LT5125B - Vehicle used to apply chemical compounds to wood - Google Patents

Abstract

The invention relates to a vehicle comprising toluene (40-70 %), xylene (6-40 %), benzophenone (3-180 %), butylglycol (2-9 %), cetyl acetate (1-7 %), and methanol (0.3-4 %). The inventive vehicle has a high wood penetration index and can be used toprepare wood treatment compositions which contain one or more chemical compounds, e. g insecticides and/or fungicides, and which are used to treat or prevent damage caused by attacks by biological agents that are harmful to wood.

Description

FIELD OF INVENTION

The present invention is essentially directed to the treatment of trees by chemical treatment. The present invention specifically relates to a binder useful for treating trees with chemical compounds.

ORIGIN OF THE INVENTION

Various harmful biological agents are known that can attack a tree and cause severe damage. Among the biological agents mentioned above, insects, such as beetles (a term that includes various species of wood rodents whose larvae prune and prune the tree), termites, woodpeckers, etc. are harmful to the tree. and a fungus such as Poria vaillantii Fr., Coniophora cerebella Duey, Merulius lacrymans Wulf, Lentinus lepideus Fr., Lenzites sepiaria Wulf, Chaetomium globosum Kunz, et al.

The products most commonly used for treating and preserving wood usually contain one or more active substances which effectively eliminate harmful biological agents, such as one or more insecticides and / or fungicides, and a carrier for introducing said active substances into the tunnels and cavities formed by the said wood. exposure to harmful biological agents. One such composition is described in WO00 / 53017.

The amount of effective carriers of the active substance in the interior of the tree is currently very limited. Among these carriers commonly used in products for the treatment and preservation of wood are water, inorganic arsenic derivatives, pentachlorophenol, and creosote.

Water is the most commonly used carrier. However, it does not penetrate the wood sufficiently, so that the active ingredients introduced into the wood by the said carrier, however, do not penetrate sufficiently into the surface, thereby significantly reducing the effectiveness of said active substances.

Other carriers have a very slight wood penetration index, typically between 2 and 6 mm after 24 hours. In soft and porous trees, carrier penetration indices are obtained up to 6 mm, whereas in hard and non-porous trees, carrier penetration indices are between 2 and 3 mm over a 24 hour period.

Thus, there is a need to find new carriers that are suitable for treating trees with chemical compounds and which have a favorable high wood penetration index.

The present invention provides for a solution comprising the development of a new carrier for treating trees with chemical compounds comprising a mixture of several components. Said carrier has a high wood permeability index based on a test comprising treating the wood with a carrier at a particular point, allowing the carrier to act for a period of time and determining the carrier's advantage over the tree and assessing the carrier's advantage.

The carrier described in the present invention is useful for treating trees, in particular for treating and preventing injury due to the effects of biological agents on the tree.

It is an object of the present invention to provide said carrier for treating trees with chemical compounds.

Another object of the present invention is a composition comprising said carrier together with at least one chemical compound.

Yet another object of the present invention is a method of treating trees comprising administering to said tree an amount of said composition sufficient to heal.

DETAILED DESCRIPTION OF THE INVENTION

The present invention provides a carrier useful for treating trees with chemical compounds which previously comprises a carrier of the invention:

Components Percentage of total weight (%)

Toluene

-70

Xylene Benzophenone Butyl glycol Cetyl acetate Methanol

6-40

3-18

2-9 1-7

0.3-4

All components forming the carrier of the invention are commercial products. As used herein, the term "benzophenone" includes both benzophenone (diphenylmethanone) and its hydroxylated or methoxylated derivatives (see, e.g., The Merck Index, 11th Edition, 1989). Similarly, the term "butyl" includes any of the following: of butyl isomers.

In more detail, the carrier of the invention has the following composition:

Components Percentage of total weight (%)

Toluene 64

Xylene 16

Benzophenone 10

Butyl glycol 5

Cetyl acetate 4

Methanol 1

The carrier of the invention can be readily prepared using a method which comprises mixing the components in the parts required.

Several tests clearly show the high penetration index of the inventive carrier into various trees. 1) and can also be used to treat trees with chemical compounds, such as chemical compounds useful for treating trees, specifically treating and preventing injuries caused by biological agents that are detrimental to the tree. Example 2].

