EP2841508A1 - Varnish composition transferable by inkjet suitable for sublimable or thermal-transfer ink - Google Patents
Varnish composition transferable by inkjet suitable for sublimable or thermal-transfer inkInfo
- Publication number
- EP2841508A1 EP2841508A1 EP13723424.1A EP13723424A EP2841508A1 EP 2841508 A1 EP2841508 A1 EP 2841508A1 EP 13723424 A EP13723424 A EP 13723424A EP 2841508 A1 EP2841508 A1 EP 2841508A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- varnish
- weight
- acrylate
- curable
- monomer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
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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
- 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
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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
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
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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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/08—Homopolymers or copolymers of acrylic acid esters
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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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
Definitions
- Ink transferable varnish composition suitable for sublimable ink or heat transfer.
- the present invention relates to the field of protection layers for substrates, preferably for printed substrates, and more particularly to the field of ink-jet varnishes that do not require significant heating during its deposition.
- an ink is deposited on the surface of a substrate, this substrate being, for example, plastic. It is then common to cover the printed surface of this substrate with a protective layer.
- This protective layer completes the fixation of the printed image on the substrate while guaranteeing the resistance of the printing against certain external aggressions such as projections, or even light, heat or humidity.
- the deposition of this protective layer on the printed substrate is generally performed by offset, flexo, screen printing or inkjet, to form a protective layer and / or finish.
- the varnish once deposited and hardened, not only gives the substrate protection and / or finishing function mails it can sometimes also allow to perform an additional printing of the substrate coated by sublimation technology and / or heat transfer and / or laser marking; this additional impression is usually called customization or overprinting.
- a problem in the field therefore relates to providing a varnish for inkjet printing, allowing such customization or overprinting.
- the varnish according to the present invention also allows the additional deposition by a lamination process of a generally transparent film; as non-limiting examples, there may be mentioned films of PVC, PET, PLA, Polycarbonate, etc.
- the varnish according to the present invention made it possible to obtain delamination resistance values of between 4 and 20 N / cm, for example between 6 and 15 N / cm.
- the present invention aims to overcome one or more disadvantages of the prior art by providing a cover ink adapted to limit the risk of damage to the print heads and operating in temperature ranges which do not impose a significant heating of the varnish when it is deposited on the printed substrate.
- a varnish for covering the surface of a substrate and deposited by ink jet the composition of which comprises at least:
- curable monomer wherein at least one curable monomer present in the composition is selected from a group consisting of alkoxylated and / or polyalkoxylated acrylic monomers comprising one or more di or tri-acrylates, and
- At least one curable oligomer is selected from polyesters (preferably hexafunctional) and / or hexafunctional aliphatic acrylate urethanes and / or epoxy resins, such that the weight ratio between curable oligomer and curable monomer is greater than 1/6 and less than 1/2, and in that the varnish has a viscosity of 5 to 40 mPa.s at 25 ° C and a surface tension of 19 to 35 mN / m at 25 ° C.
- the varnish according to the present invention is not only sensitive to heat but also extremely resistant to delamination which represents a considerable advantage for the applications considered.
- a further object of the invention is to provide a method for producing a particular varnish of the present invention.
- the prior art curable varnishes depositable inkjet in order to form a protective layer and / or finish does not allow to carry out one or more additional printing steps (usually called personalization in the case for example of loyalty cards, access badges, etc.). Indeed, they generally form a silicone layer that does not allow the transfer and / or the adhesion of the ink during printing in thermal transfer or sublimation. Moreover, since these techniques subject the varnishes to high pressures and high temperatures (for example of the order of 70 to 220 ° C.), they are deteriorated during these so-called steps so that they can no longer fill their protection and / or finishing features.
- the present invention also relates to the use of the varnish of the present invention as an overprintable varnish in a sublimation and / or heat transfer technology.
- the varnish may, after it has been deposited on a substrate (previously printed or not) and then hardened, be advantageously used for the customization step or steps on all or part of the surface of the varnish.
