JP7122865B2 - moss remover - Google Patents

Description

The present invention relates to a moss remover that removes undesirable mosses, particularly bryophytes, aerial algae and lichens. More specifically, the present invention relates to a moss remover that is highly effective in removing mosses growing on the surfaces of concrete, tiles, and the like such as exterior walls, verandas, and gateposts, and the surfaces of soil.

Generally, mosses tend to grow in places with high humidity and shade. If the conditions are right, they will appear everywhere and reproduce in various ways. For this reason, when mosses grow, the aesthetic appearance of the place where they grow is remarkably deteriorated, and there are problems such as poor growth of growing plants such as lawns, flowers, trees, etc. Therefore, it is necessary to remove them regularly. pests.
As a countermeasure, there are a method of physically removing the moss that has grown and a method of treating it with chemical substances to kill it, but the physical removal method by hand requires a lot of labor and time. , does not lead to permanent removal and is not an appropriate treatment method.
On the other hand, pesticides such as herbicides and growth inhibitors have been widely used as chemical substances used to remove moss. The effect is not obtained, and furthermore, there is concern about the burden on the environment, and there is a possibility that the growing plants at the application site will die, which is not preferable. In response to such a growing concern for safety, herbicides containing fatty acids such as pelargonic acid and salts thereof as active ingredients have been proposed (Patent Documents 1 to 4, etc.). Since these proposals use fatty acids and salts, which are also used as food additives, as active ingredients, the burden on the environment and humans and animals is reduced, but they have a strong unpleasant odor, so the actual user's feeling of use is I had a big problem. Moreover, the effect of removing moss by withering and the like is low, and there is also a problem in economic efficiency because the amount used per sprayed area is large.
Under these circumstances, there has been a demand for the development of an agent that has an excellent removal effect against mosses and that has a reduced burden on the environment, humans and animals.

Japanese Patent Application Laid-Open No. 2003-342104 JP 2013-216643 A JP 2014-091739 A JP 2011-195477 A

An object of the present invention is to provide a moss-removing agent containing pelargonic acid or a salt thereof as an active ingredient, which enhances the moss-removing effect and suppresses the unpleasant odor of the agent.

As a result of intensive research to solve the above problems, the present inventors have found that by combining pelargonic acid or a salt thereof, which alone has a low moss removal effect, and a phenol compound, moss can be removed even at a low dosage due to a synergistic effect. The present inventors have found that it has a high removal effect against , and have completed the present invention.
Conventionally, it has not been known that phenol compounds have an effect of removing moss, and moreover, the effect of removing moss of pelargonic acid or a salt thereof was low. However, it was newly discovered that by combining pelargonic acid or a salt thereof with a phenol compound, it is possible to kill mosses at an extremely low dosage and to suppress the odor peculiar to pelargonic acid at a low dosage. , which has solved the above problems.

Specifically, the gist of the present invention is as follows.
1. A moss remover comprising pelargonic acid or a salt thereof and a phenol compound as active ingredients.
2. 1. Characterized in that the phenolic compound is an alkyl-substituted phenol; The moss remover according to .
3. 1. The phenol compound is at least one of 4-isopropyl-3-methylphenol, 2-isopropyl-5-methylphenol, and 5-isopropyl-2-methylphenol. or 2. The moss remover according to .

The moss-removing agent of the present invention can be used as it is or after being diluted with water and directly sprayed onto places where mosses are growing, such as the outer walls of buildings, balconies, gateposts, and soil surfaces, to kill moss. can be removed more efficiently. In addition, this makes it possible to maintain the appearance of the place where the occurrence occurs.
In addition, since the moss remover of the present invention can remove mosses by withering or the like at an extremely low dose, there is no fear of chemical damage to surrounding growing plants, and it is safe with less burden on the environment and humans and animals. It has the characteristic of being highly resilient.
Furthermore, since the moss remover of the present invention has a low content of pelargonic acid or a salt thereof as an active ingredient, it can suppress the odor peculiar to pelargonic acid.

