US20200071551A1 - Low odor radiation curable ink compositions - Google Patents
Low odor radiation curable ink compositions Download PDFInfo
- Publication number
- US20200071551A1 US20200071551A1 US16/678,499 US201916678499A US2020071551A1 US 20200071551 A1 US20200071551 A1 US 20200071551A1 US 201916678499 A US201916678499 A US 201916678499A US 2020071551 A1 US2020071551 A1 US 2020071551A1
- Authority
- US
- United States
- Prior art keywords
- acrylate
- ink composition
- pigment
- ink
- diacrylate
- 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.)
- Abandoned
Links
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
- 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
- C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
-
- 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
- C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09D11/107—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
-
- 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
- C09D11/32—Inkjet printing inks characterised by colouring agents
- C09D11/322—Pigment inks
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/58—Polymers or oligomers of diolefins, aromatic vinyl monomers or unsaturated acids or derivatives thereof
Definitions
- the ink composition includes a polymerizable monofunctional monomer 4-hydrobutylacrylate and excludes monofunctional monomers that have distinct odors.
- Inkjet inks used for drop on demand (DOD) printing need to use low viscosity materials to yield a viscosity of up to approximately 12 cP at jetting temperatures.
- Monomers have low molecular weight and high vapor pressure. Many of the monomers used in the inkjet inks have distinct odors that can lead to taint when used on secondary or tertiary packaging.
- Monomers may have multiple acrylate groups.
- the higher number of acrylate groups leads to a polymer with a higher degree of cross linking, which reduces odor.
- a higher degree of cross linking also leads to a faster curing material and a harder material.
- higher cross linking will lead to a more brittle ink which will not be acceptable for application that requires bending of the ink layer without cracking such as in corrugated board where creasing is required.
- This invention addresses the need for a fast curing, flexible, low odor ink, particularly for use in single pass printing of paper based corrugated stock such as cardboard boxes.
- the present invention provides an ink that has a very low odor and good flexibility.
- the ink is curable by actinic radiation, more specifically using LEI) generated light.
- the ink is designed to be suitable for packaging, particularly for single pass printing on paper-based corrugated material.
- the ink exhibits minimal odor in the wet state and in the fully cured state.
- the present invention provides a low odor radiation curable ink composition.
- Low odor is defined by the response of a panel of people who are not habituated to the printed article. Low odor does not have a strong smell or an undesired smell, and is in general acceptable to people.
- the ink composition comprises: 10-40% w/w of 4-hydrobutylacrylate (4HBA), 5-25% of one or more urethane (meth)acrylate oligomer, 10-55% of diacrylates, one or more photoinitiators, and one or more additives.
- the present ink composition provides a low viscosity of about 8-14 at 45° C. which is required to be able to jet from the printer head.
- the present ink composition excludes monofunctional monomers that have an undesired odor such as vinyl caprolactam, 2-phenoxyethyl acrylate, isodecyl acrylate, 3,3,5-trimethylcyclohexyl acrylate, isooctyl acrylate, octyldecyl acrylate, isobornyl acrylate, cycloaliphatic acrylate monomer, benzyl acrylate, di(ethylene glycol) 2-ethylhexyl acrylate, tridecyl acrylate, 2(2-ethoxyethoxy) ethyl acrylate, lauryl acrylate, and tetrahydrofurfuryl acrylate.
- monofunctional monomers such as vinyl caprolactam, 2-phenoxyethyl acrylate, isodecyl acrylate, 3,3,5-trimethylcyclohexyl acrylate, isooctyl acrylate, oct
- the ink composition does not contain a substantial amount of the undesired monofunctional monomers.
- a substantial amount refers to at least 5%, preferably at least 1%, at least 0.3%, or at least 0.1%.
- the present composition uses a limited number of monoactylates that have been identified as low odor, in combination with 4-HBA. These compounds have acceptably high cure rates in combination with a diacrylate at a sufficiently low level to enable a fast cure rate with sufficient flexibility and with an acceptably low odor for applications such as tertiary packaging.
- the present invention is also directed to paper based corrugated stock such as a cardboard box having the fast curing, flexible, low odor ink composition printed and cured on its surface.
- the present ink composition comprises 10-50%, by weight of one or more mono-functional monomers that have no odor and acceptable low odor. Mono-functional monomers do not crosslink with each other and provide flexibility of ink film after curing.
- 4-Hydroxybutyl acrylate (4HBA, CAS No.: 2478-10-6), which is a polymerizable monofunctional monomer, is an essential mono-functional monomer in the present ink composition.
- 4HBA has a low viscosity and has low odor; it has sufficiently high flexibility with a high cure rate.
- 4HBA with a primary hydroxyl group at the end of a longer alkyl chain, gives excellent scratch resistance due to its high crosslinking ratio and unique flexibility.
- the present ink composition comprises 10-40% why of 4HBA, and preferably 15-30% or 15-25% 4HBA.
- the present ink composition optionally includes other low-odor mono functional monomers.
- mono-functional monomers include acrylates or methacrylates.
- mono-functional monomers include a vinyl ether.
