A kind of preparation method of nonylphenol polyoxyethylene ether acrylate
A technology of nonylphenol polyoxyethylene ether acrylate and nonylphenol polyoxyethylene ether, which is applied in the field of fine chemical preparation, can solve the problems of high cost of nonylphenol polyoxyethylene ether acrylate, achieve short reaction cycle, The effect of high production efficiency and easy control
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Embodiment 1
[0032] The embodiment of the present invention provides a kind of preparation method of nonylphenol polyoxyethylene ether acrylate, the preparation method of described nonylphenol polyoxyethylene ether acrylate comprises the steps:
[0033] Step 1: Put nonylphenol polyoxyethylene ether, acrylic acid, solvent, catalyst, first polymerization inhibitor and antioxidant into a four-necked flask in sequence, and the four-necked flask is equipped with a thermometer, a water separator, a serpentine Condenser tube and stirring paddle are used to control the temperature and pressure of the reaction system and to make the reaction system mix evenly and improve the reaction conversion rate.
[0034] Step 2: Heating the reaction system in the four-neck flask to 50°C-70°C in an oil bath and vacuuming until the pressure is maintained at -0.04MPa~-0.06MPa for 20min, while introducing protective gas and fully stirring The reaction system.
[0035] In step 2, the protective gas provides protec...
Embodiment 2
[0053] as attached figure 1 As shown, the embodiment of the present invention provides a preparation method of nonylphenol polyoxyethylene ether acrylate, the specific steps of the preparation method are as follows:
[0054] Step 1: 160.96g trinonylphenol polyoxyethylene ether, 32.75g acrylic acid, 132.0g toluene, 3.30g p-toluenesulfonic acid, 0.50g copper sulfate pentahydrate, 0.50g tetrakis[β-(3,5-di Tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester is put into the 500ml four-neck flask that thermometer, water separator, serpentine condenser, stirring paddle are housed, and add 20g toluene at water separator;
[0055] Step 2: Turn on the oil bath heating device, heat the reaction system in the four-necked flask to 50°C in an oil bath and vacuumize until the pressure is maintained at -0.06MPa for 20min, while introducing air and fully stirring the reaction system;
[0056] Step 3: Continue to heat the reaction system to 60°C, keep the pressure of the reactio...
Embodiment 3
[0064] as attached figure 1 As shown, the embodiment of the present invention provides a preparation method of nonylphenol polyoxyethylene ether acrylate, the specific steps of the preparation method are as follows:
[0065] Step 1: 161.0g trinonylphenol polyoxyethylene ether, 60.07g acrylic acid, 110.5g cyclohexane, 0.017g concentrated sulfuric acid, 0.011g p-hydroxyanisole, 0.44g bis(2,4-di-tert-butyl Base phenol) pentaerythritol diphosphite is put into the 500ml four-necked flask that thermometer, water separator, serpentine condenser, stirring paddle are housed, and add 20g toluene in water separator;
[0066] Step 2: Turn on the oil bath heating device, heat the reaction system in the four-neck flask to 60°C in an oil bath and vacuumize until the pressure is maintained at -0.04MPa for 20min, while introducing air and fully stirring the reaction system;
[0067] Step 3: Continue to heat the reaction system to 80°C, keep the pressure of the reaction system at -0.04MPa, he...
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