JP2007015126A - Antifungal composition of wood - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antifungal composition of wood used for preventing the generation of fungi in wood and preferably used together with a water soluble wood pressure injection type preservative and ant-proof agent based on a copper salt or copper oxide. <P>SOLUTION: The antifungal composition of wood contains at least one compound selected from the group consisting of ±1-[2-(2,4-dichlorophenyl)-2-(2-propinyloxy)ethyl]-1H-imidazole or its acid addition salt, 2-n-octyl-4-isothiazolin-3-one, N-n-butyl-1, 2-benzisothiazolin-3-one, as an effective component. In a case that the antifungal composition of wood is combined with the treatment liquid of the water soluble wood pressure injection type preservative and ant-proof agent based on a copper salt or copper oxide, an antifungal capacity is drastically enhanced as compared with a case that the antifungal composition and the water soluble wood pressure injection type preservative and ant-proof agent based on a copper salt or copper oxide are respectively added, and can be kept over a long period of time without damaging preservative properties and ant-proof properties. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a wood fender composition used to prevent the occurrence of wrinkles on wood. Wood protection used in combination with a water-soluble wood pressure-preserving antiseptic ant that is mainly composed of copper salt or copper oxide in order to protect wood used as a building member or outdoor member from decay and insect damage The present invention relates to a composition, and more particularly, to a wood protection composition and a wood protection method capable of maintaining the protection performance for a long period of time without impairing the antiseptic and ant protection properties.

  Wood materials used for building materials, plywood, etc. are subjected to pressure injection treatment with preservatives, ant repellants and insect repellents to prevent decay and damage caused by insects such as termites. Yes. For such antiseptics and anticides, chemicals containing aqueous copper, arsenic and chromium, such as CCA, have been used, but they contain heavy metals that are highly toxic and are harmful to human livestock. There is a risk of polluting the environment. In recent years, copper salt or copper oxide and triazole-based antiseptic compounds, copper salt or copper oxide and quaternary ammonium salt compounds (Patent Documents 1 and 2) are used as antiseptic and antifungal agents for protecting highly safe wood instead of CCA. The water-soluble wood preservative antiseptic agent containing) is diluted 10 to 50 times with water and injected into the wood under pressure. The injection amount is as large as 200 to 500 kg / m3, so that wrinkles are generated before the wood is dried, and the commercial value is remarkably lowered. In order to prevent this, an antifungal agent is added to the processing solution of the water-soluble wood pressure injection antiseptic and ant preservative, and pressure injection treatment is performed. Many antifungal agents for wood have been commercialized, but the physical properties of the above water-soluble preservatives for wood pressure injection, that is, the preservative component contains a metal salt, water insoluble copper salt or oxidation Since copper is dissolved in water with ammonia, ammonium salt, or amines and its liquidity is alkaline, most commercially available antifungal agents do not dissolve, do not disperse, and do not exhibit long-term antifungal performance. . Therefore, 4-chloro-2-methylisothiazolin-3-one (hereinafter abbreviated as CMIT) that is water-soluble and has an antifungal effect is used. (Patent Documents 1 and 3) However, CMIT is difficult to use at a high concentration because it is corrosive to metal and has problems such as damage to the pressure pouring pot, pump, piping, and other devices and skin irritation. . And the biggest problem is that CMIT decomposes in the processing solution when the water-soluble wood preservative antiseptic agent is alkaline, and the concentration gradually decreases, so daily process control (concentration control) is very There is a problem in terms of economy because it becomes complicated and it is necessary to newly add CMIT to maintain the concentration.

JP-A-10-249810 JP 2003-252705 A JP 2001-150404 A

  The present inventor is a problem of the prior art, and relates to a wood fender composition used to prevent the occurrence of wrinkles on wood, preferably a water-soluble composition mainly composed of a copper salt or copper oxide. It is an object of the present invention to provide a wood antibacterial composition that solves workability, metal corrosiveness, antifungal property, and economy as a wood antifungal composition used in combination with a preservative and antifungal agent for pressure injection of wood. is there.

