Novel ultraviolet-cured resin having triazine ring and preparation method thereof
A technology for curing resin and triazine ring, applied in the field of novel UV-curable resin containing triazine ring and its preparation, can solve the problem of poor weather resistance and yellowing, insufficient hardness and flexibility, and expensive finished paint products and other problems, to achieve the effect of high hardness, good heat resistance and low viscosity
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Embodiment 1
[0031] 1. In a clean and dry reactor, put 180 kg of difunctional isocyanurate acrylate (ICDA) containing triazine ring, 150 kg of pentaerythritol triacrylate (PETA), polyhexyl dipentaerythritol pentaacrylate (DPHA) 200 kg, 0.6 kg of p-methoxyphenol, 0.1 kg of stannous octoate and 80 kg of butyl acetate, then slowly raise the temperature to 60°C in about 1 hour;
[0032] 2. Put 100 kg of isophorone diisocyanate (IPDI) into a clean and dry high-level tank, and put it into the reaction kettle at a constant speed for 1 hour, during which the temperature is controlled at 55°C;
[0033] 3. After the dropwise addition is completed, keep warm for 1 hour, then raise the temperature to 90°C for 0.5 hours, and keep warm for 3 hours;
[0034] 4. Sampling test, when the isocyanate content (NCO%) is less than 0.5%, and the viscosity is 100mPa·s / 25°C, then react at constant temperature for 3 hours;
[0035] 5. Add 100 kg of hexahydrophthalimide hydroxyethyl acrylate (HHPIEA), 100 kg of etho...
Embodiment 2
[0039] 1. In a clean and dry reaction kettle, put 150 kg of difunctional isocyanurate acrylate (ICDA) containing triazine ring, 200 kg of pentaerythritol triacrylate (PETA), polyhexyl dipentaerythritol pentaacrylate (DPHA) 180 kg, 0.7 kg of hydroquinone, 0.08 kg of dibutyltin dilaurate and 70 kg of butyl acetate, and then slowly increase the temperature to 55 °C in about 1 hour;
[0040] 2. Put 90 kg of isophorone diisocyanate (IPDI) into a clean and dry high-level tank, and put it into the reaction kettle at a constant speed for 2 hours, during which the temperature is controlled at 55°C;
[0041] 3. After the dropwise addition is completed, keep warm for another 2 hours, then raise the temperature to 80°C for 0.5 hours, and keep warm for another 5 hours;
[0042] 4. Sampling test, when the isocyanate content (NCO%) is less than 0.5%, and the viscosity is 100mPa·s / 25°C, then react at constant temperature for 3 hours;
[0043] 5. Add 100 kg of hexahydrophthalimide hydroxyethy...
Embodiment 3
[0047] 1. In a clean and dry reactor, put 220 kg of difunctional isocyanurate acrylate (ICDA) containing triazine ring, 200 kg of pentaerythritol triacrylate (PETA), polyhexyl dipentaerythritol pentaacrylate (DPHA) 230 kg, 0.8 kg of copper sulfate, 0.12 kg of stannous octoate and 80 kg of butyl acetate, and then slowly increase the temperature to 50°C in about 1 hour;
[0048] 2. Put 100 kg of isophorone diisocyanate (IPDI) into a clean and dry high-level tank, and put it into the reaction kettle at a constant speed for 1.5 hours, during which the temperature is controlled at 58°C;
[0049] 3. After the dropwise addition is completed, keep warm for 1-2 hours, then raise the temperature to 86°C for 0.5 hours, and keep warm for 4 hours;
[0050] 4. Sampling test, when the isocyanate content (NCO%) is less than 0.5%, and the viscosity is 150mPa·s / 25°C, then react at constant temperature for 3 hours;
[0051] 5. Add 120 kg of hexahydrophthalimide hydroxyethyl acrylate (HHPIEA), 1...
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