JP5649154B2 - Wood preservative treatment method - Google Patents

Description

The present invention relates to a wood preservative treatment method that can reliably impart an anti-ant effect to a plywood or a veneer laminate with a smaller amount of medicine than before.

Conventionally, the ant-proofing treatment for plywood or single-plate laminate has been mixed with chemicals in the single-plate adhesive layer (Patent Document 1). Moreover, the formaldehyde used for the adhesive agent played a part of the insect repellent (formaldehyde itself shows an insect repellent effect). An organic phenolic agent is also added to increase the ant protection effect (Patent Document 2). However, in recent years, low formaldehyde adhesives have been used due to the problems of sick houses and VOCs, and plywood and veneer laminates have been used as structural materials for homes, increasing strength and increasing production efficiency. For this reason, since the thickness of the single plate constituting the plywood or the single plate laminated material has increased, it has been difficult to obtain a sufficient drug effect even if the amount of the drug added is increased. Furthermore, there is a limit to the amount of drug added to the adhesive that does not affect the performance of the adhesive, and the situation is difficult from the viewpoint of drug cost.
JP-A-9-136304 JP 2000-192001 A

In the present invention, an insecticidal composition is added into a single-plate adhesive of a plywood or a single-plate laminated material, and further, an insecticidal composition is applied, sprayed or dipped onto the surface layer, thereby reducing the amount of drug added compared to the conventional one. The purpose is to provide high wood preservation performance and protect the wood surface and inside from wood-damaging insects such as termites.

As a result of diligent research to solve the above problems, the present inventor mixed an insecticidal composition into the adhesive of the plywood or veneer laminate, and further processed the insecticidal composition on the surface of the plywood or veneer laminate. Thus, the present invention relates to a plywood or veneer laminate capable of obtaining a sufficient ant-repellent effect even when a smaller amount of chemical is used than before, and a preservative treatment method thereof.

That is, the present invention uses an adhesive mixed with an insecticidal composition having a water solubility at 20 ° C. of 100 mg / L or more to bond three or more layers of softwood veneer having a thickness of 1.8 mm or more, and further at 20 ° C. Applying, spraying, or dipping a wood preservative containing an insecticidal composition with a water solubility of 100 mg / L or less to the inside of a plastic container filled with 150 ant termite ants and 15 soldier ants In addition, the plywood or veneer laminate or the wood preservation thereof is characterized by imparting a high wood preserving effect to the plywood and veneer laminate that are not damaged by the termite group even after standing for 21 days. The invention relates to a processing method.

The wood-preserving plywood and veneer laminate according to the present invention is obtained by placing the surface layer veneer in a plastic container in which 150 termite ants and 15 soldier ants in a starved state are placed, and after standing for 21 days. No damage to the group.

In the present invention, the general formula (1),
Or general formula (2)
(In the formula, A represents 6-chloro-3-pyridyl group, 2-chloro-5-thiazolyl group, tetrahydrofuran-2-yl group, tetrahydrofuran-3-yl group, 5-methyltetrahydrofuran-3-yl group, 3-pyridyl group. Group, 6-bromo-3-pyridyl group, 3-cyanophenyl group, 2-methyl-5-thiazolyl group, 2-phenyl-5-thiazolyl group or 2-bromo-5-thiazolyl group, R1 represents a hydrogen atom Represents a methyl group, an ethyl group, a formyl group or an acetyl group, and R2 represents a methyl group, an amino group, a methylamino group, an N, N-dimethylamino group, an ethylamino group, an N, N-diethylamino group, an N-methyl- N-ethylamino group, 1-pyrrolidinyl group, (6-chloro-3-pyridyl) methylamino group or N-methyl-N- (6-chloro-3-pyridyl) me Tilamino group, X represents a nitrogen atom or CH group, Y represents a cyano group, a nitro group or a trifluoroacetyl group, Z represents an NH group or a sulfur atom, and n represents 2 or 3. An insecticidal composition having a solubility in water at 20 degrees of 100 mg / L or more can be used.