The invention also provides a composition, previously a composition of the invention, containing at least one chemical compound and a carrier of the invention. The amount of the carrier of the invention in the composition of the invention can vary widely; for example, the composition of the invention may contain between 0.1 and 99.9% by weight of the carrier of the invention, the remainder consisting of said compound or chemical compounds, in which case said chemical compounds may be present in any weight ratio possible between them. The composition of the invention may be readily obtained by mixing the carrier of the invention with said compound or chemical compound in a suitable weight ratio. The composition of the invention is in liquid form, for example as a solution or dispersion.

More particularly, in the formulation of the invention, the composition of the invention is a composition which is suitable for wood treatment comprising one or more chemical compounds suitable for wood treatment, and also a carrier of the invention. In another, more specific aspect of the invention, the composition of the invention is an insecticide and / or fungicide composition suitable for the treatment and / or prevention of injury to insects and / or fungi on a tree comprising one or more insecticides and / or one or more fungicides. and a carrier of the invention. The following insecticides and / or fungicides which may be present in the composition of the invention include chlorpyrifos, fipronil, silafluofen, acetamiprid, etofenprox, tripropyl isocyanurate, phenobucarb, hexaflumuron, fenitrothion, esfenvalurate, lidaclobal, mixtures thereof. In this case, the composition of the invention is suitable for wood-damaging biological agents such as insects, such as beetles, termites, woodpeckers, etc. and a developmental retardation of a fungus such as Pono vaillantii Fr., Coniophora cerebella Duey, Merulius lacrymans Wulf, Lentinus lepideus Fr., Lenzites separia Wulf, Chaetomium globosum Kunz, etc.

The wood penetration index obtained with the composition of the invention generally corresponds to the carrier used. Said penetration index may vary depending on the type of tree and also its degree of humidity.

The invention also provides a method for treating wood, which comprises treating the wood with a composition of the invention in an amount sufficient to produce the desired effect. As used herein, the expression "effect of wood on the treatment of the composition of the invention" includes treatment of the wood surface with the composition of the invention for chemical effect and introduction of the composition of the invention into tunnels and cavities formed by the wood .

The following examples serve to illustrate the invention and should not be construed as limiting.

EXAMPLE

Determination of the penetration index of a carrier tree

1.1 Materials and Method

The method used to determine the carrier wood permeation index consists of measuring a specified amount (between 3 and 10 ml) of the wood surface at a given point (origin) for a treatment test, allowing the carrier to act for a predetermined time (between 1 and 23 minutes) felling the tree and assessing the advantage of the carrier over the origin of the tree.

The trees used were a wide spectrum of trees, from very soft and porous to very hard and non-porous. The trees that were tested specifically were: poplar, scottish pine, walnut, cedar and beech. The trees were divided into 20 x 7 x 7 cm pieces.

The carriers tested were those whose compositions are described below. After testing and the results obtained, products were selected and those which could yield ineffective results were discarded for the sake of objectivity. The carrier composition of the invention was thus obtained.

I. Combinations of 2 different components:

1) Ethylene glycol / toluene

2) Benzophenone-2 / ethyl ether

3) Disodium phosphate / monoxinol-9

4) Butyl glycol / acetylene

5) Methanol / Benzene

6) Dodecyl diamine ethyl / xylene

7) Sodium sulfate / cetyl acetate

8) Sodium hydroxide / methylene chloride

Different concentrations (0.5 to 80% of the total weight) of each of the components present in each combination were tested for each combination. The residue was up to 100% composed of another component.

II. Combinations of 3 different components:

1) cetyl acetate / sodium hydroxide / monoxynol-9

2) butyl glycol / ethyl ether / disodium phosphate

3) acetylene / dodecyl diamine ethyl / toluene

4) benzene / methylene chloride / sodium sulfate

5) benzophenone-2 / acetylene / monoxynol-9

6) xylene / ethylene glycol / methanol

Different concentrations (0.5 to 80% of the total weight) of each of the components present in each combination were tested for each combination. The residue was up to 100% composed of another component.

III. Combinations of 4 different components:

1) ethyl ether / methanol / butyl glycol / sodium hydroxide

2) Sodium sulfate / xylene / methylene chloride / benzene

3) dodecyl diamine ethyl / cetyl acetate / disodium phosphate / acetylene

4) benzophenone-2 / ethylene glycol / monoxynol-9 / toluene

5) xylene / ethylene glycol / methanol /

Different concentrations (0.5 to 80% of the total weight) of each of the components present in each combination were tested for each combination. The residue was up to 100% composed of another component.

