TRIARYL METHANE-BASED AND RHODAMINE-BASED PIGMENT COMPOSITION, AND PIGMENT DISPERSION USING THESE

摘要

PROBLEM TO BE SOLVED: To provide a lake pigment having excellent light resistance and heat resistance and having a triaryl methane structure and/or a rhodamine structure, and to provide a pigment dispersion using the same. SOLUTION: The pigment composition is formed by treating an untreated pigment selected from lake pigments having a triaryl methane structure and/or a rhodamine structure with an organic acid selected from the group composed of a substituted or non-substituted aryl sulfonic acid and a substituted or non-substituted aryl carboxylic acid. COPYRIGHT: (C)2011,JPO&INPIT