METAL-CONTAINING MONOAZO COMPOUND AND RECORDING SOLUTION CONTAINING SAID COMPOUND

摘要

NEW MATERIAL:A compound shown by formula I [X is H or halogen; A is -SO3W-substituted naphthalene nucleus-forming atomic group (W is alkali metal, ammonium or amines); M is Cu or Co]. EXAMPLE:A compound shown by formula II. USE:Dye for magenta recording solution for writing tools (fountain pen, felt pen, etc.) or ink jet recording method. PREPARATION:An aminophenol shown by formula III is diazotized with sodium nitrite in a mineral acid such as hydrochloric acid, sulfuric acid, etc., and coupled with a naphthol shown by formula IV to give a monoazo compound shown by formula V. Then this compound is treated with a copper salt such as copper acetate or cobalt acetate in water and/or a water-soluble organic solvent such as alcohol, etc.