High-temperature-resistant high-content deodorant and preparation method thereof

Abstract

The application discloses a high-content deodorant resistant to high and low temperatures and a preparation method, and belongs to the technical field of deodorants. The deodorant comprises the following substances in percentage by weight: 10-50% of zinc amino acid, 5-40% of an activator, 0.5-2.5% of a surfactant, and the balance of water; wherein the activator is one or more of amino acid, organic amine and organic sodium salt. The content of the zinc amino acid in the application is high, between 10-50%, the deodorizing and sterilizing performance is good, the deodorant is safe and non-toxic, can be 100% biodegraded, and has a wide application field, and can be used for deodorizing pet, pet hospitals, household environments, cosmetics, sewage treatment stations, garbage piles and breeding farms.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of deodorant, in particular to a green and safe high-content deodorant with high and low temperature resistance for environment, home, pets and cosmetics and a preparation method thereof. BACKGROUND

[0002] The malodor generated by factories, garbage piles, sewage treatment ponds, farms, pet feces and the like seriously affects production and life, and therefore people have more and more demand for deodorants. There are various deodorants on the market, but the quality is uneven. Common odor gases are nitrides, sulfides, aldehydes and fatty acids. Nitrides are mainly ammonia and methylamine, which are mainly generated in toilets, animal feces and farms. Sulfides are mainly hydrogen sulfide and mercaptans, which are mainly generated in household garbage and sewers.

[0003] There are various deodorants, but according to the deodorizing mechanism, deodorants can be roughly divided into the following categories: physical deodorants, chemical deodorants, biological deodorants and plant deodorants.

[0004] ① Physical deodorants: odor is removed by physical adsorption of porous substances or simple fragrance to cover odor. Since the adsorption time is long, the deodorization speed is slow, and the porous substance has a saturation effect on adsorbing odor. If not replaced in time, it will cause secondary pollution. Since adsorption has selectivity, it may not have adsorption effect on a certain type of gas. When the fragrance is used to cover the odor, the odor cannot be covered after the fragrance evaporates, which will also cause secondary pollution.

[0005] ②Chemical deodorant: through oxidation, reduction, addition, condensation and other chemical reactions, the odor components are decomposed, deodorization is rapid and effective, and it is the most widely used deodorant at present. Commonly used are zinc ricinoleate, soybean ethyl sulfate ethyl morpholine, chlorine dioxide, photocatalyst, organic acid, etc. Zinc ricinoleate contains double bonds and zinc atoms. The double bond removes odor through bonding mechanism, and the activated zinc atom can form a strong chemical bond with nitrogen and sulfur atoms in the odor to eliminate the odor. It is a new type of deodorant material with high efficiency and environmental protection, and has the characteristics of non-toxic, easy biodegradation, etc. However, it will leave a strong castor oil acid taste after use, which will cause discomfort and easily cause secondary pollution. In addition, the product cost is high, and additional additives need to be added when diluting for use, further increasing the use cost. Soybean ethyl sulfate ethyl morpholine is a unique cationic surfactant, which can reduce the concentration of odor molecules in the vapor phase by coordination or neutralization of odor molecules, thereby removing odor. However, it is expensive and has high cost. Therefore, it is generally used in small amounts during the addition process, but the reduction of the amount will weaken the deodorizing effect of the product. As a strong oxidizing agent, chlorine dioxide can oxidize odor substances in a short time and convert them into odorless substances. However, chlorine dioxide can react explosively with many chemicals, and is very sensitive to heat, vibration, impact and friction, and can easily decompose and explode. Photocatalyst is a kind of light semiconductor with nano TiO2 as raw material. Under the action of light, free hydroxyl and active oxygen are generated, which has strong photo-oxidation and reduction function, and can effectively degrade formaldehyde, benzene, toluene, xylene, ammonia and other toxic and harmful gases, and can also effectively kill a variety of bacteria. Organic acid removes odor by low pH value. Commonly used are citric acid, acetic acid and acetic acid. Among them, acetic acid has good acid buffering and is rich in wood oil and phenols (o-methoxyphenol, cresol, etc.), which can play a role in perfuming and sterilization.

