[EN] PROCESS FOR THE CONTINUOUS PRODUCTION OF HIGH PURITY PHENOLIC GLYCOL ETHER<br/>[FR] PROCÉDÉ DE FABRICATION EN CONTINU D'ÉTHERS DE GLYCOLS PHÉNOLIQUES DE PURETÉ ÉLEVÉE
申请人:DOW GLOBAL TECHNOLOGIES INC
公开号:WO2009076275A1
公开(公告)日:2009-06-18
Phenolic glycol ethers, e.g., ethylene glycol phenyl ether, are prepared by a continuous, nonaqueous process comprising the steps of (A) contacting under isothermal reactive conditions in a first reactor or reaction zone an alkylene oxide, e.g., ethylene oxide, with (i) a stoichiometric molar excess of a phenolic compound, e.g., phenol, and (ii) a catalytic amount of a base, e.g., sodium hydroxide, homogeneously dispersed throughout the phenolic compound, to form a first intermediate phenolic glycol ether product, (Bj transferring the first intermediate phenolic glycol ether product to a second reactor or reaction zone, and ( C) subjecting the first intermediate phenolic glycol ether product to adiabatic reactive conditions in the second reactor or reaction zone to form a second intermediate phenolic glycol ether product comprising phenolic glycol ether, unreacted phenolic compound, catalyst, water and byproduct glycols. In addition, the mono-/di-product weight ratio can be adjusted by increasing or decreasing the amount of base catalyst employed.
酚醚类化合物,例如乙二醇苯醚,通过连续的非水过程制备,包括以下步骤:(A)在第一反应器或反应区域中,在等温反应条件下接触烷基氧化物,例如乙氧基,与(i)过量的苯酚化合物,例如苯酚,和(ii)催化剂量的碱,例如氢氧化钠,均匀分散在苯酚中,以形成第一中间酚醚产物;(B)将第一中间酚醚产物转移至第二反应器或反应区域;(C)在第二反应器或反应区域中,对第一中间酚醚产物进行绝热反应条件,以形成第二中间酚醚产物,其中包括酚醚,未反应的苯酚化合物,催化剂,水和副产物醇。此外,可以通过增加或减少使用的碱催化剂量来调整单/双产物重量比。