Deodorizing air freshener and preparation method thereof

Abstract

The invention relates to the field of air purification, and particularly discloses a deodorizing air freshener and a preparation method thereof. The deodorizing air freshener is prepared from the following raw materials in percentage by weight: 2 to 10 percent of deodorant, 10 to 20 percent of edible alcohol, 0.1 to 2 percent of edible essence, 0.1 to 5 percent of propellant and the balance of pure water, the deodorant is prepared from the following raw materials in percentage by weight: 13 to 17 percent of tea seed oil, 20 to 30 percent of amino acid, 10 to 20 percent of adsorbent, 5 to 10 percent of soybean seed extract, 2 to 5 percent of water-soluble zinc salt and 30 to 40 percent of water. The deodorizing air freshener is green, environment-friendly, non-toxic, harmless, free of secondary pollution and high in formaldehyde removal efficiency, and has the advantages of being efficient in purification, rapid in deodorizing, safe and non-irritant.

Description

Technical Field

[0001] The present application relates to the technical field of air purification, and more specifically, to a deodorizing air freshener and a preparation method thereof. Background Art

[0002] With the improvement of people's living standards, interior decoration has spread throughout urban and rural areas. However, various decoration materials used in decoration, such as plywood, paint, plastic products, flooring, etc. contain volatile harmful gases to varying degrees. The main toxic and harmful gases of indoor air pollution are formaldehyde, ammonia, benzene, etc. Indoor pollution has become a killer of human health.

[0003] At present, common deodorizing and air fresheners on the market are handled separately basically, and mostly utilize the adsorption properties of some materials or utilize essence components to cover up the smell, and produce a kind of false appearance of removing formaldehyde or peculiar smell. As application number is the invention patent document of CN031353835, discloses a kind of air disinfecting and sterilizing freshener, which is composed of the following ingredients by weight percentage: disinfectant 0.01%-2%, nonionic surfactant 1.5%-3%, polyol 1%-4%, natural organic acid 0.1%-1%, essence 0.3%-0.7%, emulsifying dispersant 0.3%-0.7%, plant ethanol extract 1%-2%, light-shielding stabilizer 0-0.4%, ethanol 0-4%, water 82.2%-95.79%.

[0004] These air fresheners contain surfactants, plant extracts, and fragrances. Surfactants can absorb some odor molecules, but their adsorption and purification efficiency is low and they cannot completely eliminate odor molecules. The active ingredients in plant extracts can complex with odor molecules or produce a slight decomposition reaction, but this results in slow and inefficient odor removal. Fragrance masking technology simply masks unpleasant odors with new scents and does not effectively eliminate them. Therefore, when air fresheners are used for indoor air purification and deodorization, harmful and unpleasant odors such as formaldehyde, hydrogen sulfide, ammonia, and amines are not removed. Furthermore, harmful substances such as fragrances (mostly benzene derivatives) are absorbed into the human body, increasing the amount of these substances. Summary of the Invention

[0005] In order to eliminate odors from the source and improve the formaldehyde removal efficiency and durability of air fresheners, the present application provides a deodorizing air freshener and a preparation method thereof.

[0006] In a first aspect, the present application provides a deodorizing air freshener, which adopts the following technical solution: A deodorizing air freshener comprising the following raw materials in percentage by weight: 2-10% deodorizing agent, 10-20% edible alcohol, 0.1-2% edible flavoring, 0.1-5% propellant, and the balance being pure water; The deodorant comprises the following raw materials in percentage by weight: 13-17% of tea seed oil, 20-30% of amino acid, 10-20% of adsorbent, 5-10% of soybean seed extract, 2-5% of water-soluble zinc salt and 30-40% of water.

[0007] By adopting the above technical scheme, a deodorant is prepared using ingredients such as amino acids, adsorbents, soybean seed extracts and tea seed oil. Tea seed oil contains a variety of active ingredients, such as squalene, vitamin E, etc., which have antioxidant effects, help protect the adsorption material from being easily damaged by oxidation, maintain its ability to adsorb and decompose formaldehyde, and reduce the impact of the storage environment on the air freshener. In addition, tea seed oil has strong permeability, which can help the effective ingredients in the deodorant better penetrate into the interior of the treated material, thereby improving the adsorption efficiency. Certain components in soybean seed extract, such as isoflavones, have specific chemical structures, which can provide additional adsorption sites, increase the interaction force between formaldehyde molecules and adsorbents, and thus increase the adsorption capacity. In addition, components such as phytoestrogens in soybean seed extract help enhance the stability of the deodorant, so that it can still maintain good adsorption performance under different environments. Tea seed oil and soybean seed extract are natural plant ingredients, safe and non-toxic, and will not cause harm to the human body and the environment.