Hereinafter, the moss remover of the present invention will be described in detail.
The moss remover of the present invention contains pelargonic acid or a salt thereof and a phenol compound as active ingredients. In addition, the moss in the present invention is a generic term for bryophytes, aerial algae and lichens.
Pelargonic acid is a saturated fatty acid composed of 9 carbon atoms and is known as a compound having safe and rapid herbicidal activity. Salts of pelargonic acid include sodium salts, potassium salts, calcium salts, magnesium salts, ethanolamine salts, triethanolamine salts, and ammonium salts. A base may be added separately to form a salt in the removing agent. For example, pelargonic acid and triethanolamine or sodium hydroxide as a base can be added separately and used as triethanolamine or sodium salts. In the present invention, these bases may be referred to as pH adjusters. In the present invention, sodium hydroxide, triethanolamine, ammonia and potassium hydroxide are suitable as bases or pH adjusters.

The phenol compound of the present invention may be a compound based on a chemical structure in which one of the hydrogen atoms of benzene is substituted with a hydroxyl group, and among them, a phenol compound having no heteroatoms other than an oxygen atom is preferable. Examples of such phenol compounds include phenol and alkyl compounds such as cresol, ethylphenol, propylphenol, butylphenol, pentylphenol, hexylphenol, cyclohexylphenol, xylenol, methylethylphenol, methylisopropylphenol and di-t-butylphenol. Substituted phenols, catechol, resorcinol, dihydric phenols such as hydroquinone, alkyl ether derivatives of dihydric phenols such as methoxyphenol, trihydric phenols such as pyrogallol and phloroglucinol, alkyl ether derivatives of trihydric phenols such as methoxyresorcinol, salicylic acid and hydroxybenzoic acid alkyl ester derivatives such as methyl salicylate. Among these, alkyl-substituted phenols are preferred as the phenol compound of the present invention, and alkyl-substituted phenols substituted with one or two alkyl groups having 1 to 6 carbon atoms are more preferred, and in particular, alkyl groups having 1 to 6 carbon atoms are preferred. Disubstituted dialkyl-substituted phenols are preferred. As the alkyl-substituted phenol, isopropylmethylphenol is preferred, among which 4-isopropyl-3-methylphenol (IPMP), 2-isopropyl-5-methylphenol (thymol), 5-isopropyl-2-methylphenol (carbacrol) More preferably, it is one or more.

The moss remover of the present invention preferably contains pelargonic acid or a salt thereof as an active ingredient in an amount of 0.1% by weight or more and 5% by weight or less based on the total weight of the remover, and more preferably 0.2% by weight or more and 4% by weight. % or less, more preferably 0.3 wt % or more and 3 wt % or less.
Further, the moss remover of the present invention preferably contains less than 0.2% by weight of the phenol compound as an active ingredient in the total remover. The lower limit is preferably 0.001% by weight or more, more preferably 0.005% by weight or more, and particularly preferably 0.01% by weight or more, based on the total weight of the removing agent.
A combination of a given concentration of pelargonic acid or a salt thereof and a phenolic compound shows a specific improvement, i.e., the effect expected when simply applying the two agents alone, compared to their removal activity against mosses alone. It has been confirmed by the experiment described later that a far greater synergistic effect can be obtained. Although the details of the action mechanism by which the combination of the present invention exhibits synergistic moss-removing activity are unknown, the combination of the two compounds expresses mutual synergistic action at the action point level, resulting in such It is presumed that a remarkable effect can be obtained. Therefore, this synergistic effect is an effect that can be obtained for the first time by combining a predetermined concentration of pelargonic acid or a salt thereof with a phenolic compound, and this is a particularly remarkable effect that the inventors have confirmed for the first time through experiments. is.