The insecticidal composition treated on the surface of the plywood or veneer laminate may be an insecticidal composition having a water solubility at 20 degrees of less than 100 mg / L, or may be mixed. For example, organophosphorus compounds such as fenitrothion, fenthion, diazinon, chlorpyrifos, dichlorvos, propetanephos, carbamate compounds such as carbaryl, fenobucarb, propoxur, allethrin, praretrin, phthalthrin, phenothrin, ciphenothrin, permethrin, empentrin, imiprotolin, Cypermethrin, fenvalerate, tralomethrin, etofenprox, silafluophene and pyrethroid compounds such as optical isomers and geometric isomers thereof, phenylpyrazole compounds such as fipronil, oxadiazine compounds such as indoxacarb, pyriproxy Fen, Phenoxycarb, Diflubenzuron, Chlorfluazuron, Bistrifluron, Shiromagi Insect growth regulators such as, and other insecticides like.

In order to prevent the plywood or veneer laminate surface from being spoiled, preservatives may be added and treated in the pestwood or veneer laminate adhesive and the insecticidal composition treated on the plywood or veneer laminate. Organic iodine compounds such as 3-iodo-2-propynyl-N-butyl carbamate, parachlorophenyl-3-iodopropargyl formal, 3-diiodo-2-propenyl ethyl carbonate, cyproconazole ((2RS , 3RS) -2- (4-chlorophenyl) -3-cyclopropyl-1- (1H-1,2,4-triazol-1-yl) butan-2-ol), hexaconazole ((RS) -2 -(2,4-dichlorophenyl) -1- (1H-1,2,4-triazol-1-yl) hexan-2-ol), propiconazole ((RS) -1- [ -(2,4-dichlorophenyl) -4-propyl-1,3-dioxolan-2-ylmethyl] -1H-1,2,4-triazole), tebuconazole ((RS) -1-p-chlorophenyl-4,4 -Dimethyl-3- (1H-1,2,4-triazol-1-ylmethyl) pentan-3-ol), ipconazole ((1RS, 2SR, 5RS; 1RS, 2SR, 5SR) -2- (4-chlorobenzyl) ) -5-isopropyl-1- (1H-1,2,4-triazol-1-ylmethyl) -1-cyclopentanol), azaconazole (1-[[2- (2,4-dichlorophenyl) -1,3 -Dioxolan-2-yl] methyl] -1H-1,2,4-triazole), epoxiconazole ((2RS, 3SR) -1- [3- (2-chloropheny ) -2,3-epoxy-2- (4-fluorophenyl) propyl] -1H-1,2,4-triazole), metconazole ((1RS, 5RS, 1RS, 5SR) -5- (4-chlorobenzyl) -2,2-dimethyl-1- (1H-1,2,4-triazol-1-ylmethyl) cyclopentanol), tetraconazole ((RS) -2- (2,4-dichlorophenyl) -3- ( 1H-1,2,4-triazol-1-yl) propyl-1,1,2,2-tetrafluoroethyl ether), penconazole (1- (2,4-dichloro-β-propylphenethyl) -1H-1 , 2,4-triazole), triazimephone (1- (4-chlorophenoxy) -3,3-dimethyl-1- (1H-1,2,4-triazol-1-yl) butan-2-o ), Vitertanol (1- (biphenyl-4-yloxy) -3,3-dimethyl-1- (1H-1,2,4-triazol-1-yl) butan-2-ol), microbutanyl (2-p- Chlorophenyl-2- (1H-1,2,4-triazol-1-ylmethyl) hexanenitrile), diniconazole ((E)-(RS) -1- (2,4-dichlorophenyl) -4,4-dimethyl-2) -(1H-1,2,4-triazol-1-yl) pent-1-en-3-ol), difenoconazole (cis, trans-3-chloro-4- [4-methyl-2- (1H-1) , 2,4-triazol-1-ylmethyl) -1,3-dioxolan-2-yl] phenyl-4-chlorophenyl ether), imibenconazole (4-chlorobenzyl-N- ( , 4-dichlorophenyl) -2- (1H-1,2,4-triazol-1-yl) thioacetamidate), triazimenol ((1RS, 2RS, 1RS, 2SR) -1- (4-chlorophenoxy) Triazole compounds such as -3,3-dimethyl-1- (1H-1,2,4-triazol-1-yl) butan-2-ol) can be used, and even if one or more kinds are used. good.

