JPH05345301A - Wood preservative - Google Patents

Abstract

PURPOSE:To obtain wood preservative having excellent antiseptic effect by a method wherein the specified percentage of dibutyl phthalate is added as antiseptic component to wood preservative. CONSTITUTION:Dibutyl phthalate as antiseptic component is added by 20wt.% to wood preservative. In addition, antiseptic component excluding dibutyl phthalate is added and, further, alkyd resin is also added to the wood preservative. The wood preservative is used by spraying or applying to the surface of the wood or by immersing of in the form of medicine such as oily medicine, emulsion, suspension, frothy medicine, pasty medicine or the like. As other antiseptic component, organic iodine-based antiseptic, benzimidazole- or benzothiazole-based antiseptic and triazole-based antiseptic can be added. Furthermore, insecticide such as organophosphor-based one, carbamate-based one, pyrethroid-based one, insect-repellent and efficacy intensifier may well be added.

Description

Detailed Description of the Invention

[0001]

This invention relates to wood preservatives.

[0002]

2. Description of the Related Art Conventionally, various wood preservatives for preventing wood from rotting have been known. JP-A-55-23525
In the publication, it is proposed to use phthalic acid diesters represented by diethyl phthalate for penetrating the drug deep into the wood. In addition, JP-A-59-115
It is also proposed in Japanese Patent No. 805 to use a plasticizer represented by dibutyl phthalate or dioctyl phthalate for the same purpose as described above. However, the ratio of the plasticizer used in the latter to the whole is less than 10% by weight.
The conventionally known wood preservatives are not sufficiently satisfactory in their effects and the sustainability of the effects.

[0003]

DISCLOSURE OF THE INVENTION As a result of intensive studies for solving the above-mentioned problems in conventional wood preservatives, the present inventors have surprisingly found that the use of dibutyl phthalate in a specific proportion or more is excellent. It was found to have an antiseptic effect. The present invention has been completed based on this finding.

[0004]

The present invention relates to a wood preservative containing 20% by weight or more of dibutyl phthalate as a preservative component. In the wood preservative of the present invention, dibutyl phthalate is usually 20% by weight or more, preferably 30 to 80% by weight of the formulation, although it depends on the type of formulation and the mode of application.
It is contained in the range of. In the wood preservative of the present invention, other preservative components and additives can be used in combination with dibutyl phthalate which is the above-mentioned essential component, if necessary. For example, 3-bromo-2,3-diiodo-2-propenylethyl carbonate, 3-iodo-2-propynylbutylcarbamate, 2,3,3-triiodoallyl alcohol, parachlorophenyl-3-iodopropargylformal, etc. Organic iodine preservatives, benzimidazoles such as 2- (4-thiazolyl) benzimidazole, 2-thiocyanomethylthiobenzothiazole and benzothiazole preservatives, 1- (2- (2 ', 4'-dichlorophenyl) -1 , 3-Dioxolan-2-yl-methyl) -1H-1,2,4-triazole, 1- (2-
(2 ', 4'-dichlorophenyl) -4-propyl-
1,3-dioxolan-2-yl-methyl) -1H-
1,2,4-triazole, α- (2- (4-chlorophenyl) -ethyl) -α- (1,1-dimethylethyl)
A triazole-based preservative such as -1H-1,2,4-triazole-1-ethanol may be added. Also, for example, phoxime, chlorpyrifos, fenitrothion,
Organophosphorus insecticides such as pyridafenthion and isofenphos, carbamate insecticides such as bassa and propoxer, cyfluthrin, permethrin, tralomethrin, fenvalerate, etofenprox, Hoe
A pyrethroid insecticide such as -498, a nitroguanidine insecticide such as imidacloprid, a pest repellent, and an efficacy enhancer may be added. Other additives include aromatic petroleum solvents, aliphatic petroleum solvents, alicyclic petroleum solvents, alcohols, ketones, ethers and other solvents,
Examples thereof include resins such as alkyd resins, acrylic resins, and chlorine-based paraffin, as well as stabilizers such as antioxidants and ultraviolet absorbers, emulsifiers, colorants, thickeners, and pigments. Any of these may be used as long as it does not inhibit the effect of the essential component dibutyl phthalate. The wood preservative of the present invention is used by a method such as spraying, coating or dipping on the surface of wood. Therefore, if this purpose is met, the form of the preparation is not limited at all, and for example, an oil, emulsion, suspension, foam, paste, etc. can be appropriately selected according to the application purpose and application object. .

