CN109206980A - A kind of UV ink-jet white ink - Google Patents
A kind of UV ink-jet white ink Download PDFInfo
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- CN109206980A CN109206980A CN201811286848.XA CN201811286848A CN109206980A CN 109206980 A CN109206980 A CN 109206980A CN 201811286848 A CN201811286848 A CN 201811286848A CN 109206980 A CN109206980 A CN 109206980A
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- acrylate
- photoinitiator
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- white
- inkjet ink
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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
- C09D11/32—Inkjet printing inks characterised by colouring agents
- C09D11/322—Pigment 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
- 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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- 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)
Abstract
The present invention provides a kind of UV white inkjet inks, in terms of mass parts, including following components: 30~70 parts of monomer, 5~15 parts of photoinitiator, 1~10 part of resin, 20~50 parts of white colorant；Contain one of cyclic structure, hydroxyl, ethyoxyl, propoxyl group, amido and amino or a variety of in the structure of the monomer；The photoinitiator is one of acylphosphine oxide photoinitiator, alpha-alcohol ketone photoinitiator, α-aminoketone photoinitiator and thioxanthone photoinitiator or a variety of；The white colorant includes pigment, and the pigment is titanium dioxide.UV white inkjet stability of ink provided by the invention is good, after aging 7 days, still has preferable stability；UV white inkjet ink provided by the invention has preferable solidification adhesion property；And UV white inkjet ink provided by the invention has preferable whiteness and screening rate, and is not in the problem for blocking spray head and the ink that breaks.
Description
Technical field
The present invention relates to inks field more particularly to a kind of UV white inkjet inks.
Background technique
UV white inkjet ink has good screening capacity, can cover up the defect on substrate, and improve color jet-ink
Contrast and vividness of the ink in surface printing mode or back up mode.In surface printing mode, by cromogram
As being attached on the coating of white inkjet ink, come out color image in white background saliency；Overleaf in printing mode,
Over the transparent substrate by color image printing, then white inkjet ink is attached on the color image, then passes through transparent base
Material observes final image.But starting monomer, oligomer, resin or auxiliary agent etc. in UV white inkjet ink, often with slight
Color, so that contrast is lower and chalk is partially yellow.
In order to solve the above-mentioned technical problem, white inkjet ink preferably uses the pigment of high refractive index, to reach high masking
The purpose of rate.The white pigment of current common high refractive index includes zinc oxide, barium sulfate, calcium carbonate, titanium dioxide etc..But this
A little more traditional organic pigment specific gravity of inorganic pigment granules are higher by several times, are easy that sedimentation occurs in low viscosity ink-jet ink and gather
Collection, influences the dispersion stabilization of ink, leads to the blocking of ink jet printing spray head, tiltedly spray, disconnected ink.In addition, high refractive index
Pigment makes ultraviolet light that can not be penetrated into coating bottom, causes the solidification of coating bottom not exclusively, influences the adhesion property of coating.Cause
This, contrast, dispersion stabilization and the adhesion etc. for improving white inkjet ink are the task of top priority.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides a kind of UV white inkjet ink, UV provided by the invention is white
Color ink-jet ink has preferable dispersion stabilization and adhesion, and UV white inkjet ink provided by the invention has height
It is not in the problem for blocking spray head and the ink that breaks while whiteness and high screening rate.
The present invention provides a kind of UV white inkjet inks, in terms of mass parts, including following components:
In the structure of the monomer containing one of cyclic structure, hydroxyl, ethyoxyl, propoxyl group, amido and amino or
It is a variety of；
The photoinitiator is acylphosphine oxide photoinitiator, alpha-alcohol ketone photoinitiator, alpha-amido ketone light draw
Send out one of agent and thioxanthone photoinitiator or a variety of；
The white colorant includes pigment, and the pigment is titanium dioxide.
Preferably, the white colorant further includes mill base monomer, dispersing agent and mill base auxiliary agent, the mill base monomer, dispersion
The mass ratio of agent, mill base auxiliary agent and pigment is 30~60:5~30:0~10:30~70.
Preferably, the white colorant preparation method the following steps are included:
(1) dispersing agent is dissolved using mill base monomer, obtains pre- solution；
(2) pigment, mill base auxiliary agent and the step (1) are obtained pre- solution to be stirred, obtains pre-dispersed liquid；
(3) it is filtered after being ground the pre-dispersed liquid that the step (2) obtains, obtains white slurry.
