Nan Ya Plastics Corporation

Shun-Chi Chen

Te-Chao Liao

Jung-Jen Chuang

Zhi-Ming Huang

Tzu-Chiang Lin

A method for preparing N,N'-bis(2-cyanoethyl-1,2-ethylenediamine involves using glycol ether as a catalyst for synthesis reaction in which ethylenediamine and acrylonitrile at a molar ratio of 1:1.9-2.1 are reactant that react at 20-70&#xb0;C to prepare N,N&#x2032;-bis(2-cyanoethyl)-1,2-ethylenediamine; the method improves the yield to 98.15-98.98%; and the used glycol ether may be filtered and recycled, thereby saving costs and reducing environmental pollution.

Method for preparing N,N'-bis(2-cyanoethyl)-1,2-ethylenediamine

A method for preparing N,N'-bis(2-cyanoethyl)-1,2-ethylenediamine involves using strongly acidic cation exchange resin as a catalyst for synthesis, and is advantageous for not only eliminating the need of distillation for purification and thereby reducing reaction time, but also improving the yield of N,N&#x2032;-bis(2-cyanoethyl)-1,2-ethylenediamine to 97.70-98.08%; and the method benefits simplified process and reduced costs and helps to save water significantly, thereby minimizing environmental pollution.

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Taipei, Taiwan

Shun-Chi Chen