Radiation sensitive reproduction composition and element with pe

Radiation imagery chemistry: process – composition – or product th – Diazo reproduction – process – composition – or product – Composition or product which contains radiation sensitive...

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Details

430175, 430176, 430197, 430270, 430281, 430303, 430905, 430 96, G03C 7023, G03C 7032, G03C 7033

Patent

active

050064436

ABSTRACT:
Polymers comprising perfluoralkyl groups, reproduction layers containing these polymers and use thereof for waterless offset printing. The novel perfluoralkyl group-containing polymers comprise polymers or polycondensates and have, in each case as substituents on different carbon atoms of benzene rings, phenolic OH groups and perfluoroalkyl groups which are optionally attached through intermediate members. In particular, at least 10% of the polymer units carry perfluoroalkyl groups. These polymers are either formed by condensation of substituted phenols (e.g., 4-hydroxybenzoic acid-perfluoroalkyl ester) with an aldehyde, a ketone, or a reactive bismethylene compound or by reacting polymers containing phenolic OH groups (e.g., hydroxypolystyrene) or polycondensates containing reactive OH groups (e.g., phenol-formaldehyde resins) with a perfluoroalkyl group-containing compound (e.g., 2,2-dihydroperfluorodecanoic acid chloride). The novel polymers are particularly useful in radiation-sensitive reproduction layers which additionally contain at least one radiation-sensitive compound. Reproduction layers of this kind are applied as radiation-sensitive coatings to support materials for printing plates used in waterless offset printing.

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