CN103242700A - Ultraviolet excited blue fluorescent inkjet ink for printing and imaging by additive method and preparation method - Google Patents

Abstract

The invention relates to an ultraviolet-excited blue fluorescent inkjet ink for additive color printing and imaging and a preparation method, belonging to the technical field of anti-counterfeiting printing. The composition and weight ratio of the ink are: 0.1-10 parts of ultraviolet excited blue fluorescent anti-counterfeiting material, 30-60 parts of ester solvent, 5-25 parts of synthetic resin, 15-40 parts of ether solvent, 10-30 parts of alcohol solvent 0.5-3 parts of surfactant, 0.5-3 parts of pH regulator, 0.5-3 parts of leveling agent. The preparation process of the ink of the present invention is simple, and only needs magnetic stirring and heat treatment to completely dissolve and mix the components uniformly. The blue fluorescent anti-counterfeiting inkjet ink of the present invention is suitable for printing invisible one-dimensional barcodes and two-dimensional barcodes on various securities, bills, trademarks and the like. The process is simple in operation, strong in concealment, and can effectively prevent copying and counterfeiting .

Description

Ultraviolet-excited blue fluorescent inkjet ink for color additive printing and imaging and its preparation method

technical field

The invention relates to an ultraviolet-excited blue fluorescent ink-jet ink for color-additive printing and imaging and a preparation method. The ink is a printing ink-jet ink and belongs to the technical field of anti-counterfeiting printing.

Background technique

With the improvement of living standards and environmental protection awareness, people have put forward higher requirements for anti-counterfeiting of packaging and printing products. At present, there are a variety of counterfeit products in the market, flooding every corner of the market, which has seriously harmed the interests of producers and consumers. People began to pay more attention to the application of anti-counterfeiting technology in printed matter, not only expecting it to achieve the expected anti-counterfeiting effect, but also to meet high-quality printing performance, simple operation, and high anti-counterfeiting performance. This is a topic that many manufacturers and consumers pay more attention to.

Most of the traditional anti-counterfeiting inks use printing processes such as offset printing and screen printing. The process is complicated and cannot meet the needs of modern life.

Contents of the invention

The invention provides an environmentally friendly ultraviolet-excited blue fluorescent ink-jet ink for color additive printing and imaging and a preparation method thereof. The printing method of this fluorescent inkjet ink is inkjet printing, which is simple and feasible, and has excellent anti-counterfeiting performance, simple operation, low cost, good concealment, bright colors, and convenient inspection. It is a weak solvent type environmental protection ink.

In order to achieve the above object, the present invention takes the following technical solutions:

An ultraviolet-excited blue fluorescent inkjet ink, which is used for additive color printing and imaging, is prepared by mixing ultraviolet-excited blue fluorescent anti-counterfeiting materials (ultraviolet-absorbing blue fluorescent anti-counterfeiting materials), synthetic resins, solvents, and additives, including The following composition and weight ratio:

Ultraviolet excited blue fluorescent anti-counterfeiting material: 0.1-10 copies

Synthetic resin: 5-25 parts

Ester solvent: 30-60 parts

Ether solvent: 15-40 parts

Alcohol solvent: 10-30 parts

Surfactant: 0.5-3 parts

pH adjuster: 0.5-3 parts

Leveling agent: 0.5-3 parts.

The ultraviolet-excited blue fluorescent anti-counterfeiting material in the present invention is an ultraviolet-absorbing material with an excitation (absorption) wavelength of 365-450nm, and emits blue light with a wavelength range of 400-500nm. After being put on the object, it is colorless visually, and it shows color after being irradiated by ultraviolet light. It has strong concealment and can effectively prevent copying and counterfeiting.

The ultraviolet-excited blue fluorescent anti-counterfeiting material is a heterocyclic organic compound named 2-[5-bromo-(2-p-toluenesulfonylamino)phenyl]-6-bromo-4-(3H)-quinone Azolinone, the structure is as follows:

It has high aging resistance and strong fluorescence quantum yield.

