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    • 10. 发明专利
    • Method for producing epichlorohydrin
    • 生产苯丙醇的方法
    • JP2014065734A
    • 2014-04-17
    • JP2013261013
    • 2013-12-18
    • Solvay (Sa)ソルヴェイ(ソシエテ アノニム)
    • GILBEAU PATRICKPHILIPPE KRAFFT
    • C07D301/26C07D303/08
    • C07D301/24
    • PROBLEM TO BE SOLVED: To provide a method for producing epichlorohydrin from dichloropropanol, which maintains high epichlorohydrin selectivity without necessitating an operation, such as stripping of a reaction medium or extraction, for taking out epichlorohydrin immediately after formation.SOLUTION: The method for producing epichlorohydrin comprises: a) a step of reacting a mixture of 1,3-dichloro-2-propanol and 2,3-dichloro-1-propanol, in which the content of the 1,3-dichloro-2-propanol is 10 wt.% or more, with at least one basic compound in a liquid reaction medium in order to form epichlorohydrin and a salt; and b) a step of subjecting at least a portion of the liquid reaction medium of the step a) to a settling operation in which at least a first fraction containing most of the epichlorohydrin that was contained in a part of the reaction medium of the step a) before the settling operation and a second fraction containing most of the salt that was contained in a part of the reaction medium of the step a) before the settling operation are separated.
    • 要解决的问题:提供一种从二氯丙醇制备表氯醇的方法,其在不需要操作的情况下保持高的表氯醇选择性,例如汽提反应介质或萃取,以便在形成后立即取出表氯醇。解决方案:制备表氯醇的方法 包括:a)使1,3-二氯-2-丙醇和2,3-二氯-1-丙醇的混合物反应,其中1,3-二氯-2-丙醇的含量为10重量% %以上,与液体反应介质中的至少一种碱性化合物形成表氯醇和盐; 和b)使步骤a)的至少一部分液体反应介质进行沉淀操作的步骤,其中至少含有在步骤(a)的反应介质的一部分中包含的大部分表氯醇的第一级分, a)在沉降操作之前和在沉降操作之前分离包含在步骤a)的反应介质的一部分中的大部分盐的第二级分。