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Urethane acrylate waterborne UV coating and preparation method thereof

A technology of urethane acrylate and acrylate, applied in the field of urethane acrylate type waterborne UV coatings, can solve the problems of increasing the energy consumption and danger of waterborne UV coating production, and achieve lower production risks, lower equipment requirements, and lower energy consumption. Effect

Active Publication Date: 2010-01-20
GUANGDONG HUARUN PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the preparation of water-based UV coating resins at home and abroad is mostly the solvent method, which requires acetone or nitrogen methyl pyrrolidone to be diluted and then dispersed in water. Therefore, extraction is required in the preparation process, which increases the production energy consumption and danger of the preparation of water-based UV coatings. sex

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0030] The first step, making polyether acrylate

[0031] Put 222.3 g of isophorone diisocyanate into the reaction kettle equipped with stirring, nitrogen, constant pressure dropping funnel and thermometer. The mixture of 92.8g of hydroxyethyl ester, 0.06g of dibutyltin dilaurate and 1.6g of hydroquinone was added dropwise within 1h, and the temperature was raised to 70°C. After 3h of reaction, the NCO value was about 15.90gNCO / 100g, and it was stable at After the value is around, add 120g of polyethylene glycol 200 dropwise; polyethylene glycol 200 belongs to polyether. After 1 hour of dripping, continue the reaction for 6 hours until the NCO value is constant, ie <0.3gNCO / 100g, to obtain polyether acrylate.

[0032] The second step, making polyurethane acrylate

[0033] In the reactor that stirring, nitrogen, constant pressure dropping funnel and thermometer are installed, drop into 222.3g isophorone diisocyanate IPDI, dimethylolpropane 30g, the polyether type acrylate 200...

no. 2 example

[0041] The first step, making polyether acrylate

[0042] The first step of this second embodiment is completely the same as the first step of the first embodiment and is omitted.

[0043] The second step, making polyurethane acrylate

[0044] In the reactor that stirring, nitrogen, constant pressure dropping funnel and thermometer are installed, drop into 222.3g isophorone diisocyanate IPDI, dimethylolpropane 30g, the polyether type acrylate 200g that the first step makes and two Dibutyltin laurate 0.22g, temperature control at 60°C, add 1104g polyester diol P1838 after the reaction is clear, continue the reaction until the NCO value is constant, about 2.70NCO / 100g, and then slowly drop it with a constant pressure dropping funnel (Meth)acrylic acid-2-hydroxyethyl 116g, 1h dropwise, after the dropwise addition was completed, the temperature was raised to 70°C, and the reaction was carried out until the NCO value was constant, ie <0.3gNCO / 100g. After the reaction was complete...

no. 3 example

[0051] The first step, making polyether acrylate

[0052] The first step of the third embodiment is completely the same as the first step of the first embodiment, and is omitted.

[0053] The second step, making polyurethane acrylate

[0054] In the reactor that stirring, nitrogen, constant pressure dropping funnel and thermometer are installed, drop into 222.3g isophorone diisocyanate IPDI, dimethylolpropane 30g, the polyether type acrylate 200g that the first step makes and two Dibutyltin laurate 0.22g, temperature control at 60°C, add 1104g polyester diol P3192 after the reaction is clear, continue the reaction until the NCO value is constant, about 2.70NCO / 100g, and then slowly drop it with a constant pressure dropping funnel (Meth)acrylic acid-2-hydroxyethyl 116g, 1h dropwise, after the dropwise addition was completed, the temperature was raised to 70°C, and the reaction was carried out until the NCO value was constant, ie <0.3gNCO / 100g. After the reaction was completed...

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Abstract

The invention relates to a urethane acrylate waterborne UV coating and a preparation method thereof; the urethane acrylate waterborne UV coating comprises the following components according to the parts by weight: 5-25 parts of polyether acrylate, 10-60 parts of urethane acrylate, 2-5 parts of photoinitiator, 0.05-0.5 part of defoaming agent, 0.05-0.5 part of wetting agent and 40-80 parts of deionized water; the preparation method comprises the following steps: weighting each component according to the proportion by weight, then mixing polyether acrylate and urethane acrylate to prepare a mixture, then adding photoinitiator, defoaming agent, wetting agent and waterborne mildewproof agent in the mixture, stirring for 0.5-2h, then slowly dripping deionized water by phase inversion method to disperse the solution and obtaining stable emulsion, wherein, the dripping time of deionized water is 1-3h. The invention is characterized by small investment, simple process, environmental friend and non-toxic, excellent film performance, remarkable economic and social benefits and good market application prospect.

Description

technical field [0001] The invention relates to a polyurethane acrylate water-based UV coating and a preparation method thereof, comprising polyether acrylate and polyurethane acrylate and a preparation method thereof. Background technique [0002] Environmental protection is one of the main directions of modern chemical development. With the trend of globalization and the further development of China's economy, the concept of environmental protection is gradually accepted and valued by governments and people of various countries. According to statistics, the world releases 20 million tons of hydrocarbons into the atmosphere every year, of which 10 million tons are organic solvents, most of which are produced by the coating industry. The organic solvent discharged into the atmosphere during paint manufacturing is 20% of the paint output, and the organic solvent volatilized into the atmosphere during the paint coating process is 50% to 80% of the paint amount. These organic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D171/08C09D5/00C08G65/40C08G18/48C08G18/66
Inventor 王韬曾光明陈能昌陈晓锐温晋嵩
Owner GUANGDONG HUARUN PAINT CO LTD
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