Film-forming material and cleaning agent

Abstract

To provide a fluorine-based organic solvent that can, when used as a cleaning agent, reduce damage to an object being cleaned and enhance the solubility of various components, as well as further reducing environmental impact.SOLUTION: A solvent composition comprises: (A) a fluoroketone compound represented by general formula (1) in the figure; and (B) a fluorine-containing solvent that is not the component (A). (In the formula, n is an integer from 1 to 3, and m is an integer from 1 to 3.)SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a solvent composition, a film-forming material, and a cleaning agent. [Background technology]

[0002] Fluoroketone compounds such as perfluoro(2-methyl-3-pentanone) have a stable supply chain and are used in various industrial applications. For example, Patent Document 1 describes the use of fluoroketone as a blowing agent for heat-expandable microspheres. Patent Documents 2 and 3 describe the use of fluoroketone as a fire extinguishing agent. Patent Documents 4 and 5 describe the use of fluoroketone as a fire extinguishing hydraulic fluid. Patent Documents 6 and 7 describe the use of fluoroketone as a cooling medium. Patent Document 8 describes the use of fluoroketone as a molten metal treatment agent (cover gas). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 7259140 [Patent Document 2] JP 2020-130661 A [Patent Document 3] International Publication No. 2020 / 054306 [Patent Document 4] Patent No. 6043555 [Patent Document 5] Patent No. 4966793 [Patent Document 6] JP 2014-031960 A [Patent Document 7] Patent No. 5448176 [Patent Document 8] Patent No. 3866717 Summary of the Invention [Problem to be solved by the invention]

[0004] On the other hand, fluorine-based solvents are widely used as solvent components of industrial cleaning agents and solvents for various coating materials. Further improvement of these fluorine-based solvents is desired in terms of further reducing damage to objects to be cleaned when used as cleaning agents, further increasing the dissolving power of active ingredients contained in various coating materials, and further reducing the environmental load.

[0005] The present invention has been made in consideration of the above problems, and an object of the present invention is to provide a fluorine-based solvent composition having excellent dissolution stability between solvents, and a fluorine-based coating-forming material and cleaning agent capable of stably dissolving an active ingredient. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides 1. A solvent composition comprising: (A) a fluoroketone compound represented by the following general formula (1), and (B) A fluorine-containing solvent other than the component (A) The solvent composition comprises: [ka] (In the formula, n is an integer of 1 to 3, and m is an integer of 1 to 3.)

[0007] Such a solvent composition is a fluorine-based solvent composition having excellent dissolution stability between the solvents.

[0008] The component (A) is preferably at least one selected from the group consisting of perfluoro(2-methyl-3-pentanone), perfluoro(3-methyl-2-butanone), and 2,4-bis(trifluoromethyl)octafluoro-3-pentanone.

[0009] From a practical standpoint, it is preferable to use such a fluoroketone compound as the component (A).

[0010] The component (B) is preferably at least one selected from the group consisting of hydrofluoroethers, hydrofluoroolefins, hydrochlorofluoroolefins, hydrofluorocarbons, perfluorocarbons, and perfluoropolyethers.

[0011] As the component (B), various fluorine-containing solvents can be used, but from a practical standpoint, it is preferable to use these fluorine-containing solvents.

[0012] In the present invention, A coating material comprising: (1A) the above solvent composition, and (1B) Coating component The present invention provides a coating material comprising:

[0013] The solvent composition of the present invention has excellent dissolution stability between the solvents and can stably dissolve the active ingredients of various coating-forming materials, and therefore can be suitably used as a solvent component for coating-forming materials.

[0014] In this case, the film-forming material is preferably a film-forming lubricant, a lubricant coating agent, or a fluorine coating agent.

[0015] From a practical standpoint, the coating material of the present invention is particularly preferably used for such applications.

[0016] In the present invention, A cleaning agent comprising: (2A) the above solvent composition, and (2B) Cleansing ingredients The present invention provides a cleaning agent comprising:

[0017] The solvent composition of the present invention has excellent dissolution stability between the solvents and can stably dissolve the active ingredients of various cleaning agents, and therefore the solvent composition of the present invention can be suitably used as a solvent component of cleaning agents.

[0018] In this case, the component (2B) preferably contains a hydrochlorofluoroolefin and / or trans-1,2-dichloroethylene.

[0019] Such compounds can be used as cleaning components.

