Oil-removing composition for cleaning heavy oil stains and use thereof

Abstract

Disclosed herein are oil removal compositions comprising: about 5-30 wt% of a base; about 1-20 wt% of an organic solvent comprising a first glycol ether and a second glycol ether in a weight ratio of about 1:0.1 to about 1:10, wherein the first glycol ether is a compound of formula (I) R 1 -O-(CH2CH2O) m -H, and the second glycol ether is a compound of formula (II) R 2 -O-(CH(CH3)CH2O) n -H, wherein R 1 and R 2 are each independently selected from the group consisting of C1-C 10 alkyl groups, m and n are each independently an integer from 1 to 4; and about 0.1-10 wt% of a solubilizing agent. Also disclosed are methods of cleaning a surface with the oil removal compositions, comprising contacting the oil removal compositions with a surface in need of cleaning. The oil removal compositions of the present disclosure are mild in odor, stable, and effective in removing a variety of oil stains, including polymerized oil stains and carbonized oil stains, and are particularly effective for stubborn oil stains in the food and beverage, food, and other industries.

Description

Technical Field

[0001] This disclosure relates to the field of cleaning agents (particularly degreasers), and more specifically, to highly alkaline degreasing compositions for removing stubborn oil stains (such as kitchen grease, carbonized grease, etc.), and their uses and methods. Background Technology

[0002] Cleaning is an unavoidable part of the daily operations of many industries. Take the catering industry as an example: kitchen cleaning is not only related to food safety and hygiene standards, but also affects the customer's dining experience and even the company's reputation. From the daily cleaning of stoves and floors to the removal of stains from cookware and tableware, every step is crucial. Although there are many types of cleaning agents on the market that can meet cleaning needs to some extent, their cleaning effect is often unsatisfactory when faced with heavy or stubborn grease.

[0003] In the industrial sector, stubborn grease stains that are difficult to remove can appear on the surfaces of some equipment or pipelines after prolonged use at high temperatures. These grease stains not only affect the operating efficiency of the equipment but can also lead to malfunctions and safety hazards. The catering industry faces similar problems. During frequent use, cooking utensils such as stoves, grills, and ovens easily accumulate carbonized grease stains due to fumes and food residue generated during high-temperature cooking. These carbonized grease stains are typically dense and have strong adhesion, making them difficult to penetrate and dissolve with conventional cleaning agents. Therefore, they have always been a major challenge for kitchen cleaning in the catering and food industries.

[0004] In addition, most traditional alkaline cleaners are relatively mild due to their weakly alkaline nature, making them not only safe to use but also effective at cleaning most common oil stains, thus gaining popularity in many cleaning scenarios. However, these mild cleaners are less effective when faced with stubborn oil stains.

[0005] Given the limitations of existing technologies in removing heavy oil stains, especially carbonized oil stains, there is an urgent need to develop a new type of powerful degreasing agent, particularly one with high alkalinity. Ideally, this degreasing agent should possess excellent cleaning performance, good stability, and a mild odor, enabling it to efficiently remove heavy oil stains, especially carbonized oil stains, from various surfaces in industries such as catering and food processing. Summary of the Invention

[0006] To address the problems in the prior art, this disclosure provides a highly alkaline degreasing composition and a method for cleaning oily surfaces using the degreasing composition.

[0007] This disclosure provides an oil-removing composition comprising:

[0008] About 5-30 wt% of alkali, said alkali comprising alkali metal hydroxide, alkaline earth metal hydroxide, quaternary ammonium hydroxide, or any combination thereof;

[0009] Approximately 1-20 wt% of an organic solvent, said organic solvent comprising a first glycol ether and a second glycol ether, wherein the first glycol ether is of formula (I)R 1 -O-(CH2CH2O) m The compound with -H, wherein the second diol ether is of formula (II)R 2 -O-(CH(CH3)CH2O) n Compounds with -H, where R 1 and R 2 Each is independently selected from C1-C 10 The alkyl group, m, and n are each independently an integer from 1 to 4, and the weight ratio between the first glycol ether and the second glycol ether is from about 1:0.1 to about 1:10; and

[0010] Approximately 0.1-10 wt% of solubilizer.

[0011] In some implementation schemes, R 1 and R 2 Each is independently selected from C1-C6 alkyl or C1-C4 alkyl, and m and n are each independently integers from 1 to 2.

[0012] In some embodiments, the composition contains about 3-10 wt%, about 4-7.5 wt%, or about 5-7 wt% of an organic solvent.

[0013] In some embodiments, the weight ratio of the first glycol ether to the second glycol ether is about 1:0.3 to about 1:5, about 1:0.5 to about 1:4, or about 1:1 to about 1:3.

[0014] In some implementations, in equations (I) and (II), R 1 and R 2 Each is independently selected from C1-C4 alkyl groups, with m = 2 and n = 1.

[0015] In some embodiments, the composition comprises about 8-25 wt%, about 10-20 wt%, or 10-16 wt% of a base. In some embodiments, the base comprises an alkali metal hydroxide. In some embodiments, the alkali metal hydroxide is selected from sodium hydroxide, potassium hydroxide, lithium hydroxide, and any combination thereof.

[0016] In some embodiments, the composition comprises about 0.1-8 wt%, about 0.5-6 wt%, or about 0.5-5 wt% of a solubilizer. In some embodiments, the solubilizer is selected from one or more of the following: nonionic surfactants such as alcohol ethoxylates, fatty acid ester ethoxylates, and polyoxyethylene-polyoxypropylene block copolymers; amphoteric surfactants such as betaine compounds; anionic surfactants such as sulfosuccinates and aryl sulfonates; and any combination thereof.

[0017] In some embodiments, the composition further comprises about 0.1-10 wt%, about 0.5-8 wt%, or about 1-5 wt% of a blowing agent. In some embodiments, the blowing agent is an anionic surfactant, such as a sulfonic acid (e.g., alkylbenzene sulfonic acid, dodecylbenzene sulfonic acid), a sulfonate (e.g., alkylbenzene sulfonates, such as sodium dodecylbenzene sulfonate, α-olefin sulfonates), a sulfate (e.g., sodium dodecyl sulfate, sodium lauryl ether sulfate, sodium alcohol ether sulfate), a phosphate (e.g., alkyl phosphates), a carboxylate (e.g., fatty acid salts), a sulfosuccinate (e.g., sodium dioctyl sulfosuccinate, disodium lauryl ether sulfosuccinate), or any combination thereof.

[0018] In some embodiments, the composition comprises: about 10-16 wt% of a base, wherein the base is selected from sodium hydroxide and / or potassium hydroxide; about 4-7.5 wt% of an organic solvent, wherein R 1 and R 2 Each of the components is independently selected from C1-C4 alkyl groups (optionally, m is 2 and n is 1), and the weight ratio of the first glycol ether to the second glycol ether is about 1:0.3 to 1:3; about -5 wt% of a solubilizer, wherein the solubilizer is selected from aryl sulfonates, such as sodium alkylbenzene sulfonate, linear alkylbenzene sulfonate, sodium dodecylbenzene sulfonate, sodium xylene sulfonate or sodium alkylnaphthalene sulfonate, or any combination thereof; and about 1-3 wt% of a blowing agent, wherein the blowing agent is alkylbenzene sulfonic acid or a salt thereof.

[0019] In some embodiments, the first glycol ether is selected from: ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, ethylene glycol monopentyl ether, ethylene glycol monohexyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol isopropyl ether, diethylene glycol monobutyl ether, diethylene glycol isobutyl ether, diethylene glycol sec-butyl ether, diethylene glycol tert-butyl ether, diethylene glycol monopentyl ether, diethylene glycol monohexyl ether, triethylene glycol monomethyl ether, triethylene glycol monopropyl ether, triethylene glycol monobutyl ether, triethylene glycol monopentyl ether, triethylene glycol monohexyl ether, tetraethylene glycol monomethyl ether, tetraethylene glycol monoethyl ether, tetraethylene glycol monobutyl ether, and any combination thereof.