[0006] ③ Biological deodorant: using microbial flora metabolism or its metabolites to degrade odor, but the deodorization time is long. Microbial deodorization has strict requirements on temperature, pH, dissolved oxygen, etc. Through the metabolic activity of microorganisms, the odor is degraded, and the environmental protection is good, but the extraction process of biological deodorant raw materials is complex, the cost is high, and the deodorization effect is slow. The commonly used biological deodorant materials are mainly microbial enzymes. Microbial enzymes are active enzymes purified from fermentation broth, which are used for air deodorization treatment in specific environments. For example, desulfurization oxidase can be used as a catalyst for hydrogen sulfide oxidation reaction, which can reduce the reaction energy of hydrogen sulfide oxidation and convert hydrogen sulfide into nontoxic and harmless sulfate ions to eliminate the odor of hydrogen sulfide. For example, CN111514740B discloses a biological deodorant and a preparation method thereof. The biological deodorant comprises the following raw materials: biological enzymes, anaerobic flora, aerobic flora, plant extract, enzyme solution, purification factor, volcanic mud, titanium dioxide fiber, acidic silica sol, azobisdimethylformamide, and noble metal active component. The biological deodorant has many types of raw materials, complex production process, and strict preservation conditions of biological enzymes and plant extract, which are easy to inactivate. At the same time, the plant extract contains a large amount of polyphenols, which can react with hydroxyl radicals generated in the photocatalytic reaction, resulting in low quantum efficiency. The overall cost of the formula is high, and the overall stability of the formula needs to be studied.

[0007] ④ Plant deodorant: extracting effective components from roots, stems, leaves, flowers, and fruits of plants, mainly chemical substances similar to o-diphenol, p-diphenol, and m-diphenol, which can react with odor molecule groups, weaken the chemical bonds in odor molecules, and generate odorless and non-toxic substances. It has good removal effect on ammonia, hydrogen sulfide, etc. This type of deodorant has good environmental protection and rapid deodorization reaction. The disadvantages are that the plant sources are more, the components are complex and diverse, the market products are uneven, the actual selection of users is disturbed, the extraction process is complicated, it is easy to spoil, a large amount of antioxidants, preservatives, and antibacterial agents need to be added, the plant extract with biological enzymes is limited by the temperature of the use environment, and high or low temperature cannot have good deodorization ability. The cost of use is high. Commonly used are tea extract, sasanqua extract, and fentanyl, etc. Tea extract mainly contains polyphenols such as catechins. The basic structure of catechins is a di-connected (or adjacent) phenol group phenylpyran derivative. The hydroxyl group on the catechin ring has strong polarity, which can easily combine with hydrogen sulfide gas to generate new compounds. At the same time, the hydroxyl group can provide H +It can combine with nitrogen atoms in ammonia molecules to form ammonium salts, thus removing ammonia gas. The main components of yucca extract are yucca saponins, yucca phenols, and polysaccharides. Saponins, as urease inhibitors, can reduce the degradation of nitrogenous substances into ammonia gas, while the macromolecules and active groups in yucca extract can adsorb ammonia molecules. Polyphenols can bind to amino groups. Polysaccharides can promote the synthesis of microbial proteins from ammonia, thus reducing ammonia production and increasing ammonia consumption and utilization, thereby reducing the ammonia content in odorous gases. Phytoncide's essential components are monoterpenes, sesquiterpenes, and diterpenes, which have a distinctive aroma, can mask odors, and also have bactericidal and insecticidal effects. For example, CN112870419A discloses a method for preparing a plant-based deodorant. The main components are plant extracts from peach wood, peach pits, pear pits, rice husks, bamboo, and cypress wood; water; aloe vera extract; sophora flavescens extract; pine needle extract; artemisia argyi extract; lemon extract; jasmine extract; rose extract; a penetrant; and a surfactant. The raw materials for this deodorant are mostly plant extracts, the extraction process is complex, and the plant extracts are subject to strict storage conditions.

[0008] Zinc possesses excellent bactericidal and deodorizing properties, especially organic zinc acids. For example, CN108159865A discloses an environmentally friendly deodorant containing active zinc atoms, comprising, by weight, 5-8 parts of zinc organic acid salt, 3-5 parts of a coordinating agent, 1-3 parts of an organophosphorus compound, 1-5 parts of a solubilizer, 0-2 parts of a fragrance agent, 0.1-2 parts of a pH adjuster, and 70-90 parts of water. This deodorant is effective against various malodorous gases, including ammonia, hydrogen sulfide, and sulfides. However, after use, a strong ricinoleate odor was found, which could cause secondary environmental pollution. CN115397477A discloses a deodorant made by dissolving amino acids, zinc compounds (or zinc amino acids), and iodine compounds in an aqueous solvent. The zinc amino acids in this deodorant have a good removal effect on various odorous gases; however, iodides are unstable under acidic conditions, and the solution is prone to discoloration, affecting the deodorizing effect. CN110810434A discloses an AB deodorizing and bactericidal agent, wherein agent A includes organic zinc salt, solubilizer (organophosphonate), pH adjuster (arginine, lysine and histidine), surfactant (OP-10, Tween-80, triethanolamine, lactic acid, propylene glycol and glycerol, etc.) and deionized water. The content of organic zinc salt is 2-8%. This formula only has good solubility when the content of amino acid zinc is less than 10%. However, when the content of amino acid zinc is higher than 20%, the stability of the deodorizer is poor, and it is more likely to separate and precipitate at low temperature, which affects its use.