- the said varnish thus makes it possible to perform this or these customization steps using various printing technologies well known to those skilled in the art such as heat transfer and / or sublimation.
- the present invention therefore also relates to the use of the varnish of the present invention as a laminatable varnish.
- the varnish may, after it has been deposited on a substrate (previously printed or unprinted) and then hardened, be used before the removal by a lamination process of a film on all or part of the surface of the varnish .
- the said varnish thanks to its resistance to high pressure and its sensitivity to heat (promoting adhesion) in the standard temperature range of the lamination process (generally between 100 and 200 ° C), then allows the adhesion of the film on the substrate (printed or not) so that the resistance to delamination is between 4 and 20 N / cm (measured according to ISO / IEC 10373-1 as taught on the day of filing of the present application), for example between 6 and 15 N / cm.
- the present invention also relates to the use of the varnish of the present invention - when the composition of said varnish comprises at least one pigment and / or dye as defined below - directly as a laminatable ink and / or on- printable (by sublimation and / or heat transfer technology).
- This new use is particularly interesting industrially because it allows through the inkjet printing of a single composition according to the present invention to combine the properties of ink and varnish and thus to meet the requirements of the desired use.
- the present invention relates to a protective varnish intended to cover the surface of a substrate, said substrate being able for example and without limitation being blank or previously printed.
- This varnish is made without solvent; this varnish is therefore preferably free of water and of organic solvent such as, for example, methyl isobutyl ketone, methyl ethyl ketone, dimethyl ketone, isopropyl alcohol, isobutyl alcohol, n-butyl alcohol, ethyl acetate, n-butyl acetate, ethyl cellosolve, butyl cellosolve and other similar solvents.
- organic solvent such as, for example, methyl isobutyl ketone, methyl ethyl ketone, dimethyl ketone, isopropyl alcohol, isobutyl alcohol, n-butyl alcohol, ethyl acetate, n-butyl acetate, ethyl cellosolve, butyl cellosolve and other
- the said varnish therefore comprises in its composition at least one curable oligomer, a hardenable monomer and a photoinitiator.
- At least one of the curable monomers is preferably an alkoxylated and / or polyalkoxylated acrylic monomers comprising one or more di or tri-acrylates.
- At least one curable oligomer is selected from polyesters - preferably hexafunctional - and / or hexafunctional aliphatic acrylate urethanes, and / or epoxy resins.
- This particular curable oligomer (s) represents (s) at least 75% by total weight of curable oligomers, preferably at least 95% by total weight of curable oligomers or even all of them. curable oligomers composing the varnish according to the present invention.
- the curable oligomer or mixture of curable oligomers is intended to increase the flexibility and flexibility of the varnish composition.
- This curable oligomer is associated in the composition of varnish with one or preferably more curable monomers which participate in other properties of the varnish.
- this curable oligomer makes it possible to obtain a varnish deposited for example by means of an ink jet machine on a substrate, which substrate will subsequently be compatible with printing machines using thermal transfer technology or sublimation of ink.
- the curable oligomers have a viscosity greater than 1 Pa.s at 23 ° C.
- the curable oligomer and / or the mixture of oligomers are intended to increase the reactivity of the composition of the varnish and the chemical and physical resistance thereof, such as scratching.
- This oligomer is associated in the composition of the varnish with different monomers that participate in other properties of the varnish.
- the weight ratio between curable oligomer and curable monomer in the varnish composition has a value between 1/2 and 1/6 depending on the oligomer or the mixture of curable oligomers used (s); this ratio by weight is preferably greater than 1/5 and / or less than 1/3; for example, this ratio by weight is of the order of 1/4.
- the choice of the curable oligomer may change.
- the viscosity of the curable oligomer is preferably between 5 and 70 Pa.s, or even more preferably between 20 and 60 Pa.s at 25 ° C.
