Film stock for dichroic dye images

Claim 1

AN ORGANIC-DYE, LIGHT-POLARIZING FILM MATERIAL HAVING A HIGH DENSITY AND A RESULTING IMPROVED POLARIZING EFFICIENCY, SAID FILM MATERIAL COMPRISING A TRANSPARENT, HIGH MOLECULAR WEIGHT, WATER-SOLUBLE, HYDROXYL-CONTAINING VINYL POLYMER HAVING ITS MOLECULES ORIENTED IN A GIVEN DIRECTION, A DICHROIC DIRECT COTTON DYE CONTAINED IN AT LEAST A GIVEN PORTION OF SAID FILM MATERIAL SO AS TO RENDER SAID PORTION LIGHT POLARIZING, AND A MORDANT HAVING AN AFFINITY FOR SAID DICHROIC DIRECT COTTON DYE WHICH ENHANCES THE RECEPTIVITY OF SAID MOLECULARLY ORIENTED VINYL POLYMER FOR SAID DICHROIC DIRECT COTTON DYE AND HOLDS SAID DYE SUBSTANTIALLY IMMOBILIZED, SAID MORDANT COMPRISING AN ORGANIC, HIGH MOLECULAR WEIGHT, POLYMERIC COMPOUND CONTAINING BASIC NITROGEN, SAID LIGHT-POLARIZING FILM MATERIAL, BY REASON OF SAID COACTION OF THE VINYL POLYMER, DYE AND MORDANT, HAVING A DYE DENSITY WHICH IS SUBSTANTIALLY HIGHER THAN THAT OF AN ORGANIC-DYE LIGHT POLARIZER FORMED, RESPECTIVELY, FROM A SIMILAR HYDROXYL-CONTAINING VINYL POLYMER AND A SIMILAR DICHROIC DIRECT COTTON DYE BUT WHICH IS DEVOID OF SAID POLYMERIC COMPOUND CONTAINING BASIC NITROGEN.