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WO2019031357A1 - Composition d'encre durcissable par un rayonnement d'énergie active pour impression par jet d'encre - Google Patents

Composition d'encre durcissable par un rayonnement d'énergie active pour impression par jet d'encre Download PDF

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Publication number
WO2019031357A1
WO2019031357A1 PCT/JP2018/028884 JP2018028884W WO2019031357A1 WO 2019031357 A1 WO2019031357 A1 WO 2019031357A1 JP 2018028884 W JP2018028884 W JP 2018028884W WO 2019031357 A1 WO2019031357 A1 WO 2019031357A1
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WIPO (PCT)
Prior art keywords
ink composition
mass
acrylate
photopolymerizable
inkjet printing
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Ceased
Application number
PCT/JP2018/028884
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English (en)
Japanese (ja)
Inventor
興範 中島
拓哉 明瀬
良一 新田
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Sakata Inx Corp
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Sakata Inx Corp
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Filing date
Publication date
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Publication of WO2019031357A1 publication Critical patent/WO2019031357A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • 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 a photocurable ink composition for inkjet printing and an inkjet printing method.
  • the storage stability of the photocurable ink composition for inkjet printing is excellent, and it is curable by active energy rays such as ultraviolet rays using a light emitting diode (LED) as a light source, and printed on a substrate
  • the present invention relates to a photocurable ink composition for inkjet printing, which is excellent in stretchability, cracking of a coating film at the time of bending, glossiness and tackiness.
  • the photocurable ink compositions for ink jet printing have been formed by combining monomers having a specific glass transition temperature.
  • the conventional photocurable ink composition for inkjet printing can adjust the strength of the cured product by adjusting the glass transition temperature, the storage stability of the photocurable ink composition for inkjet printing, the light emitting diode ( The curing property by ultraviolet light using LED as a light source, the stretchability of the printed matter printed on the substrate, cracking of the coating film at bending, glossiness and tackiness were all not satisfactory.
  • the object of the present invention is to add a specific amount of an organic solvent as an ink composition for photocurable inkjet printing for image formation and for printing on a recording medium, and a specific glass transition temperature as a photopolymerizable compound.
  • an organic solvent as an ink composition for photocurable inkjet printing for image formation and for printing on a recording medium
  • a specific glass transition temperature as a photopolymerizable compound.
  • it is excellent in storage stability, and also excellent in curability by ultraviolet light using a light emitting diode (LED) as a light source, and further It is excellent in the glossiness of the formed printed matter, and stretchability, when the printed paper or film is bent, etc., the printed portion can follow and generation of a crack in the printed matter can be prevented, and the activity is excellent in the tackiness.
  • An energy ray-curable ink composition for ink jet printing is obtained.
  • An active energy ray curable ink composition for inkjet printing comprising at least a photopolymerizable compound, a photopolymerization initiator, and an organic solvent, A. 70 to 95% by mass of monofunctional photopolymerizable compounds in all photopolymerizable compounds, B. 5 to 25 mass% of multifunctional photopolymerizable compounds in all photopolymerizable compounds, C. 10 to 30% by mass of monomers and / or oligomers having a glass transition temperature of ⁇ 30 ° C. or less in all photopolymerizable compounds, D.
  • the active energy ray-curable ink composition for ink jet printing according to any one of 1 to 3 further comprising a colorant.
  • the storage stability is excellent, the curability by ultraviolet light using a light emitting diode (LED) as a light source is also excellent, and the gloss of the formed printed matter is further improved.
  • LED light emitting diode
  • it has the remarkable effect of being able to follow the printed portion when the stretchability, printed paper, film, etc. is bent, etc. to prevent generation of a crack in the printed, and further to be excellent in tackiness. it can.
  • the photocurable ink composition for inkjet printing (hereinafter also referred to as the ink composition of the present invention) containing at least the photopolymerizable compound, the photopolymerization initiator, and the organic solvent of the present invention will be described in detail.
  • the ink composition of the present invention containing at least the photopolymerizable compound, the photopolymerization initiator, and the organic solvent of the present invention.