- the choice of the oligomer will be oriented towards a polyester acrylate, preferably a polyester hexafunctional acrylate, for example a hexafunctional polyester acrylate commonly available under the name EBECRYL 870.
- acrylate polyesters CN2295, CN291, CN293 and Ebecryl 830 Mention may also be made, by way of example, of the acrylate polyesters CN2295, CN291, CN293 and Ebecryl 830.
- the polyester acrylate may be replaced by - or advantageously mixed with the hexafunctional aliphatic urethane acrylate, available under the reference EBECRYL 5129.
- the use of this oligomer will be preferred when greater scratch and solvent resistance properties of the varnish will be sought.
- Nonlimiting examples include the hexafunctional aliphatic acrylate urethanes CN9210, CN9215, Ebecryl 8254 and Ebecryl 1290.
- the curable oligomer may also be chosen from epoxy resins which are advantageously adapted to the purpose (s). s) of the invention.
- epoxy oligomers mentioned above.
- the use of such oligomers advantageously makes it possible to obtain lacquers resistant to delamination; in particular, varnishes comprising such oligomers have properties of particularly high surface tensions, for example greater than 19 mN / m at 25 ° C.
- mixtures of curable oligomers and in particular mixtures comprising the various curable oligomers mentioned above (or hereinafter), so that the composition of the mixture makes it possible to obtain a varnish with common or even intermediate properties.
- the curable oligomers represent from 5 to 25% by weight of the varnish, for example from 10 to 25% by weight of the varnish, for example of the order of 15% by weight of the varnish. These proportions remain the same if a mixture of two (or more) oligomers is used in the composition of the varnish.
- the curable oligomers are not hyperbranched oligomers (also referred to as dendrimers).
- additional curable oligomers that could also enter the Varnish compositions of the present invention include, for example, urethane and / or polyester compounds which do not fall within the definition of the particular essential oligomers of the present invention; if they are used, these additional curable oligomers will be taken into account in the weight calculations relating to all the curable oligomers.
- curable monomers which complement the composition of the varnish, in addition to having curing capabilities are selected with respect to their properties.
- At least one of the curable monomers is an alkoxylated and / or polyalkoxylated acrylic monomer comprising one or more di or tri-acrylates.
- This type of monomer makes it possible to increase the reactivity of the varnish and will be called “monomer of reactivity function" of the varnish in the present description and the claims which follow.
- curable di or tri-acrylate monomers mention may be made of hexanediol di-acrylate, known under the name HDDA.
- Reactivity functional monomers may represent all of the curable monomers of the varnish of the present invention.
- the monomers of reactivity function represent from 15 to 40% by weight of the varnish, for example from 15 to 30% by weight of the varnish, for example of the order of 25% by weight of the varnish.
- di-acrylate monomers mention may also be made of dipropylene glycol diacrylate, tripropylene glycol diacrylate, polyethylene glycol diacrylate, propoxylated neopentyl glycol diacrylate, esterdiol diacrylate (EDDA) and / or triethylene glycol diacrylate (TIEGDA).
- tri-acrylate monomers mention may also be made of trimethylol propane tri-acrylate, propoxylated glycerol tri-acrylate, propoxylated (3) trimethylolpropane triacrylate (TMP3POTA), and / or ethoxylated (6). ) trimethylolpropane triacrylate (TMP6EOTA).
- TMP3POTA propoxylated glycerol tri-acrylate
- TMP6EOTA trimethylolpropane triacrylate
- the monomer (s) of function which ensures the adhesion to the support named (“monomer function adhesion") of the varnish in the present description and the following claims.
- N-vinylcaprolactam is a preferred example which considerably improves the adhesion of the varnish to substantially rigid surfaces such as plastics or PVCs (polyvinyl chlorides).
- the adhesion function monomer may represent from 10 to 25% by weight of the varnish, preferably from 8 to 15% by weight of the varnish, for example of the order of 10% by weight of the varnish.