Preferably, the monomer includes tetrahydrofurfuryl acrylate, ring trimethylolpropane formal acrylate, three hydroxyls
Methylcyclohexyl acrylate, thanatol acrylate, benzyl acrylate, 0-phenyl phenoxyethyl acrylate, 4-
Tert-butylcyclohexyl acrylate, isobornyl acrylate, glycidyl methacrylate, dicyclopentenyl acrylate,
Dicyclopentenyl (ethyoxyl) acrylate, ethoxyethoxyethyl acrylate, n (ethyoxyl) phenol acrylate, n
(ethyoxyl) nonyl phenol acrylate, n (propoxyl group) nonyl phenol acrylate, N, N- dimethacrylamide, N- propylene
Morpholide, N- vinylpyrrolidone, cyclohexane dicarboxylic acid acid imide ethyl propylene acid esters, dimethylaminoethyl acrylate methyl ammonia ethyl ester, third
Olefin(e) acid diformazan ammonia ethyl ester, methacrylic acid diethylamino ethyl ester, 1,6 hexanediol diacrylate, n (ethoxylation) 1,6- oneself two
Alcohol diacrylate, 1,4 butanediol diacrylate, n (propoxylation) neopentylglycol diacrylate, tripropylene glycol
Diacrylate, dipropylene glycol diacrylate, triethylene-glycol diacrylate, n (ethyoxyl) bisphenol A dimethacrylate
Ester, polyethylene glycol (n) diacrylate, three (2- ethoxy) isocyanuric acid diacrylates, n (ethyoxyl) trimethylolpropane
Triacrylate, n (propoxyl group) glycerol triacrylate, Tricyclodecane Dimethanol diacrylate, three propylene of pentaerythrite
Acid esters, n (propoxyl group) trimethylolpropane trimethacrylate, three (2- ethoxy) isocyanuric acid triacrylates, ethoxylation
Pentaerythritol tetraacrylate, double pentaerythritol methacrylate, two (trimethylolpropane) tetraacrylates, pentaerythrite four
One of acrylate and double pentaerythritol C5 methacrylate are a variety of.
Preferably, the acylphosphine oxide photoinitiator include bis- (2,4,6- trimethylbenzoyl) phenyl phosphine oxides or
2,4,6- trimethylbenzoyl diphenyl phosphine oxide；
The alpha-alcohol ketone photoinitiator includes hydroxycyclohexyl phenylketone, 2- hydroxy-2-methyl -1- phenyl -1- third
One of ketone and 1,1'- (two -4,1- phenylene of methylene) bis- [2- hydroxy-2-methyl -1- acetone] are a variety of；
The α-aminoketone photoinitiator includes 2- benzyl -2- dimethylamino -1- (4- morpholinyl phenyl) butanone, 2-
(4- first base Benzyl yl)-2- (dimethylamino)-1- (4- morpholinyl phenyl)-1- butanone and 2- methyl-1-(4- methyl mercapto phenyl)-2-
One of morpholinyl -1- acetone is a variety of；
The thioxanthone photoinitiator includes 2,4- diethyl thiazolone or 2- isopropyl thioxanthone.
Preferably, the weight average molecular weight of the resin is 8000~300000.
Preferably, the resin include polyester resin, polyurethane resin, epoxy resin, vinyl chloride-vinyl acetate resin, Malin's acid resin,
The copolymer of one of rosin resin and polyvinyl butyral resin or a variety of or above-mentioned resin.
Preferably, the UV white inkjet ink further includes the component of following mass fraction:
Oligomer (0,10] part；
Auxiliary agent (0,10] part.
Preferably, the oligomer includes polyester acrylate, polyether acrylate, urethane acrylate, epoxy third
One of olefin(e) acid ester, polyamide acrylate, polyamine group acrylate are a variety of.
Preferably, the weight average molecular weight of the oligomer is 1500~50000.
The present invention provides a kind of UV white inkjet inks, in terms of mass parts, including following components: 30~70 parts of monomer,
5~15 parts of photoinitiator, 1~10 part of resin, 20~50 parts of white colorant；Contain cyclic structure, hydroxyl in the structure of the monomer
One of base, ethyoxyl, propoxyl group, amido and amino are a variety of；The photoinitiator be acylphosphine oxide photoinitiator,
One of alpha-alcohol ketone photoinitiator, α-aminoketone photoinitiator and thioxanthone photoinitiator are a variety of；It is described
White colorant includes pigment, and the pigment is titanium dioxide.
White colorant content is higher in UV white inkjet ink provided by the invention, can effectively promote the comparison of ink
Degree and screening rate, and the present invention use containing with cyclic structure, hydroxyl, ethyoxyl, propoxyl group, amido and amino list
Body, monomer have the affine base of extremely strong molecule, are conducive to fully dispersed between resin, mill base and monomer, raising UV white spray
The stability of ink；In addition, the present invention preferably controls the weight average molecular weight of resin 8000~300000, by oligomer weight
Average molecular weight is controlled 1500~50000, improves the affine base content of molecule in ink, is further conducive to point for improving ink
Dissipate stability and substrate adhesion.Under the action of ultraviolet lighting and photoinitiator, by above-mentioned monomer, resin and white colorant group
At UV white inkjet ink can preferably be attached to substrate surface, improve the adhesive force of UV white inkjet ink.Embodiment
The result shows that UV white inkjet stability of ink provided by the invention is preferable, after aging 7 days, still there is preferable stability；
UV white inkjet ink provided by the invention has preferable solidification adhesion property；And UV white inkjet ink provided by the invention
Water has preferable whiteness and screening rate, and is not in the problem for blocking spray head and the ink that breaks.
