One-step-feeding method for preparing phthalic-anhydride-modified epoxy acrylate, and formula thereof
A technology of epoxy acrylate and phthalic anhydride, which is applied in the field of preparing phthalic anhydride-modified epoxy acrylate by one-step feeding method, which can solve the problems of long-term contact with human body, pollution of the working environment, and difficult feeding methods, so as to improve the working environment and optimize the process flow , to solve the effect of acid value difficult to drop
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[0029] In the preferred embodiment of the present invention, a kind of preparation method and formula for preparing phthalic anhydride modified epoxy acrylate are provided, and its preparation method comprises the following steps:
[0030] Step 1) Feeding, choose 32.45% epoxy resin 128 by weight percentage, 24.68% phthalic anhydride, 22.47% reactive diluent tripropylene glycol diacrylate, 20.05% hydroxyethyl acrylate, 0.204% catalyst triethylene Amine, 0.063% inhibitor p-hydroxyanisole, 0.083% antioxidant 2,6-di-tert-butyl-4-methylphenol; all raw materials except reactive diluent tripropylene glycol diacrylate Put it into the reactor at one time, seal all the valves and vacuumize the reactor after feeding, so that the inside of the reactor is in a vacuum state, and then close the vacuum valve;
[0031] Step 2) Stop vacuuming, quickly feed nitrogen, make the reactor full of nitrogen, until the reactor is in a state of normal pressure, adjust the nitrogen flow to 50-70L / hr, open...
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