CZ200327A3 - Carrier usable for application of chemical compounds to wood - Google Patents

Abstract

The carrier contains toluene (40-70), xylene (6-40%), benzophenone (3 to 18%), butyl glycol (2 to 9%), cetyl acetate (1) to 7%) and methanol (0.3 to 4%). This carrier has a high index penetration in wood and can be used to prepare preparations for the treatment of wood containing one or more chemical compounds such as insecticides or fungicides and which are used to treat or prevent damage caused biological agents that are harmful to wood.

Description

Technical field

The present invention generally relates to a method of treating wood in the sense of applying chemical compounds. The invention specifically relates to a carrier suitable for applying chemical compounds to wood.

BACKGROUND OF THE INVENTION

Many harmful biological agents are known to be able to attack wood and cause significant damage. Among the biological agents harmful to wood are insects such as beetles (a term that includes various species of wood-eating insects whose larvae gnaw and drill wood), termites, moths, etc., and fungi such as Poria vaillantii Fr., Coniophora cerebella Duey, Merulius lacrymans Wulf, Lentinus lepideus Fr., Lenzites sepiaria Wulf, Chaetomium globosum Kunz, etc.

Products generally used for the treatment and preservation of wood generally comprise one or more active ingredients that are effective against harmful biological agents, for example one or more insecticides and / or fungicides, and a carrier for introducing said active ingredients into tunnels and cavities formed in the wood harmful biological agents.

The number of carriers that are effective as active carriers of the component within the wood is currently very limited. Such carriers commonly used in wood treatment and preservation products include water, inorganic derivatives of arsenic, pentachlorophenol and creosote.

Water is the most used carrier. However, it hardly penetrates the wood, so that the active ingredients applied to the wood when water is used do not sufficiently penetrate into the wood, remain on the surface and therefore significantly limit the effectiveness of the active ingredient. Other carriers have a very low wood penetration index, generally found between 2 and 6 mm per 24 hours. In soft and porous wood, penetration indexes are up to 6 mm, in hard and non-porous wood the carriers penetrate 2 and 3 mm within 24 hours.

It is therefore necessary to find new carriers which are suitable for applying chemical compounds to wood and have a favorable high wood penetration index.

The present invention provides a solution to an existing need by including the development of a new carrier for applying chemical compounds to wood containing a mixture of several components. This carrier has a high wood penetration index, as determined by the experiment, which comprises applying the carrier to a point on the.

- wood, letting it act for a certain time and determining the progress of the carrier face by chopping wood and measuring the progress of the carrier face.

A carrier such as that provided by the present invention is suitable for treating wood, specifically for treating and preventing damage caused by biological agents harmful to wood.

The subject of the present invention is the composition of said carrier for applying chemical compounds to wood.

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

It is a further object of the present invention to provide a method of treating wood comprising applying a mixture in sufficient quantity to the treated wood.

SUMMARY OF THE INVENTION

The invention provides a carrier which is suitable for applying chemical compounds to wood, i.e. a carrier of the invention, comprising:

Component_Weights percent of the total mixture (%)

Toluene 40 to 70

Xylene 6 to 40

Benzophenone 3 to 18

Butylglycol 2 to 9

Cetyl acetate 1 to 7

Methanol 0,3 to 4

All of the components constituting the carrier of the invention are commercial products. As used herein, the term "benzophenone" includes benzophenone (diphenylmethanone) and its hydroxylated or methoxylated derivatives (see, eg, The Merck Index, 11th Edition, 1989). Similarly, the term "butyl" includes any butyl isomer.

In a particular embodiment, the carrier of the present invention has the following composition:

Component_Weights percent of the total mixture (%)

Toluene

Xylene

Benzophenone · 3 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·

Butylglycol

Cetyl acetate

Methanol

The carrier may be readily prepared by a process comprising mixing the ingredients in the desired proportions.

Several experiments have clearly shown a high penetration index of the carrier of the present invention on various woods (see Example 1) and thus can be used to apply chemical compounds to wood, for example chemical compounds suitable for wood treatment, specifically to treat and prevent damage caused by biological agents. who are harmful to wood (see Example 2).

