WO2006046698A1 - 活性エネルギー線硬化型インクジェット記録用インク - Google Patents
活性エネルギー線硬化型インクジェット記録用インク Download PDFInfo
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- WO2006046698A1 WO2006046698A1 PCT/JP2005/019902 JP2005019902W WO2006046698A1 WO 2006046698 A1 WO2006046698 A1 WO 2006046698A1 JP 2005019902 W JP2005019902 W JP 2005019902W WO 2006046698 A1 WO2006046698 A1 WO 2006046698A1
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- 239000011521 glass Substances 0.000 description 1
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- GWVMLCQWXVFZCN-UHFFFAOYSA-N isoindoline Chemical compound C1=CC=C2CNCC2=C1 GWVMLCQWXVFZCN-UHFFFAOYSA-N 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 125000000018 nitroso group Chemical group N(=O)* 0.000 description 1
- OTLDLKLSNZMTTA-UHFFFAOYSA-N octahydro-1h-4,7-methanoindene-1,5-diyldimethanol Chemical compound C1C2C3C(CO)CCC3C1C(CO)C2 OTLDLKLSNZMTTA-UHFFFAOYSA-N 0.000 description 1
- OEIJHBUUFURJLI-UHFFFAOYSA-N octane-1,8-diol Chemical compound OCCCCCCCCO OEIJHBUUFURJLI-UHFFFAOYSA-N 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 239000003505 polymerization initiator Substances 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- IZMJMCDDWKSTTK-UHFFFAOYSA-N quinoline yellow Chemical compound C1=CC=CC2=NC(C3C(C4=CC=CC=C4C3=O)=O)=CC=C21 IZMJMCDDWKSTTK-UHFFFAOYSA-N 0.000 description 1
- 239000013557 residual solvent Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- JOUDBUYBGJYFFP-FOCLMDBBSA-N thioindigo Chemical compound S\1C2=CC=CC=C2C(=O)C/1=C1/C(=O)C2=CC=CC=C2S1 JOUDBUYBGJYFFP-FOCLMDBBSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000004394 yellowing prevention Methods 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
Classifications
-
- 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
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/101—Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
-
- 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
-
- 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
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/38—Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes
Definitions
- the present invention relates to an ink for ink jet recording in which an active energy ray-curable ink composition is ejected as fine droplets and then cured by irradiation with active energy rays such as ultraviolet rays and electron beams to form an image.
- active energy rays such as ultraviolet rays and electron beams
- Inkjet printing is a method in which ink is ejected from a nozzle and adhered to a recording material. Since the nozzle and the recording material are in a non-contact state, the surface has a curved surface or irregular irregular shape. In contrast, good printing can be performed. Therefore, this printing method is expected to be used in a wide range of applications.
- inks used in the inkjet method include water-based inks mainly composed of water, oil-based inks mainly composed of organic solvents, and active energy ray-curable compounds such as ultraviolet rays and electron beams.
- active energy ray-curable ink As a main component.
- characteristics such as water resistance, solvent resistance, and abrasion resistance, and features that can be used for non-ink-absorbing applications such as glass, metal, plastic, etc. High nature.
- solvent-free inks that do not substantially contain organic solvents do not contain volatile components, and therefore do not require a drying process and are harmful VOC-free. The most promising.
- a photopolymerization initiator is used as a photopolymerization initiator in order to reduce the effect of curing inhibition caused by the irradiation energy being blocked by the colorant.
- Various compounds such as amino ketones, acyl acyl phosphine oxides, hydroxy ketones, and thixanthones have been used.
- a photopolymerization initiator having an absorption characteristic on a relatively long wavelength side is used, and by using such a photopolymerization initiator, the irradiation energy of the pigment can be increased even when the printed coating film is thick.
- the effect of shielding due to reflection, absorption, etc. can be reduced and cured to the deep part of the printed coating film (see Patent Document 1 and Patent Document 2). Or a combination of them V, things are done (see Patent Document 2 and Patent Document 3).
- the low density part and high density part of the full-color print on the non-absorbing material are expressed by the area of the printed dots, and there is no significant difference in the printing film thickness.
- the color density is controlled by the size of the droplets and the dot density, but the print film thickness changes depending on the color density, and the low density area and the high density area.
- the difference in film thickness is greater, particularly in the case of inks that do not contain non-reactive organic solvents.
- the ink film thickness is thin and the interval between dots is wide, so that the majority of the ink adhering to the printing surface comes into contact with the air and is greatly affected by the inhibition of polymerization by oxygen. Become .
- the curing is partially insufficient, and the occurrence of uneven curing is unavoidable in the case of a normal image having color shading.
- ⁇ -aminoketone-based and acylphosphine oxide-based photopolymerization initiators that are readily available are compounds containing an ethylenic double bond that can be cured with active energy rays.
- the photopolymerization initiator will be deposited in the ink, resulting in poor ink ejection due to nozzle clogging. There are some things that cause it. For this reason, the amount of addition cannot be increased to improve the shortage of curing, and the conventional active energy one-line curable ink jet recording ink can be said to be practically satisfactory, especially when the coating film is thin. Can be realized.
- white ink using a white pigment such as titanium oxide as the colorant requires a higher colorant concentration than other colors in order to obtain concealment, and the shielding effect by the colorant is increased. Further, the curability deteriorates.