The synthetic resin is one or a mixture of two or more of acrylic resin, epoxy resin, polyurethane resin, vinyl resin and phenolic resin.

The ester solvent is one or a mixture of two or more of ethyl acetate, butyl, propylene glycol methyl ether acetate, propyl acetate, propylene glycol methyl ether propionate and butyl acetate.

The ether solvent is one or a mixture of two or more of propylene glycol methyl ether, ethylene glycol ethyl ether, diethylene glycol butyl ether and 1,4-dioxane.

The alcohol solvent is one or a mixture of ethanol, benzyl alcohol, ethylene glycol, diethylene glycol, isopropanol, n-butanol and glycerol.

The surfactant is one or a mixture of two or more of silicone surfactants and organic fluorine surfactants.

The pH regulator is one or a mixture of two or more of N,N-dimethylformamide, triethanolamine and triethylamine.

-SPECIAL、

-OK、

Flow ATF-2和TEGO Glide 450中的一种或两种以上的混合物。The leveling agent is

-SPECIAL,

-OK,

One or a mixture of two or more of Flow ATF-2 and TEGO Glide 450.

The preparation method of above-mentioned ultraviolet excitation blue fluorescent inkjet ink, comprises the following steps:

(1) Mix the ultraviolet-excited blue fluorescent anti-counterfeiting material and the ester solvent evenly according to the stated ratio, heat and stir at 35-55°C to obtain component A;

(2) Mix the synthetic resin and the ether solvent according to the stated ratio, and stir evenly to obtain component B;

(3) Mix the components A and B, stir until the solution is completely transparent, then add alcohol solvents, surfactants, pH regulators and leveling agents, and mix and stir evenly to obtain the ink, namely Can be printed on the substrate.

In step (1), the heating and stirring time of the component A is 20-40 minutes.

In step (2), the stirring time of the B component is 20-40 minutes.

In step (3), the A component and the B component are mixed, and the stirring time is 30-60 min; the surfactant and the pH regulator are added, and the mixing and stirring time is 30-45 min.

The performance of the environment-friendly UV-excited blue fluorescent inkjet ink: pH is 7.20-9.53, surface tension is 25.02-33.58mN/m, viscosity is 2.33-4.07mPa·S, ink fluorescence intensity is 478.544-609.732cd, and can be printed to white On various substrates such as cardboard, coated paper, offset paper, aluminum foil paper, photo paper, rice paper, etc., the effect is very good, and the light fastness is high.

The preparation process of the ink of the present invention is simple, and it can be completely dissolved only through magnetic stirring and heat treatment, so that the components can be mixed uniformly.

The ultraviolet-absorbing blue fluorescent anti-counterfeiting inkjet ink of the present invention is prepared and processed from commercially available ultraviolet-absorbing blue fluorescent materials, synthetic resins, solvents, auxiliary agents and the like. The blue fluorescent anti-counterfeiting inkjet ink of the present invention is suitable for printing invisible one-dimensional barcodes and two-dimensional barcodes on various securities, bills, trademarks and the like. The process is simple in operation, strong in concealment, and can effectively prevent copying and counterfeiting .

Description of drawings

Fig. 1 is the printing pattern of blue fluorescent inkjet ink of the present invention.

Figure 2 is the printing pattern of imported blue fluorescent inkjet ink.

Detailed ways

Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, various changes or modifications made by those skilled in the art to the present invention, and these equivalent forms also fall within the scope of protection claimed by the present application. The proportions in the embodiments of the present invention are all by weight.

