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    • 1. 发明授权
    • Image dye-forming couplers and photographic elements containing them
    • 图像染料形成成色剂和含有它们的摄影元件
    • US6071683A
    • 2000-06-06
    • US131851
    • 1998-08-07
    • John D. GoddardDanuta GibsonLlewellyn J. LeyshonBrian Thomas
    • John D. GoddardDanuta GibsonLlewellyn J. LeyshonBrian Thomas
    • C07C235/80C07C311/08C07D263/44G03C7/30G03C7/305G03C7/36G03C7/392G03C1/08
    • C07D263/44C07C235/80C07C311/08G03C7/3013G03C7/30535G03C7/36G03C7/39216
    • The present invention relates to a silver halide photographic element comprising a dye-forming coupler of formula (I) ##STR1## wherein R.sup.1 is selected from an alkyl group, an aryl group, a 5-10 membered heterocyclic group containing one or more O, N or S atoms, each of which groups is unsubstituted or substituted, or a substituted amino group;R.sup.2 is an unsubstituted alkyl group having a secondary or tertiary carbon atom attached to the oxygen atom;X is hydrogen or a coupling-off group; andR.sup.3 is a substituent and n is 0 to 4; orwherein R.sup.2, as defined above, and an R.sup.3 substituent may together with the O atom form a 5-10 membered heterocyclic group which may contain one or more further heteroatoms selected from O, N and S, said group being unsubstituted or substituted; andwherein at least one of R.sup.1, R.sup.2 and R.sup.3 separately or in combination constitutes a ballast group,the couplers providing enhanced light stability together with acceptable dye hue in images produced from photographic materials containing them.
    • 本发明涉及一种卤化银照相元件,其包含式(I)的染料形成成色剂,其中R 1选自烷基,芳基,含有一个或多个O,N或S的5-10元杂环基 原子,其各自为未取代或取代的基团,或取代的氨基; R2是与氧原子连接的具有仲或叔碳原子的未取代的烷基; X是氢或偶合离去基团; R3为取代基,n为0〜4; 或其中如上定义的R 2和R 3取代基可以与O原子一起形成5-10元杂环基团,其可以含有一个或多个另外的选自O,N和S的杂原子,所述基团是未取代的或取代的; 并且其中R 1,R 2和R 3中的至少一个分别或组合构成镇流器基团,所述成色剂提供增强的光稳定性以及由含有它们的照相材料产生的图像中可接受的染料色调。
    • 6. 发明授权
    • Photographic addenda
    • 摄影附录
    • US06200741B1
    • 2001-03-13
    • US09443743
    • 1999-11-19
    • Paul L. StanleyJohn D. Goddard
    • Paul L. StanleyJohn D. Goddard
    • G03C108
    • G03C7/39236G03C7/30535
    • The present invention provides a photographic element comprising a support bearing a light-sensitive silver halide emulsion layer in association with an image dye-forming coupler and having associated therewith a compound of general formula wherein R1 is an unsubstituted or substituted alkyl group, aryl group or 5-10 membered heterocyclic ring group containing one or more heteroatoms selected from N, O and S; each R2 is independently selected from hydrogen, halogen, and substituted or unsubstituted alkyl, aryl, alkyl- or aryl-sulfamoyl, alkyl- or aryl-sulfonamido, alkyl- or aryl-carbamoyl, alkyl- or aryl-carbonamido, alkenyloxy or 5-10 membered heterocyclic ring group containing one or more heteroatoms selected from N, O and S; each Y is independently selected from the groups consisting of —NHSO2 and —SO2NH; wherein the hydrogen therein has a pKa value of less than 9; n is an integer from 1 to 20; x is an integer from 1 to 6 and wherein the compound is ballasted. The addenda of formula (I) can significantly increase the image dye yield and improve robustness to process pH variation, without adverse effects on coupler or dye stability, dye hue and/or speed, in a simple, cost effective way.
    • 本发明提供了一种照相元件,其包含支持感光卤化银乳剂层的支持物,其与形成成像剂的成色剂相结合,并且与其相关联的通式化合物R1是未取代或取代的烷基,芳基或5- 含有一个或多个选自N,O和S的杂原子的10元杂环基;每个R 2独立地选自氢,卤素和取代或未取代的烷基,芳基,烷基 - 或芳基 - 氨磺酰基,烷基 - 或芳基 - 亚磺酰氨基, 含有一个或多个选自N,O和S的杂原子的烷基或芳基 - 氨基甲酰基,烷基 - 或芳基 - 碳酰氨基,烯氧基或5-10元杂环基;每个Y独立地选自-NHSO 2和 - SO2NH; 其中其中的氢气的pKa值小于9; n为1至20的整数; x为1至6的整数,并且化合物被镇定。式(I)的添加剂可显着提高图像染料的产率 并且以简单且成本有效的方式提高了稳定性以处理pH变化,而不影响成色剂或染料稳定性,染料色调和/或速度。