UV hand feeling coating based on elastic urethane acrylate and preparation method of UV hand feeling coating

A polyurethane acrylate and elastic polyester technology, which is applied in the field of UV-curable hand-feel coatings, can solve problems such as poor fast curing ability and complicated curing process, and achieve convenient adjustment of coating hand feel, good adhesion, elasticity and flexibility good effect

Active Publication Date: 2015-04-29
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the handle coatings currently on the market have a certain feel, the curing process is often complicated.

Method used

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  • UV hand feeling coating based on elastic urethane acrylate and preparation method of UV hand feeling coating
  • UV hand feeling coating based on elastic urethane acrylate and preparation method of UV hand feeling coating
  • UV hand feeling coating based on elastic urethane acrylate and preparation method of UV hand feeling coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of preparation based on the UV feel paint of elastic polyurethane acrylate is as follows:

[0034] The structural formula of described elastic polyester diol is:

[0035]

[0036] Pretreatment of raw materials: vacuumize the elastic polyester diol at 110°C to remove moisture; and vacuumize pentaerythritol triacrylate and isophorone diisocyanate for several hours at 70°C Processing, the hydroxyethyl methacrylate containing 2,6-di-tert-butyl-4-methylphenol, hydroquinone and dibutyltin dilaurate is vacuum-dried in a vacuum oven;

[0037] Add 1.3g of pretreated isophorone diisocyanate and 2.5g of pentaerythritol triacrylate into a three-necked flask equipped with a thermometer, a reflux condenser, and a stirrer, and stir and mix evenly at 50°C. In the same way, within 1 hour, 5g of elastic polyester diol was added to the three-necked bottle in batches, and then the temperature was raised to 65°C. Measure the content of isocyanate after 1 hour of reaction, when t...

Embodiment 2

[0042] The structural formula of described elastic polyester diol is:

[0043]

[0044] Pretreatment of raw materials: vacuumize the elastic polyester diol at 110°C to remove moisture; reduce trimethylolpropane triacrylate and isophorone diisocyanate for several hours at 70°C Pressure vacuum treatment, in a vacuum drying oven, vacuumize the hydroxyethyl methacrylate containing bis(3,5-di-tert-butyl-4-hydroxyphenyl) sulfide, p-hydroxyanisole and stannous octoate dry;

[0045] Add 1.5g of pretreated isophorone diisocyanate and 2g of trimethylolpropane triacrylate into a three-neck flask equipped with a thermometer, a reflux condenser, and a stirrer, and stir and mix evenly at 50°C, then use In the way of adding multiple times, add 5.3g of elastic polyester diol to the three-necked bottle in batches within 1 hour, and then raise the temperature to 65°C. Measure the content of isocyanate after 1 hour of reaction, when the content of isocyanate reaches the theoretical value, it ...

Embodiment 3

[0050] The structural formula of described elastic polyester diol is:

[0051]

[0052] Pretreatment of raw materials: vacuumize the elastic polyester diol at 120°C to remove moisture; trimethylolpropane triacrylate, pentaerythritol triacrylate, dipentaerythritol pentaacrylate at 80°C The mixture and isophorone diisocyanate are subjected to vacuum treatment under reduced pressure for several hours. -4-hydroxyphenyl) sulfide, hydroquinone and hydroxyethyl methacrylate of dibutyltin dilaurate are vacuum-dried;

[0053] Add 1.7g of pretreated isophorone diisocyanate and 1.2g of p-trimethylolpropane triacrylate, pentaerythritol triacrylate, dipentaerythritol pentaacrylate in a three-neck flask equipped with a thermometer, reflux condenser, and stirrer For the mixture of esters, stir and mix evenly at 55°C, add 5.7g of elastic polyester diol to the three-necked bottle in batches within 2 hours by adding multiple times, and then raise the temperature to 70°C . After reacting f...

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Abstract

The invention relates to a UV-curing hand feeling coating based on elastic urethane acrylate and a preparation method of the UV hand feeling coating. The UV-curing hand feeling coating comprises the following components in percentage by weight: 30-35% of elastic urethane acrylate, 5-8% of matt powder, 8-10% of a photoinitiator, 35-40% of diacetone alcohol, 0.2-0.5% of a levelling agent, 0.8-1.5% of a hand feeling auxiliary, and 5-21% of monomer. The UV-curing hand feeling coating has the following benefits: 1), elastic polyester glycol is used in the preparation process of urethane acrylate, the main chain of the elastic polyester glycol is a C-C straight chain and main chain molecules are coiled, and after film formation through crosslinking, the coiled molecule can be stretched and shows elasticity under the effect of external force, so that the elasticity and flexibility of the UV-curing hand feeling coating are excellent; 2), a preparation method is simple, the prepared coating is good in adhesive force, and high in curing speed, and the hand feeling of the coating can be adjusted conveniently.

Description

technical field [0001] The invention relates to a UV-curable coating, in particular to a UV-curable handle coating based on elastic polyurethane acrylate. Background technique [0002] Photocurable coatings, also known as photosensitive coatings, are mainly composed of photosensitive resins, photosensitizers (photoinitiators) and diluents. At the same time, some additives are added, such as heat stabilizers, and pigments and fillers are added when preparing colored paints. Photocuring refers to the process of cross-linking and polymerizing oligomers and monomers in liquid to form solid products under the action of ultraviolet light or visible light. Ultraviolet curing (UV) is a branch of radiation curing technology, which is mainly used in the preparation of light-curing coatings. Compared with general curing methods, UV curing has the following advantages: ①The curing time is short, the speed is fast, and it can be cured within a few seconds, and can be applied to occasion...

Claims

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Application Information

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IPC IPC(8): C09D175/16C09D7/12C08G18/75C08G18/67C08G18/42C08G18/10
CPCC08G18/10C08G18/42C08G18/672C08G18/755C08K5/07C09D5/08C09D7/40C09D7/63C09D175/16
Inventor 刘治田代梦琴金毕青张旗王成王善
Owner WUHAN INSTITUTE OF TECHNOLOGY
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