METHOD OF PRODUCING HIGH FINENESS POLY-ALKYLENE ETHER DIAMINE

摘要

mixing polyalkylene ether acrylonitrile with a metallic catalyst selected from Pt, Pd or Ni; injecting the mixt. with the mixed gas of H2 and ammonia; then hydrogenating in the condition of 30-80 atms. of the mixed gas in the reactor, making the gas pressure higher by 1-10 atms. then the above atm. the front of the injector and at 70-180≦̸C for 30-180 min., Pref. the polyalkylene ether acrylo nitrile is polyethylene acrylo nitrile or polypropylene acrylo nitrile, the pressure ratio of NH4 in the mixd gas in 1/6-1/4. The process reduces the time of reaction and obtains good conversion ration to primary amine and can improve reaction selectivity.