Cleaning aerosol products and cleaning methods

Abstract

To provide a cleaning aerosol product which can easily spray a wide range of a foamy cleaning agent to a surface to be cleaned and have excellent visibility of the cleaning agent adhered to the surface to be cleaned, and a cleaning method.SOLUTION: There is provided a cleaning aerosol product which has a mechanical break-up button having an injection area of 1.7 mm2 or more and an injection length of 3 mm or more and comprises a surfactant represented by the following formula (1), a solvent having a LogKow of -0.5 to 4.0 and a liquefied petroleum gas as a propellant and has an internal pressure of 0.3 MPa or more at 20°C. R1-(EO)m-(PO)n-H (1) (wherein, R1 represents a linear or branched alkyl group having 8 or more and less than 16 carbon atoms, EO represents an ethylene oxide group, PO represents an ethylene oxide group, m is 1 to 15, and n is 0 to 5.)SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] This invention relates to a cleaning aerosol product and a cleaning method. [Background technology]

[0002] In recent years, with the diversification of lifestyles, there has been a growing demand for ways to shorten the time and effort spent on household chores. Bathroom cleaning, in particular, is said to be a significant burden, and there is a high demand for ways to reduce the time and effort involved.

[0003] Bathtubs, bathroom floors, and walls are often soiled with organic matter such as fatty acid metal salts, free fatty acids, glycerides, and nitrogen compounds, as well as inorganic matter such as mud. Therefore, liquid cleaning agents are often used to clean bathrooms. Typically, cleaning is done by impregnating a sponge with such a liquid cleaning agent and scrubbing the surface, or by spraying the liquid cleaning agent onto the surface and then scrubbing with a sponge. However, scrubbing surfaces places a heavy burden on the person doing the cleaning.

[0004] Therefore, in order to reduce the workload, a so-called "no-scrub" type of cleaning agent has been proposed that allows for bathroom cleaning without scrubbing with a sponge or the like by spraying the cleaning agent onto the bathroom floor, walls, etc., using a pump-spray type product. As an example of such technology, a cleaning method has been described in which a liquid cleaning agent sprayed from a trigger-type spray container is used to clean surfaces such as the inner walls of a bathtub, and the cleaning agent is sprayed while moving the trigger-type spray container horizontally, thereby enabling spraying over an area of ​​50 cm or more with a single spray (see, for example, Patent Document 1 below). [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2017-225970 [Overview of the project] PROBLEMS TO BE SOLVED BY THE INVENTION

[0006] However, for pump spray type products, to spray the entire surface to be cleaned, a person performing cleaning (hereinafter, a person performing cleaning using a tool is referred to as "user") needs to perform many spraying operations, which causes a problem of heavy burden on the user such as hand fatigue.

[0007] In addition, to reduce the number of spraying operations, aerosol type cleaning agents have also been studied. However, for aerosol type cleaning agents, when the area requiring cleaning is large, the button pressing time becomes long, and there is still room for improvement from the perspective of reducing the burden on users.

[0008] Furthermore, many of these cleaning agents have poor visibility of the cleaning agent adhering to the surface to be cleaned after spraying, making it difficult to distinguish the locations where the cleaning agent has been applied, leading to repeated treatment or formation of areas where the cleaning agent is not adhering, which makes it difficult to efficiently and evenly clean the entire surface to be cleaned.

[0009] To solve the above problems, the present invention aims to provide a cleaning aerosol product and a cleaning method that can easily spray a foamy cleaning agent over a wide range onto a surface to be cleaned, and have excellent visibility of the cleaning agent adhering to the surface to be cleaned. MEANS FOR SOLVING THE PROBLEMS

[0010] As a result of intensive research, the inventors of the present application have found that the above problems can be solved by the cleaning method of the present invention described below. <1> The nozzle orifice area is 1.7mm 2 or more, and is equipped with a mechanical breakup button having a nozzle orifice length of 3mm or more, a surfactant represented by the following formula (1), a solvent with a cLogKow of -0.5 to 4.0, and liquefied petroleum gas as a propellant, A cleaning aerosol product having an internal pressure of 0.3MPa or more at 20°C. R1 -(EO) m -(PO) n -H ···(1) (In the formula, R 1 represents a linear or branched alkyl group having 8 or more and less than 16 carbon atoms, EO represents an ethylene oxide group, PO represents a propylene oxide group, m is 1 to 15, and n is 0 to 5.) <2> Equipped with a mechanical breakup button having an orifice diameter of 1.5 mm or more and an orifice length of 3 mm or more, a surfactant represented by the following formula (1), a solvent having a cLogKow of -0.5 to 4.0, and liquefied petroleum gas as a propellant, A cleaning aerosol product having an internal pressure of 0.3 MPa or more at 20°C. R 1 -(EO) m -(PO) n -H ···(1) (In the formula, R 1 represents a linear or branched alkyl group having 8 or more and less than 16 carbon atoms, EO represents an ethylene oxide group, PO represents a propylene oxide group, m is 1 to 15, and n is 0 to 5.) <3> A mechanical breakup button having an orifice area of 1.7 mm 2 or more and an orifice length of 3 mm or more is provided, a surfactant represented by the following formula (1), a solvent having a cLogKow of -0.5 to 4.0, and liquefied petroleum gas as a propellant, A cleaning method for attaching foam to a surface to be cleaned using a cleaning aerosol product having an internal pressure of 0.3 MPa or more at 20°C. R 1 -(EO) m -(PO) n -H ···(1) (In the formula, R 1(where represents a linear or branched alkyl group with 8 to less than 16 carbon atoms, EO represents an ethylene oxide group, PO represents a propylene oxide group, m is 1 to 15, and n is 0 to 5.) <4> Equipped with a mechanical break-up button with a nozzle diameter of 1.5 mm or more and a nozzle length of 3 mm or more, A surfactant represented by the following formula (1), Solvents with cLogKow values ​​of -0.5 to 4.0, It contains liquefied petroleum gas as a propellant, A cleaning method that involves applying foam to a surface to be cleaned using a cleaning aerosol product with an internal pressure of 0.3 MPa or higher at 20°C. R 1 -(EO) m -(PO) n -H ···(1) (In the formula, R 1 (where represents a linear or branched alkyl group with 8 to less than 16 carbon atoms, EO represents an ethylene oxide group, PO represents a propylene oxide group, m is 1 to 15, and n is 0 to 5.) [Effects of the Invention]

[0011] According to the present invention, it is possible to provide a cleaning aerosol product and cleaning method that allows a foamy cleaning agent to be easily and widely sprayed onto the surface to be cleaned, and that offers excellent visibility of the cleaning agent adhering to the surface to be cleaned. [Brief explanation of the drawing]

[0012] [Figure 1] This is a schematic diagram showing the configuration of the cleaning aerosol product of this embodiment. [Figure 2] This figure shows an example of a spraying member of a mechanical breakup button used in the cleaning aerosol product of this embodiment, where (A) is a cross-sectional view and (B) is a view of the helical mechanism from the back side in the spraying direction. [Figure 3] This is a perspective view showing an example of the cross-sectional structure of an injection member. [Modes for carrying out the invention]

[0013] Embodiments of the present invention will be described below with reference to the drawings. The following embodiments are illustrative examples for explaining the present invention and are not intended to limit the present invention to these embodiments only.