[0009] The concentration of the existing amino acid zinc product is generally low, the content of amino acid zinc is generally below 10%, commonly 3%, and the product is unstable at low temperature and high temperature, easy to generate precipitate, and the deodorization effect is poor. High concentration of amino acid zinc deodorant is more convenient in preparation, transportation and storage, and can save cost, and the solution is stable at low temperature without heating and dissolution, further dilution production efficiency and cost, so it has good market prospect. However, the existing amino acid zinc deodorant cannot achieve high concentration and low temperature stability at the same time, so there is an urgent need for a deodorant with high raw material safety, good deodorization effect and high and low temperature stability. SUMMARY

[0010] In order to solve the above problems, the application provides a high content deodorant with high and low temperature resistance and a preparation method, which can achieve solution stability at low temperature, good deodorization effect and high safety performance.

[0011] In order to achieve the above purpose, the application is realized by the following technical scheme:

[0012] A high content deodorant with high and low temperature resistance comprises the following substances by weight percentage: 10%-50% of amino acid zinc, 5%-40% of activator, 0.5%-2.5% of surfactant, and the balance of water.

[0013] Further, the amino acid zinc is one or more of zinc methionine, zinc aspartate, zinc glycinate, zinc threonine, zinc lysine and pyroglutamic acid zinc.

[0014] Further, the activator is one or more of amino acid, organic amine and organic sodium salt.

[0015] Further, the amino acid is one or more of lysine, glycine, histidine, alanine, arginine, isoleucine, threonine and phenylalanine.

[0016] Further, the organic amine is one or more of monoethanolamine, diethanolamine, triethanolamine, tetrahydroxypropyl ethylenediamine and tetrahydroxyethyl ethylenediamine.

[0017] Further, the organic sodium salt is one or more of polylysine ethylene diphosphonic acid sodium, ethylenediaminetetraacetic acid disodium, hydroxyethylidene diphosphonic acid tetrasodium, iminodisuccinic acid tetrasodium, ethylenediaminetetramethylene phosphonic acid sodium, diethylenetriamine pentamethylene phosphonic acid sodium, methyl glycine ethanedioic acid trisodium and glutamic acid ethanedioic acid tetrasodium.

[0018] Further, the structure formula of the polylysine ethylene diphosphonic acid sodium is: In the formula, n is 25-30.

[0019] Further, the surfactant is one or more of lauryl dimethylaminoethyl betaine, polyethylene glycol sorbitan fatty acid ester, polyoxyethylene dialkyl phosphate, and fatty alcohol polyoxyethylene ether.

[0020] Further, the surfactant is one or both of lauryl dimethylaminoethyl betaine and fatty alcohol polyoxyethylene ether.

[0021] The application further discloses a preparation method of the high-content deodorant resistant to high and low temperatures.

[0022] The application discloses a high-content deodorant resistant to high and low temperatures and a preparation method thereof.

[0023] (1) The activator added in the application is amino acid, organic amine and organic sodium salt. The addition of the amino acid and the organic amine can improve the pH value of the whole deodorant, improve the solubility of the zinc amino acid and make the zinc amino acid maintain high stability at low temperature.

[0024] (2) The addition of the organic sodium salt, especially sodium ε-polylysine ethylene diphosphonate and sodium α-polylysine ethylene diphosphonate, in the application. The organic sodium salt contains ε-polylysine, α-polylysine and sodium diphosphonate. The ε-polylysine and the α-polylysine have the effects of sterilization and solubilization, and the sodium diphosphonate has the effects of solubilization and activation of zinc ions. After the polylysine and the sodium diphosphonate are bonded, the substance formed by the amino acid group and the phosphonic acid group has better solubilization effect and sterilization effect at high concentration and low temperature, and can effectively avoid the solution stability of the high-concentration deodorant at low temperature. The pH value, content and deodorization effect of the deodorant are not affected after the deodorant is placed at 60 ℃ for 30 days, at 40 ℃ for 3 months and at 4 ℃ for one month. After the deodorant is frozen at-20 ℃ and then naturally dissolved at room temperature, the solution is still clear and transparent. When the deodorant is used, water is directly added for dilution, and no additional solubilizer needs to be added.

[0025] (3) The organic sodium salt of the activator has the properties of complex solubilization, solubility limit effect and crystal lattice distortion, has certain dispersion and suspension force, has the functions of scale inhibition, corrosion inhibition and scale dissolution, and is not inactivated at a high temperature (such as 200 ℃). The activator itself is basically non-toxic and has no pollution.

[0026] (4) The surfactant has high stability and is not easily affected by strong electrolytes, acids and bases. After the surfactant is compounded with the activator, the solubility and compatibility of the zinc amino acid can be further improved, the surfactant can be mixed and used, has good compatibility and does not strongly adsorb on the solid surface.