- a large amount of photopolymerization initiator is used here, for example, when a photopolymerization initiator having absorption in a long wavelength region where the coating film has good transparency is used, there is a problem that the cured product becomes yellowish. .
- photopolymerization initiator When this photopolymerization initiator is used in an active energy ray-curable ink jet recording ink, the photopolymerization initiators disclosed in these documents are used alone, particularly with regard to curing of thin films. However, photocuring initiators that cannot achieve sufficient curability and give sufficient curability to the formed coating film are desired.
- Photopolymerization initiators for active energy ray-curable ink jet recording inks were developed by studying the chemical composition and formulation so as to simultaneously satisfy the curability of a wide range of film thicknesses, including coatings. By leveraging his strength.
- Patent Document 1 Japanese Patent Publication No. 6-21256
- Patent Document 2 Special Table 2001-525479
- Patent Document 3 Japanese Patent Laid-Open No. 2002-241647
- Patent Document 4 WO03Z040076 Publication
- Patent Document 5 WO2004Z 009651
- Patent Document 6 WO2004Z092287
- An object of the present invention is to improve the above-mentioned drawbacks in conventional active energy ray-curable ink jet recording inks, and the coating film formed by the ink jet method is thin, even when thick, and practically sufficient. It is an object of the present invention to provide an active energy ray curable ink jet recording ink that does not cause curing unevenness.
- the present inventors have good curability over the entire film thickness in the range corresponding to the image actually formed by the ink jet method, up to a film thickness of about several zm.
- a combination of specific initiators It has been found that the use of the coating can effectively improve the curability of the ink regardless of whether it is a thin film or a thick film, and the present invention has been reached.
- the present invention is an active energy ray-curable ink jet recording ink containing a colorant, a compound containing an ethylenic double bond, and a photopolymerization initiator.
- the photopolymerization initiator has the general formula (1)
- A is one O CH ⁇ , — CH (CH 2), and one C (CH 2) —force, from the group
- R ⁇ and R 2 each independently represents a hydrogen atom or a methyl group
- the compound represented by the general formula (1) containing 40% by mass or more of the total photopolymerization initiator, and an aminoketone compound or an acylphosphine oxide compound.
- An active energy ray-curable ink for ink jet recording is provided.
- the active energy ray-curable ink for ink jet recording of the present invention uses a photopolymerization initiator represented by the general formula (1) that hardly causes inhibition of polymerization by oxygen, and is an a-aminoketone type or an acylphosphine oxide type.
- a photopolymerization initiator represented by the general formula (1) that hardly causes inhibition of polymerization by oxygen, and is an a-aminoketone type or an acylphosphine oxide type.
- (meth) acrylate means one or both of metatalate and attalate.
- the active energy ray-curable ink jet recording ink of the present invention exhibits practically good curability regardless of whether the coating film formed by the inkjet method is thin or thick. Insufficient curing or unevenness of curing will not occur.
- One of the photopolymerization initiators used in combination in the present invention is represented by the general formula (1)
- R ⁇ and R 2 each independently represents a hydrogen atom or a methyl group
- A is — ⁇ —, — CH —, or — CH (CH) —
- R is
- the general formula (1) includes a photopolymerization initiator classified as an OC-hydroxyketone type, and has a large absorption wavelength on the long wavelength side compared to ⁇ -aminoketone type and acylphosphine oxide type photopolymerization initiators. Although the coating was not colored after curing, it was considered to be a disadvantageous structure for curability in a system containing a colorant.
- 1-Hydroxycyclohexyl as photopolymerization initiator of the same oc-hydroxyketone type
- phenol ketones product name: Irgacure 184 manufactured by Chinoku Special Chemicals
- 2-hydroxy 2-methyl 1 phenylpropane 1-one product name: Darocur 1173 manufactured by Ciba Specialty Chemicals
- the photopolymerization initiator represented by the general formula (1) is less susceptible to polymerization inhibition by oxygen.
- the photopolymerization initiator represented by the chemical formula (2) is not so high in solubility in an ultraviolet curable compound as described later, but particularly has good surface curability and is colorless with no odor, so that it has a stable dissolution property. However, if it is not bad, it is possible to add an amount within the range and use a photopolymerizable compound in an increased amount.
- the blending amount of the general formula (1) and the chemical formula (2) is more preferably 50% by mass or more, which is 40% by mass or more in the total photopolymerization initiator. Further, the upper limit of the amount of added soot is preferably set to 90% by mass, and more preferably set to 80% by mass. When the amount of addition is 0% by mass or more, the coating film curability of the thin film is good, and it is possible to prevent the occurrence of uneven curing in the image formed by the ink jet recording method.
- the photopolymerization reaction represented by the general formula (1) is used in the present invention.
- the photopolymerization initiator used in combination with the initiator is an a-aminoketone or acylphosphine oxide photopolymerization initiator.
- the amount of the aminoketone-based or acylphosphine oxide-based photopolymerization initiator is 60% by mass or less and preferably 50% by mass or less of the total photopolymerization initiator amount.
- the lower limit of the amount added is preferably 10% by mass, and more preferably 20% by mass.
- the total photopolymerization initiator amount is preferably 5% by mass to 15% by mass with respect to the total mass of the ink components.
