JPS6161802A - Wood conserving agent - 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 "Field of Industrial Application" The present invention provides a wood preservative that has excellent antiseptic, anti-termite, and insect repellent properties over a very wide range of areas, and is highly safe for humans and livestock.

``Conventional technology'' In recent years, the demand for lumber in Japan has increased significantly, domestic forest resources have been depleted, and with the increase in imported materials with low durability such as South Sea lumber, biological damage such as V-leaf ants and wood beetles has increased. is increasing. Additionally, changes in construction methods have created an environment where wood rot and V-rotation damage are more likely to occur.

Traditionally, a variety of wood preservatives have been used to protect wood from biological deterioration. For example, dieldrin and aldrin are termite and insect repellent ingredients.

Organochlorine insecticides such as DDT, lindane, heptachlor, and chlordane, and CCA agents (copper, chromium, and arsenic agents) C
Inorganic fixing compounds such as E' agents (copper, copper, and chromium agents) have been mainly used.

These compounds have drawbacks such as odor, rash, irritation, toxicity to humans and animals, and environmental pollution.

For example, dieldrin has excellent ant and insect repellent properties, but is highly toxic to humans and livestock, and due to its accumulation and persistent properties, it has been designated as a specified chemical substance and its use has been prohibited in Japan. Chlordane is highly toxic to humans and livestock, and is highly accumulative and difficult to decompose, causing serious environmental pollution. Furthermore, since CCA agents and CPU agents contain harmful heavy metals, they pose problems in terms of toxicity to humans and livestock and environmental pollution. In addition, as preservative ingredients, creosote oil, PF agents (phenol, fluorine), OCA agents, chlornaphthalene, organotin compounds, naphthenic acid metal salts, phenolic compounds, etc. have been used, but all of them cause odor, rash, and It has drawbacks in terms of irritation, toxicity to the human body, and environmental pollution.

Due to these circumstances, the wood preservation performance is sustainable over a long period of time, and it is highly safe for humans and livestock.

At present, the development of wood preservatives that are free from environmental pollution is a serious and urgent challenge for those skilled in the art.

``Problems to be solved by the invention'' Many organosin insecticides and carbamate insecticides exhibit excellent insecticidal efficacy, and are highly safe for humans and livestock.
Insect repellent wood preservative with less environmental pollution.

Although some compounds are expected to act as anti-termite ingredients, these compounds generally tend to be easily decomposed by light, heat, water, and soil microorganisms, making it difficult to maintain the long-term efficacy required for wood preservatives. It has been thought that they are inferior to organic chlorine compounds in terms of their properties. In fact, 0,0, which is an organosinyl compound,
-Die≠ρ-0-(α-cyanobenzylideneamino)phosphorothioate and 2-isopropoxyphenyl-N-methyl carbamate, which is a carbamate compound, have a fast-acting and strong insecticidal and anticidal effect. , poor weather resistance when applied to wood.

It cannot be said that it is sufficient in terms of sustainability of efficacy. This is light,
This is thought to be due to the volatilization, decomposition, and leaching of the active ingredients due to heat, water, soil microorganisms, etc.

"Means for Solving the Problems" The present inventors have discovered that although it is highly safe for humans and animals and has little risk of environmental pollution, there has been no track record of its use in the past, and it is difficult to maintain long-term efficacy. As a result of intensive research into active ingredients that were previously thought to be unusable, we discovered that by combining specific active ingredients, we have developed a product that is far superior to conventional wood preservatives. The present invention was completed after discovering that a wood preservative can be obtained.

That is, the present invention relates to 0,0-diethyl-〇-(α-cyanobenzylideneamino)phosphorothioate, 2-isopropoquinphenyl-N-methylcarbamate, N-chlorohexylV#-H-methoxy-2,5-dimethylfuran-
A wood preservative made by dissolving aluminum salts of 3-carfoxamide and rJM-nitroso-N-cyclohexylhydrokylamine in an organic solvent, and has no odor or irritation.

It does not cause rashes and is highly safe for humans and animals.
Also, there is no concern about environmental pollution, and K when applied to wood.
, the excellent wood preservation effect lasts for a long time.

The amount of 0,0-diethyl-〇-(α-cyanobenzylideneamino)phosphorothioate blended in the present invention is 0.05-10.0 parts, preferably 0.1-6.0 parts for wood preservation effect.
Department.

More preferably 0.5 to 8.5 parts, the amount of 2-isopropoxyphenyl-N-methyl carbamate used is 0.0
5 to 10.0 parts, preferably 0.1 to 5.0 parts, more preferably 0.5 to 2.0 parts.

The amount of N-cyclohexyl-2,5-dimethyl 7hun-8-carboxamide used is o.6.1t to 5.0 parts, preferably 0.05 to a.0 parts, more preferably O.a.
~2.0 parts, the amount of aluminum salt of N-nitroso-N-cyclohexylhydroxylamine used is 0.05-10
．． 0 parts, preferably 0.1 to 5.0 parts, more preferably 00a to 3.5 parts.

