NEW BENZIMIDAZOLONE COMPOUND AND COLORING AGENT

摘要

PROBLEM TO BE SOLVED: To provide a new benzimidazolone compound and coloring agent. SOLUTION: This compound is the benzimidazolone compound expressed by general formula (1) [wherein, R1to R4are each independently H, a 1-5C alkyl or a 1-5C alkoxy]. The benzimidazolone compound is useful as the coloring agent, and a coloring agent composition containing the benzimidazolone compound is also provided. Especially, a compound of formula (1) in which all of the R1to R4are H, is an excellent coloring agent having a violet color. COPYRIGHT: (C)2005,JPO&NCIPI