Urban expelling spray

Abstract

The invention discloses a bear-expelling spray, and particularly relates to the technical field of bear-expelling sprays.The bear-expelling spray comprises irritant components, a solvent, a spray propellant and special smell inhibiting nanoparticles, the irritant components comprise capsaicin, allyl sulfide and natural plant extracts, the solvent is formed by mixing alcohol, water and a surfactant, and the spray propellant is formed by mixing natural plant extracts and natural plant extracts. The spraying propellant is inert gas, and the special smell inhibiting nano-particles are prepared by spraying a solution containing irritant components into small liquid drops and then rapidly drying the small liquid drops in hot air, so that the components form the nano-particles. The spray disclosed by the invention can have a good repelling effect on the bear, can prevent high-concentration capsaicin from hurting the bear, reduces the harm of Freon to the environment, is high in environmental protection property, reduces the use of organic reagents, and ensures the safety during use.

Description

Technical Field

[0001] The present invention relates to the technical field of bear repellent sprays, and more particularly to a bear repellent spray. Background Art

[0002] In recent years, with the enhancement of human environmental protection awareness and the improvement of the living environment of wild animals, the number of bears has continued to increase, and their range of activities has continued to expand. Human-bear conflicts often occur in some remote areas. These conflicts usually have adverse effects on both humans and wild animals. In order to protect human safety and reduce harm to wild animals, a series of non-lethal protective equipment and chemical sprays have been developed to expel animals without causing permanent harm to animals and protect human safety. At present, protective sprays have become an important tool for dealing with bear threats.

[0003] Existing bear repellent sprays are mainly based on the chemical formula of capsaicin, which achieves the effect of repelling bears by irritating the animal's respiratory tract and eyes, causing a brief burning sensation. This type of spray product has a history of use for decades and is recognized as an effective means of dealing with bear attacks.

[0004] However, existing bear repellent sprays still have the following disadvantages: 1. Existing bear sprays are mainly foreign products and are expensive; 2. The main ingredients include organic reagents such as Freon, capsaicin and propylene glycol. Freon is used as a jet propulsion device and can easily pollute the environment. Capsaicin is an irritating ingredient and excessive use can easily cause harm to animals. Propylene glycol, as a solvent, is flammable and poses an unsafe factor.

[0005] In view of the above situation, the present invention provides a bear repellent spray. Summary of the invention

[0006] In order to overcome the above defects of the prior art, the present invention provides a bear repellent spray to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: A bear repellent spray, comprising an irritant component, a solvent, a jet propellant and special odor-inhibiting nanoparticles, wherein; Pungent ingredients include capsaicin, allyl sulfide, and natural plant extracts; The solvent is a mixture of alcohol, water and surfactant; The jet propellant is an inert gas; Special odor suppressing nanoparticles are made by spraying a solution containing irritating ingredients into small droplets, which are then quickly dried in hot air to form the ingredients into nanoparticles.

[0008] Preferably, the mass ratio of capsaicin to allyl sulfide is 8:1, and the added amount of natural plant extract accounts for 5%-10% of the total mass of the irritant ingredients.

[0009] Preferably, the volume ratio of the alcohol to water is 7.5-9.5:2.5-0.5, and the added amount of the surfactant is 1%-3% of the total mass of the solvent.

[0010] Preferably, the inert gas is any one of argon or nitrogen, and the pressure range of the inert gas is 0.6-1.0 MPa.

[0011] Preferably, the natural plant extract includes but is not limited to peppermint essential oil, eucalyptus essential oil and lavender essential oil, and the surfactant is polysorbate-80.

[0012] Preferably, the irritating component includes but is not limited to any one of ethyl mercaptan, valeraldehyde and limonene, and the particle size of the special odor suppressing nanoparticles is 15-30 nm.

