JP3078813B2 - Wood pest control composition - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a composition for controlling wood pests.

[Related Art] The biggest factors of deterioration of wood used or used in buildings such as houses are, for example, food damage by wood pests such as termites and bark beetles and decay due to propagation of various fungi.

Conventionally, as a method for controlling the wood pests, a method of applying an oil agent or an emulsion containing a termite controlling agent or the like to the surface of the wood to be treated with a brush or the like, or treating these oil agents or the like with an appropriate sprayer is used. The method of spray coating on the surface of wood is mainly used.

However, oils and emulsions applied to these methods themselves contain a large amount of solvent,
For example, oils have the drawback that solvents such as kerosene and kerosene penetrate into the wood to be treated, forming stains on the surface, significantly reducing the value of the wood and contaminating the natural environment. When used, the wood itself is exposed to high humidity conditions during application, which may promote the generation of mold.

In addition, as a method for preventing fungi on wood, a method of applying an oil agent containing a preservative active ingredient, an emulsion, or the like has been proposed in substantially the same manner as described above, but such a method also has substantially the same disadvantages as described above. .

In any case, no special chemicals are currently known to prevent the deterioration of wood, and only wood pesticides and fungicides are applied separately to limited places. At present, a sufficient effect of preventing deterioration of wood cannot be expected.

[Problems to be Solved by the Invention] In view of the present situation, the present inventors have found that various types of wood that need to be prevented from deteriorating easily and without dangers such as contamination of the wood surface and fires due to ignition can be obtained. As a result of intensive studies for the purpose of providing a wood pest control agent composition capable of imparting a deterioration preventing effect, a control agent composition having a specific composition meets the above-mentioned purpose, and can prevent wood deterioration. This led to the completion of the present invention.

The present invention is permethrin [Means for Solving the Problems], phenothrin, fenvalerate, cypermethrin, rhino phenothrin, Dekamesurin, Puropokusa, 2,3,4,5-bis (delta ₂ - butylene) - tetrahydrofurfuryl, N, N -Diethyl-meta-toluamide, di-normal-propyl isosine comelonate, di-normal-butyl succinate and 2
A wood pesticidal composition characterized in that one or more wood pesticides selected from the group consisting of hydroxyethyloctyl sulfide are incorporated in an amount of 1.0 to 20 parts by weight with respect to 100 parts by weight of silicone. .

[Action and Examples] The wood pest controlling composition of the present invention is obtained by blending a wood pest controlling composition with silicone as described above.

The silicone used in the present invention is a component that retains a wood pest controlling component for a long period of time and exhibits an excellent sustained action.

Specific examples of the silicone include silicone oils represented by dimethylpolysiloxane and the like, silicone rubbers represented by room temperature-curable (RTV) liquid rubbers,
Silicone varnishes represented by straight silicone varnishes and modified silicone varnishes are exemplified. Among these silicones, room temperature-curable liquid silicone rubber is particularly preferable because it does not cause sagging when applied to wood and is easy to use.

As a typical example of the room temperature-curable silicone rubber, for example, 100 parts (parts by weight, hereinafter the same) of a diorganopolysiloxane (hereinafter referred to as a component (A)) whose molecular chain end is blocked with a hydroxyl group is 3 parts per molecule. 1 to 25 parts of a silane or siloxane having at least one hydrolyzable group (hereinafter, referred to as component (B)), and a filler (hereinafter, referred to as component (C)) 0 to
200 parts, especially 5 to 170 parts and curing catalyst (hereinafter, referred to as
An organopolysiloxane composition comprising from 0 to 5 parts (referred to as component (D)), preferably from 0.01 to 3 parts, is exemplified.

