JPS61218502A - Highly permeable wood preservative - Google Patents

Abstract

PURPOSE:The titled preservative, containing liquid paraffin, surfactant, organic solvent and chemical for wood, having improved permeability into wood, perme able into the deep part of the wood, exhibiting higher permeation force than oils even in the case of dried wood, and capable of forming a paste with water. CONSTITUTION:A highly permeable wood preservative obtained by adding a chemical for wood, e.g. chlordene or chlorpyrifos, in an amount exhibiting the drug effect to a composition consisting of 5-30pts.wt. liquid paraffin. n- or iso-paraffin or a paraffin mixture thereof, 5-15pts.wt. surfactant, e.g. nonionic surfactant and 90-55pts.wt. organic solvent, e.g. alcohol, ketone or kerosine. The above-mentioned preservative is suitable for preservation treat ment of wood, e.g. particularly mothproofing, and controlling, antifungal treat ment of wood, etc. EFFECT:Treatment can be carried out suitably even in a place where the wood preservation treatment is difficult such as a wood part with high humidity or hidden site and the preservative forms a pasty viscous liquid by adding water suitably thereto. The paste can be prepared at site at the time of use, and the preservative is safe without causing dispersion of contents, etc.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a wood preservative, particularly for wood insect control, termite control,
Suitable for preservation treatment of wood such as antiseptic and anti-mold.When used, when water is added, it becomes a paste-like viscous liquid, which can be made into a paste on site. This invention relates to a wood preservative that exhibits high permeability even in wood that is difficult to preserve.

[Prior Art] For buildings, especially wooden houses, it is important to perform wood preservation treatments such as antiseptic and anti-termite treatments.

If a building is damaged by termites or the like, it may even be destroyed, and wood-rotting fungi that rot wood are also natural enemies of the building.

In particular, when wood rotting fungi breed on the floor of a house, the building is exposed to a very dangerous condition.

Wood-decaying fungi and termites generally prefer areas with high humidity, such as under floors.

It is generally said that the wood under a residential floor is constantly moist with a moisture content of 35 to 40%.

Conventionally, in order to preserve the wood, the wood under the floor has been treated by applying or spraying a chemical, but it is difficult for the wood to penetrate easily.

It is said that oils penetrate deep into the wood, but this refers to dry wood, and wood with high humidity repels it like ``water and oil'' and only moistens the surface.

Even in emulsions, the drug often develops only on the surface and does not show any penetration.

Therefore, its medicinal effects often remain on the surface of the wood and do not reach deep into the wood.

In addition, the lack of permeability means that the chemical cannot be sufficiently distributed to the wood parts where wood preservation treatment is difficult, and therefore it is not possible to apply preservation treatment evenly.

Wood preservatives can be formulated in the form of an oil-based solution such as taleosote oil, which is used as is, or a water-insoluble drug dissolved in a solvent, an emulsifier added to it, and diluted with water. There are emulsion-type products used, and there are also paste-type products.

Paste-like products have the advantage of adhering well to the wood surface and do not scatter unlike powder-like products, but they also have the disadvantage that the contents tend to separate into phases or stick to the can. be. Furthermore, some conventional paste-type products may cause the chemicals to drip and fall when applied to the vertical surfaces of wood.

[Problems to be Solved by the Invention] An object of the present invention is to provide a wood preservative that has excellent permeability into wood and can penetrate deep into the wood.

Another object of the present invention is to provide a wood preservative that penetrates deeply into wood even when the moisture content of the wood is high, and of course has a penetrating power superior to that of oil even in the case of dry wood.

Still another object of the present invention is to provide a wood preservative that has good permeability and is suitable for wood preservation in hidden areas where wood preservation is difficult to treat.

Still another object of the present invention is to provide a wood preservative that can be made into a paste at the time of use because it becomes a paste-like viscous liquid when water is added appropriately at the time of use. The purpose of the present invention is to provide a stable wood preservative that does not cause such problems.