[0013] The present invention also provides a preparation method for preparing the above-mentioned bear repellent spray, and the preparation method comprises the following steps: S1, dissolving capsaicin, allyl sulfide and natural plant extract in a mixture of alcohol and water containing a surfactant, adding special odor-inhibiting nanoparticles, and performing ultrasonic treatment, wherein; The mass ratio of capsaicin to allyl sulfide is 8:1. The amount of natural plant extracts added accounts for 5%-10% of the total weight of irritating ingredients; The volume ratio of alcohol to water is 7.5-9.5:2.5-0.5; The amount of surfactant added is 1%-3% of the total mass of the solvent; The specific odor-suppressing nanoparticles account for 5%-15% of the total spray mass; S2, put the dissolved solution into a spray bottle; S3. Fill the spray bottle with argon or nitrogen gas, and the pressure after filling is in the range of 0.6-1.0 MPa to obtain a bear repellent spray.

[0014] Preferably, in step S1, the ultrasonic treatment time is 10-30 min and the temperature is 20-30°C.

[0015] Technical effects and advantages of the present invention: 1. The present invention uses capsaicin, allyl sulfide and natural plant extracts to work together to produce a strong pungent smell and burning sensation, which can make bears feel uncomfortable quickly and stay away. Compared with traditional bear repellent sprays, the bear repellent time is shorter and the effect is more significant. The use of allyl sulfide and other reagents with pungent smells in combination with capsaicin can reduce the use of capsaicin while enhancing the effect of odor repelling, so as to reduce the damage caused to bears by high capsaicin concentrations. At the same time, the addition of special odor-inhibiting nanoparticles reduces the adaptability of bears to the odor of the spray, enhances the durability of the bear repellent effect, and ensures that the deterrent effect on bears is maintained for a long time. 2. The present invention reduces the use of organic reagents by mixing alcohol with water and adding a surfactant while ensuring the dissolution of capsaicin, thereby ensuring safety of use. Moreover, the jet propellant is an inert gas, which replaces the traditional Freon, is environmentally friendly, avoids pollution to the atmosphere, and has a specific environmental protection advantage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the overall flow chart of the present invention. DETAILED DESCRIPTION

[0017] Embodiment 1, This embodiment provides a bear repellent spray, comprising an irritant component, a solvent and a jet propellant and special odor-inhibiting nanoparticles, wherein; The irritant ingredients include capsaicin, allyl sulfide and natural plant extracts, and the natural plant extracts are specifically peppermint essential oil, eucalyptus essential oil and lavender essential oil; The flux is a mixture of alcohol, water and a surfactant, and the surfactant is polysorbate-80; Jet propellants are inert gases, including argon; The special odor suppressing nanoparticles are prepared by spraying a solution containing irritating ingredients into small droplets, which are then quickly dried in hot air to form nanoparticles. The irritating ingredients include but are not limited to any one of ethyl mercaptan, valeraldehyde and limonene, and the particle size is 20 nm.

[0018] A preparation method for preparing the above-mentioned bear repellent spray comprises the following steps: S1. Capsaicin and allyl sulfide are weighed in a mass ratio of 8:1, and dissolved together with a natural plant extract accounting for 8% of the total mass of the irritant ingredients (peppermint essential oil, eucalyptus essential oil and lavender essential oil are mixed in a ratio of 1:1:1) in a mixed solution of alcohol and water containing 2% of polysorbate 80 accounting for the total mass of the solvent; S2, adding 10% of the total mass of the total spray of special odor-inhibiting nanoparticles at the same time, and ultrasonically treating at 25 °C for 20 min; S3, put the solution into a spray bottle; S4. Fill the spray bottle with argon gas to a pressure of 0.8 MPa to obtain a bear repellent spray.

[0019] Embodiment 2, This embodiment provides a bear repellent spray, comprising an irritant component, a solvent and a jet propellant and special odor-inhibiting nanoparticles, wherein; The irritant ingredients include capsaicin, allyl sulfide and natural plant extracts, and the natural plant extracts are specifically peppermint essential oil and eucalyptus essential oil; The flux is a mixture of alcohol, water and a surfactant, and the surfactant is polysorbate-60; The jet propellants are inert gases, including nitrogen; The special odor suppressing nanoparticles are made by spraying a solution containing irritating ingredients into small droplets, which are then quickly dried in hot air to form nanoparticles. The irritating ingredient is valeraldehyde with a particle size of 18nm.