The invention also provides a composition, that is, a composition of the invention, comprising at least one chemical compound and a carrier of the present invention. The carrier may be present in the composition over a wide range, for example, the composition of the invention may contain from 0.1 to 99.9% by weight of the carrier, the remainder being a compound or chemical compounds, in which case the chemical compounds may be present in any weight ratio which is suitable for them. The composition of the present invention can be readily prepared by mixing the carrier with said compound or chemical compound in a suitable weight ratio. The composition of the present invention is in liquid form, for example in solution or dispersion.

In a particular embodiment of the invention, the composition of the present invention is a composition suitable for treating wood, comprising one or more chemical compounds that are suitable for treating wood, in addition to the carrier of the present invention. In another more refined embodiment of the invention, the composition of the present invention is an insecticidal or fungicidal composition suitable for treating wood and / or preventing damage caused by insects and / or fungi attacking wood containing one or more insecticides and / or one or more fungicides in addition to the carrier of the present invention. Such insecticides and fungicides which may be present in the composition of the invention include: chlorpyrifos, fipronil, silafluofen, acetamiprid, etofenprox, tripropylisocyanurate, fenobucarb, hexaflumuron, fenitrothion, esfenvalerate, imidacloprid, difluobenzuril, propoxybenzuril, lambda-benzothilone, lambda-benzothilone, lambda-benzothilone . In this case, the composition of the invention is suitable for inhibiting the development of biological agents harmful to wood, such as insects, for example beetles, termites, moths, etc., and fungi, for example Poria vaillantii Fr., Coniophora cerebella Duey, Merulius lacrymans Wulf, Lentinus lepideus Fr. ., Lenzites sepiaria Wulf, Chaetomium globosum Kunz, etc.

The wood penetration index obtained with the composition of the present invention generally depends on the carrier used. Said penetration index may vary depending on the type of wood as well as its moisture content.

The invention also provides a method of treating wood comprising applying the composition of the invention to the treated wood in sufficient quantity to achieve the desired effect. As used herein, the term "applying the composition of the invention to the treated wood" includes applying the composition of the invention to the surface of the treated wood, as well as introducing the composition of the invention in any suitable manner into tunnels and cavities formed in the wood by exposure, for example harmful biological agents.

DETAILED DESCRIPTION OF THE INVENTION

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

Example 1

Determination of wood penetration index for carrier

Materials and method

The method used to determine the carrier wood penetration index consists of applying a specified amount of test carrier (between 3 and 10 ml) to a point (origin) on the wood surface, allowing the carrier to act for a specified time (between 1 to 23 minutes) and measuring the carrier front splitting the wood and measuring the progress of the carrier within the wood from the beginning.

The woods used were representative of a wide range, from very soft and porous woods to very hard and non-porous woods. The woods that have been specifically tested are: poplar, Scotch pine, walnut, cedar and beech. The wood was cut into pieces of 20 x 7 x 7 cm.

The carriers tested were those described below. When the experiments were carried out and the results obtained, products were selected and discarded those that did not meet the desired effect. A carrier mixture of the present invention was obtained.

I. Combination of 2 different components:

1) Ethylene glycol / toluene

2) benzophenone-2 / ethyl ether

3) disodium hydrogen phosphate / monoxinol-9

4) butyl glycol / acetylene

5) methanol / benzene

-5 • ·

·· ····

6) dodecyldiaminoethyl / xylene

7) sodium sulfate / cetyl acetate

8) sodium hydroxide / methylene chloride

Different concentrations (in each case between 0.5 to 80% by weight of the total) of each single component present in each combination were tested. The remainder to 100% was composed of the second component.

II. Combination of 3 different components:

1) cetyl acetate / sodium hydroxide / monoxinol-9

2) butyl glycol / ethyl ether / dibasic sodium phosphate

3) acetylene / dodecyldiaminoethyl / toluene

4) benzene / methylene chloride / sodium sulfate

5) benzophenone-2 (acetylene) monoxinol-9

6) xylene / ethylene glycol / methanol

Different concentrations (in each case between 0.5 to 80% by weight of the total) of each single component present in each combination were tested. The remainder to 100% was composed of other components.

III. Combination of 4 different components:

1) ethyl ether / methanol / butyl glycol / sodium hydroxide / monoxinol-9

2) sodium sulfate / xylene / methylene chloride / benzene

3) acetylene / dodecyldiaminoethyl / cetyl acetate / disodium hydrogen phosphate / acetylene

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

5) xylene / ethylene glycol / methanol

Different concentrations (in each case between 0.5 to 80% by weight of the total) of each single component present in each combination were tested. The remainder to 100% was composed of other components.