IV. Combinations of 5 different components:

1) methanol / acetylene / ethylene glycol / benzene / disodium phosphate

2) xylene / methylene chloride / dodecyl diamine ethyl / sodium sulfate / monoxynol-9

3) benzophenone-2 / sodium hydroxide / methanol / cetyl acetate / ethyl ether

4) acetylene / disodium sulfate / butyl glycol / methylene chloride / toluene

Different concentrations (0.5 to 80% of the total weight) of each of the components present in each combination were tested for each combination. The residue was up to 100% composed of another component.

IV. Combinations of 6 different components:

1) toluene / ethyl ether / ethylene glycol / methanol / monoxynol-9 / acetylene

2) Sodium hydroxide / cetyl acetate / sodium sulfate / xylene / dodecyl diamine ethyl / benzene

3) benzophenone-2 / methylene chloride / disodium phosphate / butyl glycol / acetylene / sodium hydroxide

4) toluene / xylene / benzophenone-2 / butyl glycol / cetyl acetate / methanol For each combination, different concentrations (0.5 to 80% by weight) of each of the components present in each combination were tested. The residue was up to 100% composed of another component.

1.2 RESULTS

In principle, the best results, expressed as a measure of the carrier penetration (mm), were obtained with a carrier having compositions of 6 different components, particularly with a V. type 4 composition consisting of toluene, xylene, benzophenone-2, butyl glycol, cetyl acetate and methanol. Specifically, the results obtained with the carrier containing Composition A: 64% toluene, 16% xylene, 10% benzophenone-2, 5% butyl glycol, 4% cetyl acetate and 1% methanol, all percentages being by weight, are shown in Table 1. in the table.

table

Composition A penetration index (PI) for different trees

The tree Amount (ml) Time (min) PI (mm) Poplar 3 1 10th Poplar 6th 2.5 15th Poplar 10th 6th 20th Scots pine 3 2 10th Scots pine 6th 5 15th Scots pine 10th 10th 20th

Walnut tree 3 6th 10th Walnut tree 6th 14th 15th Walnut tree 10th 20th 20th Cedar 3 8th 10th Cedar 6th 17th 15th Cedar 10th 23rd 20th Beechwood 3 8th 10th Beechwood 6th 17th 15th Beechwood 10th 23rd 20th

The following tests on compositions containing one or more insecticides and / or fungicides in combination with the carrier described in the present invention have clearly shown that the composition has a penetration index similar to that of the carrier [s] without active ingredient (s).

EXAMPLE

Insecticide composition and test effectiveness

Phenitrothion

Esfenvalerate

Carrier *

An insecticide composition was prepared, above Composition B., which corresponded to the following composition:

(total w / v) (w / v) residue above 100% * The composition of the vehicle was as follows: 64% toluene, 16% xylene, 10% benzophenone-2, 5% butyl glycol, 4% cetyl acetate and 1% methanol, wherein all percentages are by weight based on total weight [corresponds to Composition A mentioned in Example 1].

The density of the insecticide formulation was 0.9 g / ml.

The insecticide composition was obtained by adding the appropriate amounts of phenitrothione and esfenvalerate, obtained previously, by mixing its components in the appropriate amounts.

In order to evaluate the efficacy of said insecticide composition [Composition B], which contained the carrier of the present invention, the following tests were carried out:

2.1 Establishing preventive efficacy against termites; and

2.2 Limitation of the preventive efficacy against termites

2.1 Establishing preventive efficacy against termites

2.1.1. Spotting

2.1.1.1. Materials and Ways

The insecticide composition being tested is Composition B. No solvent was used to dilute the insecticide composition. Pure gelatin, as specified in the standard, was used to seal the ends of the test tubes.

Reticulitermes lucifugus Rossi was used as a biological agent.

The test standard was UNE standard 56411: 1992 (Una Norma Espafiola-A Spanish Standard) (EN 118: 1990) 'Wood preservatives. Determination of preventive efficacy against Feytaud's Reticulitermes santonensis. Laboratory method. "

The test was carried out on wooden test tubes obtained from Pinus sylvestris L., originating from Mount Valsain, according to the standard.

The minimum dose obtained by applying the lubrication treatment as specified in the standard was 43.05 ml / m ² .

