申请人:Sterling Drug Inc.
公开号:US04168378A1
公开(公告)日:1979-09-18
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)邻苯二甲酸酐可用作压敏和热敏标记系统中的显色剂,通过2-[4-二取代氨基苯甲酰]或(9-茱萸啉基-羰基)苯甲酸与二苯胺的反应制备。