- suitable mono-functional monomers for the present ink composition include, but are not limited to, cyclic trimethylolpropane formal acrylate (SR531), Genomer 1122 (a urethane acrylate) from RAHN, ethyl vinyl ether, and mono-functional methoxylated PEG (350) acrylate (SR55 alkoxylated phenol acrylate monomer (SR9087), alkoxylated tetrahydrofurfuryl acrylate (SR611), ethoxylated (4) nonyl phenol acrylate (SR504), and ethoxylated (8) nonyl phenol acrylate (Miramer M166 from RAHN).
- SR531 cyclic trimethylolpropane formal acrylate
- Genomer 1122
- Monomers that have odor and are excluded from the present ink composition are shown in Table 1.
- Monofunctional acrylates are important components for the present ink composition because they provide sufficient flexibility of the ink. Monofunctional acrylates have only one acrylate group, and if they exhibit a strong odor, they are most prone to leaving a residual odor in the cured product because they do not crosslink completely into the film and are volatile.
- the present ink composition comprises 10-55%, preferably 30-55%, of acceptable low odor or no odor di-functional monomers to speed up the polymerization process and increase the chemical resistance.
- suitable di-functional monomer include, but are not limited to, diacrylate or dimethacrylate of diols and potyetherdiols, such as propoxylated neopentyl glycol diacrylate, 1, 6-hexanediol diacrylate, dipropylene glycol diacrylate, tripropylene glycol diacrylate, triethylene glycol diacrylate, 1,4-butanediol diacrylate (e.g, SR213), alkoxylated aliphatic diacrylate (e.g.
- SR9209A diethylene glycol diacrylate, alkoxylated hexanediols diacrylates (e.g, SR561, SR 562, SR563, SR564 from Sartomer Co., Inc), polyethylene glycol (200) diacrylate (SR259), and polyethylene glycol (400) diacrylate (SR344).
- alkoxylated hexanediols diacrylates e.g, SR561, SR 562, SR563, SR564 from Sartomer Co., Inc
- polyethylene glycol (200) diacrylate SR259
- polyethylene glycol (400) diacrylate SR344
- Preferred diacrylates for the present ink composition includes propoxylated neopentyl glycol diacrylate (CAS No: 84170-74-1), dipropylene glycol diacrylate (CAS No: 57472-68-I). and tripropylene glycol diacrylate (CAS No: 42978-66-5).
- an oligomer component of low viscosity, low volatility, high reactivity, low glass transition temperature, and good adhesion to multiple substrates in the ink compositions is preferable to use.
- the functionality of the oligomer component is preferably not greater than 3, and more preferably not greater than 2. The low functionality contributes to more flexible ink compositions.
- the present ink composition comprises at least 5%, preferably at least 10%, and up to 25% (for example, 10-25%) of a flexible urethane acrylate oligomer.
- Urethane acrylate oligomers suitable for the present ink composition include CN9009, CN990, CN991, from Sartomer, Ebercryl 8402, Ebersryl 8411 from Allnex, Genomer 4215, Genomer 4230 and Geonmer 4267 from RAHN, Miramer PU2100, Miramer PU2200 from MIWON, Photomer 6891, Photomer 6892 and Photomer 6230 from IGM, NeoRad U-61 and NeoRad U-20 from DSM.
- the ink composition of the present invention comprises 1-15% by weight of one or more photoinitiators.
- Acyl phosphine oxide photoinitiators include diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (TPO), phenylbis(2,4,6-trimethylbenzoyl)-phosphine oxide (Irgacure 819), ethyl (2,4,6-trimethylbenzoyl)-phenylphosphine oxide (TPO-L), and their derivatives and polymeric version derivatives.
- the present ink composition may comprise other photoinitiators such as thioxanthones: 2-isopropyl thioxanthone, 2-chlorothioxanthone, 2-methylthioxanthone, 2-ethylthioxanthone, 2-tert-butylthioxanthone, 2-phenylthioxanthone, 2-benzylthioxanthone, 2-benzylthioxanthone, and 4-isopropytthioxanthone, polymeric thioxanthones.
- thioxanthones 2-isopropyl thioxanthone, 2-chlorothioxanthone, 2-methylthioxanthone, 2-ethylthioxanthone, 2-tert-butylthioxanthone, 2-phenylthioxanthone, 2-benzylthioxanthone, 2-benzylthioxanthone, and 4-isopropytthio
- Suitable blends of photoinitiators commercially available include, but are not limited to, those under the designations of Darocur 4265, Irgacure 2022, and Irgacure 2100 from BASF; and Esacure KT37, Esacure KT55, and Esacure KTO46 IGM.
- the present ink composition may further include 0.01-5%, preferably 0.1-3% by weight of one or more additive components.
- Various additives may be included in the ink compositions, including one or more of a surfactant, a leveling additive, a stabilizer, and other suitable additives.
- a surfactant is used to reduce the surface tension of the ink compositions to improve wetting property of the inks on substrates.
- the amount of surfactant in the ink compositions is 0.01-2% by weight, and preferably 005-1% by weight. It is preferred that the surfactant comprises at least one polysiloxane acrylate, also known as a silicone acrylate, which participates in the radiation curing process to be part of cured ink.
