Slow-release fly repellent as well as preparation method and application thereof
By introducing emulsifiers and chitosan in the flood repellent agent, a stable plant essential oil mixture is formed, the problem of poor holdings and stability of existing flood repellent products is solved, and the uniform dispersing and dispersing of the mitter -release flood drive agent is realized Long -term efficacy ensures the safety and environmental protection of the product.
Patent Information
- Application Number
- CN202411564600.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-01-21
AI Technical Summary
Existing fly repelling products have poor efficiency and safety due to environmental factors, and their safety is questioned. Products composed of plant essential oils have insufficient stability and sustained medicinal efficacy, which can easily lead to pollution and environmental impact.
Develop a mitter -release flood repellent, adopts natural plant essential oil as the flood -repellent component, and the introduction of emulsifiers and chitosan to form a stable mixture to ensure that the ingredients are evenly dispersed and applied through spraying Effectiveness and avoid pollution.
It achieves the uniform dispersion and stable existence of the fly repellent ingredients, prolongs the duration of the fly repellent effect, improves the safety and effectiveness of the product, and avoids pollution and environmental impact.
Smart Images
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Abstract
Description
Technical Field
[0001] The invention relates to the field of daily chemical products, and in particular to a slow-release fly repellent and a preparation method and application thereof. Background Art
[0002] Houseflies are holometabolous insects of the genus Muscidae in the order Diptera. They are widely distributed throughout the world and are an important type of global health pest. Houseflies are commonly found in poorly sanitary environments such as garbage, kitchens and feces. They can spread a variety of infectious pathogens and threaten human health and life. At present, the products on the market for controlling houseflies mainly include aerosols, fly incense, poison baits and fly repellent lamps. The fly-killing ingredients in housefly control products are mainly pyrethroid chemicals. Houseflies have strong reproductive capacity and good adaptability, and have developed strong drug resistance. In indoor environments, repelling flies can better protect people's health and environmental safety. The safety, repellent effect and long-term effectiveness of fly repellent products such as fly incense and fly repellent boxes have become the key points for consumers to decide whether to choose them. The continuous burning of fly incense and the long-term effectiveness of fly repellent boxes are greatly affected by environmental factors, and at the same time, it is easy for consumers to have doubts about the safety of the products, hindering the sales and promotion of the products.
[0003] It is particularly important to choose a safe and easy-to-use fly repellent product. At the same time, in response to the green, safe and sustainable development advocated by the country, some researchers have proposed fly repellent products with plant essential oils as the main fly repellent ingredients. However, existing fly repellent products with plant essential oils as fly repellent ingredients either use a variety of plant essential oils with pungent odors to compound in order to pursue fly repellent effects. On the one hand, some plant essential oils used for compounding are not easy to obtain, and the preparation process is time-consuming and labor-intensive. On the other hand, too much plant essential oil is compounded, resulting in a complex and irritating taste of the fly repellent as a whole, reducing the user's sensory experience. In addition, because plant essential oils themselves are oil phases and have high volatility, they are not easy to coexist stably with other ingredients in the fly repellent, and the duration of the drug effect is short. If too many emulsifiers and solvents are added, the fly repellent will contain too many chemical components that are difficult to decompose, which will easily cause certain impacts on water and soil in the environment after use. At the same time, considering that the fly repellent is used indoors or in high-end places, the indoor air freshness and consumer sensory experience must also be taken into account; if it is a feed warehouse or food storage area, the application method must be considered. The existing method of directly mixing and sprinkling on the outside of feed or food to repel flies may cause feed and food contamination once the fly repellent product is contaminated. Summary of the invention
[0004] In view of the above problems, the present invention provides a sustained-release fly repellent, which uses plant essential oils from natural sources as effective fly repellent ingredients and can be directly sprayed on the ground, a desktop or indoor air in an area waiting to be repelled. The sustained-release fly repellent has good overall dispersibility and uniform and stable ingredients.
[0005] In order to achieve the above object, the present invention provides a slow-release fly repellent, comprising the following raw materials in percentage by mass:
[0006] Fly repellent ingredient 0.1-0.2%
[0007] Emulsifier 0.25-0.35%
[0008] Solvent residue;
[0009] The fly repellent ingredient comprises plant essential oil.