As the chemical agent to be processed on the surface layer of the plywood or the veneer laminate, an antifungal agent effective for wood discoloring bacteria and various kinds of moss generated on wood may be used in combination. Effective antifungal agents include, for example, imidazole compounds such as thiabendazole (TBZ), methylbenzimidazole-2-carbamate, methyl-1- (butylcarbamoyl) benzimidazole-2-carbamate, N (trichloromethylthio) phthalimide, etc. Phthalimide compounds, sulfamide compounds such as N-nitrosocyclohexylhydroxylamine aluminum, nitrile compounds such as 2,4,5,6-tetrachloroisophthalonitrile, benzoates such as 2- (thiocyanomethylthio) benzothiazole Thiazole compounds, thiocyanate compounds such as methylene bis thiocyanate, and the like can be used alone or in combination of two or more.

When mixing the neonicotinoid compound and the preservative or / and antifungal agent into the adhesive at the time of producing the plywood and veneer laminate of the present invention, those active ingredients may be used as they are, but they are usually formulated. Use. Although the kind of formulation is not particularly limited, a liquid formulation is preferable from the viewpoint of ease of handling. Examples of liquid preparations include aqueous solvents, emulsions, oils, flowables and the like, but are not limited to these preparations. The above-mentioned preparation can be prepared in the same manner as an ordinary agricultural chemical preparation. Furthermore, preservatives, stabilizers, antioxidants, chelating agents, rust preventives, antifoaming agents, and pH regulators that are effective for general bacteria to stabilize when mixed with adhesives and the preparation itself Etc. may be added. In addition, other insecticides may be mixed in order to expand the insecticidal / anticidal spectrum.

EXAMPLES Next, although an Example demonstrates in detail, this invention is not limited by these.

Example 1
Dinotefuran (100% by weight of phenol resin (manufactured by Sunbake Co., Ltd., Euroid PL-255), 9.4 parts by weight of flour, and 14.0 parts by weight of calcium carbonate dissolved in an appropriate solvent so as to have the concentrations shown in Table 1 ( In general formula (1), a compound in which 0.1 part by weight of R1 is a hydrogen atom, R2 is a methylamino group, X is a nitrogen atom, Y is a nitro group, and A is a tetrahydrofuran-3-yl group) Adhering to a radiusata pine veneer 30 cm in length 30 cm in width 30 cm in thickness and 1.8 mm in thickness so that the amount of drug added is the treatment amount shown in Table 1. The agent was applied to the adhesive layer to form a three-layer plywood. This was cold-pressed at 10 kg / cm ² for 60 minutes, allowed to stand for 30 minutes, and then hot-pressed at 9 kg / m ² and 128 ° C. for 4 minutes.
The prepared plywood was cut into a size of 3 cm in length and 3 cm in width. This plywood surface layer was treated with a chemical solution obtained by diluting Everwood Emulsion PC30W (manufactured by Sumika Enviro Science Co., Ltd., active ingredient permethrin 6%) with water 30 times to 110 g / m ² .

(Example 2)
A plywood was made from the preparation of the adhesive of Example 1 using imidacloprid as the insecticidal composition.

Example 3
In the preparation of the adhesive of Example 1, the insecticidal composition was clothianidin, and a chemical solution obtained by diluting Trebon emulsion (Mitsui Chemicals, Etofenprox 20%) 100 times with water on the plywood surface layer to 110 g / m ² was obtained. Processed.

(Comparative Example 1)
A plywood was made of fipronil as the insecticidal composition in the preparation of the adhesive of Example 1.

(Comparative Example 2)
In the preparation of the adhesive of Example 1, the insecticidal composition was changed to chlorfenapyr, and a chemical solution obtained by diluting Trebon emulsion (Mitsui Chemical Co., Ltd., Etofenprox 20%) 100 times with water on the plywood surface layer was 110 g / m ² . Was processed as follows.

(Comparative Examples 3 and 4)
The adhesive of Example 1 was prepared by using dinotefuran and imidacloprid as the insecticidal composition, and 110 g of a chemical solution obtained by diluting 100 times of water with a hydrated granule wettable powder (manufactured by Bayer Crop Science, 30% active ingredient thiacloprid) on the plywood surface layer. I was treated to be / ^{m 2.}

(Comparative Example 5)
In the preparation of the adhesive of Example 1, the insecticidal composition was clothianidin, and a chemical solution obtained by diluting Mospiran aqueous solvent (produced by Nippon Agricultural Chemicals Co., Ltd., active ingredient acetamiprid 20%) 100 times with water was treated to 110 g / m ^2. did.

(Comparative Examples 6-8)
The chemical | medical agent addition of the plywood surface layer was not performed to the plywood which mixed the chemical | medical agent in the adhesive agent of Examples 1-3.

