公开(公告)号：US20170152215A1

公开(公告)日：2017-06-01

申请号：US15355103

申请日：2016-11-18

申请人： NAN YA PLASTICS CORPORATION

发明人： Te-Chao LIAO ,  Jung-Jen CHUANG ,  Zhi-Ming HUANG ,  Shun-Chi CHEN ,  Tzu-Chiang LIN

IPC分类号： C07C253/18

CPC分类号： C07C253/18 ,  C07C253/30 ,  C07C255/24

摘要： 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°C to prepare N,N′-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.

公开(公告)号：US20170152216A1

公开(公告)日：2017-06-01

申请号：US15355108

申请日：2016-11-18

申请人： NAN YA PLASTICS CORPORATION

发明人： Te-Chao LIAO ,  Jung-Jen CHUANG ,  Zhi-Ming HUANG ,  Shun-Chi CHEN ,  Tzu-Chiang LIN

IPC分类号： C07C253/18

CPC分类号： C07C253/18 ,  C07C253/30 ,  C07C255/24

摘要： 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′-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.

公开(公告)号：US20170152212A1

公开(公告)日：2017-06-01

申请号：US15355111

申请日：2016-11-18

申请人： NAN YA PLASTICS CORPORATION

发明人： Te-Chao LIAO ,  Jung-Jen CHUANG ,  Zhi-Ming HUANG ,  Shun-Chi CHEN ,  Tzu-Chiang LIN

IPC分类号： C07C209/68

CPC分类号： C07C209/68 ,  C07C209/48 ,  C07C211/14

摘要： 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.