  • Monofunctional photopolymerizable compound > A. in the present invention
  • a monofunctional photopolymerizable compound for example, the following compounds can be adopted. Butyl (meth) acrylate, isobutyl (meth) acrylate, tertiary butyl (meth) acrylate, octyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, decyl (meth) acrylate, isomyristyl (meth) acrylate, stearyl (meth) acrylate ) Acrylate, isostearyl (meth) acrylate, isobornyl (meth) acrylate, lauryl (meth) acrylate, cyclic trimethylolpropane formal (meth) acrylate, cyclohexyl (meth) acrylate, adamantyl (meth) acrylate, dicyclopentanyl ( N- (meth) acryl
  • the content of the monofunctional photopolymerizable compound is 70 to 95% by mass, preferably 75 to 95% by mass, and more preferably 85 to 90% by mass, in all the photopolymerizable compounds.
  • the content is less than 70% by mass, the stretchability and the cracking of the coating film at the time of bending tend to decrease, and when the content exceeds 95% by mass, the tackiness and the curability tend to decrease.
  • the monofunctional photopolymerizable compound of the glass transition temperature which does not correspond to the monomer or oligomer of following C or D can also be used in the range with which the requirements of following C and D are satisfy
  • the polyfunctional photopolymerizable compound is a compound having a plurality of carbon-carbon unsaturated bonds in the molecule, and for example, the following compounds can be adopted.
  • the content of the polyfunctional photopolymerizable compound is 5 to 25% by mass, preferably 5 to 20% by mass, more preferably 10 to 15% by mass, in all the photopolymerizable compounds.
  • the content is less than 5% by mass, the curability and tackiness tend to decrease, while when the content is more than 25% by mass, the stretchability and cracking of the coating film at the time of bending tend to decrease.
  • the polyfunctional photopolymerizable compound of the glass transition temperature which does not correspond to the monomer or oligomer of following C or D can also be used.
  • Monomers having a glass transition temperature of ⁇ 30 ° C. or less include ethylene oxide-modified trimethylolpropane triacrylate, polyfunctional oxides having ethylene oxide and / or propylene oxide-modified backbone such as alkoxylated tetrahydrofurfuryl acrylate, isooctyl acrylate, and triol.
  • EO ethylene oxide
  • the oligomer having a glass transition temperature of -30.degree. C. or less may have only one or more monomers having a glass transition temperature of -30.degree. C. or less as a copolymer component, or the monomer type 1 having a glass transition temperature of -30.degree. It is an oligomer which copolymerizes one or more kinds of monomers having a glass transition temperature exceeding 30 ° C. as described above, and as a result, the glass transition temperature becomes ⁇ 30 ° C. or less. C.
  • the content is less than 10% by mass, the bendability of the coating film is reduced, while if it exceeds 30% by mass, the tackiness tends to be reduced.
  • the content of monomers and / or oligomers having a glass transition temperature of 80 ° C. or more is 10% by mass or more, preferably 50% by mass or less, and more preferably 15% by mass or more and 50% by mass or less in all photopolymerizable compounds. % Or less. If the content is less than 10% by mass, the tackiness tends to decrease.
  • Monomers having an amino group and / or an amide group are various (meth) acrylamide monomers such as acrylamide and acryloyl morpholine, N-vinylamide monomers such as N-vinylcaprolactam, and two photopolymerizable functional groups in the molecule and It is an acrylated amine compound such as CN 371 (manufactured by Sartomer), which is an oligomer of an acrylated amine compound having two amino groups.
  • the content of the monomer and / or oligomer having an amino group and / or an amido group can be arbitrarily determined.
  • the total amount of the photopolymerizable compound is preferably 15% by mass or more, more preferably 15% by mass to 45% by mass, and still more preferably 25% by mass to 45% by mass. If the content is less than 15% by mass, curability and tackiness may be reduced.
  • Organic solvent It is selected from glycol ethers such as dipropylene glycol dimethyl ether and diethylene glycol ethyl methyl ether, glycol ether esters, alcohols, ketones, organic carbonates and mixtures thereof.