[0020] The solvent composition of the present invention can also be used as a heat transfer medium, a foaming agent, a cover gas, a flash point depressant, or an insulating medium.

[0021] The solvent composition of the present invention can be used in various industrial fields other than as a film-forming material or a cleaning agent.

[0022] In addition, in the present invention, A coating material comprising: (3A) a solvent comprising a fluoroketone compound represented by the following general formula (1), and (3B) Coating component The present invention provides a coating material comprising: [ka] (In the formula, n is an integer of 1 to 3, and m is an integer of 1 to 3.)

[0023] The present invention is not limited to the above-mentioned embodiment in which a mixed solvent of a specific fluoroketone compound and other fluorine-containing solvents is used as a fluorine-based solvent component. That is, the coating material of the present invention may contain only a specific fluoroketone compound as a fluorine-based solvent component, and may not contain other fluorine-containing solvents.

[0024] In this case, the component (3A) is preferably at least one selected from the group consisting of perfluoro(2-methyl-3-pentanone), perfluoro(3-methyl-2-butanone), and 2,4-bis(trifluoromethyl)octafluoro-3-pentanone.

[0025] From a practical standpoint, it is preferable to use such a fluoroketone compound as the component (3A).

[0026] The film-forming material is preferably a film-forming lubricant, a lubricant coating agent, or a fluorine coating agent.

[0027] From a practical standpoint, the coating material of the present invention is particularly preferably used for such applications.

[0028] In addition, in the present invention, A cleaning agent comprising: (4A) a solvent comprising a fluoroketone compound represented by the following general formula (1), and (4B) Cleansing ingredients The present invention provides a cleaning agent comprising: [ka] (In the formula, n is an integer of 1 to 3, and m is an integer of 1 to 3.)

[0029] The present invention is not limited to the above-mentioned embodiment in which a mixed solvent of a specific fluoroketone compound and other fluorine-containing solvents is used as a fluorine-based solvent component. That is, the cleaning agent of the present invention may contain only a specific fluoroketone compound as a fluorine-based solvent component, and may not contain other fluorine-containing solvents.

[0030] In this case, the component (4A) is preferably at least one selected from the group consisting of perfluoro(2-methyl-3-pentanone), perfluoro(3-methyl-2-butanone), and 2,4-bis(trifluoromethyl)octafluoro-3-pentanone.

[0031] From a practical standpoint, it is preferable to use such a fluoroketone compound as the component (4A).

[0032] In addition, the component (4B) preferably contains a hydrochlorofluoroolefin and / or trans-1,2-dichloroethylene.

[0033] Such compounds can be used as cleaning components. Effect of the Invention

[0034] The present invention can provide a fluorine-based solvent composition having excellent dissolution stability between solvents, and a fluorine-based film-forming material and cleaning agent capable of stably dissolving an active ingredient.Furthermore, the present invention can provide a fluorine-based organic solvent, a film-forming material, and a cleaning agent that can reduce damage to an object to be cleaned when used as a cleaning agent, can increase the dissolving power of various ingredients, and can further reduce the environmental load. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0035] As described above, there has been a demand for the development of a fluorine-based solvent composition having excellent dissolution stability between solvents, and a fluorine-based film-forming material and cleaning agent capable of stably dissolving an active ingredient.

[0036] As a result of intensive research into the above-mentioned problems, the inventors focused on fluoroketone compounds, which have not attracted much attention in the fields of film-forming materials and solvents used in cleaning agents. In particular, perfluoro(2-methyl-3-pentanone), a type of fluoroketone compound, is mass-produced by multiple companies, so a stable supply chain can be established; it is composed of carbon, fluorine, and oxygen, so it is considered to have excellent compatibility with materials like perfluorocarbons and perfluoropolyethers; it has a high fluorination rate in its structure (about 72%), so it is considered to be easily compatible with other fluorine-based solvents and fluorine oils, and its global warming potential (GWP) value is about the same as that of carbon dioxide (CO2). 2Since the molecular weight ratio of fluoroketone compounds is 1, which is the same as that of fluoroketone compounds in the above, the present inventors have found that fluoroketone compounds can be excellent solvents in the fields of film-forming materials and cleaning agents, and have completed the present invention.

[0037] The present invention will be described in detail below, but the present invention is not limited thereto. In the following description, the present invention will be described by dividing it into a first embodiment (a composition that essentially contains a specific fluoroketone compound and other fluorine-containing solvents) and a second embodiment (a composition that essentially contains a specific fluoroketone compound and does not essentially contain other fluorine-containing solvents) based on the composition of the solvent components.

