Patent ID: 7276545
Filing Date: 2007-10-02
Classification: C08G

Abstract:
1. A mixture of chain-extended N-alkylaziridino prepolymers of the following general formula in which n is an integer from 1 to 50; R1 is H or C X is a divalent, saturated or unsaturated, linear, branched, cyclic or polycyclic hydrocarbon radical which may contain from 0 to 5 hetero atoms from the group consisting of O, NR1 and S and comprises altogether from 1 to 50, C atoms, and this hydrocarbon radical contains a group selected from a group consisting of —NR1-(C═O)—O—, —NR1-(C═O)—NR1-, —(C═O)—O— and —(C═O)—S—, which represents the covalent link to the polymer radical Z; Z is a divalent prepolymer radical having number average molar masses in the range from 1 500 to 45 000 g/mol, from the group consisting of polyesters, polycarbonates, polyolefins, polysiloxanes and polyethers; E is —X′-A-X′— A is a divalent saturated or unsaturated linear, branched, cyclic or polycyclic hydrocarbon radical which optionally also contains aromatics and may contain from 0 to 15 hetero atoms from the group consisting of O, NR1 and S and comprises altogether from 0 to 50 C atoms; X′ is a divalent saturated or unsaturated, linear, branched, cyclic or polycyclic radical which optionally also contains aromatics and may contain from 0 to 15 hetero atoms from the group consisting of O, NR1 and S, and this radical contains a group selected from the group consisting of —NR1-(C═O)—O—, —NR1-(C═O)—NR1-, —(C═O)—O— and —(C═O)—S—, which represents the covalent link to the polymer radical Z, with non-chain-extended N-alkylaziridino prepolymers of the general formula in which R1, X and Z have the above meaning.