2.1.1.2 Processing

2000 March 10 the minimum amount of insecticide composition possible (43.05 ml / m ² ), with a tolerance of ± 5%, was applied to one side of the test tubes, weighed to the desired volume to obtain absorbance and retention of the insecticide composition as indicated. In Table 2.

After treatment, the specimens were left to dry and stored in an air-conditioned chamber at 20 ± 2 ° C and 65 ± 5% relative humidity for 7 weeks before being exposed to insect colonies. 2000 May 3 The termite colonies were contacted with test tubes using polyurethane foam and the test facilities were placed in a chamber at 27 ± 2 ° C and 75 ± 5% relative humidity for 8 weeks.

The final study was conducted in 2000. June 26 Attacks on the test tubes were scored on the following scale:

0: No Attack Sign 1: Ready Attack 2: Easy Attack 3: Medium Attack 4: Strong Attack

The results obtained are shown in Table 2.

table

Preventive efficacy against termites (UNE 56411: 1992) Untreated test tubes. Spotting

Sample number Doses tested Inquiry results Attacks degree (0-4) Theoretical doses Doses applied Survival g / m ² ml / m ² g / m ² ml / m ² O (%) S and N (n) 1 38.75 43.05 0 0-0 0 3 38.75 43.05 0 0-0 0 4 12.0- 13.33- 38.75 43.05 3 0-0 0 5 15.0 16.66 38.75 43.05 1 0-0 0 7th 40.00 44.44 0 0-0 0 9th 40.00 44.44 2 0-0 0 T1 Do not treat - - 91 0-2 4 T2 examples - - 96 1-2 4 T3 - - 97 1-3 4

[O: laborers; S: Warriors; N: young insects; n: quantity]

The results obtained clearly show that the test insecticide composition (Composition B) is effective in treating surfaces against termites using a method that determines a dose of about 43 ml / m ^{2 of the} wood being actually treated, considering the possibility of an efficacy threshold below the test dose (43). ml / m ² ), several tests were performed using a treatment-based spraying of the insecticide composition on the wood needed for the treatment.

2.1.2. Spraying

2.1.2.1 Materials and Methods

The test insecticide composition is Composition B. No solvent was used to dilute the insecticide composition. Pure gelatin, as specified in the standard, was used to seal the ends of the test tubes.

The biological agent used was Reticulitermes lucifugus Rossi (a termite species commonly found in Spain).

The test standard was UNE Standard 56411: 1992 (ΕΝ 118: 1990) “Wood preservatives. Determination of preventive efficacy against Feytaud's Reticulitermes santonensis. Laboratory method. "

The test was carried out on wooden specimens derived from Pinus sylvestris L., originating from Mount Burgui'n (Navarra), according to the standard.

Test concentrations of the insecticide formulation were as follows: 13.33 ml / m ² and 16.66 ml / m ² . The insecticide composition was applied by spraying.

2.1.2.2 Processing

2000 June 20 the indicated doses of the insecticide composition, with an error of ± 5%, were applied by spraying on one side of the sample, weighed by weighing to provide the desired amount of treatment, thereby obtaining the absorbances and refractories of the insecticide composition shown in Tables 3 and 4.

After treatment, the specimens were left to dry and stored in an air-conditioning chamber at 20 ± 2 ° C and 65 ± 5% relative humidity for 10 weeks before contacting or aging the insect colonies.

In order to aging the test tubes, the test tubes were subjected to an aging test by evaporation for 12 weeks, as described in the UNE Standard 56406: 1992 (Wood preservatives.

2000 July 27 the termite colonies were contacted with the specimens using polyurethane foam (for non-agglomerated specimens); October 30 (for aging specimens by evaporation) and test equipment were placed in a chamber at 27 ± 2 ° C and 75 ± 5% relative humidity for 8 weeks.

