A low-irritation, solvent-free kitchen grease cleaner

Abstract

The application discloses a low-irritation solvent-free kitchen oil stain cleaner, wherein the mass fraction of surfactants is 8.5-17%, the mass fraction of corrosion inhibitors is 1.53-7%, and the rest is water; wherein the surfactants are a combination of nonionic surfactants and amphoteric surfactants. The kitchen oil stain cleaner does not add organic solvents, but uses isomeric fatty alcohol polyoxyethylene ether as a substitute, which can quickly strip grease stains as a degreasing agent, avoids the defects of high toxicity, pungent smell and strong skin irritation of organic solvents, has strong wetting and emulsifying capacity, and is beneficial to cleaning oil stains. The use of organic base monoethanolamine instead of traditional inorganic base has strong buffering capacity, lower alkalinity and corrosion, and reduces the irritation and damage of the cleaner to the skin. The isomeric fatty alcohol polyoxyethylene ether and monoethanolamine can be compounded and synergized, and in a specific ratio, have a significant effect of reducing skin irritation.

Description

Technical Field

[0001] This invention belongs to the field of cleaning agent technology, and relates to cleaning agents, and more particularly to a low-irritation, solvent-free kitchen oil stain cleaner. Background Technology

[0002] During cooking in the kitchen, the fumes produced combine with dust and other environmental particles, adhering to and settling on surfaces such as range hoods, exhaust fans, and tiles. Over time, the unsaturated oils in the fumes undergo complex reactions such as oxidation and cross-linking under the cooking environment, forming highly adhesive grease and grime that is difficult to clean.

[0003] Oil stain remover formulas commonly used for cleaning oil stains on hard kitchen surfaces are generally divided into three categories: organic solvent formulas, strong alkali formulas, and surfactant formulas.

[0004] Organic solvents are highly efficient at removing oil stains, but these types of oil stain removers usually have a pungent odor, and organic solvents have low flash points, are highly toxic, flammable, highly polluting, and highly irritating to human skin.

[0005] Strong alkali degreasing methods are highly corrosive to metal surfaces and require a high pH level, thus they are also highly irritating to human skin.

[0006] The surfactant degreasing method utilizes the wetting, emulsifying, and penetrating effects of surfactants to emulsify oil stains into fine particles and disperse them into water. Under external force, the dirt is detached, thereby achieving the purpose of degreasing.

[0007] Currently, most kitchen grease cleaners on the market are highly alkaline and irritating, containing organic solvents. For example, Chinese patent application CN201811622022.6, entitled "A Kitchen Heavy Oil Stain Microemulsion Cleaner and Its Preparation Method," contains organic solvents such as dipropylene glycol butyl ether and triethylene glycol butyl ether, but it is irritating to the human body. Another Chinese patent application CN20202101516658, entitled "An Invention Patent for a Kitchen Grease Cleaner," discloses that sodium hydroxide is added as an alkaline additive to the kitchen grease cleaner, increasing the product's pH, but this has a corrosive effect on metal surfaces.

[0008] Therefore, there is a need for a kitchen grease cleaner formula that does not contain organic solvents or strong inorganic alkalis. Summary of the Invention

[0009] To address the issues of strong alkalinity, added organic solvents, and high skin irritation associated with traditional oil stain cleaners, this invention provides a low-irritation, solvent-free kitchen oil stain cleaner. This invention does not contain organic solvents and uses organic alkalis instead of traditional inorganic alkalis, thus reducing the irritation and damage to the skin.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] This invention provides a low-irritation, solvent-free kitchen grease cleaner, wherein the kitchen grease cleaner, by mass fraction (100%), contains 8.5%-17% surfactant, 1.53%-7% corrosion inhibitor, and the balance is water; wherein the surfactant is a combination of nonionic surfactant and amphoteric surfactant, and the nonionic surfactant includes a combination of fatty alcohol polyoxyethylene ether and isomeric fatty alcohol polyoxyethylene ether.

[0012] As a preferred embodiment of the present invention, the amphoteric surfactant is cocamidopropyl betaine.

[0013] As a preferred embodiment of the present invention, the mass percentage of each component in the surfactant is: cocamidopropyl betaine 0.5-2%, fatty alcohol polyoxyethylene ether 3-6%, and isomeric fatty alcohol polyoxyethylene ether 5-9%.

