WO2009014106A1

WO2009014106A1 - Anti-fungal composition

Info

Publication number: WO2009014106A1
Application number: PCT/JP2008/063079
Authority: WO
Inventors: Hiroshi Imai
Original assignee: Sumika Enviro-Science Co., Ltd.
Priority date: 2007-07-20
Filing date: 2008-07-14
Publication date: 2009-01-29
Also published as: JP2009023258A

Abstract

Disclosed is an anti-fungal composition comprising 2-n-octyl-4-isothiazolin-3-one and a dialkyldimethyl ammonium compound having a C8-18 alkyl group as active ingredients. The anti-fungal composition has no concern about the problems in workability, metallic corrosion, anti-fungal activity and economic disadvantage, is useful as an anti-fungal composition for woody materials, and can be used particularly in combination with an injection-type water-soluble wood preservative agent comprising a copper compound as an active ingredient.

Description

Antifungal Composition Technical Field

The present invention relates to an antifungal composition used to prevent the occurrence of wrinkles on wood.

(fungicidal composition). In particular, pressure injection into wood

This is an antifungal composition suitable for use in combination with water preservative (J (wood preservative)), which can be used for long periods of time without compromising the effectiveness of woodfield preservatives. It should be related to a fender for wood that can maintain its performance.

Wood and plywood materials used for construction materials are treated with antiseptics and insecticides injected into the wood to prevent decay and to prevent damage caused by white insects and other pests. . Specific examples include a copper salt or a compound of copper oxide and triazole compound (Japanese Patent Laid-Open No. 10-249810), a copper salt or copper oxide and a quaternary ammonium compound (specialized 200 3-2). 5 2 705) is used as a water-soluble wood preservative. Water-soluble wood preservative is diluted with generally 1 0-50 fold in water, but is used by being Note enter the timber, the injection volume as large as 200~500 k gZm ^3, the mold until the wood is dried Problems that occur and significantly reduce commercial value are likely to occur. Therefore, in order to prevent this, an antifungal agent is added to the diluted solution of the water-soluble wood preservative and injected.

Many antifungal compositions for wood have been commercialized, but many water-soluble wood preservatives for injecting wood generally contain metal salts as preservatives and are alkaline solutions. Many commercially available antifungal compositions are not dissolved or dispersed and have problems such as long-term antifungal performance.

It is also known to use isothiazoline compounds having high potency and P-potency (Japanese Patent Application Laid-Open No. 10-249810, Japanese Patent Application Laid-Open No. 2001-47408, Japanese Patent Application Laid-Open No. 2001-1). 5 0 4 0 4) is a halogenated isothiazolone compound, for example, 4-chloro-2-methynoleisothiazoline-3-one or 4,5-dichloro-2-octylruo 4-isothiazoline- ₃ -one When used, it was difficult to use at high concentrations because of its corrosive nature, which could cause damage to the pressurization pot, pump, piping, and other equipment, as well as strong skin irritation. In addition, when used in water-soluble wood preservatives that are strong in strength, the halogenated isothiazolone compound decomposes, so it is necessary to add a new one. There was a problem that the daily concentration management of this product was complicated. Disclosure of the invention

The present invention relates to an antifungal composition for wood, particularly when used in combination with a water-soluble wood preservative containing copper salt, copper hydroxide or copper oxide as an active ingredient, workability, metal corrosiveness, antifungal. It is intended to provide an antifungal composition and a wood antifungal method having improved properties and economy.

The antifungal composition of the present invention comprises 2-n-octinole 4-sothiazoline-3-one

(Hereinafter abbreviated as OIT) and a dialkyldimethylammonium compound having an alkyl group having 8 to 18 carbon atoms as active ingredients, and water-soluble wood preservation containing copper salt or copper oxide as an active ingredient When used in combination with a chemical, it exhibits an extremely high anti-bacterial effect over a long period of time, and has good workability and no metal corrosiveness. Each of OIT and dialkyldimethylammonium compound, which are active ingredients of the antifungal composition of the present invention, is known as an antifungal ingredient and is commercially available.

The alkyl group of the dialkyldimethylammonium compound used in the present invention has 8 to 18 carbon atoms and is generally represented by the formula (1)

(R 1 and R 2 are the same or different and each represents an alkyl group having 8 to 18 carbon atoms. X— represents a counter ion). Examples of the counter ion include a counter ion constituting a salt that is acceptable as an antifungal component, such as a halogen ion, a sulfate ion, a phosphate ion, and an organic acid ion, and a chlorine ion is preferable. As the dialkyldimethylammonium compound, didecyldimethylammonium chloride (hereinafter abbreviated as DDAC) is particularly preferable.

In the present invention, the mixing ratio of OIT and the dialkyldimethylammonium compound is generally 1:49 to 49: 1, preferably 1:19 to 19 in weight ratio in order to obtain a synergistic effect. : 1

Further, the form of the antifungal composition of the present invention is not particularly limited, but for example, liquid formulation,? Similar U-force S such as Shiji 1J (emulsifiable concentrate). The liquid agent is dissolved in various solvents that can dissolve OIT and dialkyl dimethyl ammonium compounds, for example, hydrophilic organic solvents such as alcohols, glycols, glycol ethers, and ketones, water, etc. Further, a noionic surfactant and / or a ionic surfactant may be included.

