CN109777201A - A kind of antifalse LED ink and preparation method thereof - Google Patents
A kind of antifalse LED ink and preparation method thereof Download PDFInfo
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- CN109777201A CN109777201A CN201811506832.5A CN201811506832A CN109777201A CN 109777201 A CN109777201 A CN 109777201A CN 201811506832 A CN201811506832 A CN 201811506832A CN 109777201 A CN109777201 A CN 109777201A
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Abstract
The invention discloses a kind of antifalse LED ink and preparation method thereof, which is formed by weight ratio (part) are as follows: 40~52 parts of prepolymer, 20~40 parts of monomer reactivity diluent, 8~12 parts of photoinitiator, 8~23 parts of pigment, 1~3 part of auxiliary agent.Ink of the present invention have simple process, energy conservation and environmental protection, rate of drying is fast, anti-scratch, flexibility is good, adhesive force is good, antifalse effect is good, the features such as hardness is high, when printing is faced in the sunlight with side view, red and green two pairs of color changes are presented in color lump, have more special antifalse effect.
Description
Technical field
The present invention relates to a kind of ink, in particular to antifalse LED ink and preparation method thereof.
Background technique
Anti-forgery ink is the spy that the anti-fake material of property is added in ink vehicle and is process through special process
Kind printing ink, uses widely, as in various tickets, document, trade mark and mark in the field of many anti-counterfeit printings
On anti-counterfeit printing, false proof printing ink is all used.
Optically variable ink (Optically Variable Ink, abbreviation OVI) is also known as optical variable color counterfeiting ink, generally
A pair of of color is presented in its printing color lump, such as: red-green, yellow-green, green-blue, Jin-silver etc..It is just being seen under white light or side is seen, with
Two different colors are presented in the change at human eye visual angle, and light change characteristic is strong, and chromatic aberration is big, and feature is obvious, does not need any instrument
Device equipment can identify, color angular effect can not with any scanner high-definition, color copy machine and other set
Standby duplication, print characteristics can not be imitated with any other ink and mode of printing, and anti-fake reliability is extremely strong, by multiple states in the world
Family specifies for requiring the anti-fake of most tight, the maximum currency of difficulty and marketable securities, and domestic some famous producers have also used
In package anti-counterfeiting, the denomination number of such as the 5th set of 100 yuan of RMB, the 50 yuan note front lower right corner is to be printed using photochromatic printing ink
Brush.
In recent years, continuously improving with printing anti-counterfeiting technology, photochromatic printing ink new system is also continuing to bring out.Connect in ink
The antiforge function material of addition property in splicing, the special optical color varying counterfeit-proof ink being process by special process,
The class of printed matter can not only be greatly improved, moreover it is possible to which effectively excitation consumes, activates the market, and hits counterfeit and shoddy goods, especially
It is to combine LED-UV technology with luminescent material develop a kind of simple process, energy-saving and environment-friendly there is special optically variable anti-counterfeiting effect
The LED ink of fruit.
LED-UV light source is a kind of low energy curing light source, emit Single wavelength ultraviolet light 365nm, 375nm, 395nm and
405nm.Compared to traditional UV high-pressure sodium lamp, the advantages of LED-UV light source is: it is small to reach 25000-30000 for long service life
When；The power consumption of 80-90% can be saved；Ozone is not generated in Radiation Curing；Surface of the stock temperature can effectively be controlled
Within 40 DEG C, to print high temperature deformation material.Since LED-UV curing mode can only emit single wavelength
Ultraviolet light, when printing must use can under single wavelength cured ink.It is special to disclose invention at home for LED anti-forgery ink at present
Benefit has CN 107118611A, CN 107556809A and CN 108034303A etc., and main research is infrared anti-false, magnetism
It is anti-fake, ink-jet is anti-fake etc., without reference to this block content of optical anti-counterfeiting.Traditional solvent-borne optical variable color counterfeiting ink and UV optics become
Color anti-forgery ink is dry difficult under LED-UV light source, the printing solution of domestic maturation not yet.Existing market is in
Development phase, relevant inks are of less types, and correlative study and exploitation are still in blank stage.Therefore, develop a function admirable,
Antifalse LED ink product with broad prospect of application is particularly important.