- the amount of the aminoketone or acylphosphine oxide photopolymerization initiator is preferably 10% by mass or more because the curability of the thick film and the thin film is good.
- a colorless, odorless photopolymerization initiator such as Irgacure 127 represented by the general formula (1) is used for 40% by mass or more.
- the photopolymerization initiator composition can be made to be favorable, and easily cured by the ink jet method, and yellowing of the coating film is difficult to occur.
- the three-mixed system with the addition of ⁇ -aminoketone and acylphosphine oxide photopolymerization initiators improves both curability when the coating film formed by the inkjet method is thin and thick. Therefore, it is preferable.
- the total amount of the a-aminoketone-based and the acyl phosphine oxide-based photopolymerization initiator is 60% by mass or less, more preferably 50% by mass or less of the total photopolymerization initiator amount.
- the total photopolymerization initiator amount is preferably 5% by mass to 15% by mass with respect to the total component mass of the active energy ray ink jet recording ink.
- the compound represented by the general formula (1) is 40% by mass to 90% by mass
- the acyl acylphosphine oxide compound is 5% by mass to 20% by mass
- the oc-aminoketone photopolymerization initiator used in the present invention includes a compound represented by the formula in the structure of the compound. (3)
- R and R are hydrogen atoms, alkyl groups having 1 to 5 carbon atoms, or
- a saturated or unsaturated heteroatom-containing hydrocarbon group to be formed is represented. ), And in particular the formula (4)
- R and R are hydrogen atoms and carbon atoms
- alkyl group or a saturated or unsaturated heteroatom-containing hydrocarbon group that forms a heterocycle together, R and R are carbon atoms] ⁇
- aminoketone photopolymerization initiators include those represented by formula (5)
- 2-Benzyl-2-dimethylamino 1- (4 morpholinophenol) butane 1-one (trade name: Irgacure 369, manufactured by Ciba 'Specialty' Chemicals) represented by (6).
- the photopolymerization initiator represented by the formula (5) is more preferable in that no yellow coloring is generated with the increase in the amount added.
- the photopolymerization initiator represented by (6) can be used properly depending on the preferred use in that the solubility in the ultraviolet curable composition is not so high and there is no strong odor.
- R, R and R are aromatic groups optionally having a methyl group or an ethyl group as a substituent
- R, R 1 and R 2 are aromatic groups optionally having a methyl group or an ethyl group as a substituent.
- acyl phosphine oxide photopolymerization initiator examples include those represented by the formula (11)
- the photopolymerization initiator represented by the chemical formula (11) is better than the photopolymerization initiator represented by the chemical formula (12) in terms of solubility in the ultraviolet curable composition. preferable.
- Hydroxy-cyclohexyl roof-ketone (trade name: Irgacure 184, manufactured by Ciba 'Specialty' Chemicals), which is a photopolymerization initiator used in the present invention, has the formula (13)
- the print head and the UV irradiation lamp are adjacent to each other, scan the substrate to be printed, and form a thin film coating by jetting ink of each color, and then follow this to cure the coating film by UV irradiation.
- the photopolymerization initiators are mixed and used in the above-described blending range.
- the total amount of the photopolymerization initiator used is as follows. There is no particular limitation. Usually, it is said that it does not adversely affect the physical properties of the cured coating film, but is added as appropriate within the range of the total amount used, but each photopolymerization initiator has a solubility, odor, color, etc. in the ultraviolet curable composition, respectively. Since it has inherent characteristics, it is preferable to use the composition in an appropriate amount by combining the kinds within the above-mentioned blending range depending on the application.
- the active energy ray-curable ink jet recording ink of the present invention is composed of at least a colorant and a compound containing an ethylenic double bond in addition to the photopolymerization initiator.
- Additives such as a sensitizer, a leveling agent for adjusting the surface tension, and a coupling agent for improving the adhesion to the substrate can also be contained.
- dyes and pigments that are conventionally used in ink jet recording inks can be used.
- dyes include azo dyes, phthaloshun dyes, anthraquinone dyes, and the like.
- pigments include azo pigments such as azo lake pigments, insoluble azo pigments, condensed azo pigments and chelate azo pigments, phthalocyanine pigments, anthraquinone pigments, perylene pigments, quinacdrine pigments, isoindoline pigments, thioindigo pigments, and dioxazine pigments.
- Polycyclic pigments such as quinophthalone pigments, basic dye type lakes and acid dyes
- dye lakes such as material lakes
- organic pigments such as nitro pigments, nitroso pigments, garlic black, and daylight fluorescent pigments
- inorganic pigments such as titanium oxide, acid iron-iron, and carbon black.
- the colorant is used in the range of 0.1 to 20% by mass, preferably 2 to 6% by mass of the total amount of ink.
- inorganic pigments having excellent hiding power such as titanium oxide, acid antimony, acid aluminum, magnesium oxide, silicon dioxide, and zinc sulfate are preferably used.
- White pigments are often used at high pigment concentrations in order to ensure concealing power, and these pigments shield part of the active energy rays, resulting in poor curing of the coating film formed by the inkjet method.
- Cheap When the addition amount of the photopolymerization initiator is increased to improve the curability, there is a problem of yellowing of the cured coating film depending on the photopolymerization initiator, but coloring is more conspicuous in the white coating film. For this reason, it is more important to select a photopolymerization initiator having good curability.
