会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 79. 发明专利
    • PRODUCTION OF ACYCLIC ETHYLENEAMINE
    • JPH02172953A
    • 1990-07-04
    • JP32764588
    • 1988-12-27
    • TOSOH CORP
    • HARA YASUSHISUZUKI NOBUMASAITO YUKIOSEKIZAWA KAZUHIKO
    • B01J23/22C07C209/16C07C211/13
    • PURPOSE:To produce the subject compound containing larger number of ethylene chains than the raw materials, in high yield at a low cost by using a catalyst produced by supporting a niobium oxide mainly on the outer surface of a carrier or thereabout and using ammonia and/or ethyleneamine and ethanolamine as raw materials. CONSTITUTION:An acyclic ethyleneamine having especially high acyclization ratio and preferable from industrial viewpoint can be produced by reacting ammonia and/or ethyleneamine with ethanolamine at usually 200-400 deg.C, preferably 240-350 deg.C preferably in liquid phase in the presence of a catalyst produced by supporting a niobium oxide mainly on the outer surface of the carrier or thereabout in a state that >=90%of the total niobium oxide in the catalyst is present in a region extending from the outer surface of the carrier to the depth of 500mum. The number of ethylene chains in the produced acyclic ethyleneamine is larger than that of the ammonia and/or ethyleneamine raw material by >=1. The objective compound can be produced in high yield on an industrial scale at a low cost by the use of the above catalyst having high activity and heat- resistance and resistant to the reaction liquid.