IV. Combination of 5 different components:

1) methanol / acetylene / ethylene glycol / benzene / dibasic sodium phosphate

2) xylene / methylene chloride / dodecyldiaminoethyl / sodium sulfate / monoxinol-9

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

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

Different concentrations (in each case between 0.5 to 80% by weight of the total) of each single component present in each combination were tested. The remainder to 100% was composed of other components.

V. Combination of 6 different components:

• 0

0 0 0 0 0 0 0 0 0 0 0 0 0000 00 00

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

2) sodium hydroxide / cetyl acetate / sodium sulfate / xylene / dodecyldiaminoethyl / benzene

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

4) toluene / xylene / benzophenone-2 / butyl glycol / cetyl acetate / methanol

For each combination, different concentrations (in each case between 0.5 to 80% by weight of the total) of each component present in each combination were tested. The remainder to 100% was composed of other components.

Results

In general, the best results expressed as the measurement (in mm) of the front of the carrier were obtained with a carrier comprising 6 different components, specifically a composition of type V.4, consisting of toluene, xylene, benzophenone-2, butyl glycol, cetyl acetate and methanol. . Specifically with a carrier having the composition of mixture A: 64% toluene, 16% xylene, 10% benzophenone-2, 5% butyl glycol, 4% cetyl acetate and 1% methanol, all percentages by weight based on total weight, results are included in Table 1.

Table 1. Penetration index (PI) of composition A for different wood species

Wood Amount (ml) Time (min) PI (mm) Poplar 3 1 10 Poplar 6 2.5 15 Dec Poplar 10 6 20 May Scotch pine 3 2 10 Scotch pine 6 5 15 Dec Scotch pine 10 10 20 May Walnut 3 6 10 Walnut 6 14 15 Dec Walnut 10 20 May 20 May Cedar 3 8 10 Cedar 6 17 15 Dec Cedar 10 23 20 May Beech 3 8 10 Beech 6 17 15 Dec Beech 10 23 20 May

• · · · · · · · · ·

4 4 9 • · · ··· ♦ · ··

Further experiments carried out with compositions containing one or more insecticides or fungicides together with the carrier provided by the present invention clearly show that the penetration index of the composition was the same as the carrier (without active ingredient).

Example 2

Insecticidal composition and efficacy trials

An insecticidal composition was prepared, i.e. a composition of mixture B having the following composition: Fenitrothion 25% (total weight / volume)

Esfenvalerate 2% (total weight / volume)

Carrier * Residue up to 100% * Carrier composition was as follows: 64% toluene, 16% xylene, 10% benzophenone-2, 5% butyl glycol, 4% cetyl acetate and 1% methanol, all percentages by weight based on total weight (corresponds to composition of mixture A in Example 1).

The density of the insecticidal composition was 0.9 g / ml.

The insecticidal composition was obtained by adding fenitrothion and esfenvalerate, in an appropriate amount, to the carrier obtained previously by mixing its components in an appropriate amount.

The following experiments were carried out to determine the effectiveness of said insecticidal composition (composition B) containing the carrier provided by the present invention:

Determination of preventive efficacy against termites a

Determination of the limit of preventive effectiveness against termites

Determination of preventive efficacy against termites

2.1.1

Material and methods

The insecticidal composition to be tested is the composition of mixture B. No solvent was used to dissolve the insecticidal composition. Pure gelatin was used to block test tube openings as indicated by the standard.

The biological material used was Reticulítermes lucifugus Rossi.

The standard for the experiment was UNE standard 56 411: 1992 (Una Norma Espaňola - Spanish standard) (EN 118: 1990) “Wood protection. Determination of preventive activity against Reticulitermes santonensis from Feytaud. Laboratory method. ”• · • · * 9

9

9 9 9

999 98 9999

The experiment was performed on wooden test tubes obtained from Sinus sylvestris L. originating in the Valsain Mountains, according to the requirements of the standard. The minimum dose obtained by treatment with a paint as indicated by the standard was 43.05 ml / m ² .

Treatment

On March 10, 2000, the smallest amount of insecticidal product (43.05 ml / m ² ) with a tolerance of ± 5% was applied by coating on one side of the test tube, checked by weighing to see if the required amount was applied and which are listed in Table 2.

