JP-7856909-B2 - Aerosol composition and aerosol can containing the same

Inventors

• 橋本 昇悟
• 鈴木 宏則

Assignees

• 株式会社スリーボンド

Dates

Publication Date

20260512

Application Date

20220214

Priority Date

20210217

Claims (6)

1. An aerosol composition for use in cleaning, comprising the following components (A) and (B), wherein the amount of component (B) is 0.01 to 0.20 parts by mass per 100 parts by mass of component (A) . (A) Component: Fluorine-based solvent (B) Component: Helium gas as a propellant Here, component (A) comprises cis-1-chloro-3,3,3-trifluoropropene and perfluoropolyether.
2. The aerosol composition according to claim 1 , wherein the propellant of component (B) consists solely of helium gas.
3. The aerosol composition according to claim 1 , wherein the propellant of component (B) consists of helium gas and another propellant.
4. An aerosol can filled with the aerosol composition according to any one of claims 1 to 3 .
5. A cleaning method comprising spraying component (A) from the aerosol can described in claim 4 to clean contaminants adhering to a contaminated area.
6. The cleaning method according to claim 5 , wherein the contaminated part is a brake device.

Description

This invention relates to an aerosol composition suitable for cleaning contaminants such as oils and greases from surfaces made of metal, resin, and the like. Conventionally, inventions have been known in which a fluorine-based non-flammable cleaning agent is filled into an aerosol can, as described in Japanese Patent Publication No. 2017-200989 (corresponding to U.S. Patent Application Publication No. 2020/17979). Furthermore, known propellants for liquefied gases include dimethyl ether (DME), isobutane, and liquefied petroleum gas (LPG), while known propellants for compressed gases include nitrogen, carbon dioxide, nitrous oxide, and compressed air. Liquefied gases are highly volatile and tend to produce a large spray pattern (cross-section perpendicular to the direction of fluid ejection), sometimes preventing the cleaning agent from reaching the contaminated area. On the other hand, depending on the type of compressed gas, the pressure inside the aerosol can may decrease with use, presumably due to the gas dissolving in the undiluted liquid. Therefore, it was necessary to fill the can with a large amount of compressed gas to maintain continuous pressure inside the aerosol can. Even so, as the compressed gas is consumed, the spraying force of the cleaning agent tends to decrease towards the end. As described above, with conventional technology, it was difficult to accurately clean contaminated areas by maintaining a consistently high spray force as an aerosol until the end while keeping the spray pattern narrow. The present invention has been made in view of the above circumstances, and aims to provide an aerosol composition that can maintain a consistently high spray force until the end. Another object of the present invention is to provide an aerosol composition that can maintain a narrow spray pattern while maintaining a consistently high spray force until the end. Yet another object of the present invention is to provide an aerosol can and a cleaning method using the above aerosol composition. As a result of diligent research to achieve the above objective, the inventors of the present invention discovered that the aerosol composition described in detail below and the aerosol can containing it can continuously maintain a high aerosol spraying force until the very end, thus completing the present invention. The gist of the present invention is described below. The first embodiment of the present invention is an aerosol composition comprising the following components (A) and (B): (A) Component: Fluorine-based solvent (B) Component: Helium gas as a propellant. A second embodiment of the present invention is the aerosol composition according to the first embodiment, wherein component (A) consists solely of cis-1-chloro-3,3,3-trifluoropropene. A third embodiment of the present invention is the aerosol composition according to the first embodiment, wherein component (A) comprises cis-1-chloro-3,3,3-trifluoropropene. A fourth embodiment of the present invention is the aerosol composition according to the third embodiment, wherein component (A) comprises cis-1-chloro-3,3,3-trifluoropropene and a hydrofluoroolefin, hydrochlorofluorocarbon, hydrofluoroether, hydrofluorocarbon, or perfluoropolyether. A fifth embodiment of the present invention is an aerosol composition according to any of the first to fourth embodiments, wherein the propellant of component (B) consists solely of helium gas. A sixth embodiment of the present invention is an aerosol composition according to any of the first to fourth embodiments, wherein the propellant of component (B) consists of helium gas and another propellant. A seventh embodiment of the present invention is an aerosol composition according to any of the first to sixth embodiments, used for cleaning. The eighth embodiment of the present invention is an aerosol can filled with the aerosol composition described in any of the first to seventh embodiments. The ninth embodiment of the present invention is an aerosol can having a double-walled structure with an inner bag inside, wherein the following component (A) is filled into the inner bag and the following component (B) is filled between the aerosol can and the inner bag: (A) Component: Fluorine-based solvent (B) Component: Helium gas as a propellant. The tenth embodiment of the present invention is an aerosol can according to the ninth embodiment, wherein a cylindrical member is attached which can be fitted into the discharge port of an actuator mounted on the stem of the aerosol can and which has a flow path for discharging the (A) component to the outside of the aerosol can. An eleventh embodiment of the present invention is an aerosol can according to the tenth embodiment, wherein the flow path at the end of the cylindrical member having the flow path that discharges to the outside of the aerosol can is tapered in shape, either widening at the end or narrowing at the base. A twelfth embodiment of the present invention is a