[0008] The amino group in the amino acid molecule can react with formaldehyde to generate hydroxyl derivatives and water, which can not only effectively remove formaldehyde, but also the generated products are non-toxic and harmless, green and environmentally friendly, and will not cause secondary pollution. Water-soluble zinc salts have powerful deodorizing and odor-removing capabilities, and can permanently remove harmful substances by chemically bonding and redox reactions with odor factors such as formaldehyde. In addition, water-soluble zinc salts have good water solubility and biodegradability, and are relatively safe and environmentally friendly.

[0009] Adsorbents usually have a large specific surface area and rich pore structure, which can efficiently adsorb formaldehyde molecules and odorous gases in the air. Through physical adsorption, formaldehyde molecules are fixed on the surface of the filler, thereby achieving the purpose of purifying the air.

[0010] Therefore, amino acids, tea seed oil, adsorbents and soybean seed extracts are used as raw materials for deodorizers. The deodorizers made can eliminate odors from the source and achieve deodorizing effects in a very short time. The ingredients are non-toxic, harmless and will not cause secondary pollution in the room.

[0011] Optionally, optionally, the deodorizing air freshener contains the following raw materials in weight percentage: deodorant 10%, edible alcohol 10%, edible flavoring 2%, propellant 5%, and the balance is pure water, and the deodorizer contains the following raw materials in weight percentage: tea seed oil 16%, amino acid 20%, adsorbent 20%, soybean seed extract 8%, water-soluble zinc salt 4%, and water 31%.

[0012] Optionally, the mass ratio of amino acid to adsorbent in the deodorant is 1:1 By adopting the above technical solution, amino acids and adsorbents in appropriate dosage ratios can be used to adsorb and decompose harmful and odorous gases such as formaldehyde, achieving better air purification effects.

[0013] Optionally, the mass ratio of tea seed oil to soybean seed extract in the deodorant is 1.75-2:1.

[0014] By adopting the above technical scheme, the natural antioxidants contained in tea seed oil, such as tea polyphenols, have strong reducing properties and can undergo redox reactions with formaldehyde to convert formaldehyde into harmless substances. In addition, the good permeability and adsorption properties of tea seed oil can penetrate into the interior of the material, adsorb and remove the formaldehyde therein. The soy protein, soy isoflavones and other substances contained in the soybean seed extract have certain active amino and hydroxyl functional groups, which can undergo nucleophilic addition reactions with the carbonyl groups in formaldehyde to generate stable addition products, thereby reducing the formaldehyde concentration. The above-mentioned amounts of tea seed oil and soybean seed extract can cooperate with each other, and the active ingredients in the two can complement and synergize with each other. Tea seed oil is mainly responsible for reducing and adsorbing formaldehyde, and soybean seed extract mainly reduces its concentration by undergoing addition reactions with formaldehyde. This synergistic effect can more comprehensively remove formaldehyde from indoor air and improve the purification effect.

[0015] Optionally, the mass ratio of tea seed oil to soybean seed extract in the deodorant is 2:1.

[0016] By adopting the above technical solution, more precisely added amounts of tea seed oil and soybean seed extract can better produce the effect of adsorbing and eliminating formaldehyde.

[0017] Optionally, the amino acid is at least one of methionine, lysine, glutamic acid, threonine and tyrosine.

[0018] By adopting the above technical solution, methionine has a good capture effect on formaldehyde and can react chemically with formaldehyde to form a stable compound, thereby fixing the formaldehyde and preventing it from being released into the air; lysine has a strong adsorption capacity and can adsorb formaldehyde molecules in the air on its surface, playing a role in purifying the air, effectively adsorbing and reducing the release of formaldehyde; glutamic acid can contact with formaldehyde and promote its conversion into harmless substances while releasing less secondary pollution; tyrosine reduces formaldehyde to methanol through electrochemical reaction, achieving the purpose of capturing and eliminating formaldehyde. Optionally, the amino acids include methionine and lysine in a mass ratio of 1:1.

[0019] By adopting the above technical solution, methionine can react chemically with formaldehyde, thereby effectively fixing the formaldehyde, preventing its release and reducing its concentration. Lysine has a strong adsorption capacity, and the two work synergistically. Methionine first reacts with formaldehyde to form a stable compound, reducing the concentration of free formaldehyde, while lysine further captures and fixes residual formaldehyde molecules through adsorption, thereby enhancing the overall formaldehyde purification effect.

[0020] Optionally, the water-soluble zinc salt is selected from at least one of zinc sulfate, zinc chloride, zinc nitrate, zinc lactate, zinc amino acid, zinc ricinoleate and zinc gluconate.