After treatment, the test sample was dried and treated in an air-conditioned chamber at 20 ± 2 ° C and 65 ± 5% relative humidity for 7 weeks prior to contact with insect colonies. Termite colonies were contacted with the test tube using polyurethane foam on May 3, 2000 and the test apparatus was placed in a chamber at 27 ± 2 ° C and 75 ± 5% relative humidity for 8 weeks.

The final evaluation was performed on June 26, 2000. The challenge of the test tubes was evaluated according to the following scale:

0: No signs of attack 1: Random attack 2: Light attack 3: Medium attack 4: Strong attack

The results obtained are shown in Table 2.

Table 2. Termite prevention efficacy (ONE 56 411: 1992). Fresh test tubes. Painted.

Number Test dose Test results Degree tested Theoretical benefits Applied doses Survival attack sample g / m ² ml / m ² g / m ² ml / m ² O(%) SaN (n) (0 to 4) 1 38.75 43.05 0 0-0 0 3 38.75 43.05 0 0-0 0 4 12.0 to 13.33 to 38.75 43.05 3 0-0 0 5 15.0 16.66 38.75 43.05 1 0-0 0 7 40.0 44.44 0 0-0 0 9 40.0 44.44 2 0-0 0 TI Untreated sample - - 91 0-2 4

• · · · · ·

-9 * · ····

T2 Untreated sample - - 96 1-2 4 T3 - - 97 1-3 4 (O: works (S: soldiers, N: queens, n: number)

The results obtained clearly show that the test insecticide composition (composition B) is effective against termites after surface treatment in the sense of a method providing a dose of about 43 ml / m of wood being treated. To determine the possibility that the efficacy limit is below the test dose (43 ml / m ² ), several attempts have been made using a treatment method based on spraying the insecticidal composition on the treated wood.

2.1.2 Spraying

Material and methods

The insecticidal composition to be tested is the composition of mixture B. No solvent was used to dissolve the insecticidal composition. Pure gelatin was used to block test tube openings as indicated by the standard.

The biological material used was Reticulitermes lucifugus Rossi (a termite species widely distributed in Spain).

The standard for the experiment was UNE standard 56 411: 1992 (EN 118: 1990) "Wood protection. Determination of preventive activity against Reticulitermes santonensis from Feytaud. Laboratory method. ”

The experiment was carried out on wooden test tubes obtained from Pinus sylvestris L. originating in the Burgui Mountains (Navarra), according to the requirements of the standard.

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

Treatment

On June 20, 2000, they were applied by spraying a labeled dose of the insecticidal composition, with a tolerance of ± 5%, on one side of the test sample, checked by weighing whether the required amount was applied and thus the absorption and retention of the insecticidal composition shown in Table 3 were obtained.

After treatment, the test sample was dried and treated in an air-conditioned chamber at 20 ± 2 ° C and 65 ± 5% relative humidity for 10 weeks before contact with the insect colony or aging.

To age the test tube, the sample was subjected to an aging experiment by evaporation for 12 weeks, as methodologically stated in UNE standard 56 406: 1992 (Wood protection. Acceleration trials of treated wood against biological experiments. Evaporation test).

• ·

-10 * 9999 99 9

9 9 9 9 9 • 9 9 9 9999 9

999 9999 • 999 99

Termite colonies were contacted with the test sample using polyurethane foam on July 27, 2000 (for a fresh test sample) and October 30, 2000 (for a test sample that was aged by evaporation), and the test apparatus was placed in a chamber at 27 ± 2 °. C and a relative humidity of 75 ± 5% for 8 weeks.

The final evaluation was performed on October 24, 2000 (for a fresh sample) and January 2, 2001 (for a test sample that was aged by evaporation). The attack on the test samples was evaluated according to the following scale:

in

Claims (6)

