Aqueous biocidal cationic dispersions of polymers and their use

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

1989-12-29

1991-09-17

Page, Thurman K.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Biocides; animal or insect repellents or attractants

424 78, 424 81, 427393, 514642, 514643, 514937, A01N 2504, A01N 3312, A01N 2502, B05D 302

Patent

active

050493833

ABSTRACT:
Use of fine-particled biocidal aqueous cationic dispersions of polymers as biocidal treatment agents for substrates at risk from microbes, preferably for fungicidal, bactericidal and/or algicidal treatments. The dispersions 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 compounds, 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 .mu.m at a cationic activity of 1.5 to 600 .mu.mol 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 preferably 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.

REFERENCES:
patent: 3988294 (1976-10-01), Hill
patent: 4256804 (1981-03-01), Jasperson
patent: 4304703 (1981-12-01), Das
patent: 4675374 (1987-06-01), Mochizuki et al.
patent: 4839373 (1989-06-01), Ito et al.

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