[0020] In some embodiments, the second glycol ether is selected from: propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol isopropyl ether, propylene glycol monobutyl ether, propylene glycol isobutyl ether, propylene glycol monopentyl ether, propylene glycol monohexyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, dipropylene glycol monopropyl ether, dipropylene glycol monobutyl ether, dipropylene glycol monopentyl ether, dipropylene glycol monohexyl ether, tripropylene glycol monomethyl ether, tripropylene glycol monoethyl ether, tripropylene glycol monopropyl ether, tripropylene glycol monobutyl ether, tripropylene glycol monohexyl ether, tripropylene glycol monoheptyl ether, tetrapropylene glycol monomethyl ether, tetrapropylene glycol monoethyl ether, tetrapropylene glycol monopropyl ether, tetrapropylene glycol monobutyl ether, tetrapropylene glycol monodecyl ether, and any combination thereof.

[0021] In some embodiments, the first glycol ether comprises diethylene glycol monoethyl ether, and the second glycol ether comprises propylene glycol monomethyl ether. In some embodiments, the composition comprises about 4-7.5 wt%, about 4.5-7 wt%, or about 5-6.5 wt% of an organic solvent. In some embodiments, diethylene glycol monoethyl ether comprises at least about 2 wt% of the composition, and propylene glycol monomethyl ether comprises at least about 2 wt% of the composition.

[0022] In some embodiments, the first glycol ether comprises diethylene glycol monoethyl ether and one or more selected from the following: ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, ethylene glycol monopentyl ether, ethylene glycol monohexyl ether, diethylene glycol monomethyl ether, diethylene glycol monopropyl ether, diethylene glycol isopropyl ether, diethylene glycol monobutyl ether, diethylene glycol isobutyl ether, diethylene glycol sec-butyl ether, diethylene glycol tert-butyl ether, diethylene glycol monopentyl ether, diethylene glycol monohexyl ether, triethylene glycol monomethyl ether, triethylene glycol monopropyl ether, triethylene glycol monobutyl ether, triethylene glycol monopentyl ether, triethylene glycol monohexyl ether, tetraethylene glycol monomethyl ether, tetraethylene glycol monoethyl ether, tetraethylene glycol monobutyl ether, and any combination thereof.

[0023] In some embodiments, the second glycol ether comprises propylene glycol monomethyl ether and one or more selected from the following: propylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol isopropyl ether, propylene glycol monobutyl ether, propylene glycol isobutyl ether, propylene glycol monopentyl ether, propylene glycol monohexyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, dipropylene glycol monopropyl ether, dipropylene glycol monobutyl ether, dipropylene glycol monopentyl ether, dipropylene glycol monohexyl ether, tripropylene glycol monomethyl ether, tripropylene glycol monoethyl ether, tripropylene glycol monopropyl ether, tripropylene glycol monobutyl ether, tripropylene glycol monohexyl ether, tripropylene glycol monoheptyl ether, tetrapropylene glycol monomethyl ether, tetrapropylene glycol monoethyl ether, tetrapropylene glycol monopropyl ether, tetrapropylene glycol monobutyl ether, tetrapropylene glycol monodecyl ether, and any combination thereof.

[0024] In some embodiments, the composition further comprises one or more additives selected from chelating agents, buffers, dyes, corrosion inhibitors, thickeners, or any combination thereof. In some embodiments, the pH of the composition is approximately 12-14.

[0025] In some embodiments, the composition is used to treat conventional oil stains, polymerized oil stains, carbonized oil stains, or mixtures thereof.

[0026] A method for cleaning an oily surface is also provided, comprising: contacting the oily surface with the composition of the present disclosure and rinsing the surface. In some embodiments, the method includes spraying or applying the composition to the surface. In some embodiments, the method includes immersing the surface in the composition.

[0027] In some implementations, the oily surface is the surface of kitchen cookware or kitchen utensils, including but not limited to the inner and / or outer surfaces of pots, pans, basins, stoves, grills, ovens, bowls, kettles, etc.

[0028] In some implementations, the oily surface is a metal (e.g., stainless steel, steel, iron, copper) surface, a glass surface, a ceramic surface, a plastic surface, or any combination thereof.

[0029] Other aspects and advantages of this disclosure will be apparent to those skilled in the art upon reading the following description. Attached Figure Description

[0030] The above-mentioned objects and features, as well as other objects and features of this disclosure, will become apparent from the following description of the disclosure, taken in conjunction with the accompanying drawings, in which:

[0031] Figure 1 Photographs of the degreasing compositions (formulas 1-6) according to Example 1 are shown. From left to right, they are formulation 1, formulation 2, formulation 3, formulation 4, formulation 5, and formulation 6.

[0032] Figure 2 The stainless steel sheet containing carbonized oil stains prepared according to Example 1 is shown. Left: Stainless steel sheet without carbonized oil stains; Right: Stainless steel sheet with carbonized oil stains.

[0033] Figure 3 A diagram is shown showing a stainless steel sheet with carbonized oil stains prepared according to Example 1 being immersed in the formulation composition of Example 1.

[0034] Figure 4 The degreasing effect of the formulation composition according to Example 1 is shown.

[0035] Figure 5 The foaming properties of the formulation composition according to Example 1 are shown. Top image: Photograph taken immediately after spraying the formulation composition; Bottom image: Photograph taken 5 minutes after spraying.

[0036] Figure 6The effect of different alkali concentrations on oil removal efficiency is shown. The horizontal axis represents the NaOH concentration, and the vertical axis represents the oil removal efficiency. Detailed Implementation

[0037] The scope of this disclosure is not limited to any specific implementation described herein. The following examples are provided for illustrative purposes only.

[0038] Low-alkaline cleaners are not ideal for treating heavy oil stains (such as stubborn carbonized grease in the kitchen). High concentrations of alkali combined with organic solvents can produce excellent cleaning results. However, in a high-alkaline environment, other functional ingredients in the cleaner often experience poor solubility, affecting product stability and effectiveness. Furthermore, the use of organic solvents can be accompanied by an unpleasant odor. Therefore, this disclosure provides a high-alkaline degreasing composition for various types of oil stains (including conventional oil stains and stubborn oil stains such as carbonized and polymerized grease). This degreasing composition has a mild odor, good stability, and can be used in various scenarios, especially in the kitchen.

[0039] This disclosure provides an oil removal composition comprising about 5-30 wt% alkali, about 1-20 wt% organic solvent, and about 0.1-10 wt% solubilizer.

[0040] In some embodiments, the base comprises or is selected from alkali metal hydroxides (e.g., sodium hydroxide, potassium hydroxide, lithium hydroxide, or any combination thereof), alkaline earth metal hydroxides (magnesium hydroxide, calcium hydroxide, or any combination thereof), quaternary ammonium hydroxides (e.g., tetramethylammonium hydroxide, benzyltrimethylammonium hydroxide, or any combination thereof), and any combination thereof. In some embodiments, the base comprises or is selected from alkali metal hydroxides, such as sodium hydroxide, potassium hydroxide, lithium hydroxide, and any combination thereof. In some embodiments, the base comprises or is selected from sodium hydroxide and / or potassium hydroxide, for example, sodium hydroxide.

[0041] In some embodiments, the degreasing composition comprises about 6-28 wt% (e.g., about 8-25 wt%, 9-22 wt%, about 10-20 wt%, about 10-15 wt%, about 11-18 wt%, about 12-16 wt%, about 13-15 wt%, or any value or range therebetween) of an alkali. In some embodiments, the degreasing composition comprises about 8-25 wt%, about 8-16 wt%, about 9-15 wt%, about 10-20 wt%, or 10-16 wt% of an alkali. In some embodiments, the degreasing composition comprises about 8-16 wt%, about 9-15 wt%, about 10-15 wt%, or 10-16 wt% of an alkali, wherein the alkali is an alkali metal hydroxide, such as sodium hydroxide or potassium hydroxide.