Examples of the component (A) include those conventionally used as a main raw material of a room temperature-curable silicone rubber.
The type of the organic group bonded to the silicon atom of the component (A) is not particularly limited, and specific examples of the organic group include:
For example, alkyl groups such as methyl group, ethyl group, propyl group and butyl group, cycloalkyl groups such as cyclopentyl group and cyclohexyl group, alkenyl groups such as vinyl group and allyl group, and aryl groups such as phenyl group, tolyl group and naphthyl group Aralkyl groups such as 2-phenylethyl group, alkoxy groups such as methoxy group and propoxy group, and groups in which part or all of the hydrogen atoms of these groups are substituted with halogen atoms such as chlorine atoms, amino groups, and the like. can give. The kinematic viscosity of the component (A) at 25 ° C is 10
It is desirably 0 to 1,000,000 cSt, preferably 1,000 to 5,000 cSt. When the kinematic viscosity of the component (A) is less than 100 cSt, it tends to be difficult to obtain a room-temperature-curable silicone rubber having excellent mechanical strength. The viscosity of the composition becomes too high, and as a result, the workability when applying such a composition on the surface of wood to form a room temperature-curable silicone rubber tends to decrease.

The component (B) is an essential component used to cure the composition, and a linear polysiloxane is a network cured product having three or more hydrolyzable groups bonded to a silicon atom in one molecule. Is needed to Specific examples of the hydrolyzable group include, for example, an acetoxy group,
Acyloxy groups such as octanoyloxy group and benzoyloxy group, ketoxime groups such as dimethylketoxime group, methylethylketoxime group and diethylketoxime group, alkoxy groups such as methoxy group, ethoxy group and propoxy group, isopropenyloxy group, 1 -Ethyl-2
-Alkenyloxy group such as methylvinyloxy group, dimethylamino group, diethylamino group, butylamino group,
Examples thereof include an amino group such as a cyclohexylamino group, and an aminoxy group such as a dimethylaminooxy group and a diethylaminoxy group. Of these, an alkoxy group and an alkenyloxy group are preferable from the viewpoint of corrosion resistance to metals.

As described above, the component (B) is not particularly limited except that it is essential to have three or more hydrolyzable groups, and a group other than the hydrolyzable group is further bonded to the silicon atom. The molecular structure may be either a silane or siloxane structure, and, in the case of a siloxane structure, may be any of linear, branched or cyclic.

Examples of the group bonded to a silicon atom other than the hydrolyzable group include an alkyl group such as a methyl group, an ethyl group, a propyl group and a butyl group; a cycloalkyl group such as a cyclopentyl group and a cyclohexyl group; a vinyl group and an allyl group Aryl groups such as phenyl, tolyl, and naphthyl groups; aralkyl groups such as 2-phenylethyl group; and groups in which some or all of the hydrogen atoms of these groups have been substituted with chlorine atoms. Can be Examples of groups other than the hydrolyzable group include, for example, CH ₃ Si (OCH ₃ ) ₃ , CH ₂ CHCHSi (OCH ₃ ) ₃ , And so on.

The component (B) is usually used alone or in combination of two or more.

When the amount of the component (B) is less than 1 part relative to 100 parts of the component (A), gelation tends to occur during the production or storage of the composition. Parts or more, particularly preferably 3 parts or more,
When the amount exceeds 25 parts, the shrinkage ratio of the composition at the time of curing becomes large, and the curing becomes extremely slow, and the elasticity of the obtained room temperature curable silicone rubber decreases.
It is 25 parts or less, particularly preferably 10 parts or less.

As the component (C), those usually used for room-temperature-curable silicone rubber can be used. Such (C)
Specific examples of the components include, for example, fumed silica, treated silica obtained by treating the surface of this silica with hexamethyldisilazane or cyclic dimethylsiloxane, precipitated silica,
Quartz, diatomaceous earth, titanium oxide, aluminum oxide, lead oxide, iron oxide, carbon black, bentonite, graphite, calcium carbonate, mica, clay, glass beads, glass micro balloon, shirasu balloon, glass fiber, polyvinyl chloride beads, polystyrene beads And acrylic beads. The particle size of the component (C) is preferably a 50-mesh pass, especially a 20-mesh pass, in order to easily apply the coating treatment to wood or the like.

If the amount of the component (C) exceeds 200 parts per 100 parts of the component (A), it is difficult to obtain a room-temperature-curable silicone rubber having a suitable rubber elasticity from the composition. Therefore, the content is desirably not more than 200 parts, preferably not more than 150 parts. When the amount is less than 5 parts, the effect obtained by blending the component (C) is not sufficiently exerted. Parts or more.