The removal of mosses in the present invention means killing bryophytes, aerial algae and lichens, suppressing the growth of bryophytes, aerial algae and lichens, and removing bryophytes, aerial algae and lichens. This includes preventing these from occurring where clothing occurs.
As mentioned above, the bryophyte of the present invention is a generic term for bryophytes, aerial algae and lichens. The bryophytes included in the bryophytes of the present invention are land plants and non-vascular plants, also called bryophytes or bryophytes. Many of them are green, but there are also red and brown species, and they are a plant group classified into three large groups: mosses, mosses, and hornworts.
Examples of bryophytes included in the moss of the present invention include, for example, the Anthoceros family, the Anthoceros family, the Anthoceros family, which is represented by the Notothylas family; Bryophytes, bryophytes of the order Haplomitrium represented by the family Haplomitrium, Riccardia, Metzgeria, Pellia, Pallavicinia, Makinoa, and Pelliaceae (Blasia), Cavicularia, Treubia, Fossombronia, etc., Ptilidium, Neotrichocolea, Trichocolea, Lepidozia, Bazzania, Calypogeia, Cephalozia, Odontoschisma, Harpanthus, Lophocolea, Chiloscyphus, Scrophulariaceae (Marsupella), Jungermannia, Plagiochila, Schistochila, Scapania, Pleurozia, Radula, Goebeliella, Papaveraceae ( Nipponolejeunea), Frullania, Frullania, Jubula, Lejeunea, etc., Sphaerocarpus, etc. Targionia), Asterella, Reboulia, Conocephalum, Lunularia, Cyathodium, Clevea, Corsinia, Liverwort Marchantia, Dumortiera, etc., Riccia, Ricciocarpus, etc., Sphagnum Sphagnum mosses, mosses represented by the family Andreaea, mosses represented by the family Tetraphis, mosses represented by the family Archidium, family Ditrichum, moss Bryoxiphium, Dicranum, Trematodon, Campylopus, Leucobryum, etc. Mosquitoes of the order Syrrhopodon, Encalypta, Trichostomum, Barbula, Pottia, Grimmia, Rhacomitrium, etc. Hosta moss represented by, Discelium, Micromitrium, Funaria, Oedipodium, Tetraplodon, etc. (Schistostega) representative lycaenid mosses, Bryaceae, Pohlia, Bryum, Rhodobryum, Mnium, Rhizogonium, Tamaraceae ( Bartramia), Philonotis, Timmia, etc., Polygonum mosses represented by Orthotrichum, Macromitrium, etc., Rhacopilum, Sphagnum moss Family (Fontinalis), Climacium (Climacium), Pleurozium (Pleurozium), Hedwigia, Cyptodontopsis, Leucodon, Dozya, Trachypus, Pterobryum, Meteorium, Neckera, Otra moss mosses represented by Thamnobryum, Dolichomitra, etc.; Mosses, Fauriella, Fabronia, Leskea, Okamuraea, Thuidium, Miyabea, Amblystegium, Brachythecium, Entodon, Plagiothecium, Hypnum, Isopterygium, Rhytidium, Hylocomium, etc. Polytrichum (Polytrichum), Pogonatus, Atrichum, Bartramiopsis, etc. Examples include, but are not limited to, mosses such as mosses.

The aerial algae included in the mosses of the present invention mean only algae that live on land, and the algae that live in water or the sea are not included in the mosses of the present invention.
Examples of aerial algae included in the moss of the present invention include blue-green algae represented by the genus Nostalgia such as Nostoc jelly, the genus Phormidium, the genus Yuremo, the genus Krebsormidium, the genus Hibimidoro, the genus Chirimo, and the genus Kirindro. Examples include green algae represented by the genus Quistis, chlorella, genus Ikada, and genus Trichophyton, yellow-green algae represented by the genus Vulgare, and diatoms represented by the genus Prophylla. Furthermore, blue-green algae represented by Hassaria, which is a member of the genus Hassaria, which adheres to the surface of buildings such as block walls, Diplosphaera mucosa, which is a member of the genus Diplosphaera, green algae such as the genus Myrmecia, the genus Apatococcus, The genus Elliptochloris can be exemplified, but is not limited to these.

Lichens contained in the moss of the present invention include, for example, Ascolichens, which is a symbiotic organism with Ascomycetes, and Basidiomycetes, which is a symbiotic organism with Basidiomycetes ( Basidiolichenes) and the like can be exemplified. Among them, it grows on the surface of concrete and stone structures such as block walls and gravestones, for example, Prunus moss, Big moss, Box moss, Rock moss, Nisemoji moss, Core moss, Rock moss, Lime moss of the Solanaceae family, Coleoptera moss, etc. The moss-removing agent of the present invention is effective against fungal moss, moss moss, etc., moss moss belonging to the family Centipedes, and the like;

The moss remover of the present invention is formulated, and examples of formulation types include oil solutions, emulsions, wettable powders, flowable agents (suspensions in water, emulsions in water, etc.), microcapsules, Examples include powders, granules, tablets, liquids, sprays, and aerosols. Among them, atomization formulations such as sprays and aerosols, and dusting agents in which liquid agents are filled in a container with a watering can head are suitable as formulation types that can make the most of the moss removal performance of the present invention. be.
As one formulation type production example, pelargonic acid or a salt thereof and a phenol compound are dissolved in a solvent using a surfactant as necessary to prepare a solution (A solution), and this A solution is added to an appropriate amount of water. A method of mixing and stirring to obtain a moss remover that does not need to be diluted at the time of use can be mentioned. As water, tap water, ion-exchanged water, distilled water, filtered water, sterilized water, underground water, and the like are used.

