Patent ID: 6444776
Filing Date: 2002-09-03
Classification: C08G

Abstract:
An amphiphilic b lock copolymer of formula whereinA 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 â€”Oâ€”, â€”Sâ€”, â€”NRâ€²â€” or â€”N(Râ€²)2+- Anâˆ’ wherein Râ€² is hydrogen or C1-C4-alkyl and Anâˆ’ is an anion, and p is an integer from 2 to 150; and L is a bivalent linking group of formula â€”X1â€”C(O)â€”NHâ€”R2â€”NHâ€”C(O)â€”X2â€”â€ƒâ€ƒ(3b), â€”X1â€”C(O)â€”R2â€”C(O)â€”X2â€”â€ƒâ€ƒ(3c), â€”X1â€”C(O)â€”(R*)câ€”â€ƒâ€ƒ(3d), â€”C(O)â€”X1â€”â€ƒâ€ƒ(3e), or â€”X1â€”C(O)â€”X2â€”â€ƒâ€ƒ(3f), wherein X1 and X2 are each independently of the other a group â€”Oâ€”, â€”Sâ€” or â€”NR0â€”; 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 &gE;1 wherein Q1 is a radical of formula wherein X3 is â€”Oâ€” or â€”NHâ€³, Râ€³ is hydrogen or C1-C4-alkyl, X4 is a group â€”C(O)â€”Oâ€”, â€”Oâ€”C(O)â€”NHâ€”C(O)â€”Oâ€”, (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 (alkâ€²) is linear or branched C2-C12-alkylene, alkâ€³ 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.