[0014] 《Cleaning Aerosol Products》 One embodiment of the cleaning aerosol product of this embodiment has a nozzle area of ​​1.7 mm². 2 Furthermore, it is equipped with a mechanical break-up button with a nozzle length of 3 mm or more, contains a surfactant represented by the following formula (1), a solvent with a cLogKow of -0.5 to 4.0, and liquefied petroleum gas as a propellant, and has an internal pressure of 0.3 MPa or more at 20°C. R 1 -(EO) m -(PO) n -H ···(1) (In the formula, R 1 (where represents a linear or branched alkyl group with 8 to less than 16 carbon atoms, EO represents an ethylene oxide group, PO represents a propylene oxide group, m is 1 to 15, and n is 0 to 5.) Furthermore, another embodiment of the cleaning aerosol product of this embodiment is equipped with a mechanical break-up button with a nozzle diameter of 1.5 mm or more and a nozzle length of 3 mm or more, and contains a surfactant represented by the following formula (1), a solvent with a cLogKow of -0.5 to 4.0, and liquefied petroleum gas as a propellant, and has an internal pressure of 0.3 MPa or more at 20°C. R 1 -(EO) m -(PO) n -H ···(1) (In the formula, R 1 (where represents a linear or branched alkyl group with 8 to less than 16 carbon atoms, EO represents an ethylene oxide group, PO represents a propylene oxide group, m is 1 to 15, and n is 0 to 5.) These embodiments may be collectively referred to as "the cleaning aerosol product of this embodiment."

[0015] The cleaning aerosol product of this embodiment can be configured to include a mechanical break-up button equipped with a spray nozzle, and a container containing an aerosol composition comprising a cleaning agent containing a surfactant, a solvent, and a propellant such as liquefied petroleum gas (hereinafter sometimes referred to as "LPG").

[0016] According to the cleaning aerosol product of this embodiment, (1) the nozzle area is 1.7 mm 2 The above, and (2) the nozzle diameter is 1.5 mm or more, satisfy at least one of these conditions, and is equipped with a mechanical break-up button with a nozzle length of 3 mm or more, contains a surfactant represented by formula (1), a solvent with a cLogKow of -0.5 to 4.0, and liquefied petroleum gas as a propellant, and has an internal pressure of 0.3 MPa or more at 20°C, enabling continuous spraying of the cleaning agent by aerosol and allowing for wide-angle spraying of foamy cleaning agent. As a result, for surfaces to be cleaned such as the walls of unit baths and bathtub walls, the area of ​​foamy cleaning agent adhering to the surface to be cleaned with each spray is large. Furthermore, the cleaning aerosol product of this embodiment can form good foam and continuously adhere foamy cleaning agent to the surface to be cleaned, resulting in excellent visibility of the cleaning agent after spraying. Thus, with the cleaning aerosol product of this embodiment, the foamy cleaning agent can be easily and widely sprayed onto the surface to be cleaned, and the visibility of the cleaning agent adhering to the surface is excellent. As a result, the number of sprays and spraying time of the cleaning agent can be reduced, and the entire surface to be cleaned can be cleaned evenly and efficiently, thereby shortening cleaning time and saving labor. Furthermore, the cleaning aerosol product of this embodiment allows the foam to adhere to the surface to be cleaned for a good duration, enabling the cleaning effect of the cleaning agent to be fully realized. In addition, it offers superior cleaning efficiency, resulting in reduced cleaning time and labor savings.

[0017] <Composition of cleaning aerosol products> The configuration of the cleaning aerosol product of this embodiment will be explained using Figure 1. Figure 1 is a schematic diagram showing the configuration of the cleaning aerosol product of this embodiment.

[0018] As shown in Figure 1, the cleaning aerosol product 10 comprises a mechanical breakup button 20 and a container 40 that contains an aerosol composition 60. Furthermore, the end of the mechanical breakup button 20 on the cleaning liquid spraying side is equipped with a spray member 30 having a mechanical breakup mechanism. The cleaning aerosol product 10 is configured to spray the cleaning agent in the aerosol composition 60 in a foamy form using the pressure of vaporized propellant (LPG). The aerosol composition 60 contained in the container 40 will be described later.

[0019] The container 40 is, for example, a metal can formed in a cylindrical shape. The container 40 contains a liquid aerosol composition 60 containing a cleaning agent and LPG as a propellant. Since the aerosol composition 60 is contained under pressure, when the mechanical break-up button 20 is operated, the aerosol composition 60 is released all at once from the spraying member 30, and the aerosol composition is sprayed as foam due to the rapid expansion of the propellant caused by the depressurization. In addition, although not particularly limited, as shown in Figure 1, the bottom surface of the container 40 is hemispherical and convex upwards on the paper plane, and the tube end of the valve 50, which will be described later, is located on the side wall side (lateral side) of the bottom surface of the container 4, so that the aerosol composition 60 can be sprayed to the very end. The container can and the valve 50, which will be described later, may be coated with epoxyphenol resin coating, epoxy urea resin coating, polyamide-imide resin coating, PET lamination, PBT lamination, PP lamination, etc.

[0020] The mechanical break-up button 20 of the cleaning aerosol product 10 has a button mechanism with an internal passage (internal passage C described later) and a valve 50 including a stem that closes the internal passage C and the inside of the container 40 when the mechanical break-up button 20 is not operated and is not in use, and opens the internal passage C and the inside of the container 40 to communicate with each other when the mechanical break-up button 20 is operated and is in use, and an internal passage C is provided that communicates with the internal passage 50A of the stem of the valve 50 by engaging with the upper end of the stem. In other words, when the user operates the mechanical break-up button 20, the button mechanism moves the stem, and the internal passage 50A of the stem communicates with the inside of the container 40. The mechanical breakup button 20 further includes a cap (not shown) provided to engage with the upper end of the container 40 and surround the button mechanism, and a spray member 30 provided with a nozzle that engages with the end of the mechanical breakup button 20 and communicates with the internal passage C of the mechanical breakup button 20.

