Solutions and dispersions of the photopolymerizable compositions can be made with such solvents as aromatic hydrocarbons, e.g. benzene, toluene and xylene; chlorinated hydrocarbons, e.g. chloroform, carbon tetrachloride, trichloroethylene and chlorotoluene; ketones, e.g. methyl ethyl ketone, diethyl ketone and methyl isobutyl ketone and blends of such solvents.