Detergent composition

Abstract

To provide a detergent composition which causes no or almost no quality defects even if unintentional moisture contamination occurs when stored in a highly corrosive metal container while having excellent detergency.SOLUTION: There is provided a detergent composition which comprises the following components (A) and (B): Component (A): a fluorine-based solvent, Component (B): a rust preventive agent containing at least one compound selected from the group consisting of a fatty acid amine salt, an organic sulfonate salt, a substituted or unsubstituted benzoic acid and a benzotriazole, and the content of oxidized wax is less than 20 mass%.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a cleaning composition that does not cause rust on metal containers. [Background technology]

[0002] Conventionally, cleaning agents for industrial parts have been used to clean greases attached to the surfaces of industrial machines, transport vehicles, electrical and electronic equipment, building materials, etc. In particular, in transport vehicles such as automobiles, trains, tractors, ships, aircraft, and forklifts, greases for lubrication, cooling, etc. are attached to various parts of the drive and sliding parts, and the surfaces are contaminated when these greases are scattered by driving or when contaminants present in the surrounding environment are attached during driving. Cleaning agents containing petroleum-based hydrocarbons and alcohols have been used to remove such contamination, but since these solvents are highly flammable, non-flammable (non-hazardous) cleaning agents are required. However, since non-flammable cleaning agents have excellent cleaning properties, they are also highly corrosive, and when placed in a metal container, they corrode the inner surface of the container over time, causing rust, resulting in quality defects. In addition, when a fluorine-based solvent is used as a non-flammable cleaning agent component, moisture may enter the metal container due to condensation or repeated opening and closing of the lid. Because water has a smaller specific gravity than fluorinated solvents, water globs float on the liquid surface, and even if the inner walls of the cans were treated with primary rust prevention such as phosphate treatment, rust would still form on the inside of the metal container over time. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2022-175357 A Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention aims to provide a detergent composition which has excellent cleaning properties and which does not or hardly causes quality defects even if moisture is unintentionally mixed in during storage in a highly corrosive metal container. [Means for solving the problem]

[0005] The gist of the present invention will be described below: The embodiments of the present invention overcome the above-mentioned problems of the conventional technology. [1] A cleaning composition comprising the following components (A) and (B): Component (A): Fluorine-based solvent Component (B): A rust inhibitor comprising at least one compound selected from the group consisting of fatty acid amine salts, organic sulfonate salts, substituted or unsubstituted benzoic acids, and benzotriazoles, and having an oxidized wax content of less than 20 mass%. [2] The cleaning composition according to the above [1], wherein the blending amount of the component (B) is 0.01 to 3 parts by mass per 100 parts by mass of the component (A). [3] The cleaning composition according to the above [1] or [2], wherein the component (A) consists essentially of at least one of 1-chloro-2,3,3-trifluoro-1-propene and (Z)-1-chloro-3,3,3-trifluoropropene. [4] The cleaning composition according to any one of the above [1] to [3], which consists only of the component (A) and the component (B). [5] The cleaning composition according to any one of the above [1] to [4], which does not contain any rust inhibitor other than the component (B). [6] The cleaning composition according to any one of the above [1] to [5], which is filled in a metal container. [7] A cleaning aerosol obtained by filling a pressure-resistant container with the cleaning composition according to any one of the above [1] to [6]. [8] The cleaning aerosol according to [7] above, wherein the cleaning composition is filled into the pressure-resistant container together with a propellant. [9] A method for cleaning a contaminated part, comprising spraying the cleaning aerosol according to [7] or [8] above onto contaminants adhering to the contaminated part.

[10] The method for cleaning a contaminated part described in [9] above, wherein the contaminated part is a brake part.

[11] The method for cleaning a contaminated part described in

[10] above, wherein the brake part is an automobile part. Effect of the Invention

[0006] According to the present invention, it is possible to provide a detergent composition which has excellent detergency and which does not or hardly causes quality defects even when stored in an environment of high temperature and high humidity. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0007] The present invention will be described in detail below. In the present specification, the expression "X to Y" means that X and Y are numerical values, and X and Y are used to mean the lower limit and upper limit, respectively.

