Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified radiation sensitive composition with color...
Patent
1989-04-26
1991-05-28
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified radiation sensitive composition with color...
430218, 430219, 430222, 430223, 430544, 430559, 430607, 430610, 430611, 430598, 430621, 430955, 430956, 430957, 430958, 430959, 430960, G03C 7305
Patent
active
050194925
ABSTRACT:
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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Buchanan John M.
Cook Ewell R.
Mooberry Jared B.
Proehl Gary S.
Singer Stephen P.
Bowers Jr. Charles L.
Eastman Kodak Company
Knapp Richard E.
Wright Lee C.
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