  • the content of the organic solvent is preferably 20% by mass or less, more preferably 3.0 to 15% by mass, and more preferably 5.0 to 10% by mass, based on the total mass of the ink composition. If the content exceeds 20% by mass, problems may occur in terms of viscosity, dischargeability, and ink film physical properties.
  • the content of the photopolymerization initiator is preferably in the range of 3 to 25% by mass, and more preferably in the range of 5 to 15% by mass, based on the total mass of the photopolymerizable components. Within this range, it is important to maintain the dischargeability, curability and storage stability of the ink composition in a well-balanced manner.
  • the photocurable ink composition for ink jet printing of the present invention further has a light absorbing property mainly in the wavelength range of 400 nm or more of ultraviolet light in order to promote the curability to ultraviolet light from a light emitting diode (LED) as a light source.
  • the photosensitizer (compound) which has a sensitizing function of hardening reaction by the light of the wavelength of the range can be used together with a photoinitiator.
  • a sensitizer an anthracene sensitizer, a thioxanthone sensitizer and the like are preferable, and a thioxanthone sensitizer is preferable. These can be used alone or in combination of two or more.
  • anthracene sensitizers such as 9,10-dibutoxyanthracene, 9,10-diethoxyanthracene, 9,10-dipropoxyanthracene, 9,10-bis (2-ethylhexyloxy) anthracene, 2 Thioxanthone-based sensitizers such as 2,4-diethylthioxanthone, 2-isopropyl thioxanthone, 4-isopropyl thioxanthone and the like can be mentioned.
  • DBA and DEA manufactured by Kawasaki Kasei Kogyo Co., Ltd.
  • DETX and ITX manufactured by Lambson
  • the content of the sensitizer is preferably in the range of 0 to 8% by mass based on the total mass of the photopolymerizable component. Even if it exceeds 8 mass%, the improvement of the effect is not seen and it is not preferable because it is excessive.
  • the photocurable ink composition for ink jet printing tends to turn yellow, so it has a yellowish color than the color based on the pigment (the original hue). Since the color is obtained, it is preferable to appropriately determine the content of the thioxanthone sensitizer for each color. Specifically, in the white ink composition and the clear ink composition which are susceptible to the change in color tone, it is preferable not to contain the thioxanthone compound as a sensitizer. Further, in the case of the magenta ink composition and the cyan ink composition, it is preferable to use in the range where the problem of the hue does not occur because the change of the hue becomes a problem.
  • the thioxanthone compound is used in combination as a sensitizer. Is preferred.
  • the viscosity of the ink composition is 10 mPa ⁇ s or less at 25 ° C.>
  • the viscosity of the ink composition of the present invention is required to be 10 mPa ⁇ s or less at 25 ° C. When it exceeds 10 mPa ⁇ s, it may be difficult to eject the ink composition from the nozzle for ink jet printing.
  • the value of viscosity in the present invention is a viscosity measured under conditions of 25 ° C. and 20 rpm using an E-type viscometer (trade name: RE100L viscometer, manufactured by Toki Sangyo Co., Ltd.).
  • the photocurable ink composition for ink jet printing of the present invention can also be made to contain a colorant of each color to obtain a photocurable ink composition for ink jet printing of each color.
  • a colorant pigments and dyes conventionally used in conventional photocurable ink compositions for ink jet printing can be used without particular limitation, but in view of light resistance, organic pigments or inorganic pigments, etc. Pigments are preferred.
  • organic pigments for example, dye lake pigments, azo type, benzimidazolone type, phthalocyanine type, quinacridone type, anthraquinone type, dioxazine type, indigo type, thioindico type, perylene type, perinone type, diketopyrrolopyrrole type
  • pigments include isoindolinone type, nitro type, nitroso type, anthraquinone type, flavanthrone type, quinophthalone type, pyranthrone type, and indanthrone type.
  • inorganic pigments include carbon black, titanium oxide, bengala, graphite, iron black, chromium oxide green, aluminum hydroxide and the like. Moreover, the following are mentioned as a specific example of the pigment for every typical hue of the photocurable ink composition for inkjet printing of this invention.
  • a yellow pigment for use as a photocurable yellow ink composition for inkjet printing for example, C.I. I.