Summary of the invention
The technical problem to be solved in the present invention is to provide antifalse LED ink and preparation method thereof, with technique
Simply, energy conservation and environmental protection and there is special optically variable anti-counterfeiting effect.
In order to solve the above technical problems, the purpose of the present invention is be achieved through the following technical solutions.
A kind of antifalse LED ink, the ink form by weight ratio (part) are as follows:
40~52 parts of prepolymer, 8~12 parts of photoinitiator, 8~23 parts of pigment, helps 20~40 parts of monomer reactivity diluent
1~3 part of agent.
Preferred: the prepolymer is by urethane acrylate, special acrylate and hyperbranched multifunctional reunion
Three kinds of mixture compositions of ester resin.
It is preferred: three kinds of mixtures its preferred proportion by weight of the prepolymer are as follows: urethane acrylate: special
Different acrylate: hyperbranched polyfunctional group polyester resin=1:2:1.
Preferred: the monomer reactivity diluent is by trimethylolpropane trimethacrylate TMPTA, tripropylene glycol two
Acrylate TPGDA, five or six acrylate DPHA of dipentaerythritol, tri- kinds of mixture compositions.
It is preferred:: three kinds of mixtures its preferred proportion by weight of the monomer reactivity diluent are as follows: TMPTA:
TPGDA:DPHA=1:2:1.
Preferred: the photoinitiator selects 2,4,6- trimethylbenzoyl phosphinic acid ethyl ester, 2- phenyl benzyl -2- diformazan
Base amine -1- (4- morpholine benzyl phenyl) butanone, 2- methyl -2- (4- morpholinyl) -1- [4- (methyl mercapto) phenyl] -1- acetone and 2- are different
Three kinds or four kinds mixture compositions of propyl thioxanthone, are preferably in a proportion of 2:1:1:2.
Preferred: the pigment includes optically variable pigments, and the optically variable pigments select red greening light to become powder and interfere red pearl
Two kinds of mixtures of light powder.
Preferred: the pigment further includes common pigments, and the common pigments select permanent yellow, phthalocyanine blue, in permanent bordeaux
Any one or more composition.
Preferred: red greening light becomes powder as 6-15 parts in the optically variable pigments, and interfering red pearl powder is 2-6 parts, and light becomes
The fineness of pigment is 2-25 microns.
A kind of preparation method of antifalse LED ink as described above, comprising steps of
A: pill tank high speed is added in prepolymer and monomer reactivity diluent by weight and is stirred 5~10 minutes；
B: adding photoinitiator and auxiliary agent, and 60~70 degree of constant temperature dispersion stirring 10~20 minutes lower；
C: and then pigment is added by weight in the state of stirring at low speed, continue to stir pre-dispersed 10~15 minutes；
D: finally grinding three to four times by hydraulic three-roller machine, detect ink fineness and viscosity meet the requirements up to finally at
Product.
The invention has the following advantages:
The invention has the advantages that antifalse LED ink provided by the invention, due to using LED-UV technology and luminous material
Material organically combines, and LED-UV light source wave band can be 365nm, 375nm, 385nm or 395nm, solidification power be 4W/cm2,
6W/cm2,8W/cm2.For traditional optical variable color counterfeiting ink, the anti-fake LED ink main advantage of optic metachromatic is just
It is environmental protection and energy saving, does not need to add any solvent.The anti-fake LED ink of optic metachromatic easy to implement, concealment with anti-counterfeiting technology
Preferably, the features such as bright in luster, can be applied to such as on various tickets, document, trade mark and mark anti-counterfeit printing.
Ink of the present invention have simple process, energy conservation and environmental protection, rate of drying is fast, anti-scratch, flexibility is good, adhesive force is good,
The features such as antifalse effect is good, and hardness is high, when printing is faced in the sunlight with side view, color lump is presented red and two pairs of colors of green and becomes
Change, there is more special antifalse effect.
