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Environment-friendly, strong acid-resistant, strong base-resistant and steaming-resistant ink and preparation method

A technology of cooking ink and acid and alkali resistance, which is applied in the field of printing ink, can solve the problems of solvent-based ink pollution and other problems, achieve the effect of bright color of ink layer, improve water resistance, and enhance comprehensive performance

Active Publication Date: 2012-03-21
三维印制(厦门)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides an environmentally friendly strong acid and alkali resistant cooking ink formula and its preparation method using water and isopropanol as solvents, which overcomes the pollution problem of solvent-based inks and has excellent strong acid and alkali cooking performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034][Example 1] Add 0.4 parts of dispersant to 8.5 parts (refer to parts by weight, the same below) of isopropanol, the dispersant is a non-ionic dispersant, the active ingredient is 95% (by weight), and the pH is 6.0 ~ 8.0, Has good water resistance, free of alkylphenol ethoxylates, solvents and halides, such as HLD-12 dispersant (commercially available), after magnetic stirring evenly, add 75.5 parts of water-based polyurethane emulsion, water-based polyurethane emulsion is anti-yellowing Aliphatic type, solid content of 10~30% (weight), emulsion particle size distribution of 10~500nm, pH of 7~9.5, glass transition temperature ≤ -35℃, heat modification temperature ≥170℃, such as water-based polyurethane emulsion 600WF (commercially available), after the magnetic stirring is even, put the above system into the sand mill container, 600 rpm low speed sand mill and stir. Weigh 8 parts of phthalocyanine blue NCF (commercially available) and 8 parts of nano-alumina. The crystal ...

Embodiment 2

[0035] [Example 2] Add 0.4 parts of dispersant to 10.5 parts of isopropanol, and after magnetically stirring evenly, add 76.5 parts of water-based polyurethane emulsion. Grind and stir. Weigh 8 parts of phthalocyanine blue NCF and 5 parts of nano-alumina respectively, and add them into the sanding container. Then, 120 parts of zirconia beads with a diameter of 0.8 mm were added, the rotating speed was increased to 2000 rpm, and the sand mill was dispersed for 60 minutes. 5 minutes before the sand mill dispersion is completed, add 0.3 parts of defoamer, and take out the ink system after the dispersion is completed. Add 4% (weight) of aziridine cross-linking agent to the ink system, stir evenly, and then print on the surface of PET and other plastics.

Embodiment 3

[0036] [Example 3] Add 0.4 parts of dispersant to 12.5 parts of isopropanol, and after magnetically stirring evenly, add 69.5 parts of water-based polyurethane emulsion. Grind and stir. Weigh 8 parts of phthalocyanine blue NCF and 10 parts of nano-alumina respectively, and add them into the sanding container. Then, 120 parts of zirconia beads with a diameter of 0.8 mm were added, the rotating speed was increased to 2000 rpm, and the sand mill was dispersed for 60 minutes. 2 minutes before the completion of the sand mill dispersion, add 0.3 parts of defoamer, and take out the ink system after the dispersion is completed. Add 5% (weight) of isocyanate crosslinking agent to the ink system, such as isophorone diisocyanate (commercially available), and after stirring evenly, it can be printed on the surface of PET and other plastics.

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PUM

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Abstract

The invention relates to environment-friendly, acid-resistant, base-resistant and steaming-resistant ink. The ink comprises a component A, namely ink, and a component B, namely a crosslinking agent, wherein the composition and the weight ratio of the component A and the component B are as follows: the component A comprises 64.5-78.5 parts of aqueous polyurethane emulsion, 8 parts of organic pigment, 3-10 parts of nano-sized aluminum oxide, 8.5-20.5 parts of isopropanol, 0.4 parts of dispersing agent and 0.3 parts of antifoaming agent; and the weight of the component B is 3-5 percent of that of the component A. The preparation method is simple; a single aqueous resin is used as an ink bonding material; the comprehensive performance of the ink, such as water resistance, high temperature resistance and bonding firmness, is improved by adding the nano-sized aluminum oxide for the first time, and the color fixing effect can be achieved; the types of raw materials are reduced; the price is low; and the environment-friendly, strong acid-resistant, strong base-resistant and steaming-resistant ink is applicable to flexible packaging materials which are resistant to steaming sterilization for a long time.

Description

technical field [0001] The invention relates to an environment-friendly strong acid and alkali resistant cooking ink and a preparation method thereof, belonging to the field of printing inks. Background technique [0002] With the improvement of living standards and environmental awareness, people have put forward higher requirements for flexible packaging printing products. Flexible packaging printed matter, especially external flexible packaging materials such as food and medicine, requires that the ink not fall off, not fade, and not release toxic substances during the process of high-temperature sterilization. In this way, printing inks that meet such high performance conditions and are suitable for high temperature and retort resistance are required to match it. Traditional retort-resistant inks use polyurethane, vinyl chloride resin, and chlorinated polypropylene as binders, and use toxic methyl ethyl ketone and xylene as solvents, which seriously pollute the environm...

Claims

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Application Information

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IPC IPC(8): C09D11/10C09D11/03C09D11/033C09D11/102
Inventor 李路海胡旭伟李文博
Owner 三维印制(厦门)新材料有限公司
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