Photographic material and process

Details Photographic material and process Photographic material and process

G - Physics

03

C

96/101

G03C 1/60 (2006.01) G03C 1/34 (2006.01) G03C 1/40 (2006.01) G03C 7/305 (2006.01)

Patent

CA 2013314

-0- PHOTOGRAPHIC MATERIAL AND PROCESS Abstract of the Disclosure A novel blocked photographically useful compound comprises a new blocking group that (a) comprises two electrophilic groups, the least electrophilic of which is bonded directly or through a timing group to the photographically useful group (PUG) of the compound, (b) is capable of reacting with a dinucleophile reagent, and (c) has the two electrophilic groups separated from each other by a bond or unsubstituted or substituted atom that enables nucleophilic displacement to occur with release of PUG when the compound is reacted with a dinucleophile reagent. Such a blocked photographically useful compound is useful in a photographic material and process to provide increased stability and enable more rapid release of the photographically useful group upon reaction with a dinucleophile reagent.

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