JPS6267002A - Formation of antproof layer - Google Patents

Abstract

PURPOSE:To form an antproof layer, by mixing an cationic emulsion obtained by modifying an anionic emulsion with a specific alkylamine derivative with an asphalt emulsion, adding an antproof drug thereto and using the resultant aqueous slurry. CONSTITUTION:An anionic emulsion is modified with an alkylamine derivative having a nonionic organic hydrophilic group, e.g. polyoxyethylene, at one end thereof to give a cationic emulsion, which is then mixed with an asphalt emulsion. An antproof drug is then added thereto to afford an aqueous slurry, which is then applied to soil. Thereby, the slurry permeates into 3-10 cm depth from the surface soil to form an antproof layer without deteriorating the antproof effect and any fear of causing environmental pollution as opposed to a conventional antproof agent rapidly permeating underground without forming the antproof layer.

Description

[Detailed Description of the Invention] Industrial Field of Application This invention provides a termite-proofing layer using a termite-proofing soil treatment agent that prevents termites from reaching buildings, wooden poles, and cables through soil and concrete and causing damage. Concerning the method of forming.

That is, a small amount of cationic emuldicone, which is cationically modified using an alkylamine derivative having a nonionic organic aqueous group at one end, is added to an anionic emulsion to an asphalt emulsion, and an effective amount of an anti-termite agent is added and mixed. The resulting aqueous slurry is sprayed onto the soil, and forms an effective termite-prevention layer by strongly adhering to the soil.

Conventional technology Conventional termites often invade buildings, wooden pillars, and cables from underground and cause damage, so termite prevention measures generally involve building around concrete foundations, bundled stones, etc., and other areas where termites can invade. Water-soluble termiticides are sprayed directly onto the soil and concrete in areas where there is a risk of danger, but these water-soluble termiticides not only make the subfloor humid (ε), but also cause direct flow into groundwater and rainwater that can cause flooding in rivers and rivers. There were drawbacks such as the risk of leakage into ponds, underground water, etc., reducing the anti-termite effect and causing environmental pollution.Also, asphalt is made into fine particles and dispersed in water using the action of a surfactant. There is 81111 asphalt emulsion, which is a blend of an emulsion in which particulate particles are similarly dispersed in water, but the particles are negatively charged and anionic, so the surface of most things, such as soil particles, has moisture. When present, they are negatively charged, so they repel each other and penetrate between soil particles and other small gaps.
<, An anti-termite layer that prevents termite invasion cannot be formed.

Furthermore, when a simple cationic activator that does not contain a nonionic organic hydrophilic group is used, it has been confirmed that when a cationized emulsion is added to asphalt to form a slurry, partial aggregation of the sugar beet slurry particles occurs. It is clear that even if a termiticide is added to such a slurry, an effective termite-proofing layer cannot be formed.

Problems to be Solved by the Invention The present invention solves these problems by forming an anti-termite layer using a soil treatment agent that retains termite-repellent properties for a long period of time. The present invention provides a method.

Means for Solving the Problems The anionic emulsicone used in the present invention is as follows:
Natural W! As the finger latex, any synthetic latex can be used. Synthesis 81 Fat-based mixture is commercially available acrylic ester or styrene.

Emulsions such as butadiene are common and easily available. As a cationic activator for cationizing this anionic emulsicon, it is effective to use an alkylamine derivative having a nonionic organic hydrophilic group at one end, and examples of this nonionic organic hydrophilic group include polyoxyethylene, etc. This is a major feature. In other words, the reason why cationic emulsicone has good results is that the cationic particles of the synthetic fattex are electrostatically and uniformly adsorbed onto slurry particles such as asphalt, and the slurry particles such as asphalt become easier to coagulate with this tare coating. is prevented from coagulating by the nonionic organic hydrophilic groups, resulting in a stable slurry state. Next, when this slurry comes into contact with soil, the coagulation properties of the M fat coating are exhibited, and it is thought that it forms an effective termite-proofing layer. This creates a strong bond with the soil, and even if the soil changes to sandy or clay, the slurry penetrates from the topsoil to a depth of about 3 cts to 10 υ, forming an anti-termite layer, making it possible to maintain a strong bond with the soil. Unlike when water-soluble termiticides are directly sprayed or other emulsions, you can rest assured that there is no risk of them penetrating underground and not forming an anti-termite layer, reducing the anti-termite effect or causing environmental pollution. It is an anti-termite soil treatment agent that can be used.