[0005]

INDUSTRIAL APPLICABILITY The formulation of the present invention can enhance the wood preservative effect by using dibutyl phthalate in a specific proportion or more.

[0006]

EXAMPLES The present invention will be described more concretely with reference to the following examples, comparative examples and experimental examples. In addition, below, a part shows a weight part. Wood preservative consisting of the following components Example 1 Dibutyl phthalate 100 Example 2 Dibutyl phthalate 50 Alkyd resin 18 Aromatic petroleum solvent 32 Example 3 Dibutyl phthalate 50 Alkyd resin 12 Modified silicone resin 6 Aromatic petroleum solvent 32 Example 4 Dibutyl phthalate 80 Propiconazole 1 Aromatic petroleum solvent 19 Example 5 Dibutyl phthalate 80 IPBC 1 Aromatic petroleum solvent 19 Example 6 Dibutyl phthalate 30 Propiconazole 1 Alkyd resin 18 Aromatic type Petroleum solvent 51 Example 7 Dibutyl phthalate 30 IPBC 1 Alkyd Example 18 Aromatic petroleum solvent 51 Comparative example 1 Wood preservative consisting of the following components Dibutyl adipate 100 Comparative example 2 Wood preservative consisting of the following components Sebacic acid Dibutyl 100 Comparative Example 3 Tree composed of the following components Preservatives Dioctyl phthalate 100

Experimental Example 1 The compositions of Example 1 and Comparative Examples 1 to 3 were used in a length of 40 mm,
110-12 for hemlock sapwood with a width of 20 mm and a thickness of 5 mm
Immersion treatment was performed so as to obtain 0 g / m ² . Drying after the treatment was performed in the following two ways. Drying 1: The sample was left for 1 week in an indoor dark place at a temperature of 20 to 25 ° C. and a humidity of 40 to 60% RH. Drying 2: After being left for 1 week in an indoor dark place at a temperature of 20 to 25 ° C. and a humidity of 40 to 60% RH, it was further left to stand for 1 month in a hot air circulation type dryer at 40 ° C. After drying 12, a preservative test was carried out by the preservative efficacy test method of the Wood Preservation Society Planning Test No. 1 to determine the average weight loss rate of the treated and untreated materials. The test bacterium was Pleurotus ostreatus. The results are shown in [Table 1].

[Table 1] From the results in [Table 1], it can be seen that the preparation of Example 1 of the present invention has an extremely small weight reduction rate as compared with the other preparations and has an excellent antiseptic effect.

Experimental Example 2 Same as Experimental Example 1. However, only “dry 1” was used for drying.

Table 2 Example 1 0.4 Example 2 0.8 Example 3 0.7 Example 4 0.4 Example 5 1.1 Example 6 1.4 Example 7 2.3 No treatment 23. 9 From the results of [Table 2], it can be seen that the wood preservatives of Examples 1 to 7 have an extremely small weight reduction rate as compared with the untreated wood preservatives and have an excellent preservative effect.

Claims (3)

[Claims] 1. A wood preservative containing 20% by weight or more of dibutyl phthalate as a preservative component. 2. The wood preservative according to claim 1, further comprising a preservative component other than dibutyl phthalate. 3. The method according to claim 1, further comprising an alkyd resin.
Alternatively, the wood preservative according to claim 2.