JPH0830001B2 - Pasty wood antiseptic insecticide - Google Patents

Description

TECHNICAL FIELD The present invention relates to a wood preservative and insect repellent having a paste form and excellent permeability.

[Conventional technology]

Wood used for construction such as residential structures is deteriorated by microorganisms such as wood-rotting fungi and mold, or termites,
Damaged by pests such as bark beetles. For this reason, various anti-deterioration agents are used in the form of preparations such as oils and emulsions.In addition to this, paste preparations have been developed as preparations with excellent penetrability as described in JP-A-54-49303. It is used to prevent damage from wood pests such as termites.

[Problems to be solved by the invention]

However, wood insect repellents described in JP-A-54-49303 are effective as insect repellents for beetle beetles because of their excellent permeability to wood, adhesion, and workability during application. It has the drawback that it does not contain the preservatives that are indispensable for use in house pests such as termites and bark beetles, and that the proportion of surfactant used is too large.

[Means for solving problems]

The present inventor, as a result of repeated research on a pasty wood preservative insecticide effective for house pests, particularly termites and bark beetles, found a surfactant that produces a sufficient paste-like emulsion in a small amount, and a wood preservative ingredient , Wood insect repellent,
The present invention was completed by adding water and a solvent to form a paste.

That is, the surfactant used for the paste emulsion should be at least sufficient to disperse the oil droplets in water, but it is desirable to use a surfactant as small as possible to achieve a sufficient emulsifying effect. This is because the paste agent gradually breaks down the emulsification after it adheres to the wood, and the active ingredient gradually permeates and diffuses into the wood, but some of the surfactant remains on the wood surface without completely penetrating inside. Becomes Therefore, when water is applied to the surface, it is re-emulsified, water easily penetrates into the wood, and a sufficient antiseptic effect cannot be expected.

The present invention is based on a total of 100 parts by weight of water and a hydrocarbon solvent, 0.2 to 1 part by weight of a surfactant which is a polyoxyethylene alkylphenyl ether having an HLB of 13 or more, and 0.1 parts by weight of an antiseptic component.
It is a paste-like wood preservative and insect repellent composition comprising -15 parts by weight and 0.1-10 parts by weight of an insect repellent component.

The hydrocarbon solvent used in the present invention is capable of dissolving the antiseptic component and the insect repellent component and producing a uniform emulsion, and examples thereof include fats such as white kerosene, n-paraffin and isoparaffin. Group hydrocarbons, Hisol,
Aromatic and naphthenic hydrocarbons such as shell-sol and pegazole can be mentioned.

These solvents may be used alone or in an appropriate mixture.

As the surfactant used in the present invention, a polyoxyethylene alkylphenyl ether having an HLB of 13 or more is preferable, as it can form a sufficient paste emulsion with a small amount.
Examples of such compounds include polyoxyethylene nonyl phenyl ether (EO 9 mol), the same (EO 12 mol), the same (EO 16 mol), the same (EO 20 mol), polyoxyethylene octyl phenyl ether (EO 10 mol), the same (EO 20 mol). Mol), polyoxyethylene dodecyl phenyl ether (EO12 mol), the same (EO20 mol) and the like. The mixing ratio is the sum of water and hydrocarbon solvent.
At least 0.2 parts by weight or more is required for 100 parts by weight, but addition of an amount exceeding 1 part by weight cannot be expected to improve performance, and 0.3 to 0.7 parts by weight is particularly desirable. Further, a more stable emulsified product can be obtained by combining two or more of the above surfactants.

The antiseptic component used in the present invention is an oil-soluble antiseptic agent that is generally used for wood preservatives, and examples of such a compound include diiodomethyl-P-
Trilysulfone (Amical 48), 4-chlorophenyl-
3-Iodopropargyl formal (IF-1000), 3
-Bromo-2,3-diiodo-2-propenylethyl carbonate (Samplus) and other organic iodine compounds, 2,4,6
-Organobromo compounds such as tribromophenol (TBP) and 4-bromo-2,5-dichlorophenol (Versider), 2,4,5-trichlorophenol (2,4,5-TCP), 2,
Organochlorine compounds such as 4,6-trichlorophenol (2,4,6-TCP), aluminum salts of N-nitrosochlorhexylhydroxylamine (xilligen A1), copper naphthenate,
Examples thereof include organic metal compounds such as zinc naphthenate. As the proportion to be mixed, with respect to 100 parts by weight of the total of water and the hydrocarbon solvent, at least 0.1 parts by weight or more is necessary to obtain the antiseptic effect, but if the amount of the antiseptic component used is too large, Since the stability deteriorates, it is desirable to use 0.1 to 15 parts by weight, preferably 0.5 to 10 parts by weight, depending on the antiseptic effect of each compound.

