申请人:Sterling Drug Inc.
公开号:US04209618A1
公开(公告)日:1980-06-24
Substituted 3,3-diphenylphthalides, useful as color precursors, particularly in the art of pressure-sensitive duplicating systems and heat-sensitive marking systems, are prepared by condensing substituted 2-benzoylbenzoic acids with substituted anilines.
制备了3,3-二苯基邻苯二甲酸酯的替代物,这些替代物在色彩预处理中非常有用,特别是在压敏复制系统和热敏标记系统的艺术中。方法是将替代的2-苯甲酰基苯甲酸与替代的苯胺缩合。