JP2001049297A - Domestic air-conditioner fin cleaning agent and fin rinsing agent, and method for cleaning domestic air- conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain excellent cleaning and rinsing effects on domestic air- conditioner fins while retaining constant lather quality independently of the variation of environment such as the temperature difference between summertime and wintertime. SOLUTION: A domestic air-conditioner fin cleaning agent which comprises an aerosol stock solution containing 0.5-10 wt.% surface active agent 0.5-10 wt.%, alkali component, and 10-30 wt.% lower alcohol and a liquefied petroleum gas as the propellant with a mixing ratio by volume of the aerosol stock solution to the propellant of 85:15 to 60:40 is filled in an aerosol container 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technology for cleaning and rinsing fins of a home air conditioner (air conditioner).

[0002]

2. Description of the Related Art Conventionally, fins of home air conditioners have been cleaned by supplying a cleaning agent from an upstream portion of the fins with a high-pressure pump or a hand spray. In order to enhance the cleaning effect, it is necessary that the cleaning component spreads to the corners of the fin and stays for a predetermined time. In view of this, cleaning agents having an increased stock solution concentration, cleaning agents of the post-foaming type, and cleaning agents combining both have been proposed in the past. However, with these aerosol cleaners, the foam quality changes due to changes in the working environment, particularly, changes in temperature conditions, and satisfactory results have not been obtained. Specifically, the viscosity of the cleaning agent and the pressure of the propellant are affected to prevent the foam from disappearing indefinitely (common in winter). , Etc.), and a satisfactory effect cannot be obtained.

In order to enhance the cleaning effect, a strongly alkaline alkali component is required, but the fins cannot be washed away with running water or the like after the cleaning. Therefore, it depends on the natural flow of the defoamed liquid, but a satisfactory result is not always obtained. Specifically, there is a concern that the fins may be eroded by a small amount of the cleaning liquid adhering to and remaining on the fins, and there is a problem that the removed dirt adheres again and the cleaning efficiency is reduced. As a countermeasure, use of a rinsing agent can be considered.

[0004] However, if the cleaning agent or the rinsing agent does not reach the inside of the fin in a foamed state, or if the bubble disappears quickly even if it reaches the inside of the fin, it will have a sufficient cleaning effect and rinsing. No effect is exhibited. Therefore, it is necessary to repeat the work,
Large amounts of cleaning and rinsing solutions must be used. In addition, since this work is performed manually in many cases, the work is time-consuming and causes an increase in labor costs. Furthermore, if the foaming state is unstable, the sprayed mist / foamed cleaning agent or rinsing agent will be scattered to the surroundings in the form of water droplets or mist, and will be inhaled or adhered to workers, and may cause harm to the human body. Possible adverse effects.

[0005]

DISCLOSURE OF THE INVENTION The present invention relates to a cleaning agent and a rinsing agent which maintain a constant foam quality and provide excellent cleaning and rinsing effects irrespective of changes in the working environment such as temperature differences in summer and winter. The present invention provides an agent and a cleaning method.

[0006]

The fin detergent for a household air conditioner of the present invention comprises a surfactant of 0.5 to 10% by weight, an alkali component of 0.5 to 10% by weight and a lower alcohol.
An aerosol composition comprising an aerosol stock solution containing 0 to 30% by weight and a liquefied petroleum gas as a propellant was prepared by mixing the aerosol stock solution and the propellant at a mixing ratio of 85: 1 by volume.
The aerosol container is filled in the range of 5 to 60:40.

The fin rinse agent for home air conditioners of the present invention comprises a stock aerosol solution containing 0.5 to 10% by weight of a surfactant and 10 to 30% by weight of a lower alcohol, and liquefied petroleum gas as a propellant. Is filled in an aerosol container in a mixing ratio of the aerosol stock solution and the propellant in a volume ratio of 85:15 to 60:40. Further, in a fin rinse agent for a home air conditioner, it is effective to use a compressed gas such as nitrogen instead of liquefied petroleum gas as a propellant.
By using a compressed gas, a mist-like spray pattern can be obtained, more alkaline components can be removed, bubbles remaining in the cleaning agent can be washed away, and dirt that has surfaced with the force of the jets can be drained down to the drain. be able to.

