Fine particle adhesion inhibitor

Abstract

To provide a simple and highly safe anti-adhesion agent for fine particles, which can be applied or sprayed on hair or clothing to prevent adhesion and adsorption of fine particles, such as pollen and PM2.5, to the hair or clothing, and is more effective than the conventional one.SOLUTION: The anti-adhesion agent for fine particles of the present invention comprises polylysine and an auxiliary agent selected from the group consisting of organic and inorganic acids, thereby solving the above problem.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a fine particle adhesion inhibitor, specifically to a fine particle adhesion inhibitor that can prevent fine particles such as pollen and PM2.5 from adhering to and being adsorbed onto hair, clothing, etc. [Background technology]

[0002] Hay fever is caused by allergens such as cedar pollen, cypress pollen, ragweed pollen, rice pollen, etc. Recently, the condition has tended to occur throughout the year, rather than just during the period from February to April when cedar pollen is released, and the number of patients is on the rise. However, there is currently no established treatment for hay fever, and hay fever sufferers protect themselves by wearing masks, glasses, goggles, hats, etc. to prevent pollen from coming into contact with their eyes, nose, and mouth when they go outside. However, when they come back indoors, they bring in pollen that has adhered to their clothes and bodies while outdoors, which can cause the onset of the disease.

[0003] Therefore, as a preventative measure, one possible way to maintain an environment that keeps pollen as far away as possible is to, for example, brush off your clothes and hair to remove any pollen that may be on them before entering the house after returning home.

[0004] However, it is time-consuming to brush off the pollen from clothes every time, and even if you brush off the pollen from clothes, it is often not a sufficient measure.

[0005] For example, Patent Document 1 (Japanese Patent No. 4562585) discloses a pollen adsorption inhibitor containing a polymer containing, as a monomer, a monomer unit having a specific zwitterionic group.

[0006] In addition to pollen, other harmful substances that can adhere to clothing and affect the human body include PM2.5 (fine particulate matter) and house dust.

[0007] PM2.5 refers to particles with a diameter of 2.5 μm or less suspended in the air, and in recent years has been attracting attention as an indicator of air pollution. Because PM2.5 particles are so small, they can easily penetrate deep into the lungs, raising concerns about their impact on health, including respiratory diseases such as asthma and bronchitis, an increased risk of lung cancer, and effects on the circulatory system.

[0008] Under these circumstances, there is a need for a simpler and more effective means of preventing harmful fine particles such as pollen and PM2.5 from adhering to and being absorbed into hair, clothing, etc. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Patent No. 4562585 Summary of the Invention [Problem to be solved by the invention]

[0010] The present invention aims to provide a simple and safe fine particle adhesion prevention agent that can be applied or sprayed to hair, clothing, etc. to prevent the adhesion or adsorption of fine particles such as pollen and PM2.5 to said hair, clothing, etc., and that is more effective than conventional fine particle adhesion prevention agents. [Means for solving the problem]

[0011] The present inventors have discovered that an excellent effect of preventing the adhesion of fine particles, including pollen, can be achieved by using polylysine in combination with an organic acid or inorganic acid as an auxiliary. Patent Document 1 describes that polylysine alone is only weakly effective, so it was unexpected that combining polylysine with an auxiliary can provide an even better effect than before. Both polylysine and organic acids are ingredients that can be used in foods, and have been confirmed to be reliable and highly safe. Therefore, it has been discovered that a simple and highly safe fine particle adhesion inhibitor can be provided by using polylysine in combination with an auxiliary.

[0012] The present invention is based on these findings.

[0013] That is, the present invention provides the following inventions.

[0014] <1> A fine particle adhesion preventing agent comprising polylysine and an auxiliary selected from the group consisting of organic acids and inorganic acids.

[0015] <2> The auxiliary agent is an organic acid. <1> Anti-adhesion agent for fine particles.

[0016] <3> The auxiliary agent is contained in an amount of 0.2 mass % or more based on the total amount of the scavengers. <1> or <2> Anti-adhesion agent for fine particles.

[0017] <4> The above-mentioned composition contains polylysine in an amount of 0.01% by mass or more based on the total amount of the above-mentioned anti-smudge agent. <1> ~ <3> An anti-adhesion agent for fine particles.

[0018] <5> The fine particles are pollen or PM2.5. <1> ~ <4> An agent for preventing adhesion of fine particles. [Effects of the Invention]

[0019] According to the present invention, a simple and safe fine particle adhesion preventive agent is provided that can be applied or sprayed to hair, clothing, etc. to prevent the adhesion or adsorption of fine particles such as pollen and PM2.5 to such hair, clothing, etc., and is more effective than conventional fine particle adhesion preventive agents. The components used in the fine particle adhesion preventive agent of the present invention have also been used in cosmetics and food products, providing consumers with a sense of security and confirming their safety. Furthermore, this fine particle adhesion preventive agent is expected to have a similar effect in preventing not only pollen and PM2.5 but also fine particles such as house dust. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a graph showing the results of Experiment 2 of the example. [Figure 2] 10 is a graph showing the results of Experiment 3 of the example. [Figure 3] 10 is a graph showing the results of Experiment 4 of the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, an embodiment of the present invention will be described.

