An aqueous ink composition.

摘要

57 An aqueous ink composition comprising a dyestuff, a wetting agent and water, characterized in that said dyestuff is a compound of the formula:
<Chemistry id="chema01" num="0001"><Image id="ia01" he="22" wi="90" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>wherein M<Sub>1</Sub> and M<Sub>2</Sub> are, the same or different, each a hydrogen atom, an alkali metal atom, an ammonium group or an organic ammonium group and X is an alkylamine or alkoxyalkylamine residue having 6 to 18 carbon atoms. Said ink composition is improved in storage stability, jet stability, image clarity, water resistance, etc.