[0021] By adopting the above technical solution, amino acid zinc undergoes chemical bonding, oxidation-reduction and other chemical reactions with odor factors, thereby achieving the effect of quickly and permanently removing various odor molecules in the environment; zinc ricinoleate can react chemically with odor molecules (such as methyl mercaptan, hydrogen sulfide, ammonia, etc.) to generate odorless zinc salt complexes, thereby efficiently removing unpleasant odors and effectively preventing them from being emitted into the surrounding environment; zinc lactate and zinc sulfate can effectively react with harmful gases such as formaldehyde to reduce their concentration in the air, zinc chloride has good odor absorption capacity, and zinc gluconate can adsorb and neutralize odor molecules in the air through its water solubility and chelating ability. It can also react with harmful gases such as formaldehyde to quickly convert them into harmless substances, thereby purifying the air.

[0022] Optionally, the water-soluble zinc salt comprises amino acid zinc and zinc lactate in a mass ratio of 1:0.3-0.5.

[0023] By adopting the above technical solution, amino acid zinc has high activity and excellent deodorizing effect, which can quickly remove formaldehyde and other harmful substances in the air and generate non-toxic and harmless hydroxyl derivatives and water. Zinc lactate has good water solubility and chelating ability, and can adsorb and neutralize odor molecules and other harmful substances. Amino acid zinc directly removes formaldehyde through chemical reaction, while zinc lactate reduces the release and diffusion of formaldehyde through adsorption and chelation. The two have complementary mechanisms, thus producing a certain synergistic effect.

[0024] Optionally, the edible flavor is at least one of orange flavor, apple flavor, mango flavor, and strawberry flavor.

[0025] Optionally, the adsorbent is polyacrylonitrile-based nano-carbon fibers loaded with porous calcium phosphate.

[0026] By adopting the above technical solution, polyacrylonitrile is used as the substrate of nanocarbon fibers to obtain nanocarbon fibers, which is the third form after powdered and granular carbon materials. Nanocarbon fibers have a large specific surface area, rich and developed void structure, small pore size, narrow pore size distribution, large adsorption capacity and fast adsorption speed, so they have excellent adsorption performance, can effectively remove volatile harmful gases in the air, and also have a good removal effect on inhalable particles. However, it is easy to reach adsorption saturation and may cause secondary pollution. Therefore, porous calcium phosphate is loaded on the nanocarbon fibers. Porous calcium phosphate has a high specific surface area and a special physical structure, which enables it to adsorb and remove odor molecules in the air, and has a good adsorption effect on formaldehyde and odor, thereby increasing the adsorption capacity of carbon nanofibers and improving air quality.

[0027] Optionally, the preparation method of the polyacrylonitrile-based nano-carbon fiber-loaded porous calcium phosphate is as follows: adding calcium hydroxide to water twice its mass, stirring and dispersing, then adding phosphoric acid, stirring evenly, then adding calcium carbonate, stirring and dispersing, to prepare a treatment solution; The polyacrylonitrile nanofibers are immersed in a treatment solution, filtered, heated for pre-oxidation, heated again for carbonization, cooled to room temperature, and ground to a particle size of less than 200 meshes.

[0028] By adopting the above technical solution, calcium hydroxide and phosphoric acid are used as raw materials of calcium phosphate, and calcium carbonate is used as a porogen. Under high temperature conditions of carbonization, calcium carbonate is decomposed to produce carbon dioxide and calcium oxide. The carbon dioxide gas released by the reaction has a pore-forming function, and calcium oxide can increase the calcium-phosphorus ratio of porous calcium phosphate and can be used as an additive for sintering calcium phosphate to form a solid solution with calcium phosphate, prevent crystal transformation, inhibit grain growth, make the particles of porous calcium phosphate fine, increase the specific surface area, and better absorb odorous gases.

[0029] Optionally, the raw materials of the polyacrylonitrile-based nano-carbon fibers include polyacrylonitrile and cobalt acetate in a mass ratio of 1:0.05-0.125.

[0030] By adopting the above technical scheme, cobalt acetate, after mixing with polyacrylonitrile and electrostatic spinning, can form a cobalt catalyst when polyacrylonitrile nanofiber is pre-oxidized and carbonized, which has good catalytic stability, while polypropylene nanofiber will undergo cyclization, dehydrogenation, oxidation, etc., in which some non-carbon elements such as hydrogen and oxygen will be removed to form nano-carbon fibers based on carbon elements, but still contain a certain amount of nitrogen, which is conducive to the dispersion and anchoring of cobalt. The graphite carbon layer around cobalt is combined with nitrogen-doped atoms to form a catalytic active center that is conducive to the activation of oxygen molecules, thereby improving the catalysis and oxidation efficiency of the material to gases such as formaldehyde. Therefore, cobalt acetate can cooperate with the nano-carbon fibers containing nitrogen and carbon formed by polyacrylonitrile, and the higher specific surface area and the pore structure rich in micropores are conducive to the transmission of substances and the exposure of active sites in the formaldehyde reaction process, thereby promoting the catalytic performance of gases such as formaldehyde, and preventing the desorption of substances such as formaldehyde adsorbed into the polyacrylonitrile-based nano-carbon fibers loaded with porous calcium phosphate.