Specific embodiment
Core concept of the present invention: the anti-fake anti-fake principle of LED ink of optic metachromatic is colorant using multi-coated interference in the present invention
The multilayer optical film flakelike powder of optical interference can occur for the broken film of optics as dispersion, and ink matrix will be more
Layer optical film sheet (it is required that front and back sides symmetric design) sprills are fixed in printed substrates with oriented approach.It can be seen that angle of light
Respectively 90 degree and 30 degree can visual turn colors (such as product are red green, golden/green, green/blue, green/pinkish red, green/black, golden/ash).
Anti-counterfeiting characteristic is when changing printed matter viewing angle, and color can change.
Color changeable effect is generated by the optically variable pigments in ink, and the main component of optically variable pigments is with special spectrum spy
The optical discoloration film fragment of property.Optical discoloration film is designed according to the interference of light principle of plural layers；It is by a variety of
The substance of different refractivity accurately controls each film layer according to specific film structure design requirement using high vacuum coating technology
Thickness, proportion and sequence, be subsequently deposited in identical carrier and formed.Its reflectance spectrum can be sent out with the change of incidence angle
Changing；I.e. with the variation of viewing angle, optically variable pigments can show different colors.If viewing angle changes 60 degree,
Two kinds of visibly different colors to occur.The first color can observe under total reflection, in other words can be in 90 degree of viewing angle
It is seen under degree.The viewing angle of 60 degree to about 30 degree of rotation, the first color disappear, and second of Color development is reinforced.Different angles
Spending lower color difference is the result that light reflects on the multilayer interface of film, reflects and interferes.The degree of reflection and refraction depends on
In the wavelength of light and the material of interface.
For fixed multilayered structure, reflected light is interfered with refraction light, so that the reflected light on second surface
The wavelength light that has be added, some wavelength light cancellations.With the change of viewing angle, the interference condition for generating given color disappears
It loses, then occurs generating the interference condition of the second color.The number and thickness of selection, the layering of material have determined color pair.Reason
By any combination that above can be the infrared part including light.Observation for human eye, preferably as product are red green, green/pinkish red, gold/
Green, green/blue high contrast color pair.
Prepolymer and monomer reactivity diluent in the anti-fake LED ink formulations of optic metachromatic constitute the basic framework of ink,
Substantially largely determine the basic performance after solidifying including ink settings such as hardness, flexibility, adhesive force.Due to LED-
The ultraviolet energy that UV low-power curing system is emitted is lower, and the degree of functionality that illuminated printing ink composition participates in reaction wants high
Or functional group needs the stronger reactivity that has, selects urethane acrylate, acrylate and hyperbranched multifunctional
Matrix resin of the reunion ester as prepolymer in formula.Optically variable pigments are added in ink easily makes the viscoplasticity of ink reduce and make oil
The plasticity of ink increases, and the mobility of ink can be deteriorated, and in order to make ink adapt to various stocks and working environment, needs to add list
Five or six acrylate of body reactive diluent trimethylolpropane trimethacrylate, tripropylene glycol diacrylate and dipentaerythritol
To adjust the viscosity and printability of ink.
The antifalse LED ink that the present invention is implemented, by weight ratio (part) are as follows: 40~52 parts of prepolymer, monomer are living
Property 20~40 parts of diluent, 8~12 parts of photoinitiator, 8~23 parts of pigment, 1~3 part of auxiliary agent.
Wherein, prepolymer is by urethane acrylate (Qing Te industrial group EB8215), and special acrylate (closes in East Asia
Cheng company M-408), hyperbranched polyfunctional group polyester resin (profound new company IRR859) mixing composition.It is preferred by weight
Ratio, urethane acrylate (Qing Te industrial group EB8215): special acrylate (East Asia synthesizes M-408): hyperbranched more
Functional group's polyester resin (profound new company IRR859)=1:2:1.
