NO167013B - PROCEDURE FOR FIGHTING SUSPENS WHICH DAMAGE TO WOODS - Google Patents

Abstract

1. A method of controlling fungi which damage wood, wherein the fungi, or the wood threatened by fungal infestation, excluding wood from rubber trees, is treated with N-tridecyl-2,6-dimethylmorpholine, except in the form of an aqueous solution which contains a 1,3-butadiene polymer as a solubilizer.

Description

The present invention relates to a method for combating fungi that damage wood.

It is recognized from German official publication 1,164,152 to use substituted morpholine derivatives in agriculture to combat phytopathogenic fungi. A center of gravity in the use of these active substances, especially of N-tridecyl-2,6-dimethylmorpholine (tridemorph) lies underneath in grain in combating true powdery mildew fungi belonging to the fungal class Ascomycetes. Grain rust fungi such as rye dwarf rust and wheat brown rust which belong to the Basidiomycetes class of fungi are not controlled with tridemorph.

It is also known to use N-tridecyl-2,6-trans-dimethyl-morpholine for combating wood-destroying fungi such as Coniophora and Polystictus (EP 129,211).

It has now surprisingly been found that N-tridecyl-2,6-dimethyl-morpholine in comparison with N-tridecyl-2,6-trans-dimethyl-morpholine shows a significantly better activity against such fungi, which attack and destroy wood, especially no longer living wood.

The present invention therefore consists in treating the fungi or wood that is threatened by fungal attack, except for wood from rubber trees, with N-tridecyl-2,6-dimethylmorpholine.

According to the invention, the following wood-destroying fungi (Basidiomycetes) can be used, e.g. fight with the wood preservative: Merulius lacrimans, Coniophora puteana, Lentinus lepideus, Lenzites trabea, Polystictus versicolor, Poria vaporaria.

No longer living (dead) wood is e.g. cut wood, construction wood, wood materials, e.g. chipboard, wood shavings. By N-tridecyl-2,6-dimethylmorpholine is meant both the active substance itself and its salts with inorganic or organic acids, e.g. salts with hydrogen fluoride, hydrochloric acid, hydrogen bromide, sulfuric acid, acetic acid and propionic acid.

The active substance can be used in preparations such as solutions, emulsions, pastes, ironing agents (eg paint, stain) and oil dispersions. The preparations generally contain between 0.1

and 90% by weight active substance, preferably 0.25 to 50%. The amount used depends on the effect you want to achieve, 0.5 to 8 g

active ingredient per m<2> wooden surface to be protected respectively 50 to 4000 g of active substance per m<3> wood. Ironing agents contain e.g. 0.5 to 4% by weight of active ingredient. To protect wood substances, the active substances can be added to the binder in the form of an emulsion, e.g. in amounts of 2 to 6% by weight.

Application of the active substance takes place in the usual way, e.g. by ironing, spraying, spraying, dipping or pressure impregnation or diffusion methods.

The following examples shall illustrate the invention (percentages by weight%).

Example 1

Wood protection primer colorless

2.00% tridemorph

0.10% permetri.n

0.50% diclofluanid

6.00% linseed oil

91.40% test gasoline (bp. 180-220°C)

Example 2

Trevi frost protection glaze, colored

1.00% tridemorph

0.10% permetri.n

0.50% diclofluanid

15.00% alkyd resin

3.00% butyl glycol

3.00% iron oxide pigment

0.20% desiccant

77.20% test gasoline (bp. 180-220°C)

Example 3

Vacuum impregnation oil

2.00% tridemorph

0.50% diclofluanid

3.00% dibutyl phthalate

94.50% test petrol (bp. 180-220°C)

Example 4

Trevi rain protection primer, water-dilutable 2.00% tridemorph

3.00% dimethylalkylberizylammonium umchlori d

1.00% addition product of ethylene oxide (EO) to

nonylphenol (approx. 10 mol EO per mol phenol)

3.00% acetic acid

5.00% propylene glycol

86.00% water

To extend the spectrum of action or to achieve special effects, the active substances can be combined with other active substances. Mixtures with the following compounds are considered particularly fortunate: Organotin compounds such as tributyl tin oxide and tributyl tin benzoate

methylene bi sti ocyanate

dimethylalkylamine salts

dimethyldialkylammonium chloride there

dimethylalkylbenzylammonium chlorides

trimethylalkylammonium chlorides

dimethyl bi pyridi ni um-chlori d

cetylpyri di ni um-chlori d

chlorinated phenols, such as tetra- and pentachlorophenol tetrachlorosofthalic acid dinitri 1