Specific embodiment
The present invention provides a kind of UV white inkjet inks, in terms of mass parts, including following components:
In the structure of the monomer containing one of cyclic structure, hydroxyl, ethyoxyl, propoxyl group, amido and amino or
It is a variety of；
The photoinitiator is acylphosphine oxide photoinitiator, alpha-alcohol ketone photoinitiator, alpha-amido ketone light draw
Send out one of agent and thioxanthone photoinitiator or a variety of；
The white colorant includes pigment, and the pigment is titanium dioxide；The partial size of the white colorant is preferably 150~
250nm。
UV white inkjet ink provided by the invention include 30~70 mass parts monomers, preferably 35~65 parts, further
Preferably 40~60 parts, more preferably 45~55 parts.
In the present invention, cyclic structure, hydroxyl, ethyoxyl, propoxyl group, amido and amino are contained in the structure of the monomer
One of or it is a variety of；The cyclic structure preferably includes in 3~6 carbocyclic rings, oxa- ring, azacyclo-, phosphorus heterocycle and thia ring
It is one or more, it further preferably include cyclopropyl, cyclobutyl, cyclopenta, cyclohexyl, phenyl ring, epoxy group, furyl, thiophene
In base, pyrrole radicals, thiazolyl, imidazole radicals, pyridyl group, pyrazinyl, pyrimidine radicals, indyl, quinolyl, pteridyl and acridinyl
It is one or more.
In the present invention, the monomer preferably includes tetrahydrofurfuryl acrylate, ring trimethylolpropane formal propylene
Acid esters, trihydroxy methyl cyclohexylacrylic ester, thanatol acrylate, benzyl acrylate, adjacent phenyl benzene oxygen ethyl third
Olefin(e) acid ester, 4- tert-butylcyclohexyl acrylate, isobornyl acrylate, glycidyl methacrylate, dicyclopentenyl
Acrylate, dicyclopentenyl (ethyoxyl) acrylate, ethoxyethoxyethyl acrylate, n (ethyoxyl) phenol third
Olefin(e) acid ester, n (ethyoxyl) nonyl phenol acrylate, n (propoxyl group) nonyl phenol acrylate, N, N- dimethyl allene acyl
Amine, N- acryloyl morpholine, N- vinylpyrrolidone, cyclohexane dicarboxylic acid acid imide ethyl propylene acid esters, dimethylaminoethyl acrylate methyl
Ammonia ethyl ester, acrylic acid diformazan ammonia ethyl ester, methacrylic acid diethylamino ethyl ester, 1,6 hexanediol diacrylate, n (ethoxylation)
1,6 hexanediol diacrylate, 1,4 butanediol diacrylate, n (propoxylation) neopentylglycol diacrylate, two contractings
Tripropylene glycol diacrylate, dipropylene glycol diacrylate, triethylene-glycol diacrylate, n (ethyoxyl) bisphenol-A two
Acrylate, polyethylene glycol (n) diacrylate, three (2- ethoxy) isocyanuric acid diacrylates, three hydroxyl first of n (ethyoxyl)
Base propane triacrylate, n (propoxyl group) glycerol triacrylate, Tricyclodecane Dimethanol diacrylate, pentaerythrite
Triacrylate, n (propoxyl group) trimethylolpropane trimethacrylate, three (2- ethoxy) isocyanuric acid triacrylates, second
Oxygroup pentaerythritol tetraacrylate, double pentaerythritol methacrylate, two (trimethylolpropane) tetraacrylates, season penta
One of tetra-acrylate and double pentaerythritol C5 methacrylate are a variety of.
On the basis of the mass fraction of monomer, UV white inkjet ink provided by the invention includes that 5~15 mass parts light draw
Send out agent, preferably 8~13 parts, further preferably 10~12 parts.In the present invention, the photoinitiator is acylphosphine oxide class
Photoinitiator, alpha-alcohol ketone photoinitiator, α-aminoketone photoinitiator or thioxanthone photoinitiator；The acyl group oxygen
Change phosphine photoinitiator and preferably includes bis- (2,4,6- trimethylbenzoyl) phenyl phosphine oxides or 2,4,6- trimethylbenzoyl two
Phenyl phosphine oxide；The alpha-alcohol ketone photoinitiator preferably includes hydroxycyclohexyl phenylketone, 2- hydroxy-2-methyl -1- benzene
One of base -1- acetone and 1,1'- (two -4,1- phenylene of methylene) bis- [2- hydroxy-2-methyl -1- acetone] are a variety of；
The α-aminoketone photoinitiator preferably includes 2- benzyl -2- dimethylamino -1- (4- morpholinyl phenyl) butanone, 2- (4- first
Base Benzyl yl)-2- (dimethylamino)-1- (4- morpholinyl phenyl)-1- butanone and 2- methyl-1-(4- methyl mercapto phenyl)-2- morpholine
One of base -1- acetone is a variety of；The thioxanthone photoinitiator preferably includes 2,4- diethyl thiazolone or 2- is different
Propyl thioxanthone.
