Patent ID: 7348123

Claim:
A process for producing a flexographic printing plate comprising: i) providing a photosensitive element comprising a) a support; b) at least one photopolymerizable elastomeric layer on the support having a composition comprising at least one thermoplastic binder; at least one compound capable of addition polymerization; and a photoinitiator; wherein the layer has a melt flow index of at least 4 grams/10 min. under a 2.16 kilogram weight at 140° C., and wherein the layer when exposed to actinic radiation to determine a log-log plot of the dynamic storage modulus (G′) versus frequency (f), exhibits a slope of less than 0.18; ii) imagewise exposing the element to actinic radiation to polymerize areas exposed to radiation; and iii) thermally treating the element of ii) to remove unpolymerized material from the element and form a relief surface.