Examples of liquid carriers used for formulation include alcohols (methanol, ethanol, isopropyl alcohol, butanol, hexanol, benzyl alcohol, ethylene glycol, etc.), ethers (diethyl ether, ethylene glycol dimethyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, propylene glycol monomethyl ether, tetrahydrofuran, dioxane, etc.), esters (ethyl acetate, butyl acetate, isopropyl myristate, ethyl lactate, etc.), ketones (acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, etc.), aromatics or aliphatic hydrocarbons (xylene, toluene, alkylnaphthalene, phenylxylylethane, kerosene, light oil, hexane, cyclohexane, etc.), halogenated hydrocarbons (chlorobenzene, dichloromethane, dichloroethane, trichloroethane, etc.), nitriles (acetonitrile, isobutyronitrile, etc.), sulfoxides (dimethylsulfoxide, etc.), heterocyclic solvents (sulfolane, γ-butyrolactone, N-methyl-2-pyrrolidone, N-ethyl-2-pyrrolidone, N-octyl-2-pyrrolidone, 1,3-dimethyl-2-imidazolidinone), acid amides (N,N-dimethylformamide, N,N-dimethylacetamide, etc.), alkylidene carbonates (propylene carbonate, etc.), vegetable oils (soybean oil, cottonseed oil, etc.) , plant essential oils (orange oil, hyssop oil, lemon oil, etc.), and water.

Nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants can be used as surfactants used in formulation. Examples of nonionic surfactants include polyoxyalkylene allylphenyl ether, polyoxyethylene alkyl ether, polyoxyethylene alkylphenyl ether, polyoxyethylene allylphenyl ether, polyoxyethylene styrylphenyl ether, polyoxyethylene alkylphenyl Ether formaldehyde condensate, polyoxyethylene-polyoxypropylene block polymer, polyoxyethylene-polyoxypropylene block polymer alkylphenyl ether, sorbitan fatty acid ester (e.g., sorbitan monooleate, sorbitan laurate), polyoxyethylene fatty acid ester, poly Oxyethylene sorbitan fatty acid ester, polyoxyethylene hydrogenated castor oil, polyethylene glycol fatty acid ester, polyethylene glycol fatty acid ether and the like. Anionic surfactants include, for example, alkyl sulfates, polyoxyethylene alkyl ether sulfates, polyoxyethylene alkylphenyl ether sulfates, polyoxyethylene benzyl (or styrylated) phenyl ether sulfates or polyoxyethylene-polyoxypropylene block Sodium, calcium or ammonium salts of polymeric sulfates; alkyl sulfonates, dialkyl sulfosuccinates, alkyl benzene sulfonates (e.g. calcium dodecylbenzene sulfonate), mono- or di-alkyl naphthalene sulfonates, naphthalene sulfonate formaldehyde Condensates, sodium, calcium, ammonium or alkanolamine salts of lignosulfonic acid, polyoxyethylene alkylphenyl ether sulfonic acid or polyoxyethylene alkyl ether sulfosuccinate; polyoxyethylene alkyl ether phosphate, polyoxyethylene mono - or di-alkyl phenyl ether phosphates, polyoxyethylene benzyl (or styryl) phenyl ether phosphates, sodium or calcium salts of polyoxyethylene-polyoxypropylene block polymer phosphates. Examples of cationic surfactants include quaternary ammonium salts, alkylamine salts, alkylpyridinium salts, alkyl oxides and the like. Amphoteric surfactants include, for example, alkylbetaines and amine oxides.

Examples of gaseous carriers used for formulation include butane gas, Freon gas, alternative Freons (such as HFO and HFC), liquefied petroleum gas (LPG), dimethyl ether, and carbon dioxide, and examples of solid carriers include clays. (kaolin, diatomaceous earth, bentonite, clay, acid clay, etc.), synthetic hydrated silicon oxide, talc, ceramics, other inorganic minerals (sericite, quartz, sulfur, activated carbon, calcium carbonate, hydrated silica, etc.), porous bodies, etc. are mentioned.