- the varnish comprises in addition to the curable oligomer or mixture of oligomers and the photoinitiator, at least two curable monomers, the first one (s) being chosen from the monomers of function reactivity and the second (s) being chosen (s) from the monomers of function adhesion.
- viscosity function monomer varnish in the present description and the claims which follow.
- aliphatic acrylate alkyls having more than five carbon atoms for example, octyl-decyl acrylate (which also has the property of restricting surface tension in the varnish) and 3,3,5, trimethyl cyclohexanol acrylate, respectively known are the names of EBECRYL ODA and SR 420.
- the viscosity functional monomer may represent from 5 to 25% by weight of the varnish, preferably from 12 to 18% by weight of the varnish, for example of the order of 15.6% by weight of the varnish.
- viscosity functional monomer mention may also be made of 2 (2ethoxyethoxy) ethyl acrylate (EOEOEA), Tetrahydrofurfuryl acrylate (THFA), octyl acrylate, isodecyl acrylate (IDA), 3, 3,5 trmethyl cyclohexyl acrylate (TMCHA), Iso octyl acrylate (IOA), Tridecyl acrylate (TDA), 2- (2-ethoxyethoxy) ethyl acrylate, and / or Cyclic Trimethylopropane Formal Acrylate (CTFA).
- EEOEA Tetrahydrofurfuryl acrylate
- THFA Tetrahydrofurfuryl acrylate
- the varnish comprises in addition to the curable oligomer and the photoinitiator, at least three curable monomers, the first one (s) being selected from the monomers of reactivity function, the second (s) being chosen from the adhesion function monomers, and the third (s) being chosen from the viscosity function monomers.
- curable monomers that can complement the lacquer composition include the polyvalent functional monomer (s), referred to as the "polyvalent function monomer” of the varnish herein, and the claims that follow. Indeed, this type of “polyvalent function monomer” may have several simultaneous functions, for example an effect on viscosity and / or adhesion and / or other complementary properties.
- polyvalent function monomer may have several simultaneous functions, for example an effect on viscosity and / or adhesion and / or other complementary properties.
- the family of curable monomers of the cycloalkyl acrylate type in particular isobornyl acrylate (IBOA).
- IBOA isobornyl acrylate
- These additional curable monomers may represent from 15 to 25% by weight of the varnish, preferably from 18 to 22% by weight of the varnish, for example of the order of 20% by weight of the varnish.
- the varnish will thus comprise, in addition to the three types of monomers described above, at least one fourth polyvalent functional monomer.
- the polymerization reaction when the varnish is sprayed onto the surface of the substrate is initiated by at least one photoinitiator which can be of depth or surface.
- photoinitiators are, for example, Additol ITX, which correspond to 2-iso-propyl-thioxanthone and / or Nrgacure 907, which corresponds to 2-methyl-1 -4-methylthiophenyl-2-4-morpholinylpropanone. .
- These photoinitiators allow the triggering of the reaction polymerization of the varnish only in the presence of UV radiation.
- the absorption peaks used to ensure the formation of free radicals which initiate the polymerization of the varnish generally have a wavelength of the order of 300 to 390 nm for the Additol ITX and a wavelength of the order from 230 to 304 nm for the Irgacure 907. This radiation can be ensured, for example, through a device disposed in the printing system that uses the varnish.
- photoinitiators may represent less than 20% by weight of the varnish, preferably 8 to 15% by weight of the varnish, for example of the order of 12% by weight of the varnish.
- the varnish comprises Additol ITX and Irgacure 907, respectively with Additol ITX which represents from 4.0 to 10.0% by weight of the varnish, for example order of 7.2% by weight of the varnish, and Irgacure 907 which represents from 2.0 to 4.9% by weight of the varnish, for example 4.9% by weight of the varnish.