[0014] As a preferred embodiment of the present invention, the carbon chain length of the isomeric fatty alcohol polyoxyethylene ether is 10 and the EO addition number is 8.

[0015] In a preferred embodiment of the present invention, the corrosion inhibitor is a composition of monoethanolamine, sodium carbonate, sodium chloride and sodium silicate.

[0016] As a preferred embodiment of the present invention, the mass percentages of each component in the corrosion inhibitor are 1.5-4% monoethanolamine, 0.01-1% sodium carbonate, 0.01-1% sodium chloride, and 0.01-1% sodium silicate.

[0017] As a preferred embodiment of the present invention, the ratio of isomeric fatty alcohol polyoxyethylene ether to monoethanolamine is 1:1-4:1.

[0018] As a preferred embodiment of the present invention, the ratio of isomeric fatty alcohol polyoxyethylene ether to monoethanolamine is 2.1:1-2.8:1.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1) The kitchen oil stain cleaner of the present invention does not contain organic solvents, but uses isomeric fatty alcohol polyoxyethylene ether as a substitute. As a degreasing agent, it can quickly remove grease and dirt, avoiding the defects of organic solvents such as high toxicity, pungent smell and great skin irritation. In addition, isomeric fatty alcohol polyoxyethylene ether is a nonionic surfactant with strong wetting and emulsifying ability, which is beneficial for cleaning oil stains.

[0021] 2) This invention uses organic alkali monoethanolamine instead of traditional inorganic alkali, which has strong buffering capacity, lower alkalinity and corrosiveness, and reduces the irritation and damage of the cleaning agent to the skin.

[0022] 3) The isomeric fatty alcohol polyoxyethylene ether and monoethanolamine used in this invention can be combined for synergistic effects, and at a specific ratio, they have a significant effect in reducing skin irritation.

[0023] 4) According to QB / T2738-2012, the kitchen oil stain cleaner of the present invention has a strong antibacterial effect, with an antibacterial rate of 99.99% against Candida albicans and Escherichia coli, and an antibacterial rate of more than 90% against Staphylococcus aureus. Detailed Implementation

[0024] To facilitate understanding of the technical means, creative features, objectives, and effects of this invention, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the scope of protection of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0025] This invention provides a low-irritation, solvent-free kitchen grease cleaner. The kitchen grease cleaner, by mass fraction (100%), contains 8.5%-17% surfactant, 1.53%-7% corrosion inhibitor, and the balance is water. The surfactant is a combination of a nonionic surfactant and an amphoteric surfactant. The nonionic surfactant includes a combination of fatty alcohol polyoxyethylene ether and isomeric fatty alcohol polyoxyethylene ether. The amphoteric surfactant is cocamidopropyl betaine. The corrosion inhibitor is a combination of monoethanolamine, sodium carbonate, sodium chloride, and sodium silicate.

[0026] The isomeric fatty alcohol polyoxyethylene ether and monoethanolamine used can be combined for synergistic effects, and at a specific ratio, they have a significant effect in reducing skin irritation.

[0027] Example 1

[0028] This embodiment provides a kitchen grease cleaner; the components and their mass fractions are shown in Table 1.

[0029] Example 2

[0030] This embodiment provides a kitchen grease cleaner; the components and their mass fractions are shown in Table 1.

[0031] Example 3

[0032] This embodiment provides a kitchen grease cleaner; the components and their mass fractions are shown in Table 1.

[0033] The components and their mass fractions in Comparative Example 1 are shown in Table 1.

[0034] The components and their mass fractions for Comparative Example 2 are shown in Table 1.

[0035] Table 1. Components of Kitchen Grease Cleaner

[0036] Cocamidopropyl betaine, % 0.8 1.0 1.6 0.8 0.8 Fatty alcohol polyoxyethylene ether, % 5.0 4.6 4.2 6.4 1.0 Isomeric fatty alcohol polyoxyethylene ether, % 6.8 7.0 6.5 2.7 8.1 Monoethanolamine, % 2.7 2.5 3.0 2.7 2.7 Sodium carbonate, % 0.12 0.1 0.05 0.12 0.12 Sodium chloride, % 0.1 0.05 0.1 0.1 0.1 Sodium silicate, % 0.15 0.15 0.22 0.15 0.15 water ～100 ～100 ～100 ～100 ～100

