Optical coloring composition

Abstract

Abstract PURPOSE:To obtain the composition having the high coloring density and the abundant color kinds by incorporating a coloring org. compd. capable of supplying electron and a specified compd. in the titled composition. CONSTITUTION:The titled composition contains the coloring org. compd. capable of supplying electron and the compd. shown by formula I wherein X1-X3 are each hydrogen or chlorine atom, etc., Y is -NH2 or -NHR' group, etc., R' is alkyl or aryl group, etc. The titled composition forms an active species such as a free radical by projecting an active ray, and said species react with said coloring org. compd., to carry out the coloring reaction, thereby coloring said composition. The reaction speed of the coloring reaction is fast, and the coloring matter of the titled composition having a prescribed color tone and the high optical density is freely obtd. by changing suitably the kind of said coloring org. compd.

Inventors

• 👤 Fumio Kawamura
• 👤 Takao Azuma

Bibliographic Details