Further, the cleaning method of the present invention is characterized in that the fin of a home air conditioner is cleaned using the above-mentioned cleaning agent of the present invention, and then rinsed with the above-mentioned rinsing agent. ADVANTAGE OF THE INVENTION According to the cleaning agent of this invention, the washing | cleaning agent and rinse agent of a stable foam can be supplied to a fin regardless of the change of the working environment by temperature differences, such as summer and winter. Therefore, the cleaning agent foams and stays at every corner of the fin, and the fin can be sufficiently cleaned. Similarly, the rinsing agent foams and stays at every corner of the fins, removing the alkali component of the cleaning agent to prevent corrosion of the metal surface due to alkali. Redeposition can be prevented. Further, by using the cleaning agent and the rinsing agent of the present invention, work can be performed in a short time without requiring many workers, thereby improving the safety and work efficiency of the workers.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The cleaning agent and the rinsing agent of the present invention are an aerosol composition comprising a stock solution and a propellant,
It is filled into aerosol containers, which are pressure-resistant containers, and is used for cleaning and rinsing home air conditioner fins. The stock solutions in the cleaning agent and the rinsing agent differ only in that they contain or do not need to contain an alkaline component, and are otherwise the same. That is, it has the following composition.

(1) Aerosol stock solution of fin cleaning agent for home air conditioner Surfactant Alkaline component Lower alcohol Other optional component water (2) Aerosol stock solution of fin rinse agent for home air conditioner Lower alcohol Other optional component water

As the surfactant, anionic, nonionic, cationic and amphoteric water-soluble surfactants are used. One or more of these surfactants can be used in combination, and specific examples thereof include higher alkyl sulfonates, higher alkyl ether sulfates, higher fatty acid alkanolamides, straight-chain alkylbenzene sulfonates, Anionic surfactants such as alcohol sulfates, higher fatty acid salts, α-olefin sulfonates, higher alkyl ether phosphates, etc .; polyoxyethylene alkylphenyl ethers, higher alcohol ethylene oxide adducts, higher fatty acid ethylene oxide additions And glycine-type amphoteric surfactants. In addition, any material can be used as long as it can exhibit a constant foam quality.

The surfactant is blended in an amount of 0.5 to 10% by weight, preferably 1.0 to 5% by weight, in 100% by weight of the aerosol stock solution. When the amount of the surfactant is less than 0.5% by weight, highly air-tight foam can be obtained at 10 ° C. or lower, but in the summer season exceeding 30 ° C., the air-tight foam becomes low, and the entire fin is foamed.・ Bubble disappears before filling. On the other hand, when the amount of the surfactant exceeds 10% by weight, a hard foam is generated even in the summer and does not disappear forever. An alkali component (alkali builder) is added to the fin cleaning agent alone or in combination of two or more as a component for enhancing the cleaning effect.

As a specific example of the alkaline component, caustic soda,
Sodium carbonate, sodium metasilicate, sodium sesquisilicate,
Sodium orthosilicate, sodium orthophosphate, sodium pyrophosphate, sodium tripolyphosphate, sodium tetraphosphate,
In addition to sodium hexametaphosphate, examples include caustic potash, carbonates, silicates, phosphates, and the like, and alkali builder used in general cleaning agents can also be used. Alkali component is 0.5% in 100% by weight of aerosol stock solution.
-10% by weight, preferably 0.5-5% by weight. If the amount of the alkali component is less than 0.5% by weight, sufficient detergency cannot be expected. On the other hand, when the alkali component is added in excess of 10% by weight, the cleaning effect is increased only to a certain level, and no further effect can be expected. Also,
If the alkaline component is strong, the fins may be corroded by residual components remaining after washing.

The lower alcohol is blended as a detergent or for adjusting the foam quality, and ethanol, isopropyl alcohol, or the like is used. The mixing amount of the lower alcohol is 10 to 30 in 100% by weight of the aerosol stock solution.
%, Preferably 15 to 25% by weight. When the amount of the lower alcohol is less than 10% by weight, the amount of the surfactant is within the range of the present invention, but a relatively small amount of the aerosol stock solution is sprayed at a temperature of 30 ° C. or more to form foam. Not at all. On the other hand, when the amount of the lower alcohol exceeds 30% by weight, the amount of the surfactant is within the range of the present invention, but a relatively large amount of the aerosol stock solution is sprayed at a temperature of 10 ° C. or less to form foam. Since the defoaming action is high, the undiluted solution flows down from the fin, and a sufficient cleaning effect cannot be expected.