- a suitable surfactant examples include, but are not limited to, those under the designations of TEGORAD 2200N, TEGORAD 2100, and TEGORAD 2300 from Evonik Resource Efficiency GmbH, TEGO Products and BYK 307, BYK 330, BYK 377 and BYK 3510 (BYK CHEMIE GMBH (Wesel, FRG).
- a leveling additive may be used to improve the flowing property of ink to produce a more uniform surface of ink film.
- the amount of leveling agent in the ink compositions is 0.1-2% by weight.
- suitable leveling agent include, but are not limited to, those under the designation of BYK 361N, BYK 353, and BYK 354 and so on, (BYK CHEMIE GMBH).
- a stabilizer is used to improve the shelf life and photolytic stability of ink compositions.
- Stabilizers in the ink compositions can include an ultraviolet light stabilizer and hindered amine light stabilizer. These stabilizers are used to improve the outdoor durability and weatherability of cured ink.
- Commercially available ultraviolet light stabilizers include, but are not limited to, those under the designation of TINUVIN® 460, TINUVIN® 479, TINUVIN® 171, TINUVIN® 928, TINUVIN® 123, TINUVIN® 1130, TINUVIN® 400 TINUVIN® 152 and TINUVIN® 292 from BASF AG, Ludwigshafen, FRG.
- One or more UV inhibitor/stabilizers may be present in the ink compositions. They can be present in the ink compositions in amounts of 0.01%-2% by weight, and more specifically 0.1%-1% by weight.
- a free radical scavenger stabilizer is used to improve the stability of ink against heat.
- a free radical scavenger include, but are not limited to, hydroquinone, 4-methoxyphenol, hindered phenol, etc.
- the amount of free radial scavenger stabilizer can be present in ink compositions in 0.05-2% by weight, and more specifically 0.1-0.75% by weight. A small amount is preferably used in the ink compositions to minimize their interference with the radiation curing process.
- free radical scavengers include, but are not limited to, hydroquinone, 4-methoxyphenol, hindered phenol such as IRGASTAB® UV 22 (an in-can stabilizer that inhibits early polymerization in UV curable ink and coating formulations) from BASF, and IN515 (tris(N-nitroso-N-phenyl-hydroxylamine)-aluminum salt+92% 2-phenoxyethyl acrylate) from IGM.
- IRGASTAB® UV 22 an in-can stabilizer that inhibits early polymerization in UV curable ink and coating formulations
- IN515 tris(N-nitroso-N-phenyl-hydroxylamine)-aluminum salt+92% 2-phenoxyethyl acrylate
- the present ink composition may further comprise a colorant component if color is desired.
- the colorant can be pigments, dyes, or a combination of pigments and/or dyes.
- the amount of colorant component in the ink compositions is in the range of 0-20% by, more preferably 0-8% by weight.
- a clear ink has 0% colorant.
- Pigments include, but are not limited to, those under the designation of Pigment Blue 1, Pigment Blue 15, Pigment Blue 15:1, Pigment Blue 15:2, Pigment Blue 15:3, Pigment Blue 15:4, Pigment Blue 15:6, Pigment Blue 16, Pigment Blue 24, and Pigment Blue 60; Pigment Brown 5, Pigment Brown 23, and Pigment Brown 25; Pigment Yellow 3, Pigment Yellow 14, Pigment Yellow 16, Pigment Yellow 17, Pigment Yellow 24, Pigment Yellow 65, Pigment Yellow 73, Pigment Yellow 74, Pigment Yellow 83, Pigment Yellow 95, Pigment Yellow 97, Pigment Yellow 108, Pigment Yellow 109, Pigment Yellow 110, Pigment Yellow 113, Pigment Yellow 120, Pigment Yellow 128, Pigment Yellow 129, Pigment Yellow 138, Pigment Yellow 139, Pigment Yellow 150, Pigment Yellow 154, Pigment Yellow 156, and Pigment Yellow 175; Pigment Green 1, Pigment Green 7, Pigment Green 10, and Pigment Green 36; Pigment Orange 5, Pigment Orange 15, Pigment Orange 16, Pigment Orange 31, Pigment Orange 34, Pigment Orange
- Red 206, Pigment Red 207, and Pigment Red 224 Pigment Violet 19, Pigment Violet 23, Pigment Violet 37, Pigment Violet 32, Pigment Violet 42; and Pigment Black 6 or 7 (The Colour Index, Vols. 1-8, by the Society of Dyers and Colourists, Yorkshire, England), Black PB 2 and 5; carbon black; titanium dioxide (including rutile and anatase); zinc sulfide, and the like or a mixture thereof.
- the pigment is pre-dispersed prior to incorporation, generally into one or more of the monomer and/or oligomer components used in the ink compositions.
- the colorant is added as a pigment slurry prepared with a portion of a reactive diluent such as propoxylated 2-neopentyl glycol diacrylate (SR-9003, Sartomer USA, LLC).
- Dispersion agents generally are used to improve the stability of dispersion by reducing or avoiding the possibility of pigment particle settling or agglomerating.
- suitable dispersion agents include, but are not limited to, those under the designations of Solsperse 32000 from Lubrizol® Advanced Materials, and DisperBYK 111 and DisperBYK180 from Byk Chemi®.
- the pigment in the dispersion can be 20-80% by weight.
