Disclosure of Invention
The present invention is directed to solving or improving at least one of the technical problems of the prior art.
To this end, a first aspect of the invention proposes an ink.
A second aspect of the invention provides a printed article.
In view of the above, according to a first aspect of the present invention, there is provided an ink comprising: near infrared absorbing material and auxiliary material, wherein the near infrared absorbing material comprises one or more compounds, and the chemical general formula of the compounds is MxWOyW is tungsten, O is oxygen, and M is at least one of an alkali metal, an alkaline earth metal, hydrogen, helium, and rhenium.
The ink provided by the invention comprises a near infrared absorption material and an auxiliary material, wherein the near infrared absorption material comprises a mixture of one or more compounds, and the chemical general formula of the compounds is MxWOyWherein M is at least one of an alkali metal, an alkaline earth metal, hydrogen, helium and rhenium, W is tungsten and O is oxygen, i.e., the compound includes tungstate radicals and at least one of an alkali metal, an alkaline earth metal, hydrogen, helium and rhenium, and the compound itself is light in color or in a light-transmitting state, so that a light-colored ink or a vivid-colored ink can be prepared using the compound, and the compound is easy to prepare and easy to produce.
In addition, the ink in the above technical solution provided by the present invention may further have the following additional technical features:
on the basis of the technical scheme, M is at least one of alkali metal, alkaline earth metal, hydrogen, helium and rhenium.
In the embodiment, the ink comprises a near-infrared absorption material and an auxiliary material, wherein the average absorption rate of the near-infrared absorption material between 750nm and 1250nm of a near-infrared band is more than 80%, and the lowest reflectivity between 400nm and 700nm of a visible light band is higher than 80%, so that most of near-infrared light is absorbed, most of visible light is reflected, the anti-counterfeiting effect of the ink is clearer, and the effect is better.
On the basis of any of the above technical solutions, further, a value range of x is greater than or equal to 0.01 and less than 2, and a value range of y is greater than or equal to 2 and less than or equal to 3.
In this example, Compound MxWOyIn the method, the value range of x is more than or equal to 0.01 and less than 2, the value range of y is more than or equal to 2 and less than or equal to 3, the compound is easy to prepare, the production cost is reduced, the obtained compound is more stable, and the stability of the ink is improved.
On the basis of any one of the above technical solutions, further, a value range of x is greater than or equal to 0.2 and less than 1, and y is equal to 3.
In this example, Compound MxWOyIn the method, the value range of x is more than or equal to 0.2 and less than 1, y is equal to 3, the compound is easier to prepare, the production cost is further reduced, the obtained compound is more stable, and the stability of the ink is improved.
On the basis of any one of the above technical solutions, further, the value ranges of the particle diameters of the near-infrared absorbing material and the auxiliary material are both between 1nm and 1000 nm.
In the technical scheme, the value ranges of the particle diameters of the near-infrared absorption material and the auxiliary material are both between 1nm and 1000nm, so that the fineness of particles in the ink is ensured, the fluidity is improved, the agglomeration is avoided, and the printing or writing effect is improved.
On the basis of any one of the above technical solutions, further, the weight percentage of the near-infrared absorbing material is greater than or equal to 0.1% and less than or equal to 15%.
In the technical scheme, the weight percentage of the near-infrared absorption material is more than or equal to 0.1 percent and less than or equal to 15 percent, so that the contents of the near-infrared absorption material and the auxiliary material are more balanced, and the adhesiveness and the anti-counterfeiting effect of the ink are more balanced.
Specifically, the weight percentage of the near-infrared absorbing material is 0.1% or more and 10% or less.
On the basis of any one of the above technical solutions, further, the auxiliary material includes: organic pigment, connecting material, filler and auxiliary agent; the weight percentage of the near infrared absorption material is more than or equal to 2 percent and less than or equal to 15 percent; the weight percentage of the organic pigment is more than or equal to 0 percent and less than or equal to 20 percent; the weight percentage of the connecting material is more than or equal to 35 percent and less than or equal to 60 percent; the weight percentage of the filler is more than or equal to 10 percent and less than or equal to 45 percent; the weight percentage of the auxiliary agent is more than or equal to 1 percent and less than or equal to 5 percent.
In the technical scheme, by adopting the weight percentage ratio, the weight percentage of the near-infrared absorption material is not more than 15 percent, so that the macroscopic chromatic aberration of the light wave in a visible light wave band, namely a 380nm to 700nm wave band is not generated, but the light wave in a near-infrared region, namely a 750nm to 1250nm wave band has obvious spectral absorption performance.
In addition, due to the matching, the fluidity and the adhesiveness of the ink are ensured, the resistance of the ink is improved, after a printed product printed with the ink is soaked in acid, alkali and an organic solvent or exposed to the sun for a long time, the spectral absorption of the printed product in a near infrared region of 750nm to 1250nm does not change obviously, and the anti-counterfeiting application value of high-added-value products such as valuable securities is extremely high.