- (meth) acrylate is preferably used from the viewpoints of curing speed, availability, cost, and variety.
- examples of (meth) acrylate include monofunctional (meth) acrylate and polyfunctional (meth) acrylate, which can be used alone or in combination of two or more in any ratio.
- Examples of monofunctional (meth) acrylates that can be used in the present invention include methyl, ethyl, propyl, butyl, 3-methoxybutyl, amyl, isoamyl, 2-ethyl hexyl, octyl, isooctyl, noel, and isonoel.
- Decyl isodecyl, dodecyl, tridecyl, hexadecyl, octadecyl, stearyl, isostearyl, cyclohexyl, benzyl, methoxetyl, butoxychetyl, fenoxetyl, norfenoxytyl, glycidyl, dimethylaminoethyl, decylaminoethyl And (meth) acrylate having a substituent such as isobornyl, dicyclopentanyl, dicyclopentane, dicyclopentane-mouth kichetil and the like.
- the content of the compound having one ethylenic double bond is preferably 20% by mass or less based on the total amount of the photopolymerizable compound.
- examples of the polyfunctional (meth) acrylate include 1,3-butylene glycol, 1, 4- Butanediol, 1,5-pentanediol, 3-methyl-1,5-pentanediol, 1,6 hexanediol, neopentyl glycol, 1,8 octanediol, 1,9 nonanediol, tricyclodecane dimethanol, ethylene glycol, Poly (ethylene glycolone), propylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol and other di (meth) acrylates, tris (2-hydroxyethyl) isocyanurate di (meth) acrylate, 1, 6 hexane Di (meth) acrylate of diol obtained by adding 2 mol or more of ethylene oxide or propylene oxide to 1 mol of diol, 4 mol or more of ethylene oxide or propylene oxide added to 1 mol
- (meth) acrylates In addition to the above (meth) acrylates, functional oligomers containing ethylenic double bonds such as urethane (meth) acrylic oligomers and epoxy (meth) acrylic oligomers may be added as necessary. I can do it. Since the (meth) acrylate oligomer has a higher viscosity than the monomer, it is preferably used in the range of 2 to 20% by mass with respect to the total amount of the photopolymerizable compound.
- an active energy linear curable composition having good ejection properties, good curability and high coating strength when used in an ink jet recording method is formed.
- monofunctional acrylate, bifunctional acrylate, trifunctional or more functional acrylate, oligomers, etc. they are used in appropriate combinations while balancing the physical properties.
- the sensitizer used in the present invention include trimethylamine, methyldimethanolamine, triethanolamine, p-jetylaminoacetophenone, p-dimethylaminobenzoate, ethyl ester, and p-dimethylaminobenzoate.
- Amines that do not cause an addition reaction with the polymerizable component such as isoamyl acid, N, N-dimethylbenzylamine, and 4,4′-bis (jetylamino) benzophenone, can also be used in combination.
- a sensitizer that is excellent in solubility in a compound containing an ethylenic double bond and that does not inhibit active energy ray permeability.
- a dispersant can be used as necessary. In this case, it is desirable to use the optimum blending value required according to the type of colorant and dispersant.
- a commercially available dispersant for pigment dispersion can be used.
- a polymer dispersant that does not substantially contain a volatile organic solvent preferred by the polymer dispersant is more preferable.
- Specific examples include the Lubrizol Solsperse Series, the Ajinomoto Fine Techno Ajispur Series, and the BYK Series BYK Chemie.
- a pigment derivative can also be used as a dispersion aid if necessary.
- Commercially available products include, but are not limited to, such as Sonores 5000, 12000, and 22000 manufactured by Norey Brizonole.
- a non-reactive organic solvent can be used in the composition of the present invention for the purpose of adjusting the viscosity and the like.
- the organic solvent can be used up to 70% by mass of the total amount of ink, but it is more preferred and the amount used is 50% by mass or less.
- the ink composition of the present invention can be used without a solvent when there is a problem with properties such as viscosity, but it is preferable that the ink composition does not substantially contain a diluent solvent. In other words, by not including a solvent for dilution, the solvent drying process is not required first, and further, the remaining dilution solvent reduces the density of the three-dimensional network structure of the cured film and prevents high molecular weight.
- the active energy ray-curable ink jet recording ink of the present invention can be produced, for example, by mixing and kneading a colorant, an additive and the like in an appropriate ratio to a part of a compound containing an ethylenic double bond. Prepared by adding a photopolymerization initiator to the compound containing the remaining ethylenic double bond and stirring and dissolving the resulting mixture, and stirring and dissolving the resulting mixture. be able to.
- the kneading can be performed using a disperser such as a paint shaker, a ball mill, a closed horizontal bead mill (for example, SC mill), or an open vertical bead mill (for example, a disperse mat).
- a disperser such as a paint shaker, a ball mill, a closed horizontal bead mill (for example, SC mill), or an open vertical bead mill (for example, a disperse mat).
- the dispersant for each of the yellow, magenta, cyan, and black inks is a polymer dispersant (Ajinomoto Fine-Techno product name: Ajisper PB821) and 2-hydroxyl-3phenoxypropyl acrylate (product of Toagosei Co., Ltd.). (Name: ALONIX M-5700) A 30% by weight preliminarily dissolved dispersant solution was used.