On the basis of the mass fraction of monomer, UV white inkjet ink provided by the invention includes 1~10 mass parts resin,
Preferably 2~8 parts, further preferably 4~6 parts.In the present invention, the resin preferably includes polyester resin, polyurethane tree
One of rouge, epoxy resin, vinyl chloride-vinyl acetate resin, Malin's acid resin, rosin resin and polyvinyl butyral resin or it is a variety of or
The copolymer of the above-mentioned resin of person.
On the basis of the mass fraction of monomer, UV white inkjet ink provided by the invention includes 20~50 mass parts white
Mill base, preferably 25~45 parts, further preferably 30~40 parts.
In the present invention, the white colorant includes pigment, and the pigment is titanium dioxide；The pigment is preferably the U.S.
Du Pont's titanium dioxide pigment, U.S. gift union II titanium oxide pigments, stone original titanium dioxide pigment or special promise titanium dioxide pigment；The beauty
Du Pont of state titanium dioxide pigment preferably include R-706, R-900, R-902+, R-960, R-931, R102, R-103, R104,
R105, R108 or R350；The U.S. gift union II titanium oxide pigments preferably include TIONA595 or R-CL69；The stone original titanium dioxide
Titanium pigment preferably includes CR-90-2, CR-60-2 or CR-57；Spy's promise titanium dioxide pigment preferably includes CR-828 or CR-
826。
In the present invention, the partial size of the white colorant is preferably 150~250nm, further preferably 160~240nm,
More preferably 180~220nm.
In the present invention, it is also preferable to include mill base monomer, dispersing agent and mill base auxiliary agents for the white colorant.In the present invention
In, the mill base monomer preferably includes tetrahydrofurfuryl acrylate, ring trimethylolpropane formal acrylate, trihydroxy methyl
Cyclohexylacrylic ester, benzyl acrylate, thanatol acrylate, 1,4 butanediol diacrylate, 1,6- oneself two
Alcohol diacrylate, tri (propylene glycol) diacrylate, dipropylene glycol diacrylate, triethylene-glycol diacrylate
Ester, n (propoxylation) neopentylglycol diacrylate, n (ethyoxyl) bisphenol a diacrylate and n (ethyoxyl) trihydroxy methyl
One of propane triacrylate is a variety of.In the present invention, the mass ratio of the mill base monomer and pigment be preferably 30~
60:30~70, further preferably 35~55:35~65, more preferably 40~50:40~60, most preferably 40~50:45~
60。
In the present invention, the mass ratio of the dispersing agent and pigment is preferably 5~30:30~70, and further preferably 10
~25:35~65, more preferably 15~20:40~60, most preferably 15~20:45~55；The dispersing agent is preferably BYK
The Solsperse 24000/28000/32000/ of BYK-168/9150/9151/9152/2100, Lu Borun of Disper
32500/35000/36000/39000, the Dispers 710/ of the EFKA4310/4330/4030/4701 or Degussa of Efka
685/655。
In the present invention, the mass ratio of the mill base auxiliary agent and pigment is preferably 0~10:30~70, further preferably
0.1~10:35~65, more preferably 0.2~8:40~60, most preferably 0.2~6:45~55, the mill base auxiliary agent preferably wrap
Include stabilizer.
In the present invention, the preparation method of the white colorant preferably includes following steps:
(1) dispersing agent is dissolved using mill base monomer, obtains pre- solution；
(2) pigment, mill base auxiliary agent and the step (1) are obtained pre- solution to be stirred, obtains pre-dispersed liquid；
(3) it is filtered after being ground the pre-dispersed liquid that the step (2) obtains, obtains white slurry.
The present invention is dissolved dispersing agent using mill base monomer, obtains pre- solution.
The specific embodiment of mill base monomer dissolution dispersing agent is not particularly limited in the present invention, using those skilled in the art
Mode known to member.
After obtaining pre- solution, pigment, mill base auxiliary agent and pre- solution are stirred by the present invention, obtain pre-dispersed liquid.
In the present invention, the revolving speed being stirred is preferably 500~1500rpm, further preferably 800~
1300rpm, more preferably 1000~1200rpm.
The specific embodiment being stirred is not particularly limited in the present invention, and use is well-known to those skilled in the art
Mode.
After obtaining pre-dispersed liquid, the present invention filters after grinding pre-dispersed liquid, obtains white slurry.
The specific embodiment of grinding is not particularly limited in the present invention, is using well-known to those skilled in the art
It can.