  Then, as a result of intensive studies on the wood antiseptic and antiseptic composition, the present inventor, as an active ingredient, ± 1- [2- (2,4-dichlorophenyl) -2- (2-propynyloxy) ethyl] -1H— Imidazole or acid addition salts thereof (hereinafter referred to as compound 1), 2-n-octyl-4-isothiazolin-3-one (hereinafter abbreviated as OIT), Nn-butyl-1,2-benzisothiazoline-3- An antiseptic ant for pressure injection of water-soluble wood mainly containing a copper salt or copper oxide as a wood antibacterial composition containing at least one compound selected from the group consisting of ON (hereinafter abbreviated as BBIT) as an active ingredient It has been found that when used in combination with a treatment solution of an agent, the antifungal effect is extremely high and the antifungal effect is maintained over a long period of time, and it has been found that the workability is good and there is no metal corrosiveness.

  Compound 1, which is an active ingredient of the wood antifungal composition of the present invention, and OIT and BBIT are widely used as antiseptics and antifungal agents. However, when the active ingredient contains compound 1 and at least one compound selected from the group consisting of OIT and BBIT, rather than adding it alone to the treatment solution of the water-soluble wood preservative antiseptic ant The present inventors have found that the antifouling performance is drastically improved and the antifouling performance is maintained for a long time without impairing the antiseptic and ant proofing properties. Also, compared to CMIT that has been used in the past, it has less metal corrosiveness, and the decomposition which was the biggest drawback of CMIT is effective using compound 1 of the present invention and at least one compound selected from the group consisting of OIT and BBIT. The mixture contained as a component has almost no decomposition and is excellent in workability and economy.

  When mixing Compound 1 which is a component of the present invention and at least one compound selected from the group consisting of OIT and BBIT, the mixing ratio is from 1:49 to 49: 1, preferably from 1:19 to weight ratio. 19: 1 is more desirable. If the mixing ratio is other than this, a synergistic effect on the antifungal property cannot be obtained, so that the amount added to the treatment liquid increases, which is disadvantageous in terms of economy. In addition, the form of the wood antifungal composition of the present invention is not particularly limited as long as it contains Compound 1 and at least one compound selected from the group consisting of OIT and BBIT. Agents. When used as a solubilizer, compound 1 and various solvents capable of dissolving OIT and BBIT, for example, both dissolved in hydrophilic solvents such as alcohols, glycols, glycol ethers, ketones and water Use things. Furthermore, you may add a nonionic and / or anionic surfactant as needed. When used as an emulsion, compound 1 and various solvents capable of dissolving OIT and BBIT, for example, both are dissolved in hydrophobic solvents such as aliphatic hydrocarbons, aromatic hydrocarbons and esters. Use things. Furthermore, you may add a nonionic and / or anionic surfactant as needed.

  Next, although an example and a comparative example of the present invention are given and explained, the present invention is not limited to these. Table 1 shows the composition of the compositions of Examples and Comparative Examples. In addition, the numerical value of a mixing | blending is weight%.

＊１：±１−［２−（２，４−ジクロロフェニル）−２−（２−プロピニルオキシ）エチル］−１Ｈ−イミダゾール
＊２：ジエチレングリコールモノブチルエーテル
＊３：ポリオキシアルキレンアルキルエーテル

* 1: ± 1- [2- (2,4-dichlorophenyl) -2- (2-propynyloxy) ethyl] -1H-imidazole * 2: Diethylene glycol monobutyl ether * 3: Polyoxyalkylene alkyl ether

Test Example 1: Wood decompression injection treatment decompression treatment 1
A preservative antiseptic for wood pressure injection (trade name: Tanaris CY Coopers Arch Chemical Co., Ltd.) containing copper oxide and a triazole-based antiseptic compound as a component was diluted 45 times with water, and this was adjusted to a predetermined concentration in Example 1. To 7 and Comparative Examples 1 to 4 were added under reduced pressure to wood (Batesga: 4 × 7 × 1 cm). Further, these treatment liquids were injected under reduced pressure when left at room temperature for one month. The amount of treatment liquid injected at this time was 250 kg / m 3 or more with respect to the wood.
Decompression treatment 2
Anti-corrosive ant for wood pressure injection containing copper salt and quaternary ammonium compound (trade name: Maitrek ACQ Co., Ltd.) The processing liquids to which Examples 1 to 7 and Comparative Examples 1 to 4 were added were injected into wood (Batesga: 4 × 7 × 1 cm) under reduced pressure. Further, these treatment liquids were injected under reduced pressure when left at room temperature for one month. The amount of treatment liquid injected at this time was 250 kg / m 3 or more with respect to the wood.

