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1. 发明授权

US4339615A Process for producing resorcinol 失效
标题翻译：生产间苯二酚的方法
公开(公告)号：US4339615A
公开(公告)日：1982-07-13
申请号：US205182
申请日：1980-11-10
申请人： Ichiro Imai , Fujihisa Matsunaga , Hiroaki Nakagawa , Masayasu Isibasi , Tohru Taguchi
发明人： Ichiro Imai , Fujihisa Matsunaga , Hiroaki Nakagawa , Masayasu Isibasi , Tohru Taguchi
IPC分类号： C07C27/00 , C07C37/08 , C07C37/72 , C07C39/08 , C07C67/00
CPC分类号： C07C37/72 , C07C37/08
摘要： In a process for producing resorcinol, which comprises cleaving m-diisopropylbenzene dihydroperoxide in the presence of a water-soluble acid catalyst in a mixed solvent consisting of an aromatic hydrocarbon and acetone, treating the resulting acid cleavage product containing resorcinol with an aqueous solution of a neutral salt under acidic conditions, separating the solvent layer containing resorcinol from the aqueous layer, and recovering resorcinol from the separated solvent layer; the improvement wherein (i) the acid cleavage is carried out while maintaining the weight ratio of the aromatic hydrocarbon to acetone at less than 0.6, and at a time after formation of the acid cleavage product but before the treatment of the cleavage product with the aqueous solution of the neutral salt, the amount of the aromatic hydrocarbon in the mixed solvent is adjusted so that the weight ratio of the aromatic hydrocarbon to acetone in the product is from 0.6 to 1.1, and (ii) the acidic conditions are selected such that the pH of the solvent layer containing resorcinol is 2.5 to 4.
摘要翻译：在制备间苯二酚的方法中，其包括在水溶性酸催化剂存在下，在由芳烃和丙酮组成的混合溶剂中裂解间二异丙基苯二氢过氧化物，用含有间苯二酚的水溶液处理得到的含有间苯二酚的酸裂解产物中性盐在酸性条件下，从水层中分离含有间苯二酚的溶剂层，并从分离的溶剂层回收间苯二酚; 改进之处在于（i）酸性裂解在保持芳族烃与丙酮的重量比小于0.6的同时，并且在形成酸裂解产物之后但在用水溶液处理裂解产物之前进行调节中和盐的溶液，调节混合溶剂中的芳香烃的量，使得产物中芳族烃与丙酮的重量比为0.6〜1.1，（ii）选择酸性条件使得含有间苯二酚的溶剂层的pH为2.5〜4。

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