3-[4-(Disubstituted-amino)phenyl] or (9-julolidinyl)-3-(diphenylamino)phthalides useful as color formers in pressure-sensitive and thermal marking systems are prepared by reaction of 2-[4-(disubstituted-amino)benzoyl] or (9-julolidinyl-carbonyl)benzoic acids with diphenylamines.
3-[4-(二取代
氨基)苯基]或(9-茱萸啉基)-3-(
二苯胺基)邻
酞菁是在压敏和热敏标记系统中有用的色形成剂,通过2-[4-(二取代
氨基)苯甲酰基]或(9-茱萸啉基-羰基)
苯甲酸与
二苯胺反应制备。