JP5643942B2 - Anti-mossicide and method of use - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a control agent for controlling algae and moss that grow and adhere to the lawn surface in various artificial turf facilities such as tennis courts and baseball stadiums that have been increasing in recent years. In addition, the present invention relates to a control agent for controlling algae and moss that grow and adhere to clay soil, sandboxes, parks, streets and other daily living environment soils such as school and kindergarten gardens.

  Various sports facilities such as baseball fields, soccer fields, golf courses, tennis courts, and athletic fields for track competitions, parks, sidewalks, playgrounds, etc. have turf laying facilities. In recent years, artificial grass has been widely used instead of natural grass. Artificial turf equipment includes a base material made of a synthetic resin pile such as nylon or polypropylene on the surface fabric, or sand or the like in the turf. Such an artificial turf has an excellent beauty and is easier to maintain and manage than natural turf. In addition, it takes a short time to resume use after rain, and the ground condition is highly uniform. In this way, artificial turf has many advantages in appearance, ground stability, and ease of maintenance, but plants such as mold, algae, and moss (hereinafter referred to as moss) flourish especially in the hot and humid season. In addition, the appearance is impaired and an unpleasant odor is generated.

  Known methods for controlling plants such as moss that grow on artificial turf include a method using a compound that generates chlorine and a method using a chlorine dioxide-based compound such as hypochlorite. Although these drugs have an effect of removing moss and the like, there are concerns about the influence on the human body and environmental pollution.

  On the other hand, mold and moss are also frequently generated on natural turf, impairing the appearance, causing unpleasant odors, and inhibiting turf growth. For natural turf, it is important to control mold and moss without inhibiting or withering turf growth. As such a control agent, stabilized chlorine dioxide or a surfactant is used as it is or adsorbed on a support (Japanese Patent Laid-Open Nos. 1-99559 and 1-145015). Furthermore, antibacterial and mossy prevention methods for natural turf and artificial turf using the above-mentioned chemicals are not sufficient due to the long-lasting effects, and it is generally difficult to maintain the antibacterial and moss prevention effects for more than two months.

JP-A-1-99559 Japanese Unexamined Patent Publication No. 1-145015

  As a result of various studies to solve the above-mentioned problems, the present inventors supported stabilized chlorine dioxide together with a cationic surfactant on an inorganic carrier, which is safe and can be applied to natural lawns and artificial lawns. We obtained knowledge that excellent antibacterial and moss-proofing effects can be obtained.

  The present invention provides an antibacterial moss remover comprising a stabilized chlorine dioxide and a cationic surfactant. More preferably, the stabilized chlorine dioxide and the cationic surfactant are used as the liquid antibacterial vegetative agent, or an inorganic granule in which this liquid is supported on an inorganic carrier is used in combination with the liquid antibacterial vegetative agent. In the present invention, the cationic surfactant preferably contains chlorine in its structure, and the surfactant is particularly preferably alkyltrimethylammonium chloride or benzalkonium chloride. In addition, the inorganic carrier used as the carrier for the antibacterial decontamination agent of the present invention is preferably weakly alkaline in water from the standpoint of the effect, and examples thereof include bentonite, volcanic gravel granules, sepiolite, and zeolite.

  The agent of the present invention prevents plant overgrowth such as mold and moss on natural turf and artificial turf, and can maintain the appearance of the lawn and prevent the generation of unpleasant odors. Moreover, there is no influence on the human body and environmental pollution, and the growth of natural turf is not hindered. The antibacterial and anti-mossic method of this drug lasts for a long period of 2 months or more. The antibacterial moss remover of the present invention is also effective against various fungi and viruses such as Escherichia coli, Salmonella, Vibrio parahaemolyticus, Staphylococcus aureus, Pseudomonas, spore bacteria, fungi, and influenza viruses.

FIG. 1 is a schematic cross-sectional view of a lawn to which an antibacterial moss remover is applied.

  The antibacterial moss remover of the present invention is formed by blending stabilized chlorine dioxide and a cationic surfactant. Stabilized chlorine dioxide and a cationic surfactant may be carried on an inorganic carrier, and a more excellent effect can be obtained by using an inorganic carrier containing such a liquid active ingredient together with the liquid active ingredient.

Stabilized chlorine dioxide Stabilized chlorine dioxide used in the antibacterial moss remover of the present invention is a known composition. Stabilized chlorine dioxide is a generic name for chlorite, a precursor with which chlorine dioxide is produced under a general name. Stabilized chlorine dioxide is produced by absorbing chlorine dioxide gas containing no chlorine in an aqueous solution of an alkaline peroxygen compound such as sodium percarbonate or sodium peroxide. Examples of such commercially available stabilized chlorine dioxide include Daiso Oslon (manufactured by Daiso Corporation).

