[EN] A PROCESS FOR THE PREPARATION OF FE(III) CHELATES OF N,N'-DI(2-HYDROXYBENZYL)-ETHYLENEDIAMINE-N,N'-DIACETIC ACID AND ITS DERIVATIVES<br/>[FR] PROCÉDÉ POUR LA PRÉPARATION DE CHÉLATES DE FE(III) DE L'ACIDE N,N'-DI(2-HYDROXYBENZYL)-ÉTHYLÈNEDIAMINE-N,N'-DIACÉTIQUE ET SES DÉRIVÉS
申请人:PRZED PROD CONSULTINGOWE ADOB SP Z O O SP K
公开号:WO2011006763A1
公开(公告)日:2011-01-20
The invention relates to the process for the preparation of iron(lll) chelates of N, N'- di(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid and its derivatives of the formula (I) wherein both R substituents have the same meaning and represent H, C1 -C4 alkyl, CH2OH, SO3M or COOM, and M is a sodium, potassium or ammonium cation, wherein the aqueous solution of a corresponding chelating agent is contacted with metallic iron by the circulation of said aqueous solution through the bed of pieces of metallic iron in a flow reactor while simultaneously blowing air or oxygen through the aqueous solution of the chelating agent in the flow reactor, optionally in the presence of a hydrogen peroxide solution. Chelates of the formula (I) are useful as the components of plant fertilizers.
该发明涉及一种制备铁(III)螯合物N,N'-二(2-羟基苯甲基)乙二胺-N,N'-二乙酸及其衍生物的过程,其化学式为(I),其中两个R取代基具有相同的含义,代表H,C1-C4烷基,CH2OH,SO3M或COOM,M为钠,钾或铵阳离子,其中通过将相应的螯合剂的水溶液通过金属铁的块状床在流动反应器中循环,同时通过在流动反应器中通过螯合剂的水溶液吹送空气或氧气,可选地在过氧化氢溶液的存在下,制备出化学式(I)的螯合物,用作植物肥料的组分。