[0038] [First aspect] In a first aspect of the present invention, there is provided a solvent composition, and a coating material, a cleaning agent, and various other uses using the solvent composition. The following provides a more detailed description.

[0039] [Solvent composition] The solvent composition of the present invention is a solvent composition containing (A) a fluoroketone compound represented by the following general formula (1) and (B) a fluorine-containing solvent other than the component (A). [ka] (In the formula, n is an integer of 1 to 3, and m is an integer of 1 to 3.)

[0040] <Component (A)> The component (A) is not particularly limited as long as it is a fluoroketone compound having a structure represented by general formula (1). 1 and Rf 2 may each independently be any one of a perfluoromethyl group, a perfluoroethyl group, and a perfluoropropyl group, and the perfluoropropyl group may be any one of the structural isomers (normal propyl group, isopropyl group).

[0041] Specific examples of the component (A) include, for example, one or more selected from the group consisting of perfluoro(2-methyl-3-pentanone), perfluoro(3-methyl-2-butanone), and 2,4-bis(trifluoromethyl)octafluoro-3-pentanone, and among these, it is more preferable to include perfluoro(2-methyl-3-pentanone) which has a global warming potential (GWP) value of 1.

[0042] <(B) component> The component (B) is not particularly limited as long as it is a fluorine-containing solvent other than the component (A). The component (B) can be, for example, one or more selected from the group consisting of hydrofluoroethers, hydrofluoroolefins, hydrochlorofluoroolefins, hydrofluorocarbons, perfluorocarbons, and perfluoropolyethers.

[0043] Examples of hydrofluoroethers include methyl perfluoropropyl ether (GWP value = 530), methyl nonafluoroisobutyl (butyl) ether (GWP value = 297), ethyl nonafluoroisobutyl (butyl) ether (GWP value = 57), 1,1,1,2,3,4,4,5,5,5-decafluoro-3-methoxy-2-(trifluoromethyl)pentane (GWP value = 310), 1,1,2,2-tetrafluoro-2,2,2-trifluoroethyl ether (GWP value = 870), 1,1,2,3,3,3-hexafluoropropyl methyl ether (GWP value = 101), and 1,1,1,3,3,3-hexafluoroisopropyl methyl ether (GWP value = 8).

[0044] Examples of hydrochlorofluoroolefins include cis-1-chloro-3,3,3-trifluoropropene (GWP value <1), trans-1-chloro-3,3,3-trifluoropropene (GWP value <1), trans / cis-1-chloro-2,3,3-trifluoropropene (GWP value <1), and cis-1-chloro-2,3,3,3-tetrafluoropropene (GWP value <1).

[0045] Examples of hydrofluoroolefins include cis-1,1,1,4,4,4-hexafluoro-2-butene (GWP value=2), perfluoroheptene (GWP value<10), and 2 / 3-methoxyperfluoroheptene (GWP value=2.5).

[0046] Hydrofluorocarbons include 1,1,1,3,3-pentafluorobutane (GWP value=804), 1,1,1,2,2,3,4,5,5,5-decafluoropentane (GWP value=1650), 1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluorohexane (GWP value=2000), and 1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluorooctane (GWP value=136).

[0047] Examples of perfluorocarbons include perfluoroalkylamines, perfluoroalkylmorpholines, perfluoroalkanes, and perfluoroethers, and these preferably have 5 to 18 carbon atoms.

[0048] Perfluoropolyether has a number average molecular weight of 300 to 1600, and is (OCF(CF 3 )CF 2 ) units, (OCF 2 CF 2 ) units, and (OCF 2 ) is a compound containing any one of the units selected from the following:

[0049] In the solvent composition of the present invention, the ratio of the component (A) to the component (B) ((A) / (B)) is not particularly limited, but is preferably in the range of 5 / 95 to 95 / 5.

[0050] The solvent composition of the present invention may contain a solvent other than the components (A) and (B) as necessary.

[0051] [Coating material] The coating material of the present invention is a coating material containing (1A) the above-mentioned solvent composition and (1B) a coating component.

[0052] In the film-forming material of the present invention, the above-mentioned solvent composition may be used as component (1A). Component (1B) is a film component, that is, a component (so-called active component) that forms a film (coating film) on the surface of the substrate after the film-forming material of the present invention is applied and component (1A) volatilizes. Component (1B) may be selected appropriately depending on the application of the film-forming material of the present invention. From the viewpoint of compatibility with component (1A), component (1B) is preferably a component containing fluorine.