(Comparative Examples 9-11)
In the preparation of the adhesive, on the plywood surface layer prepared without adding any chemicals, a chemical solution obtained by diluting Everwood Emulsion PC30W 30 times with water and Trebon emulsion (Mitsui Chemicals Co., Ltd., Etofenprox 20%) was added to the plywood surface layer. A chemical solution diluted 100 times with water was treated to 330 g / m ² . In addition, Comparative Example 11 was used in which no chemical treatment was applied to the surface.

(Test example: Wood ant protection test)
About the plywood created in Examples 1-3 and Comparative Examples 1-11, the ant-proof effect test was done. The test was carried out as follows with reference to the performance test method and performance standard (JIS K1571: 2004) of the wood preservative of Japanese Industrial Standard.

<Test insect>
Termite Copttermes formosanus SHIRAKI

<Weatherproof operation>
Put each piece of wood treated with chemicals into a beaker with a capacity of 500 ml, pour ion exchange water 10 times the volume of the piece of wood, and place an appropriate weight so that the piece of wood does not float up below the surface of the water. Sink into. Using a magnetic stirrer, the rotor is rotated from 400 to 450 per minute at a water temperature of 25 ± 3 ° C., stirred for 8 hours, and immediately drained off the surface layer of the test specimen. Then, it is left still in a circulating dryer at 60 ± 2 ° C. for 16 hours to volatilize volatile matter. The above operation was repeated 10 times alternately.
After the weathering operation was completed, drying was performed at a temperature of 60 ± 2 degrees for 48 hours.

<Test method>
One sample subjected to weathering operation was placed in a plastic container one by one, and 150 termite ants and 15 soldier ants were put on it, and left for 21 days. Thereafter, the wood pieces were dried at a temperature of 60 ± 2 ° C. for 48 hours, and then the degree of damage on the surface of the plywood was visually determined as shown in Table 2. The results are shown in Table 3.

The wood treatment method of the present invention is a chemical material that is used more than before by mixing an ant protection agent in the adhesive of a plywood or veneer laminate and further processing the ant inhibitor on the surface layer of the plywood or veneer laminate. Even if the amount is small, it is possible to obtain a sufficient ant protection effect.

Claims (3)

Using an adhesive mixed with an insecticidal composition having a solubility in water at 20 ° C of 100 mg / L or more, three or more layers of softwood veneer with a thickness of 1.8 mm or more were adhered, and further, water at 20 ° C. A termite ant ant in a starved state after a weathering operation on a plywood or veneer laminate that has been coated, sprayed or dipped with a wood preservative containing an insecticidal composition having a solubility of 100 mg / L or less Plywood or plywood laminate wood pest preservation, characterized in that the surface layer veneer will not be damaged by the termite group even after standing for 21 days in a plastic container containing 150 heads and 15 soldier ants Agent treatment method. The insecticidal composition having a solubility in water at 20 degrees according to claim 1 of 100 mg / L or more is represented by the general formula (1),
Or general formula (2)
(In the formula, A represents 6-chloro-3-pyridyl group, 2-chloro-5-thiazolyl group, tetrahydrofuran-2-yl group, tetrahydrofuran-3-yl group, 5-methyltetrahydrofuran-3-yl group, 3-pyridyl group. Group, 6-bromo-3-pyridyl group, 3-cyanophenyl group, 2-methyl-5-thiazolyl group, 2-phenyl-5-thiazolyl group or 2-bromo-5-thiazolyl group, R1 represents a hydrogen atom Represents a methyl group, an ethyl group, a formyl group or an acetyl group, and R2 represents a methyl group, an amino group, a methylamino group, an N, N-dimethylamino group, an ethylamino group, an N, N-diethylamino group, an N-methyl- N-ethylamino group, 1-pyrrolidinyl group, (6-chloro-3-pyridyl) methylamino group or N-methyl-N- (6-chloro-3-pyridyl) Represents a tilamino group, X represents a nitrogen atom or a CH group, Y represents a cyano group, a nitro group or a trifluoroacetyl group, Z represents an NH group or a sulfur atom, m is 0 or 1, n is 2 or And pest board or veneer laminated material for treating wood pests for wood pests. The wood preservative for wood pests of plywood or veneer laminate, wherein the insecticidal composition having a solubility in water at 20 degrees of 100 mg / L or less according to claim 1 or 2 is a pyrethroid compound Processing method.