DK166249B - BACTERICIDE AND FUNGICIDE AGENTS AND USE THEREOF - Google Patents

Description

DK 166249B

The invention relates to agents which, because of their bactericidal and fungicidal properties, are useful as disinfectants, wood preservatives and to impart bactericidal and fungicidal properties or as preservatives and to make ironing agents biocidal, textiles, plastics and building materials.

The agents of the invention contain as active ingredients a mixture of a) tri-n-butyltin compounds and b) N-propyl-N-2- (2,4,6-trichlorophenoxy) ethyl-1H-imidazole-1-carboxamide (Prochloraz) .

The mixture of the active substances a and b is suitably in the weight ratio of 9: 1 to 1: 9, especially 3: 1 to 1: 3.

The powerful action of triorganotin compounds against microorganisms, e.g. harmful fungi and bacteria are known. The efficacy optimization for this class of compounds is present when the total C number in the tin-linked alkyl groups is 9-12. Therefore, especially useful are tri-n-butyltin compounds, e.g. tri-n-butyltin oxide.

The product N-propyl-N-2- (2,4,6-trichloro-phenoxy) ethyl-1H-imidazole-1-carboxamide is known as a well-acting fungicide with a broad spectrum of action. Particularly pronounced, the effect against ascomycetes (sac-spore fungus) and deuteromycetes is significantly weaker against 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 exhibits a synergistic effect against microorganisms. . The agents of the invention significantly extend the spectrum of efficacy of the individual substances and enhance the inhibitory effect against microorganisms against which the individual substances already exhibit a good effect (see Tables 1 and 2).

DK 166249 B

2

Of tributyltin compounds, use is made of: tri-n-butyltin oxide, tri-n-butyltin chloride as well as esters of inorganic and organic acids such as tri-n-butyltin naphthenate, tri-n-butyltin linoleate, tri-n-butyltin tallate, tri-n-butyltin -5 phosphate, tri-n-butyltinabietate, tri-n-butyltinversate and tri-n-butyltinborate.

In particular, the agents of the invention can be used for tree protection since, in addition to preventing the degradation caused by wood-destroying fungi, protection against wood-bleaching fungi and bacterial attacks is also achieved. Bacteria cause no degradation of wood, but can favor an attack by fungi.

The agents are introduced into the wood in the form of solutions, optionally with color or auxiliaries, by ironing, injection, spraying, immersion or impregnation.

Further, the agents of the invention can be used to impart biocidal properties to materials and coating materials or coating systems where they are conveniently used in the form of compositions such as solutions, emulsions, dispersions with or without binders or with solid carriers or diluents and optionally by the addition of wetting agents. adhesives, emulsifiers and dispersants.

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

For wood protection, the agents of the invention are used, preferably in solution in gasoline fractions, optionally with the addition of penetration promoters, binders or other solvents in concentrations of 0.05 to 5% by weight and in amounts from 50 to 400 g of solution of active substances per m2 wood surface by ironing, spraying or similar

DK 166249B

3 nende.

A very effective wood protection is obtained when the agents according to the invention dissolved in suitable substances are introduced into the wood by special technical methods such as e.g. double vacuum method, vacuum method or vacuum pressure method so as to obtain a feed of from 0.1 to 3.0, preferably from 0.3 to 1.0 kg of active substance per m3 of wood.

The compositions of the invention can also produce water-dilutable formulations which can also be used for wood protection, e.g. by coating, impregnating etc. with emulsions containing 0.5 to 3% by weight of active substance.

For the protection of wood materials, binder or adhesive 15 may be added to the agents of the invention in the form of highly concentrated solutions or formulations with emulsifiers in amounts of 0.1 to 2% by weight relative to the active substance.

For the protection of textiles, e.g. cotton fabric, against microorganisms, the agents can be applied as solutions, e.g. in ethanol, xylene and / or ketones with concentrations of active substance from 0.05 to 3% by weight by spraying or impregnation, optionally adding a hydrophobic agent.

In order to broaden the spectrum of action to achieve a particular action against particular microorganisms or to provide insecticidal activity, the agents of the invention may be combined with other active substances. Suitable for example: 3-iodo-2-propynyl-butyl-carbamate, copper naphthenate, copper-8-oxyquinoline, N-cyclohexyl-N-methoxy-2,5-dimethyl-furan-3-carboxylic acid amide, N, N-dimethyl-N '-phenyl-Ν' -fluorodichloromethyl-thiosulfonyl di-

DK 166249 B

4 amide, N-trichloromethylthiophthalimide, γ-hexachlorocyclohexane, permethrin.

5 Examples

Example 1

A colorless low binder formulation consisting of 1 part by weight tri-n-butyltin oxide 1 part by weight N-propyl-N-2- (2,4,6-trichlorophenoxy) ethyl 1 H -imidazole carboxamide 0.1 part by weight permethrin 5 parts by weight diethylene glycol monobutyl ether 10 parts by weight of long-oil alkyd resin (50%) 15 82.9 parts by weight of high-boiling test gasoline (crystal oil 60), exhibits good penetration ability and is suitable for use as wood protection foundations for building wood.

Example 2

A stained wood protective glaze consisting of 2.2 parts by weight of tri-n-butyltin napthenate 1.0 parts by weight of N-propyl-N-2- (2,4,6-trichlorophenoxy) ethyl-1H-imidazole-carboxamide 40 parts by weight of long-oil alkyd resin (50% 0.5 parts by weight of sicative 25 0.5 parts by weight of anti-scavenger 9.2 parts by weight iron oxide red paste 0.8 parts by weight iron oxide black paste 6 parts by weight diethylene glycol monobutyl ether 39.8 parts by weight high boiling test gasoline (crystal oil 60),

DK 166249B

5 is suitable for ironing on wooden building parts which must hold the dimensions, such as window frames, doors, etc.

Example 3

An active substance water-diluent consisting of 5 parts by weight of 20-tri-n-butyltin linoleate 20 parts by weight of N-propyl-N-2- (2,4,6-trichlorophenoxy) ethyl-1H-imidazole-carboxamide (70% Si xylene) 60 parts by weight of non-ionic emulsifier can be diluted with water in the wide range of 1: 5-1: 50 to provide 10 stable emulsions for coating, spraying or dipping e.g. freshly felled wood.

The undiluted formulation is used at concentrations of 0.2 to 3% by weight to give biocidal action to aqueous irrigants, e.g. dispersions on acrylate basis.

To compare effects, round paper filters (5.5 cm diameter) were soaked with the ethanol solutions specified in Tables 1 and 2, air dried, and then placed in agri petri dishes inoculated with bacterial suspensions or fungal spore suspensions and allowed to stand for 2 days. 20 + 37 ° C (bacteria) or 3 weeks at + 30 ° C (fungi).

Then the inhibition zones around the specimens (width of the free zone in mm) are determined.

DK 166249 B

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Claims (4)

Bactericidal and fungicidal agents, characterized in that they contain, as active substances, a mixture of 5 a) tri-n-butyltin compounds and b) N-propyl-N-2- (2,4,6-trichlorophenoxy) ethyl-1H -imidazole-1-carboxamide. A composition according to claim 1, characterized in that they contain the mixture of the active substances a and b in the weight ratio of 9: 1 to 1: 9, especially 3: 1 to 1: 3. Use of mixtures of the active substances according to claim 1 for the manufacture of wood preservatives. Use of mixtures of the active substances according to claim 1 to impart biocidal properties to materials and coating materials 15 or coating systems.