Algae killer

Abstract

The present invention aims to provide a moss killer that exhibits excellent moss-killing effects and has minimal impact on the treated substrate. [Solution] A moss killer containing a compound represented by general formula (I). TIFF2026135961000008.tif4689 [R1 represents OH or CH3COO, R2 represents H, OH or OCH3, R3-5 represent H or CH3, and n represents 1 or 2. Here, when R2 is H, R5 represents H, and when R2 is OH or OCH3, R5 represents CH3.

Description

Technical Field

[0001] The present invention relates to moss killers.

[0002] Mosses are likely to occur in places with high humidity and poor sunlight, and occur on resin surfaces, concrete or brick surfaces, or metal surfaces that make up exterior walls, walls, fences, shutters, storage sheds, etc., as well as on any other material surfaces. The occurrence of mosses can damage the aesthetics of the surface and cause various problems in addition to deteriorating the paint.

[0003] For example, one type of moth, the narrow-winged moth, has a diet of eating moss in its larval stage. Since the narrow-winged moth in its larval stage is covered with poisonous body hair, if moss occurs on a house and the narrow-winged moth settles, it may cause problems in life.

[0004] In order to prevent such problems, the development of moss killers that can regularly kill the generated mosses has been carried out. Patent Document 1 and Patent Document 2 describe killing mosses using quaternary ammonium salts such as benzalkonium chloride, and they have already been put into practical use.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] Quaternary ammonium salts can corrode metals, causing rust and reducing their luster, and sprays containing quaternary ammonium salts typically include warnings against using them on metal surfaces such as sheds and shutters. Therefore, in view of the above circumstances, the objective of the present invention is to provide a moss killer that is highly effective in killing mosses and can also be used on metal surfaces. [Means for solving the problem]

[0007] The inventors of the present invention have diligently conducted research to solve the aforementioned problems and have completed the present invention. That is, the present invention includes a compound represented by general formula (I). TIFF2026135961000001.tif4689 Note that R1 represents OH or CH3COO, R2 represents H, OH or OCH3, R3~5 represents H or CH3, and n represents 1 or 2. Here, when R2 is H, R5 represents H, and when R2 is OH or OCH3, R5 represents CH3.

[0008] Furthermore, one embodiment of the moss killer according to the present invention comprises the above compound and a nonionic surfactant or an anionic surfactant.

[0009] Furthermore, one embodiment of the moss killer according to the present invention contains the above compound and the above surfactant in a ratio of 100:1 to 100:400 by weight.

[0010] Furthermore, in one embodiment of the moss killer according to the present invention, when it contains two or more nonionic surfactants, at least one of them contains polyoxyethylene hydrogenated castor oil.

[0011] Furthermore, by adding the moss-killing agent and insect-repellent component according to the present invention, it can be used as a moss-killing insect-repellent. [Effects of the Invention]

[0012] According to the present invention, it is possible to provide a moss killer that is excellent at killing mosses and can also be used on metals because it suppresses corrosion of metal surfaces.

[0013] The moss killer of the present invention targets aerial algae, mosses, and lichens, and is particularly effective against aerial algae. Examples of aerial algae include Chlorella communities, Apatococcus communities, Klebsormidium communities, and cyanobacteria communities represented by the genus Hassalia, which grow in urban areas, and the agent is especially effective against Chlorella communities, Apatococcus communities, and Klebsormidium communities. [Modes for carrying out the invention]

[0014] The moss killer according to the present invention is a compound represented by general formula (I). TIFF2026135961000002.tif4689[R1 represents OH or CH3COO, R2 represents H, OH or OCH3, R3~5 represents H or CH3, and n represents 1 or 2. Here, when R2 is H, R5 represents H, and when R2 is OH or OCH3, R5 represents CH3. Includes.

[0015] Examples of compounds represented by general formula (I) where R1 is OH include ethanol, 1-propanol, 2-propanol, and 3-methyl-1,3-butanediol, and examples of compounds represented by general formula (I) where R1 represents CH3COO include 3-methoxy-3-methylbutanol and 3-methyl-1,3-butanediol-1-acetate. Of these, it is preferable to include ethanol, 2-propanol, 3-methoxy-3-methylbutanol, or 3-methoxy-3-methylbutyl acetate, and it is more preferable to include ethanol, 2-propanol, or 3-methoxy-3-methylbutanol.

[0016] The moss killer of the present invention preferably further contains either a nonionic surfactant or an anionic surfactant. Including such a surfactant can improve the moss killer effect. The amount of surfactant is preferably 1 to 400 parts by mass, and more preferably 5 to 200 parts by mass, per 100 parts by mass of the compound represented by formula (I).

[0017] There are no particular restrictions on the nonionic surfactants mentioned above, but examples include polyhydric alcohol types such as glycerin fatty acid esters and sorbitol fatty acid esters, and polyethylene glycol types such as polyoxyethylene alkyl ethers, polyoxyethylene fatty acid esters, polyoxyethylene polyhydric alcohol fatty acid esters, polyoxyethylene alkylamines, and polyoxyethylene hydrogenated castor oil. The nonionic surfactants mentioned above may be used alone or in combination of two or more types. When two or more surfactants are used in combination, using polyoxyethylene hydrogenated castor oil as one of them provides excellent moss-killing effects.

[0018] There are no particular limitations on the anionic surfactant, but examples include sulfate esters such as higher alcohol sulfates and polyoxyethylene alkyl ether sulfates, sulfonates such as alkylbenzene sulfons, phosphate esters such as higher alcohol phosphates and polyoxyethylene alkyl ether phosphates. Furthermore, the anionic surfactant may be used alone or in combination of two or more types.

