Light-sensitive supersensitized silver halide emulsions
Abstract
Abstract A NEW SUPERSENSITIZING COMBINATION PARTICULARLY USEFUL FOR A GREEN-LIGHT-SENSITIVE GELATIONS SILVER HALIDE PHOTOGRAPHIC EMULSION COMPRISING AT LEAST ONE CARBOCYANINE DYE OF THE GENERAL FORMULA 1 AND AT LEAST ONE MONO- 0004DYE OF T METHINE CYANINE DYE OF THE GENERAL FORMULA 2, SAID COMBINATION BEING SO SELECTED THAT AT LEAST ONE SUBSTITUENT ON A NITROGEN ATOM IN A HETEROCYCLIC RING OF THE SAID TWO DYES HAS A CARBOXYALKYL OR SULFOALKYL MOIETY. THE GENERAL FORMULA AS 1 AND 2 ARE ((-N(-R1)-(5-Y1-1,2-PHENYLENE)-Z1-)>C=CH-(R2-)C=CH-C<( =N+(-R3)-(5-Y2-1,2-PHENYLENE)-Z1-)) X(-)N-1 (I) (1-R4,2-((-Z2-(1,2-PHENYLENE)-N+(-B5)=)>C-CH=),6-Y3-1,2- DIHYDROQUINOLINE) X(-)M-1 WHEREIN R1, R3, R4 AND R5 ARE EACH LOWER ALKYL, SUBSTSTITUTED ALKYL, HYDROXYALKYL, SUBSTITUTED HYDROXYALKHYL OR CARBOXYALKYL GROUP OR ITS DERIVATIVE, OR A SULFOALKYL GROUP OR ITS DERIVATIVE; R2 IS LOWER ALKYL GROUP; Z1 AND Z2 ARE EACH S OR SE; Y1 AND Y2 ARE EACH HYDROGEN, HALOGEN, OR LOWER ALKYL GROUP; Y3 IS HYDROGEN, LOWER ALKYL OR LOWER ALKOXY GROUP; X IS AN ANION; AND N AND M ARE EACH 1 OR 2.
Inventors
- 👤 K Sakazume
- 👤 S Sato
Bibliographic Details
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