PROCESS FOR THE PREPARATION OF POLYAMINO SUCCINIC ACIDS AND DERIVATIVES THEREOF

摘要

A process for preparing polyamino monosuccinic acids, salts or chelates thereof by: (a) reacting a maleic or fumaric acid ester or mixtures thereof with a polyamino compound in a primary alcohol as a solvent; (b) hydrolyzing the product obtained in step (a); and (c) separating the primary alcohol. The use of a primary alcohol as the solvent results in a markedly purer polyamino monosuccinic acid product and simpler reaction conditions than when the solvent is a secondary or tertiary alcohol.