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    • 10. 发明专利
    • PRODUCTION OF POLYAMINE
    • JPH08291111A
    • 1996-11-05
    • JP12313095
    • 1995-04-24
    • MIYOSHI YUSHI KK
    • HOSODA KAZUOMORIYA MASAFUMI
    • C07C209/60C07C211/13C08G73/02
    • PURPOSE: To easily produce a polyamine useful as a raw material for surfactant or metal scavenger at low cost by reacting a polyalkylpolyamine used as a raw material with an alkylene dichloride in the presence of water under atmo spheric pressure. CONSTITUTION: (A) A polyalkylenepolyamine (preferably ethylenediamine or diethylenetriamine) used as a raw material is made to react with (B) an alkylene dichloride (e.g. ethylene dichloride or propylene dichloride) in the presence of water under atmospheric pressure, the reaction product is treated with an alkali (preferably sodium hydroxide) and the produced salt is separated to obtain a polyamine having a molecular weight higher than that of the component A. The molar ratio of the component A to the component B in the reaction is preferably 1:(0.5-1.5). A polyethylenimine having a structure similar to the one obtained by the polymerization of a cyclic ethylenimine can be produced by adjusting the reaction ratio of the component A and the component B. The amount of water in the reaction system is preferably 5-60wt.%.