| 主权项 |
1. A polymerizable composition, comprising
i) at least one benzoxazine compound and ii) at least one polyether compound, consisting of one or more structural elements of the general formula (I) having terminal groups independently selected from hydroxyl, carboxyl, amino, thiol, oxirane, aziridine or thiirane groups, in which n is a number from 5 to 10,000, each residue Ra in each repeating unit independently denotes a divalent group of compounds comprising 1 to 100 C atoms, each residue X′ in each repeating unit is independently selected from —O—, —S—, —NH— or a carboxyl group of the general form —(C═O)O—, in which the C atom of the carboxyl group is always connected to the residue A, each residue Y in each repeating unit is independently selected from —OH, —SH and —NH2 and each residue A in each repeating unit is independently selected from K or L, K denoting a divalent residue of aromatic dihydroxyl compounds following removal of both hydroxyl groups and L denoting a divalent residue of polyethers following removal of two terminal hydroxyl groups, with the proviso that, relative to the total number of all residues A in the polyether compound, 20 to 80% of all residues A denote K and 20 to 80% of all residues A denote L, wherein the polyether compound is free of oligomeric or polymeric urethane groups. |
