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    Photographic couplers having improved image dye light stability
    2.
    发明授权
    Photographic couplers having improved image dye light stability 失效
    具有改善的图像染料光稳定性的照相成色剂

    公开(公告)号：US06699650B1

    公开(公告)日：2004-03-02

    申请号：US09856396

    申请日：2001-05-22

    申请人： David Clarke ,  Llewellyn J. Leyshon ,  Katie E. Smith

    发明人： David Clarke ,  Llewellyn J. Leyshon ,  Katie E. Smith

    IPC分类号： G03C746

    CPC分类号： C07C311/08 ,  G03C7/346

    摘要： There is provided a photographic element comprising at least one silver halide emulsion layer having associated therewith a novel phenolic cyan dye-forming coupler of formula (I) wherein X is hydrogen or a group that can be split off by the reaction of the coupler with an oxidised colour developing agent, and one of Y and Z is the group  wherein each R is independently an unsubstituted or substituted alkyl or aryl group or a 5-10 membered heterocyclic ring which contains one or more heteroatoms selected from nitrogen, oxygen and sulfur, which ring is unsubstituted or substituted; R1 is hydrogen or an unsubstituted or substituted alkyl or aryl group, R2 is an unsubstituted or substituted alkyl or aryl group or a 5-10 membered heterocyclic ring which contains one or more heteroatoms selected from nitrogen, oxygen and sulfur, which ring is unsubstituted or substituted; R3 is hydrogen or an unsubstituted or substituted alkyl or aryl group, n is 1 or 2, and the other of Y and Z is an unsubstituted or substituted alkyl or aryl group or a 5-10 membered heterocyclic ring which contains one or more heteroatoms selected from nitrogen, oxygen and sulfur, which ring is unsubstituted or substituted. The couplers for use in the element of the invention yield cyan images of good hue, with good stability to heat, humidity and light, whilst retaining the other properties desirable for good photographic performance.

    摘要翻译： 提供了一种照相元件，其包含至少一个卤化银乳剂层，其具有式（I）的新型酚类青色染料形成成色剂，其中X是氢或可以通过成色剂与氧化的反应分离的基团 颜色显影剂，Y和Z的一个是基团，其中R独立地是未取代或取代的烷基或芳基或含有一个或多个选自氮，氧和硫的杂原子的5-10元杂环，该环是未取代的或 取代的; R1是氢或未取代或取代的烷基或芳基，R2是未取代或取代的烷基或芳基或含有一个或多个选自氮，氧和硫的杂原子的5-10元杂环，该环是 未取代或取代的; R3是氢或未取代或取代的烷基或芳基，n是1或2，Y和Z中的另一个是未取代的或 取代的烷基或芳基或含有一个或多个选自氮，氧和硫的杂原子的5-10元杂环，该环是未取代或取代的。用于本发明元件的成色剂产生良好色调的青色图像 对于热，湿度和光线具有良好的稳定性，同时保持其它性能对于良好的照相性能是理想的。