[0008] [Component (A): Fluorine-based solvent] The (A) component that can be used in the present invention is a fluorine-based solvent. The (A) component is a main component having excellent cleaning properties. The fluorine-based solvent in the present invention may contain one or more fluorine atoms, and may further contain other atoms such as other halogen atoms, hydrogen atoms, carbon atoms, oxygen atoms, and nitrogen atoms in addition to fluorine atoms. Examples of the (A) component include fluorine-containing unsaturated hydrocarbon solvents such as hydrofluoroolefins (HFOs) and hydrochlorofluoroolefins (HCFOs); fluorine-containing saturated hydrocarbon solvents such as hydrochlorofluorocarbons (HCFCs) and hydrofluorocarbons (HFCs); hydrofluoroethers (HFEs), perfluoropolyethers (PFPEs), and the like. These (A) components may be used alone or in combination of two or more. Among these (A) components, hydrochlorofluoroolefins (HCFOs) are preferred from the viewpoints of excellent cleaning properties and excellent compatibility with the (B) component described below.

[0009] Specific examples of the hydrochlorofluoroolefins include, for example, (E)-1-chloro-2,3,3-trifluoropropene ((E)-1-chloro-2,3,3-trifluoro-1-propene, HCFO-1233yd(E)), (Z)-1-chloro-2,3,3-trifluoropropene ((Z)-1-chloro-2,3,3-trifluoro-1-propene, HCFO-1233yd(Z)), (E)-1-chloro-3,3,3-trifluoropropene (HCFO-1233zd(E)), (Z)-1-chloro-3,3,3-trifluoropropene (HCFO-1233zd(Z)), ( Examples of the hydrochlorofluoroolefins include Z)-1,1,1,4,4,4-hexafluoro-2-butene (HCFO-1336mzz(Z)), 1,1-dichloro-3,3,3-trifluoropropene, 1,2-dichloro-3,3,3-trifluoropropene, 1-chloro-1,3,3-trifluoropropene, (Z)-1-chloro-2,3,3,4,4,5,5-heptafluoro-1-pentene (HCFO-1437dycc(Z)), (E)-1-chloro-2,3,3,4,4,5,5-heptafluoro-1-pentene (HCFO-1437dycc(E)), and 1,3-dichloro-3,3-difluoropropene. The hydrochlorofluoroolefins may be Z or E, or may be a mixture of Z and E.

[0010] Examples of commercially available hydrochlorofluoroolefins include, but are not limited to, AMOLEA (registered trademark) AS-300 (manufactured by AGC Corporation), CELEFIN (registered trademark, the same applies below) 1233Z (manufactured by Central Glass Co., Ltd.), and the like.

[0011] From the viewpoint of cleaning properties, the hydrochlorofluoroolefins preferably have a boiling point of 30 to 150° C. under atmospheric pressure, more preferably 30 to 100° C. The hydrochlorofluoroolefins are most preferably composed of at least one of 1-chloro-2,3,3-trifluoro-1-propene and (Z)-1-chloro-3,3,3-trifluoropropene. When 1-chloro-2,3,3-trifluoropropene is used, it is preferable that the hydrochlorofluoroolefin contains a mixture of Z and E isomers.

[0012] Component (A) has an extremely small global warming potential (GWP), which can reduce the burden on the environment. Here, global warming potential is an index that expresses the effect of each greenhouse gas on global warming relative to the effect of carbon dioxide, taking into account its duration. Specifically, global warming potential is the cumulative value of the radiant energy given to the Earth within a certain period of time (100 years) when a unit mass (for example, 1 kg) of greenhouse gas is released into the atmosphere, multiplied by the amount of CO2 emitted under the same conditions. 2 The global warming potential is preferably 10 or less, more preferably 7 or less, particularly preferably 5 or less, and most preferably 3 or less (lower limit: 0).

[0013] [Component (B): Rust inhibitor] The component (B) that can be used in the present invention is a rust inhibitor that contains at least one compound selected from the group consisting of fatty acid amine salts, organic sulfonate salts, substituted or unsubstituted benzoic acid, and benzotriazole, and has an oxidized wax content of less than 20 mass%. The component (B) is a main component that has good compatibility with the component (A), can suppress rust generation even when the detergent composition comes into contact with metal, and improves quality stability. The components (B) may be used alone or in combination.

[0014] The content of the oxidized wax in the component (B) according to the present invention is less than 20% by mass. That is, the content of the oxidized wax is less than 20% by mass relative to the total mass of the component (B) (100% by mass). If the content of the oxidized wax in the component (B) is 20% by mass or more relative to the total mass of the component (B) (100% by mass), the oxidized wax does not dissolve in the component (A) and precipitates as a solid, which may cause nozzle clogging of an aerosol or the like. In addition, the active ingredient of the rust inhibitor kneaded into the oxidized wax remains in the oxidized wax and does not disperse in the component (A), resulting in a decrease in rust prevention properties.