[0019] The moss killer of the present invention may further contain water and / or hydrocarbon solvents such as isoparaffin or normal paraffin, in addition to the compound represented by general formula (I) and the surfactant. Of these, water is preferred because it can improve the moss killing effect and allows for the design of a product that is not classified as a hazardous material.

[0020] When adding water or the above-mentioned hydrocarbon solvent, the compound represented by formula (I) is formulated so as to be 5 mass / volume percent or more, preferably 10 mass / volume percent or more, based on the total amount of the moss killer. The appearance of the prepared moss killer may be clear, or it may be suspended or cloudy.

[0021] The treatment means of the moss killer of the present invention is not particularly limited. For example, moss can be killed by spray-spreading in the form of a liquid agent or an aerosol agent at the location where moss is growing. Here, the killing in the present invention includes that the color of the moss itself changes, the moss withers, the moss is removed from the growth place and the base material of the generation is exposed, in addition to suppressing the growth of the moss and preventing preventing preventing preventing the occurrence of the moss.

[0022] The moss killer of the present invention can be treated on resin surfaces, concrete or tile surfaces, metal surfaces or glass surfaces, etc. that constitute outer walls, fences, shutters, storage houses, roofs, verandas, gateposts, tiles, streetlights, as well as utility poles, guardrails, tunnels, etc.

[0023] The moss killer of the present invention may appropriately contain additives such as insect repellents, fungicides, antimildew agents, preservatives, antioxidants, ultraviolet absorbers, light stabilizers, defoaming agents, rust preventives, etc., according to the above treatment targets. The blending amount of the additive is appropriately adjusted within a range that does not inhibit the moss killing effect.

[0024] For example, when an insect repellent is blended in the moss killer of the present invention, it becomes possible to control or repel pests other than the roof bug that fly to the above treatment targets. Examples of the insect repellent include pyrethroid compounds, carbamate compounds, neonicotinoid compounds, meta-diamide compounds, and oxadiazole compounds. Also, the insect repellent may be an essential oil.

[0025] Examples of the pyrethroid compounds include empenthrin, profluthrin, metofluthrin, transfluthrin, flamethrin, monfluorothrin, phenothrin, cyphenothrin, permethrin, cypermethrin, cyfluthrin, bifenthrin, fenpropatrin, tralomethrin, etofenprox, imiprothrin, allethrin, phthalthrin, prallethrin, resmethrin, and natural pyrethrins. The pyrethroid compounds are preferably included in the moss killer of the present invention in an amount of 0.01 to 2% by mass.

[0026] Examples of disinfectants include triazole compounds, organic iodine compounds, sulfamide compounds, dithiol compounds, thiophene compounds, phenolic compounds, thiocarbamate compounds, nitrile compounds, phthalimide compounds, pyridine compounds, pyrithione compounds, benzothiazole compounds, triazine compounds, guanidine compounds, urea compounds, imidazole compounds, isothiazolinic compounds, and nitroalcohol compounds. If treatment of metal surfaces is to be avoided, quaternary ammonium salt compounds and bisquaternary ammonium salt compounds may be used. [Examples]

[0027] The present invention will be further described below with reference to examples, but the present invention is not limited thereto.

[0028] [Test 1] As a moss killer, 2 mL of each compound shown in Table 1 was dropped onto a Klebsormidium colony growing on a concrete surface. The treated surface was then visually observed and evaluated according to the evaluation criteria shown below. The results are shown in Table 2.

[0029] [Table 1] TIFF2026135961000003.tif6792

[0030] (Evaluation Criteria) ×: No discoloration or wilting of mosses was observed even after 3 days following treatment. △: Discoloration or wilting of mosses was observed 3 days after treatment. However, exposure of the substrate could not be confirmed. ○: On the third day after treatment, in addition to the wilting of mosses, the substrate was found to be exposed. ◎: On the first day after treatment, in addition to the wilting of mosses, the substrate was found to be exposed.

[0031] [Table 2] TIFF2026135961000004.tif11165

[0032] [Exam 2] After preparing various formulations according to the formulations shown in Table 3, 2 mL was dropped onto Klebsormidium colonies growing on concrete ground, and evaluated based on the evaluation criteria described above.

[0033] [Table 3] TIFF2026135961000005.tif50167

[0034] [Exam 3] Each of the formulations shown in Table 3 (Examples 1, 2, 5, 8, and 14) was placed in a commercially available trigger spray bottle and sprayed 300 cm onto an iron gate, corrugated iron sheet, and aluminum shed, respectively. 2 Three sprays (3 mL) were applied to the specified area. A commercially available spray containing 2% by mass of benzalkonium chloride was also used as a comparison formulation, applied at the same dosage. The surface of the material was observed 7 days after treatment, and the results are shown in Table 4.

[0035] [Table 4] TIFF2026135961000006.tif2299 [Industrial applicability]

[0036] By using the moss killer of the present invention, it is expected that excellent removal effects against mosses will be observed while reducing the risk of corrosion to the substrate of the treated surface.

Claims

1. A moss killer containing a compound represented by general formula (I). [R1 represents OH or CH3COO, R2 represents H, OH or OCH3, R3-5 represent H or CH3, and n represents 1 or 2.] Here, when R2 is H, R5 represents H, and when R2 is OH or OCH3, R5 represents CH3.

2. The moss killer according to claim 1, further comprising one or more surfactants selected from the group consisting of nonionic surfactants and anionic surfactants.

3. The moss killer according to claim 2, characterized in that it contains the compound represented by the general formula (I) and the surfactant in a weight ratio of 100:1 to 100:

400.

4. The moss killer according to claim 2, characterized in that, when it contains two or more nonionic surfactants, at least one of them contains polyoxyethylene hydrogenated castor oil.

5. A moss-killing and insecticidal agent comprising a moss-killing agent and an insecticidal component according to any one of claims 2 to 4.

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