| abstract |
The invention relates to a process for the preparation of polycondensation products of guanidine, aminoguanidine or diaminoguanidine G with one or more benzylic dihalides BDH according to the following reaction scheme: wherein each X is a halogen, preferably chlorine or bromine; R 1 represents an aromatic ring system having at least one aromatic ring optionally containing one or more heteroatoms selected from O, N and S; Gua is a guanidinediyl, aminoguanidinediyl or diaminoguanidinediyl radical; Y stands for H-Gua and Z stands for H; or Y and Z together represent a chemical bond to give a cyclic structure; wherein at least one benzylic dihalide BDH is subjected to a polycondensation reaction with an excess of guanidine, aminoguanidine or diamineguanidine G with elimination of HX. |