[0031] Optionally, the propellant is one of nitrogen, propane, n-butane, isobutane and dimethyl ether.

[0032] In a second aspect, the present application provides a method for preparing a deodorizing air freshener, which adopts the following technical solution: A method for preparing a deodorizing air freshener comprises the following steps: Weigh edible alcohol, deodorant and edible flavoring in sequence and add them into the reactor, stir at a speed of 50-60 r / min until completely dissolved to prepare the base liquid; Add pure water to the base liquid and stir at a speed of 50-60 r / min for 10-12 minutes to prepare a feed liquid; After the liquid material is tested and found to be qualified, it is passed through a 200-mesh gauze, filled, assembled with an aerosol valve to seal the opening, and the propellant is injected to obtain the finished product.

[0033] By adopting the above technical solution, the formula is simple and easy to operate, with high cost performance. The amino acid deodorizer is well compatible with water and propellant, and can effectively remove odor molecules such as formaldehyde, acetaldehyde, toluene, amines (nicotine in cigarettes), sulfur-containing compounds (allicin in garlic and onions), and acids (isovaleric acid and butyric acid in human sweat). The present invention has a good deodorizing effect, with a measured acetaldehyde removal rate of over 90% and an ammonia removal rate of over 98%. It can be used for air purification in environments such as new cars, newly renovated rooms, new wardrobes, and offices. The water-based formula adopted can eliminate odors from the root, achieve a deodorizing effect in a very short time, and is highly efficient and long-lasting.

[0034] In summary, this application has the following beneficial effects: 1. Since the deodorizer of the present application uses amino acids as the main ingredient, a new type of odor-removing formaldehyde remover is obtained by compounding adsorbents, tea seed oil, etc. The ingredients are non-toxic and harmless, and will not cause secondary pollution in the room. The surface activity is increased through adsorption, penetration and other effects, so that its active ingredients can comprehensively and quickly capture volatile pollutants and odorous gases such as formaldehyde, sulfide, benzene series and ammonia, and lock the gas by complexation, and then completely decompose it.

[0035] 2. In this application, polyacrylonitrile-based nano-carbon fibers loaded with porous calcium phosphate are preferably used as adsorbents, which can increase the adsorption capacity of gases such as formaldehyde, accelerate the purification and decomposition speed, and improve the purification efficiency. At the same time, cobalt acetate is used in the preparation of polyacrylonitrile nano-fibers. After pre-oxidation and conversation, polyacrylonitrile-based nano-carbon fibers containing cobalt catalysts can be obtained, thereby effectively catalyzing the degradation of adsorbed gases such as formaldehyde, improving the degradation efficiency, and improving the air quality.

[0036] 3. The ingredients in this application are non-toxic, harmless, mild and non-irritating, improve indoor air quality, and do not cause secondary pollution. The results of the acute oral toxicity test show that the acute oral toxicity LDm of the product of this application to SPF-level KM mice is greater than 5000 mg / kg·BW, which is actually non-toxic. Multiple skin irritation tests have shown that the product of this application is non-irritating in multiple skin irritation tests on New Zealand rabbits. DETAILED DESCRIPTION

[0037] The following examples further illustrate the present application in detail.

[0038] Preparation Examples 1-5 of Adsorbents Preparation Example 1: (1) 2 g of polyacrylonitrile was dissolved in 18 g of DMF to prepare a polyacrylonitrile solution, and the polyacrylonitrile solution was used as a spinning solution for electrospinning. The solution was vacuum dried at 50° C. overnight to remove the solvent DMF to prepare polyacrylonitrile nanofibers. During electrospinning, the receiving distance was 18 cm, the positive electrode voltage was 20 kV, the roller speed was 140 r / min, the ambient temperature was 25° C., the humidity was 25%, and the propulsion speed was 0.08 mm / min. The polyacrylonitrile was selected from Guangdong Wengjiang Chemical Reagent, model PA98862, with a molecular weight of 150,000. (2) 0.03 mol of calcium hydroxide was added to twice its mass of water, and after stirring and dispersing at 1000 r / min for 30 min, phosphoric acid was added dropwise at a speed of 600 r / min, and after stirring for 30 min, calcium carbonate was added and dispersed at a speed of 1000 r / min for 30 min to prepare a treatment solution. The molar ratio of phosphoric acid to calcium hydroxide was 3:3, and the amount of calcium carbonate was 17% of the total weight of calcium hydroxide and phosphoric acid; (3) Polyacrylonitrile nanofibers were placed in the treatment solution and immersed at room temperature for 24 h. After filtering, they were placed in a muffle furnace, oxygen was introduced, and the temperature was increased to 280°C at 1°C / min, kept constant at this temperature for 2 h, and naturally cooled to room temperature. Then, they were placed in a quartz boat, and the quartz boat was placed in a tube furnace. Under a nitrogen atmosphere, the temperature was increased to 650°C at 1°C / min, kept constant at this temperature for 1 h, and then increased to 950°C at 1°C / min. Carbonization was carried out for 60 min, cooling to room temperature, and grinding to <200 mesh.