[0010] During the research, the inventors found that in order to avoid the possibility of traditional fly repellents causing pollution by being mixed on the ground or around objects, a better way is to develop a product that can be used to repel flies by spraying. However, the requirements for performance of fly repellents suitable for spraying and fly repellents suitable for being left to stand after being thrown are quite different. The main considerations for products that are left to repel flies are whether they have good volatility and whether they can be released relatively evenly, while the products suitable for spraying to repel flies mean that the fly repellent as a whole needs to have uniform ingredients, no stratification, and good uniformity. In other words, the fly repellent ingredients need to have good dispersibility in the fly repellent as a whole. At the same time, because the present invention aims to use plant essential oil as the main fly repellent ingredient, and the plant essential oil itself is an oil phase, which is difficult to stably coexist with the water phase system, the inventors propose to use the above raw materials to prepare a sustained-release fly repellent, and introduce an emulsifier to compound with the fly repellent ingredients so that the plant essential oil has good dispersibility in the fly repellent as a whole and the fly repellent as a whole has a uniform ingredient.
[0011] In one embodiment, the emulsifier includes at least one of emulsifier 2201 and emulsifier 0201B.
[0012] Using the above ingredients as emulsifiers can better disperse the plant essential oils.
[0013] In one embodiment, the emulsifier includes emulsifier 2201 and emulsifier 0201B, and the mass ratio of the emulsifier 2201 to the emulsifier 0201B is 1:(0.8-1.2).
[0014] Using the above-mentioned mass ratio of ingredients as an emulsifier can not only better disperse the plant essential oil, but also better adapt to the subsequently added aqueous solvent to achieve better dilution, so that the fly repellent ingredients can be stably and evenly present in the fly repellent as a whole, which is suitable for the spraying fly repellent method.
[0015] In one embodiment, the solvent comprises chitosan.
[0016] In view of the fact that plant essential oils themselves have the characteristics of volatilizing too quickly and some essential oils have irritating odors, the present invention also needs to consider how to make plant essential oils be gradually released after spraying, rather than being lost too quickly in a short period of time, so as to prolong the duration of fly repellent efficacy, and avoid side effects such as odor irritation caused by excessive volatilization of essential oils. Based on this, the inventors propose to introduce chitosan. In the process of blending fly repellent components, the chitosan-containing solvent is coated on the surface of the fly repellent components to form a film, so that the fly repellent components will not be lost too quickly in a short period of time, and can be slowly and gradually released through the film formed by chitosan, prolonging the duration of fly repellent efficacy, and can gradually release fly repellent effective ingredients, so that houseflies approach the spraying area and contact the slowly released fly repellent effective ingredients, and then feel uncomfortable and leave quickly. Houseflies that contact the slow-release fly repellent will have slow behavior or even death after leaving. In addition, the solvent containing chitosan can stably coexist with the fly repellent components and emulsifiers mainly composed of plant essential oils, and is easy to be evenly dispersed in the aqueous phase system. At the same time, chitosan is a non-toxic, green and biodegradable material. After being sprayed in indoor places such as restaurants, living rooms, and reception rooms, the fly repellent will not cause pollution, is easy to clean, and is convenient for users to clean up later.
[0017] In one embodiment, the mass percentage of the chitosan in the sustained-release fly repellent is 1.5-2.5%.
[0018] In one embodiment, the plant essential oil includes at least one of lemongrass oil, star anise oil, eucalyptus oil, and citronella oil.
[0019] In one embodiment, the slow-release fly repellent is applied by spraying.
[0020] The present invention also provides a method for preparing the sustained-release fly repellent, comprising the following steps: preparing a solvent, adding fly repellent ingredients and an emulsifier, fixing the volume, and stirring to obtain the sustained-release fly repellent.
[0021] In one embodiment, the stirring includes closed stirring for 1-2 hours.
[0022] The present invention also provides a fly repellent method, which comprises spraying the slow-release fly repellent on the area to be repelled.
[0023] In one embodiment, the spraying is achieved by high pressure or ultra-high pressure spraying equipment.
