| 摘要 |
The invention relates to a hydrophilic copolymer having the general structure: <IMAGE> 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.
|