The final study was conducted in 2000. October 24 (for non-aged specimens) and 2001 January 2 (for aging samples by evaporation). Attacks on the test tubes were scored on the following scale:

0: No Attack Sign 1: Ready Attack 2: Easy Attack 3: Medium Attack 4: Strong Attack

The results obtained are shown in Tables 3 and 4.

table

Preventive efficacy against termites (UNE 56411: 1992) Non-aged specimen. Spraying

Test sample number Doses tested Inquiry results Attacks degree (0-4) Theoretical doses Doses applied Survival g / m ² ml / m ² g / m ² ml / m ² O (%) S and N (n) 1 16.16 17.95 0 0-0 0 3 14.98 16.64 0 0-0 0 4 12.0- 13.33- 15.05 16.72 0 0-0 0 5 15.0 16.66 13.75 15.27 0 0-0 0 7th 16.33 18.14 0 0-0 0 9th 15.03 16.70 0 0-0 0 TA Do not treat - - 83 1-1 4 TB examples - - 86 2-1 4 TB ' - - 87 1-1 4

[O: laborers; S: Warriors; N: young insects; n: quantity] table

Effectiveness of Prevention Against Termites (UNE 56411: 1992)

Aged specimen (EN 73). Spraying

Test sample number Doses tested Inquiry results Attacks degree (0-4) Theoretical doses Doses applied Survival g / m ² ml / m ² g / m ² ml / m ² O (%) S and N (n) 1 ' 12.0- 15.0 13.33- 16.66 16.16 17.95 0 0-0 0 3 ' 14.98 16.64 0 0-0 0 4 ' 15.05 16.72 0 0-0 0 5 ' 13.75 15.27 0 0-0 0 T 16.33 18.14 0 0-0 0 9 ' 15.03 16.70 0 0-0 0 TA ' Do not treat examples - - 94 2-1 4 TB ' - - 86 3-2 4 TB - - 91 2-1 4

[0: laborers; S: Warriors; N: young insects; n: quantity]

The results obtained clearly show that the test insecticide composition (Composition B) is effective in treating surfaces against termites using a method of adjusting the dose between 13.33 and 16.66 ml / m ^{2 for the} wood being actually treated. Given that the stated product may be effective at a dose of at least 13.33 ml / m ² , it is likely to be effective at lower doses than those defined.

2.2 Limitation of the preventive efficacy against termites

2.2.1 Materials and Method

The test insecticide composition is Composition B.

The biological agent used is R. Lucifugus Rossi (a termite species commonly found in Spain).

The test standard was UNE Standard 56410: 1992 (EN 117: 1990) 'Wood preservatives. Determination of the preventive efficacy limit against FeytaudO Reticulitermes santonensis. Laboratory method. "

The test was carried out on wooden specimens derived from Pinus sylvestrisL, originating from Mount Burgui'n (Navarra), according to the standard.

Xylene was used to dilute the insecticide composition. The concentrations tested were as follows: 0%; 0.01%; 0.023%; 0.045%; 0.065% and 0.085%.

2.2.2 Processing

2000 June 16 impregnation of the specimens was performed under atmospheric pressure vacuum as specified in the standard, thereby obtaining the absorbances and retentions of the insecticide composition shown in Tables 5 and 6.

After treatment, specimens were allowed to dry and stored in an air-conditioning chamber at 20 ± 2 ° C and 65 ± 5% relative humidity for 6 weeks prior to contact with or aging of insect colonies.

In order to aging the specimens, the latter, once processed, were subjected to an aging test by evaporation for 12 weeks, as described in the UNE Standard 56406: 1992.

2000 July 27 colonies of termites were contacted with specimens using polyurethane foam (for non-agglomerated specimens); October 30 (for aged specimens by evaporation) and test equipment were placed in a chamber at 27 ± 2 ° C and 75 ± 5% relative humidity for 8 weeks.

The final study was conducted in 2000. September 18 for untested specimens; January 2 for aging samples by evaporation. Attacks of the specimens were rated on the following scale:

0: No Attack Sign 1: Ready Attack 2: Easy Attack 3: Medium Attack 4: Strong Attack

The results obtained are shown in Tables 5 and 6.

These results clearly demonstrate that the tested insecticide composition (Composition B) is effective for deep treatment against termites using a method that provides a retention of approximately 0.04 kg / m ^{3 of} wood that is effectively impregnated. Given that the indicated product may be effective at the lowest dose (0.01%), it is likely that the efficacy threshold is below the indicated retention.