- Other additives such as stabilizers, flowing additive, etc. can be incorporated during the dispersion process to improve the stability of dispersion.
- Example 1 A Low Odor Ink Composition
- Table 1 shows the components for a low odor ink composition.
- the above ingredients were added to a container, and mixed by magnetic or mechanic mixers to form the cyan ink. Then the ink was filtered through 1 micron filter.
Abstract
Description
- This patent application is a continuation of U.S. application Ser. No. 15/472,630, filed on Mar. 29, 2017, which claims priority from U.S. Provisional Application No. 62/341,303, filed on May 25, 2016, each of which are incorporated herein by reference in their entirety.
- This invention relates to low odor radiation curable ink compositions. In particular, the ink composition includes a polymerizable monofunctional monomer 4-hydrobutylacrylate and excludes monofunctional monomers that have distinct odors.
- Inkjet inks used for drop on demand (DOD) printing need to use low viscosity materials to yield a viscosity of up to approximately 12 cP at jetting temperatures. Monomers have low molecular weight and high vapor pressure. Many of the monomers used in the inkjet inks have distinct odors that can lead to taint when used on secondary or tertiary packaging.
- Monomers may have multiple acrylate groups. The higher number of acrylate groups leads to a polymer with a higher degree of cross linking, which reduces odor. A higher degree of cross linking also leads to a faster curing material and a harder material. However, higher cross linking will lead to a more brittle ink which will not be acceptable for application that requires bending of the ink layer without cracking such as in corrugated board where creasing is required.
- This invention addresses the need for a fast curing, flexible, low odor ink, particularly for use in single pass printing of paper based corrugated stock such as cardboard boxes. The present invention provides an ink that has a very low odor and good flexibility. The ink is curable by actinic radiation, more specifically using LEI) generated light. The ink is designed to be suitable for packaging, particularly for single pass printing on paper-based corrugated material. The ink exhibits minimal odor in the wet state and in the fully cured state.
- The present invention provides a low odor radiation curable ink composition. Low odor is defined by the response of a panel of people who are not habituated to the printed article. Low odor does not have a strong smell or an undesired smell, and is in general acceptable to people. The ink composition comprises: 10-40% w/w of 4-hydrobutylacrylate (4HBA), 5-25% of one or more urethane (meth)acrylate oligomer, 10-55% of diacrylates, one or more photoinitiators, and one or more additives. The present ink composition provides a low viscosity of about 8-14 at 45° C. which is required to be able to jet from the printer head. The present ink composition excludes monofunctional monomers that have an undesired odor such as vinyl caprolactam, 2-phenoxyethyl acrylate, isodecyl acrylate, 3,3,5-trimethylcyclohexyl acrylate, isooctyl acrylate, octyldecyl acrylate, isobornyl acrylate, cycloaliphatic acrylate monomer, benzyl acrylate, di(ethylene glycol) 2-ethylhexyl acrylate, tridecyl acrylate, 2(2-ethoxyethoxy) ethyl acrylate, lauryl acrylate, and tetrahydrofurfuryl acrylate. By exclusion, it means that the ink composition does not contain a substantial amount of the undesired monofunctional monomers. “A substantial amount”, as used herein, refers to at least 5%, preferably at least 1%, at least 0.3%, or at least 0.1%.
- The present composition uses a limited number of monoactylates that have been identified as low odor, in combination with 4-HBA. These compounds have acceptably high cure rates in combination with a diacrylate at a sufficiently low level to enable a fast cure rate with sufficient flexibility and with an acceptably low odor for applications such as tertiary packaging.
- The present invention is also directed to paper based corrugated stock such as a cardboard box having the fast curing, flexible, low odor ink composition printed and cured on its surface.
- Unless specifically mentioned, all percentages (%) in this application refer to % by weight, unless otherwise specified.
- The present ink composition comprises 10-50%, by weight of one or more mono-functional monomers that have no odor and acceptable low odor. Mono-functional monomers do not crosslink with each other and provide flexibility of ink film after curing. 4-Hydroxybutyl acrylate (4HBA, CAS No.: 2478-10-6), which is a polymerizable monofunctional monomer, is an essential mono-functional monomer in the present ink composition. 4HBA has a low viscosity and has low odor; it has sufficiently high flexibility with a high cure rate. 4HBA, with a primary hydroxyl group at the end of a longer alkyl chain, gives excellent scratch resistance due to its high crosslinking ratio and unique flexibility. The present ink composition comprises 10-40% why of 4HBA, and preferably 15-30% or 15-25% 4HBA.
- The present ink composition optionally includes other low-odor mono functional monomers. In one embodiment, mono-functional monomers include acrylates or methacrylates. In another embodiment, mono-functional monomers include a vinyl ether. Examples of suitable mono-functional monomers for the present ink composition include, but are not limited to, cyclic trimethylolpropane formal acrylate (SR531), Genomer 1122 (a urethane acrylate) from RAHN, ethyl vinyl ether, and mono-functional methoxylated PEG (350) acrylate (SR55 alkoxylated phenol acrylate monomer (SR9087), alkoxylated tetrahydrofurfuryl acrylate (SR611), ethoxylated (4) nonyl phenol acrylate (SR504), and ethoxylated (8) nonyl phenol acrylate (Miramer M166 from RAHN).
