NEGATIVE-WORKING LITHOGRAPHIC PRINTING PLATE PRECURSOR AND USE

• Main Authors: WERNER SAIJA, SIMPSON CHRISTOPHER, VIEHMANN PHILIPP
• Format: Patent
• Language: Chinese; English
• Published: 13.08.2019
• Subjects: APPARATUS SPECIALLY ADAPTED THEREFOR; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY; LINING MACHINES; MATERIALS THEREFOR; ORIGINALS THEREFOR; PERFORMING OPERATIONS; PHOTOGRAPHY; PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES; PHYSICS; PRINTING; PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTINGSURFACES; STAMPS; TRANSPORTING; TYPEWRITERS

A lithographic printing plate precursor has an infrared radiation- sensitive imageable layer that includes one or more free radically polymerizable components, an initiator composition that provides free radicals upon exposure of the infrared radiation-sensitive imageable layer to infrared radiation, one or more infrared radiation absorbers, and optionally, a polymeric binder different from the one or more free radically polymerizable components. The initiator composition comprises an iodonium tetraaryl borate that is represented by the following formula (I): wherein Ar is independently unsubstituted phenyl or naphthyl groups, or substituted phenyl or naphthyl groups each having one or more electron-donating substituents; and R is a linear or branched organic group comprising 0 to 3 oxygenatoms and 2 to 5 carbon atoms, provided that R is directly attached to the oxygen atom with one of the carbon atoms. 一种平版印刷版前体具有红外辐射敏感的可成像层，所述红外辐射敏感的可成像层包括一种或更多种可自由基聚合的组分、在所述红外辐射敏感的可成像层暴露于红外辐射时提供自由基的引发剂组合物、一种或更多种红外辐射吸收剂、和可选地