- a dispersant for white ink a polymer dispersant (Luprisol product name: Solsperse 24000GR) is added in 2-hydroxy-3phenoxypropyl acrylate (Toagosei product name: Alonix M-5700). A dispersant solution in which 30% by mass was dissolved in advance was used.
- Polymer dispersant solution 4 parts (Polymer dispersant (Ajinomoto Fine-Techno product name: Ajisper PB821) 2 Hydroxy 3 Phenoxypropyl acrylate (Product name: Alonix M— 5700
- a high-concentration pigment dispersion of cyan pigment was prepared by removing with a ron mesh.
- Polymer dispersion aid (Lubrisol Solsperse 5000): 0.4 part
- Polymer dispersant solution 2. 8 parts
- Pentaerythritol tetraatalylate 5 parts
- Modified silicone oil (Product name: KF-351A, manufactured by Shin-Etsu Chemical Co., Ltd.): 0.2 part
- Ink of each color of the above examples and comparative examples was prepared in the same manner as in Example 1 except that the composition and added parts of the photopolymerization initiator of Example 1 were changed to the compositions and added parts shown in Tables 1 and 2.
- the photopolymerization initiator used is as follows.
- Irg. 127 Irgacure 127 ( ⁇ -hydroxy ketone photopolymerization initiator manufactured by Chinoku 'Specialty' Chemicals)
- Irg. 819 Irgacure 819 (Chinoku 'Specialty' Chemicals' acylphosphine oxide photoinitiator)
- Lucillin TPO BASF Co., Ltd., acyl phosphine oxide photoinitiator
- Irg. 907 Irgacure 907 ( ⁇ -aminoketone photopolymerization initiator manufactured by Chinoku 'Specialty' Chemicals)
- Irg. 651 Irgacure 651 (Chinoku 'Specialty' Chemicals benzyl methyl ketal photoinitiator)
- Darocurel l73 Darocur 1173 (Chinoku 'Specialty' Chemicals ⁇ -Hydro-oxyketone photopolymerization initiator)
- Irg. 369 ILGACURE 369 ( ⁇ -aminoketone photopolymerization initiator manufactured by Chinoku 'Specialty' Chemicals)
- Irg. 184 Irgacure 184 ( ⁇ -hydroxy ketone photopolymerization initiator manufactured by Chinoku 'Specialty' Chemicals)
- a 50 x 50 mm polycarbonate plate is spin-coated with ink to a thickness of about 6 ⁇ m and about 2 ⁇ m, and then irradiated with ultraviolet rays using a conveyor type UV irradiation device. The curability was compared by the number of irradiation passes until the ink-coated surface was touched and tack free.
- Lamp used Metal halide lamp (manufactured by Nihon Batteries) Lamp output: 120WZcm Irradiation amount per pass: 0.2jZcm 2 Mirror used: Condensing cold mirror
- the formulation excluding the pigment from the ink was heated to 60 ° C, and after completely dissolving the photopolymerization initiator, it was stored at 20 ° C for 14 days, and the presence or absence of precipitation of the photopolymerization initiator was confirmed visually. . ⁇ : No precipitate is generated.
- Example 1 is Irg. 907 force
- Example 2 contains 40% by mass of Irg. 369, so that the characteristics of the respective photopolymerization initiators are strong.
- the coating film is colored. Odor during curing is greatly reduced by aging the coated material It can be used in consideration of the combination with the color tone of the pigment used, and there is no problem at least for black and yellow inks.
- Example 6 and Example 7 by using a three-component photopolymerization initiator in combination with an examinoketone compound and an acylphosphine oxide compound as a photopolymerization initiator.
- the total amount of photopolymerization initiator can be increased while maintaining dissolution stability, odor during curing, and coating coloration within the practical range. I understand that.
- Comparative Examples 2 and 3 when Irgacure 127 was suppressed to 30% by mass of the total photopolymerization initiator, the curing characteristics of the thin film were lowered. As is clear from Comparative Examples 4 to 6, even when 40% by mass or more of Irgacure 127 is used, the photopolymerization initiator to be used does not use an ⁇ -aminoketone type or an acylphosphine-based xylose type photopolymerization. It can be seen that with the initiator composition, the curability of the thin film is particularly insufficient.
- the results of the examples using the photopolymerization initiator composition of the present invention are all within 4 passes, most of them are within 3 passes, in all colors regardless of whether they are thin or thick. Can be cured sufficiently and practically good curability can be obtained.
- the results in Table 4 show, the results of the comparative examples are those that require ultraviolet irradiation of 5 passes or more, and the curability is particularly deteriorated when the thin film is cured.
- the active energy curable ink jet recording ink of the present invention is superior to the conventional energy curable ink jet recording ink in terms of odor during curing and coloring of the cured coating film in addition to the curing characteristics.
- a photopolymerization initiator of about 10% by mass was added in order to maintain good curing characteristics, there was a tendency that odor and coloring problems had to be tolerated to some extent, but the general formula (1)
- a photopolymerization initiator represented by the formula for example, by using 40% by mass or more of Irgacure 127 having low coloring property and low odor, the curing property is kept good, and the odor during curing is reduced.
- the coloring point of the cured coating can be further improved.
