| 摘要 |
PURPOSE:To provide the subject preparation process whereby a mixture of sulfurized alkaline earth metal salts of a salicyclic acid and a phenol with a good hue can be obtained, and nonturbid unreacted phenol can be recovered. CONSTITUTION:The process comprising reacting a mixture comprising a phenol, a dihydric alcohol and an alkaline earth metal reagent, reacting the product with carbon dioxide, adding a dihydric alcohol and elementary sulfur to the obtained product, and subjecting the entire mixture to a sulfurization reaction consists of performing the sulfurization reaction at 160 deg.C or above in such a way that the reaction is effected in a superatmospheric open system, and the amount of the dihydric alcohol added is 2.0mol or above per mol of the alkaline earth metal reagent or that the reaction is effected in an atmospheric open system, and the amount of the dihydric alcohol added is 0.5mol or above per mol of the alkaline earth metal reagent. |
