Photographic material having releasable compound

Details Photographic material having releasable compound Photographic material having releasable compound

G - Physics

03

C

96/105

G03C 7/32 (2006.01) G03C 7/305 (2006.01)

Patent

CA 1338127

Photographic elements are disclosed having a first coupler represented by the formula: COUP1-T-INH-CH2-Q wherein COUP1 is a coupler moiety, T is a timing group that is bonded to the coupler moiety at a coupling position and that is cleaved from -INH-CH2-Q after it is released from the coupler moiety upon exposure and processing of the element, and INH-CH2-Q is a development inhibitor moiety wherein Q is a ballasting group, and a second coupler represented by the formula: COUP2-(TIME)n-S-R1-R2 wherein COUP2 is a coupler moiety, TIME is a timing group, n is 0 or 1, R1 is a divalent linking group that does not include a heterocyclic ring attached directly to S, and R2 is a water solubilizing group.

602593

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