[0053] The application of the coating material of the present invention is not particularly limited, but it can be used, for example, as a coating lubricant, a lubricant coating agent, or a fluorine coating agent.

[0054] A coating lubricant is a material that, for example, when applied to the sliding part of an object, reduces friction and prevents wear of the object that constitutes the sliding part. When the coating material of the present invention is a coating lubricant, it is preferable that component (1B) contains fluorine oil. Component (1B) may further contain a curable fluorine resin and various additives as necessary.

[0055] The lubricating coating agent is, for example, a material that acts to impart lubricity to the exterior of an electronic device. An example of the substrate is a touch panel of a smartphone. When the coating material of the present invention is a lubricating coating agent, it is preferable that the component (1B) contains a curable fluororesin. The component (1B) may further contain a fluorine oil or various additives as necessary.

[0056] A fluorine coating agent is, for example, a material that functions to impart water repellency and antifouling properties to the exterior of an electronic device. When the film-forming material of the present invention is a fluorine coating agent, it is preferable that the component (1B) contains a curable fluorine resin. The component (1B) may further contain a fluorine oil or various additives as necessary.

[0057] The fluorine oil used in this case is not particularly limited, but examples thereof include perfluoropolyether (PFPE) compounds having any of the structures of the following general formulae (FO-1) to (FO-4). [ka] (wherein m, n, p, and q are integers of 0 or more and 300 or less).

[0058] The curable fluororesin used in this case is not particularly limited, but examples thereof include fluoroacrylate or fluoromethacrylate compounds having any of the structures of the following general formulae (FR-1) to (FR-4). [ka]

[0059] The content ratio of the (1B) coating component in the coating material of the present invention (i.e., the concentration of the active ingredient) is not particularly limited, and may be appropriately selected depending on the application. The method of applying the coating material of the present invention to the substrate is also not particularly limited, and may be a conventionally known method such as immersion, brushing, spraying, etc. In addition, when the coating material is cured after application, the curing method may be appropriately selected from conventionally known methods such as heat curing and photocuring.

[0060] [Cleaning agent] The cleaning agent of the present invention is a cleaning agent that contains (2A) the above-mentioned solvent composition and (2B) a cleaning component.

[0061] In the cleaning agent of the present invention, the above-mentioned solvent composition may be used as the component (2A). The component (2B) is a component that exerts a cleaning effect on the object to be cleaned, and an appropriate substance may be selected depending on the intended use of the cleaning agent of the present invention. The component (2B) may be, for example, a component containing fluorine, and preferred examples include hydrochlorofluoroolefin, trans-1,2-dichloroethylene, methanol, ethanol, isopropyl alcohol, etc.

[0062] The content ratio of the (2B) cleaning component in the cleaning agent of the present invention (i.e., the concentration of the active ingredient) is not particularly limited, and may be appropriately selected depending on the application. The method for cleaning the object to be cleaned using the cleaning agent of the present invention is also not particularly limited, and a conventionally known method such as immersion may be used. The application of the cleaning agent of the present invention is also not particularly limited, but it is preferable to use it for particle cleaning, for example.

[0063] [Various other uses] The solvent composition of the present invention can also be used for purposes other than those mentioned above.For example, the solvent composition of the present invention can be used as a heat transfer medium, a foaming agent, a cover gas, a flash point suppressant, or an insulating medium.In addition, it can also be used as a working fluid, a reaction solvent, a paint solvent, an extractant, a draining agent, a drying agent, and an air spray solvent.

[0064] [Second aspect] In a second aspect of the present invention, a film-forming material and a cleaning agent are provided, which will be described in further detail below.

[0065] [Coating material] The coating film forming material of the present invention contains (3A) a solvent made of a fluoroketone compound represented by the following general formula (1), and (3B) a coating film component. [ka] (In the formula, n is an integer of 1 to 3, and m is an integer of 1 to 3.)

[0066] The component (3A) is the same as the component (A) in the solvent composition of the first embodiment. The component (3B) is the same as the component (1B) in the coating material of the first embodiment. The application of the coating material is also the same as that of the coating material of the first embodiment.

[0067] The coating material of the present invention may contain a non-fluorinated solvent as a solvent component other than component (3A) as necessary. There are no particular limitations on the concentration of the active ingredients or the method of application and curing.