On the basis of any one of the above technical solutions, further, the auxiliary material includes: organic pigment, connecting material, filler and auxiliary agent; the weight percentage of the near infrared absorption material is more than or equal to 0.5 percent and less than or equal to 15 percent; the weight percentage of the organic pigment is more than or equal to 0 percent and less than or equal to 20 percent; the weight percentage of the connecting material is more than or equal to 40 percent and less than or equal to 65 percent; the weight percentage of the filler is more than or equal to 5 percent and less than or equal to 25 percent; the weight percentage of the auxiliary agent is more than or equal to 1 percent and less than or equal to 10 percent.
In the technical scheme, by adopting the weight percentage ratio, the weight percentage of the near-infrared absorption material is not more than 15 percent, so that the macroscopic chromatic aberration of the light wave in a visible light wave band, namely a 380nm to 700nm wave band is not generated, but the light wave in a near-infrared region, namely a 750nm to 1250nm wave band has obvious spectral absorption performance.
In addition, due to the matching, the fluidity and the adhesiveness of the ink are ensured, the resistance of the ink is improved, after a printed product printed with the ink is soaked in acid, alkali and an organic solvent or exposed to the sun for a long time, the spectral absorption of the printed product in a near infrared region of 750nm to 1250nm does not change obviously, and the anti-counterfeiting application value of high-added-value products such as valuable securities is extremely high.
On the basis of any one of the above technical solutions, further, the auxiliary material includes: organic pigment, binder, solvent and anti-settling agent; the weight percentage of the near infrared absorption material is more than or equal to 2 percent and less than or equal to 15 percent; the weight percentage of the organic pigment is more than or equal to 0 percent and less than or equal to 35 percent; the weight percentage of the connecting material is more than or equal to 15 percent and less than or equal to 45 percent; the weight percentage of the solvent is more than or equal to 20 percent and less than or equal to 50 percent; the weight percentage of the anti-precipitation agent is more than or equal to 0.5 percent and less than or equal to 5 percent.
In the technical scheme, by adopting the weight percentage ratio, the weight percentage of the near-infrared absorption material is not more than 15 percent, so that the macroscopic chromatic aberration of the light wave in a visible light wave band, namely a 380nm to 700nm wave band is not generated, but the light wave in a near-infrared region, namely a 750nm to 1250nm wave band has obvious spectral absorption performance.
In addition, due to the matching, the fluidity and the adhesiveness of the ink are ensured, the resistance of the ink is improved, after a printed product printed with the ink is soaked in acid, alkali and an organic solvent or exposed to the sun for a long time, the spectral absorption of the printed product in a near infrared region of 750nm to 1250nm does not change obviously, and the anti-counterfeiting application value of high-added-value products such as valuable securities is extremely high.
On the basis of any one of the above technical solutions, further, the auxiliary material includes: a binder, a solvent and an anti-settling agent; the weight percentage of the near infrared absorption material is more than or equal to 1 percent and less than or equal to 15 percent; the weight percentage of the connecting material is more than or equal to 10 percent and less than or equal to 30 percent; the weight percentage of the solvent is more than or equal to 60 percent and less than or equal to 80 percent; the weight percentage of the anti-precipitation agent is more than or equal to 0.5 percent and less than or equal to 5 percent.
In the technical scheme, by adopting the weight percentage ratio, the weight percentage of the near-infrared absorption material is not more than 15 percent, so that the macroscopic chromatic aberration of the light wave in a visible light wave band, namely a 380nm to 700nm wave band is not generated, but the light wave in a near-infrared region, namely a 750nm to 1250nm wave band has obvious spectral absorption performance.
In addition, due to the matching, the fluidity and the adhesiveness of the ink are ensured, the resistance of the ink is improved, after a printed product printed with the ink is soaked in acid, alkali and an organic solvent or exposed to the sun for a long time, the spectral absorption of the printed product in a near infrared region of 750nm to 1250nm does not change obviously, and the anti-counterfeiting application value of high-added-value products such as valuable securities is extremely high.
On the basis of any one of the above technical solutions, further, the binder includes at least one of the following: alkyd resins, phenolic resins, urea-formaldehyde resins, gum oils and polymeric sub-oils; the filler includes at least one of: calcium carbonate, silica and bentonite; the auxiliary agent comprises at least one of the following components: paraffin, mineral oil, high boiling point solvent and drying agent.
In the technical scheme, the connecting material comprises at least one of alkyd resin, phenolic resin, urea-formaldehyde resin, colloid oil and polymer sub-oil; the filler comprises at least one of calcium carbonate, silica and bentonite; the auxiliary agent comprises at least one of paraffin, mineral oil, a high-boiling-point solvent and a drying agent, and further the light color or the light transmittance of the material is utilized, so that the color difference of the ink is avoided, the preparation of different colors of the ink is more convenient, and the adherence, the flowability and the dispersibility of the raw materials of the ink can be better ensured.
On the basis of any one of the above technical solutions, further, the binder includes at least one of the following: acrylic, phenolic and cellulosic resins; the solvent includes at least one of: esters, ketones, and alcohols; the anti-settling agent comprises: fumed silica.
