Hair color-changing ink and air color-changing label

Abstract

The invention discloses a halitochromism ink and a halitochromism label, and the halitochromism ink is prepared from the following raw materials by mass: 20-40 parts of a binder; 30 to 50 parts of a solvent; and 1-5 parts of an off-color material, wherein the off-color material can be subjected to an off-color reaction with specific components in the halitus of the human body. The harsh gas color-changing ink comprises the color-changing component, the color-changing component has the initial color before harsh gas, and after harsh gas, the color-changing component can be subjected to color-changing reaction with specific components in harsh gas of a human body, so that the authenticity of a product can be verified through harsh gas color changing, and the harsh gas color-changing ink has a good anti-counterfeiting effect; therefore, the problem of inconvenience caused by finding liquid water in traditional humidity-sensitive anti-counterfeiting is solved. The halitochromism label comprises a substrate layer and an indication layer which are arranged in a stacked mode, and the indication layer is obtained by printing and drying halitochromism ink.

Description

Technical Field

[0001] The invention relates to the technical field of inks, and in particular to a breath color-changing ink and a breath color-changing label. Background Art

[0002] The anti-counterfeiting principle of the existing moisture-sensitive anti-counterfeiting label is: a covering layer is set above the image layer, and the covering layer has a microporous structure. The microporous structure makes the incident light diffusely reflected, thereby generating a covering effect. When the user applies liquid water on the covering layer, the liquid water can fill the microporous structure. At this time, the covering layer is transparent, so that the image layer is visible. However, there is a problem with this type of anti-counterfeiting label: when verifying the authenticity, liquid water must be obtained first, which brings inconvenience to the user. Summary of the invention

[0003] Based on this, it is necessary to provide a breath color-changing ink and a breath color-changing label to solve the above problems.

[0004] A breath color-changing ink, measured by mass, the raw materials for preparing the breath color-changing ink include the following components:

[0005] 20 to 40 parts of connecting material;

[0006] 30 to 50 parts of solvent; and

[0007] 1 to 5 parts of color-changing material;

[0008] The color-changing material can react with specific components in human breath to change color.

[0009] In one embodiment, the color-changing material can undergo a color-changing reaction with water vapor in human breath.

[0010] In one embodiment, the color-changing material is nickel iodide.

[0011] In one embodiment, the nickel iodide is obtained by wet chemical treatment.

[0012] In one embodiment, the nickel iodide is subjected to an organic hybrid modification treatment with tetramethylnickel.

[0013] In one embodiment, the color-changing material can undergo a color-changing reaction with ammonia in human breath.

[0014] In one embodiment, the color-changing material is nickel chloride.

[0015] In one embodiment, the particle size of the color-changing material is 5nm-500nm.

[0016] The above-mentioned breath color-changing ink includes a color-changing component. The color-changing component has an initial color before breathing. After breathing, the color-changing component can undergo a color-changing reaction with specific components in human breath. Therefore, the authenticity of the product can be verified by the breath color change, and it has a good anti-counterfeiting effect, thereby solving the problem of the inconvenience of finding liquid water in traditional moisture-sensitive anti-counterfeiting.

[0017] A breath color changing label comprises a base layer and an indicator layer which are stacked together, wherein the indicator layer is printed by any one of the breath color changing inks described above.

[0018] In one embodiment, a protective layer is disposed above the indicating layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a breath color changing label according to one embodiment;

[0020] Figure 2 This is a schematic diagram of the structure of a breath color-changing label according to another embodiment. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected" or "communicated" with another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "upper", "lower", "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0023] The breath color changing ink and breath color changing label are further described in detail below mainly in combination with the drawings and specific embodiments.

[0024] The breath color-changing ink according to one embodiment includes 20 to 40 parts of a connecting material, 30 to 50 parts of a solvent, and 1 to 5 parts of a color-changing material.

[0025] The binder, calculated by weight, has a weight portion of 20 to 40 parts. The binder can be dissolved in a solvent and is used to allow the breath color-changing ink to dry into a film after printing.

