Cu complex of polymer from 2,6-bis-aminomethylpyridine and 4,4'-bis-aminomethyldiphenylmethane; water in dimethyl sulfoxide T=25°C; var.reag.: Cu(2+) complex of 2,6-bis-benzylaminomethylpyridine; oligomers of 2,6-bis-aminomethylpyridine and 4,4'-bis-aminomethyldiphenylmethane; Rate constant;