Coty Inc.
OXIDATIVE DYE COUPLERS WITH NOVEL AUXOCHROME SUBSTITUENTS AND AZOMETHINE DYES AND LEUCO FORMS THEREOF

Abstract:

The present invention concerns an auxochrome substituent for an oxidative dye coupler. The auxochrome substituent enables ready developer reaction with the coupler to form azomethine and leuco dyes. Manipulation of the auxochrome substituent enables a bathochromic or hypsochromic shift of the light absorbance by the azomethine dye formed with the auxochrome substituted coupler.