[Means for solving the problems] The present invention provides liquid paraffin, n-paraffin or 1s
A wood preservative comprising o-paraffin or a mixture of paraffins, a surfactant, an organic solvent, and a wood agent.

Examples of the liquid paraffin used in the present invention include:
Relatively light lubricating oil fractions include, for example, hydrocarbon oils obtained by highly refining spindle oil fractions by washing with sulfuric acid.

Other paraffins used in the present invention include n-paraffins and isoparaffins, which are crystalline paraffin products separated from petroleum and refined, consisting primarily of normal paraffins and small amounts (2,3 % or less) of isoparaffins and naphthenes may be used.

Two or more types of these paraffins may be mixed as appropriate.

As the surfactant used in the present invention, it is preferable to use a nonionic surfactant. Various types of nonionic surfactants can be used, such as polyethylene glycol type and polyhydric alcohol type.Specific examples include polyoxyethylene alkyl ethers represented by the general formula RO(C,Ht,O)aH. ; General formula R-ri9-o (
Polyoxyethylene alkyl phenol ethers and polyoxyethylene allylphenol ethers represented by C, H, O), H; polyoxyethylene alkyl esters represented by the general formula RCOO(C, HρaH); sorbitan alkyl esters represented by the general formula Examples include polyoxyethylene sorbitan alkyl esters represented by the following.

However, in these general formulas, R represents, for example, an alkyl group, and n, n', and n'' each represent an integer.

In the present invention, a small amount of anionic surfactant may be added as a surfactant for the purpose of adjusting viscosity.

Various types of organic solvents can be used in the present invention, including alcohols, ketones, kerosene, etc. One or more types can be used.

The preferred blending amount of the wood preservative of the present invention is as follows.

The above paraffin: 5 to 30 parts (heavy chain, hereinafter the same) Surfactant: 5 to 15 parts (nonionic) Organic solvent: 90 to 55 parts If paraffin does not exceed 5 parts, penetration will be insufficient, and if it exceeds 30 parts. The amount of surfactant used in combination with paraffin, which is sometimes uneconomical, is determined depending on the amount of paraffin and the amount of organic solvent used.

The wood preservative of the present invention is constituted by mixing a wood chemical into the above composition.

As the wood chemicals used in the present invention, various known chemicals for preserving wood, such as various types of antiseptic, insect repellent, anti-termite, anti-mold, etc., can be used. Examples include chlordane (emulsions, solubilizers, oil agents), mixtures of chlordane and tributyltin compounds, creosotho oil specified in JIS K2439, oil-soluble insect repellents and termiticides such as chlorpyrifos, oxime, and organic tin compounds. Oil-soluble antiseptic and antifungal agents such as , organic iodine compounds, organic nitrogen compounds, and mixtures thereof are used.

The above-mentioned drugs are added in the amount necessary to demonstrate their medicinal efficacy. When the drug is dissolved in an organic solvent and used, the amount of the organic solvent may be adjusted as appropriate.

Various other additives required for wood preservation treatment may be added to the wood preservative of the present invention.

The wood preservative of the present invention can be used as an oil as it is, but the paste can be adjusted on-site by adding water at the time of use. For example, 10 parts of the wood preservative of the present invention and 3 parts water It can be suitably used when mixed at a ratio of 5 parts to 5 parts.

The wood preservative of the present invention is of a highly permeable type and is particularly effective for surface treatment, but it is also highly effective for preservation treatment even when treatment methods such as spraying and injector methods are used.

[Example] Next, an example of the present invention will be shown.

Example 1 The permeability of the wood preservative of the present invention into wood was observed using dry veneer, wet veneer, dry veneer, and wet veneer.

The composition of this preservative is as follows.

Liquid paraffin 10 parts Nonionic surfactant 10 parts (polyoxyethylene alkyl phenol ether) Petroleum-based organic solvent 80 parts (aromatic)
The results are shown in Table 1.

Ratio "L Example" 2 The permeability of commercially available oils was similarly observed. The results are shown in Table 1.

The permeability of commercially available emulsions was similarly observed. The results are shown in Table 1.

