申请人:Eastman Kodak Company
公开号:US05677114A1
公开(公告)日:1997-10-14
A photographic element comprises a light sensitive silver halide emulsion layer having associated therewith an open chain .alpha.-carbonyl acetanilide yellow dye-forming coupler having the formula: ##STR1## wherein R.sub.1 is selected from the group consisting of alkyl, aryl, heterocyclic, and amino groups, provided that R.sub.1 may form a ring bonded to another carbon atom which is a member of Ring "A"; each R.sub.2 is independently selected from the group consisting of those substituents having a Hammett's sigma value of 0 or less, and m is from 0 to 4; each R.sub.3 and R.sub.4 for each of the n carbon atoms is independently selected from the group consisting of hydrogen, alkoxy, aryl, heterocyclic, aryloxy, and alkyl groups, and n is 0 to 16; each R.sub.5 is independently selected from the group consisting of amino, alkyl groups, and groups linked to the "B" ring by oxygen or sulfur, and p is 1 to 3, provided that two R.sub.5 groups may join to form a ring; each L is independently a divalent linking group and q is 0 to 3; and Ring "A" is bonded indirectly to the 3-, 4-, or 5-position of Ring "B", R.sub.6 is selected from the group consisting of alkyl, aryl, and amino groups; and Z is hydrogen, or a group capable of coupling-off when the coupler reacts with an oxidized color developing agent.
一种摄影元素包括一个光敏感的银卤化物乳液层,与之相连的是一个开链α-羰基乙酰苯胺黄色染料形成偶合剂,其化学式为:##STR1## 其中,R.sub.1选自烷基、芳基、杂环基和氨基基团组成的群体,但要求R.sub.1可以形成与“A”环中的另一个碳原子相键合的环;每个R.sub.2独立地选自具有Hammett's sigma值为0或更低的取代基的群体,m为0到4;每个R.sub.3和R.sub.4对于n个碳原子中的每一个是独立地选自氢、烷氧基、芳基、杂环基、芳氧基和烷基的群体,n为0到16;每个R.sub.5独立地选自氨基、烷基和通过氧或硫连接到“B”环的群体,p为1到3,但要求两个R.sub.5基团可以结合形成环;每个L独立地是二价连接基团,q为0到3;环“A”间接地键合到环“B”的3-、4-或5-位,R.sub.6选自烷基、芳基和氨基基团,Z为氢或能够在偶合剂与氧化的彩色显影剂反应时脱离的群体。