[0042] In some embodiments, the organic solvent comprises a first glycol ether and a second glycol ether. In some embodiments, the weight ratio between the first glycol ether and the second glycol ether is from about 1:0.1 to about 1:9, for example, from about 1:0.2 to about 1:8, from about 1:0.2 to about 1:4.5, from about 1:0.3 to about 1:7.5, from about 1:0.3 to about 1:4, from about 1:0.5 to about 1:7, from about 1:0.5 to about 1:3.5, from about 1:0.6 to about 1:6.5, from about 1:0.7 to about 1:6, from about 1:0.8 to about 1:5.5, from about 1:0.8 to about 1:3, from about 1:0.9 to about 1:5, from about 1:0.9 to about 1:2.5, from about 1:1 to about 1:2, from about 1:1.2 to about 1:3, from about 1:1.25 to about 1:2.25, from about 1:1.4 to about 1:3.5, from about 1:1.5 to about 1:2.5, or any value or range therebetween. In some embodiments, the weight ratio between the first glycol ether and the second glycol ether is about 1:0.3 to about 1:5, about 1:0.5 to about 1:4, about 1:1.25 to about 1:3, or about 1:1.4 to about 1:2.5, or any value or range therebetween.

[0043] In some embodiments, the first glycol ether is of formula (I)R 1 -O-(CH2CH2O) m Compounds with -H, where R 1 Selected from C1-C 10 Alkyl group, where m is an integer from 1 to 4. In some embodiments, the second glycol ether is of formula (II)R. 2 -O-(CH(CH3)CH2O) n Compounds with -H, where R 2 Selected from C1-C 10 Alkyl group, where n is an integer from 1 to 4. In some embodiments, in formulas (I) and (II), R 1 and R 2 Each is independently selected from C1-C6 alkyl groups, such as C1-C5 alkyl, C1-C4 alkyl, C1-C3 alkyl, C1-C2 alkyl, C2-C6 alkyl, C2-C5 alkyl, C2-C4 alkyl, C2-C3 alkyl, C3-C6 alkyl, C3-C5 alkyl, C3-C4 alkyl, C4-C6 alkyl, C4-C5 alkyl, and C5-C6 alkyl. In some embodiments, in formulas (I) and (II), R 1 and R 2Each is independently selected from C1-C4 alkyl groups, such as methyl, ethyl, propyl, butyl, isopropyl, isobutyl, tert-butyl, and sec-butyl. In some embodiments, in formulas (I) and (II), m and n are each independently integers from 1 to 4, for example, 1, 2, 3, or 4. In some embodiments, m is 2 and n is 1. In some embodiments, the weight ratio between the first glycol ether and the second glycol ether is from about 1:0.3 to about 1:4, R 1 and R 2 Each is independently selected from C1-C4 alkyl groups, and m and n are each independently an integer from 1 to 2.

[0044] In some embodiments, the first glycol ether is selected from: ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, ethylene glycol monopentyl ether, ethylene glycol monohexyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol isopropyl ether, diethylene glycol monobutyl ether, diethylene glycol isobutyl ether, diethylene glycol sec-butyl ether, diethylene glycol tert-butyl ether, diethylene glycol monopentyl ether, diethylene glycol monohexyl ether, triethylene glycol monomethyl ether, triethylene glycol monopropyl ether, triethylene glycol monobutyl ether, triethylene glycol monopentyl ether, triethylene glycol monohexyl ether, tetraethylene glycol monomethyl ether, tetraethylene glycol monoethyl ether, tetraethylene glycol monobutyl ether, and any combination thereof.

[0045] In some embodiments, the first glycol ether is selected from: ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, ethylene glycol monopentyl ether, ethylene glycol monohexyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol isopropyl ether, diethylene glycol monobutyl ether, diethylene glycol isobutyl ether, diethylene glycol sec-butyl ether, diethylene glycol tert-butyl ether, diethylene glycol monopentyl ether, diethylene glycol monohexyl ether, ethylene glycol monohexyl ether, diethylene glycol monomethyl ether, triethylene glycol monopropyl ether, triethylene glycol monoethyl ether, triethylene glycol monobutyl ether, triethylene glycol monohexyl ether, and any combination thereof.

[0046] In some embodiments, the first glycol ether is selected from: ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol monobutyl ether, triethylene glycol monobutyl ether, tetraethylene glycol monobutyl ether, and any combination thereof.

[0047] In some embodiments, the first glycol ether is selected from: diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol isopropyl ether, diethylene glycol monobutyl ether, diethylene glycol isobutyl ether, diethylene glycol sec-butyl ether, diethylene glycol tert-butyl ether, and any combination thereof. In some embodiments, the second glycol ether is selected from: propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol isopropyl ether, propylene glycol monobutyl ether, propylene glycol isobutyl ether, propylene glycol monopentyl ether, propylene glycol monohexyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, dipropylene glycol monopropyl ether, dipropylene glycol monobutyl ether, dipropylene glycol monopentyl ether, dipropylene glycol monohexyl ether, tripropylene glycol monomethyl ether, tripropylene glycol monoethyl ether, tripropylene glycol monopropyl ether, tripropylene glycol monobutyl ether, tripropylene glycol monohexyl ether, tripropylene glycol monoheptyl ether, tetrapropylene glycol monomethyl ether, tetrapropylene glycol monoethyl ether, tetrapropylene glycol monopropyl ether, tetrapropylene glycol monobutyl ether, tetrapropylene glycol monodecyl ether, and any combination thereof.

[0048] In some embodiments, the second glycol ether is selected from: propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol isopropyl ether, propylene glycol monobutyl ether, propylene glycol isobutyl ether, propylene glycol monopentyl ether, propylene glycol monohexyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, dipropylene glycol monopropyl ether, dipropylene glycol monobutyl ether, dipropylene glycol monopentyl ether, dipropylene glycol monohexyl ether, tripropylene glycol monomethyl ether, tripropylene glycol monoethyl ether, tripropylene glycol monopropyl ether, tripropylene glycol monohexyl ether, tetrapropylene glycol monomethyl ether, tetrapropylene glycol monoethyl ether, tetrapropylene glycol monopropyl ether, tetrapropylene glycol monobutyl ether, and any combination thereof.

[0049] In some embodiments, the second glycol ether is selected from: propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol isopropyl ether, propylene glycol monobutyl ether, propylene glycol isobutyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, dipropylene glycol monopropyl ether, dipropylene glycol monobutyl ether, tripropylene glycol monomethyl ether, tripropylene glycol monoethyl ether, tripropylene glycol monopropyl ether, tetrapropylene glycol monomethyl ether, tetrapropylene glycol monoethyl ether, tetrapropylene glycol monopropyl ether, tetrapropylene glycol monobutyl ether, and any combination thereof.

[0050] In some embodiments, the second glycol ether is selected from: propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol isopropyl ether, propylene glycol monobutyl ether, propylene glycol isobutyl ether, and any combination thereof.

[0051] In some embodiments, the first glycol ether is selected from: diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol isopropyl ether, diethylene glycol monobutyl ether, diethylene glycol isobutyl ether, diethylene glycol sec-butyl ether, diethylene glycol tert-butyl ether, and any combination thereof, and the second glycol ether is selected from: propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol isopropyl ether, propylene glycol monobutyl ether, propylene glycol isobutyl ether, and any combination thereof. In some embodiments, the first glycol ether comprises or is composed of diethylene glycol monoethyl ether, and the second glycol ether comprises or is composed of propylene glycol monomethyl ether. In some embodiments, the organic solvent consists of or is substantially composed of the first and second glycol ethers.