In the present invention, the filtering is preferably 0.7 μm of glass and 0.5 μm of PP with filter membrane.In the present invention, described white
The partial size of mill base material is 150~250nm, preferably 180~230nm, further preferably 200~220nm.
It is also preferable to include oligomer for UV white inkjet ink provided by the invention.On the basis of the mass fraction of monomer, institute
State oligomer mass fraction be preferably (0,10] part, further preferably 1~10 part, more preferably 2~8 parts, most preferably 4
~6 parts.In the present invention, the oligomer preferably includes polyester acrylate, urethane acrylate and epoxy acrylate
One of or it is a variety of.In the present invention, the weight average molecular weight of the oligomer is preferably 1500~50000, further preferably
It is 2000~45000, more preferably 3000~40000.
On the basis of the mass fraction of monomer, UV white inkjet ink provided by the invention it is also preferable to include (0,10] quality
Part auxiliary agent, further preferably 2~8 parts, more preferably 4~6 parts.In the present invention, the auxiliary agent preferably includes wetting agent, stream
One of flat agent, stabilizer and adhesion promoter are a variety of, and the wetting agent preferably includes 3000 series of EKFA, BYK
371/377/378 or Evonik GlideB1484/432；The levelling agent preferably includes BYK 337/3500/3505/361；Institute
State the GENORAD that stabilizer preferably includes 2,6 di tert butyl 4 methyl phenol (BHT), 4- metoxyphenol (MEHQ), RAHN
16/18/20/22/23 or cyanogen spy S100/110/210/130；The adhesion promoter preferably includes silicon systems coupling agent, titanium system
Coupling agent or phosphorus system coupling agent.
White colorant content is higher in UV white inkjet ink provided by the invention, can effectively promote the comparison of ink
Degree and screening rate, and the present invention uses the monomer containing cyclic structure, hydroxyl, ethyoxyl, propoxyl group, amido and amino, it is single
Body has the affine base of extremely strong molecule, is conducive to fully dispersed between resin, mill base and monomer, raising UV white inkjet ink
Stability；In addition, the present invention preferably controls the weight average molecular weight of resin 8000~300000, by oligomer Weight-average molecular
Amount control improves the affine base of molecule in ink 1500~50000, is further conducive to the dispersion stabilization for improving ink.
Under the action of ultraviolet lighting and photoinitiator, the UV white inkjet ink energy that is made of above-mentioned monomer, resin and white colorant
It is enough to be preferably attached to substrate surface, improve the adhesive force of UV white inkjet ink.
The present invention does not have particular/special requirement to the preparation method of the UV white inkjet ink, using those skilled in the art institute
The preparation method of well known composition directly mixes each component.
Below in conjunction with the embodiment in the present invention, the technical solution in the present invention is clearly and completely described.
Embodiment 1
UV white inkjet ink is in terms of mass parts, composition are as follows: 40 parts of tetrahydrofurfuryl acrylate, N, N- dimethyl allene acyl
10 parts of amine, three 4.0 parts of (ethyoxyl) trimethylolpropane trimethacrylates, 3.0 parts of propylene oxide acid oligomer, wherein epoxy third
3.0 parts of molecular weight > 1500, the vinyl chloride-vinyl acetate resin of olefin(e) acid oligomer, wherein the molecular weight > 8000,2 of vinyl chloride-vinyl acetate resin, 4,6- front threes
7.0 parts of base benzoyl diphenyl phosphine oxide, 1.0 parts of 2- benzyl -2- dimethylamino -1- (4- morpholinyl phenyl) butanone, 2,4- bis-
1.0 parts of ethyl thiazole ketone, 0.2 part of BYK-3500 wetting agent, 0.7 part of BHT stabilizer, 30 parts of mill base, wherein mill base includes mill base
11.4 parts of monomer 1,6 hexanediol diacrylate, YK-91513 parts of dispersant B, 0.6 part of mill base auxiliary agent B HT and titanium dioxide
15 parts of pigment, wherein the partial size of mill base is 222nm, the quality of mill base monomer, dispersing agent, mill base auxiliary agent and titanium dioxide in mill base
Than for 38:10:2:50.
Embodiment 2
UV white inkjet ink is in terms of mass parts, composition are as follows: 53.6 parts of benzyl acrylate, n (propoxyl group) glycerine three
4.0 parts of acrylate, 3.0 parts of polyester acid oligomer, wherein molecular weight > 1500, the polyurethane of polyester acid oligomer
3.0 parts of resin, wherein 8000,2,4,6- 7.0 parts of the trimethylbenzoyl diphenyl phosphine oxide of molecular weight > of polyurethane resin, 2,
1.0 parts of 4- diethyl thiazolone, 1.0 parts of 2- hydroxy-2-methyl -1- phenyl -1- acetone, 0.2 part of BYK-3500 wetting agent, BHT
0.7 part of stabilizer, 25 parts of mill base, wherein mill base includes mill base monomer 1,4.5 parts of 6- hexanediyl ester, dispersant B YK-
1687.5 parts, 0.5 part of mill base auxiliary agent B HT and 12.5 parts of titanium dioxide pigment, wherein the partial size of mill base is 216nm, color in mill base
The mass ratio for starching monomer, dispersing agent, mill base auxiliary agent and titanium dioxide is 33:15:2:50.