[0027] (5) The amino acid zinc content in the present application is high, between 10%-50%, with good deodorization and sterilization performance, safety and non-toxic, and 100% biodegradable. The activated zinc atom in the present application can form a very strong chemical bond with the nitrogen and sulfur atoms in the odor to eliminate the odor. The amino acid has amino (-NH2) and carboxyl (-COOH) in the molecule, and the deodorization effect on ammonia, acetic acid, aldehydes, etc. is exerted due to the presence of these functional groups. Even with high dilution, it still has good deodorization effect on mercaptans, sulfides, acids, ammonia, aldehydes, hydrogen sulfide, etc. It has wide application fields and can be used for deodorization of pets, pet hospitals, home environment, cosmetics, sewage treatment stations, garbage piles, and breeding farms. DETAILED DESCRIPTION

[0028] In order for those skilled in the art to better understand the present application, the technical solutions of the present application will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] A high-temperature-resistant and low-temperature-resistant high-content deodorant includes the following substances by weight percentage: amino acid zinc 10%-50%, activator 5%-40%, surfactant 0.5%-2.5%, and the balance is water.

[0030] As a preferred embodiment, a high-temperature-resistant and low-temperature-resistant high-content deodorant includes the following substances by weight percentage: amino acid zinc 10%-20%, activator 5%-10%, surfactant 0.5%-1%, and the balance is water.

[0031] As a preferred embodiment, a high-temperature-resistant and low-temperature-resistant high-content deodorant includes the following substances by weight percentage: amino acid zinc 20%-30%, activator 5%-15%, surfactant 0.5%-1%, and the balance is water.

[0032] As a preferred embodiment, a high-temperature-resistant and low-temperature-resistant high-content deodorant includes the following substances by weight percentage: amino acid zinc 30%-40%, activator 10%-30%, surfactant 1%-2%, and the balance is water.

[0033] As a preferred embodiment, a high-temperature-resistant and low-temperature-resistant high-content deodorant includes the following substances by weight percentage: amino acid zinc 40%-50%, activator 15%-40%, surfactant 1%-2.5%, and the balance is water.

[0034] Further, the amino acid zinc is one or more of methionine zinc, aspartic acid zinc, glycine zinc, threonine zinc, lysine zinc, and pyroglutamic acid zinc. Preferably, the amino acid zinc is one or more of methionine zinc, aspartic acid zinc, and glycine zinc.

[0035] Further, the activator is one or more of amino acid, organic amine, and organic sodium salt, and more preferably, the activator comprises at least the organic sodium salt.

[0036] As a preferred embodiment, the activator is an amino acid. The amino acid is one or more of lysine, glycine, histidine, alanine, arginine, isoleucine, threonine, and phenylalanine.

[0037] As a preferred embodiment, the activator is an organic sodium salt. The organic sodium salt is one or more of polylysine ethylenediphosphonic acid sodium, ethylenediaminetetraacetic acid disodium, hydroxyethylenediphosphonic acid tetrasodium, iminodisuccinic acid tetrasodium, ethylenediaminetetramethylene phosphonic acid sodium, diethylenetriamine pentamethylene phosphonic acid sodium, methylglycine diacetic acid trisodium, and glutamic acid diacetic acid tetrasodium.

[0038] More preferably, the activator is polylysine ethylenediphosphonic acid sodium. The polylysine ethylenediphosphonic acid sodium can be ε-polylysine ethylenediphosphonic acid sodium or α-polylysine ethylenediphosphonic acid sodium.

[0039] Specifically, the structure of the polylysine ethylenediphosphonic acid sodium is as follows: wherein n is 25-30.

[0040] Specifically, the preparation method of the polylysine ethylenediphosphonic acid sodium comprises the following steps:

[0041] (1) polylysine and hydroxyethylidene diphosphonic acid (HEDP) are mixed in a reaction kettle according to a mass ratio of 1:1.2, an acidic catalyst is added, the reaction is carried out at a temperature of 100°C for 100-120 min, then the temperature is increased to 105-110°C, formaldehyde is added, and the reaction is carried out for 60-90 min, to obtain polylysine ethylenediphosphonic acid;

[0042] (2) the polylysine ethylenediphosphonic acid obtained in step (1) is subjected to acid-base neutralization reaction with sodium hydroxide according to a molar ratio of 1:4, to obtain polylysine ethylenediphosphonic acid sodium.

[0043] Specifically, the acidic catalyst in step (1) is one of hydrochloric acid, sulfuric acid, and citric acid. Preferably, the acidic catalyst is hydrochloric acid, and the molar ratio of hydrochloric acid to polylysine is (1.5-2):1. More preferably, the molar ratio of hydrochloric acid to polylysine is 2:1.

[0044] Specifically, the molar ratio of formaldehyde to polylysine in step (2) is 2-2.2:1. The molar ratio of formaldehyde to polylysine in this embodiment is preferably 2:1.