Example 1

-SPECIAL，混合搅拌45min，得到该油墨，即可喷绘在承印物上。Add 0.5 parts of ultraviolet-excited blue fluorescent anti-counterfeiting material (hereinafter referred to as blue fluorescent material) to 34.5 parts of ethyl acetate (analytical pure): butyl ester (analytical pure) mixed ester solvent with a weight ratio of 1:3 , heated with magnetic stirring (25min), and the temperature was 55°C to form component A; add 31 parts of ethylene glycol ethyl ether (analytical pure) to 15 parts of acrylic resin AZ5391 (commercially available): 1,4-dioxane (Analytical pure) 2:1 (weight ratio) mixed ether solvent, magnetically stirred evenly (30min), to form B component, A, B components mixed and stirred for 30min until the solution is completely transparent, add 16 parts of ethanol (analytical Pure): Glycerol (analytical pure) is 3:1, 1 part silicone surfactant (TEGO), 1 part pH regulator triethylamine (analytical pure) and 1 part leveling agent

-SPECIAL, mix and stir for 45 minutes to get the ink, which can be printed on the substrate.

The blue fluorescent material used is named 2-[5-bromo-(2-p-toluenesulfonylamino)phenyl]-6-bromo-4-(3H)-quinazolinone with the following structure:

The excitation wavelength of the blue fluorescent material is 365nm-450nm, and the emission wavelength is 400nm-500nm. In the following embodiments, this kind of phosphor is used as the blue fluorescent material.

Example 2

Add 3 parts of blue fluorescent material to 45 parts of propylene glycol methyl ether acetate (analytical pure): butyl ester (analytical pure) mixed ester solvent with a weight ratio of 5:4, heat and magnetically stir for 30 minutes to make it uniform, and the temperature is 45°C to form component A; add 25 parts of propylene glycol methyl ether to 10 parts of vinyl acetate resin (commercially available): acrylic resin 831 (commercially available) at a ratio of 3:2 (weight ratio), and stir magnetically for 35 minutes to make it uniform , to form component B, mix and stir components A and B for 50 minutes until the solution is completely transparent, add 15 parts of ethanol (analytical pure), 0.5 parts of silicone surfactant (TEGO), 1 part of pH regulator triethanolamine (analytical pure) Mix and stir with 2 parts of leveling agent TEGO Glide450 for 30 minutes to get the ink, which can be printed on the substrate.

Example 3

-OK，为混合搅拌40min，得到该油墨，即可喷绘在承印物上。Add 5.5 parts of blue fluorescent material to 37.5 parts of propylene glycol methyl ether acetate (analytical pure): butyl ester (analytical pure) in a mixed ester solvent of 5:4 (weight ratio), heat and magnetically stir for 35 minutes to be uniform, and the temperature is 35°C to form component A; add 27 parts of propylene glycol methyl ether (analytical pure) to 12 parts of vinyl acetate resin (commercially available): acrylic resin 831 (commercially available) in a mixed resin of 3:2 (weight ratio), magnetic After stirring for 35 minutes evenly, component B is formed, components A and B are mixed and stirred for 45 minutes until the solution is completely transparent, and 18 parts of benzyl alcohol (analytically pure): ethylene glycol (analytical pure) is 3:5 (weight ratio), 2 1 part of organic fluorine surfactant (TEGO), 1.5 parts of pH regulator N,N-dimethylformamide (analytical pure) and 1 part of leveling agent

-OK, for mixing and stirring for 40 minutes to obtain the ink, which can be spray-painted on the substrate.

Example 4

Flow ATF-2，混合搅拌35min，得到该油墨，即可喷绘在承印物上。Add 8 parts of blue fluorescent material to 55 parts of propylene glycol methyl ether propionate (analytical pure): propyl acetate (analytical pure) mixed ester solvent with a ratio of 1:1 (by weight), heat and magnetically stir for 40 minutes to evenly , the temperature is 40°C to form component A; add 10 parts of propylene glycol methyl ether to 20 parts of epoxy resin (commercially available): acrylic resin AZ5361 (commercially available) at a ratio of 1:3 (weight ratio), and magnetically stir After 30 minutes of homogenization, component B is formed, components A and B are mixed and stirred for 50 minutes until the solution is completely transparent, and 10.5 parts of ethanol (analytical pure): isopropanol (analytical pure) is a mixed alcohol of 1:1 (weight ratio) Solvent, 0.5 part of organic fluorine surfactant (TEGO), 0.5 part of pH regulator triethanolamine (analytical grade) and 0.5 part of leveling agent

Flow ATF-2, mix and stir for 35 minutes to get the ink, which can be printed on the substrate.