[0052] In some embodiments, the composition comprises about 2-18 wt% (e.g., about 3-15 wt%, about 3.5-12 wt%, about 4-10 wt%, about 4.5-9 wt%, about 5-8.5 wt%, about 5.5-8 wt%, about 6-7.5 wt%, or any value or range therebetween) of an organic solvent. In some embodiments, the composition comprises about 3-15 wt%, about 4-10 wt%, or about 5-8 wt% of an organic solvent. In some embodiments, the composition comprises about 3.5 wt% to less than 8 wt% (e.g., about 4 wt% to less than 7.6 wt%, about 4.5 wt% to 7.5 wt%, about 5 wt% to 7 wt%, about 5 wt% to 6 wt%, about 5.2 wt% to 6.8 wt%, about 5.5 wt% to 6.5 wt%, or any value or subrange therebetween) of an organic solvent. In some embodiments, the amount of organic solvent in the composition is 2-8 wt%, for example, about 3-7.5 wt%, about 3.5-7.2 wt%, about 4-7 wt%, about 4.5-6.5 wt%, about 5-6.5 wt%, about 5.5-6.8 wt%, about 6-7.5 wt%, or any value or range therebetween.

[0053] In some embodiments, the composition comprises about 1-8 wt% (e.g., about 1-7 wt%, about 1-6 wt%, about 2-5 wt%, about 2-4.5 wt%, about 2-4 wt%, 2.5-6 wt%, about 3-5.5 wt%, about 3.5-4.5 wt%, or any value or range therebetween) of a first glycol ether. In some embodiments, the composition comprises about 2-10 wt% (e.g., about 2-7 wt%, about 2-4 wt%, about 2.5-8 wt%, about 3-7 wt%, about 3-4 wt%, about 3-5.5 wt%, 3.5-6 wt%, about 3.5-4.5 wt%, or any value or range therebetween) of a second glycol ether. In some embodiments, the composition comprises about 1-6 wt% of a first glycol ether and about 2-7 wt% of a second glycol ether, wherein the total amount of the first and second glycol ethers is about 4-7.5 wt%, about 4.5-7 wt%, about 5-6.8 wt%, and about 5.5-6.5 wt%, respectively. In some embodiments, the weight ratio between the first and second glycol ethers is about 1:0.3 to about 1:5, about 1:0.5 to about 1:3, or about 1:1 to about 1:2.

[0054] In some embodiments, the first glycol ether comprises or is composed of diethylene glycol monoethyl ether. When the first glycol ether comprises diethylene glycol monoethyl ether, it may also comprise any one or more of the first glycol ethers listed above. For example, in some embodiments, the first glycol ether comprises diethylene glycol monoethyl ether and one or more selected from the following: ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, ethylene glycol monopentyl ether, ethylene glycol monohexyl ether, diethylene glycol monomethyl ether, diethylene glycol monopropyl ether, diethylene glycol isopropyl ether, diethylene glycol monobutyl ether, diethylene glycol isobutyl ether, diethylene glycol sec-butyl ether, diethylene glycol tert-butyl ether, diethylene glycol monopentyl ether, diethylene glycol monohexyl ether, diethylene glycol monohexyl ether, triethylene glycol monomethyl ether, triethylene glycol monopropyl ether, triethylene glycol monoethyl ether, triethylene glycol monobutyl ether, triethylene glycol monohexyl ether, and any combination thereof. In some embodiments, the first glycol ether comprises about 1-6 wt% of the composition, wherein the diethylene glycol monoethyl ether comprises at least about 1 wt% of the composition (e.g., at least about 2 wt%, about 1.5-5 wt%, about 2-4 wt%, about 2-3.5 wt%, about 2-3 wt%, or any value or subrange thereof).

[0055] In some embodiments, the second glycol ether comprises or is composed of propylene glycol monomethyl ether. When the second glycol ether comprises propylene glycol monomethyl ether, it may also comprise any one or more of the second glycol ethers listed above. For example, in some embodiments, the second glycol ether comprises propylene glycol monomethyl ether and one or more selected from the following: propylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol isopropyl ether, propylene glycol monobutyl ether, propylene glycol isobutyl ether, propylene glycol monopentyl ether, propylene glycol monohexyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, dipropylene glycol monopropyl ether, dipropylene glycol monobutyl ether, dipropylene glycol monopentyl ether, dipropylene glycol monohexyl ether, tripropylene glycol monomethyl ether, tripropylene glycol monoethyl ether, tripropylene glycol monopropyl ether, tripropylene glycol monohexyl ether, tetrapropylene glycol monomethyl ether, tetrapropylene glycol monoethyl ether, tetrapropylene glycol monopropyl ether, tetrapropylene glycol monobutyl ether, and any combination thereof. In some embodiments, the second glycol ether comprises about 2-7 wt% of the composition, wherein propylene glycol monomethyl ether comprises at least about 1 wt% of the composition (e.g., at least about 2 wt%, about 1.5-5 wt%, about 2-4 wt%, about 2-3.5 wt%, about 2-3 wt%, or any value or subrange thereof).

[0056] In some embodiments, the solubilizer includes or is selected from one or more of the following: nonionic surfactants, amphoteric surfactants, anionic surfactants, and any combination thereof. In some embodiments, examples of nonionic surfactants include, but are not limited to: alcohol ethoxylates (e.g., fatty alcohol polyoxyethylene ethers, such as AEO-9), alkylphenol polyoxyethylene ethers, fatty acid ester ethoxylates, polyoxyethylene-polyoxypropylene block copolymers (e.g., ... (Series of products), or any combination thereof. In some embodiments, examples of amphoteric surfactants include, but are not limited to, betaines, such as betaine, dodecyl dimethyl betaine, cocamidopropyl betaine, or any combination thereof. In some embodiments, examples of anionic surfactants include, but are not limited to: sulfosuccinates, such as sodium monosulfonate sulfosuccinate, sodium dioctyl sulfosuccinate; aryl sulfonates, such as sodium alkylbenzene sulfonate (e.g., sodium linear alkylbenzene sulfonate, sodium dodecylbenzene sulfonate), sodium xylene sulfonate or sodium alkylnaphthalene sulfonate; α-alkenyl sulfonates; fatty alcohol sulfates; succinate sulfonates; or any combination thereof.

[0057] In some embodiments, the solubilizer is selected from anionic surfactants such as aryl sulfonates. In some embodiments, the solubilizer is selected from aryl sulfonates such as sodium alkylbenzene sulfonate (e.g., sodium linear alkylbenzene sulfonate, sodium dodecylbenzene sulfonate), sodium xylene sulfonate, or sodium alkylnaphthalene sulfonate, or any combination thereof.

[0058] In some embodiments, the composition comprises about 0.1-9 wt% (e.g., 0.1-8.5 wt%, about 0.2-8 wt%, about 0.4-7 wt%, about 0.3-6.5 wt%, about 0.5-5.5 wt%, about 0.5-5 wt%, about 0.5-3 wt%, about 0.6-4.5 wt%, about 0.7-4 wt%, about 0.8-3.5 wt%, about 0.8-3 wt%, about 0.8-2.5 wt%, about 0.8-2 wt%, about 1-3 wt%, about 1-2 wt%, or any value or range therebetween) of a solubilizer. In some embodiments, the composition comprises about 0.3-5 wt%, about 0.5-4 wt%, or about 0.8-3 wt% of a solubilizer, and said solubilizer is selected from sodium alkylbenzene sulfonate, such as sodium xylene sulfonate or sodium alkylnaphthalene sulfonate.

[0059] In some embodiments, the composition further comprises, for example, about 0.1-10 wt% of a blowing agent. In some embodiments, the blowing agent is selected from anionic surfactants. In some embodiments, the blowing agent is selected from one or more of the following: sulfonic acids (e.g., alkylbenzene sulfonic acid, dodecylbenzene sulfonic acid), sulfonates (e.g., alkylbenzene sulfonates, such as sodium dodecylbenzene sulfonate, α-olefin sulfonate), sulfates (e.g., sodium dodecyl sulfate, sodium lauryl ether sulfate, sodium alcohol ether sulfate), phosphates (e.g., alkyl phosphates), carboxylates (e.g., fatty acid salts), sulfosuccinates (e.g., sodium dioctyl sulfosuccinate, disodium lauryl ether sulfosuccinate), or any combination thereof. In some embodiments, the blowing agent is selected from sulfonic acids or salts thereof, such as alkylbenzene sulfonic acids or salts thereof, such as dodecylbenzene sulfonic acid, sodium dodecylbenzene sulfonate, α-olefin sulfonate.