[0039] Preparation Example 2: (1) 2 g of polyacrylonitrile was dissolved in 18 g of DMF to prepare a polyacrylonitrile solution, and the polyacrylonitrile solution was used as a spinning solution for electrospinning. The solution was vacuum dried at 50° C. overnight to remove the solvent DMF to prepare polyacrylonitrile nanofibers. During electrospinning, the receiving distance was 18 cm, the positive electrode voltage was 20 kV, the roller speed was 140 r / min, the ambient temperature was 25° C., the humidity was 25%, and the propulsion speed was 0.08 mm / min. The polyacrylonitrile was selected from Guangdong Wengjiang Chemical Reagent, model PA98862, with a molecular weight of 150,000. (2) Place the polyacrylonitrile nanofibers in a muffle furnace, introduce oxygen, heat to 280°C at 1°C / min, keep constant for 2 hours, cool naturally to room temperature, and then place them in a quartz boat. Place the quartz boat in a tube furnace, heat to 650°C at 1°C / min in a nitrogen atmosphere, keep warm for 1 hour, then heat to 950°C at 1°C / min, carbonize for 60 minutes, cool to room temperature, and grind to <200 mesh.

[0040] Preparation Example 3: (1) 0.03 mol of calcium hydroxide was added to twice its mass of water, and the mixture was stirred and dispersed at 1000 r / min for 30 min. Phosphoric acid was then added dropwise at 600 r / min, and the mixture was stirred for 30 min. Calcium carbonate was then added and the mixture was dispersed at 1000 r / min for 30 min to prepare a treatment solution. The molar ratio of phosphoric acid to calcium hydroxide was 3:3, and the amount of calcium carbonate was 17% of the total weight of calcium hydroxide and phosphoric acid. (2) The treated liquid was dried in an oven at 120°C until it did not flow, and then placed in a muffle furnace, oxygen was introduced, and the temperature was raised to 280°C at a rate of 1°C / min, kept constant for 2 hours, and then continued to be raised to 950°C and kept at this temperature for 60 minutes.

[0041] Preparation Example 4: The difference from Preparation Example 1 is that the spinning solution also contains cobalt acetate solution, which is prepared by mixing 0.1 g of cobalt acetate and 2 mL of DMF. The mass ratio of cobalt acetate to polyacrylonitrile is 0.05:1. The cobalt acetate solution is added to the polyacrylonitrile solution and homogenized for 30 minutes to obtain the spinning solution.

[0042] Preparation Example 5: The difference from Preparation Example 1 is that the spinning solution also contains cobalt acetate solution, which is prepared by mixing 0.25 g of cobalt acetate and 5 ml of DMF. The mass ratio of cobalt acetate to polyacrylonitrile is 0.125:1. The cobalt acetate solution is added to the polyacrylonitrile solution and homogenized for 30 minutes to obtain the spinning solution. Example

[0043] Example 1: A deodorizing air freshener, the raw material percentages are as follows: 10% deodorant, 10% edible alcohol, 2% edible flavoring, 5% propellant, and pure water is used to make up to 100%, wherein the propellant is nitrogen, the edible alcohol concentration is 95%, and the edible flavoring is apple flavoring. The amount of raw materials used for the deodorizing agent is shown in Table 1, wherein the adsorbent in Table 1 is activated carbon powder, the water-soluble zinc salt includes amino acid zinc and zinc lactate in a mass ratio of 1:0.5, the amino acid includes methionine and lysine in a mass ratio of 1:1, and the soybean seed extract is selected from Xi'an Feida Biological, and the soybean isoflavone content is 40%.

[0044] The preparation method of the above-mentioned deodorizing air freshener comprises the following steps: Tea seed oil and soybean seed extract were stirred at a speed of 500 r / min for 30 minutes to prepare solution A; amino acids, water-soluble zinc salt, adsorbent and water were mixed and stirred at a speed of 500 r / min for 30 minutes to prepare solution B; solution A was added to solution B and stirred at a speed of 2000 r / min for 10 minutes to prepare a deodorant; Add edible alcohol, deodorant and edible flavoring into the reactor in sequence, stir at a speed of 50 r / min until completely dissolved, to prepare a base liquid; Sterile pure water was added to the base liquid, and the mixture was stirred at a speed of 50 r / min for 10 min to obtain a feed liquid; The qualified material liquid is passed through a 200-mesh gauze and filled into an aerosol can, which is sealed with an aerosol valve and flushed with nitrogen to obtain the finished product.