[0021] Valve 50 is equipped with a stem, which is, for example, hollow cylindrical or annular in shape. When not in use, the stem is provided in a position that closes the internal passage C to the inside of the container 40. When the trigger of the mechanical breakup button 20 is pulled by the user, the stem moves with the movement of the trigger, opening the closed stem hole and enabling communication between the internal passage C of the mechanical breakup button 20 and the inside of the container 40. Valve 50, although not shown in the figures, is equipped with an opening / closing member for switching communication between the inside and outside of the container 40 when the cleaning aerosol product 10 is operated by the user, a housing to which the opening / closing member is attached, and a mounting member for holding the housing in a predetermined position on the pressure vessel. The opening / closing member includes a stem that slides in conjunction with the button mechanism of the mechanical breakup button 20. As described above, the sliding of the stem switches between communication (spraying state) and shut-off (non-spraying state) of the aerosol composition. The valve 50 has a housing hole for taking in the aerosol composition from the pressure vessel and a stem hole for sending the taken-in aerosol composition to the spraying member. While not particularly limited, the valve 50 can be equipped with large stem holes, such as three with a diameter of φ1.2 mm. The size of the stem holes is also not particularly limited, but from the viewpoint of increasing the injection volume, for example, preferably 0.28 mm. 2 ~5mm 2 More preferably 1.5 mm 2 ~4.5mm 2 This can be done. Furthermore, the valve (stem) can be changed as needed. For example, when treating bathroom floors or the bottom of bathtubs, a weighted valve that allows spraying when tilted on its side, or an inverted valve that can be used even when upside down, can be selected as appropriate.

[0022] The mechanical breakup button 20 is equipped with a trigger that is pivotable when gripped by the user and is linked to the button mechanism. As described above, when the user pulls the trigger, the stem moves, and the internal passage 50A of the stem communicates with the inside of the container 40. Therefore, when the trigger is pulled, the aerosol composition of the container 40 can be sprayed to the outside through the internal passage C in the mechanical breakup button 20. However, the mechanical breakup button 20 does not necessarily have to be equipped with a trigger; for example, it may be equipped with a spray button that the user presses.

[0023] Furthermore, unlike a normal button (straight-type button), the mechanical break-up button 20 has a narrow passage (groove) formed on the back of the nozzle. Due to this groove, the aerosol composition is mechanically rotated when sprayed, resulting in a finer mist than that of a straight-type button. Specifically, when the trigger is pulled, the stem moves and the internal passage 50A of the stem communicates with the inside of the container 40. Once the internal passage 50A and the inside of the container 40 communicate, the aerosol composition in the container 40 reaches the spray member 30 via the internal passage C within the mechanical break-up button 20. Although not shown in the illustration, the flow path of the internal passage C is expanded so that a certain section becomes annular (donut-shaped) when viewed in cross-section from the spray direction side. The annular section of the internal passage C is formed continuously toward the spray member 30 and terminates without reaching the connection point with the spray member 30. Therefore, the aerosol composition in container 40 flows through the internal passage C in the mechanical breakup button 20, and then flows along the annular flow path to the upper part of the internal passage C in Figure 1. Furthermore, the aerosol composition that has flowed along the annular flow path merges at the end of the annular flow path, and is then sent to the spraying member 30, where it is mechanically rotated by a groove formed on the back of the nozzle of the button and sprayed in a mist form.

[0024] The mechanical break-up button 20 is equipped with a spray member 30 at its spray-direction edge, which has a single circular nozzle without partitions. The spray member 30 will be described with reference to Figures 2 and 3. Figure 2 shows an example of the spray member 30 of the mechanical break-up button 20 used in the cleaning aerosol product 10 of this embodiment, where (A) is a cross-sectional view and (B) is a view of the helical mechanism 34 observed from the back side in the spray direction. Figure 3 is a perspective view showing an example of the cross-sectional structure of the spray member 30.

[0025] As shown in Figure 2(A), the spraying member 30 is provided with a nozzle 32 at the end of the spraying direction indicated by arrow D, and the aerosol composition that has passed through the internal passage along the spraying direction indicated by arrow D is sprayed from the nozzle 32. The spraying member 30 is equipped with a helical mechanism 34 in the internal passage, and the aerosol composition is mechanically rotated as it passes through the helical mechanism 34.

[0026] As shown in Figure 2(B), the helical mechanism 34 has a circular hole 36 in the center and a plurality of narrow grooves 38 that communicate with the hole 36 and are provided along the injection direction. In Figure 2(B), four narrow grooves 38 are provided radially from the hole 36. Also, as shown in Figure 2(B), in this embodiment, the helical mechanism 34 is composed of four helical mechanism members 34A to 34D, and the side surface of the narrow groove 38 is formed by two members (helical mechanism members) arranged side by side. For example, in this embodiment, as shown in Figures 2(B) and 3, one of the narrow grooves 38 is provided on the helical mechanism member 34A and the helical mechanism member 34B. However, in this embodiment, the shape and number of narrow grooves 38 in the helical mechanism 34 are not limited and can be changed as appropriate. Also, the narrow grooves 38 may be grooves formed in a spiral shape along the injection direction. The cleaning agent supplied from container 40 is swirled by the action of the narrow grooves 38 as it passes through the spiral mechanism 34, and is discharged from the hole 36.

[0027] As shown by the dashed line in Figure 2(B), the diameter of the hole 36 of the helical mechanism 34 and the diameter of the nozzle 32 of the injection member 30 are designed to be approximately the same. However, in this embodiment, the diameter of the hole 36 of the helical mechanism 34 is not particularly limited, but it is preferable that the diameter of the hole 36 of the helical mechanism 34 be approximately the same as the diameter of the nozzle 32 of the injection member 30, or smaller than the diameter of the nozzle 32 of the injection member 30. The nozzle 32 may be partitioned by a partition (not shown) so that when observed from the injection direction side, the nozzle is divided into multiple openings. The shape of the nozzle 32 divided by the partition is not particularly limited. For example, when the injection member 30 is observed from the injection direction side, various patterns can be adopted, such as (a) the inside of the nozzle 32 being divided equally, (b) being divided into concentric circles, or (c) being divided into multiple shapes (circles, rectangles, etc.). The partition may be formed inside the nozzle 32 integrally with the injection member 30 or using a separate member, or it may be attached externally to the outside of the injection member 30 together with the frame. The shape of the partition itself is not particularly limited, as long as it can divide the opening of the nozzle 32 into a desired shape. For example, it may be a combination of thread-like or plate-like members that divide the opening, or a plate-like member provided with an opening of a desired shape.

