Aqueous biocidal cationic dispersions of polymers and their...

Details Aqueous biocidal cationic dispersions of polymers and their... Aqueous biocidal cationic dispersions of polymers and their...

B - Operations, Transporting

27

K

117/201, 167/8

B27K 3/34 (2006.01) B27K 3/15 (2006.01) B27K 3/50 (2006.01)

Patent

CA 1331725

ABSTRACT OF THE DISCLOSURE: Use of fine-particled biocidal aqueous cationic disper- sions of polymers as biocidal treatment agents for sub- strates at risk from microbes, preferably for fungicidal, bactericidal and/or algicidal treatments. The disper- sions of polymers used are biocidal cationic dispersions of polymers which can be obtained from suitable monomers by emulsion polymerization and which contain biocidal cationically surfactant quaternary organic ammonium com- pounds, preferably tetra-substituted ammonium compounds of the formula (I) and/or alkyl- or alkenylpyridinium compounds of the formula (II), in particular in an amount of 0.1 to 20% by weight, based on the disperse polymer. The average particle diameter of the polymer particles in the biocidal cationic dispersions of polymers is preferably 0.02 to 0.5 µm at a cationic activity of 1.5 to 600 µmol per g of solid, measured at pH 7, and the solids content of the dispersions is preferably 3 to 40% by weight. The biocidal cationic dispersions are prefer- ably used as treatment agents for the preservation of wood, for emulsion paint films and for polymer plasters or synthetic resin plasters, it being possible for the biocidal treatments which can be achieved to display surprising long-term biological actions.

563337

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