0: No signs of attack 1: Random attack 2: Light attack 3: Medium attack 4: Strong attack The results obtained are shown in Tables 3 and 4. Table 3. Termite prevention efficacy (UNE 56 411: 1992). Fresh test sample. Spraying. Number Test dose Test results Degree tested Theoretical benefits Applied doses Survival attack sample g / m ² ml / m ² g / m ² ml / m ² O(%) S and N (n) (0 to 4) 1 16.16 17.95 0 0-0 0 3 14.98 16.64 0 0-0 0 4 12.0 to 13.33 to 15.05 16.72 0 0-0 0 5 15.0 16.66 13.75 15.27 0 0-0 0 7 16.33 18.14 0 0-0 0 9 15.03 16.70 0 0-0 0 THE - - 83 1-1 4 TB Untreated sample - - 86 2-1 4 TC - - 87 1-1 4 (O: workers, S: soldiers, N: queens, n: number) • 4 · 44 ·· • * · 4 4 4 4 4 4 · 4 4 4 4 4 4 4 4444 4444 Table 4. Preventive efficacy against termites (UNE 56 411: 1992). Aged test sample (EN 73). Spraying. 44 ···· Number Test dose Test results Degree tested Theoretical benefits Applied doses Survival attack sample g / m ² ml / m ² g / m ² ml / m ² O(%) SaN (n) (0 to 4) 1 ' 16.16 17.95 0 0-0 0 3 ' 14.98 16.64 0 0-0 0 4 ' 12.0 to 13.33 to 15.05 16.72 0 0-0 0 5 ' 15.0 16.66 13.75 15.27 0 0-0 0 7 ' 16.33 18.14 0 0-0 0 9 ' 15.03 16.70 0 0-0 0 THE' - - 94 2-1 4 TB ' Untreated sample - - 86 3-2 4 TB - - 91 2-1 4 (O: workers, S: soldiers, N: queens, n: count) The results obtained clearly show that the test insecticidal composition (composition of composition B) is effective against termites after surface treatment in the sense of a method providing a dose of between 13.33 and 16.66 ml / m of wood being treated. It can be seen that the product is effective at the lowest dose of 13.33 ml / m ² and is therefore likely to be effective at doses lower than those indicated. Determination of the limit of preventive effectiveness against termites. Material and methods The insecticidal composition to be tested is the composition of mixture B. The biological material used was Reticulitermes lucífugus Rossi (a termite species widely distributed in Spain). The standard for the experiment was UNE standard 56 410: 1992 (EN 117: 1990) “Wood protection. Determination of preventive activity against Reticulitermes santonensis from Feytaud. Laboratory method. ” The test was carried out on wooden test specimens obtained from Pinus sylvestris L. originating in the Burgui Mountains (Navarra), according to the requirements of the standard. Xylene was used to dilute the insecticidal composition. The concentrations tested were as follows: 0%, 0.01%, 0.023%, 0.045%, 0.065% and 0.085%. Treatment fc · ···· · fcfc · · · · · · · · · · · ··· · - 12 - · · · · · ♦ * * * * * * On June 16, 2000, the test sample was impregnated using the method described in the standard, thus obtaining the absorption and retention of the insecticidal composition shown in Tables 5 and 6. After treatment, the test sample was dried and treated in a conditioned chamber at 20 ± 2 ° C and 65 ± 5% relative humidity for 6 weeks before contact with insect colonies or aging. To age the test tube, the sample was subjected to an aging experiment by evaporation for 12 weeks as methodologically stated in UNE standard 56 406: 1992. Termite colonies were contacted with the test sample using polyurethane foam on July 27, 2000 (for a fresh test sample) and October 30, 2000 (for a test sample that was aged by evaporation), and the test apparatus was placed in a chamber at 27 ± 2 °. C and a relative humidity of 75 ± 5% for 8 weeks. The final evaluation was performed on September 18, 2000 for a fresh sample and January 2, 2001 for a test sample that was aged by evaporation. The infestation of the test samples was evaluated according to the following scale: 0: No sign of attack 1: Random attack 2: Light attack 3: Medium attack 4: Strong attack The results obtained are shown in Tables 5 and 6. These results clearly show that the test insecticidal composition (composition B) is effective against termites after in-depth treatment in the sense of providing a retention of about 0.04 kg / m ^{3 of} wood being impregnated. It can be seen that the product is effective at the lowest dose (0.01%), so it is likely that the efficacy limit is below this retention. 