Photographic elements employing nondiffusible azoaminophenol magenta dye-releasing compounds or precursors thereof
申请人:EASTMAN KODAK COMPANY
(a New Jersey corporation)
公开号:EP0070019A1
公开(公告)日:1983-01-19
Photographic elements are described which employ a novel, nondiffusible compound having a releasable, bridged, azoaminophenol magenta dye moiety or precursor thereof having the formula:
wherein:
(a) R represents hydrogen, a hydrolyzable moiety or CAR;
(b) R1 represents hydrogen;
(c) R2 represents an alkyl group of 1 to 6 carbon atoms or CAR; or
R1 and R2 represent an alkylene group which can be taken together with the atoms to which they are attached to complete a 5- or 6-membered heterocyclic ring;
(d) R3 represents an alkyl group of 1 to 6 carbon atoms or CAR;
(e) R4 represents hydrogen; or
R3 and R4 represent an alkylene group which can be taken together with the atoms to which they are attached to complete a 5- or 6-membered heterocyclic ring; with the proviso that at least one of the 5- or 6-membered heterocyclic rings of (c) or (e) is present in the compound;
(f) CAR represents a ballasted carrier moiety capable of releasing the diffusible magenta dye moiety, or precursor thereof, under alkaline conditions; and
(g) n is 0, 1 or 2, with the proviso that when n is 0, then at least one of R, R2 or R3 is CAR.
所述照相元件采用了一种新型的、不可扩散的化合物,该化合物具有可释放的、桥接的、偶氮氨基苯酚品红色染料分子或其前体,其分子式为
其中
(a) R 代表氢、可水解基团或 CAR;
(b) R1 代表氢
(c) R2 代表 1 至 6 个碳原子的烷基或 CAR;或
R1 和 R2 代表一个亚烷基,该亚烷基可与所连接的原子一起组成一个 5 或 6 元杂环;
(d) R3 代表 1 至 6 个碳原子的烷基或 CAR;
(e) R4 代表氢;或
R3 和 R4 代表一个亚烷基,该亚烷基可与所连接的原子一起组成一个 5 或 6 元杂环;但前提是化合物中至少存在一个(c)或(e)的 5 或 6 元杂环;
(f) CAR 代表在碱性条件下能释放可扩散品红色染料分子或其前体的压载载体分子; 以及
(g) n 为 0、1 或 2,但当 n 为 0 时,R、R2 或 R3 中至少有一个是 CAR。