  • Pigment Yellow 1 2, 3, 12, 13, 14, 16, 17, 42, 73, 74, 75, 81, 83, 87, 93, 95, 97, 98, 108, 109, 114, 120, 128, 129, 138, 139, 150, 151, 155, 166, 180, 184, 185, 213 and the like, preferably C.I. I. Pigment Yellow 150, 155, 180, 213, and the like.
  • a magenta pigment for use as a magenta ink composition for photocurable inkjet printing for example, C.I. I.
  • a cyan pigment for use as a cyan ink composition for photocurable inkjet printing for example, C.I. I.
  • Pigment Blue 1 2, 3, 15, 15: 1, 15: 2, 15: 3, 15: 4, 15: 6, 16, 18, 22, 27, 29, 60, etc., preferably C . I. Pigment Blue 15: 4 and the like.
  • black pigment for using as a black ink composition for photocurable inkjet printing carbon black (CI.Pigment Black 7) etc. are mentioned, for example.
  • white pigments for use as a white ink composition for photo-curable inkjet printing include titanium oxide, aluminum oxide and the like, and preferably titanium oxide surface-treated with various materials such as alumina and silica. Can be mentioned.
  • the content of the pigment in the photocurable inkjet printing ink composition of the present invention is preferably 1 to 20% by mass with respect to the total amount of the photocurable inkjet printing ink composition.
  • the content of the pigment is less than 1% by mass, the image quality of the obtained printed matter tends to be deteriorated.
  • it exceeds 20% by mass the viscosity characteristics of the photocurable ink composition for ink jet printing tend to be adversely affected.
  • the photocurable ink composition for inkjet printing of the present invention may contain a pigment dispersant, if necessary.
  • the pigment dispersant is used to improve the dispersibility of the pigment and the storage stability of the ink composition of the present invention, and those conventionally used can be used without particular limitation, and among them, polymer dispersion It is preferred to use an agent.
  • pigment dispersants carbodiimide type dispersants, polyester amine type dispersants, fatty acid amine type dispersants, modified polyacrylate type dispersants, modified polyurethane type dispersants, multi-chain type polymer nonionic dispersants, Polymeric ion active agents and the like can be mentioned.
  • pigment dispersants can be used alone or in combination of two or more.
  • the above pigment dispersant is preferably contained in an amount of 1 to 200 parts by mass, based on 100 parts by mass of the total pigment to be used.
  • the content of the pigment dispersant is less than 1 part by mass, the pigment dispersibility and the storage stability of the ink composition of the present invention may be reduced.
  • it may be contained in excess of 200 parts by mass, but there may be no difference in the effect.
  • the more preferable lower limit of the content of the pigment dispersant is 5 parts by mass, and the more preferable upper limit is 60 parts by mass.
  • the photocurable ink composition for inkjet printing according to the present invention has an interface such as a silicon-based surfactant which has conventionally been used as a surfactant in photocurable ink compositions for inkjet printing according to the inkjet head used. It is preferable to include an activator in order to improve the ejection stability.
  • silicone surfactants include polyether-modified silicone oil, polyester-modified polydimethylsiloxane, polyester-modified methylalkylpolysiloxane and the like. These can be used alone or in combination of two or more.
  • the content of the surfactant in the ink composition of the present invention is preferably 0.005 to 1.0% by mass.
  • the surface tension of the photocurable inkjet printing ink composition of the present invention becomes high, and the ejection stability from the inkjet head is reduced.
  • it exceeds 1.0% by mass bubbles increase in the photocurable ink composition for inkjet printing, and the ejection stability is lowered.
  • additives can be added to the photocurable ink composition for ink jet printing of the present invention in order to develop various functionalities as needed.
  • a light stabilizer a surface treatment agent, an antioxidant, an antiaging agent, a crosslinking accelerator, a polymerization inhibitor, a plasticizer, an antiseptic, a pH adjuster, an antifoamer, a moisturizer and the like can be mentioned.
  • a non-curable resin that functions as a vehicle may or may not be blended.
  • the photocurable ink composition for inkjet printing of the present invention obtained from the above materials has a flash point of 70 ° C. or higher measured using a Seta sealed flash point measuring apparatus according to the method according to JIS K2265. Is preferred.
