JP2008208107A - Boron-containing ant-repelling liquid composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem wherein conventional ant-repelling composition exerts bad influences on the health of operators or inhabitants though it exhibits ant-repelling properties, as almost all of conventional ant-repelling compositions are a pharmaceutical such as an agrochemical or the like and termites have been terminated by evaporation of the pharmaceutical on one hand, while human health has been injured by the volatilized substance on the other hand. <P>SOLUTION: A borate salt as the main component prevents vermin damage by termites or the like but does not injure the health of humans or house pets as it does not vaporize. Even when the borate salt is taken into the body of humans, dogs, cats or the like, it is discharged out of the body as they have a kidney. Therefore, the borate salt is safe to humans and house pets. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention does not contain harmful volatile substances or volatile substances such as lower aliphatic alcohols (ethyl alcohol), and not only prevents or eliminates white ants, but also corrosiveness of wood, flame retardancy, sustaining its effectiveness, and boron compounds. The present invention relates to a liquid composition for boron-based ant-proofing that has improved solubility and excellent liquid stable storage stability.

  Conventionally, as ant-preventing agents for the purpose of prevention or extermination of white ants (hereinafter referred to as ant-preventing), for example, CCA-based agents (chromium / copper / arsenic compounds), organophosphorus-based agents such as chlorpyrifos, and the like are known. ing. However, CCA drugs have a problem of environmental pollution due to the generation of toxic substances at the time of incineration, and organophosphorus drugs are highly toxic and have been reported to cause health damage, and are not used at present.

  Even in such a situation, ant-preventing compositions mainly composed of agricultural chemicals are still on the market, causing sick house syndrome and the like. Consumers are demanding highly safe building materials, and construction companies are struggling to deal with it.

  Natural ant repellents include Hiba essential oil, moon peach, etc., but the sustainability of the ant repellent effect is weak and expensive. Wood vinegar is also useful in causing white ants to repel activity, but has a unique odor and is unsuitable for use in floor preparations. Creosote oil is also used as an antiseptic and ant repellant, but it has a strong irritating odor and is not suitable for residential use. Creosote also attacks the vinyl chloride resin pipe used for water supply and drainage. Sometimes.

  As described above, the prevention or extinguishing measures (control measures) against white ants that damage wood in wooden houses and other buildings and structures have been increasing recently. Development of a liquid composition for use is desired.

  Boric acid or its salts (hereinafter also referred to as boric acids) are safe and low toxic agents, but the concentration that can be stably added is low and high efficacy cannot be obtained. The composition is easily dissolved in water, for example, when exposed to rain for a long period of time, borate salts are washed away, resulting in a loss of efficacy. In Japan, borates are not currently approved for ant protection because of the risk of leaching from treated wood.

  The product of Eco Powder Co., Ltd., Eco Powder BX, has already been applied for a patent for the surface treatment of an ant preventive composition containing borate, thus preventing white ants against boron compounds such as borax and boric acid. It is well known in the world that it has an extermination effect.

  However, boric acid and borax have low solubility in water (amount g dissolved in 100 g of water) of about 4.0% by weight (hereinafter referred to as%), and sodium borate, Na2B8013, which is said to have the highest solubility.・ 4H20 (Timbore) is about 9.7% even at 20 ℃. These borate concentrations are not suitable for controlling and controlling white ants. Moreover, most of the borate compositions are produced at a temperature heated to room temperature or higher. However, as the temperature becomes lower, all the borate compositions become saturated and start to solidify, resulting in lack of storage stability.

  In addition, there is a method of heating at the time of manufacturing to evaporate the added water / H2O to make a strong liquid, but these start solidification unless water / H2O is completely evaporated, and stable storage stability at room temperature Since the liquid is strong and sticky, it has a weakness that lacks simple workability such as spraying and applying the stock solution to wood.

