申请人:The Hilton-Davis Chemical Co.
公开号:US04688059A1
公开(公告)日:1987-08-18
This invention relates to 3-aryl or heteroaryl-3-alkoxy, phenoxy-, alkylthio- or phenylthiophthalides useful as color formers, particularly in carbonless duplicating and thermal marking systems, which are prepared by the interaction of 2-(disubstituted amino)phenylcarbonylbenzoic acids with an acid chloride or an anhydride of an alkanoic acid in the first step and a further reaction of the product of the first step with an alcohol, a thioalcohol, a phenol or a thiophenol in a second step.
本发明涉及用作颜色形成剂的3-芳基或杂芳基-3-烷氧基、苯氧基、烷硫基或苯硫基邻苯二甲酸酐,特别是在无碳复写和热标记系统中有用的邻苯二甲酸酐。该邻苯二甲酸酐的制备方法包括以下两个步骤:第一步是将2-(二取代氨基)苯甲酰基苯甲酸与酸氯或脂肪酸酸酐进行反应;第二步是将第一步得到的产物与醇、硫醇、酚或硫酚进行反应。