[0015] Here, the "oxidized wax" is obtained by oxidizing wax such as paraffin wax, microcrystalline wax, petrolatum wax obtained during the refining of petroleum fractions, and polyolefin wax obtained by synthesis.

[0016] The content of the oxidized wax in the component (B) is preferably 10% by mass or less, more preferably 5% by mass or less, even more preferably 1% by mass or less, and particularly preferably 0% by mass, based on the total mass of the component (B) (100% by mass). In other words, it is particularly preferable that the component (B) does not contain any oxidized wax at all.

[0017] Examples of fatty acids that form the fatty acid amine salt include, but are not limited to, malonic acid, succinic acid, glutaric acid, adipic acid, azelaic acid, sebacic acid, dodecanedioic acid, brassylic acid, pentadecanedicarboxylic acid, tetradecanedicarboxylic acid, hexadecanedicarboxylic acid, heptadecanedicarboxylic acid, octadecanedicarboxylic acid, caproic acid, caprylic acid, capric acid, octyl acid, pelargonic acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, oleic acid, ricinoleic acid, etc. The amine that forms the fatty acid amine salt may be any of primary amines, secondary amines, and tertiary amines.

[0018] Examples of commercially available rust inhibitors containing the fatty acid amine salt include, but are not limited to, KILLESLITE A-3, KILLESLITE A-6, KILLESLITE MS, KILLESLITE T (all manufactured by KILLEST Co., Ltd.), VERZON Origin Oil #220M (all manufactured by Daiwa Kasei Co., Ltd.), etc. These rust inhibitors containing fatty acid amine salts may be used alone or in combination.

[0019] The organic sulfonic acid forming the organic sulfonate includes, but is not limited to, petroleum sulfonic acid, alkylarylsulfonic acid such as dinonylnaphthalenesulfonic acid, etc. The cation contained in the organic sulfonate includes, but is not limited to, metal ions such as barium ion, calcium ion, zinc ion, sodium ion, lithium ion, magnesium ion, etc.

[0020] Examples of commercially available rust inhibitors containing the organic sulfonate include, but are not limited to, KILEST LITE BX-4 (all manufactured by KILEST Co., Ltd.), NA-SUL 729, NA-SUL CA / W1177, and NA-SUL CA / 1082 (all manufactured by King Industries). These rust inhibitors containing organic sulfonate may be used alone or in combination.

[0021] Examples of the substituted or unsubstituted benzoic acid include, for example, benzoic acid, p-tert-butylbenzoic acid, etc. Examples of commercially available rust inhibitors containing the substituted or unsubstituted benzoic acid include, but are not limited to, ASCONIUM (registered trademark, the same applies below)-141S1 (manufactured by ASCOTEC).

[0022] Examples of commercially available rust inhibitors containing benzotriazole include, but are not limited to, ASCONIUM-143, ASCONIUM-144DA, ASCONIUM-111, ASCONIUM-112, ASCOTRAN (registered trademark, the same applies below)-AL4, and ASCOTRAN-H14 (all manufactured by ASCOTEC).

[0023] The above component (B) may be used alone or in combination of two or more kinds.

[0024] At least one compound selected from the group consisting of the above-mentioned fatty acid amine salts, organic sulfonate salts, substituted or unsubstituted benzoic acids, and benzotriazoles is the main component of component (B), but component (B) may contain further components in addition to these compounds.

[0025] Examples of other components that may be contained in component (B) include mineral oil, desiccants, oxygen scavengers, inorganic or organic corrosion inhibitors, chelating compounds, and the like.

[0026] From the viewpoint of further improving the compatibility between the (A) component and the (B) component, it is preferable that the (B) component is substantially free of water. Note that the term "substantially free of water" includes not only the concept that the (B) component is completely free of water, but also the case where the (B) component contains 0.1% by mass or less of water relative to 100% by mass of the total mass of the (B) component.

[0027] The blending amount (content) of the (B) component in the detergent composition is preferably 0.01 to 10 parts by mass, more preferably 0.01 to 5 parts by mass, and most preferably 0.01 to 3 parts by mass, per 100 parts by mass of the (A) component. By blending the (B) component in an amount (content) of 0.01 to 10 parts by mass per 100 parts by mass of the (A) component, rust prevention properties can be exhibited without causing a decrease in cleaning properties or separation during storage.