Monomer reactivity diluent is by trimethylolpropane trimethacrylate TMPTA (the limited public affairs of Sartomer (Guangzhou) chemistry
Department), tripropylene glycol diacrylate TPGDA (Sartomer (Guangzhou) Chemical Co., Ltd.), five or six acrylate of dipentaerythritol
(East Asia Synesis Company DPHA) mixing composition.Three kinds of mixtures its preferred proportion by weight of the monomer reactivity diluent
Are as follows: TMPTA:TPGDA:DPHA=1:2:1.
Photoinitiator selects model 2,4,6- trimethylbenzoyl phosphinic acid ethyl ester (the long limited public affairs of day chemistry share in Tianjin
Take charge of JRCure TPO-L), (the long day chemistry share in Tianjin is limited for 2- phenyl benzyl -2- dimethyl amine -1- (4- morpholine benzyl phenyl) butanone
Company JRCure369), 2- methyl -2- (4- morpholinyl) -1- [4- (methyl mercapto) phenyl] -1- acetone (long day chemistry share in Tianjin
Co., Ltd JRCure-907) and three kinds of 2- isopropyl thioxanthone (Tianjin Jiuri Chemical Co., Ltd. JRCure-ITX)
Or four kinds of mixture compositions.Preferred proportion TPO-L:369:907:ITX=2:1:1:2.
Wherein, pigment is made of optically variable pigments and/or common pigments, common pigments (three common pigments all selections gram
Lay grace toner) permanent yellow (P.Y 83), phthalocyanine blue (15DT7086), any one in permanent bordeaux (P.R 122) can be selected, and
Optically variable pigments select red greening light to become powder (the vast Green High Seience Technology Co., Ltd. in Beijing) and red pearl powder (the vast lattice in Beijing of interference
Woods High Seience Technology Co., Ltd.) two kinds of mixture collocation use, wherein red greening light becomes powder as 6-15 parts, interfere red pearl powder for 2-
6 parts, the fineness of optically variable pigments is 2-25 microns.
Wherein, auxiliary agent is made of BYK-310, BYK-185 and the mixing of polymerization inhibitor 510.
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, to this
Invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
Embodiment one
In the opening cylinder that stirs of a constant volume, it is separately added into 10 parts of urethane acrylates of prepolymer by weight
EB8215,20 parts of special acrylate M-408,10 parts of hyperbranched polyfunctional group polyester resin IRR859 and monomer reactivity diluent
10 parts of trimethylolpropane trimethacrylates, 20 parts of tripropylene glycol diacrylates, 10 parts of five or six acrylate of dipentaerythritol,
Using disc type agitating paddle high speed dispersion 5-10 minutes, then it is separately added into 369,2 parts of 2 parts of photoinitiators, 907,4 parts of photoinitiator light
1 part of BYK-310 of initiator ITX and auxiliary agent, 0.8 part of BYK-185 and 0.2 part of polymerization inhibitor 510,60~70 degree of constant temperature lower dispersion stirrings
10~20 minutes, 6 parts of red greening light are then added by weight in the state of stirring at low speed and become powder and 2 parts of red pearly-lustres of interference
Powder continues to stir pre-dispersed 10~15 minutes, finally grinds three to four times by hydraulic three-roller machine, detect ink fineness and viscosity
It meets the requirements up to final finished.
Embodiment two
In the opening cylinder that stirs of a constant volume, it is separately added into 11 parts of urethane acrylates of prepolymer by weight
EB8215,22 parts of special acrylate M-408,11 parts of hyperbranched polyfunctional group polyester resin IRR859 and monomer reactivity diluent
5 parts of trimethylolpropane trimethacrylates, 10 parts of tripropylene glycol diacrylates, 5 parts of five or six acrylate of dipentaerythritol, are adopted
With disc type agitating paddle high speed dispersion 5-10 minutes, then it is separately added into 4 parts of photoinitiator TPO-L, 2 parts of photoinitiators, 369,2 parts of light
Initiator 907,4 parts of photoinitiator ITX and 0.5 part of BYK-310 of auxiliary agent, 0.4 part of BYK-185 and 0.1 part of polymerization inhibitor 510, constant temperature
60~70 degree dispersion stirring 10~20 minutes lower, and 10 parts of permanent yellow P.Y are then added by weight in the state of stirring at low speed
83,9 parts of red greening light become powder and 4 parts of red pearl powders of interference, continue to stir pre-dispersed 10~15 minutes, finally pass through hydraulic three roller
Machine is ground three to four times, detects ink fineness and viscosity conforms to.