13 Table 5. Preventive Effectiveness Against Termites (UNE 56 410: 1992). Fresh test sample. Spraying. 49 44 43 4 4 4 4 9 4 4 4 4 4 9 9 9 9 444 4994 44 · · » 4 4 4 4 9 4 4 99 ·· Tested concentration (%) Number tested sample Solution discharge (mj-m ₀ ) (g) Product retention Visual Surviving termites Test sample (kg / m ³ ) Diameter (kg / m ³ ) evaluation (0-4) O(%) S (n) N (n) Xylene (0) X ₂ 7.65 0 0.00 4 228 2 1 x ₃ 8.01 0 4 226 1 2 x ₈ 7.93 0 4 231 1 2 0.01 1 7.33 0.04 0.04 1 0 0 0 2 7.27 0.04 1 1 0 1 6 7.24 0.04 0 5 0 1 0,023 13 8.23 0.10 0.10 1 0 0 0 14 7.80 0.10 1 0 0 1 17 7.93 0.10 0 0 0 0 0,045 33 7.38 0.18 0.18 1 0 0 0 34 7.68 0.18 1 0 0 0 36 7.48 0.18 1 0 0 0 0,064 38 8.05 0.27 0.28 1 0 0 0 39 8.01 0.27 1 0 0 1 40 8.41 0.29 1 0 0 0 0,085 49 9.41 0.42 0.42 1 0 0 0 50 9.45 0.42 0 0 0 0 51 9.46 0.42 1 0 0 0 Tested solutions TI - - - 4 239 2 1 T2 - - - 4 226 1 1 T3 - - - 4 232 2 2 (O: workers, S: soldiers, N: queens, n: count) ·· ···· 9 · · · · - 14. Table 6. Termite preventive effectiveness limit (UNE 56 410: 1992). Aged test sample (EN 73). · ► «tt 9 9 9 9 4 9 4 ·? · ·· Tested concentration (%) Number tested sample „Solution discharge " (m, -mo) Product retention Visual Surviving termites Test sample (kg / m ³ ) Diameter (kg / m ³ ) evaluation (0-4) by (%) S (n) N (n) Xylene (0) Xi 7.22 0 0.00 4 195 1 2 Xio 8.02 0 4 210 0 3 X ₁₂ 7.56 0 4 219 0 3 0.01 7 7.33 0.04 0.04 0 0 0 0 8 7.64 0.04 0 0 0 0 9 7.51 0.04 0 1 0 2 0,023 19 Dec 8,09 0.10 0.10 0 0 0 0 22nd 7.76 0.10 0 0 0 2 23 7.26 0.09 0 0 0 0 0,045 26 7.70 0.19 0.19 0 0 0 0 27 Mar: 7.84 0.20 1 0 0 0 32 7.59 0.19 0 0 0 0 0,064 38 8.07 0.28 0.28 1 0 0 0 39 7.90 0.27 0 0 0 1 40 8.22 0.28 1 0 0 0 0,085 49 9.34 0.42 0.42 1 0 0 0 51 9.37 0.42 1 0 0 0 52 9.35 0.42 0 0 0 0 Tested solutions Tl - - - 4 95 1 3 T2 - - - 4 88 2 2 T3 - - - 4 89 1 3 (O: workers, S: soldiers, N: queens, n: count) * · - 15 PATENT CLAIMS • · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·. · · · · · · · · A carrier for the application of chemical compounds to wood, comprising: Component % By weight of the whole mixture Toluene 40 to 70% Xylene 6 to 40% Benzophenone 3 to 18% Butylglycol 2 to 9% Cetyl acetate 1 to 7% Methanol 0.3 to 4% . Carrier according to claim 1, characterized in that it comprises Component % By weight of the whole mixture Toluene 64% Xylene 16% Benzophenone 10% Butylglycol 5% Cetyl acetate 4% Methanol 1% A composition comprising at least one chemical compound and a carrier according to claims 1 and 2. Composition according to claim 3, characterized in that the chemical compound contains one or more insecticides and / or fungicides. Composition according to claim 4, characterized in that the chemical compound is selected from the group consisting of chlorpyrifos, fipronil, silafluofen, acetamiprid, etofenprox, tripropylisocyanurate, fenobucarb, hexaflumuron, fenitrothion, esfenvalerate, imidacloprid, cyfluobenzuril, lambda-benzothilone, lambda-benzothilone, lambda-benzothilone , propiconazole and mixtures thereof. A method of treating wood, characterized in that a composition according to claims 3 to 5 is applied to the treated wood. ·· · · · · · · · · -16Ί. The method of claim 6 for the treatment or prevention of damage caused by biological agents harmful to wood, characterized in that a composition according to claim 4 or 5 is applied to the treated wood.