Multilayer imageable elements

Details Multilayer imageable elements Multilayer imageable elements

2005-05-17

2005-05-17

Schilling, Richard L. (Department: 1752)

Radiation imagery chemistry: process, composition, or product th

Imaged product

Multilayer

C430S271100, C430S302000, C430S309000, C430S964000

Reexamination Certificate

active

06893783

ABSTRACT:
Multilayer, positive working, thermally imageable elements are disclosed. The elements produce bakeable lithographic printing plates that are resistant to press chemistries. The elements have a substrate, an underlayer, and a top layer. The underlayer comprises a resin or resins having activated methylol and/or activated alkylated methylol groups, such as a resole resin, and a polymeric material that comprises, in polymerized form, (a) methacrylic acid; (b) N-phenylmaleimide, N-cyclohexylmaleimide, N-benzylmaleimide, or a mixture thereof; and (c) one or more monomers of the structure:in which:R1is H or methyl; X is —(CH2)n—, where n is an integer from 2 to 12; —(CH2—CH2—O)p—CH2—CH2—, where p is an integer from 1 to 3; or —Si(R′)(R″)— where R′ and R″ are each independently methyl or ethyl; and m is 1, 2, or 3.

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