HYDROPHILIC COPOLYMERS AND THEIR USE IN REPROGRAPHY

• Main Authors: LUTZ, SILVIA, PLIEFKE, ENGELBERT, FAUST, RAIMUND J
• Format: Patent
• Language: English; French
• Published: 22.01.1992
• Edition: 5
• Subjects: APPARATUS SPECIALLY ADAPTED THEREFOR; CHEMISTRY; CINEMATOGRAPHY; COMPOSITIONS BASED THEREON; ELECTROGRAPHY; HOLOGRAPHY; LINING MACHINES; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING,INKING, DAMPING, OR THE LIKE; MATERIALS THEREFOR; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; ORIGINALS THEREFOR; PERFORMING OPERATIONS; PHOTOGRAPHY; PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES; PHYSICS; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM; PRINTING; PRINTING PLATES OR FOILS; STAMPS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TYPEWRITERS

The invention relates to a hydrophilic copolymer having the general structure: in which R1 denotes H, CH3 or C2H5, R2 denotes an alkyl or cycloalkyl radical having 1 to 17 carbon atoms, R3 denotes CH3, C2H5 or C3H7, m is 2, 3 or 4 and n, o, p denote the fractions of the monomer units having acidic side groups, neutral, non-ionizable monomer units and monomer units having basic side groups respectively, in mol%, with n + o + p = 100 mol%, with the proviso that n and p are each ? 2 mol%, wherein the copolymer is a linear copolymer having a random structure of monomer units. The copolymer is useful as a hydrophilizing agent for lithographic and offset printing plates.