- Additol ITX which represents from 4.0 to 10.0% by weight of the varnish, for example order of 7.2% by weight of the varnish
- Irgacure 907 which represents from 2.0 to 4.9% by weight of the varnish, for example 4.9% by weight of the varnish.
- photoinitiator mention may also be made of 2,4,6-trimethylbenzophenone, 4-methylbenzophenone, benzyldimethylketal, 2-hydroxy-2-methyl-1-phenyl-1-propanone, and or ethyl-4-dimethylamino benzoate.
- the composition of the lacquer according to the present invention can advantageously include a surfactant which may, for example, be the mixture listed under the name Tego Wett 500.
- the surfactants used can be such as, for example and without limitation, although preferred, surfactant "without silicone".
- the surfactant may represent less than 3% by weight of the varnish, preferably from 0.1 to 2.0% by weight of the varnish, for example of the order of 1.0% by weight of the varnish.
- the varnish according to the present invention may incorporate an antioxidant which acts as a free radical inhibitor.
- the antioxidant can represent less than 3% by weight of the varnish, preferentially from 0.1 to 2.0% by weight of the varnish, for example of the order of 1.0% by weight of the varnish.
- the varnish (for coating the surface of a substrate and deposited by ink jet) has a composition which comprises at least:
- These five components preferably represent at least 70% by weight of the varnish, preferably at least 85% by weight, for example at least 95% by weight, or even the totality of the varnish of the present invention.
- Genorad 16 which is present in a proportion of 0.1 to 2.0%, preferably in a proportion of 1.0% of the final mixture,
- the surfactant, Tego Wett 500 which is present in a proportion of 0.1 to 2.0%, preferably in a proportion of 1.0% of the final mixture,
- depth and / or surface photoinitiators are present in a proportion of 8 to 15%, preferably in a proportion of 12%, with respectively Additol ITX in a proportion of 4.0 to 10.0%, preferably 7.2% and Nrgacure 907 in a proportion of 2.0 to 4.9%, preferentially 4.9% of the final mixture,
- the functional monomer which ensures adhesion to the support that is to say N-vinylcaprolactam, is present in a proportion of 8 to 15%, preferably in a proportion of 10% of the final mixture,
- the polyvalent functional monomer that is to say the isobornyl acrylate (IBOA)
- IBOA is present in a proportion of 15 to 25%, preferably in a proportion of 20% of the final mixture
- the functional monomer which improves the reactivity of the mixture that is to say hexanediol di-acrylate (HDDA)
- HDDA hexanediol di-acrylate
- the functional monomer which makes it possible to reduce the surface tension and the viscosity that is to say the EBECRYL ODA, is present in a proportion of 12 to 18%, preferably in a proportion of 15.6% of the final mix.
- the heat-sensitive oligomer for example a polyester acrylate and / or a hexafunctional aliphatic urethane acrylate, that is to say respectively EBECRYL 870 or EBECRYL 5129, and / or the epoxy resin, is present in a proportion of 5 to 25% by weight of the resin, for example from 10 to 25%, preferably in a proportion of 15% of the final mixture. These proportions remain the same if a mixture of two of these oligomers is produced.
- matting agents can be made to the mixture.
- the varnish for coating the surface of a substrate and deposited by inkjet is characterized in that the varnish composition comprises at least one coloring agent. This makes it possible to give the ink a particular color.
- the coloring agent may be chosen from dyes, pigments or a combination of the pigments and / or dyes.
- the coloring agent represents from 0.1 to 35% by weight of the varnish, preferably from 1 to 10% by weight of the varnish. These higher concentrations of coloring agent generally concern white dyes.
- the clearcoat coatings have a preferred concentration of 0% of coloring agent.
