Cyan dye-forming couplers and photographic materials...

Details Cyan dye-forming couplers and photographic materials... Cyan dye-forming couplers and photographic materials...

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G03C 7/34 (2006.01) C07C 309/70 (2006.01) C07C 311/03 (2006.01) C07C 311/08 (2006.01) C07C 311/21 (2006.01) C07C 311/29 (2006.01) G03C 7/305 (2006.01)

Patent

CA 1314749

CYAN DYE-FORMING COUPLERS AND PHOTOGRAPHIC MATERIALS CONTAINING SAME Abstract Novel phenolic cyan dye-forming couplers are disclosed. The coupler compounds contain a p-cyano- phenylureido group in the 2- position and an acylamino group in the 5- position of the phenolic ring. The acylamino group contains bulky substituents to provide steric interaction within the coupler molecule as well as within the dye molecule derived therefrom. The coupler compounds are useful in photographic recording materials.

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