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Water-based optically variable ink and preparation method thereof
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A light-variable ink, water-based technology, applied in the direction of ink, household utensils, applications, etc., to achieve good application prospects, excellent printing performance of adhesion, and the effect of improving compatibility
Pending Publication Date: 2022-01-21
中山市中益油墨涂料有限公司
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Abstract
Description
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Problems solved by technology
[0003] Traditional optically variable inks are all oily, and inevitably contain VOCs. However, water-based optically variable inks have always been difficult to solve the compatibility problem between binders and optically variable pigments. Therefore, it is urgent to develop a water-based optically variable ink with good compatibility. change ink
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Embodiment 1
[0025] A preparation method of water-based optically variable ink, comprising the following steps:
[0026] (1) Take each component by weight ratio in Table 1;
[0027] (2) Add deionized water, ethanol, and silane-modified water-based acrylic emulsion into the reactor, and stir for 40 minutes at a rate of 1000 rpm;
[0028] (3) Add optically variable pigments, water-based dispersants, and anti-sedimentation agents, stir and disperse at a stirring rate of 2500 rpm for 60 minutes, and then grind with a hydraulic three-roller until the ink fineness is below 10 microns;
[0029] (4) Add stabilizer, water-based adhesion promoter, and associative thickener, and stir for 50 minutes at a stirring rate of 400 rpm to obtain the product.
Embodiment 2
[0031] A preparation method of water-based optically variable ink, comprising the following steps:
[0032] (1) Take each component by weight ratio in Table 1;
[0033] (2) Add deionized water, ethanol, and silane-modified water-based acrylic emulsion into the reactor, and stir for 30 minutes at a rate of 800 rpm;
[0034] (3) Add optical variable pigment, water-based dispersant and anti-sedimentation agent, stir and disperse for 50 minutes at a stirring rate of 3000 rpm, and then grind with a hydraulic three-roller until the ink fineness is below 10 microns;
[0035] (4) Add stabilizer, water-based adhesion promoter, and associative thickener, and stir for 50 minutes at a stirring speed of 350 rpm to obtain the product.
Embodiment 3
[0037] A preparation method of water-based optically variable ink, comprising the following steps:
[0038] (1) Take each component by weight ratio in Table 1;
[0039] (2) Add deionized water, ethanol, and silane-modified water-based acrylic emulsion into the reactor, and stir for 60 minutes at a rate of 900 rpm;
[0040] (3) Add optically variable pigments, water-based dispersants, and anti-sedimentation agents, stir and disperse at a stirring rate of 2800 rpm for 55 minutes, and then grind with a hydraulic three-roller until the ink fineness is below 10 microns;
[0041] (4) Add stabilizer, water-based adhesion promoter and associative thickener, and stir for 30 minutes at a stirring speed of 550 rpm to obtain the product.
[0042] Table 1: The weight ratio of the water-based optically variable inks of Examples 1-3:
[0043]
[0044]
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Abstract
The invention provides water-based optically variable ink and a preparation method thereof. The water-based optically variable ink is prepared from 28-38 parts of a silane modified water-based acrylic emulsion, 18-25 parts of deionized water, 6-12 parts of ethyl alcohol, 23-28 parts of optically variable pigment, 0.5-1 part of a water-based dispersing agent, 1.5-3 parts of a stabilizer, 1.5-4 parts of an anti-settling agent, 0.5-1 part of a water-based adhesion promoter and 0.8-2 parts of an associative thickener. The product is environment-friendly and free of VOCs volatilization, the compatibility between the binder and the optically variable pigment can be improved, the optically variable pigment is uniformly distributed, the color changing performance is good, the color is bright, and the adhesive force and the printing performance are good.
Description
technical field [0001] The invention belongs to the technical field of water-based ink, and in particular relates to a water-based optically variable ink and a preparation method thereof. Background technique [0002] Optically variable inks usually have optical color-changing properties, that is, when viewed from the front or side under white light, they will show different colors as the viewing angle of the human eye changes. This optically variable characteristic usually has large color difference changes and obvious features, which can be recognized without any equipment. Moreover, the color angle effect of optically variable inks cannot be reproduced by scanners, color copiers and other equipment. Ink and printing methods cannot be imitated, and the anti-counterfeiting reliability is extremely strong. Therefore, many countries in the world use optical variable inks for anti-counterfeiting of currency and securities. [0003] Traditional optically variable inks are all...
Claims
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Application Information
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