申请人:Eastman Kodak Company
公开号:US04278598A1
公开(公告)日:1981-07-14
Novel photographic dye release compounds have the structure: ##STR1## wherein R.sup.1 is an aromatic group containing 5-7 members in the ring to which Nu and E are attached; R.sup.2 and R.sup.3 are bivalent organic groups containing from 1-3 atoms in the bivalent linkage which are alkylene, oxyalkylene or thiaalkylene; Nu is a nucleophilic group which is a hydrazine, an hydroxyamino, an hydroxy, a sulfonamido, a primary amino or alkali-labile precursors for said nucleophilic groups; E is an electrophilic group which is a carbonyl or a sulfonyl; Q is a bivalent group providing a mono atom linkage between E and X.sub.2 and is amino providing a mono atom nitrogen linkage, an oxygen atom, a sulfur atom or a selenium atom, provided that Nu and E are positioned on a ring of said aromatic group to provide for intramolecular formation of a 5- to 7-membered ring between Nu and E displacing Q--X.sub.2 from E; one of X.sup.1 or Q--X.sub.2 is a ballasting group containing at least 8 carbon atoms, which ballasting group is of a size sufficient to render said compound immobile in an alkaline solution-permeable layer of a photographic element; one of X.sup.1 or Q--X.sub.2 is an azo dye, an azomethine dye; an anthraquinone dye, an alizarin dye, a merocyanine dye, a quinoline dye or a cyanine dye; and n and m are integers of 1 or 2.
新型的光敏染料释放化合物具有以下结构:##STR1## 其中R.sup.1是一个芳香族基团,包含5-7个成员,连接Nu和E的环上;R.sup.2和R.sup.3是双价的有机基团,含有1-3个原子的双键连接,可以是烷基,氧烷基或硫代烷基;Nu是一个亲核基团,可以是肼,羟基氨基,羟基,磺酰胺基,一级氨基或碱性易裂解的上述亲核基团的前体;E是一个电荷亲和基团,可以是羰基或磺酰基;Q是一个双价基团,提供E和X.sub.2之间的单原子键连接,并且可以是氨基提供单原子氮键连接,氧原子,硫原子或硒原子,前提是Nu和E位于所述芳香族基团的环上,以便在Nu和E之间形成5-到7-成员环,将Q-X.sub.2从E中取代;X.sup.1或Q-X.sub.2中的一个是含有至少8个碳原子的平衡基团,该平衡基团的大小足以使该化合物在光敏元素的碱性溶液渗透层中不动;X.sup.1或Q-X.sub.2中的一个是偶氮染料,偶氮亚甲基染料;蒽醌染料,茜素染料,美洛色染料,喹啉染料或青烷染料;n和m是1或2的整数。