- Monomers that have odor and are excluded from the present ink composition are shown in Table 1.
-
TABLE 1 Strong Smell Chemical Name CAS # Viscosity cP VCAP Vinyl caprolactam 2235-00-9 PHEA 2-phenoxyethyl acrylate 48145-04-6 12 IDA Isodecyl acrylate 1330-61-6 5 TMCHA Acrylic monomer 86178-38-3, 116- 6 3,3,5-trimethylcyclohexyl acrylate 02-9 IOA isooctyl acrylate 29590-42-9 5 ODA Octyldecyl acrylate 2499-59-4, 2156- 4 96-9 IBOA Isobornyl acrylate 5888-33-5 8 TBCHA Cycloaliphatic acrylate monomer 84100-23-2 9 BZA Benzyl acrylate 2495-35-4 5 EH(EO)2A Di(ethylene glycol) 2-ethylbexyl 117646-83-0 15 acrylate Smell Chemical Name CAS # Viscosity TDA Tridecyl acrylate, 3076-04-8 7 EOEOEA 2(2-ethoxyethoxy) ethyl acrylate 7328-17-8 6 LA Lauryl acrylate 2156-97-0 6 Smell, volatility and irritation Chemical Name CAS # Viscosity THFA Tetrahydrofurfuryl acrylate 2399-48-6 6 - Other than vinyl Caprolactam, the above excluded monomers are monofunctional acrylates. Monofunctional acrylates are important components for the present ink composition because they provide sufficient flexibility of the ink. Monofunctional acrylates have only one acrylate group, and if they exhibit a strong odor, they are most prone to leaving a residual odor in the cured product because they do not crosslink completely into the film and are volatile.
- In addition to mono-functional monomers, the present ink composition comprises 10-55%, preferably 30-55%, of acceptable low odor or no odor di-functional monomers to speed up the polymerization process and increase the chemical resistance. Examples of suitable di-functional monomer include, but are not limited to, diacrylate or dimethacrylate of diols and potyetherdiols, such as propoxylated neopentyl glycol diacrylate, 1, 6-hexanediol diacrylate, dipropylene glycol diacrylate, tripropylene glycol diacrylate, triethylene glycol diacrylate, 1,4-butanediol diacrylate (e.g, SR213), alkoxylated aliphatic diacrylate (e.g. SR9209A), diethylene glycol diacrylate, alkoxylated hexanediols diacrylates (e.g, SR561, SR 562, SR563, SR564 from Sartomer Co., Inc), polyethylene glycol (200) diacrylate (SR259), and polyethylene glycol (400) diacrylate (SR344).
- Preferred diacrylates for the present ink composition includes propoxylated neopentyl glycol diacrylate (CAS No: 84170-74-1), dipropylene glycol diacrylate (CAS No: 57472-68-I). and tripropylene glycol diacrylate (CAS No: 42978-66-5).
- It is preferable to use an oligomer component of low viscosity, low volatility, high reactivity, low glass transition temperature, and good adhesion to multiple substrates in the ink compositions. The functionality of the oligomer component is preferably not greater than 3, and more preferably not greater than 2. The low functionality contributes to more flexible ink compositions.
- The present ink composition comprises at least 5%, preferably at least 10%, and up to 25% (for example, 10-25%) of a flexible urethane acrylate oligomer. Urethane acrylate oligomers suitable for the present ink composition include CN9009, CN990, CN991, from Sartomer, Ebercryl 8402, Ebersryl 8411 from Allnex, Genomer 4215, Genomer 4230 and Geonmer 4267 from RAHN, Miramer PU2100, Miramer PU2200 from MIWON, Photomer 6891, Photomer 6892 and Photomer 6230 from IGM, NeoRad U-61 and NeoRad U-20 from DSM.
- The ink composition of the present invention comprises 1-15% by weight of one or more photoinitiators.
- Acyl phosphine oxide photoinitiators include diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (TPO), phenylbis(2,4,6-trimethylbenzoyl)-phosphine oxide (Irgacure 819), ethyl (2,4,6-trimethylbenzoyl)-phenylphosphine oxide (TPO-L), and their derivatives and polymeric version derivatives.
- In addition to acylphpsphine oxide, the present ink composition may comprise other photoinitiators such as thioxanthones: 2-isopropyl thioxanthone, 2-chlorothioxanthone, 2-methylthioxanthone, 2-ethylthioxanthone, 2-tert-butylthioxanthone, 2-phenylthioxanthone, 2-benzylthioxanthone, 2-benzylthioxanthone, and 4-isopropytthioxanthone, polymeric thioxanthones.
- Other useful photoinitiators that may be used in the present ink composition include, but are not limited to, 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)-butanone-1 (Irgacure 369), 2-methyl-1-[4-(methylthio)phenyl]-2-(4-morpholinyl)-1-propanone (Irgacure 907), 2-(4-methylbenzyl)-2-(dimethylamino)-4-morpholinobutyrophenone (Irgacure 379), 1-hydroxycyclohexylphenyl ketone, 2-hydroxy-4′-(2-hydroxyethoxy)-2-methylpropiophenone, 2-hydroxy-2-methyl-1-phenyl-1-propanone, oligo or dimer (2-hydroxy-2-methyl-1-[4-(1-methylvinyl) phenyl]propanone). Suitable blends of photoinitiators commercially available include, but are not limited to, those under the designations of Darocur 4265, Irgacure 2022, and Irgacure 2100 from BASF; and Esacure KT37, Esacure KT55, and Esacure KTO46 IGM.
