E.i. Dupont De Nemours and Company

Bernard Feinberg

Richard P Pankratz

Michael Fryd

James William O'Neil

Ernst Leberzammer

David W Swatton

Manfred Schober

Udo Weikart

James A Klein

A process for preparing a photohardenable elastomeric element having increased exposure latitude, said element having a support and a photohardenable layer wherein at least (a) a thermoplastic-elastomeric polymeric binder comprising a copolymer of isoprene, (b) a liquid plasticizer, and (c) a petroleum wax, are premixed is described.

Process for preparing photohardenable elastomeric element having

A photosensitive element comprising (a) a support, (b) a thermally hardened layer containing the reaction product of (i) either an organic polymer having reactive segments and nonreactive segments or a blend of organic polymers wherein at least one polymer has reactive segments and at least one polymer has nonreactive segments (ii) a crosslinking agent and (iii) a catalyst and (c) a photohardenable layer is described.

Photosensitive element having support with adjustable adhesion

The invention relates to a process for producing flexographic printing reliefs by:

Process for the production of flexographic printing reliefs

This invention relates to a process for making a printing relief from a flexographic photosensitive element comprising:

Process for making flexographic printing plates with increased

Process for dot-etching a photopolymer layer no more than 0.015 mm thick and O.D. greater than 3.0 in the 350 to 400 nm region containing tone correctable image comprised of polymeric dots and lines having hardened upper skin which rests on softer undervolume having less degree of polymerization or hardening wherein a staging solution comprising a film forming hydrocarbon resin Mn of 500 to 3000 containing greater than 50% by weight aliphatic hydrocarbons, 25 to 50% by weight; aliphatic hydrocarbon solvent inert to photopolymer layer, 50 to 75% by weight, and optionally a dye or colorant and/or particulate material is applied to areas desired to protect; the solution is dried; the dot and line image is reduced by undercutting by mechanical action with a solvent of the softer undervolume and removing hardened polymer from the edges of the image; and the stage is removed by solvent therefor.

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Englishtown, NJ, United States of America

Bernard Feinberg