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Anti-fake ink

An anti-counterfeiting ink and fluorescent pigment technology, applied in the field of ink, can solve the problems of difficulty in dispersion, difficult to formulate and form ink, and agglomeration, and achieve the effect of solving easy agglomeration and improving dispersibility.

Inactive Publication Date: 2020-01-17
湖北中北博睿科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the magnetic nano ferric oxide particles are difficult to disperse in the organic binder, and are prone to large-scale agglomeration, which makes it difficult to prepare the ink

Method used

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  • Anti-fake ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Preparation of fluorescent pigments: Accurately weigh 1.5 g of hydroxypropyl carboxymethyl cellulose, dissolve it in 100 mL of deionized water, place it in an instant heating constant temperature magnetic stirrer, and pipette the EuCl 3 The solution makes the mass ratio of hydroxypropyl carboxymethyl cellulose to Eu be 15:1, and is added dropwise to the completely dissolved hydroxypropyl carboxymethyl cellulose solution, and reacted with 6mol / L HCl and 1mol / L NaOH The pH of the solution was adjusted to 6.0, and then the solution was placed in a microwave synthesizer to adjust the reaction temperature to 70°C, the reaction time was 10min, and the microwave power P=800W. After the reaction was completed, the reaction solution was poured into a dialysis bag and sealed for dialysis. bag, put it in deionized water to remove excess unreacted anions in the reaction solution, during dialysis, continuously use AgNO3 solution to detect Cl in deionized water -1 Pour the solution i...

Embodiment 2

[0020] Preparation of fluorescent pigments: Accurately weigh 1.5 g of carboxymethyl cellulose, dissolve it in 100 mL of deionized water, place it in an instant heating constant temperature magnetic stirrer, and pipette the EuCl 3 The solution was such that the mass ratio of carboxymethyl cellulose to Eu was 15:1, and was added dropwise to the completely dissolved carboxymethyl cellulose solution, and the pH of the reaction solution was adjusted to 6.0 with 6mol / L HCl and 1mol / L NaOH , and then place the solution in a microwave synthesizer to adjust the reaction temperature to 70°C, the reaction time to 10min, and the microwave power P=800W. After the reaction is completed, pour the reaction solution into a dialysis bag, seal the dialysis bag, and place it in Deionized water to remove excess unreacted anions in the reaction solution, during dialysis, continuously use AgNO3 solution to detect Cl in deionized water -1 Pour the solution in the dialysis bag into a clean petri dish ...

Embodiment 3

[0022] Preparation of carboxyl nano-ferric oxide: 3.48g Fe 3 o 4 Nanoparticles were ultrasonically dispersed in 100mL deionized water to prepare a suspension, and then the obtained suspension was transferred into a conical flask, stirred mechanically for 10 min, mixed evenly with 5mL oleic acid and 15mL absolute ethanol, and then slowly poured into the conical flask In a shaped bottle, the oil bath was heated to 75 °C, and the reaction was mechanically stirred at a constant temperature for 4 h to obtain a black suspension, which was washed with distilled water and absolute ethanol for several times, and the magnetic Fe coated with oleic acid was collected under an external magnetic field. 3 o 4 Nanoparticles, weigh 0.8 g KMnO 4 Dissolve it in 140 mL of deionized water, and add about 1 mL of concentrated sulfuric acid dropwise to it to prepare an acidic potassium permanganate solution. Washed oleic acid coated magnetic Fe 3 o 4 Place the nanoparticles in the conical flask,...

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Abstract

The invention discloses an anti-fake ink which comprises the following components in parts by mass: 50-80 parts of a prepolymer, 10-20 parts of a composite photoinitiator, 20-30 parts of carboxylatedFe3O4 magnetic nanoparticles, 10-20 parts of hydrophobic gaseous silicon dioxide, 1-5 parts of an amphiphilic surfactant and 10-20 parts of a fluorescent pigment. The anti-fake ink is good in identification performance, magnetic nano-iron tetroxide particles are dispersed evenly, and the anti-fake ink is resistant to rubbing without degaussing.

Description

technical field [0001] The invention relates to the field of inks, in particular to an anti-counterfeit ink. Background technique [0002] Magnetic anti-counterfeiting ink uses magnetic materials as pigments, so that the printed ink layer can detect magnetic signals, so as to achieve the purpose of anti-counterfeiting. Magnetic anti-counterfeiting ink is a functional ink, which consists of four main components: magnetic pigments, solvents, binders and additives. An important component of anti-counterfeiting ink, which determines the magnetic properties of magnetic anti-counterfeiting ink. [0003] In the prior art, the magnetic nano ferric oxide particles are difficult to disperse in the organic binder, and are prone to large-scale agglomeration, which makes it difficult to form the ink. Contents of the invention [0004] In order to solve the above problems, the present invention provides an anti-counterfeiting ink, which has strong identification, uniformly dispersed m...

Claims

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Application Information

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IPC IPC(8): C09D11/50C09D11/101C09D11/037C09D11/03
CPCC09D11/50C09D11/101C09D11/037C09D11/03
Inventor 任强曾凡庚
Owner 湖北中北博睿科技有限公司
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