| 摘要 |
PURPOSE:To obtain the subject compound from inexpensive raw materials by one process and at a low cost by reacting acrylic acid with a specific aliphatic carboxylic acid ethyl ester in the presence of water and an acid as a catalyst. CONSTITUTION:Acrylic acid or methacrylic acid is reacted with a 1-4C aliphatic carboxylic acid ethyl ester, especially preferably ethyl acetate, as a raw material in the presence of an acid as a catalyst and water at 15-150 deg.C, especially 50-120 deg.C, to obtain the objective compound. A cation exchange resin, a mineral acid or an organic acid is employed as the acid catalyst. The raw materials are used preferably in a (meth)acrylic acid/ethyl carboxylate molar ratio of 1:0.5-2. The amount of the added water is preferably 1-10wt.%, especially 2-8wt.%, as the wt.% of the water based on the reaction solution (the weight of the water/the total weight of the reaction solution and water). |
