JPS61238705A - Repulsion for white ant - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Termites are well-known and hated pests due to their insatiable appetite for materials such as wood or wood products. Due to their appetite for these materials, termites directly contribute to the destruction of man-made wooden structures, such as buildings, foundations, ledges, etc. To get rid of termites,
Earth destruction and/or a building material contains pentachlorophenol,
It has been treated with substances such as aldrin, chlordane, cyeldrin, hegtachlor, some arsenic compounds, and creosote. However, these substances have high toxicity and are notorious environmental pollutants, so there is a need for chemical alternatives that are less toxic and less environmentally destructive. It is therefore very clear that there is a need for a means of mitigating and/or preventing termite attack on these materials, which provides long-term control and at the same time has low acute toxicity to animals.

The present invention is directed to a method for preventing and/or mitigating termite attack on wood and wood products, which method comprises replacing the material with 2- and/or 4-
contacting an effective amount of a quaternary ammonium salt of a viridinol compound.

In summary, according to the invention, a cellulosic material can be prepared according to the following formula: where -OA is present in the 2- or 4-position; A is a quaternary ammonium moiety; termites by contacting them with an effective amount of one or more active compounds (chlorine, fluorine, bromine, or heptiodine; and n = 0.1, 2.3, or 4). be exterminated. Optionally one or two lower alkyl groups, such as methyl, ethyl, globyl or butyl groups, can be present on the pyridine nucleus.

More specifically, A is of the formula It may be a quaternary ammonium component represented by ), which can be hydroxyl groups.

In this specification, the term "alkyl" is meant to include straight chain and branched chain alkyl.

For convenience, the compounds of this invention are referred to herein as active compounds. The active compounds are applied to wood, which is food for termites, and wood products, including paper and paper products, in an amount effective to reduce and/or prevent termite attacks on these materials.

Of particular interest in the practice of this invention is the use of the quaternary ammonium salt of 3.5.6-)dichloro-2-ricinol as the active compound to produce materials such as wood, wood products, paper, and paper products. This is a method of exterminating termites by applying it. The application of active compounds to said material
This can be accomplished by immersing the material in a composition containing the active compound, spraying or coating the material with the composition.

The term "termite control" or its variants is used to describe the activity of the active compounds of the formula in reducing and/or preventing termite attack on treated materials.

The specific mechanism by which the active compounds reduce and/or prevent termite attack on materials such as wood, wood products, paper and paper products is not known. However, it appears that the active compounds somehow make these materials repellent to termites.

Although the active compounds of this invention useful for controlling termites may be applied in unmodified form, they are preferably combined with inert auxiliaries or carriers to aid in dispersing the active compounds during processing of the material. is applied in the form of a liquid or finely divided solid composition containing the termites, thereby achieving final contact with the termites and, as a result, termite control.

Additionally, the treatment of the present invention reduces and/or prevents wood decay. Suitable carriers include water, alcohol,
Included are glycols, kerosene, other petroleum distillates, and aromatic solvents, or any convenient combinations thereof, or other suitable carrier systems or solvents. The active compounds can also be dispersed as finely divided solids for application to cellulosic materials and used as dusts. The active compounds can furthermore be adsorbed onto solid carrier clays for application to materials and can be used as granules.

These solid compositions can further be dispersed in water, optionally using surfactants, and the resulting aqueous suspension applied to the material (by dipping or spraying).

The emulsifiable concentrates described above can be prepared using standard, well-known formulation techniques. For example, the active compound is mixed with a petroleum distillate, such as xylene; an organic solvent, such as dimethylformamide (DMF); and an emulsifier (surfactant) to form an emulsifiable concentrate. This concentrate produces an emulsion suitable for application to wood or wood products after dilution with water.

The active compounds are preferably applied to materials that are subject to attack by termites. The most common applications are to wood, wood products, paper, and paper products; the preferred material is wood. When treating wood, the active ingredient is usually applied to the material as an oil formulation containing an organic solvent as carrier. Suitable organic solvents include kerosene, xylene, toluene and other petroleum distillates. Other organic solvents such as mσ can be added to the oil formulation. Preferred oil formulations contain, for example, 1 to 2 parts by weight of active compound, 95 to 97 parts by weight.
Contains a heavy part of kerosene and 2 to 3 parts by weight of DMF.

In such applications to wood, the active compounds in the oil formulation can be applied according to known methods (by brushing, dipping, spraying, etc.). Usually the concentration of active compound in oil formulations is between 0.00OOi and 10.0% by weight, and preferably between 0.1 and 2.0% by weight. The oil formulation is applied to the wood in an amount sufficient to wet the entire surface of the wood. As an alternative to this method, the active compound can be applied to the wood by pressure treatment, thereby allowing the active compound to penetrate deeply into the wood.

In one embodiment of the invention, 3,5,6-dolichloro-2-viridinol or an acceptable salt thereof is applied in the form of an oil formulation onto wood to control termites. In this embodiment, termite damage to the treated wood is prevented.

The exact amount of active compound to be used when treating the materials described above is not critical, so long as an amount effective to kill termites is retained by the treated material. The actual amount of active ingredient retained in a material such as wood depends on various factors, such as the type of wood, surface area, moisture content of the wood, density, and processing methods. Optimal amounts for individual applications can be readily determined by those skilled in the art using standard ratio potency experiments.

The following examples provide a detailed illustration of the invention, but are not intended to limit the scope of the invention.