In order for these active ingredients to penetrate inside the wood.

It is preferable to use a permeability enhancer to prevent volatilization and leaching of the active ingredient and to fully demonstrate its effectiveness.

As a permeability improver, 8 to 50 parts by weight, preferably 5 to 15 parts by weight, of an aromatic solvent with a boiling point of 200°C or higher and a polyethylene glycol monoether (e.g. ethylene crico/k(7) monohexyl or monoisopropyl, monobutyl of monophenyl ether diethylene glycol.

Isobutyl or hequinyl ether, monomethyl, monoethyl, monobutyl ether of triethylene glycol,
Such. ) Mixtures consisting of preferably 5 to 15 parts by weight of aNaO can be advantageously used.

Further, in order to fix the active ingredient inside the wood, it is preferable to use a fixing agent that prevents volatilization and leaching of the active ingredient and allows the effective ingredient to be fully exerted.

The fixing agent is, for example, a solution obtained by dissolving 50 m of algide-modified drying oil in 60 parts of mineral spirit with a boiling point of 150 to 200°C, a flash point of 40°C, and 15% aromatic, and a viscosity of 200 to 25°C at 25°C. 15000cp
1 to aO parts by weight, preferably 8 to 1031 parts by weight, of an alkyd-modified drying oil having an oil length of 80 to 70% such as s can be used.

Sunflower oil, soybean oil, tall oil, linseed oil, etc. are used as drying oils. This pulquito-modified drying oil is obtained by reacting a drying oil with an alkyd resin raw material consisting of a prebasic acid such as phthalic anhydride and a polyhydric alcohol such as glycerin.

In order to allow the powder to penetrate into the wood sufficiently, it is desirable to use a suitable solvent for K. Examples of the solvent include organic solvents such as aliphatic hydrocarbons, aliphatic hydrocarbons, alicyclic hydrocarbons, alcohol solvents, ketone solvents, and ester solvents, alone or in combination.

Furthermore, it is useful to further add various other active ingredients and additives to the wood preservative of the present invention.

0.0-Diethyl-〇-(α-anobenzylidanamino)phosphorothioate, 2-isopropylphenyl-
An ant- and insect-repellent ingredient that can be used with N-methyl carbamate is 0,0-noethyl-(a,5.6-)
dichloro-2-pyridyl)phosphorothiony), O,O
-dimethyl-〇-(2-methyl-4-nitrophenyl)
Phosphorothioate, 0-ethyl-〇-2-ingloboxycarbonylphenyl-N-isoglobyl-thiophosphoroamigo), 0-(2,4-dichlorophenyl)-
〇-Ethyl-8-propyl-phosphorodithiony), (
Organic compounds such as Zl-2-chloro-1-(2,4゜5-trichlor7ethyl)vinyl-phosphorodithioate, 0-seaguti/L/phenyl-N-methylcarbamate, 0-naphthyl -Carbamate compounds such as N-methyl carbamate, 1,1,1,2.6,7,
Examples include organic chlorine compounds such as 7,7-octachloro-4-oxaheptane. N,N-dimethyl-N'-(dimethyl Chlorfluoromethylthio)-7-7enylsulfamide, 4-
Examples include chlor-phenyl-a'-iodopropargyl formal and dido-tomethyl-4-methylphenylsulfone.

In addition, υ contains a wood mold-proofing agent, and stabilizers 1 and colorants include antioxidants and ultraviolet absorbers.

Rust inhibitors, etc. can be added.

To apply the wood preservative of the present invention to wood etc., apply it, spray it, &! The methods conventionally applied for oil-based or oil-soluble stimulants, such as preparative injection, spraying, and mixing, can be used.

"Effects of the Invention" The wood preservative of the present invention has no drawbacks such as odor, irritation, and rash, and is highly safe for humans and animals.

Moreover, when applied to wood, it exhibits an excellent wood preservation effect over a long period of time without worrying about environmental pollution.

Example 1 o,0-diethyl-〇-(α-cyanobenzylig1-amino)phosphorothiony) t,og2-ingloboxyphenyl-N-methylcarbamate
0.5 part N-nitrone-y-
Aluminum salt of cyclohexylhydroxylamine
, 5g6 1 N-V clohequine-N-methoxy-2,5-dimethyl 7-funcarboxamide 0.5g boiling point 2
90-305℃, 100% aromatic solvent
10 parts diethylene glycol motsubutyl ether 10 parts alkyd-modified soybean oil (
Oil length 66, viscosity & 1070C8) 5 parts petroleum solution [(boiling point 203-260℃, aromatic content 21%)
72.5 parts The above ingredients were stirred at 30° C. for 1 hour to completely dissolve the active ingredient, permeability improver, and alkyd-modified soybean oil in the petroleum solution, thereby preparing a homogeneous wood preservative.