- Suitable pigments include, but are not limited to those known as Blue Pigment (e.g. Blue Pigment 1, 15, 15: 1, 15: 2, 15: 3, 15: 4, 15: 6 , 16, 24 or 60), Brown Pigment (eg Brown Pigment 5, 23 or 25), Yellow Pigment (eg Yellow Pigment 3, 14, 16, 17, 24, 65, 73, 74, 83, 95 , 97, 108, 109, 1 10, 1 13, 120, 128, 129, 138, 139, 150, 154, 156 or 175), green pigment (e.g., Green Pigment 1, 7, 10 or 36), Pigment Orange (eg Orange Pigment 5, 15, 16, 31, 34, 36, 43, 48, 51, 60, 61 or 71), Red Pigment (eg Red Pigment 4, 5, 7, 9, 22, 23, 48, 48: 2, 49, 12, 122, 123, 149, 166, 168, 170, 177, 179, 190, 202, 206, 207 or 224), Pigment Violet (e.g.
- Blue Pigment e.
- Pigment Violet 19, 23, 32, 37 or 42 Black Pigment (eg Black Pigment 6 or 7) - numbered colored pigments corresponding to "Color Index, Volumes 1-8, published by the Dye and Color Society, Yorksh Ireland, England; mention will also be made of Black PB 2 and 5; carbon black; titanium dioxide (including rutile and anatase); zinc sulphide; or a mixture of two or more of the aforementioned pigments.
- a pigment is used in the ink compositions of the present invention, it will be preferred to pre-disperse said pigment in one or more of the curable and / or curable oligomeric monomers prior to incorporation of the latter (s). (s) in the varnish.
- dispersing agents to improve the stability of the pigment dispersion; in fact, these dispersing agents make it possible to reduce or even avoid any phenomenon of depositing and / or agglomeration of the pigments.
- the present invention therefore also relates to the use of the varnish of the present invention - when the composition of said varnish comprises at least one pigment and / or dye as defined below - directly as a laminatable ink and / or on -Printable (in sublimation and / or heat transfer technology).
- This new use is particularly interesting industrially because it allows through the inkjet printing of a single composition according to the present invention to combine the properties of ink and varnish and thus to meet the requirements of the desired use.
- the varnish may include in its composition at least one resin - different from the curable oligomeric type resins already mentioned above - selected from acrylic resins, vinyl resins, ketone resins, polyesters, and aldehydes.
- This resin may be added to the composition in a proportion of about 5 to 10% by weight of the final mixture.
- the choice of the resin is a function of the support and according to the desired result.
- These resins have, for example, as properties to improve the chemical resistance of the final composition and the mechanical strength of the deposited varnish.
- An example of a vinyl resin capable of providing adhesion properties to the substrate may be the resin known under the reference VYHH.
- the production of the varnish according to the invention is carried out by successively performing: a step of mixing the viscosity reducer with the free radical inhibitor and a photoinitiator at a temperature of between 150 and 300 ° C., depending on the speed of the desired mixture,
- the surfactant is added last to prevent foaming during agitation of the components being mixed.
- defoaming agents may be added to the mixture, such as polyether siloxane. This de-foaming or anti-foaming agent is thus added in a proportion of 0.1 to 1.0% by weight of the varnish, preferably 0.3% by weight.
- An example of antifoam agent that can be used is Tego Foamex 805.
- the varnish (for coating the surface of a substrate and deposited by ink jet) has a composition which comprises at least:
- the production process may also comprise a step of filtering the mixture obtained according to a particle size adapted to pass through a nozzle during an ink jet deposition on the substrate.
- the ink jet deposit can be carried out according to any known technique of ink jet deposition, preferably the drop on demand (DOD) technique, which consists in forming an overpressure using a piezoelectric component that will curl under the effect of a voltage to reduce the volume of the ink tank. Indeed, the projection of the varnish operating via a nozzle, it is imperative that the particle size of the varnish components does not cause obstruction of the nozzle.
- the filtration is carried out at a particle size less than or equal to 10 ⁇ , preferably at 5 ⁇ and optimally at 1 ⁇ .
- the varnish for covering the surface of a substrate and deposited by ink jet is characterized in that the proportion ratio between oligomer and monomer is between 1/5 and 1/3, for example of the order of 1/4.