Examples of the component (D) include those conventionally used for room-temperature-curable silicone rubber. Specific examples of the component (D) include, for example, lead-2-ethyl octoate, dibutyltin dioctoate, dibutyltin diacetate, dibutyltin dilaurate, and butyltin-2.
-Ethylhexoate, iron-2-ethylhexoate,
Cobalt-2-ethylhexoate, manganese-2-ethylhexoate, zinc-2-ethylhexoate, stannous caprylate, tin naphthenate, tin oleate, tin butylate, titanium naphthenate, naphthene Metal salts of organic carboxylic acids such as zinc acid, cobalt naphthenate and zinc stearate; tetrabutyl titanate, tetra-2-ethylhexyl titanate, triethanolamine titanate;
Organic titanates such as tetra (isopropenyloxy) titanate; organic titanium compounds such as organosiloxytitanium and β-carbonyltitanium; alkoxyaluminum compounds, 3-aminopropyltriethoxysilane, N- (trimethoxysilylpropyl) ethylenediamine and the like Aminoalkyl group-substituted alkoxysilanes; amine compounds such as hexylamine and dodecylamine phosphate and salts thereof; quaternary ammonium salts such as benzyltriethylammonium acetate; lower alkali metals such as potassium acetate, sodium acetate and lithium oxalate Fatty acid salts; dialkylhydroxylamine such as dimethylhydroxylamine, diethylhydroxylamine, etc .; And formula: Examples thereof include guanidine compounds, guanidyl group-containing silanes and siloxanes, and these components are usually used alone or in combination of two or more.

When the amount of the component (D) is less than 0.01 part based on 100 parts of the component (A), it takes a long time to cure the composition, and the obtained room temperature curability. When the composition is formed on wood so that the thickness of the silicone rubber film is large, it tends to be difficult to cure uniformly to the deep part of the film.
Parts or more, preferably 0.1 parts or more. If the amount exceeds 5 parts, the curing time of the film formed using the composition becomes too short, and conversely the workability deteriorates. Parts or less, particularly preferably 1 part or less.