- the Irgacure 369 used in the past has good curing characteristics, but when used in a large amount, the color of the cured coating is generated, and the color of the pigment to be used in combination is restricted.
- a photopolymerization initiator composition combined with Irgacure 127 good curing characteristics can be exhibited even when used in an addition amount in a range that does not cause coloring of the cured coating film.
- a photopolymerization initiator represented by the general formula (1) in combination with an ⁇ -aminoketone or a acylphosphine oxide photopolymerization initiator.
- Example 6 the yellowness of cured coatings coated with white ink at 6 m when using the photopolymerization initiator compositions of Example 6 and Comparative Example 8 were compared.
- X-Rite's spectroscopic instrument Densitometer X—Rite528 was used, and white PET having an optical density of 0.07 and a reflectance of 85.1% was used as the base of the sample.
- Comparative Example 7, Comparative Example 8, and Comparative Example 9 are photopolymerization initiator compositions disclosed in Patent Document 3 using Irgacure 819 and Irgacure 369. It is clear that it is necessary to increase the loading capacity of Irgacure 819 and Irgacure 369 to improve the curing characteristics of the thin film. The increase in Ilgacure 369 causes coloring of the cured coating film, resulting in Irgacure 819 and Irgacure. Increasing the total amount of 369 causes a decrease in dissolution stability. However, from the above results, it is shown that a whiter white ink cured product can be obtained with the photopolymerization initiator composition shown in Example 6 using 40% by mass or more of Irgacure 127.
- Irgacure 907 conventionally used has good curing characteristics, but generates a strong odor upon curing when used in a large amount. Aging of the cured film or a period of time eliminates the odor of the cured film, so it does not become a defect of the final coated object, but the odor is as small as possible considering the manufacturing process.
- the photopolymerization initiator represented by the general formula (1) for example, Irgacure 127 is used in an amount of 40% by mass or more of the total photopolymerization initiator composition. It can be used in an added amount to exhibit good curing characteristics.
- a three-component photopolymerization initiator in which a photopolymerization initiator represented by the general formula (1) is combined with an ⁇ -aminoketone-based and a acylphosphine oxide-based photopolymerization initiator.
- a photopolymerization initiator represented by the general formula (1) is combined with an ⁇ -aminoketone-based and a acylphosphine oxide-based photopolymerization initiator.
- a part of ILGACURE 907 has no problem with odor, and in combination with ILGACURE 127, it is replaced with a photoacyl phosphine oxide photopolymerization initiator with good curing characteristics to reduce odor during curing.
- the total amount of the photopolymerization initiator can be increased while suppressing the dissolution stability to a practical range, and the curing characteristics can be improved.
- the present invention is further excellent in terms of dissolution stability, and that it is possible to improve dissolution stability while maintaining good curing characteristics. Furthermore, a recording system in which a print head and an ultraviolet irradiation lamp scan the substrate to be printed and track each ink jet of each color to irradiate the ink landed on the substrate to be irradiated with ultraviolet rays. When used in this inkjet printer, the active energy curable inkjet recording ink of the present application also shows good curability.
- the reactive dilution monomer composition includes the composition shown in parts by mass shown in Table 6 for yellow ink and the photopolymerization initiator shown in Table 7. Types and parts by mass were used.
- a yellow ink having the photopolymerization initiator composition of each example and comparative example was prepared in the same procedure as in the previous examples and comparative examples.
- 0.2 part KF-351A is a polyether silicone oil manufactured by Shin-Etsu Chemical Co., Ltd.
- black pigment high-concentration pigment dispersion 22.5 parts was used, and as a reactive diluted monomer, the composition shown in parts by mass shown in Table 6 for black ink and the photopolymerization initiator shown in Table 7 were used.
- black inks having the photopolymerization initiator compositions of Examples and Comparative Examples were prepared using the types and parts by mass.
- magenta inks having the photopolymerization initiator compositions of the examples and comparative examples were prepared in the same procedure as in the previous examples and comparative examples.
- cyan inks having the photopolymerization initiator compositions of the examples and comparative examples were prepared in the same procedure as in the previous examples and comparative examples.
- Each color ink having each photopolymerization initiator composition prepared as described above was evaluated according to the following items.
- the stricter low-temperature dissolution stability was also evaluated for the dissolution stability.
- Evaluation of thin film curability and thick film curability is made by scanning the print head and ultraviolet irradiation lamp on the substrate to be printed, and tracking each time the ink of each color is ejected and landing on the substrate to be printed.
- Ink is applied to a polycarbonate plate (product name: Lexan, manufactured by Asahi Glass) with a spin coater to a thickness of about 2 ⁇ m, and irradiated with a conveyor-type UV irradiation device (one metal metalide lamp manufactured by Nippon Batteries: 80 WZcm output).
- Ultraviolet rays were irradiated with an energy of 0.08 jZcm 2 and the number of passes at which the surface was not damaged in a rubbing test with a non-woven fabric (trade name: Bencott manufactured by Asahi Kasei) was evaluated.
- Ink is applied to a polycarbonate plate (product name: Lexan, manufactured by Asahi Glass) with a spin coater to a thickness of about 2 ⁇ m, and irradiated with a conveyor-type UV irradiation device (one metal metalide lamp manufactured by Nippon Batteries: 80 WZcm output). Ultraviolet rays were irradiated with energy of 0.08jZcm 2 (1 pass).