Determination of the limit of preventive efficacy against termites (UNE 56410: 1992) c

'5 c

<e

Λ

Vi c

c

Φ

M

Φ

Z

Surviving termites z - CM CM o - - o v ™ o o o o Έ ω CM - - o o O o o o o o o (%) 0 228 226 τ- 00 CM o - O o o o o o o Visual study (0-4) m · M- - - o v- * - o - - v Product retention Value (kg / m ³ ) o o o 0.04 o o ' 0.18 Specimen (kg / m ³ ) o o O 0.04 to 0.04 M ^- O o 0.10 0.10 0.10 co Τ- ο ' 00 o 00 o Leakage in solution (m _r m ₀ ) (g) IO co S- " Τ- Ο co ' CO 05 S. ' 7.33 7.27 7.24 8.23! 7.80 co σ> I- ' 00 co 7.68 00 M; l < Sample No. CM X co X CO X - CM co co Etc. T— r- CO co 34 36 Tested concentrations (%) Xylene (0) 0.01 0.023 0.045

continuation of the table

Surviving termites N (n) O - o o o o - - CM ω o o o o o o CM v— CM (%) 0 o o o o o o 239 226 232 visual study (0-4) T " - - - o t— M M Product retention Value (kg / m ³ ) 0.28 0.42 i 1 1 t Specimen (kg / m ³ ) 0.27 0.27 0.29 CM M · o " 0.42 0.42 1 1 1 Solution leakage (m-i-mo) (g) 8.05 χ- Ο oo " 8.41 9.41 9.45 9.46 1 • 1 Sample No. 38 39 40 49 50 T " LO v H T2 T3 Tested concentrations (%) 0.064 0.085 Pilot solutions

CO o

S c

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JD (0>

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JZ ώ

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Table Ό

Threshold for preventive efficacy against termites (UNE 56410: 1992) Aged specimen (EN 73)

Surviving termites N (n) CM 00 oo o o CM O CM o o o o S (n) T " o o o o O O O o o o o 0 (%) 195 210 219 o o - O O o o o o Visual study (0-4) M M o o O O O o o - o Product retention [Estimated (kg / m ³ ) O O O * 0.04 0.10 0.19 Specimen (kg / m ³ ) O O o 0.04 0.04 , 0.04 0.10 0.10 60 * 0 0.19 0.20 0.19 <0 _ ay o «o Jij (0 4d E; & α. ω L O> f -K E, 7.22 8.02 7.56 7.33 7.64 7.51 60'8 7.76 7.26 7.70 7.84 7.59 Sample No. X O X CM X r-- 00 05 05 22nd 23rd 26th 27th 32 Tested concentrations (%) Xylene (0) ____________ 0.01 0.023 0.045

continuation of the table

Surviving termites z o T " o o o o co 04 co | S (n) o o o o o o V 04 - (%) 0 o o o o o o 95 00 00 σ> 00 Visual study (0-4) o Ύ— - - o 't «T Product retention [Estimated (kg / m ³ ) 0.28 0.42 1 1 • Specimen (kg / m ³ ) 0.28 0.27 0.28 0.42 0.42 0.42 1 1 1 ay O w ° Jū ra jc ę -o & e- .g to & w. ♦ = * · .K 8.07 7.90 8.22 9.34 9.37 9.35 1 1 1 Sample No. 38 39 40 49 T " in 52 H T2 CO H Tested concentrations (%) 0.064 0.085 Pilot solutions

O: Workers: S: Warriors; N: young insects; n: quantity '

Claims (6)

DEFINITION OF INVENTION 1. Carrier useful for treating trees with chemical compounds, characterized by having the following composition: Components Percentage of total weight (%) Toluene 40-70 Xylene 6-40 Benzophenone 3-18 Butyl glycol 2-9 Cetyl acetate 1-7 Methanol 0.3-4 2. The carrier of claim 1 having the following composition: Components Percentage of total weight (%) Toluene 64 Xylene 16th Benzophenone 10th Butyl glycol 5 Cetyl acetate 4 Methanol 1 3. A composition comprising at least one chemical compound and a carrier according to any one of claims 1 or 2. 4. The composition of claim 3, wherein said chemical compound comprises one or more insecticides and / or one or more fungicides. 5. The composition of claim 4, wherein said chemical compound is selected from chlorpyrifos, fipronil, silafluofen, acetamiprid, ethofenprox, tripropyl isocyanurate, phenobucarb, hexaflumuron, fenitrothion, esfenvalerate, clifambam, difidoblone, of their mixtures. 6. A method of treating wood, comprising treating the wood with a composition according to any one of claims 3 to 5. The method of claim 6 for treating and / or preventing damage caused by biological agents that are detrimental to the tree, comprising treating the tree with a composition according to any one of claims 4 or 5.