In the aerosol stock solution of the present invention, in addition to the above essential components, chelating agents such as ethylenediaminetetraacetate and nitrilotriacetate, inhibitors, thickeners, glycol ether solvents, polyhydric alcohols, solubilizers , A pH adjuster, a rust inhibitor, a disinfectant, an anticorrosive, a deodorant, a dye, a fragrance and the like can also be blended.

The aerosol stock solution of the present invention is a water-based aerosol stock solution with the balance being 100% by weight with water. The aerosol composition of the present invention comprises an aerosol stock solution and an aerosol propellant. The mixing ratio of the aerosol stock solution and the aerosol propellant (gas amount) is 85: 1 by volume ratio.
The range is from 5 to 60:40, preferably from 80:20 to 70:30. When the gas amount exceeds 40%, foams having good foaming properties, foam airtightness, and defoaming properties can be obtained at a high temperature of 30 ° C or more, but at a low temperature of 10 ° C or less, foams with low airtightness are contained in the fins. It scatters and it is impossible to fill the fins with foam. On the other hand, if the gas volume falls below 15%,
At a high temperature of 30 ° C. or higher, the liquid was sprayed and foamed in the fin. However, the momentum is weak and it is impossible to fill the bubbles in the fins. If the temperature is lower than 10 ° C., the foaming property is remarkably reduced and no foam is formed.

LPG which is an aerosol propellant and which forms a foam by foaming an aerosol stock solution is representative of butane and propane.
A mixture in a ratio of 0:20 to 50:50 is preferable, and a mixture in a ratio of 70:30 to 60:40 is more preferable. The aerosol composition is hermetically filled in a general aerosol container equipped with a valve, and the valve is opened by driving the stem of the valve, and the aerosol composition is discharged from the stem by the pressure of the propellant. As a propellant, a compressed gas such as nitrogen or carbon dioxide is effective in forming a mist of the discharged material. In this case, the amount of the compressed gas charged is 1.0 at a temperature of 35 ° C. in the container.
MPa and the volume of the content liquid is 90% of the container volume.
% Must be set to be equal to or less than%. In addition,
In order to guarantee the total ejection of the ejected material at a low temperature (for example, 5 ° C.), the compressed gas is controlled so that the pressure in the container is in a range of more than 0.5 MPa and 1.0 MPa or less at a temperature of 35 ° C. It is desirable to set the filling amount of.

FIG. 1 is a perspective view showing a conventional aerosol container. A top button 21 (actuator) having a nozzle 23 is attached to a valve of the aerosol can 11. By pressing down the top button 21,
The stem of the valve is lowered, the valve is opened, and the cleaning or rinsing agent for the home air conditioner, which is the contents of the aerosol can 11, is ejected.

2 and 3 are perspective views of the aerosol container used in the present invention. The valve of the aerosol can 13 is provided with a gun type take-out member 31. FIG. 2 shows the transport / storage state before use, and the trigger 35 is locked by the stopper 33. At the time of use, the stopper 33 is removed to bring the state shown in FIG. This trigger 3
5 can be pulled toward the user, and the fin cleaning agent or rinsing agent of the home air conditioner, which is the contents of the aerosol can 13, can be sprayed.

FIG. 4 is a sectional view of the take-out member 31 at the time of non-ejection, and FIG. 5 is a sectional view at the time of ejection. The actuator main body 41 is attached to the stem 15 of the aerosol can 13.
The actuator body 41 is bent about
Is pushed down and the contents of the aerosol container 15 are
Injected from.

[0021]

According to the present invention, a constant foam quality is maintained irrespective of environmental changes such as temperature differences between summer and winter, and excellent cleaning and rinsing effects are obtained for fins of home air conditioners. Can be

[0022]

EXAMPLES Examples 1 to 9 (Washing Step) Fin cleaning agents were prepared according to the formulations of Examples 1 to 9 and filled in the aerosol container shown in FIG. After filling these fin surfaces with foam, the foaming property, airtightness and defoaming property of the foam after standing for 5 minutes were evaluated. Evaluation is 45 ° C (summer conditions)
And 5 ° C (winter conditions). The results are shown in Tables 1, 2 and 3. The compositions of the surfactant and the alkali component in the table are as follows. Surfactant In terms of weight ratio, higher alkyl sulfonate: higher alkyl ether sulfate: higher fatty acid alkanolamide: polyoxyethylene alkylphenyl ether = 10:
1.5: 1: 4 mixture Alkali component Equivalent mixture of silicate, carbonate and caustic soda (weight basis) Evaluation criteria are as follows.