In addition, the emulsion is dissolved in various solvents capable of dissolving OIT and dialkyldimethylammonium compounds, for example, hydrophobic solvents such as aliphatic hydrocarbons, aromatic hydrocarbons, esters, and the like. A nonionic surfactant and / or ayuionic surfactant is added.

The total amount of OIT and dialkyldimethylammonium compound contained in these preparations is usually 5 to 50% by weight, preferably 10 to 20% by weight, based on the whole preparation.

The antifungal composition of the present invention is processed into a wood material for the purpose of preventing the occurrence of wrinkles on the wood. Application rates, generally OIT and dialkyl dimethyl ammonium -.. 0 5 kg, from 0 0 1 per timber lm ³ in the total amount of the © beam compound is preferably 0 0 2 0 2 kg...

Although the antifungal composition of the present invention can be processed alone into wood, it is particularly suitable for pouring into wood together with a water-soluble wood preservative. The water-soluble wood preservative usually contains a copper compound and a bactericidal triazole compound and / or benzalkonium chloride as active ingredients. The copper compound is generally a copper salt, copper hydroxide, or copper oxide, and examples of the copper salt include chloride chloride, copper phosphate, copper sulfate, and copper carbonate. Examples of bactericidal triazole compounds include cyproconazole, propiconazole, tebuconazole, hexaconazol, epoxyconazole, ipconazole, and metconazole.鲖 Compounds are usually contained in water-soluble wood preservatives in an amount of 1 to 30% by weight. Bactericidal triazole compounds and benzalkonium chloride are usually contained in water-soluble wood preservatives in an amount of 0.1 to 5% by weight and 1 to 30% by weight, respectively. The water-soluble wood preservative may contain a solvent, a surfactant and the like in addition to these active ingredients. As a water-soluble wood preservative, a commercial product containing a copper compound and a bactericidal triazole compound as active ingredients, for example, Tanaris CY (Coppers Arch Chemical Co., Ltd., copper oxide 10% or more, cyproconazole 0. 1% or more), a commercial product containing a copper compound and salt benzalkonium as an active ingredient, for example, Maitrek ACQ (manufactured by Kosip Rezabing Co., Ltd., copper oxide 10% or more, chloride) Benzarco-um containing 5% or more) can also be used. The water-soluble wood preservative is usually used after diluting 20 to 50 times with water, and the antifungal composition of the present invention is added to this dilute solution as a sum of OIT and dialkyldimethylammonium compound. Add it so that the concentration is within the range of 50 to 100 ppm, and pour the obtained wood preservative into the wood at about 200 to 500 kg / m ³ . Example

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 blends of the yarns and the compositions of Examples and Comparative Examples. The numerical value of the combination is% by weight. table 1

* 1: 4—Black mouth 2—Methylisothiazoline-3-one

* 2: 4,5-dichloro-1,2-octatinole 4-isothiazoline 3-_one

* 3: Jetylene glycono monomono chinenoate

* 4: Test example 1 and test example 2 show the pressure injection treatment method (pressure reduction treatment method) for polyoxyalkylene alkyl etherol wood. Test example 1 Injection treatment to wood 1

Dilute water-soluble wood preservative (trade name: Tanaris CY Copas. Arch Chemical Co., Ltd.) containing copper oxide and a triazol compound as active ingredients 40 times with water, and carry out this to a predetermined concentration. Examples 1 to 5 and Comparative Examples 1 to 7 were added and injected into wood (wettsuga: 4 × 7 × 1 cm) by vacuum treatment. In addition, these diluted solutions were injected by decompression even when left at room temperature for one month. The amount of diluent injected at this time was 2500 kg / m ³ or more with respect to the wood.

Test example 2 Injection into wood 2

Dilute water-soluble wood preservative containing copper salt and quaternary ammonium compound (product name: Maitrek ACQ Co., Ltd. Kosip Rezabing Co., Ltd.) 25 times with water. Examples 1 to 5 and Comparative Examples 1 to 7 having a predetermined concentration were added and injected into a wood material (Baitsuga: 4 × 7 × 1 cm) by a reduced pressure treatment. In addition, these diluted solutions were also injected by decompression when left at room temperature for one month. The amount of diluent injected at this time was more than 2500 kg Zm ³ for wood. The wood protection test method is shown in Test Example 3.

Test Example 3 Wood protection test

The test pieces that had been injected under reduced pressure in Test Examples 1 and 2 were left to stand for 1 month, and then subjected to a wood protection test. This test piece was placed on a potato dextrose agar plate, sprinkled with 1 ml of sputum mixed spore suspension, cultured at 30 ° C. and 95% humidity for 30 minutes, and observed every 14 days. As test bacteria, Aspergillus niger, Cladosporium cladosporioides _r Penicillium funiculosum, Auobasidium pullulans, Gliocladium virens, Fusari um sp. The results are shown in Tables 2 and 3. However, the display of the degree of growth of cocoons is based on the following judgment.