An anti-ant composition containing alcohol and tar has been applied for a patent, but there is a possibility of threatening the health of contractors who handle wood, prevent and control white ants under the floor of existing buildings, and residents by volatilization of alcohol, etc. There is.
Japanese Patent Publication No. 2004-83572 Japanese Patent Publication No. 2004-175787 Japanese Patent Publication No. 2006-219329

  The present invention improves the above-mentioned drawbacks. Excellent ant-proofing effect, and the effect lasts for a long time, and also has excellent corrosion durability and liquid stable storage stability other than white ants, such as wood-rotting fungi, simple workability, and no volatility. The object is to provide a liquid composition for ant protection with high safety.

  As a result of diligent research to solve the above problems, the present inventor has formulated a specific polymer compound such as a surfactant that enhances permeability, solubility, and liquid stable storage stability in a borate liquid. As a result, the present inventors have found that the above problems can be solved, and have completed the present invention.

  The borate salt may be disodium octaborate tetrahydrate Na2B801 / 4H20 (a product of Rio Tinto Borax, Tinboa). Further, a mixture of boric acid and borax may be used.

  The borate content is preferably 4% to 25%, particularly preferably 5% to 20%.

  In blending boric acids, water is blended as a solvent for boric acids, but it is preferable to blend polyhydric alcohols together with water in order to improve liquid stability. As the polyhydric alcohol, it is preferable to blend sorbitol, erythritol, xylit, maltitol, glycerin, 1,3-butylene glycol, propylene glycol, dipropylene glycol, diglycerin and the like and D.mannitol. Particularly, glycerin and D-mannitol are preferably blended, and glycerin is preferably 0.1% to 10%, more preferably 1% to 5%. D-mannitol is preferably 0.05% to 5%, more preferably 0.02% to 3%.

  The penetrant is preferably blended with polyethylene glycol (PEG), ethylene glycol, hymol, or the like. In particular, blending of PEG and Hymol is good, and PEG is preferably 0.1% to 10%, more preferably 1% to 5%. High mole content is preferably 0.05% to 10%, and more preferably 0.5% to 3%.

  Examples of the surfactant include anionic surfactants such as fatty acid soap (sodium laurate, sodium palmitate, etc.), potassium lauryl sulfate, alkylsulfuric triethanolamine ether, acylmethyl taurate; stearyltrimethylammonium chloride, benzaza chloride Cationic surfactants such as luconium and laurylamine oxide; imidazoline-based amphoteric surfactants (such as 2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt), betaine-based surfactants (alkyl) Amphoteric surfactants such as betaine, amide betaine, and sulfobetaine), Surfynol surfactants such as acetylene glycol and acetylene alcohol, and polyoxyethylene alkyl ether nonionic surfactants Door is preferable. In particular, acetylene glycol, polyoxyethylene alkyl, and ether (Leocol 70 manufactured by Lion Corporation) are preferably blended, and acetylene glycol is preferably 0.01% to 3%, more preferably 0.05% to 1%. Leocol 70 is desirably 0.05% to 10%, and more preferably 0.5% to 3%.

  As described above, the boron-based ant protection composition of the present invention can prevent white ants from entering semipermanently without affecting the health of workers and residents.

  In the present invention, an aqueous solution containing a high-concentration borate can be maintained for a long period of time and used as a surface treatment at the work site as a stock solution.

  The liquid composition for ant prevention of the prescription shown in Table 1 was adjusted from 1 to 8 by the following method. Each composition is prepared in each container (A to M), and the hot water heated to boiling until Examples 1 to 4 and 10 kg of hot water heated to 35 ° C. until Examples 5 to 8 are put in order from the A container. After stirring until completely dissolved and a clear solution, water was added until the total weight reached 18 kg, and the mixture was allowed to stand.

  Table 2 shows the evaluation results of the transparency of the above Examples 1 to 8 over time at normal temperature (6 ° C. to 20 ° C.) and refrigerator temperature (4 ° C.).

  As is apparent from Table 2, the transparency is stable and the storage stability is excellent.