[0026] Optionally, the connecting material is selected from at least one of acrylic resin, polyurethane epoxy resin, polyketone resin, polyamide resin, linseed oil, rosin-modified phenolic resin, alkyd resin and polyurethane alkyd resin.

[0027] The solvent, calculated by weight, is in the range of 30 to 50 parts by weight and is used to dissolve the linker so that the ink meets the requirements for printability.

[0028] Optionally, the solvent is selected from at least one of aliphatic solvents, aromatic solvents, cycloalkane solvents, alcohol solvents, ester solvents, ketone solvents or water.

[0029] It should be understood that when some offset inks, screen printing inks, flexographic inks or gravure inks contain the above-mentioned proportions of the binder and the solvent, they can be directly used as components of the binder and the solvent of the present invention.

[0030] The color-changing material, calculated by mass, has a mass fraction of 1 to 5 parts. The color-changing material can undergo a color-changing reaction with specific components in human breath. The color-changing material presents a first color before the color-changing reaction and a second color after the color-changing reaction, and acts as a pigment in the breath color-changing ink.

[0031] In this embodiment, the color-changing material is sensitive to water vapor in human breath and can undergo a color-changing reaction with the water vapor in human breath.

[0032] Specifically, the color-changing material is nickel iodide (NiI2) powder. Nickel iodide powder is black in a dry state. When nickel iodide absorbs water vapor, it generates nickel iodide hexahydrate (NiI2·6H2O). In this process, its crystal structure and electronic structure change, resulting in changes in its spectral characteristics, from black to blue-green, and the color change is reversible.

[0033] Preferably, nickel iodide is obtained by wet chemical treatment. Compared with nickel iodide powder obtained by other methods, the nickel iodide powder obtained by this method has a larger surface energy, which makes it exhibit excellent moisture-sensitive color change characteristics in ultra-low humidity environments. Experiments show that nickel iodide obtained by wet chemical treatment exhibits excellent color change sensitivity even in ultra-low humidity of 0.5% RH to 10% RH. Under the medium humidity conditions generated by breath, nickel iodide can complete the color change reaction in an instant, and the reaction sensitivity is extremely high. Nickel iodide obtained by wet chemical treatment can be dehydrated to restore the original color under heating conditions, thereby having a secondary breath color change effect.

[0034] Preferably, nickel iodide is treated with tetramethyl nickel organic hybrid modification. After the tetramethyl nickel organic hybrid modification, the nickel iodide maintains the hydrophilicity of the nickel iodide powder surface while producing good hydrophobicity inside. On the one hand, its surface hydrophilicity enables the color-changing material to react sensitively with water vapor, and the color-changing reaction is highly real-time. On the other hand, its good internal hydrophobicity enables the color-changing material to achieve rapid self-dehydration in a short time under natural conditions without heating after the color-changing reaction occurs, thereby restoring the original color, and then having a secondary breath color-changing effect, further enhancing the user experience. Experiments show that in a breath environment, the color-changing reaction time of the color-changing material is less than 2 seconds. After stopping the breath, the color-changing material can self-dehydrate and restore the original color within 15 seconds, thereby creating conditions for a secondary color-changing reaction.

[0035] In another embodiment, the color-changing material is sensitive to ammonia and can undergo a color-changing reaction with the ammonia component in human breath.

[0036] Specifically, the color-changing material is nickel chloride (NiCl2) powder. Nickel chloride has an initial green color. In a humid environment, it can produce a sensitive complex color change reaction with ammonia to generate blue hexaammine nickel chloride. Hexaammine nickel chloride has high chemical stability at room temperature. Coincidentally, there is a large amount of water vapor and a small amount of ammonia in the breath of healthy adults, which can just undergo a complex color change reaction with nickel chloride. The reaction equation is as follows:

[0037] NiCl2+6NH3→(Ni(NH3)6)Cl2

[0038] Experiments show that in the breath environment of a healthy adult, the color-changing material can show a more obvious color-changing reaction in about 10 seconds.

[0039] Surprisingly, the ammonia content in breath is related to the metabolic state of the human body. For example, patients with certain diseases, such as kidney disease, have significantly higher ammonia content in their breath than normal people. In their breath environment, the color-changing material can change color in 6 seconds. Therefore, this type of breath color-changing ink can be used for early warning of certain diseases.

[0040] Preferably, the particle size of the color-changing material particles is 5nm-500nm, so that the breath color-changing ink has good printability.

[0041] In another embodiment, the breath color-changing ink further includes 0.5 to 1 part of a defoaming agent, and the defoaming agent is used to prevent bubbles from being generated in the ink.

[0042] Optionally, the defoaming agent includes, but is not limited to: a polyether block defoaming agent, a silicone defoaming agent and a composite defoaming agent.

[0043] In another embodiment, the breath color-changing ink further includes 0.5 to 1 part of a leveling agent, and the leveling agent can keep the breath color-changing ink in a flat state during the printing process.

[0044] Optionally, the leveling agent includes, but is not limited to: polydimethylsiloxane, fluorinated siloxane, silicone oil, polyether polyester modified organic siloxane, alkyl modified organic siloxane and acrylate.

[0045] The above-mentioned breath color-changing ink includes a color-changing material. The color-changing material has an initial color before breathing. After breathing, the color-changing material can undergo a color-changing reaction with specific components in human breath. Therefore, the authenticity of the product can be verified by the breath color change, and it has a good anti-counterfeiting effect, thereby solving the problem of the inconvenience of finding liquid water in traditional moisture-sensitive anti-counterfeiting.

[0046] See also Figure 1 A breath color changing label according to one embodiment includes a base layer 10 and an indicator layer 20 which are stacked.

[0047] The base layer 10 is used to carry the indicating layer 20. Optionally, the material of the base layer 10 includes but is not limited to: paper, PVC film, PET film, PP film.

[0048] The indicator layer 20 is stacked on the base layer 10 and is obtained by printing any one of the above-mentioned breath color-changing inks.

[0049] In another embodiment, see Figure 2 The breath color changing label further includes a protective layer 30 , which is stacked on a side of the indicator layer 20 away from the base layer 10 , and the protective layer 30 protects the indicator layer 20 .

[0050] The above-mentioned breath color-changing label, the indicator layer 20 is printed by breath color-changing ink, the breath color-changing ink contains a color-changing material, the color-changing material has an initial color before breathing, after breathing, the color-changing material can react with specific components in human breath to change color. Therefore, the authenticity of the product can be verified by the breath color change, which has a good anti-counterfeiting effect, thereby solving the problem of the inconvenience of finding liquid water in traditional moisture-sensitive anti-counterfeiting.

[0051] The following are specific embodiments.

[0052] Example 1

[0053] This embodiment provides a breath color-changing ink, including 20 parts of a connecting material, 30 parts of a solvent, and 1 part of a color-changing material. In this embodiment, the connecting material is acrylic resin, the solvent is ethanol, and the color-changing material is nickel iodide particles. In this embodiment, the nickel iodide is obtained by wet chemical treatment.

[0054] The breath color-changing ink includes a color-changing material, which has an initial color before breathing. After breathing, the color-changing material can react with the water vapor component in the human breath to change color. Therefore, the authenticity of the product can be verified by the breath color change, which has a good anti-counterfeiting effect, thereby solving the problem of the inconvenience of finding liquid water in traditional moisture-sensitive anti-counterfeiting. In addition, the nickel iodide in this embodiment is obtained by wet chemical treatment, and even in ultra-low humidity of 0.5% RH to 10% RH, it also shows excellent color change sensitivity.

[0055] In the meantime, please see Figure 1 The present embodiment further provides a breath color changing label, which includes a base layer 10 and an indicator layer 20 which are stacked, wherein the base layer 10 is a PET film, and the indicator layer 20 is obtained by printing and drying the breath color changing ink provided in the present embodiment.

[0056] The above-mentioned breath color-changing label, the indicator layer 20 is printed by breath color-changing ink, the breath color-changing ink contains a color-changing material, the color-changing material has an initial color before breathing, after breathing, the color-changing material can react with specific components in human breath to change color. Therefore, the authenticity of the product can be verified by the breath color change, which has a good anti-counterfeiting effect, thereby solving the problem of the inconvenience of finding liquid water in traditional moisture-sensitive anti-counterfeiting.

