Thiazolyl coupler compositions and photographic elements suited

Details Thiazolyl coupler compositions and photographic elements suited Thiazolyl coupler compositions and photographic elements suited

1978-07-27

1979-12-11

Brown, J. Travis

130140, G03C 176, G03C 724

Patent

active

041781830

ABSTRACT:
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 particles 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 photographic elements, such as motion picture projection films.

REFERENCES:
patent: 2266452 (1941-12-01), Vittum et al.
patent: 2373821 (1945-04-01), Frohlich et al.
patent: 3458315 (1969-07-01), Loria
patent: 3476563 (1969-11-01), Loria
Research Disclosure No. 13460, Jun. 1975.

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