- The present ink composition may further include 0.01-5%, preferably 0.1-3% by weight of one or more additive components. Various additives may be included in the ink compositions, including one or more of a surfactant, a leveling additive, a stabilizer, and other suitable additives.
- A surfactant is used to reduce the surface tension of the ink compositions to improve wetting property of the inks on substrates. The amount of surfactant in the ink compositions is 0.01-2% by weight, and preferably 005-1% by weight. It is preferred that the surfactant comprises at least one polysiloxane acrylate, also known as a silicone acrylate, which participates in the radiation curing process to be part of cured ink. Examples of a suitable surfactant include, but are not limited to, those under the designations of TEGORAD 2200N, TEGORAD 2100, and TEGORAD 2300 from Evonik Resource Efficiency GmbH, TEGO Products and BYK 307, BYK 330, BYK 377 and BYK 3510 (BYK CHEMIE GMBH (Wesel, FRG).
- A leveling additive may be used to improve the flowing property of ink to produce a more uniform surface of ink film. The amount of leveling agent in the ink compositions is 0.1-2% by weight. Examples of suitable leveling agent include, but are not limited to, those under the designation of BYK 361N, BYK 353, and BYK 354 and so on, (BYK CHEMIE GMBH).
- A stabilizer is used to improve the shelf life and photolytic stability of ink compositions. Stabilizers in the ink compositions can include an ultraviolet light stabilizer and hindered amine light stabilizer. These stabilizers are used to improve the outdoor durability and weatherability of cured ink. Commercially available ultraviolet light stabilizers include, but are not limited to, those under the designation of TINUVIN® 460, TINUVIN® 479, TINUVIN® 171, TINUVIN® 928, TINUVIN® 123, TINUVIN® 1130, TINUVIN® 400 TINUVIN® 152 and TINUVIN® 292 from BASF AG, Ludwigshafen, FRG. One or more UV inhibitor/stabilizers may be present in the ink compositions. They can be present in the ink compositions in amounts of 0.01%-2% by weight, and more specifically 0.1%-1% by weight.
- A free radical scavenger stabilizer is used to improve the stability of ink against heat. Examples of a free radical scavenger include, but are not limited to, hydroquinone, 4-methoxyphenol, hindered phenol, etc. The amount of free radial scavenger stabilizer can be present in ink compositions in 0.05-2% by weight, and more specifically 0.1-0.75% by weight. A small amount is preferably used in the ink compositions to minimize their interference with the radiation curing process. Examples of free radical scavengers include, but are not limited to, hydroquinone, 4-methoxyphenol, hindered phenol such as IRGASTAB® UV 22 (an in-can stabilizer that inhibits early polymerization in UV curable ink and coating formulations) from BASF, and IN515 (tris(N-nitroso-N-phenyl-hydroxylamine)-aluminum salt+92% 2-phenoxyethyl acrylate) from IGM.
- The present ink composition may further comprise a colorant component if color is desired. The colorant can be pigments, dyes, or a combination of pigments and/or dyes. The amount of colorant component in the ink compositions is in the range of 0-20% by, more preferably 0-8% by weight. A clear ink has 0% colorant.
- Examples of suitable Pigments include, but are not limited to, those under the designation of Pigment Blue 1, Pigment Blue 15, Pigment Blue 15:1, Pigment Blue 15:2, Pigment Blue 15:3, Pigment Blue 15:4, Pigment Blue 15:6, Pigment Blue 16, Pigment Blue 24, and Pigment Blue 60; Pigment Brown 5, Pigment Brown 23, and Pigment Brown 25; Pigment Yellow 3, Pigment Yellow 14, Pigment Yellow 16, Pigment Yellow 17, Pigment Yellow 24, Pigment Yellow 65, Pigment Yellow 73, Pigment Yellow 74, Pigment Yellow 83, Pigment Yellow 95, Pigment Yellow 97, Pigment Yellow 108, Pigment Yellow 109, Pigment Yellow 110, Pigment Yellow 113, Pigment Yellow 120, Pigment Yellow 128, Pigment Yellow 129, Pigment Yellow 138, Pigment Yellow 139, Pigment Yellow 150, Pigment Yellow 154, Pigment Yellow 156, and Pigment Yellow 175; Pigment Green 1, Pigment Green 7, Pigment Green 10, and Pigment Green 36; Pigment Orange 5, Pigment Orange 15, Pigment Orange 16, Pigment Orange 31, Pigment Orange 34, Pigment Orange 36, Pigment Orange 43, Pigment Orange 48, Pigment Orange 51, Pigment Orange 60, and Pigment Orange 61; Pigment Red 4, Pigment Red 5, Pigment Red 7, Pigment Red 9, Pigment Red 22, Pigment Red 23, Pigment Red 48, Pigment Red 48:2, Pigment Red 49, Pigment Red 112, Pigment Red 122, Pigment Red 123, Pigment Red 149, Pigment Red 166, Pigment Red 168, Pigment Red 170, Pigment Red 177, Pigment Red 179, Pigment Red 190, Pigment Red 202, Pigment. Red 206, Pigment Red 207, and Pigment Red 224; Pigment Violet 19, Pigment Violet 23, Pigment Violet 37, Pigment Violet 32, Pigment Violet 42; and Pigment Black 6 or 7 (The Colour Index, Vols. 1-8, by the Society of Dyers and Colourists, Yorkshire, England), Black PB 2 and 5; carbon black; titanium dioxide (including rutile and anatase); zinc sulfide, and the like or a mixture thereof.
