Polymeric compounds
AssigneeKodak Polychrome Graphics LLC
InventorsAlan Stanley Monk, James Laurence Mulligan
Life of this patent
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Abstract
Polymeric compounds for lithographic printing plates, especially plates for use in printing utilizing UV curable inks, may include a structural unit (I) 1 wherein R1 represents an optionally-substituted cyclic or alkyl group, x represents 0 or 1 and A represents an optionally-substituted alkylene group. A range of compounds having different solubilities in selected solvents may be prepared by varying the identity or group R1. Such components may be prepared by reacting an amine of formula R1NH2 with the maleic anhydride derivative corresponding to moiety 1.
Claims14
A lithographic printing member precursor which includes a polymeric compound having the structural unit 16
- wherein R1 represents an optionally-substituted cyclic or alkyl group and x represents 0 or 1.
A precursor according to any preceding claim, wherein x represents 0.
A precursor according to any preceding claim, wherein optional-substitutents of group R1 are selected from hydroxy;
- optionally-substituted alkoxy, hydroxyalkyloxy and —SO2NR2R3 groups, where R2 and R3 independently represent a hydrogen atom or an alkyl group;
- functional groups containing a radiation sensitive atom or group;
- functional groups which increase the heat sensitivity of said polymeric compound prepared in the process;
- dye-containing groups;
- groups which include an ethylenically-unsaturated double bond, and groups that may aid the adhesion of said polymeric compound prepared in the process to a substrate.
A precursor according to any preceding claim, wherein said polymeric compound having structural unit I is optionally derivatized by reaction with a compound containing a radiation sensitive atom or group;
- functional groups which increase the heat sensitivity of said polymeric compound prepared in the process;
- a dye containing group;
- a group which includes an ethylenically-unsaturated double bond;
- or a group that may aid the adhesion of said polymeric compound prepared in the process to a substrate of a printing member.
A precursor according to any preceding claim, wherein said polymeric compound having the structural unit I is provided in a first layer which is a radiation and/or heat sensitive layer which is arranged to be image-wise exposed to imaging radiation and/or heat, followed by optional development, to provide ink-accepting and non-ink-accepting areas.
Dependencies are inferred from the claim text.