2-Halobenzoic acid anilide

N-cyclohexyl-N-methoxy-2,5-dimethyl-furan-3-carboxylic acid amide N,N-dimethyl-N'-phenyl-(N-fluoromethylthio)-sulfamid N,N-dimethyl-N1-tolyl-( N-fluoromethylthio)-sulfami d benzimidazole-2-carbamic acid methyl ester

2-thi ocyanomethy1-thi obenzothi azole

copper naphthenate

copper-8-oxyki noli n

alkali and metal salts of N'-hydroxy-N-cyclohexyl-diazenium oxides ^

1-(1',2',4'-triazolyl-1')-[1-(4'-chlorophenoxy)]-3,3-dimethyl-butan-2-one

1-(1<1>,2'-4'-triazolyl-1')-[1-(4'-chlorophenoxy)]-3,3-dimethyl-butan-2-ol

N-[3,(p-tert-butylphenyl)-2-methyl-propyl]-cis-2,6-dimethylmorpholine hexachlorocyclohexane

0,0-diethyl-o-(a-cyanobenzylidene-amino-thiophosphate).

0,0-di.ethyl-o-3. 5.6. - trichloro-2-pyridi 1-thiono-phos ph at 0,0-diethy1-dithio-phosphoryl-methyl-6-chlorobenzoxazolone 2-i-propoxyphenyl-N-methyl-carbamate

N-methyl-1-naphthyl-carbamate

norbornene-di.methanolhexa-chlorocyclosulf in tt

1-(4-Chlorophenyl)-3-(2,6-difluorobenzoyl)-urea

1-[2-(2,4-dichlorophenyl)-1,3-dioxolan-2-yl-ethyl]-1H-1,2,4-triazole

1-[2-(2,4-Dichlorophenyl)-4-ethyl-1,3-dioxolan-2-yl-ethyl]-1H-1,2,4-triazole

1-[2-(2,4-dichlorophenyl)-4-n-propyl-1,3-dioxolan-2-yl-ethyl]-1H-1,2,4-triazole

Synthetic pyrethroids such as

(±)-3-(2.2-dichlorovinyl-2.2-dimethyl)-cyclopropane-1-carboxylic acid 3-phenoxy-benzyl ester

3-(2.2-dichloroviny1-2.2-dimethyl)-cyclopropane-1-carboxylic acid ct-cyano-3-phenoxybenzyl ester

3-(2.2-dibromovinyl-2.2-dimethyl)-α-cyano-m-phenoxybenzyl (IR, 3R)-cyclopropane carboxylate

α-cyano-3-phenoxybenzyl-isopropyl-2. 4-Chlorophenyl acetate Example 5

To prepare an oily wood preservative with 1% active ingredient, first dissolve 1 part (part by weight) of the active ingredient under gentle heating in 55 parts of an aromatic gasoline fraction. Then 10 parts of an alkyd resin are added and supplemented with test gasoline at room temperature to 100 parts.

To produce water-repellent impregnating agents can

so-called "water repellents" are added to the oily wood preservatives. Suitable substances are e.g. zinc stearate, aluminum stearate and waxes.

Furthermore, in order to achieve a color effect*, fine-particle inorganic or organic pigments or oil-soluble dyes can be incorporated into the formulations.

To protect wood against fungal attack is normally applied

50 to 200 ml of those in ex. 5 listed oily wood preservatives per m 2 wooden surface by ironing, spraying or dipping.

Application example 1

Tridemorph is dissolved in acetone in quantities from 100, step by step to 3 ppm and a 5% malt extract agar is added. The agar is poured into 1 petri dish and, after solidification, the fungicide-containing nutrient agar plates are inoculated separately with the mycelium of the wood-attacking fungi Merculius lacrimans (true house fungus), Coniophora puteana (cellar fungus), Lenzites trabea, Polystictus versicolor and Poria vaporaria. After 5 days of development of the dishes at 25°C, the development of fungal colonies on the nutrient medium is assessed compared to N-tridecyl-2,6-trans-dimethylmorpholine (A)

and the control (without fungicide addition).

0 = no fungal growth (fungal mycelium killed)

1 = some fungal growth (up to 1/3 of the agar surface covered)

2 = medium fungal growth (up to 2/3 of the agar surface covered)

5 = unrestrained fungal growth (entire agar surface overgrown)

Application example 2

The following limit values, i.e. the required amount of the active substance tridemorph for the protection of 1 m 3 of wood was

measured after previous washing out with water.

4 years

Claims (1)

Method for combating fungi that damage wood, characterized by treating the fungi or the wood that is threatened by fungal attack, except wood from rubber trees, with N-tridecyl-2,6-dimethylmorpholine.