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公开(公告)号：EP1145078B1
公开(公告)日：2003-09-10
申请号：EP99962405.9
申请日：1999-12-22
IPC分类号： G03C7/34 , C07C311/08
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 represented by formula (II), 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 of 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.
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公开(公告)号：EP1145078A1
公开(公告)日：2001-10-17
申请号：EP99962405.9
申请日：1999-12-22
IPC分类号： G03C7/34 , C07C311/08
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 represented by formula (II), 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 of 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.
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