Novel pyrazolone photograhic colour couplers and photographic elements containing them
申请人:EASTMAN KODAK COMPANY
(a New Jersey corporation)
公开号:EP0348135A2
公开(公告)日:1989-12-27
A pyrazolone colour coupler of the general formula:
wherein R¹ is H or Cℓ,
R² is -NHSO₂R , -NHCOR⁹, -NHCONHR⁹, -CONHR⁹, -NR⁸R⁹, -R or -OR , or together with R forms a fused ring system.
R³, R⁴,R⁵ and R⁶ are each H, Cℓ or R²,
R⁷ is H, -COOR⁸ or -CONHR⁸,
R⁸ = alkyl or substituted alkyl, and
R⁹ = H or R⁸
has improved keeping, coupling activity and image stability.
通式如下的吡唑酮颜色耦合剂
其中 R¹ 是 H 或 Cℓ、
R² 是-NHSO₂R、-NHCOR⁹、-NHCONHR⁹、-CONHR⁹、-NR⁸R⁹、-R 或-OR,或与 R 一起形成一个融合环系统。
R³、R⁴、R⁵ 和 R⁶ 各为 H、Cℓ 或 R²、
R⁷ 是 H、-COOR⁸ 或 -CONHR⁸、
R⁸ = 烷基或取代的烷基,以及
R⁹ = H 或 R⁸
具有更好的保持性、偶联活性和图像稳定性。