| abstract |
Dyes of Formula (1) and tautomers thereof, wherein: A is optionally substituted phenyl; R1 is H, optionally substituted alkyl, optionally substituted alkenyl or optionally substituted alkynyl; R2 is H, CN, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted aryl or a carbonamido group; and R3 is an optionally substituted 5- or 6- membered ring; provided that R1 is not methyl. Also claimed are inks comprising a dye of Formula (1) an aqueous medium and a water-dissipatable polymer; a method of ink jet printing using the inks; and a substrate printed with an ink according to the invention. |