METHOD FOR PREPARING N,N'-BIS(3-AMINOPROPYL)-1,2-ETHYLENEDIAMINE
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Nov 18, 2016
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Nov 26, 2015
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A method for preparing N,N′-bis(3-aminopropyl)-1,2-ethylenediamine uses a glycol ether based solution, such as a solution containing dipropylene glycol dimethyl ether (PM) to replace the traditionally used monol-based solvents, and performs hydrogenation in the presence of a Co—Mn—Al catalyst. The method improves the yield of N,N′-bis(3-aminopropyl)-1,2-ethylenediamine to 98.85-99.49% and effectively suppresses generation of by-products.
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