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    Photographic element containing pyrazolone PUG releasing coupler and imaging process employing same
    52.
    发明授权
    Photographic element containing pyrazolone PUG releasing coupler and imaging process employing same 失效
    含有吡唑啉酮PUG释放成色剂的摄影元件和使用其的成像方法

    公开(公告)号：US06150078A

    公开(公告)日：2000-11-21

    申请号：US223215

    申请日：1998-12-30

    申请人： Wojciech K. Slusarek ,  Jerrold N. Poslusny ,  Zheng Z. Wu ,  Xiqiang Yang

    发明人： Wojciech K. Slusarek ,  Jerrold N. Poslusny ,  Zheng Z. Wu ,  Xiqiang Yang

    IPC分类号： G03C7/305 ,  G03C1/08 ,  G03C7/26 ,  G03C7/32

    CPC分类号： G03C7/305 ,  G03C7/30529 ,  G03C7/30552 ,  G03C7/30558 ,  Y10S430/156 ,  Y10S430/157 ,  Y10S430/158 ,  Y10S430/159 ,  Y10S430/16 ,  Y10S430/161

    摘要： The invention provides a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith an 1-arylpyrazol-5-one coupler bearing a 4-aryloxy coupling-off group containing a group capable of releasing a photographically useful group (PUG) wherein:(1) the 1-arylpyrazol-5-one ring contains a 3-aryl substituent which in turn contains substituents for which the sum of the Hammett's .sigma. constant values is at least 0, provide that two or more such substituents may join to form one or more additional rings; and(2) the 4-aryloxy coupling-off group:(a) contains ring substituents selected so that the sum of the Hammett's sigma constant values for all substituents on the aryloxy ring is at least 0.4 but does not contain a nitro substituent in the ortho position, and:(b) contains in at least one position ortho or para to the oxygen atom bonding the aryloxy group to the pyrazolone ring a substituent comprising a tetrahedral carbon atom bonded to a photographically useful group (PUG) or to another timing group which timing group is in turn bonded to a PUG directly or through a further timing group;provided substituents may join to form one or more additional rings.

    摘要翻译： 本发明提供了一种照相元件，其包含感光卤化银乳剂层，其具有与芳基吡唑-5-酮偶联剂相关联的1-芳基吡唑-5-酮偶联剂，其具有含有能够释放照相用基团（PUG）的基团的4-芳氧基偶联离去基团，其中 ：（1）1-芳基吡唑-5-酮环含有3-芳基取代基，该芳基取代基又包含哈米特σ总和的总和至少为0的取代基，提供两个或更多个这样的取代基可以连接形成 一个或多个附加环; 和（2）4-芳氧基偶合基团：（a）含有选择的环取代基，使得芳氧基环上所有取代基的哈米特σ常数值之和至少为0.4，但不包含硝基取代基 邻位，和（b）在至少一个位置的至少一个位置，将氧基原子键合到吡唑啉酮环上的氧原子，所述取代基包含与照相用组（PUG）键合的四面体碳原子或另一定时基团 该定时组又直接或通过另外的定时组合结合到PUG; 所提供的取代基可以连接形成一个或多个另外的环。