a Mineral spirit 50% solution (blank below) Comparative example 1 0, O-diethyl 1v-o-(α-cyanochopoxylideneamino)phosphorothiony) 1.0 parts 2-isopropoxyphenylene--N-methymucarbamate 0.5 part N
-Nitroso-N-cyclohexy μhydroxy amine aluminum salt 1. OS permeability improver (
Boiling point 290-305℃, aromatic 100%)
10 parts diethylene green μ monobutyl ether/' 10 flJ aqueous modified soybean oil (oil length 66, viscosity 107008) 5 parts petroleum solvent (boiling point 203-260°C, aromatic content 21%)
72.5 parts The above ingredients were stirred at 30° C. for 1 hour to completely dissolve the active ingredient, permeability improver, and alkyd-modified soybean oil in the petroleum-based molten gK, thereby preparing a uniform wood preservative.

a Mineral spirit 50% solution (25°C) Comparative example 2 0.0-diethyl/I/-〇-(α-aneanobenzylideneamino)phosphorothioate 1. o part 2-inderopoxyphene A/-N-methypcarbamate
0.5 parts N-cyclohexyl-N-methoxy-2,5-dimethylfuran-carboxamide T, O permeability improver (Itf [1 point 29
0-305℃, 100% aromatic)
10 parts diethylene glycol monobutyl ether 1
0 parts alkyd modified soybean oil (oil length 66, viscosity 1107o
cs) 5 petroleum solvent (boiling point 203-260°C, aromatic content 21%>72.5 fl
1S Stir the above ingredients at 30°C for 1 hour to remove the active ingredients.

Penetration improver, alkyd-modified soybean oil is completely dissolved in petroleum solvent to form a uniform wood preservative ff4! l! did.

a Mineral Spirit 50% Solution Comparative Example 3 0.0-diethyl-〇-(α-anobenzylidanamino)phosphorothioate 1.5tlSN-nitroso-N-cyclohexylhydrokynylamine aluminum z O,5sN-cyclohexyl-N- Methoxy-2,5-dimethylbran-carboxamide 0.5 parts Penetration improver (boiling point 290-80
5℃, 100% aromatic) 1
0 parts diethylene glycol motubutyl ether 1
0 parts alkyd modified soybean oil (oil length 66, viscosity a 1070C
8) 5 parts Petroleum solvent (boiling point 208-260°C, aromatic content 21%) 72.5 parts The above components were stirred at 30°C for 1 hour to obtain the active ingredients.

A uniform wood preservative was prepared by completely dissolving the permeability enhancer, alkyd-modified soybean oil, in a petroleum solvent.

a Mineral Spirit 50% Solution Comparative Example 4 2-isopropoxyphenyl-N-methylcarbamate 1.5 parts N-nitroso-N-cyclohexylhydrokynylamine aluminum #Lo o, s part N-cyclohexyl-N
-Methoxy-2,5-dimethyl 7-carpoxamide O, S part permeability improver (boiling point 290-805℃
, aromatic 100%) 10 parts diethylene glycol motsubutyl ether IO Alkyd modified soybean oil (oil length 66, viscosity a 1070C8) 5
Miyako Petroleum based solvent (boiling point 20a~260℃, aromatic content 21
%) 72.5 parts The above ingredients were stirred at aO 0 C for 1 hour to completely dissolve the active ingredient, permeability improver, and alkyd-modified soybean oil in the petroleum solvent to prepare a uniform wood preservative.

a Mineral spirit 50% solution test example 1 Using the wood preservatives prepared in Examples and Comparative Examples 1 to 4, a preservative efficacy test was conducted in accordance with Japan Wood Preservation Association Standard No. 1. An anti-termite efficacy test was conducted in accordance with . The results are shown in Table 1.

(hereinafter referred to as Eidai) Test Example 2 Using the wood preservative of the example, an eight-year field test was conducted in Fukiagehama, Kagoshima Prefecture, in accordance with the Japan Wood Preservation Association Standard No. 11, and the termite prevention As a result of examining the efficacy and antiseptic efficacy, no damage caused by termites or wood-decaying fungi was observed in any of the treated test specimens. - The untreated test specimens suffered significant feeding damage eight months after the start of the test, and the weight loss rate reached 70% or more, with some specimens unable to maintain their original shape.

This result shows that the wood preservative of the present invention has excellent performance.

Claims (1)

[Claims] O,O-diethyl-O-(α-cyanobenzylideneamino)phosphorothioate, 2-isopropoxyphenyl-N-methylcarbamate, aluminum salt of N-nitroso-N-cyclohexyl-hydroxylamine and N-cyclohexyl N-methoxy-2 , 5-dimethylfuran-3-carboxamide dissolved in an organic solvent.