申请人:Minnesota Mining and Manufacturing Company
公开号:US04710570A1
公开(公告)日:1987-12-01
Azine redox dyes and their corresponding dyes of the formula: ##STR1## in which: X is O, S, NR.sup.2, Z completes a fused aromatic of heterocyclic ring system, n is 0 or 1 to allow one R.sup.1 ring substituent, Q represents CR.sup.4 R.sup.5 in which at least one of R.sup.4 and R.sup.5 is an electronegative group or R.sup.4 and R.sup.5 may complete a ring, or when X is S Q may represent NR.sup.3 in which R.sup.3 is an aromatic or heterocyclic group. The leuco dyes are useful as dye generators in pressure sensitive, thermographic or photothermographic imaging systems.
Azine氧化还原染料及其相应的染料的公式如下:##STR1## 其中:X为O、S、NR.sup.2,Z完成了一个融合的芳香或杂环环系统,n为0或1以允许一个R.sup.1环取代基,Q代表CR.sup.4 R.sup.5,其中至少一个R.sup.4和R.sup.5是一个电负性基团,或者R.sup.4和R.sup.5可以完成一个环,或者当X为S时,Q可以表示NR.sup.3,其中R.sup.3为一个芳香或杂环基团。这些亚胺染料在压敏、热敏或光热成像系统中作为染料发生器是有用的。