N-n-アルキルエチレンジアミン有機酸塩の表面活性

抄録

N-n-alkylethylenediamine have been prepared by the condensation of ethylenediamine with alkylbromides (C₁₀C₁₆). They were waxy, low-melting solids and combined with two equivalents of organic acids to form neutral salts which would be useful as cationic surfactants. Investigations were made on the surface activities of these salts with acetic, lactic and propionic acid. N-n-alkyl-ethylenediamine salts containing C₁₀ and C₁₆-alkyl group did not show good surface activities. On the other hand, N-n-dodecyl or N-n-tetradecylethylenediamine salts were found to have excellent surface activities. In respect of surface tension and penetrating power, acetates and lactates were superior, to the propionates, but inferior in foaming power.