As wood pest control agents, various substances which are conventionally known to exhibit a controlling effect on wood pests such as termites and bark beetles, for example, pyrethroids, organochlorines, organophosphorus, pyrethrum, tobacco, etc. A systemic, boron-based, silicon-based, chlorophenyl-based, arsenic-based, chloronaphthalene-based, cyclobenzene-based, organic fluorine-based insecticide, and other usual insect repellents are used. Specific examples of such wood pest control agents include, for example, 3-allyl-2-methylcyclopenta-2-en-4-one-1-yl dl-cis / trans-chrysanthemate (generic name arelesrin: trade name pinamine ; Sumitomo Chemical Industries, Ltd.), 3-allyl-
2-Methylcyclopenta-2-en-4-one-1-yl d-cis / trans-chrysanthemate (trade name: Pinamine Forte; manufactured by Sumitomo Chemical Co., Ltd.), d-3-allyl-2- Methylcyclopenta-2-en-4-one-1
-Yl d-trans-chrysanthemate (trade name: Exulin; manufactured by Sumitomo Chemical Co., Ltd.), 3-allyl-2-methylcyclopenta-2-en-4-one-1-yl d-trans-chrysante Mart (generic name bioaresulin), N- (3,4,5,6-tetrahydrophthalimide) -methyl dl-cis / trans-chrysanthemate (generic name phthalthrine: trade name neopinamine or tetramethrin; Sumitomo Chemical Co., Ltd.) )), 5-benzyl-3-furylmethyl d-cis / trans-chrysanthemate (generic name resmethrin: trade name Chrislon Forte; manufactured by Sumitomo Chemical Co., Ltd.), 2-methyl-5- (2- Propagill)
-3-furylmethylchrysanthemate (generic name flamethrin), 3-phenoxybenzyl 2,2-dimethyl-3-
(2 ′, 2′-dichloro) vinylcyclopropanecarboxylate (generic name: permethrin: trade name Exmin: manufactured by Sumitomo Chemical Co., Ltd .; hereinafter, referred to as Exmin), 3-
Phenoxybenzyl d-cis / trans-chrysanthemate (generic name phenothrin: trade name Smithlin: manufactured by Sumitomo Chemical Co., Ltd .; hereinafter, referred to as Smithrin), α-cyano-3′-phenoxybenzyl α-isopropyl-4-
Chlorophenyl acetate (generic name fenvalerate:
Trade name: Sumicidin: manufactured by Sumitomo Chemical Co., Ltd .; hereinafter, referred to as sumicidin), (R, S) -α-cyano-3-phenoxybenzyl (1R, 1S) -cis / trans-3- (2,2
-Dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate (generic name cypermethrin, hereinafter referred to as cypermethrin), α-cyano-3-phenoxybenzyl d-cis / trans-chrysanthemate (generic name cyphenothrin, Cyphenothrin),
(S) -α-cyano-3-phenoxybenzyl (1R, cis) -3- (2,2-dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate (generic name decamesulin,
Hereinafter, referred to as decamesulin), 0,0-dimethyl 0- (2,2
-Dichloro) vinyl phosphate (generic name dichlorvos), 0,0-dimethyl 0- (3-methyl-4-nitrophenyl) thionophosphate (generic name fenitrothion), 0,0-diethyl 0-2-isopropyl-4 -Methyl-pyrimidyl-6-thiophosphate (generic name diazinon), 0,0-dimethyl S- (1,2-dicarbethoxyethyl) -dithiophosphate (generic name malathion), 0,0-diethyl 0- ( 3-oxo-2-phenyl-2H-pyridazin-6-yl) phosphorothioate (generic name pyridafenthion, hereinafter referred to as pyridafenthion), o-isopropoxyphenylmethylcarbamate (generic name propoxer, hereinafter referred to as bigon), 0 -(4-bromo-2,5-dichlorophenyl) 0.0
- dimethyl phosphorothioate (common name Buromofosu), 2,3,4,5-bis (delta ₂ - butylene) - tetrahydrofurfuryl (trade name Reppa 111: Yoshitomi Pharmaceutical Industries, Ltd.
Manufacture: hereinafter referred to as Lepper 111), N, N-diethyl-meta-toluamide (hereinafter referred to as Diet), di-normal-propylisocincomeronate (trade name Lepper 333:
Yoshitomi Pharmaceutical Co., Ltd .; hereinafter referred to as Lepper 333)
Normal-butyl succinate (hereinafter referred to as DNBS),
2-hydroxyethyl octyl sulfide (hereinafter, referred to as
Sulfide), 5-chloro-4-amino-2,6
Pyrimidine derivatives such as -dimethylpyrimidine; piperidine derivatives such as 1-hexanoyl-piperidine and 1-pentanoyl-2,6-dimethyl-piperidine; xanthogenic acid derivatives such as 0-ethyl-S-tert-butyl-sulfenylxanthate Azepine derivatives such as, 1-pentanoylhexahydro-1H-azepine, 1
-Hexanoyl 3-pipecholine, 1-hexanoyl 2-
Pipecoline derivatives such as pipecoline; morpholine derivatives such as 4-hexanoyl-2,6-dimethylmorpholine; pyrrolidine derivatives such as 1-octanoylpyrrolidine; quinones such as naphthoquinone and benzoquinone;
And dihydric alcohols such as butyl-2-ethyl-1,3-propanediol, 2-ethyl-1,3-hexanediol, and butoxy polypropylene glycol. Among these wood pest control agents, Exmin (permethrin), Smithrin (phenothrin), Smithicidin (fenvalerate), cypermethrin, cyphenothrin, decamesulin, bigon (propoxer), lepper 111 (2,3,4) , 5-bis (Δ
₂ -butylene) -tetrahydrofurfural), diet (N, N-diethyl-meta-toluamide), Lepper 333
(Di-normal-propylisocin comelonate), DN
BS (di-n-butyl succinate) and sulfide (2-hydroxyethyloctyl sulfide) not only have an excellent effect on termites, but also have excellent stability against light and water. These wood pest control agents can be used alone or in combination of two or more.

