Magnetic iron oxide basis material for anti-forgery ink and preparation method thereof

A magnetic iron oxide, matrix material technology, applied in inks, applications, household appliances, etc., can solve the problems of uneven dispersion of magnetic pigments, unstable product quality, poor stability, etc., and achieve high gloss, excellent adhesion, and stable magnetic properties. Effect

Inactive Publication Date: 2014-07-16
襄阳金飞环彩色包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The simple physical dispersion effect between the magnetic pigment and the linking material cannot achieve the required dispersion effect. The uneven dispersion of the magnetic pigment makes the dispersion stability of the pigment in the linking material poor, and it is prone to layered precipitation and other phenomena, resulting in product quality. unstable

Method used

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  • Magnetic iron oxide basis material for anti-forgery ink and preparation method thereof
  • Magnetic iron oxide basis material for anti-forgery ink and preparation method thereof
  • Magnetic iron oxide basis material for anti-forgery ink and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0042] 3. A method for preparing a magnetic iron oxide base material for anti-counterfeiting ink, comprising the following steps:

[0043] a. A mixture of hexamethylene diisocyanate and isophorone diisocyanate, polyethylene glycol, a mixture of dimethylol propionic acid and dimethylol butyric acid, N-methylpyrrolidone, 1,4- Butylene glycol, lithium hydroxide, ferrous chloride, ferric chloride, and deionized water are used as raw materials, and the measured polyethylene glycol, ferrous chloride, and ferric chloride are dried, and LiOH aqueous solution is configured and divided into two parts for later use;

[0044] In the step a, the drying is to dry polyethylene glycol, ferrous chloride and ferric chloride in a constant temperature drying oven at 120° C. for 2 hours.

[0045] In the step a, the concentration of the LiOH aqueous solution is 2mol / L, and the LiOH aqueous solution is divided into two parts according to the ratio of 1:4 for future use.

[0046] b. The polyethylene...

Embodiment 1

[0052] Example 1, a magnetic iron oxide matrix material for anti-counterfeiting ink, including the following raw materials in parts by weight: mixture of hexamethylene diisocyanate (HDI) and isophorone diisocyanate (IPDI): 9 parts (HDI 4 parts for IPDI, 5 parts for IPDI), polyethylene glycol-2000 (PEG-2000): 24 parts, mixture of hydrophilic chain extender dimethylol propionic acid (DMPA) and dimethylol butyric acid (DMBA) : 2 parts (DMPA and DMBA each 1 part), N-Methylpyrrolidone (NMP): 3 parts, 1,4-Butanediol (BDO): 0.5 parts, Triethylamine (TEA): 2 parts, Hydroxide Lithium (LiOH): 1.5 parts, ferrous chloride (FeCl 2 4H 2 O): 2.4 parts, ferric chloride (FeCl 3 ·6H 2 O): 4 parts, deionized water: 57 parts; catalyst butyltin dilaurate is also included, accounting for 1‰ of the total weight of the above raw materials. The raw material weight ratio table is shown in Table 1.

[0053] Table 1 Waterborne polyurethane-based magnetic Fe 3 o 4 Matching table

[0054] ...

Embodiment 2

[0065] Embodiment 2, a magnetic iron oxide base material for anti-counterfeiting ink, including the following raw materials in parts by weight:

[0066] Table 2 Waterborne polyurethane-based magnetic Fe 3 o 4 Matching table

[0067] HDI

IPDI

PEG-2000

BDO

DMBA

TEA

DMPA

LiOH

FeCl 2

FeCl 3

NMP

DBTDL

h 2 o

2

4

17

0.3

0.7

1.4

0.7

1.2

2.0

3

2.6

0.007

51

[0068] The catalyst also includes butyltin dilaurate, accounting for 0.1‰ of the total weight of the above raw materials.

[0069] Preparation method: comprising the following steps:

[0070] a , the measured PEG-2000, FeCl 2 4H 2 O and FeCl 3 ·6H 2 O was placed in a constant temperature drying oven and dried at 120 °C for 2 hours, and a 2 mol / L LiOH aqueous solution was prepared with LiOH and deionized water and divided into two parts according to the ratio of 1:4 for later use.

[0071] b , After ...

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PUM

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Abstract

The invention discloses a magnetic iron oxide basis material for anti-forgery ink and a preparation method thereof, wherein the material consists of the following raw materials: a mixture of hexamethylene diisocyanate and isophorone diisocyanate, polyhexanediol, a mixture of dimethylol propionic acid and dimethylol butanoic acid, N-methyl pyrrolidone, 1,4-butanediol, lithium hydroxide, triethylamine, ferrous chloride, ferric chloride, de-ionized water and a catalyst. The preparation method comprises the following steps of: making polyhexanediol, ferrous chloride and ferric chloride react in a water bath in presence of nitrogen; adding the mixture of the hexamethylene diisocyanate (HDI) and the isophorone diisocyanate (IPDI), and the catalyst, and reacting; adding the dimethylol propionic acid (DMPA) and the dimethylol butanoic acid (DMBA) which are dispersed in the N-methyl pyrrolidone (NMP), and reacting; adding the 1,4-butanediol, the triethylamine (TEA) and the lithium hydroxide (LiOH) liquid, emuslfiying and regulating the pH value to be alkaline; and reacting to obtain the product. The preparation method disclosed by the invention is simple in process and convenient in operation, and the prepared material has stable magnetism and excellent dispersing performance.

Description

technical field [0001] The invention belongs to the technical field of magnetic anti-counterfeiting inks, and relates to a magnetic iron oxide matrix material used for anti-counterfeiting inks and a preparation method. Background technique [0002] Magnetic anti-counterfeiting ink is an anti-counterfeiting printing ink made of magnetic powder material as a functional component. It is the most commonly used anti-counterfeiting ink. Its outstanding features are its darker appearance and relatively simple detection equipment. It has been widely used in many fields. With the advancement of science and technology, the innovation of anti-counterfeiting technology and the continuous improvement of printing technology, magnetic ink has played an increasingly important role in anti-counterfeiting printing, and it has been used in all walks of life in combination with other anti-counterfeiting technologies. [0003] The material with magnetic effect in magnetic ink is iron oxide blac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/73C08G18/75C08G18/66C08G18/48C08G18/34C08G18/24C08K3/22C09D11/102C09D11/03
Inventor 何顺昌方长青周星李利卿李鹏刘少龙
Owner 襄阳金飞环彩色包装有限公司
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