Abstract
In order to protect polymer materials in particular polyurethanes and similar materials from biodeterioration by microscopic fungi, seven fungicidal compounds of the guanidine series were synthesized and their effectiveness was investigated in various concentrations. Among the tested compounds, the most effective is the first fraction of polyhexamethylene guanidine n-octylphosphonate (code B1), which completely suppresses the growth of all studied micromycetes at a minimum concentration of 0.01 % by weight. At a lower concentration of 0.001 % by weight, compound the first fraction of polyhexamethylene guanidine n-octylphosphonate inhibits the growth of most of the studied micromycetes, with the exception of the Aspergillus niger culture.
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