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    • 7. 发明授权
    • Photographic element and compound and process useful therewith
    • 摄影元素及其有用的化合物和方法
    • US06296997B1
    • 2001-10-02
    • US09707586
    • 2000-11-07
    • Robert F. RomanetWilliam B. VreelandJohn W. HarderChristopher T. BrownScott R. ConleyMichael P. Youngblood
    • Robert F. RomanetWilliam B. VreelandJohn W. HarderChristopher T. BrownScott R. ConleyMichael P. Youngblood
    • G03C108
    • G03C5/386
    • Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a bicyclic azole dye-forming coupler compound having Formula I: wherein: BA represents a bicyclic azole coupler nucleus with —(C(R1)(R2))P— bonded to a ring carbon in a non-coupling position of the coupler nucleus; p is 1 or 2, and each R1 and R2 is independently selected from H and a substituent group, provided that any two of R1 and R2 may join to form a ring; Ra and Rb are each independently selected from H and a substituent group, provided that substituent groups may join to form a ring; each Y is an independently selected substituent and m is 0-4; X is selected from the group consisting of —C(O)—, —S(O)2—, —S(O)—, and —P(O)(OH)—; W is a connecting group having a chain of up to four atoms between X and Z, and n=0 or 1; and a) when n=0, Z is —NHR5 where R5 is H or a substituent, and b) when n=1, Z is selected from —OH, —SO2NHR5, and —NHR6 where R5 is H or a substituent group and R6 is a substituent bonded to —NH— by an electron withdrawing group in R6; provided that the ClogP value of the coupler compound is at least 5.0. The element provides improved color rendition.
    • 公开了一种照相元件,其包含感光卤化银乳剂层,其具有式I的双环唑形染料形成成色剂化合物:其中:BA表示具有 - (C(R 1)(R 2))P的双环唑偶合子核 - 键合到成色剂核的非偶联位置的环碳; p为1或2,并且每个R 1和R 2独立地选自H和取代基,条件是R 1和R 2中的任何两个可以连接形成 环; R a和R b各自独立地选自H和取代基,条件是取代基可以连接形成环;每个Y是独立选择的取代基,m是0-4; X选自 -C(O) - , - S(O)2 - , - S(O) - 和-P(O)(OH) - ; W是在X和Z之间具有至多四个原子的链的连接基团 ,n = 0或1; 和a)当n = 0时,Z是-NHR 5,其中R 5是H或取代基,和b)当n = 1时,Z选自-OH,-SO 2 NHR 5和-NHR 6,其中R 5是H或取代基,R 6是 通过R6中的吸电子基团与-NH-键合的取代基;条件是成色剂化合物的ClogP值至少为5.0。该元素提供改进的色彩再现。