In addition to the phenolic compound, the moss remover of the present invention may contain conventional antifreeze agents, antifoaming agents, preservatives, antioxidants, thickeners, and the like that are used in preparation of formulations.
Antifreeze agents include, for example, ethanol, ethylene glycol, propylene glycol, ethyl cellosolve, butyl carbitol, 3-methyl-methoxybutanol, and the like.
Examples of defoaming agents include Antifoam E-20 (silicone emulsion, Kao Corporation, trade name), Antifoam C (Dow Corning Toray Co., trade name), Antifoam C emulsion (Dow Corning Toray Co., Ltd., trade name). product name), Rhosil 454 (Solvay, product name), Rhodesil Antifoam 432 (Solvay, product name), TSA730 (Tanak, product name), TSA731 (Tanak, product name), TSA732 (Tanak, product name) product name), silicone antifoaming agents such as YMA6509 (trade name, Tanac Co., Ltd.), and fluorine antifoaming agents such as Fluowet PL80 (trade name, Clariant Co., Ltd.).
Examples of antiseptics include Biohope and Biohope L (chemical name: organic nitrogen-sulfur compound, organic bromine-based compound), Bestcide-750 (chemical name: isothiazoline-based compound, 2.5-6.0%). , Preventol D2 (chemical name: benzyl alcohol mono (poly) hemiformal), PROXEL GXL (S) (chemical name: 1,2-benzisothiazolin-3-one, 20%), 5-chloro-2-methyl-4 -isothiazolin-3-one, 2-methyl-4-isothiazolin-3-one, 2-bromo-2-nitropropane-1,3-diol, potassium sorbate, sodium dehydroacetate and the like.
Antioxidants include tetrakis[methylene-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate]methane (Tominox TT, API Corporation, trade name/IRGANOX1010 or IRGANOX1010EDS, Ciba Japan Co., Ltd., trade name), butylated hydroxytoluene (BHT), butylated hydroxyanisole (BHA), propyl gallate, and vitamin E, mixed tocopherols, α-tocopherol, ethoxyquin and ascorbic acid. be done.
Thickeners include PVP K-15 (chemical name: polyvinylpyrrolidone), xanthan gum, polyvinyl alcohol, guar gum, carboxyvinyl polymer and the like.

The moss remover of the present invention is used in an amount such that the total amount of pelargonic acid or a salt thereof and a phenol compound is preferably 0.5 to 15 g, more preferably 1 to 5 g, per square meter of a place where moss is to be removed. disperse. The timing of application may be appropriately selected according to the occurrence of moss. As for the frequency of application, once the occurrence of moss is confirmed, it is recommended to apply once every 1 to 2 weeks. Application means are not particularly limited.

Places where the moss remover of the present invention is used include external wall surfaces, verandas, decks, gateposts, entrances, block walls, parking lots, tiles, bricks, stepping stones, building surfaces such as rooftops, lawns, gardens, and trees. Examples include ground, shrub land, the soil surface of golf courses, the surface of flowerpots, and the skin surface of trees, etc., but are not limited to these, and can be used as appropriate according to the purpose. be.

Hereinafter, the present invention will be described in more detail with formulation examples, test examples, etc., but the present invention is not limited to these examples.
First, an example of a test specimen for the moss remover of the present invention is shown. In the examples, parts means parts by weight unless otherwise specified.

<Moss removal effect confirmation test 1>
(1) Test Specimen Example 1
0.6 parts by weight of pelargonic acid, 0.01 parts by weight of 4-isopropyl-3-methylphenol (hereinafter referred to as "IPMP"), 0.85 parts by weight of triethanolamine, 20 parts by weight of ethanol, and deionized water are used. Then, a moss remover was prepared with a total amount of 100 parts by weight.
In Examples 2 to 10 and Comparative Examples 1 to 4, moss removers were prepared in the same manner as in Example 1 with formulations shown in Tables 1 and 2 below, and test specimens were obtained.
In addition, the following compounds were used in the preparation of the moss removers of the following examples and comparative examples.
Pelargonic acid: manufactured by Tokyo Chemical Industry Co., Ltd. IPMP: manufactured by Tokyo Chemical Industry Co., Ltd.