Table 1 Diffusion properties for various materials is the diffusion radius in the direction perpendicular to the fiber.

It does not exhibit a transparent state.

From Table 1 above, it can be seen that the product of the present invention has excellent permeability, has high permeability even in a wet state, and the drug permeates to the back surface. On the other hand, it can be seen that the conventional product has a low degree of diffusion, and the drug only spreads on the surface and does not penetrate to the back surface.

Furthermore, it can be seen that the product of the present invention exhibits extremely good diffusion and infiltration in the direction perpendicular to the wood fibers.

When the permeability was observed in the same manner as in Example 1 except that paraffin wax was used, similar results were obtained.

- Mix 10 parts of the wood preservative of Example 1 with 3 to 5 parts of water, stir thoroughly to obtain a paste-like preservative, and apply this preservative to the wood shown in Figure 1. From part 1, the base 3 is injected with an injector (nozzle diameter 10 mm) and fixed to the cloth foundation 2.
The penetration height from the injection point of the column 4 vertically installed above was observed. In addition, in FIG. 1, 6 indicates a tenon.

As a result, wetting was confirmed up to 0.8-1 part of the penetration height (X).

[Effects of the Invention] (1) According to the present invention, it was possible to provide a wood preservative that has excellent permeability and can penetrate deep into the wood.

(2) According to the present invention, it was possible to provide a wood preservative that penetrates deeply into wood even when the moisture content of the wood is high, and of course has a penetrating power superior to conventional oils and emulsions even in the case of dry wood. .

(3) As a result of the present invention, as a result of its good permeability, it gradually penetrates into areas where wood preservation treatment is difficult, such as surface treatment such as deep areas under floors, in addition to wood treatment as shown in Figure 1. We were able to provide a chemical suitable for wood preservation treatment, which is easy to perform and has high medicinal efficacy.

(4) Since the wood preservative of the present invention penetrates well into the wood, there is less contamination after construction and the surface is beautifully finished. especially,
Since the wood preservative of the present invention mainly migrates within the conduit of wood, for example, even if the fiber wall is attached to a pillar as shown in FIG. Unlike conventional wood preservatives, the wood preservative of the present invention has the unique property of penetrating through the wood conduit, especially in the direction of the fibers. In cases where it is difficult to apply the drug, coating the drug at a low location has the advantage of omitting work at a high location. Further, for example, as shown in FIG. 1, the drug naturally permeates into the tenon section and the preservation treatment can be carried out without any special preservation treatment being applied to the cut portion as in the conventional case.

(5) According to the present invention, it can be made into a paste by adding water appropriately during use, so take out the wood preservative of the present invention from a container such as a can and adjust the paste by adding water at the time of use (on-site). We have succeeded in developing a revolutionary wood preservative that can

Such a preservative has a paste-like high viscosity, does not sag or fall even on vertical surfaces of wood, and can be adhered sufficiently.

(6) Since the preservative of the present invention can be made into a paste at the time of use, it is possible to avoid instability due to phase separation, which is common with pasty drugs, and it can be used stably.

[Brief explanation of the drawing]

"" 4-re+t 1 is an explanatory diagram of an example of the mode of use of the preservative of the present invention. 4. Fist/Column 5 Red Sound - Injector injection point

Claims (1)

[Claims] 1. A highly permeable wood preservative comprising liquid paraffin, n-paraffin, iso-paraffin, or a mixture of such paraffins, a surfactant, an organic solvent, and a wood agent. 2. The wood preservative according to claim 1, wherein the surfactant is a nonionic surfactant. 3. 5 to 30 parts by weight of liquid paraffin or n-paraffin or iso-paraffin and 5 to 15 parts by weight of nonionic surfactant
3. A wood preservative according to claim 1 or 2, which is obtained by adding a wood chemical to a composition comprising 90 to 55 parts of organic solvent and 90 to 55 parts of organic solvent. 4. The wood preservative according to claim 1, wherein the wood preservative becomes a paste by adding water.