[0045] Table 1 Raw material formula of deodorant in Examples 1-6 Example 2: A deodorizing air freshener, the raw material percentages are as follows: 10% deodorant, 13% edible alcohol, 1% edible flavoring, and 3% propellant, which are supplemented with pure water to 100%, wherein the propellant is nitrogen, the edible alcohol concentration is 95%, and the edible flavoring is apple flavoring. The amounts of the raw materials for the deodorizing agent are shown in Table 1, wherein the adsorbent in Table 1 is activated carbon powder, the water-soluble zinc salt includes amino acid zinc and zinc lactate in a mass ratio of 1:0.5, the amino acid includes methionine and lysine in a mass ratio of 1:1, and the soybean seed extract is selected from Xi'an Feida Biological, and the soybean isoflavone content is 40%.

[0046] The preparation method of the above-mentioned deodorizing air freshener comprises the following steps: Tea seed oil and soybean seed extract were stirred at a speed of 500 r / min for 30 minutes to prepare solution A; amino acids, water-soluble zinc salt, adsorbent and water were mixed and stirred at a speed of 500 r / min for 30 minutes to prepare solution B; solution A was added to solution B and stirred at a speed of 2000 r / min for 10 minutes to prepare a deodorant; Add edible alcohol, deodorant and edible flavoring into the reactor in sequence, stir at a speed of 60 r / min until completely dissolved, to prepare a base liquid; Sterile pure water was added to the base liquid, and the mixture was stirred at a speed of 60 r / min for 12 min to obtain a feed liquid; The qualified material liquid is passed through a 200-mesh gauze and filled into an aerosol can, which is sealed with an aerosol valve and flushed with nitrogen to obtain the finished product.

[0047] Example 3-6: A deodorizing air freshener, which differs from Example 1 in that the amounts of the raw materials used in the deodorizing agent are as shown in Table 1.

[0048] Example 7: A deodorizing air freshener, which differs from Example 1 in that the water-soluble zinc salt is zinc lactate.

[0049] Example 8: A deodorizing air freshener, which differs from Example 1 in that the water-soluble zinc salt is zinc sulfate.

[0050] Example 9: A deodorizing air freshener, which differs from Example 1 in that the amino acids are all methionine.

[0051] Example 10: A deodorizing air freshener, which differs from Example 1 in that the amino acid is glutamic acid.

[0052] Example 11: A deodorizing air freshener, which differs from Example 1 in that the adsorbent is polyacrylonitrile-based nano-carbon fibers loaded with porous calcium phosphate, and is prepared according to Preparation Example 1 of the adsorbent.

[0053] Example 12: A deodorizing air freshener, which differs from Example 1 in that the adsorbent is polyacrylonitrile-based nano-carbon fiber and is prepared according to Preparation Example 2.

[0054] Example 13: A deodorizing air freshener, which differs from Example 1 in that the adsorbent is porous calcium phosphate and is prepared according to Preparation Example 3.

[0055] Example 14: A deodorizing air freshener, which differs from Example 11 in that the adsorbent is polyacrylonitrile-based nano-carbon fibers loaded with porous calcium phosphate and is prepared according to Preparation Example 4.

[0056] Example 15: A deodorizing air freshener, which differs from Example 11 in that the adsorbent is polyacrylonitrile-based nano-carbon fibers loaded with porous calcium phosphate and is prepared according to Preparation Example 5.

[0057] Comparative Example Comparative Example 1: A deodorizing air freshener, which differs from Example 1 in that an equal amount of water is used in the adsorbent instead of tea seed oil.

[0058] Comparative Example 2: A deodorizing air freshener, which differs from Example 1 in that an equal amount of soybean seed extract is used in the adsorbent instead of tea seed oil.

[0059] Comparative Example 3: A deodorizing air freshener, which differs from Example 1 in that an equal amount of tea seed oil is used instead of amino acid.

[0060] Comparative Example 4: A deodorizing air freshener, which differs from Example 1 in that an equal amount of tea seed oil is used to replace the water-soluble zinc salt.

[0061] Performance testing The deodorizing air freshener prepared in Example 1 was subjected to an acute oral toxicity test and multiple skin irritation tests. The test methods are as follows: 1. Acute oral toxicity test (1) Test substance: ① Test substance: the deodorizing air freshener prepared in Example 1; ② Test solution: weigh 5 g of the test substance, add sterile water to make up to 20 ml and mix well for testing.

[0062] (2) Experimental animals and breeding environment: ① Experimental animals: SPF-grade KM mice, 5 females and 5 males, weighing 18-22 g; ② Feed source: Feed was purchased from Guangdong Medical Experimental Animal Center; ③ Breeding environment: temperature 20-26°C, relative humidity 40-70%.

[0063] (3) Methods: ① Test method: Chapter 6-2 of the 2015 edition of the Safety Technical Specifications for Cosmetics; ② Dosage level: According to the method requirements, a single limit method was used (i.e., 10 animals were given a dose of 5000 mg / kg·BW).

