FI82589B - BIOCIDA AEMNESKOMBINATIONER. - Google Patents

Description

1 82589

Biocidal active substance mixtures

The invention relates to substances which, due to their bactericidal and fungicidal properties, can be used as disinfectants, wood preservatives, bactericides and fungicidal finishes for textiles, plastics and building materials, or as preservatives or biocidal preservatives for paint compositions.

The substances according to the invention contain as active ingredients a) tri-n-butyltin compounds, and b) N-propyl-N-2- (2,4,6-trichlorophenoxy) ethyl-1H-imidazole-1-carboxamide (prochloraz); in a weight ratio of 9: 1 to 1: 9, in particular 3: 1 to 1: 3.

The triorganotin compounds are known to be very effective against microorganisms, e.g. harmful fungi and bacteria. This group of compounds reaches their power optimum when the total number of carbon atoms of the alkyl groups attached to the tin is 9 to 12. Thus, tri-n-butyltin compounds, e.g. tri-n-butyl-20 lithium oxide, are particularly useful.

The product N-propyl-N-2- (2,4,6-trichlorophenoxy) ethyl-1H-imidazole-1-carboxamide is known to be a very effective broad-spectrum fungicide. The effect is particularly pronounced in the genera Ascomycetes and Deuteromycetes 25 and significantly weaker in the genus Basidiomycetes.

It has now surprisingly been found that the combination of tri-n-butyltin compounds and N-propyl-N-2- (2,4,6-trichlorophenoxy) -ethyl-1H-imidazole-1-carboxamide has a synergistic effect on microorganisms. The substances according to the invention considerably expand the range of effects of the individual substances and enhance the inhibitory effect on microorganisms against which the individual substances are also effective (see Tables 1 and 2).

Suitable triorganotin compounds are, in particular, tributyltin compounds, preferably tri-n-butyltin oxide, tri-n-butyltin chloride and esters formed with inorganic and organic acids, such as tri-n-butyltin naphthenate, tri-n-butyltinoleate, -butyltin acetate, tri-n-butyltin phosphate, tri-n-butyltin abiethate, tri-n-butyltin aversatate and tri-n-butyltin aboate 5.

The substances according to the invention can be used in particular in wood protection, since in this way not only the action of wood-decomposing fungi is prevented, but also protection against wood-staining fungi and the action of bacteria is achieved. Bacteria do not break down wood, but they can contribute to the destruction caused by fungi.

The substances are applied to the wood in the form of their solutions, optionally with colorants and auxiliaries, by brushing, spraying, spraying or dipping.

In addition, the substances according to the invention can be used as biocidal finishes for textiles, plastics and building materials, suitably in the form of various preparations, such as solutions, emulsions and dispersions with or without binders, or solid carriers or diluents and optionally containing additives, such as wetting, tackifying, emulsifying and dispersing agents.

The active ingredient concentrations are generally in the range from 0.05 to 50% by weight and are determined by the requirements of use and the absorbency of the substrate.

In wood preservatives, the substances according to the invention are applied by brushing, spraying, etc., preferably as solutions in petrol fractions, optionally adding penetration enhancers, binders or other solvents in a concentration of 0.05 to 5% by weight and 50 to 400 g of active ingredient solution per square meter of wood surface.

The wood can be protected very effectively by forcing the substances according to the invention dissolved in suitable substances to penetrate the wood by special technical methods, e.g. the double vacuum method, the vacuum method or the vacuum-pressure method, causing the wood to penetrate tunnel 3 82589 0.1 to 3.0, preferably 0 , 1 - 1.0 kg active ingredient / m3 wood.

The substances according to the invention can also be prepared into water-dilutable combinations which can also be used in wood protection, in which case emulsions containing 0.5 to 3% by weight of active ingredient are applied by brushing, dipping, etc.

To protect wood materials, the substances according to the invention can be added in the form of highly concentrated solutions or combinations of emulsifiers to the binder or adhesive in an amount of 0.1 to 2% by weight, based on the active ingredient.

To protect textiles, e.g. cotton fabrics, from microorganisms, the substances can be applied by spraying or dipping as solutions, e.g. ethanol, xylene and ketone solutions containing 0.05 to 3% by weight of active ingredient, optionally with the addition of hydrophobicizing agents.