Surfactant The cationic surfactant used in the present invention is preferably a surfactant containing chlorine in its structure. As such a surfactant, alkyltrimethylammonium chloride (formula 1) (for example, cetyltrimethylammonium chloride) or benzalkonium chloride (formula 2) is particularly preferable.
In the above formula, R ¹ is an alkyl group having 10 to 18 carbon atoms, preferably an alkyl group having 14 to 17 carbon atoms. R ² is an alkyl group having 10 to 18 carbon atoms, preferably an alkyl group having 12 to 14 carbon atoms. If the number of carbon atoms of the alkyl group is smaller than the above range, it is not preferable because, for example, the dissolution with a spreading agent (adhesive) is reduced in supporting the inorganic support. On the other hand, when the number of carbons exceeds the above range, antibacterial properties are reduced.

The blending ratio of the surfactant (in terms of pure component) is 2.0 to 8.0 parts by weight, preferably 3.0 to 5.0 parts by weight, with respect to 1 part by weight of chlorine dioxide. If the blending ratio of the surfactant is less than this range, the antibacterial properties against a wide range of bacterial species are lost.

Inorganic carrier In the present invention, an inorganic particulate material is used as the carrier for the antibacterial moss-free agent. These carriers are preferably weakly alkaline. Such a support made of weakly alkaline inorganic particles brings about a long-lasting antibacterial and moss-proofing effect. Examples of the inorganic carrier include clay minerals such as bentonite and sepiolite, silica sand, recycled Arakida soil, recycled glass aggregate, volcanic gravel granules, acid clay, isolite, zeolite, and the like.
With respect to inorganic carriers such as bentonite and volcanic gravel, the proportion (pure component) of chlorine dioxide and surfactant as active ingredients is 0.05 to 1.0 weight of chlorine dioxide with respect to 100 parts by weight of the inorganic carrier. Parts, preferably 0.1 to 0.5 parts by weight, and the surfactant is 0.1 to 3.0 parts by weight, preferably 0.2 to 1.5 parts by weight. If the amount of these active ingredients in the carrier is larger than this, the effect is not improved.

The pH of the inorganic carrier is preferably 7.7 or higher. The pH of the carrier is more preferably 8.3 or more, and most preferably 10.0 or more. The inorganic carrier impregnated with antibacterial moss remover can be safely sprayed on school grounds, etc., and can be used in places where moss grows under water. The prevention effect is also expected.
Here, the pH of the inorganic carrier is measured by a test according to the Japan Society for Geotechnical Engineering “JSF T211”. In this pH measurement method, the reciprocal of the molar concentration [H ⁺ ] (mol / l) of hydrogen ions in dispersed water in equilibrium with the inorganic support is expressed as a common logarithm. The pH shown in this way does not strictly indicate the acidity or alkalinity of the material itself, but reflects the interfacial chemical properties of the material.

  When the inorganic carrier is put into water by this measurement method and the pH is measured, the bentonite is 9 to 10 and the volcanic gravel is 7.4, both of which are considered solid bases. Bentonite is a mineral composed mainly of elements of Si, Al, Fe, Mg, Ca, Na, K, O, H, S, and is clayey, and volcanic gravel is mainly Si, Al, K, Na, Minerals such as O. Further, when minerals such as zeolite, isolite, diatomaceous earth, and sepiolite are used as the inorganic support, the effect lasts for about one week but does not last for more than two weeks.

Spreading agent When the inorganic carrier is impregnated and supported with the antimicrobial moss- free agent of the present invention, it is preferable to use a spreading agent (adhesive) in combination. By using the spreading agent, it is possible to further maintain the antibacterial moss-free effect over a long period of time. As such a spreading agent, it is a kind of naturally-derived polymer material conventionally used in competition grounds, and may be called a solidifying material, or an acrylic acid ester polymer aqueous emulsion, Oxyethylene resin esters, vinyl acetate resin materials, and the like may be used.

  Usually, spreading agents are (i) spreaders that lower the surface tension of the spray liquid and improve adhesion to crops and insects that are difficult to apply. (Ii) adjuvants that cover the surface of plants, pests, pathogens, etc. Wetting and penetration into the interior, (iii) Adhesive spreading agents (stickers) are those that improve the adhesion of drugs to objects and prevent the loss of wind and rain to improve the residual effect of drugs. . The spreading agent used in the present application is an adhesive spreading agent (iii), and an aqueous emulsion is preferable.