Embodiment 3
UV white inkjet ink is in terms of mass parts, composition are as follows: 57.1 parts of tetrahydrofurfuryl acrylate, three (ethyoxyl) three hydroxyls
4.0 parts of propane tri, 9.0 parts of polyurethane resin, wherein the molecular weight > 8000,2,4,6- tri- of polyurethane resin
7.0 parts of toluyl diphenyl phosphine oxide, 2.0 parts of hydroxycyclohexyl phenylketone, 0.2 part of BYK-3500 wetting agent, BHT stablize
0.7 part of agent, 20 parts of mill base, wherein mill base includes mill base monomer 1,7.6 parts of 6- hexanediyl ester, dispersant B YK-
21002 parts, 0.4 part of mill base auxiliary agent MEHQ and 10 parts of titanium dioxide pigment, wherein the partial size of mill base is 207nm, mill base in mill base
Monomer, dispersing agent, mill base auxiliary agent and titanium dioxide mass ratio be 38:10:2:50.
Embodiment 4
UV white inkjet ink is in terms of mass parts, composition are as follows: 58.8 parts of benzyl acrylate, six acrylic acid of dipentaerythritol
2.0 parts of ester, 2.0 parts of polyurethane acroleic acid oligomer, wherein molecular weight > 1500, the polyester resin of polyurethane acroleic acid oligomer
7.0 parts, wherein 8000,2,4,6- 7.0 parts of trimethylbenzoyl diphenyl phosphine oxide of molecular weight >, the 2- isopropyl of polyester resin
1.0 parts of thioxanthone, 1.0 parts of 2- hydroxy-2-methyl -1- phenyl -1- acetone, 0.5 part of BYK-337 levelling agent, BHT stabilizer
0.7 part, 20 parts of mill base, wherein mill base includes mill base monomer 1,7.6 parts of 6- hexanediyl ester, dispersant B YK-91522
Part, 0.4 part of mill base auxiliary agent MEHQ and 10 parts of titanium dioxide pigment, wherein the partial size of mill base is 221nm, mill base monomer in mill base,
The mass ratio of dispersing agent, mill base auxiliary agent and titanium dioxide is 38:10:2:50.
Comparative example 1
UV white inkjet ink is in terms of mass parts, composition are as follows: 55.1 parts of tetrahydrofurfuryl acrylate, three (ethyoxyl) three hydroxyls
4.0 parts of propane tri, 11 parts of polyurethane resin, wherein the molecular weight < 8000 of polyurethane resin, 2- benzyl -2-
7.0 parts of dimethylamino -1- (4- morpholinyl phenyl) butanone, 2.0 parts of 2,4- diethyl thiazolone, 0.2 part of BYK-3500 wetting agent,
0.7 part of BHT stabilizer, 20 parts of mill base, wherein mill base includes mill base monomer 1,7.6 parts of 6- hexanediyl ester, dispersing agent
BYK-21002 parts, 0.4 part of mill base auxiliary agent B HT and 10 parts of titanium dioxide pigment, wherein the partial size of mill base is 203nm, in mill base
Mill base monomer, dispersing agent, mill base auxiliary agent and titanium dioxide mass ratio be 38:10:2:50.
Comparative example 2
UV white inkjet ink is in terms of mass parts, composition are as follows: 56.3 parts of isodecyl acrylate, polyurethane acroleic acid are oligomeric
6.0 parts of object, wherein 7.5 parts of the molecular weight < 1500 of polyurethane acroleic acid oligomer, polyester resin, the wherein molecule of polyester resin
Measure < 8000,1.0 parts of 2,4,6- trimethylbenzoyl diphenyl phosphine oxide, 1.0 parts of 2- isopropyl thioxanthone, 2- hydroxyl -2-
Methyl-1-7.0 parts of phenyl-1- acetone, 0.5 part of BYK-337 levelling agent, 0.7 part of BHT stabilizer, 20 parts of mill base, wherein mill base packet
Include 7.6 parts of mill base monomer isodecyl acrylate, YK-91522 parts of dispersant B, 0.4 part of mill base auxiliary agent MEHQ and titanium dioxide
10 parts of pigment, wherein the partial size of mill base is 209nm, the quality of mill base monomer, dispersing agent, mill base auxiliary agent and titanium dioxide in mill base
Than for 38:10:2:50.