In the technical scheme, the connecting material comprises at least one of acrylic acid, phenolic resin and cellulose resin; the solvent comprises at least one of esters, ketones and alcohols; the anti-settling agent comprises fumed silica, and further utilizes the light color or light transmittance of the materials to avoid the color difference of the ink, so that the preparation of different colors of the ink is more convenient, and the adherence, the flowability and the dispersibility of the raw materials of the ink can be better ensured.
According to a second aspect of the present invention, there is provided a printed product comprising: a carrier on which an ink as set forth in any of the above claims is printed.
The printed product provided by the invention comprises the ink provided by any one of the technical schemes, so that the ink provided by any one of the technical schemes is not mentioned.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Inks provided according to some embodiments of the present invention are described below with reference to fig. 3-5.
Example 1:
the invention provides ink which comprises a near-infrared absorption material and an auxiliary material, wherein the near-infrared absorption material comprises a compound, and the chemical general formula of the compound is MxWOyWherein M is at least one of an alkali metal, an alkaline earth metal, hydrogen H, helium He, and a rare earth element rhenium Re, W is tungsten, and O is oxygen, i.e., the compound includes tungstate radicals, and at least one of an alkali metal, an alkaline earth metal, hydrogen, helium, and rhenium.
Specifically, M includes at least one of:
elemental hydrogen H, elemental helium He.
The alkali metal comprises element Li, element Na, element K, element Rb and element Cs.
The alkaline earth metal comprises beryllium Be, magnesium Mg, calcium Ca, strontium Sr and barium Ba.
The rare earth element comprises the element rhenium Re.
Wherein M is an element or a mixture of elements, and when M is a mixture of elements, x is a number common to the elements.
Since the tungstate group compound itself is light in color or in a light-transmitting state, a light-colored ink or a vivid ink can be prepared using the compound, and the near-infrared absorption characteristics of the compound are considered.
Specifically, the chemical formula of the compound may be HxWOy,HexWOy,LixWOy,NaxWOy,KxWOy,RbxWOy,CsxWOy,BexWOy,MgxWOy,CaxWOy,SrxWOy,BaxWOy,RexWOy,(LiNa)xWOy,(NaK)xWOy,(KRb)xWOy,(NaMg)xWOy,(NaCa)xWOy,(NaKCa)xWOy,(NaMgBa)xWOyAnd the like, although the above compounds are at least partially exemplified, and those skilled in the art can adopt other compounds with tungstate radical according to the actual situation.
Example 2:
the invention provides ink which comprises a near-infrared absorption material and an auxiliary material, wherein the near-infrared absorption material comprises a plurality of compounds, and the chemical general formula of each compound in the plurality of compounds is MxWOyWherein M is at least one of an alkali metal, an alkaline earth metal, hydrogen H, helium He, and a rare earth element rhenium Re, W is tungsten, and O is oxygen, i.e., the compound includes tungstate radicals, and at least one of an alkali metal, an alkaline earth metal, hydrogen, helium, and rhenium. The plurality of compounds may be two, three, four or five, and so on.
Specifically, M includes at least one of:
elemental hydrogen H, elemental helium He.
The alkali metal comprises element Li, element Na, element K, element Rb and element Cs.
The alkaline earth metal comprises beryllium Be, magnesium Mg, calcium Ca, strontium Sr and barium Ba.
The rare earth element comprises the element rhenium Re.
Wherein M in a compound is an element or a mixture of elements, and when M is a mixture of elements, x is the number common to the elements.
Since the tungstate group compound itself is light in color or in a light-transmitting state, a light-colored ink or a vivid ink can be prepared using the compound, and the near-infrared absorption characteristics of the compound are considered.
Specifically, the chemical formula of the compound may be HxWOyAnd HexWOy,LixWOyAnd NaxWOy,KxWOyAnd RbxWOy,CsxWOyAnd BexWOy,MgxWOyAnd CaxWOy,SrxWOyAnd BaxWOy,RexWOyAnd (LiNa)xWOy,(NaK)xWOyAnd (KRb)xWOy,(NaMg)xWOyAnd (NaCa)xWOy,(NaKCa)xWOyAnd (NaMgBa)xWOy,HxWOyAnd (NaMg)xWOy,(NaKCa)xWOyAnd LixWOy,HexWOyAnd (NaMgBa)xWOyAnd so on. Of course, the above compounds are at least partially exemplified, and those skilled in the art can adopt other compounds with tungstate radical according to the actual situation.
Example 3:
in addition to example 1 or example 2, further, MxWOyIn the formula, x is more than or equal to 0.01 and less than or equal to 2 and y is more than or equal to 2 and less than or equal to 3.
The compound is better prepared, the production cost is reduced, the obtained compound is more stable, and the stability of the ink is improved. Specifically, x may be 0.01, 0.02, 0.03 … … 1.97.97, 1.98, 1.99, 2.00, that is, x may take the value of two digits after any decimal point from 0.01 to 2. y can be 2.00, 2.01, 2.02 … … 2.97, 2.98, 2.99 and 3.00, namely y can take the value of two digits after any decimal point from 2 to 3.
Specifically, the values of x and y will affect the absorbance and reflectance of the near infrared absorbing material for different wavelength bands, and as x and y change, the average absorbance of the near infrared absorbing material in the near infrared band between 750nm and 1250nm and the minimum reflectance in the visible band between 400nm and 700nm change.