Embodiment three
In the opening cylinder that stirs of a constant volume, it is separately added into 12 parts of urethane acrylates of prepolymer by weight
EB8215,24 parts of special acrylate M-408,12 parts of hyperbranched polyfunctional group polyester resin IRR859 and monomer reactivity diluent
5 parts of trimethylolpropane trimethacrylates, 10 parts of tripropylene glycol diacrylates, 5 parts of five or six acrylate of dipentaerythritol, are adopted
With disc type agitating paddle high speed dispersion 5-10 minutes, then it is separately added into 4 parts of photoinitiator TPO-L, 2 parts of photoinitiators, 369,2 parts of light
1.5 parts of BYK-310 of initiator 907 and auxiliary agent, 1.2 parts of BYK-185 and 0.3 part of polymerization inhibitors 510,60~70 degree of constant temperature lower dispersions are stirred
It mixes 10~20 minutes, 15 parts of red greening light is then added by weight in the state of stirring at low speed and become powder and 6 parts of red pearls of interference
Light powder continues to stir pre-dispersed 10~15 minutes, finally grind three to four times by hydraulic three-roller machine, detects ink fineness and glue
Degree conforms to.
Example IV
In the opening cylinder that stirs of a constant volume, it is separately added into 13 parts of urethane acrylates of prepolymer by weight
EB8215,26 parts of special acrylate M-408,13 parts of hyperbranched polyfunctional group polyester resin IRR859 and monomer reactivity diluent
5 parts of trimethylolpropane trimethacrylates, 10 parts of tripropylene glycol diacrylates, 5 parts of five or six acrylate of dipentaerythritol, are adopted
With disc type agitating paddle high speed dispersion 5-10 minutes, then it is separately added into 4 parts of photoinitiator TPO-L, 2 parts of photoinitiators, 369,2 parts of light
0.5 part of BYK-310 of initiator 907 and auxiliary agent, 0.4 part of BYK-185 and 0.1 part of polymerization inhibitor 510,60~70 degree of constant temperature lower dispersions are stirred
It mixes 10~20 minutes, 9 parts of phthalocyanine blue P.B15:4 is then added by weight in the state of stirring at low speed, 8 parts of red greening light become
Powder and 2 parts of red pearl powders of interference, continue to stir pre-dispersed 10~15 minutes, finally grind three to four times by hydraulic three-roller machine,
Detection ink fineness and viscosity conform to.
Embodiment five
In the opening cylinder that stirs of a constant volume, it is separately added into 10 parts of urethane acrylates of prepolymer by weight
EB8215,20 parts of special acrylate M-408,10 parts of hyperbranched polyfunctional group polyester resin IRR859 and monomer reactivity diluent
8 parts of trimethylolpropane trimethacrylates, 16 parts of tripropylene glycol diacrylates, 8 parts of five or six acrylate of dipentaerythritol, are adopted
With disc type agitating paddle high speed dispersion 5-10 minutes, then it is separately added into 369,2 parts of 2 parts of photoinitiators, 907,4 parts of photoinitiator light and draws
Send out 0.5 part of BYK-310 of agent ITX and auxiliary agent, 0.4 part of BYK-185 and 0.1 part of polymerization inhibitor 510,60~70 degree of constant temperature lower dispersion stirrings
10~20 minutes, 7 parts of permanent bordeauxs (P.R 122) are then added by weight in the state of stirring at low speed, 9 parts of red greening light become
Powder and 3 parts of red pearl powders of interference, continue to stir pre-dispersed 10~15 minutes, finally grind three to four times by hydraulic three-roller machine,
Detection ink fineness and viscosity conform to.
