Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Treating polymer containing material or treating a solid...
Patent
1992-02-10
1992-10-20
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Treating polymer containing material or treating a solid...
528480, 528125, 528129, 528152, 528154, 528161, 528171, 528173, 528174, 528151, 430 96, 430175, 430176, 430192, 430197, 430270, 430281, 430303, C08F 600, C08G 400, C08G 814, C08G 818
Patent
active
051570181
ABSTRACT:
Polymers comprising perfluoroalkyl groups, reproduction layers containing these polymers and use thereof for waterless offset printing. The novel perfluoroalkyl 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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patent: 5021539 (1991-06-01), Armbruster et al.
Hoechst Aktiengesellschaft
Kight III John
Truong Duc
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