Example 5

Flow ATF-2，混合搅拌30min，得到该油墨，即可喷绘在承印物上。Add 0.1 part of blue fluorescent material to 30 parts of ethyl acetate: propylene glycol methyl ether propionate mixed ester solvent with a ratio of 2:1 (weight ratio), heat and magnetically stir for 40 minutes to form A Components: Add 15 parts of diethylene glycol butyl ether to 20 parts of epoxy resin (commercially available), stir magnetically for 20 minutes to form component B, mix and stir components A and B for 60 minutes until the solution is completely transparent, add 10 Part of ethanol (analytical pure), 0.5 part of organic fluorine surfactant (TEGO), 0.5 part of pH regulator triethanolamine (analytical pure) and 0.5 part of leveling agent

Flow ATF-2, mix and stir for 30 minutes to get the ink, which can be printed on the substrate.

Example 6

-OK，为混合搅拌45min，得到该油墨，即可喷绘在承印物上。Add 10 parts of blue fluorescent material to 60 parts of propylene glycol methyl ether acetate (analytical pure), heat and magnetically stir for 40 minutes, and the temperature is 35 ° C to form A component; add 40 parts of propylene glycol methyl ether (analytical pure), magnetically stirred for 40 minutes to form component B, A and B components were mixed and stirred for 60 minutes until the solution was completely transparent, then added 30 parts of benzyl alcohol (analytical pure), 3 parts of organic fluorine surfactant agent (TEGO), 3 parts of pH regulator N,N-dimethylformamide (analytically pure) and 3 parts of leveling agent

-OK, after mixing and stirring for 45 minutes, the ink is obtained, which can be spray-painted on the substrate.

The properties of the ink obtained in Examples 1-6 are shown in Table 1. The properties of the ultraviolet-excited blue fluorescent ink-jet ink prepared by the invention are as follows: the pH is 7.20-9.53, the surface tension is 25.02-33.58mN/m, the viscosity is 2.33-4.07mP·S, and the fluorescence intensity of the ink is 478.544-609.732cd. Table 2 is the performance comparison of the ink of the present invention and the imported ink.

The performance of table 1 embodiment 1-6 gained printing ink

Ink performance pH Surface Tension Viscosity Conductivity The fluorescence intensity Example 1 7.20 25.02 2.33 0 577.328 Example 2 7.48 26.74 3.29 0 523.791 Example 3 8.39 28.69 3.65 0 546.973 Example 4 9.14 29.19 3.97 0 503.273

Example 5 9.53 30.57 4.07 0 518.544 Example 6 478.544 33.58 4.07 0 478.544

The performance contrast of table 2 ink of the present invention and imported ink

After printing the ink of the present invention and the imported ink at the same time, the printing pattern of the blue fluorescent inkjet ink of the present invention and the imported blue fluorescent inkjet ink (Imash 5553) can be obtained, as shown in Figure 1 and Figure 2 respectively. By contrast, it can be seen that the blue ink of the present invention has high brightness, bright colors and good effect, while the Japanese blue fluorescent inkjet ink has low brightness and not bright colors.

In other embodiments of the present invention, each component of the ink can use the specific components listed in the Summary of the Invention that are different from Examples 1-6, and carry out different collocations and combinations, all of which can obtain the performance of the ink of the present invention and apply effects. The ultraviolet-excited blue fluorescent inkjet ink prepared by the present invention can be spray-painted on various substrates such as white cardboard, coated paper, offset paper, aluminum foil paper, photo paper, rice paper, etc., and is colorless or close to Colorless, under the irradiation of a specific ultraviolet light source, it shows a bright blue color, the effect is obvious, and it can play a very good anti-counterfeiting effect.

