申请人:Eastman Kodak Company
公开号:US04195993A1
公开(公告)日:1980-04-01
Cyan azo dye-providing compounds have the formula: ##STR1## wherein: R.sup.1 is selected from the group consisting of aryl, alkyl or NR.sup.11 R.sup.12 wherein R.sup.11 is alkyl or aryl and R.sup.12 is alkyl, or R.sup.11 and R.sup.12, taken together with the nitrogen atom to which they are attached, is a heterocyclic group; X is --CO-- or --SO.sub.2 --; R.sup.3 is --COOH or --CAR and is attached in the meta or para position to X in the benzene ring; R is alkyl; ##STR2## or can be taken together with R and the nitrogen atom to which it is attached to form a heterocyclic ring unsubstituted or substituted with a carboxy group; and CAR is a carrier moiety which, as a function of oxidation under alkaline conditions, releases a diffusible dye, with the proviso that the compound contains at least one CAR group and, excepting when R and R.sup.2 form a heterocyclic group and X is --SO.sub.2 --, must contain at least one carboxy group. The compounds are particularly useful in photographic elements and more particularly useful in image transfer film units.
氰基偶氮染料提供化合物的公式为:##STR1## 其中:R.sup.1选自芳基,烷基或NR.sup.11R.sup.12组成的群,其中R.sup.11为烷基或芳基,R.sup.12为烷基,或R.sup.11和R.sup.12与它们所连接的氮原子一起形成杂环基团;X为--CO--或--SO.sub.2--;R.sup.3为--COOH或--CAR,连接在苯环中的X的间位或对位;R为烷基;##STR2##或者可以与R和它所连接的氮原子一起形成未取代或取代的羧基杂环环,其中CAR是载体基团,根据碱性条件下的氧化作用,释放可扩散染料,但前提是化合物至少含有一个CAR基团,并且除非R和R.sup.2形成杂环基团且X为--SO.sub.2--,否则必须含有至少一个羧基。这些化合物在摄影元素中特别有用,尤其在图像转移胶片单元中更为有用。