Radiation-sensitive compositions and elements containing poly(vinyl hydroxyaryl carboxylic acid ester)s
AssigneeEastman Kodak Company
InventorsMoshe Levanon, Georgy Bylina, Vladimir Kampel, Larisa Postel, Marina Rubin, Tanya Kurtser
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Abstract
A radiation-sensitive composition can be used to prepare positive-working imageable elements having improved sensitivity and solvent resistance. These elements are useful for making lithographic printing plates and printed circuit boards. The composition includes a water-insoluble polymeric binder that has at least 20 mol % of recurring units comprising hydroxyaryl carboxylic acid ester groups, some of which can be substituted with cyclic imide moieties.
Claims18
A positive-working imageable element comprising a substrate having thereon an imageable layer comprising a water-insoluble polymeric binder, and a radiation absorbing compound,
- wherein said polymeric binder comprises recurring units that have pendant hydroxyaryl carboxylic acid ester groups and that represent at least 20 mol % of the total recurring units.
A polymer that comprises recurring units represented by the following Structures (Ia) through (Ic):
- wherein the recurring units of Structure (Ia) are present at from 0 to about 22 mol %, the recurring units of Structure (Ib) are present at from about 0 to about 85 mol %, the recurring units of Structure (Ic) are present at from about 5 to about 40 mol %, provided that the recurring units represented by Structures (Ia) and (Ib) represent at least 20 mol %, based on total recurring units, R and R′ are independently hydrogen or substituted or unsubstituted alkyl groups, substituted or unsubstituted cycloalkyl groups, or halo groups, R1 is a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, or a substituted or unsubstituted aryl group other than a hydroxyaryl group, R2 is a hydroxyaryl group that is optionally substituted.
Dependencies are inferred from the claim text.