  • the ink composition of the present invention can be made to have a level corresponding to the flammable liquid class 4 in GHS, and is excellent in safety such as low flammability.
  • the photocurable ink composition for inkjet printing of the present invention is required to have a viscosity at 25 ° C. of 10 mPa ⁇ s or less. More specifically, the specific viscosity of the photocurable inkjet printing ink composition can also be designed to be applicable to each inkjet device.
  • a viscosity is a viscosity measured on conditions of 25 degreeC and 20 rpm using E-type viscosity meter (brand name: RE100L-type viscosity meter, Toki Sangyo Co., Ltd. make).
  • the photocurable ink composition for ink jet printing according to the present invention contains a specific amount of the above-mentioned specific photopolymerizable component and an acyl phosphine oxide type photopolymerization initiator to thereby emit ultraviolet light, particularly a light emitting diode (LED) as a light source.
  • LED light emitting diode
  • the method for preparing the ink composition of the present invention is not particularly limited, and all of the above-described materials can be added and mixed by using a bead mill, a 3-roll mill or the like.
  • the conc-based ink is obtained in advance by mixing the pigment, the pigment dispersant and the photopolymerizable component, and the conc-based ink has a composition of a desired photocurable ink jet printing ink composition. It can also be prepared by adding additives such as a photopolymerizable component, a photopolymerization initiator, and a surfactant if necessary.
  • a substrate on which the ink composition of the present invention is to be printed floor materials, vinyl chloride, polyethylene terephthalate, polycarbonate and the like are preferable, but conventionally, a substrate on which a photocurable ink composition for inkjet printing is printed (paper, plastic Films, capsules, gels, metal foils, glass, cloth, etc.) can be printed without problems.
  • a coating film of the ink composition of the present invention landed on the substrate after discharging the ink composition of the present invention to the substrate by an inkjet head And the method of exposing and curing with light.
  • the ink composition of the present invention is supplied to a low viscosity compatible printer head of a printer for inkjet recording, and the film thickness of the coating film on the substrate is, for example, It can be carried out by discharging the ink composition from a printer head so as to be 1 to 60 ⁇ m.
  • exposure to light and curing can be carried out by irradiating light to the coating film of the ink composition of the present invention applied to the substrate as an image.
  • a printer for an ink jet recording system for printing the ink composition of the present invention a printer for an ink jet recording system conventionally used can be used.
  • a conductivity imparting agent is further added to the ink composition of the present invention to adjust the conductivity.
  • a light source for curing the coating film ultraviolet light (UV), ultraviolet light (light emitting diode (LED)), electron beam, visible light and the like can be mentioned.
  • the light emission peak wavelength is preferably in the range of 350 to 420 nm.
  • Light emitting diode (LED) that generates ultraviolet light.
  • the ultraviolet light using a light emitting diode (LED) as a light source is "light emitted from the light emitting diode that generates ultraviolet light having an emission peak wavelength in the range of 350 to 420 nm".
  • W 1 to Wx are monomers 1
  • the mass fraction of each of 2, 3 ... x, Tg represents a theoretical glass transition temperature, provided that the glass transition temperature in the Wood's equation is an absolute temperature).
  • the materials used in the following examples and comparative examples are as follows.
  • ⁇ Base composition Eiger mill (using zirconia beads with a diameter of 0.5 mm as media) using a mixture of pigment, pigment dispersant and photopolymerizable component in a blending ratio (mass ratio) of 16/6/78 The mixture was dispersed to obtain a base composition.
  • Each component is mix
  • ⁇ Thickened or sediment returned to some degree when lightly shaken.
  • ⁇ Thickening or sediment, not returned to the original even when strongly shaken.
  • Coatings of the ink compositions obtained in Examples 1 to 14 and Comparative Examples 1 to 7 are formed using an inkjet recording apparatus equipped with an inkjet nozzle for low viscosity ink, and the ridge side and the valley side are each 180 degrees And the foldability after printing was evaluated according to the following evaluation criteria.
  • an ink jet ink composition having an appropriate viscosity and excellent storage stability and curability can be obtained, and an ink jet excellent in tackiness, bendability, stretchability, and gloss.