[0020] A preparation method for preparing the above-mentioned bear repellent spray comprises the following steps: S1. Capsaicin and allyl sulfide are weighed in a mass ratio of 8:1, and dissolved together with a natural plant extract (peppermint essential oil and eucalyptus essential oil mixed in a ratio of 2:3) accounting for 5% of the total mass of the irritant ingredients in a mixed solution of alcohol and water containing 1% of polysorbate 60 accounting for the total mass of the solvent; S2, adding 5% of the total mass of the total spray of special odor-inhibiting nanoparticles at the same time, and ultrasonically treating at 20 °C for 30 min; S3, put the solution into a spray bottle; S4. Fill the spray bottle with nitrogen to a pressure of .6 MPa to obtain a bear repellent spray.

[0021] Embodiment 3, This embodiment provides a bear repellent spray, comprising an irritant component, a solvent and a jet propellant and special odor-inhibiting nanoparticles, wherein; The irritant ingredients include capsaicin, allyl sulfide and natural plant extracts, and the natural plant extracts are specifically eucalyptus essential oil and lavender essential oil; The flux is a mixture of alcohol, water and a surfactant, and the surfactant is polysorbate-60; Jet propellants are inert gases, including argon; The special odor suppressing nanoparticles are made by spraying a solution containing irritating ingredients into small droplets, which are then quickly dried in hot air to form the ingredients into nanoparticles. The irritating ingredient is limonene with a particle size of 22nm.

[0022] A preparation method for preparing the above-mentioned bear repellent spray comprises the following steps: S1. Capsaicin and allyl sulfide are weighed in a mass ratio of 8:1, and dissolved together with a natural plant extract (eucalyptus essential oil and lavender essential oil mixed in a ratio of 1:2) accounting for 10% of the total mass of the irritant ingredients in a mixed solution of alcohol and water containing 3% of polysorbate 60 accounting for the total mass of the solvent; S2, adding 15% of the total mass of the total spray of special odor-inhibiting nanoparticles at the same time, and ultrasonically treating at 30°C for 10 min; S3, put the solution into a spray bottle; S4. Fill the spray bottle with argon gas to a pressure of 1.0 MPa to obtain a bear repellent spray.

[0023] Next, for the bear repellent sprays prepared in the above Examples 1-3, a conventional bear repellent spray was used as a comparative example, and the sprays were respectively subjected to a repellent effect test, a odor persistence test, and a safety test on experimental animals simulating bears (such as large dogs that have been trained to respond to specific stimuli). The test methods are as follows: Repellent effect test: Place a simulated bear experimental animal in a closed space, spray it with the bear repellent spray of the present invention and a traditional bear repellent spray at a certain distance, record the time from the experimental animal being stimulated to leaving the closed space, and compare the bear repellent effects of the two sprays; Odor persistence test: In a well-ventilated space, the bear repellent spray of the present invention and the traditional bear repellent spray are placed respectively, and the odor intensity at different time points is measured using an odor sensor, the change of the odor intensity over time is recorded, and the odor persistence of the two sprays is compared; Safety Testing: The bear repellent spray of the present invention and the traditional bear repellent spray are sprayed on some common materials (such as cloth, plastic, etc.) respectively to observe whether they will cause corrosion or damage to the materials. At the same time, observe whether the experimental animals have abnormal reactions after contact with the spray, such as difficulty breathing, skin allergies, etc.