[0028] <Optional ingredients> Any optional components can be added to the cleaning composition of the present invention as long as they do not impair the characteristics of the present invention. Examples of such components include surfactants, ultraviolet absorbers, antioxidants, chelating agents, and fragrances, and can be appropriately selected as long as they are evenly dissolved and dispersed in the (A) and (B) components. However, from the viewpoint of further exerting the effects of the present invention, it is preferable that the cleaning composition of the present invention is composed of only the (A) and (B) components. It is also preferable that the cleaning composition does not contain any rust inhibitor other than the (B) component.

[0029] <Cleaning method> The cleaning composition of the present invention can be used to clean objects to be cleaned by using methods such as wiping with a cloth rag or brush, immersion, ultrasonic cleaning, spraying with an air spray or air gun, and spraying with an aerosol, but is not limited to these.

[0030] <Filling container> Since the cleaning agent composition of the present invention has excellent rust prevention properties, a metal container can be preferably used as the filling container. The metal is not particularly limited, but may be iron, aluminum, stainless steel, or the like, and may be plated with tin or the like. The metal container may also be a pressure-resistant container. The pressure-resistant container is a sealed container designed to withstand pressure from the inside, and the metal is preferably iron, aluminum, or stainless steel. The present invention also provides a cleaning aerosol in which the cleaning agent composition of the present invention and a propellant are filled in a pressure-resistant container. The propellant may be a known substance, and may be selected from, for example, dimethyl ether (DME), carbon dioxide, liquefied petroleum gas (LPG), nitrogen, nitrous oxide, isobutane, haloalkyl, compressed air, helium, and the like, but is not limited thereto. From the viewpoints of ease of availability, safety, environmental load, and the like, the propellant is particularly preferably carbon dioxide or nitrogen, and most preferably carbon dioxide. The present invention further provides a cleaning sprayer in which the cleaning agent composition is filled in the inner bag of a double-structured container having an inner bag inside. The above-mentioned cleaning sprayer is preferably a cleaning sprayer in which a container having an inner bag within a can is filled with the cleaning composition of the present invention and, if necessary, a spray, and compressed air is introduced into the gap between the inner bag and the can, and the inner bag is pushed and sprayed by the compressed air.

[0031] <Application> Fields and applications to which the cleaning composition of the present invention can be applied include cleaning of industrial machinery, transport vehicles, electrical and electronic equipment, industrial parts, etc. Since the cleaning composition of the present invention has excellent cleaning properties against oil and grease stains, it can be suitably used for cleaning transport vehicles such as automobiles and trains. That is, the present invention provides a method for cleaning contaminants attached to contaminated parts using the cleaning composition of the present invention. Examples of contaminated parts include brake devices, particularly brake devices of transport vehicles, but the cleaning composition can also be suitably used for cleaning other machines. Examples of contaminants include grease and oil such as gear oil and brake fluid, and solid matter. In addition, the cleaning composition of the present invention can also be applied to applications other than cleaning, such as applications requiring dissolving grease and oil or solid matter such as gear oil and brake fluid, which are contaminants, such as removal of adhesives and adhesives. The cleaning composition of the present invention can be used for cleaning contaminated areas caused by grease and oil on surfaces made of metal or resin. EXAMPLES

[0032] The present invention will be described in more detail below by way of examples, but the present invention is not limited to these examples.