According to verification, based on x being more than or equal to 0.01 and less than or equal to 2 and y being more than or equal to 2 and less than or equal to 3, the average absorption rate of the near-infrared absorption material between 750nm and 1250nm of a near-infrared band is more than 80 percent, and the lowest reflectivity between 400nm and 700nm of a visible light band is higher than 80 percent. Further, 0.2 ≦ x <1, and y ≦ 3. The compound is better prepared, the production cost is reduced, the obtained compound is more stable, and the stability of the ink is improved.
Based on 0.2 ≦ x <1 and y ≦ 3, the average absorption rate of the near infrared absorbing material between 750nm and 1250nm in the near infrared band and the minimum reflectance between 400nm and 700nm in the visible band can be further improved.
Example 4:
on the basis of any one of embodiments 1 to 3, further, the value ranges of the particle diameters of the near-infrared absorbing material and the auxiliary material are both between 1nm and 1000nm, so that the fineness of particles in the ink is ensured, the fluidity is improved, the agglomeration is avoided, and the printing or writing effect is improved.
Further, the particle sizes of the near-infrared absorbing material and the auxiliary material are both in the range of 1nm to 120 nm.
Furthermore, the particle sizes of the near-infrared absorbing material and the auxiliary material are both in the range of 1nm to 50 nm.
Among them, the smaller the particle size of the near-infrared absorbing material and the auxiliary material is, the more suitable the use by the inkjet process is, and the finer the particle size is, the finer the pattern display by the ink is.
Example 5:
on the basis of any one of embodiments 1 to 4, further, the average absorption rate of the near-infrared absorption material between 750nm and 1250nm of the near-infrared band is greater than 80%, and the minimum reflectivity between 400nm and 700nm of the visible light band is greater than 80%, so that most of the near-infrared light is absorbed, most of the visible light is reflected, and the anti-counterfeiting effect of the ink is clearer and better.
Example 6:
on the basis of any one of embodiment 1 to embodiment 5, the ink provided by the invention further comprises a near infrared absorption material, an organic pigment, a connecting material, a filler and an auxiliary agent; the weight percentage of the near infrared absorption material is more than or equal to 2 percent and less than or equal to 15 percent; the weight percentage of the organic pigment is more than or equal to 0 percent and less than or equal to 20 percent; the weight percentage of the connecting material is more than or equal to 35 percent and less than or equal to 60 percent; the weight percentage of the filler is more than or equal to 10 percent and less than or equal to 40 percent; the weight percentage of the auxiliary agent is more than or equal to 1 percent and less than or equal to 5 percent.
By adopting the weight percentage ratio, the weight percentage of the near-infrared absorption material is not more than 15 percent, and further, the macroscopic chromatic aberration of the light wave in the invisible light wave band, namely the wave band of 380nm to 700nm, but the light wave in the near-infrared region, namely the light wave in the wave band of 750nm to 1250nm, has obvious spectral absorption performance. In addition, due to the matching, the fluidity and the adhesiveness of the ink are ensured, the resistance of the ink is improved, after a printed product printed with the ink is soaked in acid, alkali and an organic solvent or exposed to the sun for a long time, the spectral absorption of the printed product in a near infrared region of 750nm to 1250nm does not change obviously, and the anti-counterfeiting application value of high-added-value products such as valuable securities is extremely high.
Specifically, the printed matter adopting the ink can still keep the average absorption rate of 750nm to 1250nm in a near infrared band to be more than 80% after being soaked by acid, alkali, ethanol, acetone, ethyl acetate and gasoline and subjected to a sun-proof test, and the lowest reflection rate of 400nm to 700nm in a visible light band is more than 80%.
Wherein, the binder comprises at least one of the following components: alkyd resins, phenolic resins, urea-formaldehyde resins, gum oils, and polymerized fats, among others.
The filler includes at least one of: calcium carbonate, silica, bentonite, and the like.
The auxiliary agent comprises at least one of the following components: paraffin, mineral oil, high boiling point solvent, drying agent and the like.
In this embodiment, the binder includes at least one of an alkyd resin, a phenolic resin, a urea-formaldehyde resin, a gelled oil, and a polymeric sub-oil; the filler comprises at least one of calcium carbonate, silica and bentonite; the auxiliary agent comprises at least one of paraffin, mineral oil, a high-boiling-point solvent and a drying agent, and further the light color or the light transmittance of the material is utilized, so that the color difference of the ink is avoided, the preparation of different colors of the ink is more convenient, and the adherence, the flowability and the dispersibility of the raw materials of the ink can be better ensured.
In particular, the binder, filler and auxiliary agent may be in any combination.
Example 7:
on the basis of any one of embodiment 1 to embodiment 5, the ink provided by the invention further comprises a near infrared absorption material, an organic pigment, a connecting material, a filler and an auxiliary agent; the weight percentage of the near infrared absorption material is more than or equal to 0.5 percent and less than or equal to 15 percent; the weight percentage of the organic pigment is more than or equal to 0 percent and less than or equal to 20 percent; the weight percentage of the connecting material is more than or equal to 40 percent and less than or equal to 65 percent; the weight percentage of the filler is more than or equal to 5 percent and less than or equal to 25 percent; the weight percentage of the auxiliary agent is more than or equal to 1 percent and less than or equal to 10 percent.