[0022] Fine particle adhesion inhibitor As described above, the fine particle adhesion inhibitor according to the present invention comprises polylysine and an auxiliary selected from the group consisting of organic acids and inorganic acids.

[0023] Here, the fine particle adhesion inhibitor refers to a fine particle adhesion inhibitor composition, which can also be referred to as a fine particle adsorption inhibitor or a fine particle adsorption inhibitor composition. Here, "prevention of fine particle adhesion" means being able to prevent airborne fine particles such as pollen and PM2.5 from adhering to and adsorbing onto hair, clothing, etc. The fine particle adhesion inhibitor is expected to exert this fine particle adhesion prevention effect by being applied or sprayed onto hair, clothing, etc. In the present invention, "fine particles" refers to fine particles that float in the air and can adhere to or be adsorbed onto hair, clothing, or the human body, and includes pollen, PM2.5, house dust, etc. Preferably, the fine particles are pollen and PM2.5, and more preferably pollen.

[0024] Furthermore, in the present invention, the fine particle adhesion inhibitor can prevent not only pollen and PM2.5 but also harmful fine particles such as house dust from adhering to and being adsorbed onto hair, clothing, etc.

[0025] Polylysine is a low-molecular-weight natural homopolymer of lysine, an essential amino acid, and has been used as a natural preservative in foods, cosmetics, etc. For this reason, it has been confirmed to be highly safe.

[0026] The auxiliary agent used in the present invention is selected from the group consisting of organic acids and inorganic acids. Here, examples of organic acids include citric acid, etidronic acid, malic acid, succinic acid, lactic acid, fumaric acid, tartaric acid, gluconic acid, benzoic acid, and fatty acids. Examples of inorganic acids include phosphoric acid, hydrochloric acid, and sulfuric acid. Preferred auxiliary agents are organic acids, more preferred are citric acid and etidronic acid, and even more preferred is citric acid.

[0027] In the fine particle adhesion preventing agent of the present invention, the content of polylysine is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, based on the total amount of the fine particle adhesion preventing agent.

[0028] In the fine particle adhesion preventing agent of the present invention, the content of the auxiliary is preferably 0.2 mass % or more, more preferably 0.3 mass % or more, based on the total amount of the fine particle adhesion preventing agent.

[0029] The fine particle adhesion preventive agent of the present invention may contain water as the remaining component. The water that can be used here is not particularly limited as long as it is water that can be used in ordinary liquid cleaning compositions, and examples of the water that can be used include commonly used tap water, purified water, ion-exchanged water, pure water, ultrapure water, and distilled water.

[0030] The fine particle adhesion inhibitor of the present invention can appropriately use known additives as optional components within the range that does not impair the effects of the present invention.As additives, for example, solubilizers and stabilizers such as lower alcohols such as ethanol, isopropanol, butyl cellosolve, and methyl carbitol, glycols such as p-toluenesulfonate, xylenesulfonate, propylene glycol, ethylene glycol, and polyethylene glycol, surfactants such as polysorbate, pH buffers, and further, hand roughness inhibitors, colorants, fragrances, and preservatives such as benzoates can be used.

[0031] Furthermore, other antibacterial components may be added to the fine particle adhesion inhibitor of the present invention.

[0032] The formulation of the fine particle adhesion inhibitor of the present invention is not particularly limited and may be any formulation such as a spray, lotion, etc. From the viewpoint of usability and convenience, it is preferably used as a spray.

[0033] When used as a spray, water, a lower alcohol (e.g., ethyl alcohol), or, if desired, an aqueous solution containing a volatile oil can be used as the concentrate. When used as an aerosol spray, the concentrate containing the polymer is pressurized and sealed in an aerosol container together with a propellant. As the propellant, liquefied petroleum gas (LPG), primarily composed of propane, butane, and isobutane; dimethyl ether (DME); and compressed gases such as carbon dioxide and nitrogen gas can be used alone or in mixtures. Among these, liquefied petroleum gas (LPG), dimethyl ether (DME), and the like are preferably used.

[0034] As a method of using the fine particle adhesion preventive agent of the present invention, for example, in the case of a spray, it can be sprayed in advance on objects (clothing, hair, etc.) to which the adhesion or adsorption of fine particles is to be prevented, thereby actively preventing the adhesion or adsorption of fine particles to these objects. As a result, while, for example, conventional methods of preventing the introduction or intrusion of fine particles into the home have been used, such as shaking off the clothes after returning home from going out to remove the fine particles adhering to the clothes before entering the home, or vacuuming the futon after hanging it out to dry to suck up the fine particles, by spraying the fine particle adhesion preventive agent of the present invention in advance on clothes, futon, etc., it is possible to prevent the adhesion or adsorption of fine particles, and thus easily and conveniently prevent the introduction or intrusion of fine particles into the home.

[0035] The fine particle adhesion preventing effect of the fine particle adhesion preventing agent of the present invention is highly durable, while it can be easily removed by washing, etc. It is preferable to spray or apply it to areas that are likely to come into contact with fine particles such as pollen or PM2.5 (for example, the outerwear of clothing).