[0028] Next, the nozzle area, nozzle diameter, and nozzle length of the mechanical breakup button in this embodiment will be described. The "nozzle area" of the mechanical breakup button refers to the area of ​​the opening when the nozzle 32 provided on the injection direction side edge of the injection member 30 in Figure 2(A) is observed from the injection direction side. In this embodiment, one nozzle is counted for each helical mechanism 34. Therefore, if the nozzle 32 for one helical mechanism 34 is divided into multiple openings by the partition described above, the total area of ​​the multiple openings becomes the "opening area" in this embodiment. Furthermore, as indicated by "φ" in Figure 2(A), the "nozzle diameter" of the mechanical breakup button in this embodiment refers to the diameter of the nozzle 32 provided at the injection-direction side edge of the injection member 30. If the nozzle 32 for one helical mechanism 34 is divided into multiple openings by the partition described above, or if the shape of the nozzle 32 when observed from the injection-direction side (hereinafter sometimes simply referred to as "shape of nozzle 32") is not a perfect circle, the total area of ​​the openings of the nozzle 32 can be measured, and the shape of the nozzle 32 can be considered as a perfect circle with the measured total area, and the diameter of that perfect circle can be considered as the "opening diameter" in this embodiment. Furthermore, if the partition that divides the nozzle 32 is installed as a separate component on the outside of the injection member 30 as described above, the area of ​​the nozzle opening and the diameter of the nozzle at the end of the partition that is a separate component on the injection direction side will be the nozzle area and nozzle diameter, respectively, in this embodiment.

[0029] In this embodiment, the nozzle area of ​​the mechanical break-up button is 1.7 mm². 2 The above conditions, and at least one of the following conditions must be met: (2) The nozzle diameter is 1.5 mm or larger. (1) The nozzle area of ​​the mechanical break-up button is 1.7 mm 2 If at least one of the above conditions, and (2) the nozzle diameter is 1.5 mm or larger, is met, the cleaning agent can be sprayed at a wide angle while maintaining its straightness, allowing the cleaning agent to adhere to the surface to be cleaned over a wide area and uniformly. Therefore, by combining it with the aerosol composition in this embodiment described later, the visibility of the cleaning agent adhering to the surface to be cleaned, the adhesion area of ​​the foamy cleaning agent, and the adhesion time can be improved.

[0030] In this embodiment, there is no particular upper limit to the "nozzle area" of the mechanical break-up button, but if it is too large, the spray angle will narrow and it will not be possible to spray over a wide area, so 29 mm is recommended. 2 The following is preferable: 20 mm 2 The following is more preferable: 3.5 mm 2 The following is even more preferable, with a nozzle area of ​​1.7 mm². 2 ~3.5mm 2 That is particularly preferable.

[0031] In this embodiment, there is no particular upper limit to the "nozzle diameter" of the mechanical break-up button. However, if it is too large, the spray angle will narrow and it will not be possible to spray over a wide area. Therefore, a diameter of 6 mm or less is preferred, 5 mm or less is more preferred, 2.1 mm or less is even more preferred, and a "nozzle diameter" of 1.5 mm to 2.1 mm is particularly preferred. Furthermore, in this embodiment, the combination of nozzle area and nozzle diameter of the mechanical break-up button is such that the nozzle area is 29 mm 2 The following are preferred, with a nozzle diameter of 6 mm or less and a nozzle area of ​​20 mm². 2 The following are more preferable: the nozzle diameter is 5 mm or less, and the nozzle area is 3.5 mm². 2 The following are more preferably the nozzle diameter is 2.1 mm or less, and the nozzle area is 1.7 mm². 2 ~3.5mm 2 It is particularly preferable that the nozzle diameter is 1.5 mm to 2.1 mm.

[0032] In this embodiment, the nozzle 32 is given a circular shape, but the nozzle 32 does not necessarily have to be circular; it may be approximately circular or rectangular. Among these, from the viewpoint of effectively exhibiting the effects of the present invention, it is preferable that the difference between the length of the nozzle 32 in the vertical direction (the direction perpendicular to arrow D in Figure 2(A) on the plane of the paper) and the length in the horizontal direction (the horizontal direction on the plane of the paper relative to the nozzle 32 in Figure 2(B)) is small. Furthermore, when using the distance from the center of the nozzle 32 to the outer edge of the nozzle 32 in each direction as a reference, it is preferable that the difference between the distances from the center of the nozzle 32 to the outer edge of the nozzle 32 is small. From this viewpoint, the shape of the nozzle 32 is preferably approximately circular (including elliptical and linear shapes), square, rhombus, etc., and even more preferably approximately circular. In this embodiment, the mechanical break-up button 20 is shown as using a spray member 30 having one nozzle, but the present invention is not limited to these embodiments, and a mechanical break-up button 20 having multiple nozzles 32 and a helical mechanism 34 may also be used. In this embodiment, the nozzle area and nozzle diameter refer to the opening area or opening diameter obtained from a single nozzle.

[0033] As indicated by “L” in Figure 2(A), the “nozzle length” of the mechanical breakup button in this embodiment means the distance from the side of the spiral mechanism 34 in the injection direction to the end of the injection member 30 in the injection direction. The “nozzle length” of the mechanical breakup button can be considered, for example, the distance from the center of the end of the injection member 30 (i.e., the center of the nozzle 32) to the center of the hole 36 of the spiral mechanism 34. If, as described above, the partition that divides the nozzle 32 is installed as a separate member on the outside of the injection member 30, it can be considered the distance from the center of the end of the injection direction side edge of the partition, which is a separate member, to the center of the hole 36 of the spiral mechanism 34. In this embodiment, the nozzle length of the mechanical break-up button is 3 mm or more. When the nozzle length of the mechanical break-up button is 3 mm or more, when combined with the aerosol composition in this embodiment described later, it is possible to particularly improve the adhesion time of foam that adheres to the surface to be cleaned.

