2,5-Dicarbonylaminophenol dye-forming couplers

Details 2,5-Dicarbonylaminophenol dye-forming couplers 2,5-Dicarbonylaminophenol dye-forming couplers

1977-03-03

1978-11-07

Schilling, Richard L.

Gas separation: apparatus

Electric field separation apparatus

Collecting electrode details

96 566, G03C 700, G03C 140

Patent

active

041243960

ABSTRACT:
2,5-Dicarbonylaminophenols containing a p-alkyl-sulfonylaminophenoxy terminal moiety or a p-alkylamino-sulfonylphenoxy terminal moiety in the five-position substituent of the molecule are color-forming couplers useful in photographic silver halide emulsions and elements.

REFERENCES:
patent: 2484477 (1949-10-01), Weissberger et al.
patent: 2536010 (1950-12-01), Schmidt et al.
patent: 2569906 (1951-10-01), Starke
patent: 2772162 (1956-11-01), Salimen et al.
patent: 3222176 (1965-12-01), Jaeken
patent: 3758308 (1973-09-01), Beavers et al.
patent: 3880661 (1975-04-01), Lau et al.

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