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A kind of polyurethane modified acrylate uv resin and preparation method thereof

A polyurethane modification and acrylate technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve problems such as poor adhesion and toughness, achieve smooth surfaces, expand applications, improve wear resistance and flexibility

Active Publication Date: 2022-03-15
SHENZHEN FEIYANG JUNYAN TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the coating film of epoxy acrylic UV resin has high hardness, its adhesion and toughness are relatively poor, which will be greatly limited in actual use. Therefore, the present invention provides a polyurethane-modified acrylate UV resin. The coating film has good adhesion and wear resistance, and the toughness and hardness are adjustable

Method used

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  • A kind of polyurethane modified acrylate uv resin and preparation method thereof
  • A kind of polyurethane modified acrylate uv resin and preparation method thereof
  • A kind of polyurethane modified acrylate uv resin and preparation method thereof

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preparation example Construction

[0044] The second aspect of the present invention provides a kind of preparation method of described polyurethane modified acrylate UV resin, comprises the steps:

[0045] (1) Add diisocyanate into the reaction flask, heat up to 50-70°C, add dihydric alcohol dropwise, react, and cool down to obtain product A;

[0046] (2) Under the condition of avoiding light, add the acrylate monomer into the reaction bottle, raise the temperature, then slowly add ethanolamine dropwise, react, and cool down to obtain the product B;

[0047] (3) Under the protection of argon, under the condition of avoiding light, add the product B into the reaction bottle, raise the temperature to 50-70° C., add the product A dropwise, react, and cool down to obtain the polyurethane modified acrylate UV resin.

[0048] Preferably, the preparation method of described polyurethane modified acrylate UV resin, comprises the steps:

[0049] (1) Add diisocyanate into the reaction flask, raise the temperature to 50...

Embodiment 1

[0066] Embodiment 1 provides a kind of polyurethane modified acrylate UV resin, and its structural formula is as follows:

[0067]

[0068] R is no 2 about 17; R 1 for R 2 , R 3 both Among them, R 4 is hydrogen; R 5 for m 2 is 3;

[0069] The preparation method of described polyurethane modified acrylate UV resin is as follows:

[0070] (1) Under the protection of argon, add 348.3g of diisocyanate into the reaction flask, raise the temperature to 60-65°C, stir, add 1000g of dihydric alcohol dropwise, continue the reaction for 4.5h after the dropwise addition, stop the reaction, and cool down to obtain the product A1, 1348.3g;

[0071] (2) Under the condition of avoiding light, add 600.7g of acrylate monomer into the reaction bottle, raise the temperature to 50°C, stir, then slowly add 61g of ethanolamine dropwise, after the dropwise addition, continue to keep warm for 2 days, and there is no raw material peak in chromatographic detection Afterwards, the rea...

Embodiment 2

[0075] Embodiment 2 provides a kind of polyurethane modified acrylate UV resin, and its structural formula is as follows:

[0076]

[0077] R is no 2 about 17; R 1 for R 2 , R 3 both Among them, R 6 for

[0078] The preparation method of described polyurethane modified acrylate UV resin is as follows:

[0079] (1) Under the protection of argon, add 348.3g of diisocyanate into the reaction flask, raise the temperature to 60-65°C, stir, add 1000g of dihydric alcohol dropwise, continue the reaction for 4.5h after the dropwise addition, stop the reaction, and cool down to obtain the product A2, 1348.3g;

[0080] (2) Under the condition of avoiding light, add 592.6g of acrylate monomer into the reaction bottle, raise the temperature to 50°C, stir, then slowly add 61g of ethanolamine dropwise, after the dropwise addition, continue to keep warm for 2 days, and there is no raw material peak in chromatographic detection Afterwards, the reaction was stopped, and the te...

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Abstract

The present invention relates to the technical field related to UV resins. More specifically, the present invention provides a polyurethane modified acrylate UV resin and a preparation method thereof. The preparation method includes the following steps: adding diisocyanate into a reaction bottle and heating 50~70℃, add dihydric alcohol dropwise, react, cool down to get product A; under dark conditions, add acrylate monomer into the reaction bottle, heat up, then slowly add ethanolamine dropwise, react, cool down to get product B; argon Under the condition of protecting and avoiding light, add the product B into the reaction bottle, raise the temperature to 50-70° C., add the product A dropwise, react, and lower the temperature to obtain the polyurethane modified acrylate UV resin. The polyurethane-modified acrylate UV resin provided by the present invention solves the problems of poor adhesion and toughness of traditional UV-cured coatings, can better maintain the hardness and adhesion of the obtained coating, and improves wear resistance and flexibility. In addition, the obtained cured The appearance of the paint film is smooth, colorless, transparent and full.

Description

technical field [0001] The invention relates to the technical field related to UV resins, more specifically, the invention provides a polyurethane-modified acrylate UV resin and a preparation method thereof. Background technique [0002] UV curing is a chemical method for curing liquid materials. Coatings cured by UV light are called UV curing coatings, which are widely used to paint wood products, alloys, pre-assembled products, and plastic products. This kind of coating has unique advantages, such as fast curing speed, which can meet the requirements of fast curing occasions; low environmental impact, can reach 100% solid content, no VOC emissions; low energy consumption, only radiant energy, no need to heat to remove water or organic solvent. [0003] UV resin is the main film-forming substance of UV-curable coatings, which has a key impact on the performance of coating films. The structure, functionality, activity and shrinkage of UV resin determine the curing speed, h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/83C08G18/76C08G18/66C08G18/48C08G18/32C09D175/16
CPCC08G18/831C08G18/7614C08G18/6688C08G18/4825C08G18/3271C09D175/16
Inventor 徐涛龙绪俭熊东路肖增钧易松杨轩李斌仁鲁晓东
Owner SHENZHEN FEIYANG JUNYAN TECH DEV
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