[0033] The following raw materials were used to prepare the cleaning compositions of Examples 1 to 17 and Comparative Examples 1 to 10: (A-1) component: 1-chloro-2,3,3-trifluoro-1-propene; mixture of Z and E isomers; boiling point at 1 atmosphere: 54°C; GWP (100 years): less than 1; product name: AMOLEA AS-300 (manufactured by AGC Corporation) Component (A-2): (Z)-1-chloro-3,3,3-trifluoropropene Boiling point at 1 atmosphere: 39°C, GWP (100 years): less than 1 Product name: CELEFIN 1233Z (manufactured by Central Glass Co., Ltd.) (B-1) Component: Rust inhibitor containing fatty acid amine salt Product name: Kiresutorite A-3 (manufactured by Kiresuto Co., Ltd.) (B-2) Component: Rust inhibitor containing fatty acid amine salt Product name: Kiresutorite A-6 (manufactured by Kiresuto Co., Ltd.) (B-3) Component: Rust inhibitor containing fatty acid amine salt Product name: Killeslite MS (manufactured by Killest Co., Ltd.) (B-4) Ingredient: Rust inhibitor containing organic sulfonate Product name: Kireslight BX-4 (manufactured by Kiresto Co., Ltd.) (B-5) Component: Rust inhibitor containing fatty acid amine salt Product name: Kiresuto Light T (manufactured by Kiresuto Co., Ltd.) (B-6) Ingredient: Rust inhibitor containing fatty acid amine salt Product name: VERZONE Origin #220M (manufactured by Daiwa Kasei Co., Ltd.) (B-7) Ingredient: Rust inhibitor containing benzoic acid and 3-aminopropyltriethoxysilane. Product name: ASCONIUM-141S1 (manufactured by ASCOTEC). (B-8) Component: Rust inhibitor containing benzotriazole and 3-aminopropyltriethoxysilane Product name: ASCONIUM-111 (manufactured by ASCOTEC) (B'-1) Ingredient: Rust inhibitor containing diisopropylamine and nitrite. Product name: VERZONE#150 (manufactured by Daiwa Kasei Co., Ltd.) (B'-2) Rust inhibitor containing sodium nitrite, sodium benzoate, and water (water content is more than 0.1 mass%) Product name: ASCOTRAN-H10 (manufactured by ASCOTEC) (B'-3) Rust inhibitor containing sodium benzoate and water (water content is more than 0.1% by mass) Product name: ASCOTRAN-HPB (manufactured by ASCOTEC) (B'-4) Rust inhibitor containing 3-aminopropyltriethoxysilane and 2-mercaptobenzothiazole Product name: ASCONIUM-142DA (manufactured by ASCOTEC) (B'-5) Rust inhibitor containing calcium salt of petroleum sulfonic acid and oxidized wax (oxide wax content: 75% by mass) Product name: Counter Rust 7009 (manufactured by Additives International LLC.) (B'-6) Antirust agent containing polyolefin amide alkene amine Product name: LUBRIZOL 890 (manufactured by Lubrizol Japan, Inc.) (B'-7) Rust inhibitor containing calcium sulfonate, mineral oil, and oxidized wax (content of oxidized wax: 20 to 30% by mass) Product name: ALOX2100 (manufactured by Lubrizol Japan, Inc.) (B'-8) Rust inhibitor containing barium sulfonate, alkylbenzene, mineral oil, and oxidized wax (content 20-30% by mass) Product name: ALOX2188 (manufactured by Lubrizol Japan, Inc.) (B'-9) Rust inhibitor containing oxidized paraffin Product name: Kiresutorite B (manufactured by Kiresuto Co., Ltd.) (B'-10) Rust inhibitor containing organic phosphate ester. Product name: Killeslite P-18C (manufactured by Killest Co., Ltd.).

[0034] The components (A) and (B) were weighed into a mixing vessel and stirred at 25°C in an air atmosphere for 30 minutes. The detailed amounts of the components (A) and (B) are as shown in Tables 1 to 3, and all values ​​are expressed in parts by mass. The blank spaces in Tables 1 to 3 indicate that the component was not used.

[0035] The cleaning compositions of Examples 1 to 17 and Comparative Examples 1 to 10 were evaluated for compatibility and rust prevention properties.

[0036] [compatibility] 50 g of each of the cleaning compositions of Examples 1 to 17 and Comparative Examples 1 to 10 was placed in a 100 mL colorless transparent vial, which was then sealed, shaken by hand 10 times, and allowed to stand for 5 minutes at 25° C. The state of the liquid was then visually confirmed. A liquid in which the droplets of component (A) and component (B) were not separated but were uniform was marked with an ◯, and a liquid in which separation of the droplets was observed was marked with an ×.

[0037] [Rust prevention] 10 mL of the cleaning composition of Examples 1 to 17 and Comparative Examples 1 to 10 was placed in a 100 mL colorless transparent vial, and an iron test piece (SPCC-SB, 1.6 x 25 x 100 mm) whose surface had been polished with sandpaper was placed in the same vial and sealed. The vial was shaken by hand so that the cleaning composition was applied to the entire test piece. 0.5 mL of purified water was dropped into the same vial, which was then sealed, and the vial was shaken by hand so that the water came into contact with the polished surface of the test piece. The vial was left to stand for 24 hours in an environment of 25°C, and the occurrence of rust was confirmed visually. Those with no rust at all were marked with ○, and those with even a little rust were marked with ×. As a comparative control, a similar test was performed using a composition containing only the (A-1) component, and rust was confirmed to occur.