- If pigment is used in the ink compositions, preferably, the pigment is pre-dispersed prior to incorporation, generally into one or more of the monomer and/or oligomer components used in the ink compositions. In embodiments, the colorant is added as a pigment slurry prepared with a portion of a reactive diluent such as propoxylated 2-neopentyl glycol diacrylate (SR-9003, Sartomer USA, LLC). Dispersion agents generally are used to improve the stability of dispersion by reducing or avoiding the possibility of pigment particle settling or agglomerating. Examples of suitable dispersion agents include, but are not limited to, those under the designations of Solsperse 32000 from Lubrizol® Advanced Materials, and DisperBYK 111 and DisperBYK180 from Byk Chemi®. The pigment in the dispersion can be 20-80% by weight. Other additives such as stabilizers, flowing additive, etc. can be incorporated during the dispersion process to improve the stability of dispersion.
- The invention is further illustrated by the following examples.
- Table 1 shows the components for a low odor ink composition.
-
TABLE 1 Ink Composition Function Chemical Name weight % Difunctional monomer Dipropylene glycol diacrylate 41.5 DPGDA Difunctional monomer Propoxylated (2) neopentyl 8 glycol diacrylate NPG(PO)2DA Monofunctional 4-Hydrobutylacrylate 25 monomer Oligomer Aliphatic urethane diacrylate 10 Photoinitiator TPO 5 Photoinitiator TPO-L 5 Photoinitiator IRGACURE ® 819 2 Additive Polyacrylate Leveling agent 0.5 Additive Silicone-containing 0.5 surface additive Pigment Cyan pigment 2 Stabilizer STABILIZER UV22 0.5 100 - The above ingredients (chemicals) were added to a container, and mixed by magnetic or mechanic mixers to form the cyan ink. Then the ink was filtered through 1 micron filter.
- It is to be understood that the foregoing describes preferred embodiments of the present invention and that modifications may be made therein without departing from the scope of the present invention as set forth in the claims.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/678,499 US20200071551A1 (en) | 2016-05-25 | 2019-11-08 | Low odor radiation curable ink compositions |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201662341303P | 2016-05-25 | 2016-05-25 | |
US15/472,630 US10487226B2 (en) | 2016-05-25 | 2017-03-29 | Low odor radiation curable ink compositions |
US16/678,499 US20200071551A1 (en) | 2016-05-25 | 2019-11-08 | Low odor radiation curable ink compositions |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/472,630 Continuation US10487226B2 (en) | 2016-05-25 | 2017-03-29 | Low odor radiation curable ink compositions |
Publications (1)
Publication Number | Publication Date |
---|---|
US20200071551A1 true US20200071551A1 (en) | 2020-03-05 |
Family
ID=60412957
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/472,630 Active US10487226B2 (en) | 2016-05-25 | 2017-03-29 | Low odor radiation curable ink compositions |
US16/678,499 Abandoned US20200071551A1 (en) | 2016-05-25 | 2019-11-08 | Low odor radiation curable ink compositions |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/472,630 Active US10487226B2 (en) | 2016-05-25 | 2017-03-29 | Low odor radiation curable ink compositions |
Country Status (3)
Country | Link |
---|---|
US (2) | US10487226B2 (en) |
EP (1) | EP3464491A4 (en) |
WO (1) | WO2017205609A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10457825B2 (en) * | 2015-08-17 | 2019-10-29 | Electronics For Imaging, Inc. | UV curable inkjet ink compositions |
US11845874B2 (en) | 2019-01-24 | 2023-12-19 | Agfa Nv | Radiation curable inkjet inks for interior decoration |
CN116804125A (en) * | 2023-06-15 | 2023-09-26 | 高宝新材料(珠海)有限公司 | UV jet printing ink for brake pads and preparation method and application thereof |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6071334A (en) * | 1998-11-19 | 2000-06-06 | Wider; Michael | Printing ink with heat stabilizing and leveling additive |
US20080204538A1 (en) * | 2006-06-28 | 2008-08-28 | Xerox Corporation | Printing on corrugated substrates |
US20140220312A1 (en) * | 2013-02-06 | 2014-08-07 | Xerox Corporation | Solventless stretchable ink composition |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040115561A1 (en) | 2002-12-13 | 2004-06-17 | Mikhail Laksin | Energy curable, water washable printing inks suitable for waterless lithographic printing |
US7737349B1 (en) | 2006-08-14 | 2010-06-15 | Art Guitar, Llc | Decorating guitars |
TW200615342A (en) | 2004-07-16 | 2006-05-16 | Hexion Specialty Chemicals Inc | Radiation curable inkjet inks, method of manufacture, and methods of use thereof |