Test Example 2: Wood protection test This treated liquid-injected wood was left overnight and then subjected to a wood protection test. This test piece was placed on a potato dextrose agar plate, and 1 ml of sputum mixed spore suspension was sprinkled and cultured at a temperature of 28 ° C. and a humidity of 95% for 2 months and observed every 30 days. As test bacteria, Aspergillus niger, Cladosporium cladosporioides, Penicillium funiculosum, Aureobasidium pullulans, Gliocladium virens, and Fusarium sp. Were used. The results are shown in Tables 2 and 3. However, the display of the degree of pupal growth is based on the following judgment.

−: No growth of wrinkles on the specimen.
+: Growth of wrinkles is seen on the side of the test piece.
++: The growth area of wrinkles on the test piece is less than 1/3 of the total area.
+++: The growth area of wrinkles on the test piece is 1/3 or more of the total area.

From Table 2 and Table 3, the composition of Examples 1-7 of this invention showed the very favorable antifungal effect compared with Comparative Examples 1-3. Further, Comparative Example 4 had a good antifungal effect immediately after the treatment, but the antifouling effect was remarkably reduced when the treatment liquid was poured after being left for 30 days.

Test Example 3: Iron Corrosion Test A preservative ant for pressure injection of wood (trade name: Tanaris CY Copers Arch Chemical Co., Ltd.) containing copper oxide and a triazole-based preservative compound as components, diluted 45 times with water ( Pressurized treatment 1 liquid) and preservative ant for pressure injection of wood (trade name: Maitrek ACQ Co., Ltd. manufactured by Koshiipu Reabing Co., Ltd.) 25 times with water containing copper salt and quaternary ammonium compound as components In a diluted solution (pressurized treatment 2 liquid), iron pieces (25 × 25 × 2 mm) polished in a treatment solution obtained by adding 0.2% of the compositions of Examples 5 and 6 and Comparative Example 4 are placed at room temperature for 2 months. The iron corrosivity was observed after standing. The results are shown in Table 4.

From Table 4, the compositions of Examples 5 and 6 of the present invention are not corrosive to iron, and no change is observed in the treatment liquid. The composition of Comparative Example 4 was found to be iron corrosive, and the treatment liquid also had a tendency to discolor.

The wood antifungal composition of the present invention exhibits excellent antifungal performance, in particular, the wood antifungal of the present invention in a treatment solution of a water-soluble preservative ant for water injection containing a copper salt or copper oxide as a main component. Excellent antifungal properties are obtained when the composition is added and wood is treated. And since it is a wood protection composition that can maintain the protection performance over a long period of time without impairing the antiseptic and ant protection properties, it is not necessary to add a new wood protection composition and it is economical. It also has the advantage that the pressure injection device is less corrosive than conventional antifungal agents.

Claims (3)

  As an active ingredient, ± 1- [2- (2,4-dichlorophenyl) -2- (2-propynyloxy) ethyl] -1H-imidazole or an acid addition salt thereof, and 2-n-octyl-4-isothiazoline-3 A wood antifungal composition comprising, as an active ingredient, at least one compound selected from the group consisting of -one and Nn-butyl-1,2-benzisothiazolin-3-one.   A wood antibacterial method comprising using the wood antibacterial composition according to claim 1 together with a water-soluble preservative / anticide for pressurizing water-soluble wood mainly composed of a copper salt or copper oxide. A water-soluble wood preservative antiseptic agent containing copper salt or copper oxide as a main component is at least one compound selected from a copper salt or copper oxide, a triazole preservative compound, and a quaternary ammonium salt compound. The wood defense method according to claim 2, wherein: