株式会社製 マルチステーションGPC-8020modelII
測定条件 ;カラム温度 40℃
溶媒 テトラヒドロフラン
流速 0.35ml/分
標準 ;単分散ポリスチレン
試料 ;樹脂固形分換算で0.2重量%のテトラヒドロフラン溶液をマイクロフィルターでろ過したもの(100μl)
重量平均分子量(Mw)2,000のポリプロピレングリコールを4,000g(2モル)、1,2-ビス(2ヒドロキシエチルチオ)エタン91g(1モル)をフラスコに仕込み、さらに触媒としてオクタン酸スズ(II)とオクタン酸亜鉛(II)をそれぞれ200ppm、重合禁止剤としてジブチルヒドロキシトルエン3,000ppm、メトキノン300ppm、溶剤として酢酸ノルマルブチルをフラスコ内の固形分が80%となる量を加えよく混合し、系内の温度を50℃に調整した。その後、発熱に注意しながらトルエンジイソシアネート261g(3モル)を3分割して加え、80℃で1時間反応させた。更に、ヒドロキシプロピルアクリレート260g(2モル)を加え、空気を吹き込みながら80度でイソシアネート基が完全に消失するまで反応させ、重量平均分子量(Mw)24,000のウレタンアクリレート(A1)を得た。
第一表に示す原料及び配合量で合成を行う以外は合成例1と同様にしてウレタンアクリレート(A2)~(A7)を得た。それぞれの重量平均分子量(Mw)の値を第一表に示す。
ポリアルキレングリコール1:重量平均分子量が2,000のポリプロピレングリコール
ポリアルキレングリコール2:重量平均分子量が1,000のポリプロピレングリコール
ポリアルキレングリコール3:重量平均分子量が4,000のポリプロピレングリコール
ポリアルキレングリコール4:重量平均分子量が700のポリプロピレングリコール
第二表に示す原料及び配合量で合成を行う以外は合成例1と同様にして比較対照用ウレタンアクリレート(a1)~(a3)を得た。それぞれの重量平均分子量(Mw)と数平均分子量(Mn)の値を第二表に示す。
ポリアルキレングリコール5:重量平均分子量が400のポリプロピレングリコール
ポリアルキレングリコール6:重量平均分子量が8,000のポリプロピレングリコール
ポリアルキレングリコール7:重量平均分子量が2,000のポリプロピレングリコール
ペンタエリスリトールトリアクリレートとペンタエリスリトールテトラアクリレートの混合物(重量比60/40)535.5gをフラスコに仕込んだ。触媒としてオクタン酸スズ(II)とオクタン酸亜鉛(II)をそれぞれ200ppm、酸化防止剤としてジブチルヒドロキシトルエン3,000ppm、重合禁止剤としてメトキノン300ppmとなるようにフラスコに加え、更に酢酸ノルマルブチルを固形分が80%となるように混合し、系内の温度を50℃に調整した。
ウレタンアクリレート(A1)3g、ウレタンアクリレート(B1)48.5g、ジペンタエリスリトールペンタアクリレートとジペンタエリスリトールヘキサアクリレートの混合物(重量比40/60)48.5g、1-ヒドロキシシクロヘキシルフェニルケトン4g、酢酸ブチル104gを混合し、固形分量が50質量%の活性エネルギー線硬化型組成物(1)を得た。組成物(1)を用いて下記条件にてフィルム上にハードコート層を形成し、付着した指紋跡の目立ちにくさ及び付着した指紋跡の拭き取りやすさを下記基準に従って評価した。付着した指紋跡の目立ちにくさ及び付着した指紋跡の拭き取りやすさは、ハードコート層を形成した初期段階と指紋跡の付着と除去を20回繰り返した後の段階のそれぞれについて評価した。付着した指紋跡の除去は、後述する指紋跡の拭き取りやすさの評価方法で行った。尚、ウレタンアクリレート(B1)48.5g、ジペンタエリスリトールペンタアクリレートとジペンタエリスリトールヘキサアクリレートの混合物(重量比40/60)48.5gの混合物のアクリロイル当量は104g/molであった。
組成物(1)PETフィルム(125μm)に乾燥膜厚が5μmになるようにバーコーターを用いて塗工した。70℃で5分間溶剤を乾燥させた後、高圧水銀灯(80W/cm)で照射量が500mJ/cm2となるように紫外線を照射し、ハードコート層を得た。尚、紫外線の照射は空気雰囲気下もしくは窒素雰囲気下で行った。
指紋跡の目立ちにくさは視認角度で定量評価した。視認角度とは、ハードコート層に付着させた指紋跡に対する目視角度を90度から徐々に下げていき、指紋跡が確認され始める角度をいう。視認角度が小さいほど、指紋跡の目立ちにくさが良好である。
指紋跡の拭き取り易さは、指紋跡をハードコート層から除去する際のふき取り回数で評価した。具体的には、ハードコート層に付着させた指紋跡の上にティッシュペーパーを1Kg(5.7平方センチメートルあたり)で往復させ、付着した指紋跡が完全に見えなくなるまでの往復回数で定量評価した。この往復回数が少ないほど、指紋跡の拭取りやすさが良好である。
JIS K5600-5-4に準拠して鉛筆硬度測定を行った。1つの硬度につき5回測定を行い、4回以上傷がつかない硬度を硬化塗膜の有する硬度とした。
第三表及び第四表に示す配合で行う以外は実施例1と同様にして活性エネルギー線硬化型樹脂組成物2~9及び比較対照用活性エネルギー線硬化型樹脂組成物1’~3’を調製した。実施例1と同様の評価を行い、その結果を第五表~第七表に示す。
多官能アクリレート(B2):ジペンタエリスリトールペンタアクリレートとジペンタエリスリトールヘキサアクリレートの混合物(重量比40/60)
多官能アクリレート(B1)と多官能アクリレート(B2)の混合物のアクリロイル基当量は104g/mol
光開始剤:1-ヒドロキシシクロヘキシルフェニルケトン
希釈溶剤:酢酸ノルマルブチル
Claims (12)
- 重量平均分子量(Mw)が500~5,000の範囲であるポリアルキレングリコール(a1)と、アルキレンチオエーテル構造を分子構造内に有するジオール(a2)と、分子量が500以下であるジイソシアネート(a3)と、分子構造中にヒドロキシル基を一つ有する(メタ)アクリレート(a4)とを必須の原料成分として反応させて得られる重量平均分子量(Mw)が10,000~100,000の範囲であるウレタン(メタ)アクリレート(A)と、多官能(メタ)アクリレート(B)とを含有することを特徴とする活性エネルギー線硬化型樹脂組成物。
- 前記ポリアルキレングリコール(a1)がポリプロピレングリコールである請求項1記載の活性エネルギー線硬化型樹脂組成物。
- 前記アルキレンチオエーテル構造を分子構造内に有するジオール(a2)が、2,2’-チオビス(1-プロパノール)、1,2-ビス(2-ヒドロキシエチルチオ)エタン、2-[2-[2-(2-ヒドロキシエチルチオ)プロピルチオ]-1-メチルエチルチオ]エタノール、1-(2-[2-(2-ヒドロキシプロピルスルファニル)プロピルスルファニル]1-メチル-エチルスルファニル)プロパン-2-オールからなる群から選ばれる1種類以上の化合物である請求項1記載の活性エネルギー線硬化型樹脂組成物。
- 前記ウレタン(メタ)アクリレート(A)の原料中のポリアルキレングリコール(a1)とアルキレンチオエーテル構造を分子構造内に有するジオール(a2)との含有量のモル比〔(a1)/(a2)〕が1/0.2~1/5となる範囲である請求項1記載の活性エネルギー線硬化型樹脂組成物。
- 前記分子構造中にヒドロキシル基を一つ有する(メタ)アクリレート(a4)が、分子構造中にメタアクリロイル基を1つ有するモノヒドロキシモノ(メタ)アクリレートである請求項1記載の活性エネルギー線硬化型樹脂組成物。
- 前記ウレタン(メタ)アクリレート(A)と多官能(メタ)アクリレート(B)との質量比〔(A)/(B)〕が0.1/99.9~15/85の範囲である請求項1記載の活性エネルギー線硬化型樹脂組成物。
- 前記多官能(メタ)アクリレート(B)として、分子量が600未満であるモノマー型の多官能(メタ)アクリレート(b1)と分子量が600~3,000の範囲であるオリゴマー型多官能(メタ)アクリレート(b2)とを併用することを特徴とする請求項1記載の活性エネルギー線硬化型樹脂組成物。
- 前記分子量が600~3,000の範囲であるオリゴマー型多官能(メタ)アクリレート(b2)が多官能ウレタン(メタ)アクリレートである請求項8記載の活性エネルギー線硬化型樹脂組成物。