1: No growth of wrinkles is seen on the specimen.

+: Growth of wrinkles is seen on the side of the specimen.

+ +: The growth area of wrinkles on the specimen is less than 1/3 of the total area.

+++: The growth area of the cocoon on the specimen is 1/3 or more of the total area.

Table 2 shows the results of the antifouling test of the test pieces injected in Test Example 1.

Immediately after treatment solution adjustment 30 days after treatment solution adjustment Treatment concentration

Formulation example Culture days Culture days

(%)

2 weeks 4 weeks 2 weeks 4 weeks No addition 0 + + + + + + + + + + + +

0. 10 ―

Example 1 +-+

0. 20 ― ― 1

0. 10 ― ― ― ― Example 2

0. 20 ― ― 1

0. 10 1 ― ― Example 3

0. 20 ― ― ― ―

0. 10 ―

Example 4 + one +

0. 20 ― ― ― ―

0. 10

Real 5 ― + One

Examples +

0. 20 ― ― ― ―

0. 10 ―

Comparative Example 1 + + ― + +

0. 20 One + ― +

0. 10

Comparative Example 2 + + + + + +

0. 20 ― + ― + +

0. 10

Comparative Example 3 + + + + + + + + +

0. 20 + + + + + + + +

0. 10 ―

Comparative Example 4 + + + +

0. 20 ― ― + +

0. 10 ―

Comparative Example 5 + + + +

0. 20 ― ― ― + +

0. 10 ―

Comparative Example 6 + + + +

0. 20 One-+ +

0.10

Comparative Example 7 + + + + +

0.20 ― + 1 + + Table 3 shows the results of the antifouling test of the test pieces injected in Test Example 2.

Table 3

From Table 2 and Table 3, the compositions of Examples 1 to 5 of the present invention are comparative examples: Compared to ~ 7, an extremely good antifungal effect was observed. In addition, Comparative Examples 4 and 5 had a good antifungal effect immediately after the treatment, but the antifouling effect was remarkably reduced when the diluent was injected after standing for 30 days.

Test Example 4 Iron corrosion test

A water-soluble wood preservative (trade name: Tanaris CY Cooper's Arch Chemical Co., Ltd.), which contains copper oxide and triazole compound as active ingredients, diluted 40 times with water (diluent 1), copper salt and Example 2, comparison with wood preservative (trade name: made by Maitrek ACQ Co., Ltd. Kosip Rezabing Co., Ltd.) 25 times diluted with water (diluent 2) containing quaternary ammonium compound as active ingredient Example 4 and ratio The composition of Comparative Example 5 was added so as to be 0.2% by weight of the whole diluted solution. Polished iron pieces (25 x 25 x 2 mm) were placed in these diluting solutions and allowed to stand for 1 month at room temperature to observe iron corrosion. The results are shown in Table 4.

Table 4

From Table 4, the composition of Example 2 of the present invention is not corrosive to iron, and no change is observed with respect to the diluted solution. The compositions of Comparative Examples 4 and 5 were found to be corrosive to iron, and the diluent also had a tendency to discolor. Industrial applicability

The antifungal composition of the present invention exhibits excellent antifungal performance, and particularly excellent antifungal properties when added to a diluent of a water-soluble wood preservative for injection containing a copper compound as an active ingredient and treated with wood. Is obtained. In addition, since the anti-fouling performance can be maintained over a long period of time, it is economical and has a feature that the metal corrosion of the injection device is low.

Claims

The scope of the claims

1. As an active ingredient

2. An antifungal composition comprising: 2_n-octyl-4-l-isothiazoline-l-one and a dialkyldimethylammonium compound having an alkyl group having 8 to 18 carbon atoms. 2. The antifungal composition according to claim 1, wherein the composition is muchloride.

The antifungal composition according to claim 1 or 2, wherein the weight ratio of 3.2—n-octyl-4 monoisothiazolin-3-one and dialkyldimethylammonium compound is in the range of 1: 4 9 to 4 9: 1. .

The antifungal composition according to claim 1 or 2, wherein the weight ratio of 4.2—n—octinole 4-isothiazolin-3_one to dialkyldimethylammonium compound is in the range of 1: 19-19-1: 1. .

5. An antifungal method in which the antifungal composition according to claim 1 and a water-soluble wood preservative are injected into wood.

6. The antifungal method according to claim 5, wherein the water-soluble wood preservative is a water-soluble wood preservative containing a copper compound, a bactericidal triazole compound and Z or benzalkonium chloride as active ingredients.

7. An antifungal composition according to claim 1 is added to a water-soluble wood preservative, and dialkyldimethylammonium having 2—n 1 otachinole 4—sothiazoline 1-3-one and an alkyl group having 8 to 18 carbon atoms. A wood preservative having a total concentration of 50 to 100 ppm in total.

8. The wood preservative according to claim 7, wherein the water-soluble wood preservative is a water-soluble wood preservative containing a copper compound and a bactericidal triazole compound and / or benzalkonium chloride as active ingredients.