Example 1, 2-Viridinol: 3.5.6-Dolichlor59.
5 g (0.3 mol) of recrystallized 3,5°6-dolichloro-2-viridinol were suspended in 200 g of water,
Then excess ammonium hydroxide (100g) was added. The suspension was heated to 50°C to 60°C, treated and
The liquid was cooled in a water bath. The resulting crystals were harvested and air dried.

Melting point: 208°C to 209°C decomposition. Yield: 53.6g.

Preparation 3.5.22 g (0.1 mol) of the sodium salt of 6-dolichloro-2-pyridinol were dissolved in t-hot isoglobil alcohol and 69 g of trimethyloctadecyl ammonium chloride were added.

The mixture was heated on a steam bath and slurried. A fine white precipitate of sodium chloride formed and was filtered off. Part F was concentrated on a steam bath to a thick syrup, which was dissolved in methylene chloride and filtered. Part F was evaporated on a steam bath and then on a rotary evaporator (bath temperature 95°C) at 10 Hg (absolute pressure). The product (49g) was a white paste.

50-3.5.6-)dichloro- in diethyl ether
Solution of 2-Viridinol (50 g - 0,025 mol)'
t-,50-jetanolamine in diethyl ether
(2,65 g - 0,025 mol). A solid separated rapidly. The mixture was stirred for 1 hour and treated with F.
The solid product was then dried under vacuum. Yield 6.9go white powder. Melting point 107℃ Measured value 35.74 4.66 9
．． 65 infrared and NMR analysis support the desired structure.

Preparation of n-butylamine salt of 5.5 g (0,075 mol) of n-butylamine, 15.0 g (
0,075 mol) of 3,5,6-)dichloro-2-
Added to the solution of viridinol. The mixture exothermed and solidified. The extract was filtered for about 15 minutes and the solids were dried. Yield: 18.1g.

White powder. Melting point: 172°C to 173°C.

Measurements 39.87 4.84 10.45 Infrared analysis and crime analysis supported the proposed structure.

Other quaternary ammonium salts are prepared according to the general method described above and using appropriate starting materials.

The invention is further illustrated by the following example.

Example 5 Weighed cubes of Southern Yellow Plne (1.9 x 1.9 x 1.9 c
m) was immersed in a beaker for 20 minutes in a treatment solution consisting of a 50150 CV/V) mixture of ethanol and water and a sufficient amount of active ingredient to give the indicated activity. A vacuum was applied to 950 mHg and then the vacuum was released. The wood cubes are kept in the soaking solution for 0.5 hours, then removed from the solution, the excess solution is wiped off with an absorbent, the cubes are weighed before drying, and the retained active ingredient is Calculated as ppm. The cubes were then dried to constant weight. Weigh the dry cubes and place them separately on the sand bed in the jar.
Approximately 100 subterranean termites were then placed in each jar.

After four weeks, the cubes were removed from the jar and weighed. The decrease in weight was considered to be damage caused by termites.

The following table shows the compounds tested, treatment rates, and retention (average of two cubes), as well as weight loss.

Below, Reihaku Table 1 N-(CH3)3 0.250 3433 0-!
;'18H37 , -(.H3) 30.250 3350 0-'-r
8H17 NHO,25036850,r 4H9 NH2O,2503385Or Summer (C2H40H)2

Claims (1)

[Scope of Claims] 1. A method for reducing and/or preventing termite attack on wood or wood products, comprising the following formula: ▲Mathematical formula, chemical formula, table, etc.▼ (wherein -OA is in the 2- or 4-position; A is a quaternary ammonium moiety; each X is independently chlorine, fluorine, bromine, or iodine; and n is 0, 1, 2, 3, or 4; A method comprising contacting said wood or wood product with a composition containing an effective amount of one or more active compounds of the following. 2. The active compound is 3,5,6-trichloro-2-
The method according to claim 1, which is a quaternary ammonium salt of pyridinol. 3. The method according to claim 1, wherein the active compound is the diethanolamine salt of 3,5,6-trichloro-2-pyridinol. 4. The method according to claim 1, wherein the active compound is the n-butylamine salt of 3,5,6-trichloro-2-pyridinol. 5. soaking and spraying the wood with the active compound;
The method according to claim 1, wherein the method is applied to wood by coating or coating. 6. Termite control composition is 0.00001 to 10% by weight
6. A method according to claim 5, containing the active compound in an amount of . 7. The method of claim 6, wherein the termiticide composition contains from 0.1 to 2.0% by weight of active compound. 8. The following formula: ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (In the formula, -OA is present at the 2- or 4-position; A is a quaternary ammonium component; each X independently represents chlorine, fluorine, bromine, or iodine; and n is 0, 1, 2, 3, or 4); wood products. 9. Wood and wood products according to claim 8, wherein the active compound is a quaternary ammonium salt of 3,5,6-trichloro-2-pyridinol. 10. The active compound is 3,5,6-trichloro-2-
9. Wood and wood products according to claim 8, which are diethanolamine salts of pyridinol. 11. The active compound is 3,5,6-trichloro-2-
Wood and wood products according to claim 8, which are n-butylamine salts of pyridinol. 12. Wood and wood products according to claim 8, wherein the active compound is applied to the wood by soaking it, spraying it or painting it. 13. Wood and wood products according to claim 12, wherein the termiticide composition contains active compounds in an amount of 0.00001 to 10% by weight. 14. Wood and wood products according to claim 13, wherein the termiticide composition contains the active compound in an amount of 0.1 to 2.0% by weight.