反应 #1375809

反应方程式

ammonia

urea

diethylenetriamine

Ammonia

→

2-aminoethyl imidazolidinone

反应条件

后处理

1. 1
   workup.ADDITIONwere charged
2. 2
   workup.ADDITIONThe reaction mix
3. 3
   其他to evolve at about 130° C
4. 4
   温度The temperature was slowly raised to 150° C
5. 5
   其他the remaining ammonia was removed
6. 6
   其他Product yield
7. 7
   其他at 25° C.
8. 8
   workup.DISTILLATIONfurther purified by vacuum distillation

实验过程

In a suitable reactor equipped with agitation and a reflux condenser, 465 parts by weight of urea and 798 parts by weight of diethylenetriamine were charged. The reaction mix was slowly heated to 140° C. Ammonia started to evolve at about 130° C. The temperature was slowly raised to 150° C. As the evolution of ammonia subsided, vacuum was applied and the remaining ammonia was removed. Product yield was approximately 1000 parts by weight. The product had a viscosity of 6000 cps at 25° C. and an MEQ/g of 6.5. (MEQ=milliequivalent weight). Gel phase analysis of the product showed approximately 95% purity. The product can be used as is or further purified by vacuum distillation. The major impurity is unreacted diethylenetriamine.

来源