[0024] Compared with the prior art, the present invention has the following beneficial effects:
[0025] The invention discloses a sustained-release fly repellent and its preparation method and application. The sustained-release fly repellent uses plant essential oil from natural sources as an effective fly repellent ingredient, and can be directly sprayed on the ground, desktop or indoor air in the area waiting for fly repelling by spraying. The sustained-release fly repellent has good overall dispersibility, uniform and stable ingredients, will not be lost too quickly in a short time, has a long duration of efficacy, and can gradually release the effective fly repellent ingredients, so that houseflies approach the spraying area and contact the sustained-released effective fly repellent ingredients, and then feel uncomfortable and leave quickly. Houseflies contacting the sustained-release fly repellent will have behavioral retardation or even death after leaving. The sustained-release fly repellent has a homogeneous liquid phase, uniform distribution of the agent, no residue after spraying, and needs to be shaken before use. The preparation process is simple, and provides a technical reference for the development of fly repellents in a green, environmentally friendly and sustainable direction. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 This is a schematic diagram of the state of preparing the fly repellent in Example 1 and Example 2, wherein: Figure 1 The left side shows the fly repellent prepared in Example 1. Figure 1 The right side shows the fly repellent prepared in Example 2;
[0027] Figure 2 This is a schematic diagram of the state of the fly repellent of Examples 1 and 2 after being left to stand for 2 days, wherein: Figure 2 The left side is a schematic diagram of the fly repellent prepared in Example 1 after being left to stand for 2 days. Figure 2 The right side is a schematic diagram of the state of the fly repellent prepared in Example 2 after being left to stand for 2 days;
[0028] Figure 3 This is a schematic diagram of the state of the fly repellent prepared in Comparative Example 1 and Comparative Example 3 at 24 hours, wherein: Figure 3 The left is a schematic diagram of the state of comparative example 1 when it is left to stand for 24 hours. Figure 3 The right is a schematic diagram of the state of comparative example 3 when it is left to stand for 24 hours;
[0029] Figure 4 This is a schematic diagram of the state of the fly repellent prepared in Comparative Examples 2 and 4 at 24 hours, wherein: Figure 4 The left is a schematic diagram of the state of comparative example 2 when it is left to stand for 24 hours. Figure 4 The right is a schematic diagram of the state of comparative example 4 when it is left to stand for 24 hours;
[0030] Figure 5 It is a schematic diagram of a high pressure spray device;
[0031] Figure 6 This is a statistical graph of the fly repellent rate of the fly repellent of Example 1 over time;
[0032] Figure 7 This is a statistical chart of the fly repellent rate of the fly repellent of Example 2 over time. DETAILED DESCRIPTION
[0033] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.
[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.
[0035] source:
[0036] Unless otherwise specified, the reagents, materials, and equipment used in this example are all commercially available; the experimental methods are all conventional experimental methods in the art unless otherwise specified.
[0037] The original and mass percentages of each embodiment of the present invention are shown in the following table:
[0038] Table 1 Raw materials and mass percentages of each example
[0039]
[0040]
[0041] Example 1
[0042] A sustained-release fly repellent and a preparation method thereof.
[0043] The preparation method is specifically as follows:
[0044] 1. Prepare the solvent.
[0045] Weigh 2 g of chitosan powder, add it into a container containing 80 mL of deionized water, add 1 g of glacial acetic acid, stir for 30 min on a 500 rpm centrifuge, and mix well to obtain a solvent.
[0046] 2. Weigh 0.15g lemongrass oil, 0.15g emulsifier 2201, and 0.15g emulsifier 0201B, mix, add to the solvent, and dilute to the specified volume with deionized water. Stir at 500rpm for 1-2h, mix evenly, and then dispense into a high-pressure spray device to obtain a slow-release fly repellent, such as Figure 1 As shown on the left, the state after standing for 2 days is as follows Figure 2 Shown on the left.
[0047] Example 2
[0048] The same as Example 1, except that the plant essential oil is star anise oil; the prepared sustained-release fly repellent is as follows Figure 1 As shown on the right, the state after standing for 2 days is as follows Figure 2 Shown right.
[0049] Example 3
[0050] Basically the same as Example 1, except that the emulsifier is 0.3 g of emulsifier 2201.
[0051] Example 4
[0052] Basically the same as Example 2, except that the emulsifier is 0.3 g of emulsifier 2201.
[0053] Comparative Example 1
[0054] The same as Example 1, except that a different emulsifier is used. The emulsifier of this comparative example specifically uses an anionic surfactant AOT. The fly repellent prepared is obviously stratified and precipitated. Figure 3 (Left) shown.
[0055] Comparative Example 2
[0056] The same as Example 2, except that a different emulsifier is used. The emulsifier of this comparative example is specifically an anionic surfactant AOT. The prepared fly repellent is obviously stratified and precipitated. Figure 4 (Left) shown.
[0057] Comparative Example 3
[0058] The same as Example 1, except that a different emulsifier is used. The emulsifier of this comparative example is specifically Nongru 0203B. The prepared fly repellent is obviously stratified and precipitated. Figure 3 (right) shown.
