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A kind of magnetic anti-counterfeiting ink and preparation method thereof

An anti-counterfeiting ink and magnetic technology, applied in inks, household appliances, applications, etc., can solve the problems of ambiguity, no detailed formula, poor single-component magnetization value and quality effect, etc., and achieve the effect of good performance and simple preparation method.

Inactive Publication Date: 2011-12-21
HONGBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Invention patent (application number 94102965.4) discloses a formula and preparation method of magnetic ink, but the specific content of the formula is not specified in detail, which is rather vague. In addition, the specific saturation magnetization of the ink in a 16000 Oersted magnetic field is only 15 ×10 -6 e.m.u, and the magnetization effect of single component is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The raw material of a kind of magnetic anti-counterfeiting ink and its mass parts include: magnetic pigment, connecting material, filler and additional material, wherein 40 parts of magnetic pigment, 30 parts of connecting material, 5 parts of filler, 15 parts of additional material.

[0020] The magnetic material is nano ferric oxide and nano ferric oxide; the mass ratio of the two is 1 / 5.

[0021] Both the nano ferric oxide and the nano ferric oxide are nano acicular materials.

[0022] The binder is a mixture of synthetic resin and natural vegetable oil with a mass ratio of 3 / 10.

[0023] The synthetic resin includes thermoplastic polyurethane resin.

[0024] The filler includes nanometer calcium carbonate.

[0025] The additional material includes a stabilizer, a dispersant and a lubricant; the mass ratio of the stabilizer, the dispersant and the lubricant is 1:1.5:1.

[0026] The stabilizer is barium stearate; the dispersant is ammonium citrate and polyethylene ...

Embodiment 2

[0029] A raw material of magnetic anti-counterfeiting ink and its mass parts include: magnetic pigment, binder, filler and additional material, wherein 60 parts of magnetic pigment, 15 parts of binder, 7 parts of filler, and 5 parts of additional material.

[0030] The magnetic material is nano ferric oxide and nano iron oxide; the mass ratio of the two is 4 / 5.

[0031] Both the nano ferric oxide and the nano ferric oxide are nano acicular materials.

[0032] The connecting material is a mixture of synthetic resin and natural vegetable oil, and its mass ratio is 17 / 25.

[0033] The mass ratio of the stabilizer, dispersant and lubricant is: 1:3:2.

[0034]

[0035] The parts not mentioned above are the same as in Embodiment 1.

Embodiment 3

[0037] A magnetic anti-counterfeiting ink raw material and its mass parts include: magnetic pigment, binder, filler and additional material, wherein 50 parts of magnetic pigment, 25 parts of binder, 6 parts of filler, and 10 parts of additional material.

[0038] The magnetic material is nano ferric oxide and nano iron oxide; the mass ratio of the two is . / 5.

[0039] Both the nano ferric oxide and the nano ferric oxide are nano acicular materials.

[0040] The connecting material is a mixture of synthetic resin and natural vegetable oil with a mass ratio of 1 / 2.

[0041] The mass ratio of the stabilizer, dispersant and lubricant is: 2:3:1.

[0042] The parts not mentioned above are the same as in Embodiment 1.

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Abstract

The invention relates to a magnetic anti-counterfeiting ink and a preparation method thereof. The raw materials and parts by mass of the ink include: magnetic pigments, binders, fillers and additional materials, wherein 40-60 parts of magnetic pigments, 15-30 parts of binders parts, 5-7 parts of filling material, 5-15 parts of additional material. The preparation method of the present invention is simple, and through scientific material selection and reasonable proportioning, the relative residual magnetization strength of the prepared magnetic ink is ≤8%, the coercive force is ≥18000A / m, and the anti-counterfeiting safety period can reach Class B.

Description

technical field [0001] The invention belongs to the field of anti-counterfeiting printing, and more specifically relates to a formula of magnetic anti-counterfeiting magnetic ink based on filling and modification of magnetic particles and a preparation method thereof. Background technique [0002] Anti-counterfeiting has become a topic of widespread concern in society. Although some popular anti-counterfeiting technologies have been adopted by some enterprises, these technologies have different degrees of problems, mainly in the following aspects: 1. The stability of the products is poor; 2. The relevant testing equipment is backward and cannot universal. As a relatively popular anti-counterfeiting ink, magnetic ink is mainly used in the field of anti-counterfeiting printing, and has excellent anti-counterfeiting performance. First of all, its anti-counterfeiting point is relatively hidden, and its confidentiality is strong; on the other hand, its magnetization performance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/02C09D11/06C09D11/10C09D11/102C09D11/50
Inventor 刘源海廖金辉
Owner HONGBO CO LTD