The amount of the wood insecticide used is the silicone 100
1 part or more relative to the part, and if it exceeds 20 parts, the mechanical strength of the coating tends to decrease.
It is preferably at most 10 parts, particularly preferably at most 5 parts.

It is preferable that the wood pest control agent is usually kneaded and contained together with such a silicone raw material when preparing silicone. In the case where the wood pesticide component is kneaded and contained in the silicone raw material as described above, the wood pesticide composition is gradually added when the film of the wood pesticide composition is formed on the wood surface. It is particularly preferable because it is released from the coating and the pest control effect is maintained for a long time. Further, as described below, the wood pest controlling composition of the present invention can be used by dissolving it in an organic solvent.

In addition, when the wood pest controlling composition of the present invention is used for wood requiring decay resistance, the composition contains a preservative.

As such a preservative, any one can be used as long as it is conventionally used. Specific examples of the preservative include, for example, 2,4,4'-trichloro-
2'-hydroxydiphenyl ether (Irgasan DP
300, manufactured by Ciba Geigy, hereinafter referred to as Irgasan DP300), 2,3,5,6-tetrachloro-4 (methylsulfonyl) pyridine (Daucil S-13, manufactured by Dow Chemical Company),
4-chlorophenyl-3'-iodopropargyl formal (IF-1000, manufactured by Nagase & Co., Ltd .; hereinafter, referred to as IF-1000); alkylbenzyldimethylammonium chloride (benzalkonium chloride; Nikko Chemicals Co., Ltd.)
Benzyldimethyl} 2- [2- (p-1,1,3,3-
Tetramethylbutylphenoxy) ethoxy] ethyl} ammonium chloride (benzethonium chloride, manufactured by Sankyo Co., Ltd.), 4-isopropyltropolone (hinokitiol, manufactured by Takasago International Corporation, hereinafter referred to as hinokitiol), N, N-dimethyl-N - phenyl -N '- (fluorodichloromethylthio) sulfonamide (Preventol toll A _4, manufactured by Bayer), 2- (4'-thiazolyl)
Benzimidazole (TBZ, manufactured by Hokko Chemical Co., Ltd .; hereinafter, T
As BZ), N-(fluorodichloromethylthio) - phthalimide (Preventol toll A _3, Bayer, hereinafter referred to as prevention tall A _3), 6- acetoxy-2,4
-Dimethyl-m-dioxin (dioxin, manufactured by Dibordan), tributyl phosphate (hereinafter, referred to as TBP), zinc ethylenebis (dithiocarbamate) (Zineb, manufactured by Rohm and Haas), manganese ethylenebis (dithiocarbamate) ( Manneb, manufactured by Rohm and Haas), zinc-manneb complex complex (Manzeb, manufactured by Rohm and Haas), bis (dimethyldithiocarbamic acid), ethylenebis (dithiocarbamic acid) dizinc (polycarbamate, Tokyo Organic Chemical Industry Co., Ltd.) )), Bis (dimethylthiocarbamoyl) disulfide (thiram, manufactured by Rohm and Haas), 2,6-dinitro-4 crotonic acid
-Octylphenyl reaction isomer mixture (DPC, manufactured by Rohm and Haas), N-trichloromethylthiotetrahydrophthalimide (Captan, manufactured by Sankyo Co., Ltd.,
Captan), 2,3-dicyano-1,4-dithiaanthraquinone (dicyanone, manufactured by Merck), 2,4-dichloro-6- (o-chloroanilino) -S-triazine (triazine, Fuji Chemical Co., Ltd. )), Sn-butyl S '
-P-tert-butylbenzyl N-3-pyridyldithiocarbonimidate (Denmart, manufactured by Sumitomo Chemical Co., Ltd.), N- (3 ', 5'-dichlorophenyl) -1,
2-dimethylchloropropanedicarboximide (Sumilex), bis (chlorophenyl) trichloroethanol (Kelcene), 6-methylquinoxaline-2,3-dithiocarbonate (Molestan), tetrachloroisophthalonitrile (Daconiyl), methyl-1- (Butylcarbamoyl) -2-benzimidazole carbamate,
Examples include blasticidin S-benzylaminobenzenesulfonate, streptomycin hydrochloride, kasugamycin hydrochloride, cycloheximide and the like. These preservatives may be used alone or as a mixture of two or more.

