Thiazolyl couplers, coupler compositions and photographic...

Details Thiazolyl couplers, coupler compositions and photographic... Thiazolyl couplers, coupler compositions and photographic...

C - Chemistry, Metallurgy

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96/118, 260/310.

C07D 277/46 (2006.01) G03C 1/40 (2006.01) G03C 7/24 (2006.01) G03C 7/34 (2006.01)

Patent

CA 1106384

- i - Abstract of the Disclosure Ballasted 1-hydroxy-2-naphthamide couplers which are N-substituted with a thiazolyl group that is in turn substituted with a phenyl group are disclosed as well as compositions and photographic elements containing these couplers in coupler solvents. The coupler solvent parti- cles are comprised of a combination of a coupler solvent and the coupler capable of permitting the formation of a microcrystalline dye. Surprisingly these microcrystalline dyes exhibit a broadened absorption characteristic in the 750 to 850 nm region of the spectrum. Dye images having such absorption characteristics are particularly suited to forming integral infrared absorbing sound tracks in photo- graphic elements, such as motion picture projection films.

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