[0064] (4) Experimental Procedure: Before the experiment, the experimental animals were fasted overnight with no restriction on drinking water. During the experiment, the animals were weighed, randomly divided into groups, and administered orally once with a volume of 0.2 ml / 10 g body weight. After oral administration, the animals were fasted for 3 hours and then given a normal diet. After exposure, each animal was individually and comprehensively recorded, and the signs of poisoning and mortality of the experimental animals were observed for 14 days. The animals were weighed on days 0, 7, and 14 of administration.

[0065] (5) Result evaluation: Calculate LD50 based on the data and make a judgment according to the oral toxicity grading table. For example, if there is no death within 14 days after a single oral gavage dose of 5000 mg / kg·BW, it can be determined that the LD50 is greater than 5000 mg / kg·BW.

[0066] (6) The test results are shown in Table 2.

[0067] Table 2 Results of acute oral toxicity test of deodorant air fresheners Note: During the 14-day observation period, no obvious poisoning symptoms or deaths were observed in any of the test animals.

[0068] (7) Conclusion: Under the conditions of this experiment, the acute oral toxicity LD50 of the test substance to SPF-grade KM mice is greater than 5000 mg / kg·BW, which is practically non-toxic.

[0069] 2. Multiple skin irritation tests (1) Test substance: the air freshener product prepared in Example 1, (2) Experimental animals and breeding environment: ① Experimental animals: 4 female ordinary New Zealand rabbits, weighing 2-2.2 kg; ② Animal source: The experimental animals were provided by the Guangdong Medical Experimental Animal Center (Sanshui Base); ③ Feed source: purchased from the Guangdong Medical Experimental Animal Center; Breeding environment: temperature 20-26°C, relative humidity 40-70%.

[0070] (3) Inspection method: Chapter 6-4 of the 2015 edition of the Technical Specifications for Safety of Cosmetics.

[0071] (4) Test Procedure: 24 hours before the test, shave the hair on both sides of the rabbit's spine. The hair removal area is approximately 3 cm × 3 cm on each side. The next day, apply 0.5 ml of the test substance to one side of the skin. The other side of the skin is used as a negative control. Apply the test substance once a day for 14 consecutive days. Remove any residual test substance with water before each application. Observe and score the results 1 hour later.

[0072] (5) Result evaluation: Observe the results 24 hours after each application and score the skin reaction according to the skin irritation reaction scoring table. Calculate the average score per animal per day according to the following formula, and determine the skin irritation intensity according to the skin irritation intensity grading standard table: Average score per animal per day = [(Σ erythema and edema score) / number of animals tested] / 14.

[0073] (6) The test results are shown in Table 3.

[0074] Table 3 Multiple skin irritation test results of deodorant air freshener (7) Conclusion: Under the conditions of this experiment, the test substance was non-irritating in multiple skin irritation tests on New Zealand rabbits.

[0075] The deodorizing air fresheners prepared in the examples and comparative examples were subjected to formaldehyde removal and ammonia removal tests, and the test results were recorded in Table 4. The test methods are as follows: 1. Acetaldehyde removal rate: Spray 300ml of sample evenly on 3 sheets of 1m in size 2 On the base paper, dry naturally and put it into 1.5m 3 The test is carried out in the test chamber, and the circulation fan in the chamber is turned on during the test. The test time is 24 hours.

[0076] 2. Ammonia removal rate: Spray 300ml of sample evenly on 3 sheets of 1m in size 2 On the base paper, dry naturally and put it into 1.5m 3 The test is carried out in the test chamber. The circulation fan in the chamber is turned on during the test. The test time is 24 hours.

[0077] 3. Formaldehyde removal rate: Spray 300ml of sample evenly three times on three sheets of 1m 2 On the base paper, dry naturally and put it into 1.5m 3 The test is carried out in the test chamber. The circulation fan in the chamber is turned on during the test. The test time is 24 hours.

[0078] Table 4 Purification test results of deodorizing air freshener Combining Examples 1-5 and the data in Table 4, it can be seen that the deodorant made from a specific amount of raw materials, using edible alcohol, pure water, etc. as solvents, can achieve an air purification effect in a very short time, eliminating odors at the source, and the ingredients are non-toxic and harmless, and will not cause secondary pollution.

[0079] In Example 7, only zinc lactate was used as the water-soluble zinc salt, and zinc lactate and amino acid zinc were not used in combination. It can be seen that the purification effect of the prepared deodorizing air freshener on aldehydes and ammonia was slightly reduced.

[0080] In Example 8, zinc sulfate is used as the water-soluble zinc salt. Compared with the combination of zinc lactate and amino acid zinc in Example 1, the deodorizing air freshener prepared by zinc sulfate alone as the water-soluble zinc salt has a weaker purification effect on formaldehyde, acetaldehyde and ammonia.