- the ink is applied on the cured film with a spin coater so as to have a thickness of about 2 m, irradiated with ultraviolet rays under the same irradiation conditions, and this is repeated five times to form a film with a thickness of about 10 m. Produced.
- This coating film was irradiated with ultraviolet rays under the same irradiation conditions, and the number of passes at which the surface was not damaged by a rubbing test with a non-woven fabric (trade name: Bencot manufactured by Asahi Kasei) was evaluated.
- the coating surface was cut into a cross shape, and a cellophane tape (manufactured by Nichiban) was applied to the cut portion, and the peeled state of the coating film was visually evaluated.
- ⁇ No peeling.
- the ink using Irgacure 127 which is a photopolymerization initiator represented by the general formula (1), is a thick film in which a thin film is repeatedly applied while being irradiated with ultraviolet rays, even if it is a cured film of a thin film. Even in this cured coating film, it has good curability.
- the photopolymerization initiator represented by the general formula (1) when used, the ink of the comparative example is particularly bad in the curability of the thin cured film. In Comparative Examples 13 and 3, since the thin film had poor curing characteristics, it was difficult to form a thick cured coating film by overcoating with a spin coater.
- the entire surface is irradiated with ultraviolet rays at once, tracking the discharge location for each color discharge, and ultraviolet rays
- the ink coating film for each discharge formed for overcoating is thin, so it is necessary to improve the thin film curability.
- the combination of the photopolymerization initiator represented by the general formula (1) and the ⁇ -aminoketone type or the acylphosphine oxide type photopolymerization initiator as in Example 8 or Example 11 makes it possible to cure the thin film.
- it depends on Irgacure 127, so it is necessary to increase the amount to improve the curing characteristics of the thin film.
- Irgacure 127 since the solubility of Irgacure 127 in UV curable compositions is not very good, an increase in the amount added reduces the dissolution stability, and an increase in Irgacure 127 increases the amount of UV absorption on the surface. Insufficient curing occurs in the deep part of the film, and the adhesiveness with the cured coating film decreases as in Examples 8 and 11.
- Examples 9, 10, 12, and 13 As described above, 1-hydroxy-cyclohexylphenol-ketone, which is a photopolymerization initiator that is slightly inferior in curing performance but extremely soluble in UV-curable compositions, is used for the dissolution stability. In addition, the curing characteristics of the thin film can be improved without reducing the adhesion of the thick cured coating film to the substrate.
- the active energy ray-curable ink jet recording ink of the present invention exhibits practically good curability regardless of whether the coating film formed by the inkjet method is thin or not, and the cured coating film is insufficiently cured. This is industrially useful since no unevenness of curing occurs.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/666,422 US8217095B2 (en) | 2004-10-29 | 2005-10-28 | Active energy ray-curable ink-jet printing ink |
CA002585631A CA2585631A1 (en) | 2004-10-29 | 2005-10-28 | Active energy ray-curable inkjet recording ink |
AU2005297812A AU2005297812C1 (en) | 2004-10-29 | 2005-10-28 | Active energy ray-curable ink-jet printing ink |
EP05805349A EP1832631B1 (en) | 2004-10-29 | 2005-10-28 | Active energy ray-curable inkjet recording ink |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004-315952 | 2004-10-29 | ||
JP2004315952 | 2004-10-29 |
Publications (1)
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WO2006046698A1 true WO2006046698A1 (ja) | 2006-05-04 |
Family
ID=36227938
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/019902 WO2006046698A1 (ja) | 2004-10-29 | 2005-10-28 | 活性エネルギー線硬化型インクジェット記録用インク |
Country Status (8)
Country | Link |
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US (1) | US8217095B2 (ja) |
EP (1) | EP1832631B1 (ja) |
KR (1) | KR20070083840A (ja) |
CN (1) | CN100560663C (ja) |
AU (1) | AU2005297812C1 (ja) |
CA (1) | CA2585631A1 (ja) |
TW (1) | TWI378127B (ja) |
WO (1) | WO2006046698A1 (ja) |
Cited By (4)
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EP1900784A1 (en) | 2006-09-14 | 2008-03-19 | FUJIFILM Corporation | Ink composition |
JP2009292898A (ja) * | 2008-06-03 | 2009-12-17 | Kaneka Corp | 硬化性組成物およびその硬化物 |