[0034] In this embodiment, there is no particular upper limit to the "nozzle length" of the mechanical break-up button. However, if the nozzle length is too long, the swirling of the cleaning agent in the spiral mechanism will be lost. Therefore, from the viewpoint of ensuring sufficient swirling of the cleaning agent, a length of 30 mm or less is preferred. Similarly, the "nozzle length" is preferably 3 mm to 25 mm, more preferably 3 to 15 mm, even more preferably 4 to 10 mm, and particularly preferably 5 to 7.5 mm.

[0035] There are no particular limitations on the amount of cleaning aerosol product 10 sprayed, but if the amount is extremely small, the required spraying time relative to the surface area to be cleaned will be long, which is unsuitable for the purpose of shortening the time spent on household chores. From this viewpoint, the amount of cleaning aerosol product 10 sprayed is preferably in the range of 2 to 25 g / second, more preferably in the range of 5 to 20 g / second, and particularly preferably in the range of 10 to 15 g / second.

[0036] <Aerosol composition> Next, the aerosol composition in this embodiment will be described. The cleaning aerosol product of this embodiment includes an aerosol composition comprising a cleaning agent containing a surfactant, a solvent, etc., and a propellant such as liquefied petroleum gas (LPG). The aerosol composition is contained in a container.

[0037] (Cleaning agent) The cleaning agent contains at least a surfactant and a solvent, and may contain other components as needed.

[0038] - Surfactants - The surfactant in this embodiment is a component that imparts cleaning power to the detergent, and includes the surfactant represented by formula (1). The surfactant represented by formula (1) is a nonionic surfactant. R 1 -(EO) m -(PO) n -H ···(1) (In the formula, R 1 (where represents a linear or branched alkyl group with 8 to less than 16 carbon atoms, EO represents an ethylene oxide group, PO represents a propylene oxide group, m is 1 to 15, and n is 0 to 5.)

[0039] In the formula, R 1 The number of carbon atoms in the linear or branched alkyl group represented by is 8 or more and less than 16, preferably 8 to 15, and more preferably 10 to 14.

[0040] In the formula, EO represents an ethylene oxide group, and m is a number representing the average number of repeating ethylene oxide groups. When m is in the range of 1 to 15, it tends to be easier to obtain a cleaning effect. m is preferably 7 to 14, and more preferably 9 to 13. In the formula, PO represents a propylene oxide group, and n is a number representing the average number of repeating ethylene oxide groups. When n is in the range of 0 to 5, it tends to be possible to achieve both good visibility of foam when applied and good foam removal when rinsed. A value of 1 to 4 for n is preferred, and a value of 2.5 to 3.5 is more preferred.

[0041] In this embodiment, the surfactant represented by formula (1) is particularly R in terms of foaming ability and cleaning power. 1 :A surfactant with a linear or branched alkyl group having 8 to 15 carbon atoms, m=1 to 15, n=0 to 5 is preferred, R 1 :A surfactant with a linear or branched alkyl group having 10 to 14 carbon atoms, m=7 to 14, n=1 to 4 is more preferable, R 1 :Surfactants with 10 to 14 carbon atoms in a linear or branched alkyl group, m=9 to 13, and n=2.5 to 3.5 are particularly preferred. Examples of surfactants that fit this description include commercially available products such as Softanol EP12030, Softanol 150 (manufactured by Nippon Shokubai Co., Ltd.), FineSurf 9010, Brownon EL-1509, SafetyCut ​​LI-3062, and FineSurf 7045 (manufactured by Aoki Oil & Fat Industry Co., Ltd.).

[0042] Furthermore, while there are no particular limitations on the combination of surfactant and solvent in this embodiment, preferred examples from the viewpoint of high cleaning power and low irritation include the combination of Softanol EP12030 and dipropylene glycol monobutyl ether, and the combination of Softanol EP12030 and diethylene glycol monobutyl ether.

[0043] The amount of surfactant in the detergent is not particularly limited, but from the viewpoint of cleaning power and foaming, it is preferably 1 to 10% by mass, more preferably 2 to 8% by mass, and particularly preferably 3 to 5% by mass, based on the total amount of the detergent. In this embodiment, one type of surfactant may be used alone, or two or more types may be used in combination.

[0044] In this embodiment, the surfactant may be other surfactants in addition to the surfactant shown in formula (1). Examples of other surfactants include anionic surfactants, cationic surfactants, amphoteric surfactants, and so on. In this embodiment, when a surfactant other than the surfactant represented by formula (1) is used in combination, the content is not particularly limited, but from the viewpoint of improving the function as a detergent without impairing the effect of the surfactant represented by formula (1), it is preferably 0.1 to 5% by mass, more preferably 0.5 to 3% by mass, and particularly preferably 1 to 2% by mass, relative to the total amount of the detergent.

[0045] In the detergent, from the viewpoint of foam formation, it is preferable that the content of the surfactant [a] in this embodiment is greater than that of the solvent [b] in this embodiment, and the content ratio [mass ratio: a / b] is preferably 0.45 to 10, more preferably 0.8 to 5, and particularly preferably 1 to 2.

[0046] -solvent- The solvent in this embodiment has a cLogKow of -0.5 to 4.0. The solvent in this embodiment can be used in combination with water, and either a product containing water (for example, a water-containing solvent containing the solvent of this embodiment as an active ingredient) or a product that does not contain water can be used as the solvent. From the viewpoint of ease of handling, etc., a product containing water can be preferably used.

[0047] In this embodiment, "cLogKow," also referred to as "clogP," is a coefficient indicating the affinity of an organic compound for n-octanol and water. More specifically, it is the value expressed in the form of the logarithm cLogKow (i.e., clogP) with respect to base 10, for Kow (i.e., P), which is the n-octanol / water partition coefficient. A lower cLogKow indicates higher hydrophilicity. Generally, LogKow can be determined by measurement using n-octanol and water. Furthermore, cLogKow can be calculated using the atom / fragment contribution method, which involves dividing the structure into fragments (atoms / functional groups), summing the values ​​of each atomic group, and calculating an estimated value using a structure correction coefficient as needed. In this embodiment, for example, the cLogKow value can be referenced from a value calculated using computational chemistry methods from the molecular structure of an organic compound using KOWWIN v1.68 of the EPI Suite™ estimation software developed by the United States Environmental Protection Agency (EPA).