[0081] In Example 9, methionine was used alone. Compared with Example 1, the deodorizing air freshener prepared in Example 8 had a decreased ability to purify and degrade harmful substances such as formaldehyde and acetaldehyde.

[0082] In Example 10, glutamic acid is used as the amino acid. Compared with Example 1 in which methionine and lysine are used, the deodorizing air freshener prepared in Example 10 has a reduced ability to purify gases such as formaldehyde.

[0083] In Example 11, polyacrylonitrile-based nano-carbon fibers loaded with porous calcium phosphate are used as an adsorbent. Compared with the use of activated carbon powder as an adsorbent in Example 1, the deodorizing air freshener prepared in Example 11 has greater adsorption and degradation capabilities for gases such as formaldehyde and acetaldehyde.

[0084] In Example 12, polyacrylonitrile-based nano-carbon fibers were used as the adsorbent, and in Example 13, porous calcium phosphate was used as the adsorbent. The data in Table 4 show that Example 13 has a catalytic and degradation effect closer to that of Example 1, and the catalytic and degradation ability of the deodorizing air freshener in Example 12 on harmful gases is significantly weakened.

[0085] In Example 14 and Example 15, porous calcium phosphate was loaded on polyacrylonitrile-based nano-carbon fibers prepared in Preparation Example 4 and Preparation Example 5, respectively. Cobalt acetate was also added when preparing the polyacrylonitrile nanofibers. Compared with Example 11, the deodorizing air fresheners prepared in Example 14 and Example 15 significantly increased the purification and removal rates of polluting gases such as formaldehyde, acetaldehyde and ammonia.

[0086] In Comparative Example 1, pure water was used to replace the tea seed oil in the deodorant. Compared with Example 1, the deodorizing air freshener prepared in Comparative Example 1 had significantly lower purification capabilities for formaldehyde, acetaldehyde and ammonia.

[0087] In Comparative Example 2, soybean seed extract was used instead of tea seed oil. Compared with Example 1, the deodorizing air freshener product prepared in Comparative Example 2 had a slightly weakened ability to purify harmful gases such as formaldehyde.

[0088] In Comparative Example 3, an equal amount of tea seed oil was used to remove amino acids, and in Comparative Example 4, an equal amount of tea seed oil was used to replace water-soluble zinc salt. The data in Table 4 show that the deodorizing air fresheners prepared in Comparative Example 3 and Comparative Example 4 have reduced purification and deodorizing effects on gases such as formaldehyde.

[0089] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A deodorizing air freshener, characterized in that: The raw materials include the following weight percentages: deodorant 2-10%, edible alcohol 10-20%, edible flavor 0.1-2%, propellant 0.1-5%, and the balance is pure water; The deodorant comprises the following raw materials in percentage by weight: 13-17% of tea seed oil, 20-30% of amino acid, 10-20% of adsorbent, 5-10% of soybean seed extract, 2-5% of water-soluble zinc salt, and 30-40% of water.

2. The deodorizing air freshener according to claim 1, characterized in that: The mass ratio of the tea seed oil to the soybean seed extract in the deodorant is 1.75-2:

1.

3. The deodorizing air freshener according to claim 1, characterized in that: The amino acid is at least one of methionine, lysine, glutamic acid, threonine and tyrosine.

4. The deodorizing air freshener according to claim 1, characterized in that: The water-soluble zinc salt is selected from at least one of zinc sulfate, zinc chloride, zinc nitrate, zinc lactate, zinc amino acid, zinc ricinoleate and zinc gluconate.

5. The deodorizing air freshener according to claim 4, characterized in that: The water-soluble zinc salt comprises amino acid zinc and zinc lactate in a mass ratio of 1:0.3-0.

5.

6. The deodorizing air freshener according to claim 1, characterized in that: The adsorbent is polyacrylonitrile-based nano-carbon fibers loaded with porous calcium phosphate.

7. The deodorizing air freshener according to claim 6, characterized in that: The raw materials of the polyacrylonitrile-based nano-carbon fibers include polyacrylonitrile and cobalt acetate in a mass ratio of 1:0.05-0.

125.

8. The deodorizing air freshener according to claim 1, characterized in that: The propellant is one of nitrogen, propane, n-butane, isobutane and dimethyl ether.

9. The method for preparing the deodorizing air freshener according to any one of claims 1 to 8, characterized in that: The following steps are involved: Weigh edible alcohol, deodorant and edible flavoring in sequence and add them into the reactor, stir at a speed of 50-60 r / min until completely dissolved to prepare the base liquid; Add pure water to the base liquid and stir at a speed of 50-60 r / min for 10-12 minutes to prepare a feed liquid; After the liquid material is tested and found to be qualified, it is passed through a 200-mesh gauze, filled, assembled with an aerosol valve to seal the opening, and the propellant is injected to obtain the finished product.

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