By adopting the weight percentage ratio, the weight percentage of the near-infrared absorption material is not more than 15 percent, and further, the macroscopic chromatic aberration of the light wave in the invisible light wave band, namely the wave band of 380nm to 700nm, but the light wave in the near-infrared region, namely the light wave in the wave band of 750nm to 1250nm, has obvious spectral absorption performance. In addition, due to the matching, the fluidity and the adhesiveness of the ink are ensured, the resistance of the ink is improved, after a printed product printed with the ink is soaked in acid, alkali and an organic solvent or exposed to the sun for a long time, the spectral absorption of the printed product in a near infrared region of 750nm to 1250nm does not change obviously, and the anti-counterfeiting application value of high-added-value products such as valuable securities is extremely high.
Specifically, the printed matter adopting the ink can still keep the average absorption rate of 750nm to 1250nm in a near infrared band to be more than 80% after being soaked by acid, alkali, ethanol, acetone, ethyl acetate and gasoline and subjected to a sun-proof test, and the lowest reflection rate of 400nm to 700nm in a visible light band is more than 80%.
Wherein, the binder comprises at least one of the following components: alkyd resins, phenolic resins, urea-formaldehyde resins, gum oils, and polymerized fats, among others.
The filler includes at least one of: calcium carbonate, silica, bentonite, and the like.
The auxiliary agent comprises at least one of the following components: paraffin, mineral oil, high boiling point solvent, drying agent and the like.
In this embodiment, the binder includes at least one of an alkyd resin, a phenolic resin, a urea-formaldehyde resin, a gelled oil, and a polymeric sub-oil; the filler comprises at least one of calcium carbonate, silica and bentonite; the auxiliary agent comprises at least one of paraffin, mineral oil, a high-boiling-point solvent and a drying agent, and further the light color or the light transmittance of the material is utilized, so that the color difference of the ink is avoided, the preparation of different colors of the ink is more convenient, and the adherence, the flowability and the dispersibility of the raw materials of the ink can be better ensured.
In particular, the binder, filler and auxiliary agent may be in any combination.
Example 8:
on the basis of any one of embodiment 1 to embodiment 5, further, the present invention provides an ink comprising a near-infrared absorbing material, an organic pigment, a binder, a solvent and an anti-settling agent; the weight percentage of the near infrared absorption material is more than or equal to 2 percent and less than or equal to 15 percent; the weight percentage of the organic pigment is more than or equal to 0 percent and less than or equal to 35 percent; the weight percentage of the connecting material is more than or equal to 15 percent and less than or equal to 45 percent; the weight percentage of the solvent is more than or equal to 20 percent and less than or equal to 50 percent; the weight percentage of the anti-precipitation agent is more than or equal to 0.5 percent and less than or equal to 5 percent.
By adopting the weight percentage ratio, the weight percentage of the near-infrared absorption material is not more than 15 percent, and further, the macroscopic chromatic aberration of the light wave in the invisible light wave band, namely the wave band of 380nm to 700nm, but the light wave in the near-infrared region, namely the light wave in the wave band of 750nm to 1250nm, has obvious spectral absorption performance. In addition, due to the matching, the fluidity and the adhesiveness of the ink are ensured, the resistance of the ink is improved, after a printed product printed with the ink is soaked in acid, alkali and an organic solvent or exposed to the sun for a long time, the spectral absorption of the printed product in a near infrared region of 750nm to 1250nm does not change obviously, and the anti-counterfeiting application value of high-added-value products such as valuable securities is extremely high.
Specifically, the printed matter adopting the ink can still keep the average absorption rate of 750nm to 1250nm in a near infrared band to be more than 80% after being soaked by acid, alkali, ethanol, acetone, ethyl acetate and gasoline and subjected to a sun-proof test, and the lowest reflection rate of 400nm to 700nm in a visible light band is more than 80%.
Wherein, the binder comprises at least one of the following components: acrylic, phenolic, and cellulosic resins.
The solvent includes at least one of: esters, ketones, and alcohols, wherein esters include: ethyl acetate, butyl acetate, and the like, ketones include: butanone, and the like, alcohols include: ethanol, isopropanol, and the like.
The anti-settling agent comprises: fumed silica.
In this embodiment, the binder includes at least one of acrylic, phenolic, and cellulosic resins; the solvent comprises at least one of esters, ketones and alcohols; the anti-settling agent comprises fumed silica, and further utilizes the light color or light transmittance of the materials to avoid the color difference of the ink, so that the preparation of different colors of the ink is more convenient, and the adherence, the flowability and the dispersibility of the raw materials of the ink can be better ensured.
Specifically, the binder, the solvent, and the anti-settling agent may be in any combination.