[0048] Using a solvent with a cLogKow of -0.5 to 4.0 suppresses foam breakage and other issues associated with an increase in cLogKow (hydrophobicity), making it easier to retain foam. This also results in good compatibility with the surfactant in this embodiment, a good balance of hydrophilicity and hydrophobicity, and an excellent balance of foam-spreading and foam-adhering properties. From this viewpoint, the cLogKow of the solvent in this embodiment is preferably -0.1 to 3.8, more preferably 0 to 2, and particularly preferably 0.3 to 1.2.

[0049] In this embodiment, preferred solvents are monohydric alcohols, glycol ethers, and their derivatives. Examples of monohydric alcohols include 3-methoxy-3-methyl-1-butanol (cLogKow: 0.46), decanol (cLogKow: 3.79), and ethanol (cLogKow: -0.14). Examples of glycol ethers and their derivatives include dipropylene glycol monobutyl ether (cLogKow: 1.13), 3-methoxy-3-methyl-1-butyl acetate (cLogKow: 1.46), and diethylene glycol. One example is monobutyl ether (cLogKow: 0.29). In terms of foam adhesion area and foam adhesion time, dipropylene glycol monobutyl ether (cLogKow: 1.13), 3-methoxy-3-methyl-1-butyl acetate (cLogKow: 1.46), diethylene glycol monobutyl ether (cLogKow: 0.29), and ethanol (cLogKow: -0.14) are preferred. Among these, dipropylene glycol monobutyl ether is preferred because it has a relatively suppressed irritating odor, high cleaning power, and relatively less fine particles are dispersed.

[0050] The solvent content in the detergent is not particularly limited, but considering that too much solvent may cause an antifoaming effect, it is preferably 1 to 7.5% by mass, more preferably 2 to 5% by mass, and particularly preferably 3 to 4% by mass, relative to the total amount of the detergent, from the viewpoint of ensuring a sufficient amount of foam. In this embodiment, one type of solvent may be used alone, or two or more types may be used in combination. When using solvents other than those with a cLogKow of -0.5 to 4.0 as a solvent, the content of the solvent other than those with a cLogKow of -0.5 to 4.0 relative to 100 parts by mass of the total amount of solvent is not particularly limited, but is preferably 50 parts by mass or less, more preferably 25 parts by mass or less, and particularly preferably 10 parts by mass or less, so as not to impair the compatibility with the surfactant in this embodiment or the balance of hydrophilicity and hydrophobicity.

[0051] -others- As described above, the cleaning agent in this embodiment may also contain, as necessary, other ingredients commonly used in liquid cleaning agents, such as chelating agents, fragrances, rust inhibitors, pH adjusters, disinfectants, sterilizers, viscosity modifiers, preservatives, antifungal agents, pigments, antioxidants, thickeners, ultraviolet absorbers, etc.

[0052] When water is used, there are no particular restrictions on its type; pure water, distilled water, deionized water, ultrapure water, tap water, etc., can all be used. In this embodiment, when water is used, it may be used for purposes such as adjusting the concentration of the embodiment, or, as described above, a product containing the solvent of this embodiment as an active ingredient in water may be used. The water content in the detergent is not particularly limited and can be adjusted as appropriate in relation to the detergent components such as surfactants.

[0053] Chelating agents are used, for example, to achieve a metal ion sequestering effect. Examples of chelating agents include sodium ethylenediaminetetraacetate (EDTA·4Na), sodium hydroxyethylethylenediaminetriacetate, citric acid, sodium citrate, sodium gluconate, and tetrasodium 3-hydroxy-2,2'-iminodisuccinate. When using a chelating agent, the amount of the chelating agent in the detergent is not particularly limited, but from the viewpoint of cleaning power, it is preferably 0.1 to 5% by mass, more preferably 0.5 to 4% by mass, and particularly preferably 1 to 3% by mass, relative to the total amount of the detergent.

[0054] When fragrances are used, the amount of fragrance in the detergent is not particularly limited, but from the viewpoint of mitigating the characteristic odor of surfactants and solvents, it is preferably 0.1 to 1% by mass, and more preferably 0.2 to 0.5% by mass, relative to the total amount of the detergent.

[0055] Furthermore, from the viewpoint of suppressing rust on the inner surface of the container (can), the cleaning agent may contain a rust inhibitor. Examples of rust inhibitors include at least one selected from the group consisting of sodium nitrite, ammonia, triethanolamine, diethylethanolamine, sodium benzoate, and combinations thereof. When using a rust inhibitor, the amount of rust inhibitor to be added should be appropriately selected according to the material of the can used. For example, the amount of rust inhibitor is not particularly limited, but from the viewpoint of obtaining a sufficient rust-preventive effect, it is preferably 0.01 to 3% by mass, more preferably 0.05 to 1.5% by mass, and particularly preferably 0.1 to 1% by mass, relative to the total amount of the cleaning agent.

[0056] In this embodiment, a pH adjuster may be used to adjust the pH of the detergent. Examples of pH adjusters include at least one selected from the group consisting of sodium bicarbonate, sodium carbonate, citric acid and its salts, phosphoric acid and its salts, ammonia, triethanolamine, sodium hydroxide, and combinations thereof. When using a pH adjuster, the content of the pH adjuster is not particularly limited, but in order to appropriately adjust the pH from the viewpoint of cleaning power and can stability, it is preferably 0.01 to 15% by mass, more preferably 0.05 to 10% by mass, and particularly preferably 0.1 to 5% by mass, relative to the total amount of the detergent.

[0057] The cleaning agent in this embodiment may contain a disinfectant. Examples of disinfectants include quaternary ammonium salts such as benzalkonium chloride, amphoteric surfactant-based disinfectants such as IPMP and dodecylaminoethylaminoethylglycine, and multiple components may be used in combination. When using a disinfectant, the amount of disinfectant contained in the cleaning agent is not particularly limited, but from the viewpoint of obtaining a sufficient disinfecting effect on the surface to be cleaned, it is preferably 0.01 to 3% by mass, more preferably 0.05 to 1.5% by mass, and particularly preferably 0.1 to 1% by mass, relative to the total amount of the cleaning agent.

[0058] (propellant) The aerosol composition in this embodiment includes a propellant along with a cleaning agent. The cleaning aerosol product in this embodiment includes liquefied petroleum gas (LPG) as the propellant.

