| abstract |
TITLE PHOTOPOLYMERIZABLE PRINTING PLATE FOR FLEXOGRAPHIC PRINTING ABSTRACT A photopolymerizable printing element comprising a photopolymerizable layer and an elastomeric layer, wherein the elastomeric layer contains, as a binder, one or more thermoplastic, elastomeric block copolymers made up of at least one polystyrene block and at least one polybutadiene, polyethylene, and/or polypropylene block. The polystyrene content of the binder or binder mixture is 10 to 35 percent by weight, the solution viscosity of the block copolymers for a 5.23% solution in toluene is greater than or equal to 5 mm2/s and the melt index, measured according to ASTM D 1238 P is less than or equal to 10 g/10 min. |