Use of mixtures of polymers and aminonisothiazols as biocides

A - Human Necessities – 01 – N

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A01N 43/80 (2006.01)

Patent

CA 2303189

The invention relates to the use of mixtures of (A) polymers and aminoisothiazols (B) in addition to the metal complexes and acid additive salts thereof as biocides. Said polymers (A) contain the following constituents integrated by means of polymerisation: (a) 0.1 - 100 mol % vinyl amine units or ethylene imine units, (b) 0-99.9 mol % units of at least one monomer from the group consisting of N vinyl carboxylic acid amides of formula (I), wherein R1, R2=H or C1-C6 alkyl, vinyl formiate, vinyl acetate, vinyl propionate, vinyl alcohol, C1-C6 alkyl vinyl ether, monoethylenically unsaturated C3-C8 carboxylic acids, their esters, nitriles, amides and anhydrides, N vinylurea, N vinylimidazoles and N vinylimidazolines and (c) 0-5 mol % units of monomers with at least two ethylenically unsaturated double- bonds, wherein the sum of (a) and (b) and (c) amounts to 100 mol %, and (B) aminoisothiazols of formula (V) wherein R represents hydrogen or C1-C4 alkyl and X stands for halogen, NO2, CN and SCN.

L'invention concerne l'utilisation, comme biocides, de mélanges constitués de polymérisats (A) et d'aminoisothiazoles (B), ainsi que de leurs complexes métalliques et de leurs sels d'addition d'acide. Lesdits polymérisats (A) contiennent les composants suivants, intégrés par polymérisation: (a) 0,1 à 100 % en mol d'unités vinylamine ou d'unités éthylènimine, (b) 0 à 99,9 % en mol d'unités d'au moins un monomère du groupe constitué des amides d'acide N-vinylcarboxylique correspondant à la formule (I), dans laquelle R?1¿, R?2¿ représentent H ou alkyle C¿1?-C¿6?, du formiate de vinyle, de l'acétate de vinyle, du proprionate de vinyle, de l'alcool de vinyle, de l'éther d'alkyle C¿1?-C¿6?-vinyle, des acides carboxylique C¿3?-C¿8? monoéthyléniquement insaturés, leurs esters, nitriles, amides et anydrides, de la N-vinylurée, des N-vinylimidazoles et des N-vinylimidazolines, et (c) 0 à 5 % en mol d'unités de monomères présentant au moins deux doubles liaisons éthyléniquement insaturées, la somme de (a), (b) et (c) atteignant toujours 100 % en mol. Les amino-isothiazoles (B) correspondent à la formule (V), dans laquelle R représente hydrogène ou alkyle C¿1?-C¿4? et X représente halogène, NO¿2?, CN et SCN.

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