(2) Confirmation test method for moss removal activity Cut the wild moss (Mercules moss) to about 5 cm × 5 cm, put it in a petri dish with a diameter of 9 cm, and test specimens (Examples 1 to 10 and Comparative Example 1 to 4) were sprayed at 5 mL each. The moss removal effect was evaluated on a 5-point scale according to the following evaluation criteria, based on the area ratio of the withered state after 2 days. In addition, it has been confirmed that the 20% by weight ethanol aqueous solution has no effect on conure moss (breast liverworts).
[Evaluation criteria]
"4": 100% dead (complete dead)
"3": 80% or more and less than 100% withering "2": 50% or more and less than 80% withering "1": 30% or more and less than 50% withering "0": Less than 30% withering Composition of the above test specimen and the evaluation results are summarized and shown in Tables 1 and 2.

(3) Confirmation of synergistic effect Evaluation of synergistic moss removal activity obtained by combining pelargonic acid or its salt and phenolic compound is performed when pelargonic acid or its salt and phenolic compound are used alone (Comparative Example 1 From the evaluation results of 1 to 4), the evaluation results of the test specimens of Examples 1 and 6 were estimated by the following formulas, and the actual evaluation results were compared with them. When the actual evaluation result is larger than the estimated evaluation result, it can be said that the moss removal activity is enhanced from the algebraic sum when each is used alone, so it was evaluated that a synergistic effect was recognized.

Calculation formula: Estimation of evaluation result = C _A × x/100 + C _B × y/100
_CA : Evaluation results when pelargonic acid was used alone (Comparative Example 1 or Comparative Example 3) CB: Evaluation results when a phenol compound was used alone (Comparative Example 2 or Comparative Example 4) x: _Mosses Proportion of pelargonic acid in removal active ingredients (% by weight)
y: Proportion of phenolic compound in moss-removing active ingredients (% by weight)
According to the above formula, the estimated evaluation results of Example 1 and Example 6 are 1 and 2, respectively. Since the actual evaluation results of Examples 1 and 6 are 4, respectively, the moss-removing agent of the present invention has synergistic moss-removing activity by combining pelargonic acid or a salt thereof and a phenol compound. was obtained.
In addition, from the evaluation results of Examples in Tables 1 and 2, especially the results of Example 1, which has the lowest content of moss-removing active ingredients, by combining pelargonic acid or a salt thereof and a phenolic compound, an extremely low dosage In, it became clear that an excellent moss removal effect can be obtained.
These effects exhibited by the moss remover of the present invention are particularly remarkable effects that the present inventors have confirmed for the first time through many experiments.

<Moss removal effect confirmation test 2>
(1) Test Specimen Example 11
1.2 parts by weight of pelargonic acid, 0.1 parts by weight of 2-isopropyl-5-methylphenol (hereinafter referred to as "thymol"), 1.7 parts by weight of triethanolamine, 20 parts by weight of ethanol and deionized water are used. Then, a moss remover was prepared with a total amount of 100 parts by weight.
Example 12
1.2 parts by weight of pelargonic acid, 0.1 parts by weight of 5-isopropyl-2-methylphenol (hereinafter referred to as "carbacrol"), 1.7 parts by weight of triethanolamine, 20 parts by weight of ethanol and deionized water was used to prepare a moss remover with a total amount of 100 parts by weight.
In Comparative Examples 5 and 6, test specimens were obtained by preparing moss-removing agents according to the formulations shown in Table 3 below, and used together with Comparative Example 3 of "Test 1 for confirmation of moss-removing effect."
In addition, the following compounds were used in the preparation of the moss removers of the following examples and comparative examples.
Thymol: manufactured by FUJIFILM Wako Pure Chemical Industries, Ltd. Carvacrol: manufactured by FUJIFILM Wako Pure Chemical Industries, Ltd.

(2) Confirmation test method for moss removal activity Cut the wild moss (Mercules moss) to about 5 cm × 5 cm, put it in a petri dish with a diameter of 9 cm, and test specimens (Examples 11, 12 and Comparative Example 3 , 5, 6) were sprayed at 3 mL each. The moss-removing effect was evaluated on a 5-point scale according to the evaluation criteria for (2) moss-removing activity in "Moss-removing effect confirmation test 1" from the area ratio of the withered state after 4 days. In addition, it has been confirmed that the 20% by weight ethanol aqueous solution has no effect on conure moss (breast liverworts).
Table 3 summarizes the composition and evaluation results of the above test specimens.

