| 摘要 |
PURPOSE:To prepare the titled compound useful as a raw material or a modifying agent of polyurethane resin, etc., in high yield, in one step, suppressing the production of tarry material, by reacting xylylenediamine with a nitrous acid salt in the presence of a specific amount of water and a specific amount of a mineral acid. CONSTITUTION:High-purity xylylene glycol can be produced easily, by (1) mixinig 1mol of xylylenediamine, e.g. m- or p-xylylenediamine and a nitrous acid salt with 2.04-2.50 g-equivalent of hydrochloric acid or sulfuric acid at 0-100 deg.C under agitation, (2) adding >=8pts.wt. of water, based on 1pt.wt. of the xylylenediamine, to the system, (3) reacting the components at >=70 deg.C for 20min -5hr under normal pressure, (4) neutralizing the reaction mixture with an alkali after the completion of the reaction, and (5) separating the xylylene glycol from the product by conventional method. The molar ratio of the nitrous acid group/ xylylenediamine is preferably 2.0-2.5.
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