申请人:AGFA-GEVAERT N.V.
公开号:US04232107A1
公开(公告)日:1980-11-04
Said material contains a quinone-type compound which corresponds to one of the formulae (A) or (B) and which is capable in reduced state and under alkaline conditions of releasing a photographically useful group e.g. a dye: ##STR1## wherein: each of (Nuox).sup.1 and (Nuox).sup.2 represents an oxidized nucleophilic group, Z represents a bivalent atomic group which is electronegative, Q together with the Z group represents a releasable photographically useful group, each of R.sup.1, R.sup.2 and R.sup.3 is hydrogen, halogen, alkyl, alkoxy, or an acylamino group or R.sup.1 and R.sup.2 in adjacent positions on the ring form a ring fused with the remainder of the molecule, or R.sup.2 and R.sup.3 together are fused with the remainder of the molecule. each of R.sup.4 and R.sup.5 represents hydrogen or a hydrocarbon group. At least one of the substituents R.sup.1, R.sup.2, R.sup.3, R.sup.4 or R.sup.5 is a ballasting group X.
所述材料包含一种喹酮类化合物,该化合物与公式(A)或(B)之一相对应,并且在还原状态和碱性条件下能够释放出一种在摄影方面有用的基团,例如染料:##STR1## 其中:每个(Nuox).sup.1和(Nuox).sup.2代表氧化的亲核基团,Z代表带电负的双价原子基团,Q与Z基团一起代表可释放的在摄影方面有用的基团,每个R.sup.1、R.sup.2和R.sup.3是氢、卤素、烷基、烷氧基或酰胺基团,或者相邻位置的R.sup.1和R.sup.2在环上形成与分子其余部分融合的环,或者R.sup.2和R.sup.3一起与分子其余部分融合。每个R.sup.4和R.sup.5代表氢或烃基团。在取代基R.sup.1、R.sup.2、R.sup.3、R.sup.4或R.sup.5中至少有一个是平衡基团X。