GB0507904D0 (en) | 2005-04-19 | 2005-05-25 | Sun Chemical Bv | A method and apparatus for ink jet printing |
JP5194462B2 (en) | 2007-01-31 | 2013-05-08 | Jnc株式会社 | Inkjet ink |
US7837318B2 (en) | 2007-03-16 | 2010-11-23 | Hewlett-Packard Development Company, L.P. | Photo-curable ink-jet ink compositions, systems, and methods |
JP4816976B2 (en) | 2007-08-09 | 2011-11-16 | セイコーエプソン株式会社 | Photocurable ink composition |
WO2011021052A2 (en) | 2009-08-21 | 2011-02-24 | Sericol Limited | Printing ink, apparatus and method |
JP5685849B2 (en) | 2010-07-29 | 2015-03-18 | セイコーエプソン株式会社 | Ultraviolet curable inkjet ink composition and inkjet recording method |
EP3255110B1 (en) * | 2011-07-08 | 2022-08-17 | Seiko Epson Corporation | Photocurable ink composition for ink jet recording and ink jet recording method |
JP6047904B2 (en) | 2012-03-28 | 2016-12-21 | セイコーエプソン株式会社 | Ink jet recording method, photocurable ink jet ink composition, ink jet recording apparatus |
JP6231747B2 (en) | 2013-01-18 | 2017-11-15 | 株式会社ミマキエンジニアリング | Ultraviolet curable ink composition for ink jet printing and printing method |
JP2016007737A (en) | 2014-06-23 | 2016-01-18 | 株式会社ミマキエンジニアリング | Image formation method |
CN104830148A (en) * | 2015-06-03 | 2015-08-12 | 林振坤 | Environment-friendly UV curing silk screen ink and production method thereof |
-
2017
- 2017-03-29 US US15/472,630 patent/US10487226B2/en active Active
- 2017-05-25 WO PCT/US2017/034449 patent/WO2017205609A1/en unknown
- 2017-05-25 EP EP17803572.1A patent/EP3464491A4/en active Pending
-
2019
- 2019-11-08 US US16/678,499 patent/US20200071551A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6071334A (en) * | 1998-11-19 | 2000-06-06 | Wider; Michael | Printing ink with heat stabilizing and leveling additive |
US20080204538A1 (en) * | 2006-06-28 | 2008-08-28 | Xerox Corporation | Printing on corrugated substrates |
US20140220312A1 (en) * | 2013-02-06 | 2014-08-07 | Xerox Corporation | Solventless stretchable ink composition |
Also Published As
Publication number | Publication date |
---|---|
WO2017205609A1 (en) | 2017-11-30 |
US20170342281A1 (en) | 2017-11-30 |
EP3464491A4 (en) | 2020-04-15 |
EP3464491A1 (en) | 2019-04-10 |
US10487226B2 (en) | 2019-11-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8889232B2 (en) | Radiation curable ink compositions | |
US11021620B2 (en) | Digital printing inks | |
US6846851B2 (en) | Water-based inkjet inks containing an ultraviolet curable humectant | |
EP1358283B2 (en) | A printing ink | |
US20200071551A1 (en) | Low odor radiation curable ink compositions | |
US20170283631A1 (en) | Fast curing uv inkjet inks based on hyper-branched polyester acrylates | |
EP3735444B1 (en) | Energy curable compositions comprising polyols | |
CN104508025A (en) | Gloss-controllable, radiation-curable inkjet ink | |
US20200399486A1 (en) | Single pass printing of white on corrugated board | |
EP3152267B1 (en) | Energy curable printing inks and coating compositions containing methl phenyl glycoxylate | |
TW201728618A (en) | Polymeric aminoacrylates | |
JP7109878B2 (en) | Energy beam-curable inkjet ink composition | |
TW201802196A (en) | Energy curable compositions comprising polymeric aminoacrylates | |
US11111403B2 (en) | Aqueous electron beam curable compositions comprising poly(alkoxylaes) | |
EP3337862A1 (en) | Uv curable inkjet ink compositions | |
JP2012241116A (en) | Active energy ray-curable composition, method for forming coating film, and coating film | |
EP4004131B1 (en) | Uv inkjet compositions | |
DE102014018684A1 (en) | UV curable inkjet inks for single pass printing applications | |
GB2574719A (en) | A printing ink | |
DE102018220515A1 (en) | UV curable white ink composition | |
JP7446871B2 (en) | UV-curable inkjet clear ink composition | |
EP4056658A1 (en) | Radiation-curable compound | |
WO2024020037A1 (en) | Viscosity modifiers for energy curable inks | |
DE102018205210A1 (en) | UV-curable composition for coating or printing a substrate and / or a substrate surface |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ELECTRONICS FOR IMAGING, INC., CALIFORNIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SAMUEL, JOSHUA;ZHANG, HUILEI;SIGNING DATES FROM 20170327 TO 20170328;REEL/FRAME:051039/0633 |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: FINAL REJECTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: RESPONSE AFTER FINAL ACTION FORWARDED TO EXAMINER |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: NON FINAL ACTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: FINAL REJECTION MAILED |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |