A kind of fluorescent ink and preparation method thereof

A fluorescent ink and fluorescent powder technology, which is applied in inks, household utensils, applications, etc., can solve the problems that affect the fluorescence intensity and light stability of fluorescent inks, the limited solubility of organic fluorescent materials, and the non-detection of benzene solvents, etc., to achieve benefits Industrialized mass production, energy-saving and environmentally friendly preparation methods, and good oil solubility

Active Publication Date: 2020-06-19
广州大尊照明设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the greening of inks today, the use of benzene solvents has been restricted in inks, especially in gravure inks closely related to food and drug packaging: According to GB / T 10004-2008 (Plastic composite film for packaging, bag dry method Compounding, Extrusion Compounding-National Standard of the People's Republic of China) requires that the total amount of solvent residues must be less than 5.0mg / m 2 , and benzene solvents are not detected; while GB9685-2008 (Hygienic Standards for the Use of Additives for Food Containers and Packaging Materials-National Standard of the People's Republic of China) clearly stipulates that benzene, toluene and xylene shall not be used in food packaging inks
At present, the environmentally friendly gravure printing ink solvents used in plastic flexible packaging are mainly alcohol esters, which have limited solubility to large conjugated organic fluorescent materials, which greatly affects the fluorescence intensity and light stability of the fluorescent inks produced.

Method used

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  • A kind of fluorescent ink and preparation method thereof

Examples

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Effect test

Embodiment 1

[0026] A fluorescent ink, comprising the following components: fluorescent powder (2%), solvent II (37%) and polyamide resin (30%), n-butanol (30%), wax powder 0.5% and erucamide resin 0.5 %.

[0027] Among them, the preparation of fluorescent powder: the rare earth terbium salt (nitrate or chloride salt), alkali (sodium hydroxide or potassium hydroxide) and ligand 2,6-dihydroxybenzoic acid in a solvent (water or ethanol or water and ethanol) mixed solvent) to obtain a white powder, which glows bright green under ultraviolet light.

[0028] Preparation method: accurately weigh 2.4 grams of self-made fluorescent powder, 22.2 grams of isopropanol, 22.2 grams of methylcyclohexane, 36 grams of n-butanol, 36 grams of polyamide resin, 0.6 grams of wax powder and 0.6 grams of erucamide resin and Put 30 grams of glass beads in an iron can, seal the seal, put the iron can in a shaker to disperse for 30 minutes, and filter to obtain a fluorescent ink.

Embodiment 2

[0030] A fluorescent ink, comprising the following components: fluorescent powder (4%), solvent II (35%) and polyamide resin (30%), n-butanol (30%), wax powder 0.5% and erucamide resin 0.5 %.

[0031] Among them, the preparation of fluorescent powder: the rare earth terbium salt (nitrate or chloride salt), alkali (sodium hydroxide or potassium hydroxide) and ligand 2,6-dihydroxybenzoic acid in a solvent (water or ethanol or water and ethanol) mixed solvent) to obtain a white powder, which glows bright green under ultraviolet light.

[0032] Preparation method is identical with embodiment 1

Embodiment 3

[0034] A fluorescent ink, comprising the following components: fluorescent powder (3%), solvent II (36%) and polyamide resin (28%), n-butanol (32%), wax powder 0.5% and erucamide resin 0.5 %.

[0035] Among them, the preparation of fluorescent powder: the rare earth terbium salt (nitrate or chloride salt), alkali (sodium hydroxide or potassium hydroxide) and ligand 2,6-dihydroxybenzoic acid in a solvent (water or ethanol or water and ethanol) mixed solvent) to obtain a white powder, which glows bright green under ultraviolet light.

[0036] The preparation method is the same as in Example 1.

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Abstract

The invention relates to fluorescent ink and a preparation method thereof. The fluorescent ink comprises the following components in parts by weight: 2-4 parts of fluorescent powder, 28-32 parts of a solvent I, 28-32 parts of polyamide resin, 35-37 parts of a solvent II and an auxiliary I, wherein the fluorescent powder is prepared by reacting rare earth terbium salt, alkali and ligand 2,6-dihydroxy-benzoic acid in the solvent III. The invention further provides the preparation method of the fluorescent ink, which specifically comprises the following steps: accurately weighing and putting a certain quantity of the fluorescent powder, the solvent I, the solvent II, the polyamide resin and the auxiliary I, and a proper amount of glass beads in an iron ladle, sealing, putting the iron ladle in a vibrator to disperse for 25-35 minutes and filtering to prepare the fluorescent ink. The fluorescent ink provided by the invention adopts the fluorescent powder with optimal oil solubility and high brightness, is free from benzene and ketone in a formula, emits bright and green fluorescence under ultraviolet light, and has the advantages of being good in universality, good in stability, high in fluorescence intensity, environment-friendly and the like; the fluorescent ink provided by the invention is simple in production process and high in production efficiency, and facilitates conducive industrial large-batch production.

Description

technical field [0001] The invention relates to the field of anti-counterfeiting inks, in particular to a fluorescent ink with good stability and high fluorescence intensity and a preparation method thereof. Background technique [0002] In recent years, with the continuous development of the economy, counterfeiting and shoddy phenomena have been repeatedly banned, and the significance of anti-counterfeiting technology is becoming more and more important. Currently used anti-counterfeiting technologies mainly include anti-counterfeiting paper technology, anti-counterfeiting ink technology, anti-counterfeiting printing technology and packaging technology, among which anti-counterfeiting ink technology is an extremely important anti-counterfeiting technology field with a wide range of applications, mainly including ultraviolet excitation fluorescent ink, sunlight excitation Color-changing ink, heat-sensitive anti-counterfeiting ink, chemical reaction color-changing ink, intell...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/50
Inventor 唐晖然向华
Owner 广州大尊照明设计有限公司
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