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Water-soluble (Ultra Violet) curing ink and preparation method thereof

A water-based ink technology, applied in ink, household utensils, applications, etc., can solve the problems of gloss, hardness, adhesion, aging resistance, wear resistance, poor water resistance, and good hydrophilicity, etc., to achieve adhesion and Excellent wear resistance, aging resistance and solvent resistance, fast curing effect

Active Publication Date: 2013-03-20
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water-based UV-curable inks disclosed in the above-mentioned existing patents still have the following disadvantages: (1) The water-based UV-curable inks have good hydrophilicity and relatively poor water resistance
(2) The linking materials in water-based UV curing inks, such as polyurethane acrylate or epoxy acrylate polymers, are usually synthesized by "one-step method", the microscopic reaction process is not easy to control, and the stability of the ink produced is poor
(3) Compared with solvent-based inks, there is still a big gap in comprehensive properties such as gloss, hardness, adhesion, aging resistance, and abrasion resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041]Under the condition of nitrogen protection and stirring at 150rpm, first add 10g of polyethylene glycol (molecular weight: 400), 8.7g of toluene-2,4-diisocyanate and 0.009g of dibutyltin dilaurate into a three-necked flask. React for 3 hours; add 1.41g of dimethylolpropionic acid, react at 75°C for 1.5h; add 2.9g of hydroxyethyl acrylate and 0.0015g of hydroquinone, react for 1.5h at 80°C, add 4.06g of acetone during the reaction to adjust Viscosity: lower the temperature to below 50°C, add 1.22g of triethylamine to neutralize and form a salt, and prepare anionic water-based polyurethane acrylate. The above-mentioned anionic water-based polyurethane acrylate was blended with 3.14 g of water-based silica sol (20 nm), and stirred at 500 rpm for 1 hour to obtain a silica sol-modified water-based polyurethane acrylate prepolymer. Take 7g of the above-mentioned silica sol-modified water-based polyurethane acrylate prepolymer, 1g of water-based red pigment and 0.95g of deioniz...

Embodiment 2

[0045] Under the condition of nitrogen protection and stirring at 150rpm, first add 10g of polyethylene glycol (molecular weight: 400), 4.35g of toluene-2,4-diisocyanate and 0.001g of dibutyltin dilaurate into a three-necked flask. React for 2 hours; add 0.44g of dimethylolpropionic acid, react for 2 hours at 70°C; add 1.45g of hydroxyethyl methacrylate and 0.0001g of hydroquinone, react for 1h at 90°C, add 1.8g of acetone during the reaction to adjust Viscosity: lower the temperature to below 50°C, add 0.3g triethylamine to neutralize and form a salt, and prepare anionic water-based polyurethane acrylate. The above-mentioned anionic water-based polyurethane acrylate was blended with 0.18 g of water-based silica sol (20 nm), and stirred at 600 rpm for 0.5 h to obtain a silica sol-modified water-based polyurethane acrylate prepolymer. Take 6g of the above-mentioned silica sol-modified water-based polyurethane acrylate prepolymer, 1.5g of water-based green pigment and 2g of ...

Embodiment 3

[0049] Under the condition of nitrogen protection and stirring at 150rpm, first add 25g of polycaprolactone diol (molecular weight: 1000), 13.05g of toluene-2,4-diisocyanate and 0.023g of dibutyltin dilaurate into the three-necked flask. React at 60°C for 1 hour; add 2.56g of dimethylolpropionic acid, react at 80°C for 1 hour; add 2.35g of hydroxyethyl acrylate, 2.00g of hydroxyethyl methacrylate and 0.0044g of hydroquinone, and react at 70°C 2h, 7.5g of acetone was added during the reaction to adjust the viscosity; the temperature was lowered to below 50°C, and 2.42g of triethylamine was added to neutralize and form a salt to obtain an anionic water-based polyurethane acrylate. The above-mentioned anionic water-based polyurethane acrylate was blended with 9.98 g of water-based silica sol (20 nm), and stirred at 600 rpm for 0.8 h to obtain a silica sol-modified water-based polyurethane acrylate prepolymer. Take 8.5g of the above-mentioned silica sol-modified water-based po...

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PUM

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Abstract

The invention relates to a water-soluble (Ultra Violet) curing ink and a preparation method thereof, and belongs to the technical field of environmental protection ink. The water-soluble UV curing ink comprises the following components by mass percent: 60 to 85% of silica sol modified water-soluble urethane acrylate prepolymer, 1 to 10% of photoinitiator, 5 to 15% of pigment, 5 to 20% of solvent and 0 to 1% of assistant. The water-soluble UV curing ink is environment-friendly, nontoxic, fast in curing rate, high in stability, excellent in ageing resistance and solvent resistance, outstanding in adhesive force and wear resistance and suitable for a plurality of printing modes, meets the production requirement, and can be widely applied to the surfaces of printing materials such as paper materials, wood materials, plastics, metals and glass.

Description

technical field [0001] The invention relates to a water-based UV curable ink and a preparation method thereof, belonging to the technical field of environmental protection inks. Background technique [0002] Traditional solvent-based inks are mainly composed of pigments, binders, organic solvents and additives. VOC (volatile organic compounds) emissions are large and environmental pollution is serious, posing a huge threat to air quality, packaging contents and human health. Water-based ink uses water as a solvent instead of organic solvents, which significantly reduces VOC emissions, prevents air pollution, does not affect human health, and has good overall ink performance. It is especially suitable for food, beverages, medicines, children's toys, etc. that require high hygiene conditions. packaging prints. However, it has disadvantages such as poor solvent resistance, slow drying, poor gloss, and easy to cause paper shrinkage. UV curing ink is a new application in the fi...

Claims

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Application Information

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IPC IPC(8): C09D11/10C08G18/67C08G18/10C09D11/101
Inventor 刘兴海吕彩虹杨耀黎厚斌黄驰钱俊
Owner WUHAN UNIV
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