Reactive polymers

A compound of formula

• wherein R1 is an electron-withdrawing substituent and n is an integer from 0 to 2,
• Z is a group which functions as a precursor for carbene or nitrene formation,
• A is a radical of formula
• X and X1 are each independently of the other a group —O— or —NR2—, wherein R2 is hydrogen or C1-C4-alkyl;
• A1 is C2-C30-alkyl which may be Interrupted by —O—;
• R 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-cycloakylene-C1-C6-alkylene, C3-C8-cycloalkylene-C1-C2-alkylene-C3-C8-cycloalkylene or C1-C6-alkylene-C3-C8-cycloakylene-C1-C8-alkylene;
• and
• (oligomer) is
• (i) the radical of a telomer of formula
• wherein (alk) is C2-C12-alkylene,
• Q is a monovalent group that is suitable to act as a polymerization chain-reaction terminator,
• p and q are each independently of another an integer from 0 to 750, wherein the total of (p+q) is an integer from 2 to 750,
• and B and B′ are each independently of the other a 1,2-ethylene radical derivable from a copolymerizable vinyl monomer by replacing the vinylic double bond by a single bond, at least one of the radicals B and B′ being substituted by a hydrophilic substituent;
• or (i-i) the radical of a telomer of formula
• wherein (alk*) Q*, p1 and q1 each independently have the meaning of (alk), Q, p and q,
• B1 is a 1,2-ethylene radical derivable from a copolymerizable vinyl monomer by replacing the vinylic double bond by a single bond, which is substituted by a radical —T-(oligomer1), wherein (oligomer1) independently is a radical of formula (3a) above and T is is a direct bond or a radical of formula
• —C(O)—(T1)x—X3— (2a*) or
• —(T2)m—NH—C(O)—X4— (2b*);
• or
• —(T2)m—X3—C(O)— (2c*);
• or
• —C(O)—NH—(alk**)—C(O)—X3— (2d*);
• or
• —C(O)—X4—(alk***)—X3—C(O)— (2e*);
• T1 is —O—C2-C12-alkylene which is unsubstituted or substituted by hydroxy, or is
• —O—C2-C12-alkylene-NH—C(O)— or —O—C2-C12-alkylene-O—C(O)—NH—R13—NH—C(O)—, wherein
• R13 independently has the meaning of R above;
• T2 is C1-C8-alkylene;
• phenylene or benzylene;
• X3 and X4 are each independently of the other a bivalent group —O— or —NR2′, wherein R2′ is hydrogen or C1-C6-alkyl;
• (alk**) is C1-C6-alkylene and (alk***) is C2-C12-alkylene, and
• m and x are each independently of the other the number 0 or 1;
• and
• B1′ independently has the meaning of B1 or B;
• or
• (ii) the radical of an oligomer of the formula
• wherein R3 is hydrogen or unsubstituted or hydroxy-substituted C1-C12-alkyl, u is an integer from 2 to 750 and 0′ is a radical of a polymerization initiator, or
• (iii) the radical of formula
• wherein X2 independently has the meaning of X above, and R3 and u are as defined above, or
• (iv) the radical of an oligomer of formula
• wherein R4 and R4′ are each independently C1-C4-alkyl, An31 is an anion, v is an integer from 2 to 750, and Q″ is a monovalent group that is suitable to act as a polymerization chain-reaction terminator;
• subject to the proviso that A is not a radical of formula (2b) if (oligomer) is a radical of formula (3b) or (3c).