WO2014054763A1 (en) * | 2012-10-05 | 2014-04-10 | Ricoh Company, Ltd. | Photopolymerizable composition, photopolymerizable inkjet ink, and ink cartridge |
WO2014129461A1 (ja) * | 2013-02-25 | 2014-08-28 | Dicグラフィックス株式会社 | 活性エネルギー線硬化型オフセットインキ組成物 |
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JP5544707B2 (ja) * | 2008-03-04 | 2014-07-09 | セイコーエプソン株式会社 | 活性光線硬化型インク組成物、ならびにそれを用いたインクセット、インクジェット印刷装置およびインクジェット記録方法 |
CN101981139B (zh) * | 2008-03-28 | 2013-09-18 | Dic株式会社 | 活性能量线固化性油墨组合物以及印刷物 |
US9187578B2 (en) | 2009-04-16 | 2015-11-17 | Dic Corporation | Polymer modified pigment and production process of the same |
JP5544533B2 (ja) * | 2009-12-08 | 2014-07-09 | スリーボンドファインケミカル株式会社 | 爪又は人工爪被覆用硬化性樹脂組成物 |
JP5953685B2 (ja) * | 2010-11-24 | 2016-07-20 | セイコーエプソン株式会社 | 記録方法、及び記録装置 |
CN102681343A (zh) * | 2011-03-08 | 2012-09-19 | 住友化学株式会社 | 着色感光性树脂组合物 |
JP6142506B2 (ja) | 2012-05-29 | 2017-06-07 | セイコーエプソン株式会社 | インクジェットインク組成物、インク収容体、インクジェット記録方法 |
JP2016514174A (ja) * | 2013-02-15 | 2016-05-19 | サン ケミカル コーポレイション | 低移行エネルギー硬化性インク |
EP3006515B1 (en) * | 2013-05-27 | 2019-08-28 | DIC Corporation | Active energy ray-curable composition, and ink composition for inkjet recording use which is prepared using said composition |
EP3294815B1 (en) * | 2015-05-15 | 2020-09-02 | Sun Chemical Corporation | Energy curable inkjet inks and coating compositions |
WO2018067438A1 (en) | 2016-10-03 | 2018-04-12 | The Procter & Gamble Company | Method and apparatus for inkjet printing nonwoven absorbent article components |
WO2018164865A1 (en) | 2017-03-07 | 2018-09-13 | The Procter & Gamble Company | Method for curing inks printed on heat sensitive absorbent article components |
EP3592314B1 (en) * | 2017-03-07 | 2021-06-30 | The Procter & Gamble Company | Method and apparatus for curing inks printed on fibrous absorbent article components |
EP4233817A3 (en) | 2017-05-12 | 2023-09-13 | The Procter & Gamble Company | Feminine hygiene article |
WO2019112641A1 (en) | 2017-05-12 | 2019-06-13 | The Procter & Gamble Company | Feminine hygiene article |
EP3621572A1 (en) | 2017-05-12 | 2020-03-18 | The Procter and Gamble Company | Feminine hygiene article |
EP3624747B1 (en) | 2017-05-17 | 2023-05-03 | The Procter & Gamble Company | Method and apparatus for drying inks printed on heat sensitive absorbent article components |
CN112239626A (zh) * | 2020-10-19 | 2021-01-19 | 常州市灵冉精密五金有限公司 | 一种气弹簧用高硬度耐磨活塞杆及其制备方法 |
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- 2005-10-28 AU AU2005297812A patent/AU2005297812C1/en not_active Ceased
- 2005-10-28 EP EP05805349A patent/EP1832631B1/en active Active
- 2005-10-28 US US11/666,422 patent/US8217095B2/en active Active
- 2005-10-28 KR KR1020077009675A patent/KR20070083840A/ko not_active Application Discontinuation
- 2005-10-28 CN CNB2005800372766A patent/CN100560663C/zh active Active
- 2005-10-28 TW TW094137809A patent/TWI378127B/zh not_active IP Right Cessation
- 2005-10-28 CA CA002585631A patent/CA2585631A1/en not_active Abandoned
- 2005-10-28 WO PCT/JP2005/019902 patent/WO2006046698A1/ja active Application Filing
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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EP1900784A1 (en) | 2006-09-14 | 2008-03-19 | FUJIFILM Corporation | Ink composition |
EP2169020A1 (en) * | 2006-09-14 | 2010-03-31 | FUJIFILM Corporation | Ink composition, ink jet recording method, method for producing planographic printing plate, and planographic printing plate |
JP2009292898A (ja) * | 2008-06-03 | 2009-12-17 | Kaneka Corp | 硬化性組成物およびその硬化物 |
WO2014054763A1 (en) * | 2012-10-05 | 2014-04-10 | Ricoh Company, Ltd. | Photopolymerizable composition, photopolymerizable inkjet ink, and ink cartridge |
JP2014088539A (ja) * | 2012-10-05 | 2014-05-15 | Ricoh Co Ltd | 光重合性組成物、光重合性インクジェットインク、インクカートリッジ |
US9758683B2 (en) | 2012-10-05 | 2017-09-12 | Ricoh Company, Ltd. | Photopolymerizable composition, photopolymerizable inkjet ink, and ink cartridge |
WO2014129461A1 (ja) * | 2013-02-25 | 2014-08-28 | Dicグラフィックス株式会社 | 活性エネルギー線硬化型オフセットインキ組成物 |
Also Published As
Publication number | Publication date |
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EP1832631A4 (en) | 2007-12-05 |
EP1832631A1 (en) | 2007-09-12 |
CA2585631A1 (en) | 2006-05-04 |
AU2005297812A1 (en) | 2006-05-04 |
EP1832631B1 (en) | 2012-11-28 |
KR20070083840A (ko) | 2007-08-24 |
CN100560663C (zh) | 2009-11-18 |
TWI378127B (en) | 2012-12-01 |
AU2005297812C1 (en) | 2011-11-17 |
CN101048472A (zh) | 2007-10-03 |
US20070289484A1 (en) | 2007-12-20 |
TW200619331A (en) | 2006-06-16 |
US8217095B2 (en) | 2012-07-10 |
AU2005297812B2 (en) | 2011-05-19 |
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