Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified radiation sensitive composition with color...
Patent
1998-06-26
2000-01-04
Baxter, Janet
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified radiation sensitive composition with color...
430549, 430555, 430359, 430562, G03C 7333, G03C 732
Patent
active
060108398
ABSTRACT:
A multilayer silver halide color photographic element is disclosed comprising a support bearing a light-sensitive silver halide emulsion layer and a non-diffusible yellow-colored magenta dye-forming masking coupler of the following formula ##STR1## wherein COUP is a magenta dye-forming coupler having the azo group attached to its coupling position; ARYL represents an aromatic group, including optionally further substituted phenyl, naphthyl or heteroaryl groups; m represents an integer of from 1 to 4; each L.sup.1 represents a divalent linking group, preferably --O(CH.sub.2).sub.y --, --NHCO(CH.sub.2).sub.y --, or --NRCO(CH.sub.2).sub.y --, where R represents an alkyl or aryl group and y represents an integer from 1 to 4; each k is either 0 or 1; each L.sup.2 represents --NHSO.sub.2 --, --NHCO--, --SO.sub.2 NH--, or --CONH--, preferably at least one L.sup.2 group being --NHSO.sub.2 -- or --SO.sub.2 NH--, more preferably --NHSO.sub.2 --; each Z represents --SO.sub.3 M or --PO.sub.3 M, where M represents H or a counter ion such as Na, K, Li, or NH.sub.4 ; and n represents an integer of from 1 to 5, with the provisos that when at least one L.sup.1 or L.sup.2 group comprises an --NHSO.sub.2 -- or --SO.sub.2 NH-- group then the total number of Z group substituents on the coupler is at least 2, and when no L.sup.1 or L.sup.2 group comprises an --NHSO.sub.2 -- or --SO.sub.2 NH-- group then the total number of Z group substituents on the coupler is at least 3, and if k is 0 for a substituent on the ARYL group then the L.sup.2 group for that substituent is either --NHSO.sub.2 -- or --NHCO--. Masking couplers comprising the requisite number and types of L.sup.1, L.sup.2 and Z groups in accordance with the invention have been found to form self-assembled micellar aggregates in water, and accordingly may be directly incorporated in aqueous solutions without the need for a dispersion making step. Further, such couplers exhibit good activity in the reaction with oxidized developer even in the absence of permanent solvent or plasticizer.
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Chari Krishnan
Crawley Michael W.
Sowinski Allan F.
Anderson Andrew J.
Baxter Janet
Eastman Kodak Company
Walke Amanda C.
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