| 摘要 |
The present invention relates to new yellow couplers of formula (I) for colour photographic materialswhereinR1 represents alkyl or hetaryl,R2 represents halogen, alkoxy, aryloxy,R3 represents alkoxycarbonyl (-COOR'), carbamoyl (-CONHR'R''), urethane (-NHCOOR'),R4 represents a substituent,R5 represents alkyl or aryl, andR6 represents hydroxy-(ethyloxy)n, where n=1 to 2 andto a colour photographic material containing said couplers of formula (I).
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