2-(Aryl-azo)- & 2-(heterocyclyl-azo)- 1,3,5-triazine dyes, and metal chelates thereof, for use in ink-jet inks and printing

摘要

Compounds of formula (1) or a salt or metal chelate thereof: wherein: ```A is optionally substituted aryl or optionally substituted heterocyclyl; and ```R<1> and R<2> are independently H or a substituent; are dyes which are suitable for use in ink-jet inks and printing.