[0045] (I) Structure characterization of polylysine sodium ethylene diphosphonate

[0046] The obtained polylysine sodium ethylene diphosphonate was subjected to structure characterization by an infrared spectrometer. It was determined that the infrared spectrum characteristic peaks of the synthesis were: at 1680-1640 cm -1 and 1580-1520 cm -1 , there were strong absorption peaks, which were characteristic peaks of polylysine; in the synthesis, γasPO3 and γsPO3 were split into two groups of very strong absorption peaks (1110 cm -1 , 1065 cm -1 and 985 cm -1 , 955 cm -1 ), this splitting phenomenon was attributed to the non-equivalence of the two PO3 2- . Moreover, a clear and visible weak sharp absorption peak appeared at 880 cm -1 , this P-O-H could only be produced when the intramolecular alcohol hydroxyl proton formed intramolecular hydrogen bond with the completely ionized phosphoric acid group in the completely ionized ligand, the appearance of 1135 cm -1 (sh) and 1055 cm -1 (sh) could further prove it, and there were no C-O and O-H characteristic peaks in the infrared spectrum, so it could be indicated that the synthesized substance was the target product of the structure.

[0047] (II) Solubility evaluation of polylysine sodium ethylene diphosphonate:

[0048] The solubility of polylysine sodium ethylene diphosphonate was 852 g / L (solubility test method according to Chinese Pharmacopoeia (2020 edition)).

[0049] (III) Influence of thermal stability of polylysine sodium ethylene diphosphonate:

[0050] The polylysine sodium ethylene diphosphonate was placed in a 120℃ environment for 24h, and no decomposition was found after detection, indicating that it had good thermal stability.

[0051] (IV) Toxicity test

[0052] The polylysine sodium ethylene diphosphonate was prepared into an aqueous solution, and the oral LD 50 of rats was obtained by oral test of rats, which was >2.13 g / kg, and it was safe and high.

[0053] As one of the preferred embodiments, the activator is an organic amine. The organic amine is one or more of monoethanolamine, diethanolamine, triethanolamine, tetrahydroxypropyl ethylenediamine, tetrahydroxyethyl ethylenediamine.

[0054] As one of the preferred embodiments, the activator is a mixture of amino acid and organic sodium salt.

[0055] It should be further noted that the surfactant is one or more of lauryl dimethyl amino acetic betaine, polyethylene glycol sorbitan fatty acid ester, polyoxyethylene dialkyl phosphate ester, fatty alcohol polyoxyethylene ether. The present application is preferably lauryl dimethyl amino acetic betaine and / or fatty alcohol polyoxyethylene ether.

[0056] Example 1

[0057] A method for preparing a high-content deodorant resistant to high and low temperature, comprising the following steps: at room temperature, the activator and pure water are put into the reaction kettle, and slowly stirred until completely dissolved; then the surfactant and zinc amino acid are sequentially added, and the solution is formed after completely dissolved, to obtain a high-content deodorant resistant to high and low temperature.

[0058] Example 2

[0059] A high-content deodorant resistant to high and low temperature, comprising the following components: 10% of zinc methionine, 5% of glycine, 0.5% of lauryl dimethyl amino acetic betaine, and the balance of water, calculated based on 100% by weight.

[0060] Example 3

[0061] A high-content deodorant resistant to high and low temperature, comprising the following components: 20% of zinc threonine, 5% of lysine, 5% of α-polylysine ethylene diphosphonic acid sodium (C2H3O6P2Na4(C6H 12 N2O) 30 ) 0.5%, and the balance of water, calculated based on 100% by weight.

[0062] Example 4

[0063] A high-content deodorant resistant to high and low temperature, comprising the following components: 30% of zinc lysine, 10% of arginine, 15% of diethanolamine, 0.8% of C12 fatty alcohol polyoxyethylene ether, and the balance of water, calculated based on 100% by weight.

[0064] Example 5

[0065] A high-content deodorant resistant to high and low temperature, comprising the following components: 40% of zinc pyroglutamic acid, 5% of α-polylysine ethylene diphosphonic acid sodium (C2H3O6P2Na4(C6H 12 N2O) 2820%, triethanolamine 5%, C12 fatty alcohol polyoxyethylene ether 1%, the balance being water.

[0066] Example 6

[0067] A high content deodorant resistant to high and low temperature, comprising the following components: zinc aspartate 50%, glycine 5%, α-polylysine ethylenediphosphonic acid sodium (C2H3O6P2Na4(C6H 12 N2O) 25 23%, tetrahydroxypropyl ethylenediamine 3%, lauryl dimethylaminoethyl betaine 2%, the balance being water.

[0068] Example 7

[0069] A high content deodorant resistant to high and low temperature, comprising the following components: zinc aspartate 50%, glycine 5%, α-polylysine ethylenediphosphonic acid sodium (C2H3O6P2Na4(C6H 12 N2O) 30 25%, lauryl dimethylaminoethyl betaine 2%, the balance being water.