Insect repellent components used in the present invention include termites,
It shows an insecticidal effect against house pests such as bark beetles,
Examples of such compounds include 0,0-diethyl-
(3,5,6-Trichloro-2-pyridyl) phosphorothioate (chlorpyrifos), 0,0-diethyl- (phenylgluoxilonitrile oxime) phosphorothioate (foxime), 2-chloro-1- (2,4,5- Trichlorophenyl) -vinyl dimethyl phosphate (Gardner), 0,0-diethyl-0- (3-oxo-2-phenyl-2H-pyridazin-6-yl) phosphorothioate (pyridafenthione), 0-isopropoxycarbonyl-1-methyl Vinyl-0-methylethylphosphoramidothioate (propetamphos), 0-ethyl, S-propyl, 0-2,4-dichlorophenylphosphorodithioate (prothiophos), 0.0-dimethyl-0- (3-methyl Organophosphorus compounds such as -4-nitrophenyl) -thionophosphate (fenitrothion), 3 Phenoxybenzyl d1-cis / trans-3- (2,2-dichlorovinyl) 2,2-dimethyl-1-cyclopropanecarboxylate (permethrin), α-cyano-3-phenoxybenzyl-2- (4-chlorophenyl) Examples thereof include pyrethroid compounds such as isovalerate (sumicidin) and α-cyano-3-phenoxybenzyl-cis / trans-chrysanthemate (phenothrin).

The ratio to be mixed is 10 in total of water and hydrocarbon solvent.
0 parts by weight, to obtain an insect repellent effect, at least 0.1
It is necessary to use more than 1 part by weight, but if the amount of the insect repellent component used is too large, the stability of the emulsified product deteriorates, so 0.1 to 10 parts by weight, preferably 0.5 to 5 parts by weight is desirable depending on the insect repellent effect of each compound. .

Furthermore, the stability of the paste-like emulsion can be improved by adding starch, carboxymethyl cellulose, benzalized sorbit and the like to the antiseptic and insecticide of the present invention. In addition to these, fragrances, rust preventives, coloring agents, etc. can be added, but they are not particularly necessary components in terms of performance as a paste.

The pasty wood preservative insecticide obtained by the present invention,
It can be applied by brush, roller coat, or the like, or can be sprayed using a hand sprayer or an electric spray device.

Hereinafter, the present invention will be described in detail with reference to specific examples, but the present invention is not limited to these examples.

 Parts indicate parts by weight.

〔Example〕

Formulation, Production Example 1 (Formulation) (A) Antiseptic component: 4-chlorophenyl-3-iodopropargylformal (IF-1000, trade name of Nagase & Co., Ltd.) 1 part (B) Insecticidal component: 0,0-diethyl-0 -(3-methyl-
4-nitrophenylthio) phosphate (Sumithion,
Sumitomo Chemical Co., Ltd. product name) 2 parts (C) Surfactant: polyoxyethylene octyl phenyl ether (EO10 mol) (Octapol 100, Sanyo Chemical Co., Ltd. product name, HLB13.6) 0.4 parts (D) Interface Activator: polyoxyethylene dodecyl phenyl ether (EO 20 mol) (dodecanol, trade name by Sanyo Chemical Industries, HLB 15.4 parts) 0.2 parts (E) polar solvent: water 20 parts (F) hydrocarbon solvent: xylene 5 Parts (G) Hydrocarbon solvent: White kerosene 71.4 parts (total 100 parts) (Production method) (C) and (D) were dissolved in (E) to prepare a water component liquid. By vigorously stirring this solution, an oil component solution prepared by dissolving (A) and (B) into (F) and (G) was gradually added to obtain a paste-like viscous emulsion. A wood preservative and insect repellent of the present invention was obtained.

This wood preservative and insect repellent was stable without separation of water and oil and other changes even after left standing for 3 months at room temperature in a sealed state.

Formulation / Production Example 2. (Formulation) (A) Antiseptic component: zinc naphthenate (10% as zinc) (B) Insecticidal component: 0,0-diethyl- (3,5,6-trichloro-2-pyridyl) phosphorothioate (Rent Lec,
Dow Chemical Co., Ltd. product name) 1 part (C) Surfactant: polyoxyethylene nonyl phenyl ether (EO 10 mol) (Nonipol 100, Sanyo Chemical Industries trade name, HLB13.3) 0.4 part (D) Polar solvent: water 25 parts (E) Hydrocarbon-based solvent: odorless kerosene pegazole (trade name, manufactured by Mobil) 63.5 parts (F) Thickener: carboxymethyl cellulose 0.1 part (total 100 parts) (production method) (C) and (F) ( A water component solution was prepared by dissolving in D). Separately, (A) and (B) are dissolved in (E), and then the mixture is stirred, and then rapidly stirred to obtain a wood preservative insecticide of the present invention which is a paste-like viscous emulsion. It was

This wood preservative and insect repellent was stable without separation of water and oil and other changes even after being left in a sealed state at room temperature for 3 months.