[0060] In some embodiments, the composition comprises about 0.1-10 wt% (e.g., about 0.2-8 wt%, about 0.4-7 wt%, about 0.5-6 wt%, about 1-5 wt%, about 1-2.5 wt%, about 1-2 wt%, about 1.2-3 wt%, about 1.5-3.5 wt%, or any value or range therebetween) of a blowing agent. In some embodiments, the composition comprises about 0.5-5 wt%, about 1-3.5 wt%, or about 1-2 wt% of a blowing agent, and the blowing agent is selected from sulfonic acids such as alkylbenzene sulfonic acids or their salts.

[0061] In some embodiments, the composition comprises: about 8-16 wt% or about 10-16 wt% of a base, wherein the base is selected from sodium hydroxide and / or potassium hydroxide; about 4-7.5 wt% (e.g., about 4.5-7 wt%, 5-6.5 wt%, or any value or subrange therebetween) of an organic solvent, wherein R 1 and R 2Each component is independently selected from C1-C4 alkyl groups, wherein the first glycol ether comprises diethylene glycol monoethyl ether and the second glycol ether comprises propylene glycol monomethyl ether; about 0.5-5 wt% or about 0.8-3 wt% of a solubilizer selected from sodium alkylbenzene sulfonate (e.g., sodium xylene sulfonate or sodium alkylnaphthalene sulfonate); and about 1-2.5 wt% or about 1-2 wt% of a blowing agent selected from alkylbenzene sulfonic acid or its salts (e.g., dodecylbenzene sulfonic acid, sodium dodecylbenzene sulfonate, α-olefin sulfonate). In some embodiments, in formulas (I) and (II), m is 2 and n is 1. In some embodiments, the weight ratio of the first glycol ether (e.g., diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol isopropyl ether, diethylene glycol monobutyl ether, diethylene glycol isobutyl ether, diethylene glycol sec-butyl ether, diethylene glycol tert-butyl ether, or any combination thereof) to the second glycol ether (e.g., propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol isopropyl ether, propylene glycol monobutyl ether, propylene glycol isobutyl ether, or any combination thereof) is about 1:0.3 to 1:4 (e.g., 1:0.5 to 1:3, 1:1 to 1.2.5, 1:2 to 1:2, or any value or subrange thereof).

[0062] In some embodiments, the composition further comprises water. In some embodiments, the composition further comprises one or more additives selected from the group consisting of chelating agents, buffers, dyes, corrosion inhibitors, thickeners, or any combination thereof.

[0063] In some embodiments, examples of chelating agents include, but are not limited to, phosphates such as sodium tripolyphosphate and sodium pyrophosphate; citrates such as sodium citrate and trisodium citrate; aminocarboxylates such as ethylenediaminetetraacetic acid (EDTA), methylglycine diacetic acid (MGDA), glutamic acid diacetic acid (GLDA), diethylenetriaminepentaacetic acid (DTPA), N-hydroxyethylethylaminetriacetic acid (HEDTA), ethylene glycol-bis-(β-aminoethyl ether)-N,N-tetraacetic acid (EGTA), or sodium salts thereof; hydroxycarboxylates such as sodium gluconate; or any combination thereof. In some embodiments, the composition comprises about 1-10 wt% (e.g., about 1.5-8.5 wt%, about 2-6 wt%, about 2-8 wt%, about 2.5-7.5 wt%, about 3-7 wt%, about 4-5 wt%, or any range or value therebetween) of the chelating agent. In some embodiments, the composition comprises about 2.5-6.5 wt% or 3-6 wt% of a chelating agent, and said chelating agent is selected from aminocarboxylate and / or hydroxycarboxylate chelating agents.

[0064] In some embodiments, examples of buffers include, but are not limited to, carbonates such as sodium carbonate and sodium bicarbonate; phosphates such as trisodium phosphate and disodium hydrogen phosphate; borates; organic amines such as ethanolamine, diethanolamine, triethanolamine, N-methyldiethanolamine, ethylenediamine; or any combination thereof. In some embodiments, the composition comprises about 0.05-2 wt% (e.g., about 0.1-1.8 wt%, 0.15-1.4 wt%, 0.2-1.6 wt%, about 0.25-1.5 wt%, about 0.25-1.2 wt%, about 0.3-1 wt%, about 0.3-0.8 wt%, about 0.35-0.75 wt%, about 0.4-0.5 wt%, about 0.5-0.6 wt%, or any range or value therebetween) of buffer. In some embodiments, the composition comprises about 0.1-1 wt%, about 0.2-0.8 wt%, or about 0.3-0.5 wt% of a buffer, and said buffer is selected from organic amine buffers such as ethanolamine, diethanolamine, triethanolamine, N-methyldiethanolamine, ethylenediamine, or any combination thereof.

[0065] In some embodiments, examples of dyes include, but are not limited to, basic dyes such as basic magenta and basic orange; reactive dyes such as reactive red 1, reactive yellow 3RS, and reactive blue KN-R; acid dyes such as acid red G, acid blue 80, and acid yellow (e.g., acid yellow 23, acid yellow 36, and acid golden yellow G); FD&C dyes such as FD&C red 40; or any combination thereof. In some embodiments, the composition comprises about 0-0.05 wt% (e.g., about 0.0005-0.03 wt%, 0.001-0.02 wt%, 0.0015-0.01 wt%, about 0.002-0.008 wt%, about 0.0025-0.007 wt%, about 0.003-0.006 wt%, about 0.003-0.005 wt%, about 0.0035-0.0045 wt%, about 0.004-0.005 wt%, or any range or value therebetween) of a dye. In some embodiments, the composition comprises about 0-0.01 wt%, about 0.001-0.008 wt%, or about 0.001-0.005 wt% of a dye, and said dye is selected from acid dyes, such as Acid Red G, Acid Blue 80, Acid Yellow 36, Acid Golden Yellow G, or any combination thereof.

[0066] In some embodiments, examples of corrosion inhibitors include sodium silicate, benzotriazole, etc. In some embodiments, examples of thickeners include sodium carboxymethyl cellulose, sodium polyacrylate, polyvinyl alcohol, xanthan gum, etc.

[0067] In some embodiments, the composition further comprises: about 2.5-6.5 wt% or 3-6 wt% of a chelating agent, said chelating agent being selected from aminocarboxylate and / or hydroxycarboxylate chelating agents; about 0.1-1 wt%, about 0.2-0.8 wt%, or about 0.3-0.5 wt% of a buffer, said buffer being selected from organic amine buffers such as ethanolamine, diethanolamine, triethanolamine, N-methyldiethanolamine, ethylenediamine, or any combination thereof; and about 0-0.01 wt%, about 0.001-0.008 wt%, or about 0.001-0.005 wt% of a dye, said dye being selected from acid dyes such as Acid Red G, Acid Blue 80, Acid Yellow, or any combination thereof. In some embodiments that include additives, the composition further comprises the balance water.

[0068] In some embodiments, in addition to the first and second glycol ethers, the organic solvent in the composition further comprises one or more additional organic solvents selected from the group consisting of methanol, ethanol, propanol, isopropanol, butanol, isobutanol, isohexanediol, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, benzyl alcohol, phenoxyethanol, and any combination thereof. In some embodiments, the additional organic solvent is selected from isopropanol, isohexanediol, benzyl alcohol, phenoxyethanol, ethanol, or any combination thereof.