[0070] Example 8

[0071] A high content deodorant resistant to high and low temperature, comprising the following components: zinc aspartate 50%, glycine 5%, α-polylysine ethylenediphosphonic acid sodium (C2H3O6P2Na4(C6H 12 N2O) 25 5%, lauryl dimethylaminoethyl betaine 0.5%, the balance being water.

[0072] Example 9

[0073] A high content deodorant resistant to high and low temperature, comprising the following components: zinc aspartate 50%, glycine 5%, α-polylysine ethylenediphosphonic acid sodium (C2H3O6P2Na4(C6H 12 N2O) 25 5%, lauryl dimethylaminoethyl betaine 0.5%, the balance being water.

[0074] Example 10

[0075] A high content deodorant resistant to high and low temperature, comprising the following components: zinc aspartate 50%, glycine 5%, α-polylysine ethylenediphosphonic acid sodium (C2H3O6P2Na4(C6H 12 N2O) 25 10%, lauryl dimethylaminoethyl betaine 1%, the balance being water.

[0076] Example 11

[0077] A high content deodorant resistant to high and low temperature, comprising the following components: zinc methionine 30%, lysine 10%, epsilon-polylysine ethylenediphosphonic acid sodium (C2H3O6P2Na4(C6H 12 N2O) 25 ) 8%, lauryl dimethylaminoethyl betaine 1%, and the balance being water, calculated based on 100% by weight.

[0078] Example 12

[0079] A high content deodorant resistant to high and low temperature, comprising the following components: zinc methionine 40%, lysine 10%, epsilon-polylysine ethylenediphosphonic acid sodium (C2H3O6P2Na4(C6H 12 N2O) 25 ) 15%, lauryl dimethylaminoethyl betaine 1.5%, and the balance being water, calculated based on 100% by weight.

[0080] Example 13

[0081] A high content deodorant resistant to high and low temperature, comprising the following components: zinc methionine 50%, lysine 10%, epsilon-polylysine ethylenediphosphonic acid sodium (C2H3O6P2Na4(C6H 12 N2O) 25 ) 22%, lauryl dimethylaminoethyl betaine 1.5%, and the balance being water, calculated based on 100% by weight.

[0082] Example 14

[0083] A high content deodorant resistant to high and low temperature, comprising the following components: zinc methionine 50%, lysine 10%, glutamic acid ethanedioic acid tetrasodium 30%, lauryl dimethylaminoethyl betaine 1.5%, and the balance being water, calculated based on 100% by weight.

[0084] Example 15

[0085] A high content deodorant resistant to high and low temperature, comprising the following components: zinc methionine 50%, lysine 10%, methyl glycine ethanedioic acid trisodium 30%, lauryl dimethylaminoethyl betaine 1.5%, and the balance being water, calculated based on 100% by weight.

[0086] Example 16

[0087] A high content deodorant resistant to high and low temperature, comprising the following components: zinc methionine 50%, lysine 10%, iminodisuccinic acid tetrasodium 30%, lauryl dimethylaminoethyl betaine 1.5%, and the balance being water, calculated based on 100% by weight.

[0088] Comparative Example 1

[0089] A deodorant comprising the following components: zinc methionine 20%, lysine 10%, lauryldimethylamino oxyethyl glycine 0.5%, and the balance water, based on 100% by weight.

[0090] Comparative Example 2

[0091] A deodorant comprising the following components: zinc methionine 20%, lysine 5.5%, epsilon-polylysine ethylenediphosphonic acid sodium (C2H3O6P2Na4(C6H 12 N2O) 25 ) 5%, and the balance water, based on 100% by weight.

[0092] Comparative Example 3

[0093] A deodorant comprising the following components: zinc methionine 20%, epsilon-polylysine ethylenediphosphonic acid sodium (C2H3O6P2Na4(C6H 12 N2O) 25 ) 10.5%, and the balance water, based on 100% by weight.

[0094] Comparative Example 4

[0095] A deodorant comprising the following components: zinc methionine 30%, lysine 16%, and the balance water, based on 100% by weight.

[0096] Comparative Example 5

[0097] A deodorant comprising the following components: zinc methionine 30%, lauryldimethylamino oxyethyl glycine 16%, and the balance water, based on 100% by weight.

[0098] Comparative Example 6

[0099] A deodorant comprising the following components: zinc methionine 30%, aminotri(methylene) phosphonic acid sodium 15%, lauryldimethylamino oxyethyl glycine 1%, and the balance water, based on 100% by weight.

[0100] Comparative Example 7

[0101] A deodorant comprising the following components: zinc methionine 30%, dodecylsulfonate 15%, lauryldimethylamino oxyethyl glycine 1%, and the balance water, based on 100% by weight.

