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Ultraviolet-cured polyurethane acrylate photosensitive resin and its preparation method and application

A polyurethane acrylate, photosensitive resin technology, applied in polyurea/polyurethane coatings, polyurea/polyurethane adhesives, applications, etc., can solve the problem of poor yellowing resistance and chemical resistance, poor mechanical properties, slow curing rate and other problems, to achieve the effect of improving hydrophobicity and chemical resistance, reducing synthesis cost and fast curing rate

Active Publication Date: 2019-09-17
国科广化(南雄)新材料研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the shortcomings of existing polyurethane acrylates such as easy aging, poor yellowing resistance and chemical corrosion resistance, slow curing rate, and poor mechanical properties, the primary purpose of the present invention is to provide a UV-cured polyurethane acrylate Preparation method of photosensitive resin

Method used

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  • Ultraviolet-cured polyurethane acrylate photosensitive resin and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A kind of urethane acrylate photosensitive resin cured by ultraviolet light is prepared by the following method:

[0043] 1. Mix 15.8g (0.053mol) of cardanol, 11.3g (0.102mol) of 3-chloro-1,2-propanediol and 35.1ml (0.602mol) of absolute ethanol, and maintain the temperature at 75 under magnetic stirring ℃, dropwise add 22.2g mass fraction of 20% sodium hydroxide (0.111mol), dropwise time is 1.5h, after dropwise addition, react for 20h; cool, filter the precipitated salt, wash with distilled water, reduce pressure at 60°C Ethanol and water are distilled off to synthesize cardanol etherified glycol (I);

[0044] 2. Mix 5.9g (0.050mol) of m-xylylene diisocyanate and 0.08g of dibutyltin dilaurate, feed nitrogen gas, keep the temperature at 5°C, and slowly add it dropwise to the mixture containing 15.9g (0.042mol) of cardanol etherified diol (I) in 15ml (0.195mol) of DMF, the dropwise addition time is 1h, after the dropwise addition is completed, the temperature is raised to...

Embodiment 2

[0048] A kind of urethane acrylate photosensitive resin cured by ultraviolet light is prepared by the following method:

[0049] 1. Mix 15.8g (0.053mol) of cardanol, 10.8g (0.098mol) of 3-chloro-1,2-propanediol and 38.4ml (0.659mol) of absolute ethanol, and maintain the temperature at 65 ℃, dropwise add 28.1g mass fraction of 15% sodium hydroxide (0.105mol), dropwise time is 1.0h, after dropwise addition, react for 18h; cool, filter the precipitated salt, wash with distilled water, reduce pressure at 65°C Ethanol and water are distilled off to synthesize cardanol etherified dihydric alcohol (I).

[0050] 2. Mix 12.5g (0.050mol) of diphenylmethylene diisocyanate and 0.08g drop of stannous octoate, feed nitrogen gas, keep the temperature at 0°C, and slowly add dropwise to the solution containing 13.5 17.9g (0.048mol) of cardanol etherified diol (I) in ml (0.175mol) of DMF, the dropwise addition time is 2h. g (0.005mol) of cardanol, the time of dropping is 0.5h, after the dropw...

Embodiment 3

[0054] A kind of urethane acrylate photosensitive resin cured by ultraviolet light is prepared by the following method:

[0055] 1. Mix 15.8g (0.053mol) of cardanol, 12.0g (0.109mol) of 3-chloro-1,2-propanediol and 33.2ml (0.569mol) of absolute ethanol, and maintain the temperature at 70 under magnetic stirring ℃, dropwise add 20.0g mass fraction of 25% sodium hydroxide (0.125mol), dropwise time is 0.5h, after dropwise addition, react for 15h; cool, filter the precipitated salt, wash with distilled water, reduce pressure at 70°C Ethanol and water are distilled off to synthesize cardanol etherified dihydric alcohol (I).

[0056] 2. Mix 13.1g (0.050mol) of dimethyl diphenylmethane diisocyanate and 0.08g drop of di(dodecylsulfide) dibutyltin, pass in nitrogen, maintain the temperature at 10°C, and stir it magnetically Slowly add dropwise to the cardanol etherified glycol (I) of 16.9g (0.045mol) that contains 15.4ml (0.200mol) DMF, the time of adding is 1.5h, after dropping, the ...

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Abstract

The invention discloses UV-curable polyurethane acrylate photosensitive resin and its preparation method and use. The preparation method of the photosensitive resin comprises that cardanol is modified to form cardanol etherified diol, the cardanol etherified diol and diisocyanate undergo a reaction so that the cardanol is terminated and polyurethane is prepared, the unsaturated double-bond group of the polyurethane molecule is epoxidized, and the epoxidized group and (methyl) acrylic acid undergo a reaction to produce the UV-curable polyurethane acrylate photosensitive resin. The preparation method is novel, is simple and is easy to control. The product has adjustable viscosity and has high active group content. Through use of the cardanol group in the UV-curable polyurethane acrylate photosensitive resin, the hydrophobicity and chemical agent resistance of the photosensitive resin are improved and the flexibility of the cured body after curing is improved. The photosensitive resin can be used in the fields of UV cured coatings, ink and adhesives.

Description

technical field [0001] The invention belongs to the field of photocurable polymers, and in particular relates to an ultraviolet-cured polyurethane acrylate photosensitive resin, a preparation method and application thereof. Background technique [0002] Ultraviolet curing (UV curing) has the advantages of fast curing speed, environmental friendliness, energy saving, low cost, and can be coated on various substrates. It has a wide range of applications in many fields such as adhesives, inks, and coatings. [0003] The main component of the UV curing system is a photosensitive resin containing active groups, which plays an important role in the physical and chemical properties of the consolidated body after UV curing. Urethane acrylate is an important type of photosensitive resin with the most product brands at present. It is an oligomer synthesized by polyisocyanate and long-chain diols. It is widely used in the fields of photocurable coatings and inks. Oxyacrylate. [0004...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/86C08G18/80C08G18/67C08G18/10C09D175/14C09D11/101C09D11/102C09J175/14
Inventor 庞浩马哲廖兵黄健年福伟黄浩黄福仁
Owner 国科广化(南雄)新材料研究院有限公司
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