[0037] Stimulation test

[0038] Test method: The kitchen oil stain cleaner provided by this invention was prepared into an aqueous solution with a total active ingredient content of 1% (mass fraction). 30 mL of this solution was mixed with 1-1.5 g of zein, and stirred with a magnetic stirrer for 2 hours at room temperature. The solution was then filtered, and the filtrate was reserved. A 1% aqueous solution with total active ingredient content without zein was used as a blank control. 5 mL of the filtrate was mixed with 0.2 g of copper sulfate, 2.5 g of potassium sulfate, and 10 mL of sulfuric acid. After a 3-hour digestion and heating process in a digestion furnace, a transparent, light blue digestive solution was obtained. Then, the digestion solution was subjected to alkalization distillation and titration using a Kjeldahl nitrogen analyzer: Sufficient sodium hydroxide solution (40% by mass) was added to the digestion solution, and distillation was carried out for 5 minutes. The generated ammonia gas was introduced into a conical flask containing 20 mL of boric acid solution (2% by mass). Ten drops of a 0.1% bromocresol green-0.2% methyl red (volume ratio 5:1) mixed solution were added as an indicator. Titration was performed using a standardized hydrochloric acid solution. The titration endpoint was reached when the solution color changed from blue to light red. The volume of hydrochloric acid consumed was recorded, and the nitrogen content of the sample was calculated according to formula (1). The nitrogen content was used to measure the irritancy of the sample; the higher the nitrogen content, the stronger the irritancy.

[0039]

[0040] In the formula:

[0041] X: Nitrogen content of the sample, g / L

[0042] V1: Volume of hydrochloric acid consumed by the sample, in mL

[0043] V0: Volume of hydrochloric acid consumed by the control sample, in mL

[0044] C: Concentration of the hydrochloric acid standard solution, mol / L

[0045] 0.014: The mass of nitrogen equivalent to one milliliter of hydrochloric acid standard solution, in grams.

[0046] V 样品 Sample volume, mL

[0047] The kitchen grease cleaners prepared in Examples 1-3, the cleaners obtained in Comparative Examples 1-2, and commercially available grease cleaners were used as test samples. The test results are shown in Table 2.

[0048] Table 2. Irritation test results of the samples and commercially available oil stain removers

[0049] Stimulus value 0.490 0.767 0.557 1.116 1.307 6.308 1.852

[0050] As can be seen from Table 2, the kitchen grease cleaners in Examples 1-3 are less irritating than commercially available grease removers. This is attributed to the absence of organic solvents and inorganic strong alkalis in the formulation. In addition, the specific compounding ratio of isomeric fatty alcohol polyoxyethylene ether and monoethanolamine makes the kitchen grease cleaner in Example 1 less irritating than the kitchen grease cleaners in Comparative Examples 1-2.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any form or substance. It should be noted that those skilled in the art can make various improvements and additions without departing from the method of the present invention, and these improvements and additions should also be considered within the scope of protection of the present invention. Any modifications, alterations, and equivalent changes made by those skilled in the art based on the above-disclosed technical content without departing from the spirit and scope of the present invention are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, and evolutions made to the above embodiments based on the essential technology of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A low-irritation, solvent-free kitchen degreaser, characterized in that, The kitchen grease cleaner, by mass fraction of 100%, contains 8.5%-17% surfactant, 1.53%-7% corrosion inhibitor, and the remainder is water; wherein the surfactant is a combination of nonionic surfactant and amphoteric surfactant, and the nonionic surfactant includes a combination of fatty alcohol polyoxyethylene ether and isomeric fatty alcohol polyoxyethylene ether. The corrosion inhibitor is a composition of monoethanolamine, sodium carbonate, sodium chloride and sodium silicate; The mass percentages of each component in the corrosion inhibitor are: monoethanolamine 1.5-4%, sodium carbonate 0.01-1%, sodium chloride 0.01-1%, and sodium silicate 0.01-1%. The ratio of isomeric fatty alcohol polyoxyethylene ether to monoethanolamine is 2.1:1-2.8:1; The amphoteric surfactant is cocamidopropyl betaine; The mass percentages of each component in the surfactant are: cocamidopropyl betaine 0.5-2%, fatty alcohol polyoxyethylene ether 3-6%, and isomeric fatty alcohol polyoxyethylene ether 5-9%.

2. The low-irritation, solvent-free kitchen degreaser according to claim 1, characterized in that, The carbon chain length of the isomeric fatty alcohol polyoxyethylene ether is 10, and the EO addition number is 8.

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