公开(公告)号：US06395681B1

公开(公告)日：2002-05-28

申请号：US06910045

申请日：1986-09-22

申请人： Seishi Ikegami ,  Takamichi Amako

发明人： Seishi Ikegami ,  Takamichi Amako

IPC分类号： B41M5145

CPC分类号： B41M5/145 ,  B41M5/327 ,  C07D307/94 ,  C07D491/10

摘要： Chromogenic compounds of colorless or lightly colored form are disclosed having the following structural formula: wherein E represents a six-membered aromatic or heterocyclic ring which may have an aromatic condensed ring and both the E ring and the condensed ring may be substituted. Each of R1, R2, R3 and R4 independently represents hydrogen, alkyl of not more than 12 carbon atoms which is unsubstituted or substituted by halogen, hydroxyl, cyano or lower alkoxy or represents cycloalkyl, phenyl, benzyl, or phenyl or benzyl which is substituted by halogen, lower alkyl or lower alkoxy or R1 and R2 or R3 and R4 together with the nitrogen atom to which they are attached represent a 5- or 6-membered heterocyclic radical. Each of R7 and R8 independently represents hydrogen, lower alkyl, lower alkoxy or halo. The compounds of this invention are eligible for use in pressure-sensitive and heat-sensitive record materials and manifold marking systems.

摘要翻译： 公开了具有以下结构式的无色或浅色形式的显色化合物：其中E表示可具有芳香稠环的六元芳族或杂环，并且E环和稠环均可被取代。每个R 1 ，R2，R3和R4独立地表示氢，未被取代或被卤素，羟基，氰基或低级烷氧基取代的不超过12个碳原子的烷基，或代表被卤素取代的环烷基，苯基，苄基或苯基或苄基， 低级烷基或低级烷氧基或R 1和R 2或R 3和R 4与它们所连接的氮原子一起代表5-或6-元杂环基。每个R 7和R 8各自独立地表示氢，低级烷基，低级烷氧基或卤素 本发明的化合物可用于压敏和热敏记录材料和歧管标记系统。