A water base ink for ink-jet recording contains an amine compound selected from the group consisting of N-n-butylethanolamine, 1,4-bis(3-aminopropyl)piperazine, benzylamine, and an amine compound represented by a specified structural formula, a surfactant having a specified structural formula, a coloring...http://www.google.fr/patents/US6921429?utm_source=gb-gplus-shareBrevet US6921429 - Water base ink for ink-jet recording