Table 3 shows the results of permeation evaluation by curcumin color reaction on the woods of Examples 1 to 8. Wood pieces are applied to red pine sapwood (dimensions 30 mm x 30 mm x 200 mm) with a brush (110 g / m ² ) and stored indoors and outdoors (under the roof). Each test day was cut and conducted.

As can be seen from Table 3, the borate is excellent in permeability.

Table 4 shows the results of evaluation of the ant-proof effect of Examples 1 to 8.
(Test method)
(1) Test wood piece (a) The wood piece used for the test is a rectangular parallelepiped of red pine sapwood (20 (L) × 10 (R) × 10 (T) mm).
(B) Wood pieces are dried for 24 hours in a thermostat at a temperature of 60 ° C.
(2) Specimen (a) There are two types of specimens: a treated specimen obtained by treating a piece of wood with a sample and an untreated specimen that is not treated with a sample.
(B) The number of specimens shall be 5 for each of the treated specimen and the untreated specimen.
(C) Using a brush on the wood piece for treatment, apply the sample at a rate of 110 g / m ² , leave it at room temperature for 25 days, and make 5 each.
(3) Breeding container As a breeding container, a piece of acrylic resin cylinder with a diameter of 8 cm and a length of 6 cm is used which is hardened to a thickness of about 5 mm, and this is preliminarily spread with wet cotton to a thickness of about 2 cm. Place 10-15 pieces in a tightly closed container. For wet cotton, add 130-150 ml of water to 100 g of wet cotton. Make a small hole in the lid for ventilation.
(4) Breeding (a) On the plaster in the breeding container prepared in the previous section, place the treated specimens or untreated specimens horizontally one by one with the masa surface of the specimen up and down, and randomly Throw 150 craft ants and 15 soldier ants from the nest.
(B) The lidded container is kept in a dark place at a temperature of 28 ° C. for 21 days.
(Test results)
(1) After 21 days, remove the specimen from the breeding container, carefully remove the deposit on the specimen surface, dry at 60 ° C for 48 hours, leave it in a desiccator for about 30 minutes, and weigh to 0.01 g. Then, the mass (W2) is obtained.
(2) Record the number of dead termite ants.
(Display results)
(1) Calculate the mass reduction rate of the specimen by the following formula, and obtain the average mass reduction rate of 8 specimens for the untreated specimen.
Mass reduction rate (%) = [(W1-W2) / W1] × 100
(2) Calculate the mortality rate according to the following formula and obtain the average mortality rate.
Death rate (%) = [Death rate / 150] × 100

  As is apparent from Table 4, it can be seen that all of the borate salt ant liquid compositions of Examples 1 to 8 exhibit an excellent ant repellant effect and have excellent durability.

Claims (5)

  A liquid composition for ant protection comprising a liquid stabilizer, a boron compound, a penetrating agent, and a surfactant.   Liquid stabilizers are glycerin fatty acids, sorbitan fatty acid esters, propylene glycol fatty acid esters, hydrogenated castor oil derivatives, glycerin alkyl ethers, POE sorbitan fatty acid esters, POE sorbit fatty acid esters, POE glycerin fatty acid esters, POE fatty acid esters , POE alkyl ethers, POE alkyl phenyl ethers, Pluronic types, POE / POP alkyl ethers, Tetronics, POE castor oil / hardened castor oil derivatives, D-mannitol, etc., or two or more thereof A liquid composition for ant-proofing, comprising:   The boron compound contains borax (sodium tetraborate), boric acid, octasodium disodium tetrahydrate, or two or more thereof. Liquid composition for ant protection.   A liquid composition for ant-proofing, characterized in that the wood penetrant contains either polyethylene glycol or hymol, or two of them.   The surfactant comprises fatty acid soap, potassium lauryl sulfate, alkylsulfuric acid triethanolamine ether, acylmethyl taurate, acetylene glycol, acetylene alcohol, and the like. Item 5. A liquid composition for termite prevention.