抄録
Dimethylene, dioxyethylene, trioxyethylene and polyoxyethylene (600) N, N, N′, N′-bis-ethylene urethanes were prepared by the reaction of corresponding polyoxyethylene dichloroformates with ethylenimine in aqueous solution using Na2CO3 or (NH4)2CO3 as dehydrochloric acid agent.
It was proved that the yield of these bis-ethylene-urethanes prepared in water was good as shown by determination of the yield by addition compounds prepared from these bis-ethylene-urethanes in aqueous solution and hydrochloric acid, while the yield of bis-ethylene-urethanes isolated as pure products was lower. Preparation of these bis-ethylene-urethanes in water is advantageous, when they are used for cellulose treatment as their aqueous solution.