- the varnish for covering the surface of a substrate and deposited by inkjet is characterized in that the varnish is suitable for printing by thermal transfer or sublimation.
- the varnish for coating the surface of a substrate and deposited by inkjet is characterized in that the curable oligomer is a mixture of an oligomer selected from a group of the polyester family and / or a hexafunctional aliphatic urethane acrylate and / or an epoxy resin, the proportion ratio between oligomer and monomer being preferably between 1/5 and 1/3, for example of the order of 1/4.
- the varnish for coating the surface of a substrate and deposited by ink jet is characterized in that the varnish comprises an antioxidant which acts as a free radical inhibitor to prevent varnish mass under the action of heat in the undesired conditions, and an octyl-decyl acrylate or a trimethyl cyclohexanol acrylate to allow a reduction in the viscosity of the varnish
- the varnish for coating the surface of a substrate and deposited by inkjet is characterized in that the varnish composition comprises at least:
- the varnish for coating the surface of a substrate and deposited by inkjet is characterized in that the mixture of the components of the varnish has a conductivity of less than 0.8 ⁇ S.
- the varnish for coating the surface of a substrate and deposited by ink jet is characterized in that the photoinitiator comprises at least 2-methyl-1,4-methylthiophenyl-2-4 morpholinyl-propanone.
- the varnish for coating the surface of a substrate and deposited by inkjet is characterized in that the photoinitiator comprises at least 2-isopropyl thioxanthone.
- the varnish for coating the surface of a substrate and deposited by inkjet is characterized in that the varnish comprises N-vinylcaprolactam for adhering the varnish to the surface of the printed substrate.
- the varnish for coating the surface of a substrate and deposited by inkjet is characterized in that the curable oligomer comprises at least one hexa-functional polyester acrylate.
- the varnish for coating the surface of a substrate and deposited by inkjet is characterized in that the curable oligomer comprises at least one epoxy resin. In some embodiments, the varnish for coating the surface of a substrate and deposited by inkjet is characterized in that the curable monomer comprises at least one hexanediol diacrylate
- Another object of the invention is to provide a method for producing a varnish according to the invention.
- This objective is achieved by a process for producing a varnish for coating the surface of a substrate and deposited by ink jet, the method comprising:
- the process comprises a step of addition with stirring of at least one curable oligomer according to the composition of the varnish, selected from a group of the family of polyesters and / or aliphatic urethane acrylate hexa-functional and / or of epoxy resin.
- the process for producing a varnish for covering the surface of a substrate and deposited by ink jet is characterized in that the process comprises a step of filtering the mixture obtained according to a particle size adapted for the passage in a nozzle during an ink jet deposition on the substrate.
- the determination of the physical parameters of the components or of the composition of the application is carried out at the indicated temperatures and under conditions of pressures customary to the earth's surface, preferentially of the order of one atmosphere (1013 mBar).
- This is how the viscosity can be measured with a HAAKE Viscotester viscometer 550 equipped with a Cup NV and a Rotor NV which are known measuring instruments, marketed by the company ThermoFisher, involving a temperature control system, connected to a thermostatic bath, keeps the sample of varnish at a minimum.
- the surface tension is measured using a tensiometer DSA 100 with the method of the hanging drop, marketed by KRÜSS.