[0102] Comparative Example 8

[0103] A deodorant comprising the following components: zinc methionine 30%, C12 fatty alcohol polyoxyethylene ether 15%, lauryldimethylamino oxyethyl glycine 1%, and the balance water, based on 100% by weight.

[0104] Comparative Example 9

[0105] A deodorant comprising the following components: 30% zinc methionine, 15% C12 alkyl glucoside, 1% lauryl dimethylaminoethyl betaine, and the balance water, based on 100% by weight.

[0106] The deodorants of Examples 1-15 and Comparative Examples 1-9 were each prepared according to the preparation method.

[0107] Temperature resistance test

[0108] Blank Group 1 (blank control for Example 8): A high-temperature and low-temperature resistant high-concentration deodorant comprising the following components: 20% zinc methionine, and the balance water, based on 100% by weight.

[0109] Blank Group 2 (blank control for Example 9): A high-temperature and low-temperature resistant high-concentration deodorant comprising the following components: 30% zinc methionine, and the balance water, based on 100% by weight.

[0110] The deodorants obtained from Examples 1-15 and Comparative Examples 1-9 were each observed for shape change at different temperatures, and the results are shown in Table 1:

[0111] Table 1

[0112]

[0113] The deodorants obtained from Examples 1-15 and Comparative Examples 1-9 were each placed at 60°C for accelerated investigation, and the effective content, pH, and appearance of the deodorants were detected.

[0114] Content detection: An appropriate amount of sample (equivalent to about 0.1 g) was precisely weighed, placed in a 250 ml conical flask, 50 ml of water was added, shaken uniformly, the pH was adjusted to 5.0-6.0 with a 1 mol / L acetic acid solution, 20 ml of acetic acid-sodium acetate buffer (pH 6.0) was added, 5-10 drops of dimethyl phenol orange indicator was added, and titration was performed with 0.02 mol / L EDTA-2NA standard titrant until the solution changed from purple red to bright yellow, which was the end point, and a blank control was also performed.

[0115] pH detection: 1 g of sample was taken, water was added to 100 ml, and a pH meter was used for detection; the results are shown in Table 2:

[0116] Table 2

[0117]

[0118] Note: In Table 2, “*” indicates that the sample prepared according to the preparation method had insoluble matter at room temperature, and the corresponding physicochemical index test was not performed.

[0119] From Table 1 and Table 2, it can be seen that the deodorants obtained from Examples 1-15 and Comparative Examples 1-9 have good stability in high and low temperature conditions. From the comparison of Example 8 with Blank Group 1, Comparative Examples 1, 2 and 3, it can be seen that when the content of the active ingredient zinc amino acid is 20%, a small amount of polylysine ethylenediamine sodium phosphate is added, which can greatly improve the solubility of zinc amino acid, and the solution can withstand high and low temperatures, and the content, pH and physicochemical properties are stable.

[0120] Comparative Example 1 only contains the activator amino acid, Comparative Example 3 only contains the activator ε-polylysine ethylenediamine sodium phosphate, but Comparative Example 1 contains precipitates and is not stable at high and low temperatures, Comparative Example 2 contains both amino acid and ε-polylysine ethylenediamine sodium phosphate, and Comparative Example 3 has a certain stability, which shows that ε-polylysine ethylenediamine sodium phosphate plays an important role in the stability of the active ingredient zinc amino acid.

[0121] Comparative Example 4 and Comparative Example 5 each only contain the activator amino acid and the surfactant lauryl dimethylaminoethyl betaine, but the deodorants obtained from Comparative Example 4 and Comparative Example 5 are partially dissolved in Table 1, and precipitates appear in Table 2, and the pH value is not stable, which shows that the addition of single amino acid and surfactant cannot guarantee the high temperature stability at a concentration of 30%. The deodorants obtained from Comparative Examples 6-9 contain conventional nonionic surfactants and anionic surfactants as solubilizers, but the high temperature stability, pH value and content are not stable at high temperature and high concentration.

[0122] Deodorization test

[0123] The main test is the removal rate of ammonia, hydrogen sulfide and methyl mercaptan. The test samples are the deodorants obtained from Examples 1-15, Comparative Examples 1-9, Blank Group 1 and Blank Group 2, and pure water, wherein the ammonia, hydrogen sulfide and methyl mercaptan are completed independently in the laboratory.

[0124] Test method

[0125] I. Experimental principle

[0126] The equilibrium principle of odor molecules in gas-liquid two phases is utilized, when the concentration in one phase decreases, the concentration in the other phase will also decrease due to the movement of equilibrium.

[0127] II. Experimental part

[0128] 1. Instruments and reagents

[0129] Main instrument: composite multi-gas detector (pump suction type), K-600, range 0-500 ppm, Henan Baishan Electronic Technology Co., Ltd.; three-hole round-bottom flask; magnetic stirrer; pipette gun; other commonly used glass instruments.

[0130] Main reagent: sodium methyl mercaptide.

