JPS5849674B2 - How to prevent deterioration caused by mold - Google Patents

Description

[Detailed description of the invention] The present invention uses PC boards, concrete,
When carrying out an interior construction method that uses wall materials such as concrete blocks and ALC boards, and directly attaches gypsum boards to the base wall using a ball-shaped adhesive mixed with water,
The present invention relates to a method of preventing deterioration caused by mold that occurs after completion of wall interior construction work by adding an agent that inhibits the growth of mold to the ball-shaped attachment agent.

Recently, a significant amount of mold has been found growing on the inner walls of buildings after construction work has been completed, and many interiors are being redone.

Mold is especially common on interior walls that have been finished with wallpaper buttons or cloth.

This phenomenon is hardly observed in mortar construction method, but
The direct gypsum plastering method, commonly known as the GL construction method or the Pétain construction method among construction professionals, uses PC boards, concrete, concrete blocks, and ALC as the base wall of buildings.
Used as wall materials such as boards, knead adhesive (for example, GL Bond, Snowpond) with water, apply it to the base wall in the form of dumplings, and apply plasterboard ( This is especially common after the completion of construction using the method of directly attaching plasterboard (gypsum board, plasterboard, etc.).

This construction method is very easy to use and the construction can be completed in a short period of time.A layer of air is formed between the button and the attached plasterboard and the base wall, and this layer of air provides insulation. This construction method is also widely used in the construction of condominiums and other buildings, as it has the advantage of creating very good conditions for soundproofing.

However, since no measures are taken to prevent the growth of mold in buildings constructed using these construction methods, the growth of mold is significant.
Particularly during the rainy season, when high temperature and humidity conditions overlap, the beautifully finished wall surfaces often become moldy and discolored, often requiring the interior to be redone.

Redoing such interior work will cause great damage in both labor and economic terms, so measures to prevent mold are strongly desired.
This is what is happening.

As a result of research into the mechanism of Vc mold generation in this field, the present inventors came to the following conclusion.

In other words, an adhesive (for example, the above-mentioned GL Bond Sunobond) is applied to the base wall in the form of a ball, and the plasterboard attached to the base wall absorbs water that is contained in a large amount in the adhesive. Mold grows on natural products such as starch paste and puff glue, which are included in adhesives to significantly prevent buttons and volatilization.

This is a phenomenon that occurs inside the wall and does not appear on the surface, so it has no direct bearing on aesthetics, and mold growth is not a serious problem at this point.

Next, the moisture whose evaporation and volatilization were significantly prevented by the plasterboard will eventually migrate to the plasterboard, but this plasterboard is also covered with wallpaper, cloth, vinyl, etc. for interior use, so here too. This prevents moisture from evaporating and volatilizing, resulting in moisture remaining between the gypsum board and the wallpaper.

In Step 1, an adhesive containing the aforementioned natural substances is present between the plasterboard and the wallpaper to fix the wallpaper, and this adhesive migrates and absorbs the remaining moisture. Good source of nutrients for mold growth.

When the conditions for mold growth are satisfied in this way, mold will rapidly grow in a short period of time, and will grow and grow on the surface of the wallpaper.

In this way, the interior walls deteriorate, resulting in a significant loss of aesthetics and eventually requiring the interior to be redone.

As a result of separating and fixing the molds generated here, the present inventors found that the typical degrading bacteria are Penicillium, Alternaria, and Burularia.

Based on such knowledge, the present inventors developed an interior wall [,;
- We have conducted various research on methods that can suppress the growth of mold and prevent its deterioration.

As a result, it was discovered that deterioration caused by mold can be prevented for a long period of time by adding an antifungal agent to adhesives such as GL Bond and Snow Bond, and the present invention has been completed.

Compounds that are effective in preventing the growth of mold and preventing deterioration include 2-(4-thiazolyl)-benzimidazole, methyl 2-penzimidazole carbamate, methyl 1-butylcarbamoyl-2-penzimidazole carbamate, -chloro-3,5-xylenol, 4-
Chloro-3-cresol, zinc dimethyldithiocarbamate, tetramethylthiuram disulfide, zinc ethylene bisdithiocarbamate, 2,3-dichloro1
, 4-naphthoquinone, 2,4,5. 6-tetrachlorisophthalonitrile, N-(}licromethylthio)tetrahydridephthalimide, dimethyllaurylbenzylammonium chloride, ? rifenyltin chloride, N”-(dichlorofluoromethylthio)-N,
Examples include N-dimethyl-N'-phenylsulfado.

These compounds can be used as raw materials or in the form of emulsions or aqueous agents.

Next, some examples of the formulation will be illustrated.

Formulation example 1 (emulsion) 5 parts of 2-(4-thiazolyl)-benzidazole (indicates parts by weight; the same applies hereinafter) 85 parts of dimethyl sulfoxide 10 parts of Button and Solpol 2939 (trade name of emulsifier manufactured by Toho Chemical Industry Co., Ltd.) were mixed and dissolved to form an emulsion.

This product can be used by diluting it with water or by diluting it with water.

Formulation Example 2 (Irrigation agent) 40 parts of 4-chloro-3,5-xylenol, 8 parts of lauryl sulfate, and 52 parts of clay were uniformly mixed and pulverized to prepare an irrigation agent.

This product is used after being diluted with water.

Example GL Bond (trade name of adhesive manufactured by Yoshino Gypsum Co., Ltd.) 25
14 parts of a medicinal solution containing 0.5% of 4-chloro-3,5-xylenol (diluted solution of water use agent of Formulation Example 2) were added to the mixture and thoroughly kneaded.

Take about 300f of this kneaded GL bond and apply 1rr to the concrete of the base wall. It was applied in the form of dumplings at a rate of 14 pieces per coat, and a plasterboard was immediately attached and left for 4 hours to adhere.

Four days later, wallpaper was attached to the gypsum board using a vinyl acetate/polyvinyl alcohol copolymer adhesive.

No mold growth was observed for 60 days thereafter.

On the other hand, when the interior work was carried out in the same manner as in this example without adding any chemicals, blue mold developed over the entire interior after 14 days and the interior deteriorated.

A drug solution containing 0.5% of 4-chloro-3,5-xylenol [a drug solution containing 0.5% of Kae2-(4-thiazolyl)-benzimidazole (diluted solution of the emulsion of Formulation Example 1) was used] A similar phenomenon occurred when

This example was carried out during the rainy season, when the outbreak is most active.

As is clear from the above examples, the method of the present invention
By simply adding an anti-mold agent to a ball-shaped adhesive such as L-Bond, you can prevent the growth of mold on interior walls for a long period of over 60 days, even during the rainy season when mold is most likely to grow. It is a very practical and effective anti-mold method because it can be prevented and the anti-mold method itself is simple.

Claims (1)

[Claims] 1 Using wall materials such as PC boards, concrete, concrete blocks, ALC boards, etc. as the base wall of a building, and directly attaching gypsum boards to the base wall using a ball-shaped adhesive mixed with water. A method for preventing deterioration due to mold that occurs after the wall interior work is completed by adding a drug that inhibits the growth of mold to the adhesive in the form of a ball.