[0059] In the cleaning aerosol product of this embodiment, the internal pressure at 20°C is 0.3 MPa or higher. Here, "internal pressure at 20°C is 0.3 MPa or higher" means that the air pressure inside the container of the cleaning aerosol product is 0.3 MPa or higher at 20°C. When the internal pressure of the cleaning aerosol product of this embodiment is 0.3 MPa or higher at 20°C, the condition of the ejected foam is good and its visibility is excellent. There is no particular upper limit to the internal pressure of the cleaning aerosol product of this embodiment at 20°C, but from the viewpoint of handling, etc., 0.6 MPa or lower is preferred. There is no particular limit to the internal pressure of the cleaning aerosol product of this embodiment at 20°C, but from the viewpoint of foam condition and handling, etc., 0.4 to 0.6 MPa is preferred, and 0.45 to 0.6 MPa is even more preferred. Therefore, as LPG, LPG with a pressure of 0.29 to 0.5 MPa can be used.

[0060] The internal pressure inside the container at 20°C can be measured, for example, using a commercially available pressure measuring device. A flush diaphragm type (such as Kyowa Electric Industry's "PGM-E") can be used as such a device.

[0061] The amount of propellant in the aerosol composition can be appropriately changed depending on the intended use and the combination with the cleaning agent, and is not particularly limited. For example, from the viewpoint of adhesion of the cleaning agent to the surface to be cleaned, the liquid-gas ratio [volume ratio: x / y] of the cleaning agent [x] to the propellant [y] is preferably [x / y] = 95 / 5 to 50 / 50, more preferably 90 / 10 to 70 / 30, and even more preferably 90 / 10 to 80 / 20.

[0062] 《Washing Method》 The cleaning aerosol product of this embodiment described above can be used for various cleaning purposes, such as windows, screens, walls, flooring, and car bodies, but is particularly suitable for cleaning bathrooms. Here, "bathroom" includes walls such as the side walls, floor, and ceiling, as well as bathroom fixtures such as bathtubs and other surfaces to be cleaned. The cleaning method of this embodiment includes a mechanical break-up button with a nozzle diameter of 1.5 mm or more and a nozzle length of 3 mm or more, and comprises a surfactant represented by the following formula (1), a solvent with a cLogKow of -0.5 to 4.0, and liquefied petroleum gas as a propellant. This method involves applying foam to the surface to be cleaned using a cleaning aerosol product with an internal pressure of 0.3 MPa or higher at 20°C. R 1 -(EO) m -(PO) n -H ···(1) (In the formula, R 1 (where represents a linear or branched alkyl group with 8 to less than 16 carbon atoms, EO represents an ethylene oxide group, PO represents a propylene oxide group, m is 1 to 15, and n is 0 to 5.)

[0063] The materials of the bathroom to which the cleaning method of this embodiment is applied are not particularly limited, and include, for example, unit baths (made of fiber-reinforced plastics; hereinafter sometimes referred to as "FRP"), tiles, marble, etc. In addition, in the cleaning method of this embodiment, there is no particular limit to the distance from the surface to be cleaned when spraying, but if it is too close, the cleaning agent will reach the surface to be cleaned before it can spread widely, and the effect of the present invention, which is to be able to spray over a wide area, will not be fully obtained, and problems such as the cleaning agent splashing may occur, and if it is too far, the cleaning agent will not reach, so a distance of 20 to 200 cm is preferred, 25 to 150 cm is more preferred, and 30 to 100 cm is particularly preferred. Furthermore, considering the structure of the bathroom, for example, when cleaning the wall on the side where the bathtub is installed, it is expected that the burden on the user will be further reduced if the cleaning agent can be sprayed onto the surface to be cleaned from a certain distance away. In this respect, the cleaning aerosol product of this embodiment can be easily sprayed over a wide area and adhere to a foam with excellent visibility even when the distance from the surface to be cleaned is a certain distance away. From this viewpoint, in the cleaning method of this embodiment, the distance from the surface to be cleaned during spraying can preferably be 40 to 200 cm, more preferably 40 to 140 cm, and particularly preferably 60 to 100 cm. Furthermore, the user's spraying position is not limited to inside the bathroom; spraying may also be done from outside the bathroom.

[0064] As described above, the present invention has been explained using embodiments, but various modifications are possible without departing from its essence. For example, within the scope of the ordinary creative ability of a person skilled in the art, some components of one embodiment can be added to other embodiments. Also, some components of one embodiment can be replaced with corresponding components of other embodiments. [Examples]

[0065] The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples.

[0066] [Manufacturing of cleaning aerosol products] Each cleaning agent (sample) was prepared by mixing the compositions shown in Tables 1-3 below. 450 mL of the resulting cleaning agent was then sprayed into a mechanical break-up button (button: nozzle area 1.77 mm²). 2 The cleaning aerosol products for the examples or comparative examples were obtained by sealing a container (can type: AE480 (capacity 577mL)) equipped with a nozzle diameter of φ1.5mm, nozzle length of 6mm, number of nozzles (no partition, circular); valve: φ1.2mm x 3 stem holes) together with LPG 0.49MPa. The numerical values ​​in the table for the formulation of each sample represent the "mass %" of the active ingredient contained in each raw material (the ingredient listed in the "Ingredient Name" column in the table). For raw materials with "AI" and the amount of active ingredient in the raw material appended in the "Raw Material Name" column in the table, the raw materials were formulated so that the amount of active ingredient corresponds to the mass % in the table, and the cleaning agent was prepared. The volume ratio of cleaning agent to propellant is 90 / 10.

[0067] The following evaluations were performed on each sample using the obtained cleaning aerosol products.

[0068] [Visibility of foam] A sample was sprayed onto the bathroom wall (surface to be cleaned) of an FRP unit bath from a distance of 76 cm for 0.5 seconds. Afterwards, the properties of the foam were observed visually on the surface to be cleaned, and the visibility was evaluated according to the following criteria. -standard- A: From a distance of 76 cm, it reached the surface to be cleaned and adhered to it in a foamy form, and the foam on the surface to be cleaned was easily visible. From a distance of 76 cm, the foam on the surface being cleaned could not be easily seen, as it reached the surface and adhered to it in a liquid state. From a distance of 76 cm, the foam did not reach the surface being cleaned and could not be seen.

[0069] [Area of ​​foam adhesion] A sample was sprayed onto the bathroom wall (surface to be cleaned) of an FRP unit bath from a distance of 76 cm for 0.5 seconds. The area of ​​application was then roughly defined as a circle, and the maximum width of the application area was measured using a measuring tape. This was considered the diameter, and the area was calculated and evaluated according to the following criteria. -standard- A: The area of ​​attachment is 1200 cm² 2 It was incredible. B: The area of ​​attachment is 1000 cm² 2 Super 1200cm 2 The results were as follows: C: The area of ​​adhesion is 800 cm² 2 Super 1000cm 2 The results were as follows: D: The area of ​​attachment is 800 cm². 2 The results were as follows:

[0070] [Foam adhesion time] A sample was sprayed onto the bathroom wall (surface to be cleaned) of an FRP unit bath from a distance of 76 cm for 0.5 seconds. The time from immediately after spraying until the foam began to drip was measured and evaluated according to the following criteria. -standard- A: It was over 20 seconds. B: The time was between 10 and 20 seconds. C: The time was between 5 seconds and 10 seconds. D: It was 5 seconds or less.

