发明公开
- 专利标题： Photographic element and process comprising a dye releasing group
- 专利标题（中）： 包含染发剂组的摄影元素和工艺
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申请号： EP88309746.1申请日： 1988-10-18
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公开(公告)号： EP0313308A3公开(公告)日： 1990-02-28
- 发明人: Mooberry, Jared Ben c/o EASTMAN KODAK COMPANY , Singer, Stephen Paul c/o EASTMAN KODAK COMPANY
- 申请人： EASTMAN KODAK COMPANY (a New Jersey corporation)
- 申请人地址： 343 State Street Rochester, New York 14650 US
- 专利权人： EASTMAN KODAK COMPANY (a New Jersey corporation)
- 当前专利权人： EASTMAN KODAK COMPANY (a New Jersey corporation)
- 当前专利权人地址： 343 State Street Rochester, New York 14650 US
- 代理机构： Baron, Paul Alexander Clifford
- 优先权： US109371 19871019
- 主分类号： G03C7/32
- IPC分类号： G03C7/32
摘要：
A new photographic coupler comprises a coupling-off group bonded to the coupler at the coupling position represented by the formula:
wherein L is a linking group; NR' is a substituted nitrogen atom bonded to DYE that together with NR' is a releasable dye comprising an electrically neutral chromophore. Such a coupler enables dye hue stabilization without mordanting the dye formed. Such a new coupler is useful in a photographic silver halide element and process to provide increased dye density, higher contrast dye images, and lower pH sensitivity upon processing.
wherein L is a linking group; NR' is a substituted nitrogen atom bonded to DYE that together with NR' is a releasable dye comprising an electrically neutral chromophore. Such a coupler enables dye hue stabilization without mordanting the dye formed. Such a new coupler is useful in a photographic silver halide element and process to provide increased dye density, higher contrast dye images, and lower pH sensitivity upon processing.
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