Claims (10)

1. one kind is used for the burst of ultraviolel blue-fluorescence jetted ink that additive color process is printed as picture, and it comprises following composition and weight proportion:

Burst of ultraviolel blue-fluorescence anti-fake material: 0.1-10 part

Synthetic resins: 5-25 part

Esters solvent: 30-60 part

Ether solvent: 15-40 part

Alcoholic solvent: 10-30 part

Tensio-active agent: 0.5-3 part

PH regulator agent: 0.5-3 part

Flow agent: 0.5-3 part.

2. according to claim 1ly be printed as the burst of ultraviolel blue-fluorescence jetted ink of picture for additive color process, it is characterized in that: the excitation wavelength of described burst of ultraviolel blue-fluorescence anti-fake material is 365 ~ 450nm, and emission wavelength is 400 ~ 500nm.

3. according to claim 1ly be printed as the burst of ultraviolel blue-fluorescence jetted ink of picture for additive color process, it is characterized in that: described synthetic resins is one or more in acrylic resin, Resins, epoxy, urethane resin, vinyl chloride-vinyl acetate resin and the resol.

4. according to claim 1ly be printed as the burst of ultraviolel blue-fluorescence jetted ink of picture for additive color process, it is characterized in that: described esters solvent is one or more in ethyl acetate, butyl ester, 1-Methoxy-2-propyl acetate, propyl acetate, propylene glycol monomethyl ether acetate and the butylacetate; Described ether solvent is one or more in propylene glycol monomethyl ether, ethylene glycol ethyl ether, Diethylene Glycol butyl ether and 1, the 4-dioxane.

5. the burst of ultraviolel blue-fluorescence jetted ink that is printed as picture for additive color process according to claim 1, it is characterized in that: described alcoholic solvent is ethanol, phenylcarbinol, ethylene glycol, Diethylene Glycol, one or more in Virahol, propyl carbinol and the glycerol.

6. according to claim 1ly be printed as the burst of ultraviolel blue-fluorescence jetted ink of picture for additive color process, it is characterized in that: described tensio-active agent is one or more in organic silicon surfactant, the organic fluorine tensio-active agent.

7. according to claim 1ly be printed as the burst of ultraviolel blue-fluorescence jetted ink of picture for additive color process, it is characterized in that: described pH regulator agent is N, one or more in dinethylformamide, trolamine and the triethylamine.

8. according to claim 1ly be printed as the burst of ultraviolel blue-fluorescence jetted ink of picture for additive color process, it is characterized in that: described flow agent is one or more among BYKETOL-SPECIAL, BYKETOL-OK, TEGO Flow ATF-2 and the TEGO Glide 450.

9. each describedly is printed as the preparation method of the burst of ultraviolel blue-fluorescence jetted ink of picture for additive color process among the claim 1-8, comprises the steps:

(1) burst of ultraviolel blue-fluorescence anti-fake material and esters solvent are mixed according to described proportioning, heated and stirred, temperature is 35 ~ 55 ℃, obtains the A component;

(2) synthetic resins is mixed according to described proportioning with ether solvent, stir, obtain the B component;

(3) described A component and B component are mixed, it is transparent fully to be stirred to solution, adds alcoholic solvent, tensio-active agent, pH regulator agent and flow agent then, and remix stirs.

10. according to claim 9ly be printed as the preparation method of the burst of ultraviolel blue-fluorescence jetted ink of picture for additive color process, it is characterized in that: the heated and stirred time of described A component is 20 ~ 40min; The churning time of described B component is 20 ~ 40min; Described A component and B component are mixed, and churning time is 30 ~ 60mim; Add tensio-active agent, pH regulator agent, the time that remix stirs is 30 ~ 45min.