C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
96/32, 260/176.1
C09B 29/00 (2006.01) C09B 29/28 (2006.01) G03C 1/40 (2006.01) G03C 8/10 (2006.01)
Patent
CA 1249473
-0- SUBSTITUTED 4-NITROPHENYLAZO-1-NAPHTHOL CYAN DYES HAVING IMPROVED LIGHT STABILITY Abstract of the Disclosure Photographic elements and diffusion transfer assemblages employing a nondiffusible compound cap- able of releasing at least one diffusible cyan dye moiety, and having the formula: Image wherein: (a) J represents SO2 or CO, (b) R represents a substituted or unsubstituted alkyl group of from 1 to about 10 carbon atoms or a substituted or unsubstituted aryl group of from 6 to about 12 carbon atoms, (c) G represents a hydroxy group, a salt thereof, or a hydrolyzable precursor thereof, (d) CAR represents a ballasted carrier moiety, and (e) D1, D2, and D3 each independently represents H or one or more electron-withdrawing groups selected from -SO2Y1, -CONY1Y2, -Cl, -COY1, -C?N and -SO2NY1Y2, where Y1 and Y2 each independently represents hydrogen, a substituted or unsubstituted alkyl group of from 1 to about 10 carbon atoms or a substituted or unsubstituted aryl group of from 6 to about 12 carbon atoms. The released dyes have improved stability to light.
471283
Merkel Paul B.
Warren Harold C. III
Weber Lynda D.
Gowling Lafleur Henderson Llp
Merkel Paul B.
Warren Harold C. III
Weber Lynda D.
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