摘要:
Infrared absorbing compounds are disclosed. The compounds are co-polymers that comprise covalently attached ammonium, sulfonium, phosphonium, and/or iodonium cations, and infrared absorbing cyanine anions that have two to four sulfonate groups and /or sulfate groups, and/or infrared absorbing oxonol anions. The infrared absorbing compounds can be used in aqueous developable lithographic printing plate precursors.
摘要:
Infrared absorbing compounds are disclosed. The compounds are co-polymers that comprise covalently attached ammonium, sulfonium, phosphonium, and/or iodonium cations, and infrared absorbing cyanine anions that have two to four sulfonate groups and /or sulfate groups, and/or infrared absorbing oxonol anions. The infrared absorbing compounds can be used in aqueous developable lithographic printing plate precursors.
摘要:
Imageable elements with improved dot stability are disclosed. The imageable elements comprise a layer of an imageable composition over a support. The imageable composition comprises an infrared absorbing compound, an acid generator, an acid activatable crosslinking agent, a polymeric binder, and about 0.01 wt% to 1 wt% of an added onium compound. The elements may be thermally imaged and developed to produce images useful as lithographic printing plates.