Block copolymers with perfluorinated aliphatic side groups of at least 5 carbon atoms, used for the production of surfaces with reversibly changeable hydrophilicity, e.g. on printing plates, or for marking plastics

摘要

Block copolymers with side groups containing perfluorinated aliphatic carboxylic acid residues with at least 5 carbon atoms. Independent claims are also included for (a) a process for the production of these polymers from block copolymers with isoprene units contained unsaturated double bonds, comprising block(s) (A) derived from mono-unsaturated monomer units and block(s) (B) of polymerized isoprene units, by hydroxylating the polymer and esterifying the hydroxyl groups with perfluorinated aliphatic carboxylic acids with at least 5 carbon atoms or their derivatives; (b) mouldings and coatings containing these block copolymers; (c) information storage media and reusable printing plates with these block copolymers on the surface.