Example 9:
on the basis of any one of embodiment 1 to embodiment 5, further, the present invention provides an ink comprising a near-infrared absorbing material, a binder, a solvent and an anti-settling agent; the weight percentage of the near infrared absorption material is more than or equal to 1 percent and less than or equal to 15 percent; the weight percentage of the connecting material is more than or equal to 10 percent and less than or equal to 30 percent; the weight percentage of the solvent is more than or equal to 60 percent and less than or equal to 80 percent; the weight percentage of the anti-precipitation agent is more than or equal to 0.5 percent and less than or equal to 5 percent.
By adopting the weight percentage ratio, the weight percentage of the near-infrared absorption material is not more than 15 percent, and further, the macroscopic chromatic aberration of the light wave in the invisible light wave band, namely the wave band of 380nm to 700nm, but the light wave in the near-infrared region, namely the light wave in the wave band of 750nm to 1250nm, has obvious spectral absorption performance. In addition, due to the matching, the fluidity and the adhesiveness of the ink are ensured, the resistance of the ink is improved, after a printed product printed with the ink is soaked in acid, alkali and an organic solvent or exposed to the sun for a long time, the spectral absorption of the printed product in a near infrared region of 750nm to 1250nm does not change obviously, and the anti-counterfeiting application value of high-added-value products such as valuable securities is extremely high.
Specifically, the printed matter adopting the ink can still keep the average absorption rate of 750nm to 1250nm in a near infrared band to be more than 80% after being soaked by acid, alkali, ethanol, acetone, ethyl acetate and gasoline and subjected to a sun-proof test, and the lowest reflection rate of 400nm to 700nm in a visible light band is more than 80%.
Wherein, the binder comprises at least one of the following components: acrylic, phenolic, and cellulosic resins.
The solvent includes at least one of: esters, ketones, and alcohols, wherein esters include: ethyl acetate, butyl acetate, and the like, ketones include: butanone, and the like, alcohols include: ethanol, isopropanol, and the like.
The anti-settling agent comprises: fumed silica.
In this embodiment, the binder includes at least one of acrylic, phenolic, and cellulosic resins; the solvent comprises at least one of esters, ketones and alcohols; the anti-settling agent comprises fumed silica, and further utilizes the light color or light transmittance of the materials to avoid the color difference of the ink, so that the preparation of different colors of the ink is more convenient, and the adherence, the flowability and the dispersibility of the raw materials of the ink can be better ensured.
Specifically, the binder, the solvent, and the anti-settling agent may be in any combination.
Example 10:
in addition to any one of embodiments 1 to 9, further, the ink may be a gravure ink, an offset ink, a silk screen printing ink, a flexographic printing ink, or an inkjet ink.
Specifically, the ink may be a colored ink or a colorless ink for invisible under visible light, infrared reflective imaging authentication.
And the ink can be used with ink without near infrared absorption materials, so that the infrared pairing anti-counterfeiting effect is achieved.
In specific examples, as shown in table 1 below, the inks provided by one example of the present invention were tested for various degrees of resistance and compared for the reflectance change rate of light in the 850nm band.
TABLE 1
As shown in table 1 above, the ink according to one embodiment of the present invention has a reflectance of 0.58 before the acid resistance test and a reflectance of 0.58 after the acid resistance test with respect to the reflectance of light in the 850nm band, and the reflectance change rate of 0.0%.
Before the alkali resistance test, the reflectance was 0.58, and after the alkali resistance test, the reflectance was 0.63, and the reflectance change rate was 8.6%.
The reflectance was 0.58 before the hot water resistance test at 80 degrees celsius, and the reflectance was 0.66 after the resistance test, and the reflectance change rate was 13.8%.
Before the ethanol resistance test, the reflectance was 0.58, and after the ethanol resistance test, the reflectance was 0.63, and the reflectance change rate was 8.6%.
The reflectance was 0.58 before the acetone resistance test, and the reflectance was 0.61 after the acetone resistance test, and the reflectance change rate was 5.2%.
The reflectance was 0.58 before the resistance test of ethyl acetate, and the reflectance was 0.63 after the resistance test, and the reflectance change rate was 8.6%.
The reflectance was 0.58 before the gasoline resistance test, and the reflectance was 0.61 after the gasoline resistance test, and the reflectance change rate was 5.2%.
Before the resistance test for long-term exposure, the reflectance was 0.58, and after the resistance test, the reflectance was 0.58 and the reflectance change rate was 0.0%.
The addition amount of the near-infrared absorption material in the ink is 0.1-10%, the macroscopic color difference value (delta E) of the ink in a visible light wave band of 380-700 nm is less than 2, and for the colors presented in different wave bands, the macroscopic color difference values of the colors in the whole wave band of 380-700 nm can reach less than 1.5, the individual colors are even less than 1, and the optimal condition is less than 0.5.
Example 11:
the ink provided by the invention is characterized in that the addition amount of the near-infrared absorption material is 0.1-10%, and the macroscopic chromatic aberration of the visible light waveband of the ink from 380nm to 700nm is not generated, but the near-infrared absorption material has obvious spectral absorption from 750nm to 1250 nm.