In order to broaden the spectrum of action, to target the action to specific microorganisms or to provide an insecticidal action, other active ingredients can be combined with the substances according to the invention, e.g. 3-iodo-2-propynylbutylcarbamate, copper naphthenate, copper-8-oxyquinoline, cyclohexyl-N-methoxy-2,5-dimethylfuran-3-carboxylic acid amide, N, N-dimethyl-N'-phenyl-N'-fluorodichloromethylthiosulfonyldiamide, N-trichloromethylthiophthalimide, N-hexachlorocyclohexane and permethrin .

Example 1 Colorless binder-containing combination of 1 part by weight of tri-n-butyltin oxide, 1 part by weight of N-propyl-N2- (2,4,6-trichlorophenoxy) ethyl-1H- imid t soi i carbarbamide, 0.1 part by weight of permethrin, 5 parts by weight of diethylene glycol monobutyl ether, 10 parts by weight of long-35 oily alkyd resin (50%), 82.5 parts by weight of high boiling white spirit 60), had a good penetration ability and was very well suited as a wood preservative for wood structures.

Example 2 Colored wood preservative lacquer with 2.2 parts by weight of 5-parts of tri-n-butyltin naphthenate, 1.0 part by weight of N-propyl-N-2- (2,4,6-trichlorophenoxy) ethyl-1H-imidazole carboxamide, 40 parts by weight of a long-oil alkyd resin (50% by weight), 0.5 part by weight of litter, 0.5 part by weight of anti-settling agent, 9.2 parts by weight of iron oxide-pu-10 paste, 0.8 parts by weight of iron oxide black paste, 6 parts by weight of diethylene glycol monobutyl ether and 39.8 parts by weight of high-boiling white spirit (Kristallöl 60), suitable for painting dimensionally permanent wooden structures such as window frames, doors, etc.

15 Example 3

Water-based active compound combination containing 20 parts by weight of tri-n-butyltinal linoleate, 20 parts by weight of N-propyl-N-2- (2,4,6-trichlorophenoxy) ethyl-1H-imidazole carboxamide (in 70% xylene) ) and 60 parts by weight of 20 nonionic emulsifiers, could be diluted with water over a wide range of 1: 5 to 1:50 to give stable emulsions, e.g. for treating fresh wood by brushing, spraying or dipping.

The undiluted combination, in a concentration of 0.2 to 25% by weight, can be used as a biocidal preservative in aqueous paint compositions, e.g. acrylate-based dispersions.

The efficacy was compared by impregnating the round filter papers (5.5 cm in diameter) with the ethanol solutions specified in Tables 1 and 2 and drying them in air, then placing the papers in petri dishes on agar inoculated with a bacterial suspension or a sponge-spore suspension, +37 ° C (bacteria) or 3 weeks at +30 ° C (fungi).

35 The zones of inhibition formed around the samples (width of the growth zone in millimeters) were then determined.

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Claims (4)

7 82589 1. Bactericidal and fungicidal agents, characterized in that they contain as active substances a) tri-n-butyltin compounds, and b) N-propyl-N-2- (2,4,6,6). trichlorophenoxy) ethyl-1H-imidazole-1-carboxamide. 1. Bactericidisia ja fungisidisia aineita, tunnetut siitä, etä ne tehoaineina sisältävät 5) a) tri-n-butyylitinylidisteitä, yes b) N-propylyl-N-2- (2,4,6-trichlorophenoxy) ethylyl-1H-imidatsoli-1 -karboksiamidia. Active substance mixtures according to claim 1, characterized in that the weight ratio in these is 9: 1 ... 1: 9, especially 3: 1 ... 1: 3. 2. Patent Tivaatimuksen 1 mukaisia tehoaineseoksia, tunnetut siitä, etä painosuhde niissä on 9: 1 ... 10 1: 9, erityisesti 3: 1 ... 1: 3. Use of the active substance mixtures according to claim 1 for the manufacture of wood preservatives. 3. Patent Tivaatimuksen 1 mukaisten tehoaineseosten käyttö puunsuoja-aineiden valmistamiseksi. 4. Patent tivaatimuksen 1 mukaisten tehoaineseosten käyttö materialen ja maalauskoostumusten biosidisinä suoja-aineina. 5 Use of the active substance mixtures according to claim 1 as biocidal protection agents for materials and coating combinations.