C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 69/732 (2006.01) C07C 69/017 (2006.01) C07C 69/28 (2006.01) C07C 69/84 (2006.01) G03C 7/384 (2006.01) G03C 7/392 (2006.01)
Patent
CA 2042568
A-18079/A Process for stabilizing magenta couplers and the corresponding image dyes in photographic materials Abstract Compounds of the formula Image in which R, R1 and R2 are as defined in claim 1 are highly suitable for stabilizing magenta couplers in photographic materials.
Dubas Henri
Leppard David G.
Steinberg David H.
Ag Ciba-Geigy
Fetherstonhaugh & Co.
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