Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified radiation sensitive composition with color...
Patent
1998-12-22
2000-12-19
Letscher, Geraldine
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified radiation sensitive composition with color...
430543, G03C 108
Patent
active
061625981
ABSTRACT:
A color photographic element includes a support, a silver halide emulsion layer, and associated therewith a yellow dye-forming coupler having the formula ##STR1## wherein R.sup.1 represents a tertiary alkyl group containing 4 to about 20 carbon atoms; R.sup.2 represents an alkyl, aryl, or heterocyclic group; X represents hydrogen or a substituent; Y and Z each independently represent a group consisting of those substituents having a Hammett sigma.sub.para constant greater than zero; and m and n is each 1 to 4.
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patent: 4791050 (1988-12-01), Ogawa et al.
patent: 5427898 (1995-06-01), Tang et al.
XP-000885148, "Solvent Control of Coupling Activity in Microcrystalline Coupler Dispersions"by John Texter, "IS&T's 47th Annual Conference/ICPS 1994, Vol. 1" pp. 344-348, IS&T Society for Imaging Science and Technology, Springfield, VA.
Cameron Robert G.
Tang Ping-Wah
Eastman Kodak Company
Kluegel Arthur E.
Letscher Geraldine
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