The all technical that antifalse LED ink is made is detected, properties test index such as table 1:
Table 1
Each proportioning components can be modified test modulation according to the requirement for the product printed in aforementioned range
And reach the print request for meeting product.
In conclusion above embodiment is only to describe several embodiments of the present invention, it is of the invention not represent realization
All modes, all technical solutions using equivalent substitution or equivalent transformation form, fall within the scope of protection of the present invention.
Antifalse LED ink provided by the present invention and preparation method thereof is described in detail above, herein
Apply that a specific example illustrates the principle and implementation of the invention, the explanation of above example is only intended to help
Understand method and its core concept of the invention；At the same time, for those skilled in the art, according to the thought of the present invention,
There will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not be construed as to this
The limitation of invention.
Claims (10)
1. a kind of antifalse LED ink, which is characterized in that the ink forms by weight ratio (part) are as follows:
40~52 parts of prepolymer, 20~40 parts of monomer reactivity diluent, 8~12 parts of photoinitiator, 8~23 parts of pigment, auxiliary agent 1~
3 parts.
2. antifalse LED ink as described in claim 1, it is characterised in that: the prepolymer is by polyurethane propylene
Three kinds of acid esters, special acrylate and hyperbranched polyfunctional group polyester resin mixture compositions.
3. antifalse LED ink as claimed in claim 2, it is characterised in that: three kinds of mixtures of the prepolymer are by weight
Amount is than counting its preferred proportion are as follows: urethane acrylate: special acrylate: hyperbranched polyfunctional group polyester resin=1:2:1.
4. antifalse LED ink as described in claim 1, it is characterised in that: the monomer reactivity diluent is by three
Hydroxymethyl-propane triacrylate TMPTA, tripropylene glycol diacrylate TPGDA, five or six acrylate DPHA of dipentaerythritol
Three kinds of mixture compositions.
5. antifalse LED ink as claimed in claim 4, it is characterised in that: three kinds of the monomer reactivity diluent are mixed
Close object its preferred proportion by weight are as follows: TMPTA:TPGDA:DPHA=1:2:1.
6. antifalse LED ink as described in claim 1, it is characterised in that: the photoinitiator selects 2,4,6- tri-
Methyl benzoyl phosphinic acid ethyl ester, 2- phenyl benzyl -2- dimethyl amine -1- (4- morpholine benzyl phenyl) butanone, 2- methyl -2- (4-
Quinoline base) three kinds or four kinds mixture compositions of -1- [4- (methyl mercapto) phenyl] -1- acetone and 2- isopropyl thioxanthone, preferably compare
Example is 2:1:1:2.
7. antifalse LED ink as described in claim 1, it is characterised in that: the pigment includes optically variable pigments, described
Optically variable pigments select red greening light to become powder and interfere red two kinds of mixtures of pearl powder.
8. antifalse LED ink as claimed in claim 7, it is characterised in that: the pigment further includes common pigments, described
Common pigments select permanent yellow, phthalocyanine blue, any one or more composition in permanent bordeaux.
9. antifalse LED ink as claimed in claim 7, it is characterised in that: red greening light becomes in the optically variable pigments
Powder is 6-15 parts, and interfering red pearl powder is 2-6 parts, and the fineness of optically variable pigments is 2-25 microns.
10. a kind of preparation method of antifalse LED ink as described in claim 1, which is characterized in that comprising steps of
A: pill tank high speed is added in prepolymer and monomer reactivity diluent by weight and is stirred 5~10 minutes；
B: adding photoinitiator and auxiliary agent, and 60~70 degree of constant temperature dispersion stirring 10~20 minutes lower；
C: and then pigment is added by weight in the state of stirring at low speed, continue to stir pre-dispersed 10~15 minutes；
D: finally grinding three to four times by hydraulic three-roller machine, detects ink fineness and viscosity meets the requirements up to final finished.
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| CN112778821A (en) * | 2020-03-18 | 2021-05-11 | 铭钜新材料科技(上海)有限公司 | UV-curable scratch-type anti-counterfeiting ink and preparation and application methods thereof |
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