[0057] Example 2

[0058] This embodiment provides a breath color-changing ink, including 30 parts of a connecting material, 40 parts of a solvent, and 3 parts of a color-changing material. In this embodiment, the connecting material is polyurethane epoxy resin, the solvent is isopropyl alcohol, and the color-changing material is nickel iodide that has been subjected to organic hybrid modification treatment with tetramethyl nickel.

[0059] The above-mentioned breath color-changing ink uses nickel iodide that has undergone hybrid modification as the color-changing material. Through the organic hybrid modification treatment, while maintaining the hydrophilicity of the surface of the nickel iodide powder, it produces good hydrophobicity inside. On the one hand, the surface hydrophilicity allows the color-changing material to react sensitively with water vapor, and the color-changing reaction is highly real-time. On the other hand, the good internal hydrophobicity allows the color-changing material to quickly self-dehydrate in a short period of time under a natural environment after the color-changing reaction occurs, thereby restoring the original color, and then having a secondary breath color-changing effect, further enhancing the user experience. In this embodiment, in the breath environment, the color-changing reaction time of the color-changing material is less than 2 seconds. After the breath stops, the color-changing material can self-dehydrate and restore the original color within 15 seconds, thereby creating conditions for the secondary color-changing reaction.

[0060] Also, see Figure 2The present embodiment also provides a breath color changing label. The breath color changing label of the present embodiment is similar to the breath color changing label of Example 1, except that: (1) a protective layer 30 is further provided on the side of the indicator layer 20 away from the base layer 10; and (2) the indicator layer is obtained by printing and drying the breath color changing ink provided in the present embodiment.

[0061] The breath color changing label can protect the indicating layer 20 by providing the protective layer 30 .

[0062] Example 3

[0063] This embodiment provides a breath color-changing ink, including 40 parts of a connecting material, 50 parts of a solvent, and 5 parts of a color-changing material. In this embodiment, the connecting material is acrylic resin, the solvent is acetone, and the color-changing material is nickel chloride powder.

[0064] The above-mentioned breath color-changing ink includes a color-changing material. The color-changing material has an initial color before breathing. After breathing, the color-changing material can undergo a color-changing reaction with the ammonia component in human breath. Therefore, the authenticity of the product can be verified by the breath color change, and it has a good anti-counterfeiting effect, thereby solving the problem of the inconvenience of finding liquid water in traditional moisture-sensitive anti-counterfeiting.

[0065] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A breath color-changing ink, characterized in that: The raw materials for preparing the breath color-changing ink include the following components measured by mass: 20 to 40 parts of connecting material; 30 to 50 parts of solvent; and 1 to 5 parts of color-changing material; The color-changing material can react with specific components in human breath to change color.

2. The breath color-changing ink according to claim 1, characterized in that: The color-changing material can undergo a color-changing reaction with water vapor in human breath.

3. The breath color-changing ink according to claim 2, characterized in that: The color-changing material is nickel iodide.

4. The breath color changing ink according to claim 3, characterized in that: The nickel iodide is obtained by wet chemical treatment.

5. The breath color-changing ink according to claim 3, characterized in that: The nickel iodide is subjected to organic hybrid modification treatment with tetramethyl nickel.

6. The breath color-changing ink according to claim 1, characterized in that: The color-changing material can undergo a color-changing reaction with ammonia in human breath.

7. The breath color-changing ink according to claim 6, characterized in that: The color-changing material is nickel chloride.

8. The breath color changing ink according to any one of claims 1 to 7, characterized in that: The particle size of the color-changing material is 5nm-500nm.

9. A breath color changing label, characterized in that: The invention comprises a base layer and an indicator layer which are stacked, and the indicator layer is obtained by printing and drying the breath color-changing ink according to any one of claims 1 to 8.

10. The breath color changing label according to claim 9, characterized in that: A protective layer is arranged above the indicating layer.

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