[0131] 2. Preparation of odor source

[0132] Methyl mercaptan: prepare 1% sodium methyl mercaptide solution with deionized water, adjust the solution pH with dilute sulfuric acid, and generate methyl mercaptan gas.

[0133] Hydrogen sulfide: prepare 1% sodium sulfide solution with deionized water, adjust the solution pH with dilute hydrochloric acid, and generate hydrogen sulfide gas.

[0134] Ammonia: prepare 5% ammonia solution with deionized water.

[0135] 3. Test steps

[0136] ① Insert the detector probe into one side of the 5L three-hole flask and seal it.

[0137] ② Add 100ml deionized water to the three-hole flask and seal it, then start stirring. After about 15in, the gas concentration reaches a stable state.

[0138] ③ When the gas concentration is stable, record the initial concentration. Add 5ml of the test sample obtained from Examples 1-15, Comparative Examples 1-9, Blank Group 1 and Blank Group 2 at 0min, 3min and 6min, respectively, and read the gas concentration every 3min. Test for 12min, record the final concentration, and use water as a blank. The concentration of the test sample is diluted from Examples 1-15 and Comparative Examples 1-9, Blank Group 1 and Blank Group 2, with an effective zinc amino acid content of 0.1%.

[0139] 4. Experimental results

[0140] Deodorization rate calculation formula: .

[0141] The test data obtained are shown in Tables 3, 4 and 5:

[0142] Table 3 Methyl mercaptan deodorization test data

[0143]

[0144] Table 4 Hydrogen sulfide deodorization test data

[0145]

[0146] Table 5 Ammonia deodorization test data

[0147]

[0148] Note: In Table 3, Table 4 and Table 5, "*" indicates that the sample has insoluble matter at room temperature, and the corresponding physicochemical index test is not performed.

[0149] As can be seen from Tables 1 / 2 / 3 / 4 / 5, the amino acid zinc deodorant of the present application has good stability at high and low temperatures and a good removal rate of methyl mercaptan, hydrogen sulfide and ammonia gas at a high dilution ratio in a short time. Polylysine ethylene diphosphonic acid sodium has a greater effect on the solubility of zinc amino acid, and compared with other activators, the addition amount of polylysine ethylene diphosphonic acid is less, and the deodorant obtained by corresponding Example 8 and Example 9 has a better deodorizing effect on odor, which can be diluted by directly adding water without adding additional adjuvants, which means that the production cost and customer use cost of the amino acid deodorant prepared by using polylysine ethylene diphosphonic acid sodium will be lower.

[0150] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that the embodiments described herein are merely possible embodiments of the application, and are not a limitation on the scope of the application. It is expressly intended that the claims are written in a way so as to include all the implied combinations of the elements disclosed or equivalent thereto.

[0151] Finally, it should be noted that: the embodiments disclosed by the embodiments of the present application are only the preferred embodiments of the present application, and are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand; it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A high content deodorant resistant to high and low temperatures, characterized by: The composition comprises the following substances by weight percentage: 10-50% of amino acid zinc, 5-40% of activating agent, 0.5-2.5% of surfactant, and the balance of water; The activating agent is one or more of amino acid, organic amine and organic sodium salt; The amino acid is one or more of lysine, glycine, histidine, alanine, arginine, isoleucine, threonine and phenylalanine; The organic amine is one or more of monoethanolamine, diethanolamine, triethanolamine, tetrahydroxypropyl ethylenediamine and tetrahydroxyethyl ethylenediamine; The organic sodium salt is one or more of polylysine ethylene diphosphonic acid sodium, ethylenediaminetetraacetic acid disodium, hydroxy ethylene diphosphonic acid tetrasodium, imino disuccinic acid tetrasodium, ethylenediaminetetramethylene phosphonic acid sodium, diethylenetriamine pentamethylene phosphonic acid sodium, methyl glycine ethanedioic acid trisodium and glutamic acid ethanedioic acid tetrasodium; The surfactant is one or both of lauryl dimethylaminoethyl betaine and fatty alcohol polyoxyethylene ether.

2. The high content deodorant of claim 1, wherein: The amino acid zinc is one or more of methionine zinc, aspartic acid zinc, glycine zinc, threonine zinc, lysine zinc and pyroglutamic acid zinc.

3. The high content deodorant of claim 1, wherein the high content deodorant is resistant to high and low temperatures. The structure of the polylysine ethylene diphosphonic acid sodium is as follows: wherein n is 25-30.

4. A process for the preparation of a high content deodorant resistant to high and low temperatures according to any of claims 1-3, characterized by the fact that: The method comprises the following steps: The activating agent and pure water are added into a reaction kettle and slowly stirred until completely dissolved; Then the surfactant and the amino acid zinc are sequentially added, completely dissolved to form a solution, and a high-temperature-resistant high-content deodorant is obtained.

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