[0069] In some embodiments, the additional organic solvent comprises about 0-4 wt% of the composition, for example, about 0.1-3.5 wt%, about 0.1-2 wt%, about 0.2-3 wt%, about 0.3-2.5 wt%, about 0.5-2 wt%, about 0.7-1.9 wt%, about 0.8-1.8 wt%, about 0.9-1.6 wt%, about 1-1.5 wt%, about 1-2 wt%, or any value or range therebetween. In some embodiments, the additional organic solvent is selected from isopropanol, isohexanediol, benzyl alcohol, phenoxyethanol, ethanol, or any combination thereof, and is present in the composition in an amount of up to about 4 wt%, up to about 3 wt%, up to about 2 wt%, up to about 1.5 wt%, or up to about 1 wt%.

[0070] In some embodiments, the pH of the composition is about 12-14, such as about 12-13, about 12-13.5, about 12.2-13.8, about 12.5-13.5, about 12.5-14, about 12.8-13.2, about 13-14, or any value or range therebetween.

[0071] A method for cleaning an oily surface is also provided, comprising: contacting the oily surface with the composition of the present disclosure and rinsing the surface. In some embodiments, the method includes spraying or applying the composition to the surface. In some embodiments, the method includes immersing the surface in the composition.

[0072] The present disclosure also provides the application of the degreasing composition in cleaning oily surfaces, comprising: contacting the oily surface with the composition of the present disclosure and rinsing the surface.

[0073] In some embodiments, the oily surface is the surface of kitchen cookware, kitchen utensils, or a stovetop. In some embodiments, the oily surface is the surface of cookware (e.g., stovetops, range hoods), tableware (e.g., plates, bowls, basins), containers, cookware (e.g., grills, ovens, microwave ovens), pots and pans (e.g., frying pans, skillets, skillets), kettles (e.g., electric kettles), etc. In some embodiments, the oily surface is an inner and / or outer surface. In some embodiments, the oily surface includes, but is not limited to, the inner and / or outer surfaces of pots, pans, stovetops, grills, ovens, bowls, kettles, etc.

[0074] In some implementations of various aspects, the surface with oil stains is a metal (e.g., stainless steel, steel, iron, copper) surface, a glass surface, a ceramic surface, a plastic surface, or any combination thereof.

[0075] In some embodiments, the compositions or methods of this disclosure can be used to remove various types of oil stains, including conventional oil stains, kitchen oil stains, heavy oil stains, or stubborn oil stains, such as carbonized oil stains and polymerized oil stains. In some embodiments, the compositions or methods of this disclosure can be used to remove kitchen oil stains, including oil stains on various cookware, tableware, kitchen appliances, stovetops, and even floors and walls, especially carbonized oil stains and polymerized oil stains. In some embodiments, the compositions or methods of this disclosure can be used to remove heavy oil stains, including carbonized oil stains and / or polymerized oil stains. In some embodiments, the compositions or methods of this disclosure can be used to remove carbonized oil stains and / or polymerized oil stains.

[0076] The highly alkaline degreasing composition disclosed herein can be used to treat various types of oil stains in a variety of applications, and is particularly useful for heavy oil stains such as carbonized kitchen grease.

[0077] Although it may cause some skin irritation to the operator, or even some corrosion to the surface if handled improperly, the highly alkaline degreasing agent of this disclosure has its own unique advantages and is an effective means of cleaning various scenarios, such as kitchen cleaning. In particular, the highly alkaline cleaner / degreaser performs exceptionally well in removing stubborn grease, quickly breaking down and removing it, greatly shortening cleaning time and significantly improving cleaning efficiency, which is unmatched by other conventional cleaners. Based on its excellent degreasing performance, the highly alkaline degreasing composition of this disclosure is particularly suitable for various cleaning occasions, such as deep cleaning of the kitchen, and can be used at frequencies such as once a day, once every two days, once every three days, or even longer, such as once every five days or once a week.

[0078] In some cleaning scenarios (such as kitchen cleaning), there is a need to clean vertical surfaces (relative to the ground) or parallel surfaces opposite the ground. To meet these requirements, the degreasing composition needs to be able to adhere to these surfaces. Therefore, the compositions of this disclosure also employ foaming technology, using foam to enhance the adhesion of the composition. Consequently, the degreasing compositions of this disclosure also exhibit excellent foam stability.

[0079] Furthermore, the inventors of this application discovered that some alcohol ether organic solvents have poor solubility in highly alkaline environments, making it difficult for them to perform their intended function. Additionally, some organic solvents have unpleasant odors, thus limiting their applications. The inventors of this application found that the proportion and / or amount of organic solvents affects the odor of the composition. Therefore, through extensive experimentation, they screened out a composition formulation suitable for this disclosure, thereby solving the solubility problem of organic solvents in highly alkaline detergents and avoiding the unpleasant odors that organic solvents may cause. This endows the composition with excellent stability and performance, improves the sensory experience of the product, and enhances user comfort and acceptance.

[0080] Therefore, the highly alkaline cleaning agent / degreaser and method disclosed herein have broad application prospects in many industries such as catering, hotels, and food, and are an important choice for ensuring environmental hygiene and improving cleaning quality.

[0081] definition

[0082] The following definitions are provided to aid in understanding this disclosure, and are not intended to limit its scope.

[0083] Unless otherwise specified, “wt%” and “%” refer to weight percentage.

[0084] Unless otherwise expressly stated, the singular as used in this article includes the plural (and vice versa).

[0085] In this document, the term "optionally" means that the feature defined by the term (e.g., components, steps, etc.) may or may not be present. When this term is used in the claims and specification, when it indicates that the defined feature is "absent," it should be understood that the claim does not define the feature, rather than that the claim excludes the presence of the feature. For example, when a claim mentions "optionally, the alkali metal hydroxide is selected from sodium hydroxide, potassium hydroxide, lithium hydroxide, and any combination thereof," there are two possibilities: the first possibility indicates that the claim defines "the alkali metal hydroxide is selected from sodium hydroxide, potassium hydroxide, lithium hydroxide, and any combination thereof," and the second possibility indicates that the claim does not specifically define "the alkali metal hydroxide is selected from sodium hydroxide, potassium hydroxide, lithium hydroxide, and any combination thereof," but does not exclude the presence of the feature unless otherwise indicated by the context.

[0086] In this document, the terms "degreasing composition" and "degreasing agent" are used interchangeably unless otherwise indicated.

[0087] In this document, when the term “about” is used before a quantitative value, it also includes the specific quantitative value itself unless otherwise expressly stated. As used herein, the term “about” refers to a deviation from the nominal value of ±10%, ±7%, ±5%, ±3%, ±1%, or ±0%, unless otherwise stated or inferred.

[0088] When greases, for example, are heated above their "smoke point" (generally around 200°C), they undergo vigorous oxidation, cracking, and polymerization reactions, transforming triglycerides and other substances into large-molecule oxides and polymers, forming stubborn solid polymerized grease stains. When the temperature further rises to around 250°C, the polymerized greases begin further thermal decomposition and polymerization, dehydrating to form cyclic compounds. With increasing heating temperature or duration, they gradually form dark brown or even black solid organic carbonized grease. Therefore, in this article, "polymerized grease stains" can be understood as grease stains formed at temperatures of approximately 160-240°C. In this article, "carbonized grease stains" can be understood as grease stains formed at temperatures greater than approximately 240°C (e.g., greater than approximately 250°C).

[0089] In this article, the terms “treat” or similar expressions for oil stains are used interchangeably with “clean up / remove” for oil stains, unless otherwise indicated.

[0090] In this article, "degreasing" and "removing / removing oil stains" can be used interchangeably unless otherwise stated.

[0091] Example

[0092] The following embodiments further illustrate the technical solutions of this disclosure, but do not limit the scope of protection of this disclosure.

[0093] The embodiments of this application use the components listed in Table 1 and other components.

[0094] Table 1: Components used in the examples

[0095]

[0096] Example 1: Preparation and degreasing performance of the degreasing composition

[0097] The formulations in this embodiment were prepared according to the formulations shown in Table 2 below, and their degreasing effects were tested. Formulations 1-6 are degreasing compositions according to this disclosure; formulations 7-10 are existing degreasing agent formulations in the art. The compositions according to this disclosure are, after formulation, yellow liquids (e.g., ...). Figure 1 (As shown).

