Kodak Graphic Communications Gmbh

Eastman-kodak Company

Tanja Ebhardt

Harald Baumann

Bernd Strehmel

Ulrich Fiebag

Detlef Pietsch

Udo Dwars

Dietmar Frank

Axel Draber

Friederike Von Gyldenfeldt

Ulrike Dallmann

Radiation-sensitive element comprising (a) a substrate and (b) a radiation-sensitive coating comprising (i) at least one component selected from photoinitiators and sensitizer/coinitiator systems which absorbs radiation of a wavelength in the range of 250 to 1,200 nm; (ii) at least one oligomer A of formula (I) wherein X, Xand Xare independently selected from straight-chain or cyclic C-Calkylene and C-Carylene, a heterocyclic group, a heteroaromatic group and combinations of two or more of the above, R, Rand Rare independently selected from (II) and (III) with the proviso that (1) n=0 in at least one of the groups R, Rand R, and (2) n&#x3e;2 in at least one of the groups R, Rand R, and (3) at least one group Ris different from H in formula (III). 

Photopolymer composition suitable for lithographic printing plates

Process for the posttreatment of an imaged lithographic printing plate comprising (a) providing a lithographic printing plate comprising image areas and non-image areas on a lithographic substrate; (b) bringing the lithographic printing plate of step (a) into contact with a solution comprising a hydrophilic polymer comprising structural units derived from the following compounds: (i) a compound comprising both polyalkylene oxide chains and at least one structural unit which is free-radical polymerizable, and (ii) a monomer capable of copolymerizing with the free-radical polymerizable structural unit of (i) and furthermore comprising at least one acidic functional group with pK&#x3c;5, wherein the acidic functional group can be present as a free acid group or in the form of a salt; (c) drying.

Method for making a lithographic plate

A process for the post-treatment of an imaged lithographic printing plate comprises (a) Contacting a lithographic printing plate having image areas and non-image areas on a lithographic substrate with a solution comprising at least one phosphono-substituted siloxane of the following general formula (I) that is defined herein and (b) drying. 

Phosphono-substituted siloxanes suitable as interlayer material in lithographic substrates and for post-treating developed lithographic printing plates, obtainable by reacting (a) a first organosilicon compound of the general formula (I) and (b) a second organosilicon compound of the general formula (II).

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Osterode, Germany

Tanja Ebhardt