Comparative example 3
UV white inkjet ink is in terms of mass parts, composition are as follows: 50.1 parts of isodecyl acrylate, six propylene of dipentaerythritol
2.0 parts of acid esters, 2.0 parts of polyurethane acroleic acid oligomer, wherein molecular weight < 1500, the polyurethane of polyurethane acroleic acid oligomer
6.0 parts of resin, wherein 8000,2,4,6- 1.0 parts of trimethylbenzoyl diphenyl phosphine oxide of molecular weight <, the hydroxyl of polyester resin
7.0 parts of cyclohexylbenzene ketone, 1.0 parts of 2,4- diethyl thiazolone, 0.2 part of BYK-3500 wetting agent, 0.7 part of BHT stabilizer, color
30 parts of slurry, wherein mill base includes 11.4 parts of mill base monomer isodecyl acrylate, YK-91513 parts of dispersant B, mill base auxiliary agent B HT
0.6 part and 15 parts of titanium dioxide pigment, wherein the partial size of mill base is 215nm, mill base monomer, dispersing agent, mill base auxiliary agent in mill base
Mass ratio with titanium dioxide is 38:10:2:50.
Performance test
1, stability test
Using Britain's Malvern (Malvern) Nano S90 nanometer particle size instrument.Viscosity detection is flown using rich strangle in the U.S.
(Brookfield) Wells cone and plate viscometer.The test of filter property, adds 0.45 μm of aperture PP filter membrane using 1.0 μm of aperture glass filter membranes,
Filter condition filter property need to be less than 15min/1kg.Stability test, using 60 DEG C high temperature ageing 7 days, test aging after partial size,
Viscosity and filter property.Test result is as shown in table 1, wherein QC judgment criteria: ink 150~250nm of partial size, and filtering filter property is less than
15min/1kg；60 DEG C of stability test high temperature ageing 7 days, change of size is less than 10% and viscosity variation is less than 5%, and filter property is small
It is then qualified OK in 15min/1kg, on the contrary NG.
The stability for the UV white inkjet ink that 1 Examples 1 to 4 of table and comparative example 1~3 obtain
From 1 test result of table: UV white inkjet stability of ink provided by the invention is preferable, after aging 7 days, still
With preferable stability.
2, solidification and attached function test
Solidification rate test is carried UV cure lamp wavelength 395nm, is used five foundry of Ricoh using domestic wide-format printer
Industry spray head MH5420.Different print speed are set, ink cured situation is observed.With finger impression coating, if having solidification not
Generate entirely fade and viscid sense.Attachment degree carries out hundred lattice divisions to coating according to national standard GB-T9286-1998, using cross-cut tester,
Observation coating divides whether edge adheres to well.Test result is as shown in table 2:
The curability for the UV white inkjet ink that 2 Examples 1 to 4 of table and comparative example 1~3 obtain
Wherein, 4Pass is represented prints 2 times back and forth, that is, prints 4 completion picture proofs；6Pass is represented to be printed 3 times back and forth, that is, is printed
Brush 6 completion picture proofs.Printing times are more, and ink amount is more, and ink is thicker, are less susceptible to solidify.
OK represents coating surface without viscid sense；NG, which represents coating surface, viscid sense
As shown in Table 2, UV white inkjet ink provided by the present application has curing rate fast, and curing of coatings is completely special
Point, and UV white inkjet ink adhesivity provided by the present application is preferable.
3, whiteness and screening rate functional test
Whiteness and screening rate test are carried UV cure lamp wavelength 395nm, are used Ricoh five using domestic wide-format printer
For industrial nozzle MH5420.For the color lump printed, whiteness and screening rate are detected using leucometer.Test result such as 3 institute of table
Show:
The whiteness and screening rate for the UV white inkjet ink that 3 Examples 1 to 4 of table and comparative example 1~3 obtain
Examples 1 to 4 shows that, as mill base concentration improves, titanium dioxide colorant amount increases, then whiteness and screening rate are at just
Than increasing, but while colorant increase, if the dispersion of ink is bad, such as 2~3 stability of ink of comparative example is poor, then
It has disconnected ink and blocking sprayer phenomenon occurs, can not accurately measure whiteness and screening rate.And UV white inkjet ink provided by the present application
Water will not block spray head with high whiteness and while high screening rate, be not in the problem of ink of breaking.
In conclusion UV white inkjet stability of ink provided by the invention is preferable, after aging 7 days, still have preferable
Stability；UV white inkjet ink provided by the invention has preferable solidification adhesion property；And UV provided by the invention
White inkjet ink has preferable whiteness and screening rate, and is not in the problem for blocking spray head and the ink that breaks.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of UV white inkjet ink, in terms of mass parts, including following components:
Contain one of cyclic structure, hydroxyl, ethyoxyl, propoxyl group, amido and amino or a variety of in the structure of the monomer；
The photoinitiator is acylphosphine oxide photoinitiator, alpha-alcohol ketone photoinitiator, α-aminoketone photoinitiator
With one of thioxanthone photoinitiator or a variety of；
The white colorant includes pigment, and the pigment is titanium dioxide.