[0098] Table 2: Formulas and properties in this embodiment

[0099]

[0100]

[0101] PEG-15 cocomonium chloride

[0102] Disodium octylimino dipropionate

[0103] Sodium laurimino dipropionate

[0104] Preparation of carbonized oil sludge:

[0105] 1. Prepare a clean stainless steel sheet (50*25mm), mark it and weigh it;

[0106] 2. Apply an equal amount (0.015g) of oil (cooking oil, light yellow) to the surface of each stainless steel sheet using a brush;

[0107] 3. Preheat the oven to 260℃, place the oiled stainless steel sheet inside, and start timing once the oven temperature reaches 260℃;

[0108] 4. After 1 hour, remove the stainless steel sheet from the oven and allow it to cool at room temperature for 24 hours.

[0109] 5. Weigh the item in preparation for the degreasing test.

[0110] Prepared carbonized oil stains such as Figure 2 As shown.

[0111] Degreasing test:

[0112] 1. Add 20ml of each formulation composition to a 25ml beaker;

[0113] 2. Select stainless steel sheets containing the same weight of carbonized oil (0.012g) and immerse them separately into each beaker containing the formulation composition (e.g., ...). Figure 3 (as shown);

[0114] 3. Take photos of the stainless steel sheet before soaking, and at 5 min, 10 min, 15 min, 20 min, 30 min, and 40 min after soaking, and save the photos;

[0115] 4. After all tests are completed, scores are given based on the area of ​​surface oil stains cleaned, and the cleaning effect is calculated (expressed as a score, see Table 2).

[0116] Cleaning efficiency rating method: such as Figure 4 As shown, the numbers under "Rating Reference" in the far right column represent the theoretical minimum oil removal rate assuming complete removal of oil stains within the corresponding cleaning time (e.g., 5 min, 10 min, 15 min, 20 min, 30 min, 40 min). The actual oil removal rate for each formula = theoretical minimum oil removal rate + percentage of cleaned area in the previous time period ÷ 10. For example, formulas 1 and 2 both completely removed oil stains within 15 minutes. In the previous time period (10 min), the percentage of oil stain cleaned by formula 1 was approximately 30%, while that of formula 2 was approximately 20%. Therefore, the actual oil removal rate of formula 1 is: 80% + 30% ÷ 10 = 83%. Similarly, the actual oil removal rate of formula 2 is 82%.

[0117] The results of the oil removal test are shown in Table 2 and Figure 4 .

[0118] Foaming performance test:

[0119] 1. Pour each formulation composition into a sprayer equipped with a foam nozzle;

[0120] 2. Spray the formulation directly onto the stainless steel surface and let it stand;

[0121] 3. Take photos immediately after spraying the formulation and 5 minutes after spraying, save the photos, and score the foaming effect based on the amount of foam (0-10 points).

[0122] The foaming test results are shown in Table 2 and Figure 5 .

[0123] From Table 2 and Figure 4-5The results show that the degreasing compositions of this disclosure (formulas 1-6) have significantly better degreasing effects and foaming properties compared to the most potent existing degreasing agents (formulas 7-10). Specifically, formulations 1-6 can effectively remove carbonized oil stains within 20 minutes, or even 15 minutes. Among them, formulation 1 has the best cleaning effect on carbonized oil stains, completely removing oil stains in just 15 minutes. However, among formulations 7-10, except for formulation 7, the other formulations require 40 minutes or even longer to remove oil stains. In addition, formulations 1-6 and formulation 8 both have excellent foaming properties.

[0124] Formulas 1-6 and 7-10 have similar main components and contents, yet their effects differ significantly. This is because the specific selection and proportion of organic solvents affect the removal efficiency of carbonized oil stains.

[0125] Example 2: Effect of Alkali Concentration on Degreasing Performance

[0126] Oil stains / carbonized oil stains were prepared according to the method in Example 1, and the oil stain removal efficiency under different alkali concentrations was tested. The difference was that the oven temperature was set to 160℃, 180℃, 200℃, 220℃, and 240℃, the baking time was 1 hour, and the stainless steel sheet was immersed in the degreasing agent for 3 minutes. The formula used in this example was an aqueous solution containing only sodium hydroxide.

[0127] Table 3 shows the effect of different alkali (NaOH) concentrations on the degreasing effect of oil stains generated at a baking temperature of 180℃ (also as...). Figure 6 (As shown).

[0128] Table 3: Effect of alkali concentration on oil removal efficiency (1)

[0129] Alkali concentration Oil removal rate 0.5％ 0％ 1％ 0％ 2％ 6％ 4％ 62.50％ 8％ 97％ 12％ 99％ 16％ 100％

[0130] Table 4 shows the effect of different alkali (NaOH) concentrations on degreasing efficiency for oil stains generated at different baking temperatures.

[0131] Table 4: Effect of alkali concentration on oil removal efficiency (2)

[0132]

[0133] As shown in Table 4, the effect of alkali decreases with increasing baking temperature. When the baking temperature reaches 220-240℃, the effect of alkali decreases significantly.

[0134] Example 3: The effect of organic solvent selection on composition properties

[0135] The effects of different organic solvent choices on the composition's properties (including removal rates of polymerized and carbonized oil stains, solubility, odor, and color stability) were tested using a combination of 15% NaOH and 4% organic solvent. The formulation used in this example is an aqueous solution containing only sodium hydroxide and an organic solvent.

[0136] Polymerized oil stains / carbonized oil stains were prepared according to the method described in Example 1: polymerized oil stains were prepared by baking at 180°C for 1 hour; carbonized oil stains were prepared by baking at 260°C for 1 hour. When testing the stain removal rate, for polymerized oil stains, the stainless steel sheet was immersed in the composition for 2 minutes, and the oil stain removal rate was calculated based on the percentage of oil stain cleaned area; for carbonized oil stains, as described in Example 1… Oil removal test The procedure was performed as described in the section. The results are shown in Table 5 below.

[0137] Table 5: Effect of Organic Solvent Selection on Composition Properties

[0138]

[0139] Table 5 shows that alcohol solvents are effective at cleaning polymerized oil stains, but have limited effectiveness on carbonized oil stains. Alcohol ether solvents are effective at cleaning both polymerized and carbonized oil stains, but some solvents have problems such as poor solubility, strong odor, and poor color stability.

[0140] Example 4: Effect of Organic Solvent Combination on Composition Properties

[0141] The effects of the combination of organic solvents on the composition's properties (including degreasing rate, solubility, odor, color stability, and foam stability) were tested using a combination of 10% NaOH and 8% organic solvents (details shown in Table 6 below). The formulation used in this example is an aqueous solution containing only sodium hydroxide and organic solvents.

[0142] Carbonized oil stains were prepared according to the method described in Example 1, and the oil stain removal efficiency was tested. Carbonized oil stains were prepared by baking at 260°C for 1 hour, and, as described in Example 1… Oil removal test The oil removal rate was tested as described in the section. The results are shown in Table 6 below.

[0143]

[0144] The combination of diethylene glycol monoethyl ether and propylene glycol monomethyl ether has good degreasing performance, good solubility in strong alkaline systems, good color stability, no side effects on foam, and a mild odor.

[0145] Example 5: Effect of Organic Solvent Ratio on Composition Properties

[0146] The effects of different proportions of organic solvents on the composition's properties (including degreasing rate, solubility, odor, color stability, and foam stability) were tested. The amounts of NaOH and organic solvents in this embodiment are shown in Table 7 below. Other components and their contents are consistent with formulation 1 in Example 1, with the remainder being water.

[0147] Carbonized oil stains were prepared according to the method described in Example 1, and the oil stain removal efficiency was tested. Carbonized oil stains were prepared by baking at 260°C for 1 hour, and, as described in Example 1… Oil removal test The stain removal rate was tested as described in the section. The results are shown in Table 7 below.