Formulation / Production Example 3. (The preservative component and the surfactant were changed for Formulation / Production Example 2) (Formulation) (A) Preservative component: The same as in Production Example 2 20 parts (B) Insect repellent component: Formulation Same as Production Example 1 (C) Surfactant: Polyoxyethylene nonylphenyl ether (EO6 mol) (Nonipol 60, Sanyo Chemical Co., Ltd. trade name, HLB10.9) 3 parts (D) Polar solvent: compounding / Same as Production Example 2 25 parts (E) Hydrocarbon-based solvent: Formulation-Same as Production Example 2 50.9 parts (F) Thickener: Formulation-Same as Production Example 2 0.1 parts (total 100 parts) (Production method) According to Production Example 2, a wood preservative and insecticide of the present invention, which was a paste-like viscous emulsion, was obtained.

However, this wood insect repellent was inferior in stability over time, and when left in a sealed state at room temperature, water and oil were separated after 7 days.

Test Example 1. Antiseptic Efficacy Test For Formulation Examples 1 to 3, the antiseptic efficacy test was performed based on JTCAS-No. 2 as the test method defined by the Japan Shirogari Countermeasures Association.

In this test, a test piece treated with a chemical (100 g / m ² ) was subjected to a weathering operation in which wetting and volatilization were repeated 10 times, and the weight loss rate after 8 weeks due to deterioration of the test bacteria was measured to determine the antiseptic efficacy value. Expressed as Pass 80 or more.

 The results are as shown in Tables 1 to 3.

From the above results, the preservative efficacy of the formulation example 1.2., The preservative efficacy value even at a 1/2 dilution concentration is 80 or more, the undiluted solution shows a high value of 90 or more, coating, spraying, of the wood preservative for dipping All met the performance criteria. However, in the formulation example 3, the preservative efficacy was lowered especially under the weathering operation even though the content of the preservative was high. This is considered to be due to the amount of emulsifier used.

Test Example 2. Ant-term efficacy test Regarding Formulation Example 1, the test method established by the Japan White-belt Countermeasures Association was performed according to JTCAS-No.

In this test, a test piece treated with a chemical agent (110 g / m ² ) is subjected to a weathering operation in which wetting and volatilization are repeated 10 times, and the weight reduction rate after 21 days due to a marginal feeding damage is measured and used as the termite control efficacy. Pass 3% or less.

 The results are as shown in Tables 4-5.

From the above results, the termite control efficacy of Formulation Example 1.2 was 3% or less in weight reduction rate regardless of the presence or absence of the weathering operation, and it complied with the performance standard of the wood termite control agent.

〔The invention's effect〕

As described above, the wood preservative and insecticide according to the present invention is obtained as a stable paste-like emulsified product with a small amount of a surfactant used,
It can be effectively used for controlling house pests such as termites and bark beetles.

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Claims (3)

[Claims] 1. A total of 100 parts by weight of water and a hydrocarbon solvent, 0.2 to 1 part by weight of a surfactant which is a polyoxyethylene alkylphenyl ether having an HLB of 13 or more, and 0.1 parts by weight of an antiseptic component.
A paste-like wood preservative and insect repellent which comprises -15 parts by weight and 0.1-10 parts by weight of insect repellent. 2. An organic iodine compound selected from the group consisting of diiodomethyl-P-tolylsulfone, 4-chlorophenyl-3-iodopropargylformal and 3-bromo-2,3-diiodo-2-propenylethylcarbonate as an antiseptic component, 2,4,6-tribromophenol, 4-bromo-2,5
An organic bromo compound selected from dichlorophenol,
At least one of organochlorine compounds selected from 2,4,5-trichlorophenol and 2,4,6-trichlorophenol, aluminum salts of N-nitrosocyclohexylhydroxyamine, copper naphthenates, and organometallic compounds selected from zinc naphthenates. The wood preservative and insect repellent according to claim 1, which is a seed. 3. The insect repellent component is 0,0-diethyl- (3,5,6-trichloro-2-pyridyl) phosphorothioate, 0,0-
Diethyl- (phenylgluoxilonitrile oxime)
Phosphorothioate, 2-chloro-1 (2,4,5-trichlorophenyl) -vinyldimethylphosphate, 0,0-
Diethyl-0- (3-oxo-2-phenyl-2H-pyridazin-6-yl) phosphorothioate, 0-isopropoxycarbonyl-1-methylvinyl-0-methylethylphosphoramidothioate, 0-ethyl, S- Organophosphorus compound selected from propyl, 0-2,4-dichlorophenyl phosphorodithioate, and 0,0-dimethyl-0- (3-methyl-4-nitrophenyl) thionophosphate, 3-phenoxybenzyl d1-cis / Transformer-3-
(2,2-Dichlorovinyl) 2,2-dimethyl-1-cyclopropanecarboxylate, α-cyano-3-phenoxybenzyl-2- (4-chlorophenyl) isovalerate, α-cyano-3-phenoxybenzyl-cis / The wood preservative and insect repellent according to claim 1, which is at least one kind of pyrethroid compound selected from transxosantemate.