Photographic colour couplers and photographic materials containing them
申请人:KODAK LIMITED
公开号:EP0622673A1
公开(公告)日:1994-11-02
A photographic element comprising a support, at least one photosensitive silver halide layer and in or adjacent said silver halide layer a colour coupler of one of the general formulae:
wherein
R¹ is a group substantially without any electron-withdrawing capability,
R² is a substituent not incompatible with the function of the compound,
R³ is an alkyl, aryl or heterocyclic group any of which may be substituted, and
X is a coupling-off group.
一种感光元件,包括一个支架、至少一个感光卤化银层以及在所述卤化银层中或邻近所述卤化银层的通式之一的彩色耦合剂:
其中
R¹ 是基本上不具有任何电子吸收能力的基团、
R² 是与化合物功能不相容的取代基、
R³ 是烷基、芳基或杂环基团,其中任何一个都可以被取代,以及
X 是偶联基团。