<45 ° C.> Foamability: Good. The fin surface was filled with foam, and the state of the foam was maintained even after standing for 5 minutes. 〇 Good. The fin surface is full of foam. A little less volume than ◎. △ The momentum was weak and bubbles did not spread throughout the fins. × The fin surface was filled with foam immediately after spraying, but immediately disappeared. Airtightness: Even after standing for 5 minutes, highly airtight foam was retained.気 泡 Air bubbles were observed from the defoamed portions during the standing. Δ: The bursting foam was hollow. × The foam was defoamed. Defoaming property: 消 No defoaming due to high temperature was observed and good.も Good even though the foam at the top of the fins has disappeared slightly. △ About 50% of bubbles disappeared. × Bubbles do not disappear.

<5 ° C.> Foamability: Excellent The foam was filled on the fin surface, and the state of the foam was maintained even after standing for 5 minutes. 〇 Good. Although some defoaming was observed, the state of the foam after standing for 5 minutes was maintained. △ The momentum is weak and does not spread over the entire fin (injection is not possible). Airtightness: 泡 Even after standing for 5 minutes, highly airtight foam was retained. 〇 The propellant was strong and cavities were observed in the foam. Δ: The bursting foam was hollow. Defoaming property: 消 No defoaming for 5 minutes, good.良好 Good, no defoaming for 5 minutes. (Slightly hard foam). △ The foam is hard and it takes time to disappear. × Bubbles do not disappear.

[0025]

[Table 1] Table 1: Finn cleaner for home air conditioner and evaluation results Example 1 Composition of 2 3 4 5 stock solution (w / wt%) Surfactant 1.0 2.5 5.0 2.5 2.5 Alkaline component 1.0 2.5 5.0 2.5 2.5 Ethanol 20.0 20.0 20.0 10.0 30.0 Purified water Residue Residue Residue Residual propellant composition (w / wt%) Butane 70 70 70 70 70 Propane 30 30 30 30 30 Stock solution / gas (v / v%) 70/30 70/30 70/30 70/30 70/30 45 ℃ Foaming 〇 ◎ ◎ ◎ 〇 Airtightness ◎ ◎ ◎ ◎ 〇Defoaming ◎ ◎ ◎ 〇 〇 5 ° C Foaming ◎ ◎ ◎ ◎ ◎ Airtightness ◎ ◎ ◎ ◎ Defoaming ◎ ◎ ○ ○ ○ Evaluation ○ ○ ○ ○ ○

[0026]

[Table 2] Table 2: Composition and evaluation results of fin cleaner for home air conditioner Example 6 7 8 9 Stock solution composition (w / wt%) Surfactant 2.5 2.5 2.5 2.5 Alkaline component 2.5 2.5 2.5 2.5 Ethanol 20.0 20.0 20.0 20.0 Purified water Residue Residue Residual Propellant composition (w / wt%) Butane 80 50 70 70 Propane 20 50 30 30 Stock solution / gas (v / v%) 70/30 70/30 85/15 60/40 45 ° C Foaming 〇 〇 〇 気 Airtightness 〇 ○ ○ ○ Defoaming 〇 〇 〇 〇 5 ° C Foaming ◎ ◎ ◎ ◎ Airtightness ◎ 〇 ◎ 〇 Defoaming ◎ ◎ ◎ ◎ Evaluation ○ ○ ○ ○ Was evaluated.

