Liquid crystalline filter dyes for imaging elements

摘要

This invention comprises dispersion comprising a solvent having dispersed therein a liquid-crystal forming dye of structural Formula I:wherein:D is a light-absorbing chromophore other than a cyanine dye or a barbituric acid oxonol dye;each Y contains an ionic or a nonionic solubilizing substituent or a group with a pKa value of less than 4 in water;each X is a nonionic substituent;n is 0 to 10;m is 0-10; andthe resulting dye forms a liquid-crystalline phase in solvent.The dispersion is particularly useful in imaging and photographic elements.