High resolution, solvent resistant, thin elastomeric printing plates

摘要

The present invention relates to a printing element comprising at least one polymer layer on a substrate which has photoimageable constituents and a chemically functionalized polymer to make the polymer layer either more hydrophobic or hydrophilic. In one embodiment of the present invention, the printing element comprises two adjacent polymer layers on a substrate in which the photoimaged layer comprises a polymer chemically modified with hydrophobic fluoroalkyl side groups to provide differential wetting with hydrophilic inks.

主权项

1. A process comprising:
a) providing a hydrophilic substrate b) depositing a polymer layer on the substrate, the polymer layer comprising:
i) an elastomeric polymer containing hydrophobic fluoroalkyl side groups;ii) a photoinitiator; andiii) monomers selected from the group consisting of: and mixtures thereof; c) imaging a pattern on the polymer layer forming a crosslinked polymer pattern and a non-crosslinked polymer pattern; and d) developing the imaged polymer layer wherein the non-crosslinked polymer pattern is dissolved.