2. UV white inkjet ink according to claim 1, which is characterized in that the white colorant further includes mill base list
Body, dispersing agent and mill base auxiliary agent, the mill base monomer, dispersing agent, mill base auxiliary agent and pigment mass ratio be 30~60:5~30:
0~10:30~70.
3. UV white inkjet ink according to claim 1 or 2, which is characterized in that the preparation method of the white colorant
The following steps are included:
(1) dispersing agent is dissolved using mill base monomer, obtains pre- solution；
(2) pigment, mill base auxiliary agent and the step (1) are obtained pre- solution to be stirred, obtains pre-dispersed liquid；
(3) it is filtered after being ground the pre-dispersed liquid that the step (2) obtains, obtains white slurry.
4. UV white inkjet ink according to claim 1, which is characterized in that the monomer includes tetrahydrofurfuryl acrylic acid
Ester, ring trimethylolpropane formal acrylate, trihydroxy methyl cyclohexylacrylic ester, thanatol acrylate, benzyl
Base acrylate, 0-phenyl phenoxyethyl acrylate, 4- tert-butylcyclohexyl acrylate, isobornyl acrylate, methyl
Glycidyl acrylate, dicyclopentenyl acrylate, dicyclopentenyl (ethyoxyl) acrylate, ethoxy ethoxy second
Base acrylate, n (ethyoxyl) phenol acrylate, n (ethyoxyl) nonyl phenol acrylate, n (propoxyl group) nonyl phenol
Acrylate, N, N- dimethacrylamide, N- acryloyl morpholine, N- vinylpyrrolidone, cyclohexane dicarboxylic acid acid imide second
Base acrylate, dimethylaminoethyl acrylate methyl ammonia ethyl ester, acrylic acid diformazan ammonia ethyl ester, methacrylic acid diethylamino ethyl ester, 1,6- oneself
Omega-diol diacrylate, n (ethoxylation) 1,6 hexanediol diacrylate, 1,4 butanediol diacrylate, n (propoxyl group
Change) neopentylglycol diacrylate, tri (propylene glycol) diacrylate, dipropylene glycol diacrylate, triethylene-glycol
Diacrylate, n (ethyoxyl) bisphenol a diacrylate, polyethylene glycol (n) diacrylate, three (2- ethoxy) isocyanide ureas
Sour diacrylate, n (ethyoxyl) trimethylolpropane trimethacrylate, n (propoxyl group) glycerol triacrylate, the tricyclic last of the ten Heavenly stems
Alkane Dimethanol Diacrylate, pentaerythritol triacrylate, n (propoxyl group) trimethylolpropane trimethacrylate, three (2- hydroxyls
Ethyl) isocyanuric acid triacrylate, ethoxylation pentaerythritol tetraacrylate, double pentaerythritol methacrylate, two (three
Hydroxymethyl-propane) one of tetraacrylate, pentaerythritol tetraacrylate and double pentaerythritol C5 methacrylate or a variety of.
5. UV white inkjet ink according to claim 1, which is characterized in that the acylphosphine oxide photoinitiator packet
Include bis- (2,4,6- trimethylbenzoyl) phenyl phosphine oxides or 2,4,6- trimethylbenzoyl diphenyl phosphine oxide；
The alpha-alcohol ketone photoinitiator include hydroxycyclohexyl phenylketone, 2- hydroxy-2-methyl -1- phenyl -1- acetone and
One of 1,1'- (two -4,1- phenylene of methylene) bis- [2- hydroxy-2-methyl -1- acetone] or a variety of；
The α-aminoketone photoinitiator includes 2- benzyl -2- dimethylamino -1- (4- morpholinyl phenyl) butanone, 2- (4- first
Base Benzyl yl)-2- (dimethylamino)-1- (4- morpholinyl phenyl)-1- butanone and 2- methyl-1-(4- methyl mercapto phenyl)-2- morpholine
One of base -1- acetone is a variety of；
The thioxanthone photoinitiator includes 2,4- diethyl thiazolone or 2- isopropyl thioxanthone.
6. UV white inkjet ink according to claim 1, which is characterized in that the weight average molecular weight of the resin is 8000
~300000.
7. UV white inkjet ink according to claim 1 or 6, which is characterized in that the resin includes polyester resin, gathers
One of urethane resin, epoxy resin, vinyl chloride-vinyl acetate resin, Malin's acid resin, rosin resin and polyvinyl butyral resin or
The copolymer of a variety of or above-mentioned resin.
8. UV white inkjet ink according to claim 1, which is characterized in that further include the component of following parts by weight:
Oligomer (0,10] part；
Auxiliary agent (0,10] part.
9. UV white inkjet ink according to claim 8, which is characterized in that the oligomer includes polyester acrylic
Ester, polyether acrylate, urethane acrylate, epoxy acrylate, polyamide acrylate, in polyamine group acrylate
It is one or more.
10. UV white inkjet ink according to claim 8, which is characterized in that the weight average molecular weight of the oligomer is
1500~50000.
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