The aqueous slurry forming the active termite layer is cationic synthetic W1
1 fat emulsion (solids standard ω%) to a cationic asphalt emulsion (asphalt standard ω%), mainly when the solid content ratio Nffj is about 10 of that of asphalt.
%. This mixing ratio can vary depending on whether the soil particles forming the anti-termite layer are sandy or clayey. As a termiticide, chlordane from Versicol, Inc. in the United States has test data showing effective preventive effects and residual efficacy against termites at the U.S. Department of Agriculture's Southern Termite Research Station, and is certified by the Japan Termite Control Association. This is used by thoroughly stirring and mixing 2% of the total solid content. When using a termite control agent other than chlordane, it is mixed in an amount that maintains the insecticidal effect of the agent.

The slurry thus obtained is uniformly spread over the soil by a spraying method or the like to form an anti-termite layer.

EXAMPLES Next, examples of the present invention will be shown. As an anti-termite efficacy test against termites, the experimental method was to uniformly spray the anti-termite soil treatment agent on the ground around the culvert for termites5) - to a depth of about 3 cm.
- formed an anti-termite layer. The height of the anti-termite layer is about 4 in the center.
A bottomless can with a diameter of approximately 30 mm was placed, and one piece of pine horn (IOX IOX 20 m) was placed inside the can and the lid was closed. Cans and pine horn wood were placed in a similar area where no other soil treatment agent was sprayed, and this was used as an untreated plot. These treated and untreated areas were placed randomly around the nest of the Japanese termites.
After installing the cans at intervals of m or more and leaving them for about 6 months, IiW was conducted to determine whether termites had reached the pine horn inside the can from underground and whether there was any damage to the pine wood. Regarding the evaluation of the effectiveness of the termite control test, if there was no evidence that termites had invaded the experimental can and the pine horn wood had not suffered any damage, it would be marked with an ○, and if termites had invaded and damaged the pine wood even slightly, it would be marked with an ○. The item was judged as an X mark. Note that - marks indicate that a clear judgment could not be made. As shown in the table below, the results of the termite control test show that almost all of the pine horn in the untreated area was damaged by termites, but in the treated area, no termite invasion or feeding damage was observed, indicating that termites from underground were completely eliminated. could be prevented.

Table: Ant control test results Effect of the invention The effects of the present invention are as follows.

(1) l! Termites cannot feed on or pass through the termite-proof layer formed around the wooden pillars and underground cables, and they can be killed by just coming into contact with the termite-proof layer, so termites should not be contaminated from underground. Termites can be completely prevented. Cockroaches that live under the floor and underground,
It is also effective in controlling other pests such as spiders and mites.

(2) Even with termiticides that are highly resistant to humans,
Since the anti-termite layer is uniformly cultivated throughout the layer, it is highly safe for the human body and maintains its anti-termite effect for an extremely long time. Furthermore, this anti-termite layer prevents the anti-termite chemicals from flowing into groundwater or being run off by rainwater, thereby preventing environmental pollution. Furthermore, since it prevents hot air from entering underground, it can prevent buildings and other wood materials from absorbing moisture and rotting, extending their durability.

Claims (1)

[Claims] An anionic emulsion is cationically modified using an alkylamine derivative having a nonionic organic hydrophilic group at one end, and an asphalt emulsion is mixed with the cationic emulsion to prevent termites at a content that maintains an effective insecticidal effect based on the total amount. A method of adding chemicals to form an aqueous slurry and using the slurry as an anti-termite soil treatment agent to form an anti-termite layer.