[0024] The test data table is as follows: Removal time (s) Odor persistence (min) Impact on materials Experimental animal reactions Example 1 20 40 No obvious corrosion or damage No abnormal reaction Example 2 25 35 No obvious corrosion or damage No abnormal reaction Example 3 18 38 No obvious corrosion or damage No abnormal reaction Comparative Example 35 25 Some materials have slight corrosion No abnormal reaction In the above table: The expulsion time was the time taken from the start of spraying to the time the experimental animals left the enclosure; Odor persistence is the duration of time that the odor can be clearly perceived after the spray is sprayed; The impact on materials mainly involves observing whether there is corrosion or damage to common materials such as fabrics and plastics; The reaction of experimental animals was observed to see whether the experimental animals showed any abnormalities after being exposed to the spray, such as breathing difficulties, skin allergies, etc.

[0025] According to the data in the above table, the bear repelling time of Examples 1-3 is significantly shorter than that of the traditional bear repelling spray, which are 20s, 25s and 18s respectively, while the repelling time of the traditional bear repelling spray is 35s, which indicates that the spray of the present invention can make the bear leave more quickly and has a better bear repelling effect; The odor persistence of Examples 1-3 is all above 35 minutes, while the odor persistence of the conventional bear repellent spray is only 25 minutes, which means that the spray of the present invention can maintain its deterrent effect on bears for a longer period of time and reduce the possibility of bears approaching again; Examples 1-3 of the present invention had no obvious corrosion or damage to common materials, while some materials of the traditional bear repellent spray were slightly corroded, which shows that the spray of the present invention has less impact on the surrounding environment and objects during use and is safer and more reliable.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bear repellent spray, characterized in that: These include irritating ingredients, solvents, jet propellants and special odor suppressing nanoparticles, among which; Pungent ingredients include capsaicin, allyl sulfide, and natural plant extracts; The solvent is a mixture of alcohol, water and surfactant; The jet propellant is an inert gas; Special odor suppressing nanoparticles are made by spraying a solution containing irritating ingredients into small droplets, which are then quickly dried in hot air to form the ingredients into nanoparticles.

2. The bear repellent spray according to claim 1, characterized in that: The mass ratio of capsaicin to allyl sulfide is 8:1, and the added amount of natural plant extract accounts for 5%-10% of the total mass of the irritant ingredients.

3. The bear repellent spray according to claim 2, characterized in that: The volume ratio of the alcohol to water is 7.5-9.5:2.5-0.

5. Meanwhile, the added amount of the surfactant is 1%-3% of the total mass of the solvent.

4. The bear repellent spray according to claim 3, characterized in that: The inert gas is any one of argon or nitrogen, and the pressure range of the inert gas is 0.6-1.0Mpa.

5. The bear repellent spray according to claim 4, characterized in that: The natural plant extracts include but are not limited to peppermint essential oil, eucalyptus essential oil and lavender essential oil, and the surfactant is polysorbate-80.

6. The bear repellent spray according to claim 5, characterized in that: The irritating ingredients include but are not limited to any one of ethyl mercaptan, valeraldehyde and limonene, and the particle size of the special odor-inhibiting nanoparticles is 15-30 nm.

7. A preparation method for preparing the bear repellent spray according to claim 6, characterized in that: The preparation method comprises the following steps: S1, dissolving capsaicin, allyl sulfide and natural plant extract in a mixture of alcohol and water containing a surfactant, adding special odor-inhibiting nanoparticles, and performing ultrasonic treatment, wherein; The mass ratio of capsaicin to allyl sulfide is 8:

1. The amount of natural plant extracts added accounts for 5%-10% of the total weight of irritating ingredients; The volume ratio of alcohol to water is 7.5-9.5:2.5-0.5; The amount of surfactant added is 1%-3% of the total mass of the solvent; The specific odor-suppressing nanoparticles account for 5%-15% of the total spray mass; S2, put the dissolved solution into a spray bottle; S3. Fill the spray bottle with argon or nitrogen gas, and the pressure after filling is in the range of 0.6-1.0 MPa to obtain a bear repellent spray.

8. A preparation method according to claim 7, characterized in that: In step S1, the ultrasonic treatment time is 10-30 min and the temperature is 20-30°C.

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