| abstract |
A substrate useful for forming lithographic printing plate precursors includes a metal or polymer support and an interlayer comprising a trialkoxysilyl polyethylene glycol acrylate having the following Structure (I): n n n n n n n n n n wherein R 1 and R 2 are independently hydrogen or C 1 to C 6 alkyl, C 1 to C 6 alkenyl, C 1 to C 6 alkoxy, C 1 to C 6 acyl, C 1 to C 6 acyloxy, phenyl, halo, or cyano groups, or R 1 and R 2 together can form a cyclic group, R 3 is hydrogen, or a C 1 to C 6 alkyl, phenyl, halo, or cyano group, R 4 and R 5 are independently hydrogen or methyl groups, R 6 is hydrogen or a C 1 to C 12 alkyl group, X 1 is —O— or —NR— wherein R is hydrogen or an alkyl or aryl group, X 2 is —NR′— wherein R′ is hydrogen or an alkyl or aryl group, m is an integer of from 15 to 200, and n is an integer of from 1 to 12. The lithographic printing plates can be negative-working and particularly useful for on-press development and have a sulfuric acid-anodized aluminum support. |