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UV curable aqueous resin composition

A water-based resin and composition technology, applied in coatings, inks, household appliances, etc., can solve the problems of uneven surface of the substrate, hue distortion, thickening of the ink layer, etc., and achieve non-toxic products, excellent water resistance, and film gloss. high degree of effect

Inactive Publication Date: 2006-10-11
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there is no solvent volatilization after UV ink is printed, and the thickness of the ink layer is rarely reduced after drying. Therefore, under the same printing conditions, the thickness of the ink layer of UV ink is thicker than that of solvent ink. When printing, due to the superposition of colors, the ink layer becomes obviously thicker, causing the surface of the substrate to be uneven. Under a certain pressure of the scraper, the ink will flow to the depression, causing the hue distortion caused by the expansion of the dots.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0029] In a four-necked flask equipped with a stirrer, a thermometer and a condenser tube, drop into 34g of 2,2-dimethylolpropionic acid, 120g of epoxy acrylic resin, and 500g of polytetramethylene glycol (Mn=2000) to dissolve Finally, add an appropriate amount of catalyst dibutyltin dilaurate and polymerization inhibitor p-hydroxyanisole, and then add 205g of toluene diisocyanate dropwise at a rate of 60 drops / min. ℃ for 1.5 hours, then add 60g of hydroxyethyl acrylate and keep it warm for 30min, then raise the temperature to 85℃ for another 2h, until the isocyanate in the reaction system basically disappears, finally cool down to below 50℃, slowly add 25g of triethylamine, Stir at 40-50°C for about 1 hour, slowly add a certain amount of deionized water, and stir quickly to obtain an aqueous emulsion, which is filtered with a 200-mesh filter cloth and packaged to obtain the water-soluble UV light of the present invention. Curing Modified Epoxy Acrylic Resin A-1.

Synthetic example 2

[0031]Put 34g of 2,2-dimethylolpropionic acid, 120g of epoxy acrylic resin, and 500g of polyester polyol JW-2503 into a four-necked flask equipped with a stirrer, thermometer and condenser respectively, and then add an appropriate amount of The catalyst dibutyltin dilaurate and the polymerization inhibitor p-hydroxyanisole, and then add 225g of isophorone diisocyanate dropwise at a rate of 60 drops / minute, and after the dropwise addition is completed and the temperature is stable, the temperature is raised to 60°C-70°C React for 1.5 hours, then add 60g of hydroxyethyl acrylate and keep it warm for 30min, then raise the temperature to 85°C and react for 2h until the isocyanate in the reaction system basically disappears, finally cool down to below 50°C, slowly add 25g of triethylamine, Stir at 40-50°C for about 1 hour, slowly add a certain amount of deionized water, and stir quickly to obtain an aqueous emulsion, filter it with a 200-mesh filter cloth and pack it to obtain the w...

Embodiment 1

[0033] Water-based aromatic light-curing modified epoxy acrylic resin (A-1) 45%

[0034] 4'-(2-Hydroxyethoxy)-2-hydroxy-2-methylpropiophenone 4%

[0035] Water-based leveling agent 1%

[0036] Deionized water 50%

[0037] Mix the above-mentioned components in proportion, stir at 40°C-45°C for about 1 hour, and filter with a 200-mesh filter cloth to obtain the UV-curable paper-based water-based finishing agent of the present invention. It is a milky white liquid with blue light. Apply this finishing agent to coated paper, artificial PU leather, and aluminum plate (material), level it at 50°C for 5 minutes, irradiate it with a 1000W high-pressure mercury lamp (lamp distance 25cm), and measure its film-forming properties after curing. The results are shown in the table 1.

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PUM

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Abstract

The invention discloses a composition of vis-UV cured water resin, which consists of (A) 10-70 mass % of water epoxy acrylate solidified and modified by the ray; (B) 0 mass % -10 mass % of water acrylate monomer or water acrylate prepolymer; (C) 1 mass % -5 mass % of photochemical initiator; (D) 0.1 mass % -8 mass % of adjuvant; (E) 10 mass % -60 mass % of deionized water or alcoholic dissolvent; the composition can be used for water UV solidifying paint solidified by vis-UV, water UV solidified finishing and water UV solidified ink binding material; the external appearance of the vis-UV cured water composition is lacte or lacte liquid with blue rays; it can be diluted with water, the viscosity can be adjusted and the inducration speed is fast; it is nontoxic, ordorless, safety and environment-friendly; after the solidification by the ultraviolet, its film is neat and smooth, is of high glossiness, and is of good flexibility, scratch resistance, water resistance and solvent resistance.

Description

technical field [0001] The invention belongs to a UV-curable water-based finishing agent in the field of light chemical industry, and in particular relates to a UV-curable water-based resin composition. technical background [0002] Paper, artificial leather or natural leather, plastic, metal, wood and other substrates are widely used in human life, but with the improvement of people's living standards, higher requirements are put forward for the performance and performance of the above materials. Light finishing is a very effective method. The surface of the above-mentioned materials without glazing is rough, lacks luster, and the color is not bright, especially in terms of water resistance, oil resistance, chemical resistance, wet and dry rub resistance, and impact resistance. For example, UV-curable varnish has become the first choice for surface treatment of high-end printed matter, especially on the covers of paper packaging boxes, books, magazines, etc. However, the c...

Claims

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Application Information

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IPC IPC(8): C08L33/14C09D11/101C09D133/14
Inventor 梁亮
Owner GUANGDONG UNIV OF TECH
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