Abstract: Compatible, aqueous developable photopolymerizable composition consisting essentially of (a) 22 to 32% by wt. of a monomeric compound having at least two terminal ethylenic groups, (b) 0.1 to 5.0% by wt of a photoinitiator or initiator system, (c) 40 to 80% by wt of a binder system which is the reaction product of (1) 65 to 87 parts by wt of a terpolymer of methylmethacrylate, butylmethacrylate and methacrylic acid as defined, (2) 5 to 20 parts by wt of a polyamide resin and (3) 5 to 20 parts by wt of a copolymer of vinyl pyrrolidone and vinyl acetate, (d) 0.03 to 0.10% by wt of a thermal polymerization inhibitor, and optionally up to 18% by wt of a plasticizer and up to 2.0% by wt of a tertiary amine capable of salt formation with a carboxylic acid. Aqueous developable photopolymerizable elements comprise a support bearing a layer of the composition. Relief printing plates can be prepared by imagewise exposing and developing the elements.

Abstract: Adhesive coated metal sheet, e.g., steel, aluminum, bearing an adhesive layer comprising an ethyl acrylate, methyl methacrylate and acrylic acid copolymer; styrene and maleate ester copolymer, aqueous colloidal silica, and aqueous latex of a self-curing interpolymer. Pigments, e.g., ferric oxide, and antifoaming compounds can be present in the adhesive layer which is useful in adhering aqueous soluble photopolymerizable layers to the support. The elements formed are useful for printing.