[0027]

TABLE 3: Fin cleaners for household air conditioner and its evaluation results Example comparisons Example 2 2 3 4 5 6 7 stock solution composition (w / wt%) Surfactant 2.5 0.3 11.0 2.5 2.5 2.5 2.5 alkaline component 2.5 2.5 2.5 2.5 2.5 2.5 2.5 Ethanol 20.0 20.0 20.0 5.0 35.0 20.0 20.0 Purified water Residue Residue Residue Residue Residual propellant composition (w / wt%) Butane 70 70 70 70 70 70 70 Propane 30 30 30 30 30 30 30 Stock solution / gas (v / v%) 70/30 70/30 70/30 70/30 70/30 90/10 55/45 45 ℃ foamable ◎ 〇 ◎ ◎ △ △ 〇 airtightness ◎ △ ◎ ◎ × ◎ △ vanishing Foaming ◎ × × × △ △ △ 5 ° C Foaming ◎ 〇 ◎ ◎ 〇 △ ◎ Airtightness ◎ ◎ ◎ ◎ △-△ Antifoaming ◎ ◎ × × 〇-△ Evaluation 〇 × × × × × ×

Examples 10 to 18 (Rinse Step) A fin rinse was prepared according to the formulation of Examples 10 to 18 and
The undiluted solution and LPG were filled in the aerosol container shown in FIG.
The system shown in FIG. 1 was used to evaluate the foaming, foaming and defoaming properties of the foam after the fin surface was filled with foam and allowed to stand for 5 minutes. The evaluation was performed at both 45 ° C. (summer conditions) and 5 ° C. (winter conditions).
The results are shown in Tables 4, 5, and 6. The composition and evaluation criteria of the surfactant are the same as in Examples 1 to 9 (washing step).

[0029]

[Table 4] Table 4: Composition and evaluation results of fin rinse agent for household air conditioner Example 10 11 12 13 14 Stock solution composition (w / wt%) Surfactant 1.0 2.5 5.0 2.5 2.5 Ethanol 20.0 20.0 20.0 10.0 30.0 Purified water Residue Residue Residue Residue Propellant composition (w / wt%) Butane 70 70 70 70 70 Propane 30 30 30 30 30 Stock solution / gas (v / v%) 70/30 70/30 70/30 70/30 70/30 45 ℃ Foaming 〇 ◎ ◎ ◎ 〇 Airtightness ◎ ◎ ◎ ◎ 〇Defoaming ◎ ◎ ◎ 〇 〇 5 ℃ Foaming ◎ ◎ ◎ ◎ ◎ Airtightness ◎ ◎ ◎ ◎ ○ Defoaming ◎ ◎ ◎ ○ ○ ○ Evaluation 〇 〇 〇 〇 〇

[0030]

[Table 5] Table 5: Composition and evaluation results of fin rinse agent for home air conditioner Example 15 16 17 18 Stock solution composition (w / wt%) Surfactant 2.5 2.5 2.5 2.5 Ethanol 20.0 20.0 20.0 20.0 Purified water residue Residual propellant composition (w / wt%) Butane 80 50 70 70 Propane 20 50 30 30 Stock solution / gas (v / v%) 70/30 70/30 85/15 60/40 45 ° C Foaming ○ ○ ○ ○ Airtightness ○ ○ ○ ○ Defoaming ○ ○ ○ ○ 5 ℃ Foaming ◎ ◎ ◎ ◎ Airtightness ◎ ○ ◎ ○ Defoaming ○ ○ ○ ○ Evaluation 〇 〇 〇

[0031]

[Table 6] Table 6: Fin rinse agent for home air conditioner and its evaluation result Example Comparative Example 11 8 9 10 11 12 13 Stock solution composition (w / wt%) Surfactant 2.5 0.3 11.0 2.5 2.5 2.5 2.5 Alcohol 20.0 20.0 20.0 5.0 35.0 20.0 20.0 Purified water Residue Residue Residue Residue Residue Propellant composition (w / wt%) Butane 70 70 70 70 70 70 70 Propane 30 30 30 30 30 30 30 Stock solution / gas (v / v%) 70 / 30 70/30 70/30 70/30 70/30 90/10 55/45 45 ° C Foaming ◎ 〇 ◎ ◎ △ △ 〇 Airtight ◎ △ ◎ ◎ × ◎ △ Defoaming ◎ × × × △ △ △ 5 ° C Foaming ◎ 〇 ◎ ◎ 〇 △ ◎ Airtightness ◎ ◎ ◎ ◎ △-△ Defoaming ◎ ◎ × × 〇 − △ Evaluation 〇 × × × × × ×

Examples 19 to 23 (Fin rinse agent) A fin rinse agent stock solution was prepared according to the same formulation as in Example 11,
The aerosol container shown in FIG. 1 was filled with a stock solution and a compressed gas (nitrogen). These were evaluated for the relationship between the product pressure in the aerosol shown in FIG. 1 and the amount of compressed gas charged (at a constant temperature of 35 ° C.). In the evaluation, an aerosol can (full injection amount: 280 mL) was filled with 182 mL of the fin rinse agent stock solution having the same formulation as in Example 11, and further, nitrogen gas was charged by the following weight, and the internal pressure of the product at 35 ° C. was measured. Table 7 shows the evaluation results.

