| 摘要 |
PURPOSE:To safely obtain the subject compound good in rapid settability and storage stability, useful for e.g. a reactive diluent, by esterification between a polyhydric alcohol and (meth)acrylic acid compound in the presence of an acid catalyst in an organic solvent and by neutralizing the product followed by amine treatment. CONSTITUTION:A reaction is conducted at 85-92 deg.C under reflux for about 13 hr in an organic solvent (e.g. cyclohexane) in the presence of an acid catalyst (e.g. p-toluenesulfonic acid) between (A) a polyhydric alcohol such as pentaerythritol, dipentaerythritol, trimethylolpropane, glycerin or polyglycerin and (B) (meth)acrylic acid or a derivative therefrom (e.g. a (meth)acrylic lower alkyl ester). After the reaction, a 20% aqueous NaOH solution is gradually added to the reaction product solution under agitation to make a neutralization followed by treatment with an amine (e.g. triethylenediamine), thus affording the objective polyfunctional (meth)acrylate useful as e.g. a reactive diluent for ultraviolet light-curing resins. |