The amount of the preservative to be used is 10% or less (% by weight, the same applies hereinafter), preferably 1 to 5%, based on the wood pest controlling composition of the present invention.

In addition, the wood pest controlling composition of the present invention can be used by dissolving and dissolving an organic solvent, if necessary, as described above. The use of an organic solvent is preferred since the penetration and adhesion of the wood pest control agent and preservative to wood are improved, and the effect of suppressing the deterioration of wood is more sufficiently exhibited.

The organic solvent mainly has miscibility and affinity with the wood pesticide composition of the present invention, and also has a low malodor, and adheres the wood pesticide composition of the present invention to wood by spray coating. In that case, do not hinder the spray characteristics,
It is used in consideration of having appropriate volatility.
Specific examples of the organic solvent, for example, hexane, 3,
Petroleum solvents such as 3,4-trimethylnonane, cyclohexane, kerosene (kerosene), naphtha, n-paraffin, and isoparaffin; chlorinated hydrocarbons such as dichloroethane and trichloroethane; and the like. These organic solvents are usually used alone or A mixture of two or more types is used.

The amount of the organic solvent used is preferably 45% or less with respect to the wood pest controlling composition of the present invention from the viewpoint of the penetration of the chemical into the wood, and more preferably about 5 to 20%. is there.

In addition, the wood pest controlling composition of the present invention may optionally further contain various additives such as a potency enhancer, a volatilization rate improver, a deodorant, and a fragrance which are usually used as necessary. it can.

Examples of the potency enhancer include piperonyl butoxide, N-propylisosome, MGK-264, sinepiline 222, sinepiline 500, Risen 384, IBTA, and S-421.
And so on.

Examples of the volatilization rate improver include phenethyl isocyanate and dimethyl hymixate.

Examples of the deodorant include lauric acid methacrylate (LMA).

Examples of the fragrance include citral, citronellal, and neutral doll.

Further, the wood pest controlling composition of the present invention may further contain, if necessary, a predetermined amount of a plasticizer such as a non-reactive silicone oil, a coloring agent such as a pigment, a bactericidal agent, and an antibacterial agent. May be blended in a range that does not inhibit the above.

The wood pest controlling composition of the present invention thus obtained,
It may be applied to the wood as it is using a brush or the like, or it may be formed into a sheet shape, for example, and an adhesive layer may be provided on one side thereof so that it can be adhered. When an organic solvent is used, the wood pesticide composition of the present invention can be applied to wood up to about 200 g / m ² by spray coating.

Next, the wood pest controlling composition of the present invention will be described in detail based on examples, but the present invention is not limited to these examples.

Reference Example 1 and Comparative Example 1 To 100 parts of α, ω-dihydroxydimethylpolysiloxane (component (A)) having a viscosity of 1,500 cSt, 50 parts of fumed silica (component (C)) were added and heated at 150 ° C. for 2 hours. The base compound (1) was mixed by mixing.

Then the formula for 100 parts of this base compound (1): 6 parts of the component (B) represented by the formula, 0.7 part of the component (D) represented by the formula: ((CH ₃ ) ₂ N) ₂ C = NC ₃ H ₆ Si (OCH ₃ ) ₃ , and a wood pest control agent (permethrin) Add 0.5 part and uniformly mix to produce composition (1). For comparison, composition (2) is prepared in the same manner as above except that the wood pesticide (permethrin) is not added. Was.

