METHOD OF PRODUCING TRANSPARENT AND COLORED RESINOUS FILM BY DIFFERENTIAL POLYMERIZATION OF COMPOITIONS OF POLYMERIZABLE MONOMERS AND POLYMERS FROM WATER-SOLUBLE AND SOLVENT SOULUBLE MATERIALS PROVIDING POLYMERS DERIVED FROM THE CONDENSATION OR COMBINED ADDITION AND CONDENSATION REACTION OF (A) A FORMALDEHYDE MATERIAL, (B) A PHOTOSENSITVE AMIDE OF AN OLEFINIC CARBOXYLIC ACID OR THE PHOTOSENSITVE DERIVATIVES THEREOF, AND (C) A CYANAMIDE DERIVATIVE AS A MEMBER OF THE GOUP CONSISTING OF THIOUREA, UREA, GUANIDINE AND MELAMINE, DERIVATIVES, AND MIXTURES THEREOF, WITH OR WITHOUT (D) THE SOLUBLE MONO AND POLYVALENT SALTS AND SALT REAGENTS USEFUL IN PHOTOSENSITIVITY, WHICH COMPOSITIONS AND POLYMERS ARE PHOTOPOLYMERIZABLE IN THE PRESENCE OF A LIGHT ACTIVATED CATALYST TO PRODUCE PHOTOPOLYMER MASSES BY ADDITION POLYMERIZATION AND SIMULTANEOUSLY THEREWITH OR BEFORE OR AFTER CONDENSATION POLYMERS ARE FORMED.