发明授权
- 专利标题: Photographic material comprising a bicyclic pyrazolo coupler
- 专利标题(中): 包含双环吡唑偶合剂的摄影材料
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申请号: US725266申请日: 1996-10-02
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公开(公告)号: US5811230A公开(公告)日: 1998-09-22
- 发明人: Ping Wah Tang , Wendell Smith , Stanley W. Cowan
- 申请人: Ping Wah Tang , Wendell Smith , Stanley W. Cowan
- 申请人地址: NY Rochester
- 专利权人: Eastman Kodak Company
- 当前专利权人: Eastman Kodak Company
- 当前专利权人地址: NY Rochester
- 主分类号: C07D487/04
- IPC分类号: C07D487/04 ; G03C7/38 ; G03C1/08 ; G03C7/26 ; G03C7/32
摘要:
Novel bicyclic pyrazolo couplers containing a fully substituted carbon at the 6-position of the bicyclic structure and a ballast group of formula (I): ##STR1## are useful in photographic materials and processes. The couplers exhibit increased coupling activity, and provide formation of dyes having improved maximum magenta image dye density, contrast, and photographic speed when employed in color photographic materials and processes. The variables are defined more specifically in the specification.
公开/授权文献
- USD338082S Lighting fixture dish 公开/授权日:1993-08-03
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