Evaluation use: Can inner volume 280 mL Stock solution filling amount 182 mL Stock solution filling rate 65% Temperature 35 ° C. Evaluation criteria: ◎ The product internal pressure is less than 1.0 MPa at 35 ° C., and the whole product can be sprayed even at low temperature. It is less than 1.0 MPa at 35 ° C., but it is impossible to inject the whole amount at low temperature. XX The product internal pressure is 1.0 MPa or more at 35 ° C.

[0034]

Table 7 Example implementation Example Reference Example 1 19 20 21 22 23 2 nitrogen loading (g) 0.5 0.6 0.7 0.8 0.9 1.0 1.1 Product pressure (MPa) 0.49 0.59 0.68 0.76 0.86 0.96 1.04 judgment × ◎ ◎ ◎ ◎ ◎ ××

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of an aerosol container used in the present invention.

FIG. 2 is a perspective view showing an embodiment of an aerosol container used in the present invention.

FIG. 3 is a perspective view showing an embodiment of an aerosol container used in the present invention.

FIG. 4 is a cross-sectional view showing a non-ejection state of a take-out member used in the aerosol container used in the present invention.

FIG. 5 is a cross-sectional view showing the ejection member used in the aerosol container used in the present invention at the time of ejection.

[Description of Signs] 11 Aerosol can 13 Aerosol can 15 Stem 21 Top button 23 Nozzle 31 Extraction member 33 Stopper 35 Trigger 41 Actuator main body 43 Hinge part 45 Injection port

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) C11D 3/06 C11D 3/06 3/08 3/08 3/10 3/10 3/18 3/18 3 / 20 3/20

Claims (6)

[Claims] 1. A surfactant comprising 0.5 to 10% by weight of a surfactant, 0.5 to 10% by weight of an alkali component and 10 to 10% by weight of a lower alcohol.
An aerosol composition comprising an aerosol stock solution containing 30% by weight and a liquefied petroleum gas as a propellant was mixed at a mixing ratio of aerosol stock solution and propellant of 85:15 to 15 by volume.
A fin cleaner for home air conditioners, which is filled in an aerosol container in the range of 60:40. 2. A mixture of butane and propane in a weight ratio of 80:20.
The fin cleaning agent for home air conditioners according to claim 1, wherein a liquefied petroleum gas mixed at a ratio of ~ 50: 50 is used as a propellant. 3. An aerosol composition comprising an aerosol stock solution containing 0.5 to 10% by weight of a surfactant and 10 to 30% by weight of a lower alcohol, and a liquefied petroleum gas as a propellant, and an aerosol stock solution and a propellant. A fin rinse agent for a domestic air conditioner, wherein the mixture is filled in an aerosol container at a mixing ratio of 85:15 to 60:40 by volume. 4. A mixture of butane and propane in a weight ratio of 80:20.
The fin rinse agent for home air conditioners according to claim 3, wherein a liquefied petroleum gas mixed at a ratio of ~ 50: 50 is used as a propellant. 5. An aerosol container comprising an aerosol composition comprising an aerosol stock solution containing 0.5 to 10% by weight of a surfactant and 10 to 30% by weight of a lower alcohol and a compressed gas as a propellant. A fin rinse agent for home air conditioners. 6. 0.5 to 10% by weight of a surfactant, 0.5 to 10% by weight of an alkali component and 10 to 10% by weight of a lower alcohol.
An aerosol composition containing 30% by weight of an aerosol stock solution and a liquefied petroleum gas as a propellant, wherein the mixing ratio of the aerosol stock solution and the propellant is in the range of 85:15 to 60:40 by volume. After washing the fins of the air conditioner for use, an aerosol stock solution containing 0.5 to 10% by weight of a surfactant and 10 to 30% by weight of a lower alcohol,
A method for cleaning fins of a home air conditioner, comprising rinsing the fins of a home air conditioner with an aerosol composition comprising a liquefied petroleum gas or a compressed gas as a propellant.