申请人:Sterling Drug Inc.
公开号:US04094877A1
公开(公告)日:1978-06-13
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.
用于颜色前体的3,3-二苯基邻苯二酸酯,特别是在压敏复写系统和热敏标记系统的艺术中,通过将取代的2-苯甲酰基苯甲酸与取代的苯胺缩合来制备。