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
- Paints Or Removers (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1253746A FR2989688B1 (en) | 2012-04-24 | 2012-04-24 | INJECTABLE TRANSFERABLE VARNISH COMPOSITION SUITABLE FOR SUBLIMABLE INK OR THERMAL TRANSFER |
PCT/EP2013/058561 WO2013160384A1 (en) | 2012-04-24 | 2013-04-24 | Varnish composition transferable by inkjet suitable for sublimable or thermal-transfer ink |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2841508A1 true EP2841508A1 (en) | 2015-03-04 |
Family
ID=48463929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13723424.1A Withdrawn EP2841508A1 (en) | 2012-04-24 | 2013-04-24 | Varnish composition transferable by inkjet suitable for sublimable or thermal-transfer ink |
Country Status (4)
Country | Link |
---|---|
US (1) | US9422449B2 (en) |
EP (1) | EP2841508A1 (en) |
FR (1) | FR2989688B1 (en) |
WO (1) | WO2013160384A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109306203A (en) * | 2017-07-26 | 2019-02-05 | 精工爱普生株式会社 | Sublimation transfer inkjet ink composition and sublimation transfer ink jet recording method |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170298240A1 (en) * | 2016-04-13 | 2017-10-19 | Inx International Ink Co. | Solvent-uv hybrid inkjet ink for aluminum beverage can decoration |
US10189271B2 (en) | 2016-08-18 | 2019-01-29 | Eastman Kodak Company | Non-foaming aqueous particle-free inkjet ink compositions |
US10138386B2 (en) | 2016-08-18 | 2018-11-27 | Eastman Kodak Company | Method of inkjet printing a colorless ink |
EP4286483A1 (en) | 2022-05-31 | 2023-12-06 | Agfa Nv | Inkjet printing methods |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002046323A2 (en) * | 2000-12-06 | 2002-06-13 | Printar Ltd. | Uv curable ink-jet legend ink for printing on printed circuit boards |
US20050176841A1 (en) * | 2003-12-30 | 2005-08-11 | Krohn Roy C. | UV curable ink compositions |
US7279506B2 (en) * | 2004-05-05 | 2007-10-09 | Xerox Corporation | Ink jettable overprint compositions |
KR100724797B1 (en) * | 2005-10-10 | 2007-06-04 | 에스에스씨피 주식회사 | Low viscosity multi-functional urethaneacrylate oligomer-containing high solid uv curable coating composition |
US20080090929A1 (en) * | 2006-10-13 | 2008-04-17 | Hexion Specialty Chemicals, Inc. | Ink compositions and methods of use thereof |
FR2940657B1 (en) * | 2008-12-30 | 2011-01-21 | Mgi France | VARNISH COMPOSITION FOR SUBSTRATE PRINTED BY INK JET. |
CA2750305A1 (en) * | 2009-01-26 | 2010-07-29 | Sun Chemical Corporation | Uv curable ink for a plastic glazing system |
US8889232B2 (en) * | 2009-08-20 | 2014-11-18 | Electronics For Imaging, Inc. | Radiation curable ink compositions |
FR2989687B1 (en) * | 2012-04-24 | 2016-10-28 | Mgi France | LOW VISCOSITY VARNISH COMPOSITION FOR INKJET PRINTED SUBSTRATE |
-
2012
- 2012-04-24 FR FR1253746A patent/FR2989688B1/en active Active
-
2013
- 2013-04-24 WO PCT/EP2013/058561 patent/WO2013160384A1/en active Application Filing
- 2013-04-24 US US14/395,843 patent/US9422449B2/en active Active
- 2013-04-24 EP EP13723424.1A patent/EP2841508A1/en not_active Withdrawn
Non-Patent Citations (2)
Title |
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None * |
See also references of WO2013160384A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109306203A (en) * | 2017-07-26 | 2019-02-05 | 精工爱普生株式会社 | Sublimation transfer inkjet ink composition and sublimation transfer ink jet recording method |
CN109306203B (en) * | 2017-07-26 | 2022-01-14 | 精工爱普生株式会社 | Ink jet ink composition for sublimation transfer and sublimation transfer ink jet recording method |
Also Published As
Publication number | Publication date |
---|---|
FR2989688B1 (en) | 2016-09-30 |
US20150126638A1 (en) | 2015-05-07 |
FR2989688A1 (en) | 2013-10-25 |
US9422449B2 (en) | 2016-08-23 |
WO2013160384A1 (en) | 2013-10-31 |
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