[Example 1]
(a) Preparation of antibacterial moss-free solution 40 g of 5% stabilized chlorine dioxide (pure content 2 g) and 30 g of 30% cetyltrimethylammonium chloride aqueous solution (pure content 6 g) are mixed in a container, and purified water is added to make the total amount. 1 liter was uniformly mixed to obtain an antibacterial moss-free solution.
(b) Loading of antibacterial moss solution on inorganic carrier 500 g of bentonite was taken in a container, and 500 g of the above antibacterial moss solution was gradually added while stirring until the surface of the carrier was not sticky. Next, it was dried at about 30 ° C. for 24 to 48 hours to produce a carrier to which an antibacterial moss solution was attached.

Test A (mold prevention effect)
The antibacterial moss-free agent (a) and the inorganic carrier (b) carrying the antibacterial moss remover were examined for the mold prevention effect on the artificial turf. Spraying and spreading were carried out on the entire surface of the artificial turf (surface area 20 cm ² ) as shown in FIG. 1 in the following three types of drug spraying forms (a) (a + b) (b).
(a) Spray with 5ml of antibacterial moss solution
(a + b) Spray 5ml of antibacterial moss-free solution + spray 5g of inorganic carrier
(b) Food spray “Nissui” Sabouraud Agar made by Nissui Pharmaceutical Co., Ltd. every 3 days, 5 days, 10 days, 15 days, 20 days, 30 days, and 45 days after spraying 5 g of the inorganic carrier. The medium was pressed against the artificial turf surface, and mold was cultured in the medium. The results are shown in Table 1.

Test B (moss control effect)
We selected a place where moss grows on the natural turf of the stadium, and investigated the moss control effect. 1 m ² of natural turf was sprayed and distributed in the following three types of drug spraying forms (a) (a + b) (b).
(a) Spray with 100 ml of antibacterial moss solution
(a + b) Spraying 100 ml of antibacterial moss-free solution + spreading 100 g of inorganic carrier
(b) Dispersing 100 g of the inorganic carrier The moss was killed or whether the growth of the moss could be suppressed over a long period of time was observed after spraying / spreading the drug at every time shown in Table 1. The results are shown in Table 1.

[Examples 2 to 5]
An antibacterial mosquito and an inorganic carrier carrying the same were produced in the same manner as in Example 1 except that the component composition shown in Table 1 was used. The test A and the test B were performed using these. However, the spraying form of the drug was (a + b) only, that is, the antibacterial moss solution and its inorganic carrier were used in combination. The results are shown in Table 1.

[Example 6] Carrying antibacterial moss solution on inorganic carrier (use of adhesive)
500 g of bentonite is put in a container, and 500 g of antibacterial moss solution having the composition shown in Table 1 and 1 g of an adhesive (acrylic ester polymer aqueous emulsion, NB coat manufactured by Showa Polymer Co., Ltd.) are added little by little while stirring. Stirring was continued until the surface of the carrier was not sticky, and dried in the same manner as in (b) to produce a carrier having an antibacterial moss solution added thereto.

[Table 1]

[Examples 7 to 13]
An antibacterial debriding agent and an inorganic carrier carrying the same were produced in the same manner as in Example 1 except that the inorganic particles shown in Table 2 were used as the inorganic carrier. Using these, test A and test B were performed in the same manner as described above. However, the spraying form of the medicine was carried out only for (a + b). The results are shown in Table 2.

[Table 2]

  The chemical | medical agent of this invention is used for prevention of plant overgrowth, such as mold | fungi, moss, etc. in natural turf and artificial turf, and prevents the appearance maintenance of a lawn and generation | occurrence | production of an unpleasant odor. The antibacterial and anti-mossic methods of this drug last for a long time.

Claims (6)

Along with stabilized chlorine dioxide , alkyltrimethylammonium chloride represented by the following formula (1) and benzalkonium chloride represented by the following formula (2):
(Wherein R ¹ represents an alkyl group having 10 to 18 carbon atoms , and R ² represents an alkyl group having 10 to 18 carbon atoms)
A moss- preventing moss remover comprising at least one cationic surfactant selected from
The moss-control moss remover of Claim 1 whose compounding ratio of a cationic surfactant is 2.0-8.0 weight part with respect to 1 weight part of chlorine dioxide .
The anti-mossic agent of claim 1 wherein the stabilized chlorine dioxide and the cationic surfactant are supported on an inorganic carrier having a pH of 7.7 or higher .
The moss-control mossicide according to claim 3 , wherein the inorganic carrier is bentonite, volcanic gravel granules, sepiolite or zeolite.
A moss-proofing agent characterized in that the moss-preventing moss-proofing agent according to claim 1, wherein the stabilized chlorine dioxide and the cationic surfactant are carried on an inorganic carrier having a pH of 7.7 or more, is spread on natural or artificial grass. Moss removal method.
Furthermore, the method of spraying the moss-preventing moss remover of Claim 1 is included.