[0038] The cleaning compositions of each Example and Comparative Example were evaluated for compatibility and rust prevention, and the results are shown in Tables 1 to 3 below.

[0039] [Table 1]

[0040] [Table 2]

[0041] [Table 3]

[0042] As shown in Tables 1 and 2, the cleaning compositions of Examples 1 to 17 have good compatibility and rust prevention properties. On the other hand, as shown in Table 3, the cleaning compositions of Comparative Examples 1 to 10, which used component (B) outside the scope of the present invention, were found to be poor in at least one of compatibility and rust prevention properties.

[0043] [Washability] Into a 20 mL colorless transparent vial, 10 g of the cleaning composition of Examples 1 to 17 and Comparative Examples 1 to 10 adjusted to 25°C or 40°C was weighed out, 0.05 g of each of the following oils and fats was added, the vial was sealed, and the vial was shaken by hand 30 times. After that, the vial was left to stand for 5 minutes, and the compatibility of each oil and fat in the liquid with the cleaning agent was visually confirmed, and those that were uniformly dissolved were judged to be "good". The oils and fats used in the evaluation were as follows. Engine oil: Castrol engine oil OW-20SN grade manufactured by BP Japan Co., Ltd. Mineral oil grease: ThreeBond1815D manufactured by ThreeBond Co., Ltd. · Synthetic oil: Castrol EDGEOW-40 SN / CF grade manufactured by BP Japan Co., Ltd. Gear oil: Toyota Motor Corporation Toyota Gear Oil Special GL-3 Grade 75W-90 Brake fluid: Toyota Brake Fluid 2500 manufactured by Toyota Motor Corporation Silicone oil: DOWSIL SH200 Fluid 1,000cSt manufactured by Dow Toray Industries, Inc.

[0044] It was confirmed that all of the cleaning compositions of Examples 1 to 17 had good compatibility with the above-mentioned oils and fats. On the other hand, when the cleaning compositions of Comparative Examples 1 to 10 were visually inspected in liquid, it was confirmed that all of them were non-uniform. That is, it was confirmed that all of the cleaning compositions of Comparative Examples 1 to 10 had low compatibility with the above-mentioned oils and fats.

[0045] From the above results, it is apparent that the detergent composition of the present invention has excellent cleaning properties and rust prevention properties. [Industrial Applicability]

[0046] The cleaning composition of the present invention is applicable to various cleaning applications since it does not cause rust even when filled in a metal container and can maintain excellent cleaning properties. In particular, since the cleaning composition of the present invention has excellent cleaning properties against dirt such as engine oil, it can be suitably used for cleaning automobile parts and is industrially useful.

Claims

1. A cleaning composition comprising the following components (A) and (B): Component (A): Fluorine-based solvent Component (B): A rust inhibitor comprising at least one compound selected from the group consisting of fatty acid amine salts, organic sulfonate salts, substituted or unsubstituted benzoic acids, and benzotriazoles, and having an oxidized wax content of less than 20 mass%.

2. The cleaning composition according to claim 1, wherein the blending amount of the component (B) is 0.01 to 3 parts by mass based on 100 parts by mass of the component (A).

3. 3. The cleaning composition according to claim 1, wherein the component (A) consists essentially of at least one of 1-chloro-2,3,3-trifluoro-1-propene and (Z)-1-chloro-3,3,3-trifluoropropene.

4. The cleaning composition according to claim 1 or 2, consisting essentially of the component (A) and the component (B).

5. The cleaning agent composition according to claim 1 or 2, which does not contain any rust inhibitor other than the component (B).

6. The cleaning composition according to claim 1 or 2, which is filled in a metal container.

7. A cleaning aerosol comprising the cleaning composition according to claim 1 or 2 filled in a pressure-resistant container.

8. The cleaning aerosol according to claim 7, wherein the cleaning composition is filled in the pressure-resistant container together with a propellant.

9. A method for cleaning a contaminated part, comprising spraying the cleaning aerosol according to claim 7 onto contaminants adhering to the contaminated part.

10. The method for cleaning a contaminated part according to claim 9, wherein the contaminated part is a brake part.

11. The method for cleaning a contaminated part according to claim 10, wherein the brake part is an automobile part.

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