- 前記分子量が600未満であるモノマー型の多官能(メタ)アクリレート(b1)と分子量が600~3,000の範囲であるオリゴマー型多官能(メタ)アクリレート(b2)との質量比[(b1)/(b2)]が1/2~2/1の範囲である請求項8記載の活性エネルギー線硬化型樹脂組成物。
- 請求項1~10のいずれか1つに記載の活性エネルギー線硬化型樹脂組成物を硬化させてなることを特徴とする硬化物。
- 請求項1~10のいずれか1つに記載の活性エネルギー線硬化型樹脂組成物を硬化させてなる硬化層をフィルム状基材上に有することを特徴とするフィルム。
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| JP2009062423A (ja) * | 2007-09-05 | 2009-03-26 | Aica Kogyo Co Ltd | 活性エネルギー線硬化型ハードコート樹脂組成物及びハードコートフィルム |
| JP6084412B2 (ja) * | 2012-09-20 | 2017-02-22 | ヒューグルエレクトロニクス株式会社 | 基板ケース洗浄装置 |
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2011
- 2011-02-28 KR KR1020127015382A patent/KR101802215B1/ko not_active Expired - Fee Related
- 2011-02-28 WO PCT/JP2011/054475 patent/WO2011122197A1/ja not_active Ceased
- 2011-02-28 JP JP2011548501A patent/JP4998647B2/ja active Active
- 2011-02-28 CN CN201180017034.6A patent/CN102844346B/zh not_active Expired - Fee Related
- 2011-03-30 TW TW100110948A patent/TWI498339B/zh not_active IP Right Cessation
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| JPS61108619A (ja) * | 1984-11-01 | 1986-05-27 | Sanyo Kokusaku Pulp Co Ltd | 光硬化性樹脂組成物 |
| JPS6390525A (ja) * | 1986-10-03 | 1988-04-21 | Sumitomo Chem Co Ltd | 硬化性樹脂組成物 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI595016B (zh) * | 2012-01-17 | 2017-08-11 | 迪愛生股份有限公司 | 活性能量線硬化型水性樹脂組成物、活性能量線硬化型水性塗料、及以該塗料塗覆之物品 |
| JP2015528040A (ja) * | 2012-07-20 | 2015-09-24 | ビーエイエスエフ・ソシエタス・エウロパエアBasf Se | 速乾性放射線硬化性塗料組成物 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4998647B2 (ja) | 2012-08-15 |
| JPWO2011122197A1 (ja) | 2013-07-08 |
| CN102844346B (zh) | 2014-10-15 |
| TWI498339B (zh) | 2015-09-01 |
| KR20130028704A (ko) | 2013-03-19 |
| TW201211071A (en) | 2012-03-16 |
| KR101802215B1 (ko) | 2017-11-28 |
| CN102844346A (zh) | 2012-12-26 |
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