JPS61267A - Antproofing coating solution - Google Patents

Abstract

PURPOSE:To provide an antproofing coating soln. which can retain an effect of controlling termites over a long period of time, by blending an org. phosphorus insecticide and a metal salt of an org. acid with a liquid synthetic resin. CONSTITUTION:An org. phosphorus insecticide (e.g. fenitrothion or phoxim), a metal salt of an org. acid (e.g. zinc caprylate or zinc versatate) and optionally, a pigment are dispersed in a liquid synthetic resin (e.g. liquid polyurethane resin or liquid acrylic resin) to obtain an antproofing coating solution.

Description

[Detailed description of the invention] B1 Purpose of the present invention: [Industrial application field] The present invention relates to an anti-termite coating liquid, and more particularly.

The present invention relates to a highly persistent termite-controlling coating solution that maintains termite-controlling power for a surprisingly long time by coexisting an organic phosphorus insecticide and an organic acid metal salt in a liquid synthetic resin.

[Previous application]

The inventor has already reported two methods for preventing the formation of termite trails, which prevent termite damage to buildings by applying a coating solution mixed with insecticides and termite repellents to areas where termite invasion is expected. A patent application has been filed (Japanese Patent Application No. 58-239404). This method is based on the fact that the so-called soil treatment method, which controls termites by spraying chlordane on the soil, causes pollution in the form of water pollution.
This was proposed as an alternative termite control measure.

By the way, buildings are used for a long period of 30 to 50 years, and once a building is completed, even if the termite prevention treatment is to be repeated later, it will be a major construction work, which is very troublesome. For this reason, even in the method of applying the coating liquid proposed by the present inventors, the termite control effect lasts for a long period of time. It was said that it would be ideal to use the s coating liquid.

However, simply mixing insecticides into paints or solvents does not provide a long-lasting termite coating solution that can protect buildings from termites over a long period of time. Therefore,
A possible solution was to mix in high concentrations of highly toxic insecticides, but there was a risk that the medicinal components would evaporate over a period of minutes, potentially harming the health of the construction workers and residents, so this was not practical. could not be adopted.

[Problems to be solved by the present invention]

The present invention was made in an attempt to overcome the above-mentioned technical bottlenecks in the method of applying an anti-termite coating solution proposed previously, and its aim is to reduce the amount of insecticide contained in a comparatively large amount. Despite its low concentration, its effectiveness lies in providing a safe termite-control coating solution that lasts the entire service life of buildings and has excellent termite-controlling power.

Another aim of the present invention is to provide a practical anti-termite coating agent that can be easily applied by even amateurs on a do-it-yourself basis and does not cause environmental pollution.

Structure of the present invention: [Means for solving the problems] According to the present invention, an organic phosphorus insecticide is mixed into a liquid synthetic resin together with an organic acid metal salt. An anti-termite coating solution is provided.

Therefore, in the present invention, most of the synthetic resins conventionally used for paints and adhesives, such as those whose main component is polyurethane resin material and those whose main component is acrylic resin material, can be used as liquid synthetic resins. is adjusted to a desired viscosity and used.

Next, as organophosphorus insecticides, fenitrothion,
Phoxime, chlorpyrifos, acephate, prothiophos, tetrachlorvinphos, etc. are used, and as the organic acid metal salt, for example, zinc octylate and zinc persate are used. By the way, the reason why the termite control power improves when an organophosphorus insecticide and an organic acid metal salt are mixed is that the metal atoms in the latter have a weak binding force with the organophosphorus compound2. It is speculated that this is due to transfer to the double bond region. for example.

When fenitrothion (C9H+2NOs P-S) reacts with zinc octylate ((,y H-TakuC00)2Zn, Z
It is presumed that the vapor changes to a relatively slow vapor property due to the combination of n.

However, the exact structural formula after one reaction cannot yet be determined at the current research stage, but it is thought that similar reactions occur between other organophosphorus insecticides and organic acid metal salts. .

In other words, the present invention skillfully utilizes the above-mentioned reaction between a phosphorus compound and an organic acid metal salt to provide a termite control agent that exhibits termite control for a surprisingly long period of time with a relatively low concentration of insecticide. It can be said that this is the realization of an ant lubricant.

Effects of the present invention: In the anti-termite coating agent of the present invention, an organic phosphorus insecticide and an organic acid metal salt are mixed into a medium (liquid synthetic resin) that is easy to handle and has a controlled viscosity.

It exhibits termite control power for an extremely long period of time, and can be easily applied by even amateurs like conventional paints and oils. Furthermore, the concentration of insecticides is low, making it an excellent choice for work and living environments. It can be said that it is the most ideal technology to meet social demands for termite control, such as safety. In addition.

The coating liquid of the present invention can also be used as a colored paint by giving it a viscosity comparable to that of a normal paint and adding a pigment as appropriate.

The effects of the present invention will be explained below using test examples.

[Examination example]

An anti-termite coating solution was prepared by mixing an organophosphorus insecticide and an organic acid metal salt into a polyurethane resin solution at the compounding ratio shown in Table 1, and this was applied to a 10×lQcm lauan material (thickness: 0.5fi) and exposed outdoors [Environmental conditions: left in a pine forest (national forest) in Fukiagehama, Hioki-gun, Kagoshima Prefecture (from April 15, 1980 to October 15, 1982)].
When we conducted a comparative test of termite control ability between those that were not exposed to outdoor exposure, the results shown in Tables 2 and 3 below were obtained. In addition, Table 4 is a test of the termite control ability after outdoor exposure of a coating solution prepared without adding #j & acid metal salt, and test product 1 in the same table was tested.
Items ゛ to 6゛ correspond to test products ① to ② in Table 1 (the amount of organic phosphorus insecticide added is also the same).

The above test data is based on a cylindrical container with a diameter of 15 and a depth of 7 cm with plaster on the bottom. Place the above test items ■~■ and 1°~6'' into the container, and place one worker termite in it.
50 soldiers and 15 soldier ants were released, and the room temperature was 28°C.

The humidity was maintained at 95% and the number of dead termites was measured and observed.

Claims (4)

[Claims] (1) An anti-termite coating liquid characterized by containing an organic phosphorus insecticide and an organic acid metal salt in a liquid synthetic resin. (2) The anti-termite coating liquid according to claim (1), wherein the liquid synthetic resin is composed mainly of a polyurethane resin material. (3) The anti-termite coating liquid according to claim (1), wherein the liquid synthetic resin is composed mainly of an acrylic resin material. (4) The anti-termite coating liquid according to any one of claims (1) to (3), wherein the liquid synthetic resin contains a pigment and is prepared as a colored paint.