  • the coating film by the ink composition was able to be obtained.
  • B.I. According to Comparative Example 1 which does not contain a polyfunctional photopolymerizable compound, the result is low in viscosity and inferior in tackiness. According to Comparative Example 2 in which the polyfunctional photopolymerizable compound is contained in excess, the result was poor in stretchability.
  • Comparative Example 3 which does not contain a monomer and / or oligomer having a glass transition temperature of -30 ° C. or less, the result is inferior in bendability.
  • Comparative Example 4 in which the glass transition temperature contains a monomer and / or oligomer in excess of ⁇ 30 ° C. or less, the result was inferior in tackiness.
  • D According to the comparative example 5 which does not contain a monomer and / or an oligomer whose glass transition temperature is 80 degreeC or more, it resulted in it being inferior to tackiness.
  • F According to the comparative example 6 which does not contain an organic solvent, it was inferior to glossiness and conversely according to the comparative example 7 contained exceeding 20 mass%, it was inferior to tackiness.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Ink Jet (AREA)

Abstract

Le problème à la base de la présente invention concerne l'obtention, en tant que composition d'encre photodurcissable pour impression par jet d'encre pour la formation ou l'impression d'images sur un support d'enregistrement, d'une composition d'encre durcissable par un rayonnement d'énergie active pour impression par jet d'encre, qui a atteint une excellente stabilité au stockage, une excellente aptitude au durcissement au moyen d'une lumière ultraviolette qui utilise une diode électroluminescente (DEL) en tant que source lumineuse et un excellent brillant d'une matière imprimée formée avec celle-ci, tout en présentant d'excellentes propriétés de pouvoir adhésif et étant en mesure d'empêcher l'apparition de craquelures dans l'impression grâce au fait qu'une partie d'impression présente une aptitude à l'étirage et une aptitude au prolongement dans des cas où une feuille ou un film de papier imprimé est plié(e), du fait qu'elle contient un monomère ou un oligomère qui présente un groupe amino ou un groupe amide mélangé en plus dans une combinaison de monomères ou d'oligomères, qui présentent des températures de transition vitreuse spécifiques. Comme solution pour résoudre le problème, la présente invention porte sur une composition d'encre durcissable par rayonnement d'énergie active pour impression par jet d'encre, qui contient au moins un composé photopolymérisable, un initiateur de photopolymérisation et un solvant organique et qui satisfait aux exigences suivantes A-G. A. Un composé photopolymérisable monofonctionnel est contenu en une quantité de 70 à 95 % en masse par rapport à tous les composés photopolymérisables. B. Un composé photopolymérisable polyfonctionnel est contenu en une quantité de 5 à 25 % en masse par rapport à tous les composés photopolymérisables. C. Un monomère et/ou un oligomère présentant une température de transition vitreuse de -30°C ou moins est contenu en une quantité de 10 à 30 % en masse par rapport à tous les composés photopolymérisables. D. Un monomère et/ou un oligomère présentant une température de transition vitreuse de 80°C ou plus est contenu en une quantité de 10 % en masse ou plus par rapport à tous les composés photopolymérisables. E. Un monomère et/ou un oligomère présentant un groupe amino et/ou un groupe amide est contenu. F. Un solvant organique est contenu en une quantité de 20 % en masse ou moins par rapport à la masse totale de la composition d'encre. G. La viscosité de la composition d'encre est de 10 mPa·s ou moins à 25°C.
PCT/JP2018/028884 2017-08-08 2018-08-01 Composition d'encre durcissable par un rayonnement d'énergie active pour impression par jet d'encre Ceased WO2019031357A1 (fr)

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JP7382018B2 (ja) * 2019-06-17 2023-11-16 セイコーエプソン株式会社 放射線硬化型インクジェット組成物及び記録方法
JP7463795B2 (ja) 2020-03-25 2024-04-09 セイコーエプソン株式会社 放射線硬化型インクジェット組成物及びインクジェット方法
WO2021261208A1 (fr) * 2020-06-24 2021-12-30 サカタインクス株式会社 Composition d'encre pour impression par jet d'encre photodurcissable
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