The printed matter prepared by the ink has good physical and chemical resistance, and after being soaked by acid, alkali and organic solvent or being exposed for a long time, the spectral absorption of the printed matter in a near infrared region of 750nm to 1250nm does not change obviously.
Wherein the ink may be a gravure ink, a letterpress ink, an offset ink, a screen printing ink, a flexographic printing ink or an inkjet ink.
The ink can be applied to the anti-counterfeiting identification field such as infrared reflection imaging.
The ink can be used independently or matched with other ink with any bright color, so that the application range of the ink color is widened.
The near infrared absorption material has a chemical composition general formula of MxWOyWherein M represents H, He, alkali metals such as Li, Na, K, Rb, Cs, alkaline earth metals such as Be, Mg, Ca,Sr and Ba, and one or more elements selected from rare earth elements Re. And x is more than or equal to 0.01 and less than or equal to 2 and y is more than or equal to 2 and less than or equal to 3.
M is selected from alkali metals such as Li, Na, K, Rb, Cs, or M is selected from Rb, Cs. And 0.2 ≦ x <1, and y ≦ 3.
The near-infrared absorbing material and the auxiliary material have a particle size of 1nm to 1000nm, further 1nm to 500nm, further 1nm to 120nm, further 1nm to 50 nm.
The average absorptivity of the near infrared absorption material in a near infrared band of 750nm to 1250nm is more than 80 percent, and the lowest reflectivity in a visible light band of 400nm to 700nm is more than 80 percent.
The near-infrared absorbing material can still keep the average absorption rate of 750nm to 1250nm of the near-infrared band to be more than 80 percent after being soaked by acid, alkali, ethanol, acetone, ethyl acetate and gasoline and subjected to a sun-proof test, and the lowest reflectivity of 400nm to 700nm of the visible band is more than 80 percent. Thereby enabling the inks to have the same resistance.
The printed matter made of the ink can still keep the spectral absorption of the ink imprint in the near infrared region from 750nm to 1250nm without obvious change after being soaked by acid, alkali, ethanol, acetone, ethyl acetate and gasoline and exposed to the sun for a long time.
After the ink is soaked in acid, alkali, ethanol, acetone, ethyl acetate and gasoline and subjected to sun-proof test, the ink can still be kept in different wave bands of a near-infrared region spectrum from 750nm to 1250nm, the integral reflectivity change rate is not more than 15%, and under individual tolerance conditions, namely individual test environments, the spectral reflectivity change rate is not more than 10%, even the spectral reflectivity change rate is not more than 5%.
The addition amount of the near-infrared absorption material in the ink is 0.1-10%, the macroscopic color difference value (delta E) of the visible light wave band 380-700 nm of the ink is less than 2, the macroscopic color difference value of the whole color within the wave band 380-700 nm can reach less than 1.5, the macroscopic color difference value of individual color is less than 1, and even the macroscopic color difference value is less than 0.5.
In the gravure ink, the weight percentage of the near-infrared absorption material is more than or equal to 2 percent and less than or equal to 10 percent; the weight percentage of the organic pigment is more than or equal to 0 percent and less than or equal to 15 percent; the weight percentage of the connecting material is more than or equal to 40 percent and less than or equal to 60 percent; the weight percentage of the filler is more than or equal to 10 percent and less than or equal to 35 percent; the weight percentage of the auxiliary agent is more than or equal to 1 percent and less than or equal to 5 percent.
The binder comprises at least one of the following: alkyd resins, phenolic resins, urea-formaldehyde resins, gum oils, and polymerized fats, among others.
The filler includes at least one of: calcium carbonate, silica, bentonite, and the like.
The auxiliary agent comprises at least one of the following components: paraffin, mineral oil, high boiling point solvent, drying agent and the like.
In the offset printing ink, the weight percentage of the near infrared absorption material is more than or equal to 0.5 percent and less than or equal to 10 percent; the weight percentage of the organic pigment is more than or equal to 0 percent and less than or equal to 15 percent; the weight percentage of the connecting material is more than or equal to 50 percent and less than or equal to 65 percent; the weight percentage of the filler is more than or equal to 5 percent and less than or equal to 20 percent; the weight percentage of the auxiliary agent is more than or equal to 1 percent and less than or equal to 5 percent.
Wherein, the binder comprises at least one of the following components: alkyd resins, phenolic resins, urea-formaldehyde resins, gum oils, and polymerized fats, among others.
The filler includes at least one of: calcium carbonate, silica, bentonite, and the like.
The auxiliary agent comprises at least one of the following components: paraffin, mineral oil, high boiling point solvent, drying agent and the like.
In the silk-screen printing ink or the flexographic printing ink, the weight percentage of the near-infrared absorption material is more than or equal to 2 percent and less than or equal to 10 percent; the weight percentage of the organic pigment is more than or equal to 0 percent and less than or equal to 30 percent; the weight percentage of the connecting material is more than or equal to 20 percent and less than or equal to 40 percent; the weight percentage of the solvent is more than or equal to 25 percent and less than or equal to 50 percent; the weight percentage of the anti-precipitation agent is more than or equal to 0.5 percent and less than or equal to 3.5 percent.
Wherein, the binder comprises at least one of the following components: acrylic, phenolic, and cellulosic resins.
