Solutions of polymeric guanidine salts with increased biocidic activity, process for their preparation and use

摘要

The invention relates to solutions of polymeric guanidine salts with increased biocidal activity, in particular against staphylococci, to a process for their preparation, and to their use for the preparation of biocidal agents. The solutions according to the invention are prepared by reacting a diamine or polyamine of the general formula IMAGE in which R and R' preferably denote hydrogen and X preferably denotes an unbranched alkylene group having 4 to 10 C atoms, with cyanogen chloride in an organic solvent, followed by polymerisation, the process being characterised in that the polymerisation is carried out in a polyhydric alcohol with a boiling point of above 195 DEG C and which is liquid at 20 DEG C, at 130 to 160 DEG C in the course of 15 to 60 minutes. The reaction is preferably carried out with ClCN, and the polymerisation is preferably carried out in glycerol. IMAGE