METHOD FOR REFINING TRIARYLAMINE-BASED COMPOUND

摘要

PROBLEM TO BE SOLVED: To provide a method for refining a triarylamine-based compound by which a high-purity triarylamine scarcely containing a residual solvent can efficiently be produced. SOLUTION: The method for refining the triarylamine-based compound represented by general formula (1): NRaRbRc (wherein Ra to Rc are each independently a 6-30C substituted or unsubstituted aryl group or a 6-40C substituted or unsubstituted heterocyclic group) comprises (a) a step obtaining a crude triarylamine-based compound solution by dissolving a crude triarylamine-based compound into good solvent, (b) a step dropping the crude triarylamine-based compound solution to a poor solvent and (c) a step depositing crystals of the triarylamine-based compound represented by general formula (1). COPYRIGHT: (C)2008,JPO&INPIT