Next, the compositions (1) and (2) were applied to red pine (3 × 3 × 5 cm) so as to have a thickness of about 1 mm, respectively, and allowed to stand at 20 ° C. × 55% RH for 24 hours. Cured,
Next, the composition was formed into a sheet having a thickness of 2 mm,
After curing for 7 days at 55% RH with JIS-K-6
When the physical properties of rubber were examined according to 301, the hardness (JIS-
A) 25, tensile strength 26 kg · f / cm ² , elongation 35%.

Examples 1-4 and Comparative Examples 2 and 3 Fumed silica ((C)) obtained by subjecting 100 parts of α, ω-dihydroxydimethylpolysiloxane (component (A)) having a viscosity of 20,000 cSt to a surface treatment with dimethyldichlorosilane. Ingredients) Add 15 parts, knead and mix base compound (2)
Was made.

Then, the components (B), (D) and the wood pesticide in the amounts shown in Table 1 were added to 100 parts of the base compound (2), and the mixture was uniformly mixed to obtain a composition.

In Table 1, B1 is the formula: Wherein B2 is of the formula: And D1 is a compound represented by the formula: [(CH ₃ ) ₂ N] ₂ C = NC ₃ H ₆ Si (OCH ₃ ) ₃ , and D2 is dibutyltin diacetate.

Next, as the physical properties of the obtained composition, the degree of damage to the food and the total number of solids of termites and the state thereof were examined in accordance with the following methods. Table 2 shows the results.

(Degree of damage and extinction of total solids of termites and their state) Sand containing water was placed in a glass petri dish (diameter 9 cm, height 27 cm), and the sand was subjected to Examples 1-4 or Comparative Example 2 or The composition obtained in 3 was evenly applied so as to have a basis weight of 200 g / m ^2, and then red pine sapwood (3 ×
After embedding about 2/3 of 3 × 5cm) and leaving it all day and night, release the termites (about 500-1000 individuals), close the glass petri dish with a plastic lid with several holes,
Left for 30 days.

Next, the extent of damage to the treated material, the total population extinction of termites, and their state were examined.

The evaluation criteria for the degree of damage in the table are as follows.

(Evaluation criteria) ◎: No damage ○: Minor damage △: Slight damage ×: Large damage [Effects of the Invention] The wood pest controlling composition of the present invention has a low flammability, so there is no danger of fire, etc., and it has an extremely excellent controlling activity against wood pests and a long term controlling activity. It has effects such as persistence.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yosaburo Utsumi 507-2 Nagahara, Matsushige-cho, Itano-gun, Tokushima Prefecture (72) Inventor Masatoshi Arai 2-3-1 Isobe Isobe, Annaka-shi, Gunma Prefecture Inside Electronic Materials Research Laboratory (72) Inventor Tetsuya Mayuzumi 2-6-1 Otemachi, Chiyoda-ku, Tokyo Shin-Etsu Chemical Co., Ltd. (56) References JP-A-56-4408 (JP, A) JP-A Sho JP-A-57-43803 (JP, A) JP-B-61-17643 (JP, B2) JP-B-62-36481 (JP, B2) JP-B-58-35482 (JP, A) B2) (58) Field surveyed (Int. Cl. ⁷ , DB name) B27K 3/00

Claims (3)

(57) [Claims] 1. A permethrin, phenothrin, fenvalerate, cypermethrin, rhino phenothrin, Dekamesurin, Puropokusa, 2,3,4,5-bis (delta ₂ - butylene) - tetrahydrofurfuryl, N, N-diethyl - meta - toluamide, Di-normal-propyl isosine comeronate, di-normal-butyl succinate and 2
-A wood pesticidal composition characterized in that one or more wood pesticides selected from the group consisting of hydroxyethyloctyl sulfide are mixed in an amount of 1.0 to 20 parts by weight with respect to 100 parts by weight of silicone. 2. The silicone according to claim 1, wherein the silicone contains 100 parts by weight of a diorganopolysiloxane having hydroxyl groups at both ends of the molecular chain and 1 to 25 parts by weight of a silane or siloxane having at least three hydrolyzable groups in one molecule. Item 6. A wood pest controlling composition according to Item 1. 3. The composition of claim 1, further comprising a preservative.