(3) Synergistic effect confirmation By the evaluation method based on the same calculation formula as in "Moss removal effect confirmation test 1", the moss remover of the present invention (Examples 11 and 12) is composed of pelargonic acid or a salt thereof and IPMP It was found that synergistic moss removal activity can be obtained by combining with thymol or carvacrol, which are phenolic compounds other than. That is, the moss remover of the present invention exhibits a particularly remarkable effect.

<Moss removal effect confirmation test 3>
(1) Test Specimen Example 13
Using 1.2 parts by weight of pelargonic acid, 0.1 parts by weight of IPMP, 1.7 parts by weight of triethanolamine, 20 parts by weight of ethanol, and deionized water, a moss remover was prepared in a total amount of 100 parts by weight. .
(2) Confirmation test method for moss-removing activity Naturally growing nostoc jellyfish (aerial algae) was placed in a petri dish with a diameter of 9 cm, and 5 mL of the test sample (Example 13) was sprayed.
Since it was difficult to collect wild moss (lichen), 5 mL of the test sample (Example 13) was sprayed in the place where it grows wild.
Each moss-removing effect was evaluated on a scale of 5 according to the above-mentioned "Moss-removing effect confirmation test 1" (2) Evaluation criteria for moss-removing activity, based on the area ratio of the withered state after 2 days. In addition, it has been confirmed that the 20% by weight ethanol aqueous solution has no effect on star jelly (aerial algae) and big moss (lichen).
Table 4 shows the evaluation results.

From the results in Table 4, the test specimen (Example 13), which is a specific example of the moss remover of the present invention, is not only for the liverwort moss moss, but also for the aerial algae Nostoc jellies and the lichen Sodium moss. was also found to be excellent in the removal effect by withering. That is, the moss remover of the present invention has a broad-spectrum removal activity against bryophytes, aerial algae and lichens.

<Odor confirmation test of moss remover>
An odor confirmation test was conducted using the test sample of Example 8 of the above-mentioned "moss removal effect confirmation test 1".
The test sample of Example 8 was sprayed on artificial turf at a spraying rate of 100 ml/m ² , and the odor of pelargonic acid at the end of spraying was evaluated by 6 panelists on a 5-point scale according to the following evaluation criteria.
[Evaluation criteria]
“1”: Strong odor “2”: Weak odor “3”: Slight odor “4”: Almost no odor “5”: No odor The average value of the evaluation results of each panelist was 3.3.
From this result, the moss remover of the present invention, despite containing pelargonic acid with a strong odor, can suppress the content of pelargonic acid low due to the synergistic effect with the phenol compound. It was found that the odor as a remover was not a problem.

<Safety confirmation test for cultivated plants>
According to the following procedure, the presence or absence of chemical damage to cherry tomatoes was investigated, and a test was conducted to confirm the safety of the moss remover of the present invention.
The test specimen of Example 13 was sprayed on a mini tomato seedling (5-leaf development stage) planted in a 9 cm pot, and the same amount as in the above "Moss removal effect confirmation test 2" was sprayed, and after drying, 6 days later, each leaf. The presence or absence of phytotoxicity was investigated. As a result, it was confirmed that the moss remover of the present invention does not cause phytotoxicity to cherry tomatoes.

The moss remover of the present invention is a combination of pelargonic acid or a salt thereof, which alone has a low moss removal effect, and a phenol compound such as IPMP, thymol, carvacrol, etc., resulting in a synergistic effect at a low dosage. It is highly effective in removing mosses such as mosses such as moss, aerial algae, Nostoc jellies, and lichens. Moreover, the moss remover of the present invention can suppress the odor peculiar to pelargonic acid at a low dose.
In addition, there is no concern about phytotoxicity to surrounding growing plants, and since the content of active ingredients is extremely low, there is little burden on the environment and humans and animals, and the safety is high. It has the feature that it can be easily sprayed in places where moss is growing.

Claims (1)

A moss remover comprising pelargonic acid or a salt thereof and 4-isopropyl-3-methylphenol as active ingredients.