Process for surface treatment of photosensitive elastomeric...

Details Process for surface treatment of photosensitive elastomeric... Process for surface treatment of photosensitive elastomeric...

G - Physics

03

F

96/250

G03F 7/40 (2006.01)

Patent

CA 1174890

TITLE PROCESS FOR BROMINE SURFACE TREATMENT OF PHOTOSENSITIVE ELASTOMERIC FLEXOGRAPHIC PRINTING PLATES ABSTRACT OF THE DISCLOSURE Process for providing improved solvent resistant surfaces of relief flexographic printing plates prepared by imagewise exposure and liquid development of the unexposed areas of a layer of a photosensitive elastomeric composition comprising a polymer of a conjugated diolefin hydrocarbon, and a monomeric compound wherein, after drying, the developed surface is in either order (1) postexposed to actinic radiation, and (2) contacted for about 1 seconds to 40 minutes with an aqueous treatment solution of an alkali monopersulfate, e.g., 2KHSO5?KHSO4?K2SO4 and a bromide salt, e.g., potassium bromide.

402367

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