[0148] Table 7: Effect of Organic Solvent Ratio on Composition Properties

[0149]

[0150] The above description of the embodiments is provided to enable those skilled in the art to understand and apply this disclosure. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, this disclosure is not limited to the specific embodiments disclosed herein, and any improvements and modifications made by those skilled in the art based on the principles of this disclosure without departing from its scope should be within the protection scope of this disclosure.

Claims

1. An oil-removing composition comprising: About 5-30 wt% of alkali, said alkali comprising alkali metal hydroxide, alkaline earth metal hydroxide, quaternary ammonium hydroxide, or any combination thereof; Approximately 1-20 wt% of an organic solvent, said organic solvent comprising a first glycol ether and a second glycol ether, wherein, The first diol ether is of formula (I)R 1 -O-(CH2CH2O) m The compound with -H, wherein the second diol ether is of formula (II)R 2 -O-(CH(CH3)CH2O) n Compounds with -H, where R 1 and R 2 Each is independently selected from C1-C 10 The alkyl group, m, and n are each independently an integer from 1 to 4, and the weight ratio between the first glycol ether and the second glycol ether is from about 1:0.1 to about 1:10; and Approximately 0.1-10 wt% of solubilizer.

2. The composition according to claim 1, wherein, R 1 and R 2 Each is independently selected from C1-C6 alkyl or C1-C4 alkyl, and m and n are each independently an integer from 1 to 2; and / or The composition contains about 3-10 wt%, about 4-7.5 wt%, or about 5-7 wt% of an organic solvent.

3. The composition according to claim 1 or 2, wherein the weight ratio of the first glycol ether to the second glycol ether is about 1:0.3 to about 1:5, about 1:0.5 to about 1:4, or about 1:1 to about 1:3; and / or, In equations (I) and (II), R 1 and R 2 Each is independently selected from C1-C4 alkyl groups, with m = 2 and n = 1.

4. The composition according to any one of claims 1-3, wherein the composition comprises about 8-25 wt%, about 10-20 wt%, or 10-16 wt% of an alkali, and / or wherein the alkali comprises an alkali metal hydroxide, optionally selected from sodium hydroxide, potassium hydroxide, lithium hydroxide, and any combination thereof.

5. The composition according to any one of claims 1-4, wherein the composition comprises about 0.1-8 wt%, about 0.5-6 wt%, or about 0.5-5 wt% of a solubilizer; and / or The solubilizer is selected from one or more of the following: nonionic surfactants such as alcohol ethoxylates, fatty acid ester ethoxylates, and polyoxyethylene-polyoxypropylene block copolymers; amphoteric surfactants such as betaine compounds; anionic surfactants such as sulfosuccinates and aryl sulfonates; and any combination thereof.

6. The composition according to any one of claims 1-5, wherein the composition further comprises about 0.1-10 wt%, about 0.5-8 wt%, or about 1-5 wt% of a foaming agent; and Optionally, the foaming agent is an anionic surfactant, such as sulfonic acid (e.g., alkylbenzene sulfonic acid, dodecylbenzene sulfonic acid), sulfonate (e.g., alkylbenzene sulfonate, such as sodium dodecylbenzene sulfonate, α-olefin sulfonate), sulfate (e.g., sodium dodecyl sulfate, sodium lauryl ether sulfate, sodium alcohol ether sulfate), phosphate (e.g., alkyl phosphate), carboxylate (e.g., fatty acid salt), sulfosuccinate (e.g., sodium dioctyl sulfosuccinate, disodium lauryl ether sulfosuccinate), or any combination thereof.

7. The composition according to any one of claims 1-6, comprising: Approximately 10-16 wt% of base, wherein the base is selected from sodium hydroxide and / or potassium hydroxide; Approximately 4-7.5 wt% organic solvent, of which, R 1 and R 2 Each is independently selected from C1-C4 alkyl groups, and the weight ratio of the first glycol ether to the second glycol ether is about 1:0.3 to 1:3; About 0.5-5 wt% of solubilizer, wherein the solubilizer is selected from aryl sulfonates, such as sodium alkylbenzene sulfonate, linear alkylbenzene sulfonate, sodium dodecylbenzene sulfonate, sodium xylene sulfonate or sodium alkylnaphthalene sulfonate, or any combination thereof; About 1-3 wt% of a blowing agent, wherein the blowing agent is alkylbenzene sulfonic acid or a salt thereof.

8. The composition according to any one of claims 1-7, wherein the first glycol ether is selected from: ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, ethylene glycol monopentyl ether, ethylene glycol monohexyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol isopropyl ether, diethylene glycol monobutyl ether, diethylene glycol isobutyl ether, diethylene glycol sec-butyl ether, diethylene glycol tert-butyl ether, diethylene glycol monopentyl ether, diethylene glycol monohexyl ether, triethylene glycol monomethyl ether, triethylene glycol monopropyl ether, triethylene glycol monobutyl ether, triethylene glycol monopentyl ether, triethylene glycol monohexyl ether, tetraethylene glycol monomethyl ether, tetraethylene glycol monoethyl ether, tetraethylene glycol monobutyl ether, and any combination thereof; and / or The second glycol ether is selected from: propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol isopropyl ether, propylene glycol monobutyl ether, propylene glycol isobutyl ether, propylene glycol monopentyl ether, propylene glycol monohexyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, dipropylene glycol monopropyl ether, dipropylene glycol monobutyl ether, dipropylene glycol monopentyl ether, dipropylene glycol monohexyl ether, tripropylene glycol monomethyl ether, tripropylene glycol monoethyl ether, tripropylene glycol monopropyl ether, tripropylene glycol monobutyl ether, tripropylene glycol monohexyl ether, tripropylene glycol monoheptyl ether, tetrapropylene glycol monomethyl ether, tetrapropylene glycol monoethyl ether, tetrapropylene glycol monopropyl ether, tetrapropylene glycol monobutyl ether, tetrapropylene glycol monodecyl ether, and any combination thereof.

9. The composition according to any one of claims 1-8, wherein the first glycol ether comprises diethylene glycol monoethyl ether, and the second glycol ether comprises propylene glycol monomethyl ether; Optionally, the composition comprises about 4-7.5 wt%, about 4.5-7 wt%, or about 5-6.5 wt% of an organic solvent; and Optionally, the diethylene glycol monoethyl ether accounts for at least about 2 wt% of the composition, and the propylene glycol monomethyl ether accounts for at least about 2 wt% of the composition.

10. The composition according to any one of claims 1-9, wherein, in addition to the first and second glycol ethers, the organic solvent further comprises one or more other organic solvents selected from the group consisting of methanol, ethanol, propanol, isopropanol, butanol, isobutanol, isohexyl glycol, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, benzyl alcohol, phenoxyethanol, and any combination thereof. Optionally, the additional organic solvent accounts for about 0-4 wt% of the composition.

11. The composition according to any one of claims 1-10, wherein the composition further comprises one or more additives selected from: chelating agents, buffers, dyes, corrosion inhibitors, thickeners, or any combination thereof; and / or The pH of the composition is approximately 12-14.

12. The composition according to any one of claims 1-11, wherein the composition is used to treat conventional oil stains, polymerized oil stains, carbonized oil stains, or mixtures thereof.

13. A method for cleaning an oily surface, comprising: Contact the oily surface with the degreasing composition according to any one of claims 1-12, and rinse the surface; Optionally, the method includes spraying or applying the composition to the surface, or immersing the surface in the composition.

14. The method of claim 13, wherein the oily surface is the surface of kitchen cookware or kitchen tableware, including but not limited to the inner and / or outer surfaces of pots, pans, bowls, stoves, grills, ovens, bowls, kettles, etc.; and / or The oily surface mentioned therein is a metal (e.g., stainless steel, steel, iron, copper) surface, a glass surface, a ceramic surface, a plastic surface, or any combination thereof.

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