The solvent includes at least one of: esters, ketones, and alcohols, wherein esters include: ethyl acetate, butyl acetate, and the like, ketones include: butanone, and the like, alcohols include: ethanol, isopropanol, and the like.
The anti-settling agent comprises: fumed silica.
In the ink-jet ink, the weight percentage of the near-infrared absorption material is more than or equal to 1 percent and less than or equal to 10 percent; the weight percentage of the connecting material is more than or equal to 15 percent and less than or equal to 25 percent; the weight percentage of the solvent is more than or equal to 65 percent and less than or equal to 80 percent; the weight percentage of the anti-precipitation agent is more than or equal to 0.5 percent and less than or equal to 3.5 percent.
Wherein, the binder comprises at least one of the following components: acrylic, phenolic, and cellulosic resins.
The solvent includes at least one of: esters, ketones, and alcohols, wherein esters include: ethyl acetate, butyl acetate, and the like, ketones include: butanone, and the like, alcohols include: ethanol, isopropanol, and the like.
The anti-settling agent comprises: fumed silica.
The ink may be a colored ink or a colorless ink for invisible under visible light, infrared reflective imaging authentication.
Can be used with ink without near infrared absorption material, and can achieve infrared matching anti-counterfeiting effect.
The ink provided by the invention has the advantages that the addition amount of the near-infrared absorption material is 0.1-10% lower, the macroscopic chromatic aberration of the visible light wave band of the ink from 380nm to 700nm is not generated, and the near-infrared absorption material has obvious spectral absorption in the near-infrared region from 750nm to 1250 nm.
The invention overcomes the defects that in the related technology, the near infrared absorption material has darker color and insufficient suitability for ink color, namely, light-tone ink such as orange, pink and the like is difficult to prepare.
Meanwhile, the invention also overcomes the defect of poor resistance of the near infrared absorption material in the related technology. The addition amount of the near-infrared absorbing material in the ink is 0.1-10%, the macroscopic chromatic aberration of the visible light wave band of the ink from 380nm to 700nm is not generated, but the near-infrared absorbing material has obvious spectral absorption from 750nm to 1250nm, and the printed product prepared has good physicochemical resistance, and after being soaked by acid, alkali and organic solvent or exposed to the sun for a long time, the spectral absorption of the printed product from 750nm to 1250nm in the near-infrared region does not change obviously, so that the method has important value for anti-counterfeiting application of high-added-value products such as valuable securities and the like.
The ink provided by the invention can be gravure ink, letterpress ink, offset ink, silk screen printing ink, flexo printing ink or ink-jet ink. Can be used independently or matched with other printing ink with any bright color, thereby widening the application range of the printing ink color.
Specifically, as shown in FIG. 3, one embodiment of the present invention provides a comparison graph of red ink containing 5% by weight of near infrared absorbing material with different light reflectances before and after the addition of the near infrared absorbing material.
Namely, the near infrared absorbing material added in the invention has little influence on the color of the ink. Specifically, the color difference was 1.06 for a red ink near-infrared material addition of 5%.
Hereinafter, the related art in which the near infrared absorbing material in the above embodiment is replaced with carbon powder.
As shown in fig. 2, in the related art, the red ink containing 0.15 wt% of carbon powder is a comparative graph of different light reflectances before and after the near-infrared absorbing material is added.
In the related art, the color difference of the ink using carbon powder is as high as 5.25 before and after the ink is added.
As shown in FIG. 4, one embodiment of the present invention provides a comparison graph of orange ink containing 5% by weight of a near infrared absorbing material before and after addition of the near infrared absorbing material for different light reflectances.
Namely, the near infrared absorbing material added in the invention has little influence on the color of the ink. Specifically, the additive amount of the orange ink near-infrared material is 5%, and the color difference is 1.39.
As shown in FIG. 5, one embodiment of the present invention provides a comparison of the reflectance of yellow ink containing 5% by weight of near infrared absorbing material before and after the addition of the near infrared absorbing material.
Namely, the near infrared absorbing material added in the invention has little influence on the color of the ink. Specifically, the near-infrared material addition amount for the yellow ink was 5%, and the color difference was 1.52.
As shown in fig. 1, in the related art, a comparison graph of different light reflectances before and after the addition of the near-infrared absorbing material is obtained for yellow ink containing 0.15% by weight of carbon powder.
In the related art, ink of carbon powder is used, and the color difference is as high as 5.69 before and after the ink is added.
As the near-infrared absorbing material adopts the compound comprising tungstate radical and one or more of alkali metal, alkaline earth metal, hydrogen, helium and rhenium, the ink provided by the invention greatly reduces the influence of the near-infrared absorbing material on the color of the ink, and can obtain the ink with more standard and more gorgeous color.
Example 12:
according to a second aspect of the present invention, there is provided a printed product comprising: a carrier having printed thereon an ink as provided in any one of the embodiments above.
The printed matter provided by the invention comprises the ink provided by any one of the above embodiments, so that the ink provided by any one of the above embodiments is not presented herein.
In particular, the printed product is in particular a book, a security or a packaging or the like.
In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.