[0071] [Table 1]

[0072] [Table 2]

[0073] [Table 3]

[0074] As can be seen from Table 1, the examples using the surfactant in this embodiment showed particularly superior visibility due to a wider foam adhesion area compared to comparative examples using other surfactants. Furthermore, while the foam was concentrated in one place in samples No. 6 and 7, the foam in examples No. 1 to No. 5 and No. 9 to No. 12 was not concentrated in one place but spread uniformly, resulting in particularly superior visibility. As can be seen from Tables 2 and 3, the examples using solvents in this embodiment showed a particularly large foam adhesion area and superior foam adhesion time compared to the sample using only water without a solvent (Sample No. 13) and the comparative examples using other solvents. Furthermore, while the foam was concentrated in one place in Samples No. 13 to No. 15, in Examples No. 16 to No. 22, the foam was not concentrated in one place but spread uniformly, resulting in particularly excellent visibility.

[0075] [Nozzle diameter and nozzle length of mechanical break-up button] As shown in Table 4 below, the evaluation described above was performed in the same manner as described above, except that the nozzle area, nozzle diameter, nozzle length of the mechanical break-up button, and the propellant pressure were changed. Sample No. 1 was used as the cleaning agent.

[0076] [Table 4]

[0077] [Table 5]

[0078] As can be seen from Tables 4 and 5, when the internal pressure of the container is 0.3 MPa or higher, it was confirmed that the foam visibility and foam adhesion time are particularly superior to the comparative example (No. 34). Furthermore, as can be seen from these tables, the examples using a mechanical break-up button that meets the nozzle diameter and nozzle length specified in this embodiment were found to have particularly superior foam visibility, a wider adhesion area, and the ability to spray foamy cleaning agent at a wide angle, compared to comparative examples that do not meet the nozzle diameter specified in this embodiment. In addition, samples No. 25, No. 26, No. 30-32, and No. 35-38 of the examples showed that the foam was not concentrated in one place but spread uniformly, resulting in particularly excellent visibility. Furthermore, it was confirmed that the embodiment using a mechanical break-up button that satisfies the nozzle diameter and nozzle length specified in this embodiment showed particularly good foam adhesion time compared to the comparative example that did not satisfy the nozzle length specified in this embodiment.

[0079] As described above, the cleaning aerosol product of this embodiment allows for the application of a foamy cleaning agent to the surface to be cleaned over a wide area and continuously. Therefore, the foam has a large surface area, reducing the number of sprays and spraying time of the cleaning agent. Furthermore, the cleaning agent is highly visible after spraying, allowing for even and efficient cleaning of the entire surface to be cleaned, thus shortening cleaning time and saving labor. Moreover, the cleaning aerosol product allows for good foam adhesion time to the surface to be cleaned, enabling the cleaning agent to exert its full cleaning effect, resulting in superior cleaning efficiency and further shortening cleaning time and saving labor. [Explanation of Symbols]

[0080] 10 Cleaning Aerosol Products 20 Mechanical Break-Up Buttons 30 Injection member 32 spout 34 Spiral mechanism section 34A~D Helical mechanism components 36 Hole 38 Narrow groove 40 containers 50 valves 60 Aerosol compositions

Claims

1. Nozzle area is 1.7 mm 2 Furthermore, it is equipped with a mechanical break-up button with a nozzle length of 3 mm or more. A surfactant represented by the following formula (1), cLogKow is a solvent with a value of -0.5 to 4.0, It contains liquefied petroleum gas as a propellant, A cleaning aerosol product having an internal pressure of 0.3 MPa or higher at 20°C. 2 1 -(59) m -(0) n ・・・(1) (In the formula, R 1 (wherein ∫ represents a linear or branched alkyl group having 8 or more carbon atoms but less than 16, EO represents an ethylene oxide group, PO represents a propylene oxide group, m is 1 to 15, and n is 0 to 5.)

2. Equipped with a mechanical break-up button with a nozzle diameter of 1.5 mm or more and a nozzle length of 3 mm or more, A surfactant represented by the following formula (1), cLogKow is a solvent with a value of -0.5 to 4.0, It contains liquefied petroleum gas as a propellant, A cleaning aerosol product having an internal pressure of 0.3 MPa or higher at 20°C. 2 1 -(59) m -(0) n ・・・(1) (in the formula, R 1 represents a linear or branched alkyl group having 8 or more and less than 16 carbon atoms, EO represents an ethylene oxide group, PO represents a propylene oxide group, m is from 1 to 15, and n is from 0 to 5.)

3. Nozzle area is 1.7 mm 2 Furthermore, it is equipped with a mechanical break-up button with a nozzle length of 3 mm or more. A surfactant represented by the following formula (1), cLogKow is a solvent with a value of -0.5 to 4.0, It contains liquefied petroleum gas as a propellant, A cleaning method that involves applying foam to a surface to be cleaned using a cleaning aerosol product having an internal pressure of 0.3 MPa or higher at 20°C. 2 1 -(59) m -(0) n ・・・(1) (In the formula, R 1 (wherein ∫ represents a linear or branched alkyl group having 8 or more carbon atoms but less than 16, EO represents an ethylene oxide group, PO represents a propylene oxide group, m is 1 to 15, and n is 0 to 5.)

4. Equipped with a mechanical break-up button with a nozzle diameter of 1.5 mm or more and a nozzle length of 3 mm or more, A surfactant represented by the following formula (1), cLogKow is a solvent with a value of -0.5 to 4.0, It contains liquefied petroleum gas as a propellant, A cleaning method that involves applying foam to a surface to be cleaned using a cleaning aerosol product having an internal pressure of 0.3 MPa or higher at 20°C. 2 1 -(59) m -(0) n ・・・(1) (In the formula, R 1 (wherein ∫ represents a linear or branched alkyl group having 8 or more carbon atoms but less than 16, EO represents an ethylene oxide group, PO represents a propylene oxide group, m is 1 to 15, and n is 0 to 5.)

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