[0036] The present invention will be described in detail below with reference to the following examples, but the present invention is not limited thereto.

[0037] Experiment 1: Examination of auxiliary agents (1-1) Materials and Methods A fine particle adhesion inhibitor having the following formulation was prepared. Polylysine 0.05% by mass Auxiliary agent (shown in Table 1) 0.10% by mass Purified water remainder

[0038] A 0.1 g sample of the prepared fine particle adhesion inhibitor was impregnated into a Prowipe (pulp). A stirring rod (made of polyacetal) was rubbed with the agent 100 times, and then the stirring rod was attached to fine particles of pollen (cedar pollen, ITEA Co., Ltd.) (3 cm, 10 seconds). The work was carried out using neoprene rubber in an environment prone to static electricity (approximately 24°C, approximately 45% humidity).

[0039] The weight of the entire stirring rod after the pollen had adhered to it was measured, and this was repeated five times to calculate the average value.

[0040] Using the obtained average value, the weight of the stirring rod was measured before and after the pollen was attached, and the difference between the weights was calculated to obtain the amount of attached fine particles (g).

[0041] Next, the fine particle rejection rate (%) was calculated based on the following formula from the amount of fine particles attached to a control sample (no sample) to which pollen was attached in the same manner as above except that no sample was used, and the amount of fine particles attached to each sample in which pollen was attached to a stirring rod soaked in each sample. Fine particle blocking rate (%) = 100 - amount of fine particles attached to each sample / amount of fine particles attached to no sample x 100 The higher the fine particle adhesion prevention rate, the higher the effect of preventing fine particle adhesion.

[0042] (1-2) Results The results are shown in Table 1. The results showed that, among the organic acids, citric acid showed the most excellent effect of preventing the adhesion of fine particles.

[0043] [Table 1]

[0044] Experiment 2: Examination of auxiliary agent blending amount (2-1) Materials and Methods The amount of acid used was examined to see how the effect of combining polylysine with an acid to prevent adhesion of fine particles was examined by appropriately changing the amount of acid used from Experiment 1. Citric acid was selected as the acid, taking into account its use in cosmetics and food.

[0045] An experiment was carried out in the same manner as in Experiment 1 above, except that citric acid was used as an auxiliary agent and the amount of citric acid added was gradually changed from 0 to 1.0%.

[0046] (2-2) Results The results are shown in the graph in FIG. It was found that increasing the amount of citric acid strengthened the effect of preventing the adhesion of fine particles up to at least 0.20% by mass. However, when the amount of citric acid added was in the range above 0.2% by mass, the effect did not strengthen any further and remained constant.

[0047] Experiment 3: Examination of polylysine content (3-1) Materials and Methods An experiment was carried out in the same manner as in Experiment 1 above, except that the amount of polylysine added was varied from 0 to 1.0%.

[0048] (3-2) Results The results are shown in the graph of FIG. It was found that the effect of preventing adhesion of fine particles increased with increasing amount of polylysine, at least up to about 0.01% by mass. However, when the amount of polylysine was higher than 0.01% by mass, the effect did not increase any further and remained constant.

[0049] Experiment 4: Examination of the effect on PM2.5 (4-1) Materials and Methods The test samples were (i) to (iii) below, and instead of attaching pollen to a stirring rod, a yellow sand / PM2.5 simulant (Kanto loam (baked), JIS test powder type 1-11 (average particle size: 2.5 μm: Japan Powder Technology Association)) was used. The test was conducted in the same manner as in Experiment 1.

[0050] <Test sample> (i) Purified water only (ii) The fine particle adhesion inhibitor according to the present invention Polylysine 0.70% by mass Citric acid 0.30% by mass Sodium citrate 0.30% by mass Polysorbate 80 0.40% by mass Propylene glycol 25.0% by mass water remainder (iii) Commercially available product (Allerscreen EX (trade name), spray, manufactured by Company S)

[0051] (4-2) Results The results are shown in the graph of FIG. It was confirmed that the fine particle adhesion prevention agent of the present invention has an excellent effect of removing PM2.5, that is, an excellent effect of preventing the adhesion of fine particles.

Claims

1. A fine particle adhesion inhibitor comprising polylysine and an auxiliary selected from the group consisting of organic acids and inorganic acids, the organic acid is citric acid, The auxiliary is contained in an amount of 0.2 mass% or more based on the total amount of the fine particle adhesion preventive agent, By applying it to the object in advance, it gives the object an effect of repelling the fine particles, The shading effect is expressed by the following formula (1): [Equation 1] This is indicated by the fine particle blocking rate calculated by The fine particles are pollen or PM2.

5. Fine particle anti-adhesion agents (except those containing a combination of 15% by weight of ethanol and 1.0% by weight of phthalic acid).

2. 2. The fine particle adhesion preventing agent according to claim 1, comprising polylysine in an amount of 0.01% by mass or more based on the total amount of the fine particle adhesion preventing agent.

3. A fine particle adhesion prevention agent as described in claim 1 or 2, wherein the object is hair or clothing.

4. The fine particle adhesion inhibitor according to any one of claims 1 to 3, wherein the fine particles are PM2.5.

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