Optical brightening agents of naphthalimide derivatives

Abstract

Abstract A naphthalimide derivative having the formula <IMAGE> wherein R is an alkyl, or cycloalkyl, an aralkyl, a haloalkyl, an alkoxyalkyl, a hydroxyalkyl, an N,N-dialkylaminoalkyl, an unsubstituted or halogen-, alkyl-, alkoxy- or hydroxy-substituted aryl, or an ammoniumalkyl; X is a group of the formula, <IMAGE> wherein A is <IMAGE> or an unsubstituted or halogen-substituted arylene, or a group of the formula, <IMAGE> wherein R1 is hydrogen, an alkyl, phenyl, a hydroxyalkyl, or an alkoxyalkyl; Y is -CO-, -COO-, -CONR3- (where R3 is hydrogen or an alkyl), or -SO2-; R2 is hydrogen, an alkyl, a cycloalkyl, an aralkyl, a haloalkyl, an alkyl- or aryl-substituted amino-alkyl, an unsubstituted or halogen-, alkyl-, alkoxy-, hydroxy-, amino- or alkylamino-substituted aryl, a group of the formula, <IMAGE> (where R, R1 and Y are as defined above and R4 is a bivalent group), or a group of the formula, -R5-Q+ .

Inventors

• 👤 Seiji Hotta
• 👤 Takashi Akamatsu

Bibliographic Details