| abstract |
A method for synthesizing methacryloyloxyethyltrimethylammonium chloride, the steps are 1. dissolving a quaternary ammonium salt in alcohol, adding hydroxide, heating under reflux for reaction, saving a supernatant for use, and activating the The good MOFs are immersed in the supernatant and left to stand and dry to obtain a catalyst; 2. Using methyl methacrylate and N,N-dimethylaminoethanol as raw materials, adding the above catalyst and polymerization inhibitor, stirring evenly and carrying out reaction; three, after the reaction is completed, the unreacted methyl methacrylate, N,N-dimethylaminoethanol and by-product are removed by vacuum distillation, and the MOFs supported quaternary ammonium base catalyst is removed, and the filtrate is concentrated and cooled to carry out crystallization, Obtain crystals; 4. Dissolve the crystals in water, then carry out quaternization reaction with methyl chloride to obtain an aqueous solution, evaporate the water in the aqueous solution under reduced pressure, and vacuum dry to obtain methacryloyloxyethyltrimethylammonium chloride . Compared with the prior art, the present application can improve the reaction yield and facilitate industrial production. |