Organic polymers

An amphiphilic b lock copolymer of formula

• wherein
• A is a hydrophobic segment selected from the group consisting of a polysiloxane, a perfluoroalkyl polyether, a polymer of a conjugated aliphatic or alicyclic diene, a polymer of an alkyne or dialkyne, an optionally partially hidrated copolymer of a conjugated diene and a hidrophilic vinylic monomer, and a polysulfone;
• B is a hidrophilic segment of formula
• wherein R1 is hydrogen, C1-C12-alkenyl which is in each case unsubstituted or substituted by hydroxy or fluoro and/or uninterrupted or interrupted by oxygen, an ester and/or an urethane group, or is C5-C8-cycloalkyl, phenyl or benzyl, R is C1-C12-alkylene C7-C12-aralkylene or unsubstituted or C1-C4-alkyl substituted phenylene, X is a group —O—, —S—, —NR′— or —N(R′)2+- An− wherein R′ is hydrogen or C1-C4-alkyl and An− is an anion, and p is an integer from 2 to 150;
• and
• L is a bivalent linking group of formula
• —X1—C(O)—NH—R2—NH—C(O)—X2— (3b),
• —X1—C(O)—R2—C(O)—X2— (3c),
• —X1—C(O)—(R*)c— (3d),
• —C(O)—X1— (3e), or
• —X1—C(O)—X2— (3f),
• wherein X1 and X2 are each independently of the other a group —O—, —S— or —NR0—;
• R0 is hydrogen or C1-C4-alkyl;
• R2 is linear or branched C1-C18-alkylene, or unsubstituted or C1-C4-alkyl- or C1-C4-alkoxy-substituted C6-C10-arylene, C7-C18-aralkylene, C6-C10-arylene, C1-C2-alkylene-C6-C10-arylene, C3-C8-cycloalkylene-C3-C8-cycloalkylene or C1-C6-alkylene-C3-C8-cycloalkylene or C1-C6-alkylene-C3-C8-cycloalkylene-C1-C6-alkylene;
• and R* is C1-C4-alkylene or benzylene, c is 1 if B is a radical of formula (2) and is 0 if B is a radical of formula (2a), and n is an integer ≧1
• wherein Q1 is a radical of formula
• wherein X3 is —O— or —NH″, R″ is hydrogen or C1-C4-alkyl, X4 is a group —C(O)—O—, —O—C(O)—NH—C(O)—O—, (alk) is C1-C8-alkylene, z is an integer of 0 or 1, and R10 is C1-C12-alkylene, phenylene or C7-C12-phenylenealkylene;
• and
• wherein Q2 is a radical of the formula
• wherein Q3 is, for example, a radical of formula
• (alk′) is linear or branched C2-C12-alkylene, alk″ is linear or branched C1-C12-alkylene, R11 is an olefinically unsaturated copolymerisable radical having from 2 to 24 carbon atoms which may be further substituted, and each of s and t independently of the other is the number 0 or 1;
• provided that if R1 comprises an alkenyl group, then Q1 and Q2 may further be selected from the group consisting of C1-C2-alkyl radicals and benzyl.