[0059] Comparative Example 4
[0060] The same as Example 2, except that a different emulsifier is used. The emulsifier of this comparative example is Nongru 0203B. The fly repellent prepared is obviously stratified and precipitated. Figure 4 (right) shown.
[0061] Experimental example
[0062] 1. Observe the sample status.
[0063] The fly repellents prepared in the examples and comparative examples were placed in glass bottles to observe the status of the samples. The results are shown in the following table.
[0064] Table 2 Observation results of the fly repellents of various embodiments and comparative examples
[0065] Sample Group Let stand for 1 day Leave to stand for 2 days Example 1 Even distribution Even distribution Example 2 Even distribution Even distribution Example 3 Slightly thread-like The solution has stratification Example 4 Slightly thread-like Turbid solution Comparative Example 1 Floccules appear on the upper part / Comparative Example 2 Large white flocs appear / Comparative Example 3 The appearance of filaments / Comparative Example 4 Upper flocculent /
[0066] From the results in the above table, it can be analyzed that, compared with Example 3, when emulsifier 2201 and emulsifier 0201B are added at the same time, the solution is homogeneously distributed and no stratification is observed in Example 1; when only emulsifier 2201 is added, floccules begin to appear in the solution after 24 hours, and the property is unstable. Compared with Comparative Example 2, when emulsifier 2201 and emulsifier 0201B are added in a ratio of 1:1, the solution is still homogeneously distributed after 48 hours, while floccules begin to appear in the solution when only emulsifier 2201 is added, and the solution becomes turbid after 48 hours. If other emulsifiers are used (Comparative Examples 1-4), more floccules and filaments begin to appear after standing for 24 hours.
[0067] 2. Experimental testing.
[0068] (1) Test method: House flies were placed in an insect cage (20 cm × 20 cm × 20 cm) and sprayed on a plastic plate (5 cm × 5 cm) using a high-pressure spray device (such as Figure 5 Spray the fly repellent product as shown above, and immediately place the plastic plate in the corner of the cage. 30 adult flies that have emerged for 3 days pass through the cuff entrance, and begin to observe the adult flies approaching the plastic plate. Continue to observe and record the fly repellent situation within 30 minutes, and then observe the landing situation of the houseflies every half an hour. This test is carried out in a dark environment away from light.
[0069] According to the square box device of GB / T 13917.6-2009 "Evaluation of indoor efficacy test agents for registered pesticides Part 6: Electric mosquito-repellent liquid", the KT of houseflies was measured. 50 value.
[0070] (2) Test results: The repellency rate of Example 1 against houseflies is as high as 90%, KT 50 The repellency rate of Example 2 against houseflies is as high as 91.6%, KT 50 Value 20.45min;
[0071] Example 1 Chitosan slow-release agent repellent time of houseflies is significantly longer than lemongrass oil, such as Figure 6 The repellent effect on houseflies in Example 2 is significantly longer than that of star anise oil. Figure 7 shown.
[0072] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0073] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.
Claims
1. A sustained-release fly repellent, characterized in that: The following raw materials are included in mass percentage: Fly repellent ingredient 0.1-0.2% Emulsifier 0.25-0.35% Solvent residue; The fly repellent ingredient comprises plant essential oil.
2. The sustained-release fly repellent according to claim 1, characterized in that: The emulsifier includes at least one of emulsifier 2201 and emulsifier 0201B.
3. The sustained-release fly repellent according to claim 1, characterized in that: The solvent includes chitosan.
4. The sustained-release fly repellent according to claim 3, characterized in that: The mass percentage of the chitosan in the sustained-release fly repellent is 1.5-2.5%.
5. The sustained-release fly repellent according to claim 1, characterized in that: The plant essential oil includes at least one of lemongrass oil, star anise oil, eucalyptus oil and citronella oil.
6. The sustained-release fly repellent according to any one of claims 1 to 5, characterized in that: The slow-release fly repellent is applied by spraying.
7. The method for preparing the sustained-release fly repellent according to any one of claims 1 to 6, characterized in that: The following steps are involved: A solvent is prepared, fly repellent ingredients and an emulsifier are added, the volume is fixed, and the mixture is stirred to obtain a slow-release fly repellent.
8. The preparation method according to claim 7, characterized in that: The stirring includes closed stirring for 1-2 hours.
9. A fly repelling method, characterized in that: The sustained-release fly repellent according to any one of claims 1 to 6 is sprayed on the area to be repelled.
10. The fly repelling method according to claim 9, characterized in that: The spraying is achieved by high pressure or ultra-high pressure spraying equipment.