Aqueous soluble infrared antihalation dyes

Details Aqueous soluble infrared antihalation dyes Aqueous soluble infrared antihalation dyes

1990-10-31

1992-04-21

Springer, David B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

430522, 548478, C07D40308

Patent

active

051070634

ABSTRACT:
Sulfoalkyl substituted indolenine dyes that absorb infrared radiation and photosensitive elements containing said dyes are disclosed. These dyes are useful as antihalation dyes in infrared sensitive photographic elements which show dye low stain. These dyes are represented by the following structure: ##STR1## wherein X is F, Cl, or Br; R is a hydrocarbon moiety containing from two to about five carbon atoms; and Y is a cation. In a preferred embodiment X is Cl. In a more preferred embodiment R is --(CH.sub.2).sub.3 -- or --(CH.sub.2).sub.4 --.

REFERENCES:
patent: 4871656 (1989-10-01), Parton et al.
patent: 4876181 (1989-10-01), Proehl et al.
patent: 4882265 (1989-11-01), Laganis et al.

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