[0068] [Cleaning agent] The cleaning agent of the present invention is a cleaning agent that contains (4A) a solvent made of a fluoroketone compound represented by the following general formula (1) and (4B) a cleaning component. [ka] (In the formula, n is an integer of 1 to 3, and m is an integer of 1 to 3.)

[0069] The component (4A) is the same as the component (A) in the solvent composition of the first embodiment, and the component (4B) is the same as the component (2B) in the cleaning agent of the first embodiment.

[0070] The cleaning agent of the present invention may contain a non-fluorinated solvent as a solvent component other than component (4A) as necessary. There are no particular limitations on the concentration of the active ingredient, the cleaning method, or the application scene.

[0071] Here, the film-forming material of the second embodiment differs from the film-forming material of the first embodiment, which contains as essential components (A) a fluoroketone compound represented by general formula (1) and (B) a fluorine-containing solvent other than component (A), in that it contains only (3A) a fluoroketone compound represented by general formula (1) as a solvent component. In other words, the difference between the film-forming material of the second embodiment and the film-forming material of the first embodiment is that the film-forming material of the second embodiment is not required to contain a fluorine-containing solvent other than the fluoroketone compound represented by general formula (1). The same applies to the cleaning agent of the second embodiment and the cleaning agent of the first embodiment.

[0072] In other words, the fluoroketone compounds represented by general formula (1) can be used as a fluorine-based organic solvent that reduces damage to objects to be cleaned and enhances the dissolving power of various components when used as a cleaning agent, even when used alone as a solvent, and further reduces the environmental impact, making them suitable for use as coating material and cleaning agents. EXAMPLES

[0073] The present invention will be described in more detail below with reference to examples and comparative examples, but the present invention is not limited to these.

[0074] The solvent components used in the following Examples and Comparative Examples are as shown in Table 1. [Table 1]

[0075] <Example 1> Compatibility test of fluoroketone compounds with fluorine-containing solvents The fluoroketone (Noah5112) shown in Table 1 was mixed with various fluorine-containing solvents in a 1:1 ratio to confirm the compatibility at each temperature. The results are shown in Table 2.

[0076] Specifically, 10 g of the fluoroketone shown in Table 1 was added to a glass screw cap at room temperature (28°C), and then 10 g of each of the 11 types of fluorine-containing solvents shown in Table 1 was added and thoroughly stirred. The state immediately after stirring and mixing was visually observed and evaluated according to the following criteria ((1) in Table 2). ◎: Transparent, 1 layer 〇: Cloudy, 1 layer ×: Cloudy, 2 layers

[0077] Next, it was left to stand at room temperature (28°C) for 3 hours, and then its condition was observed in the same manner as above (Table 2 (2)). It was then stored in a refrigerator (11°C) for 1 hour, and its condition was observed in the same manner as above (Table 2 (3)). It was then stored in a freezer (<0°C) for another 1 hour, and its condition was observed in the same manner as above (Table 2 (4)). Finally, it was removed from the freezer, returned to room temperature (28°C), and left to stand for 1 hour, and its condition was observed in the same manner as above (Table 2 (5)).

[0078] [Table 2]

[0079] As shown in Table 2, the specific fluoroketone compound used in the present invention exhibited good compatibility with all fluorine-containing solvents at each temperature. It was found that the solvent composition of the present invention is a fluorine-based solvent composition having excellent dissolution stability between the solvents.

[0080] <Example 2> Compatibility test with fluorinated oil In this example, Fomblin M15 (molecular weight 9700; manufactured by Solvay Specialty Polymers Japan, Ltd.) and Fomblin M60 (molecular weight 18700; manufactured by Solvay Specialty Polymers Japan, Ltd.) were used as the fluorine oil.

[0081] The above fluorine oils (M15, M60) were added in a predetermined amount to each of the fluoroketones (Noah5112) and various fluorine-containing solvents shown in Table 1, and when the fluorine oil did not dissolve, the fluoroketone was added to dissolve it, and the compatibility was confirmed at each temperature. The results are shown in Tables 3-1 and 3-2.

[0082] Specifically, 10 g of each of the fluoroketones and fluorine-containing solvents shown in Table 1 were added to a glass screw cap at room temperature (28°C), and then the amount of fluorine oil (M15, M60) shown in Table 3-1 or Table 3-2 was added and thoroughly stirred. The state immediately after stirring and mixing was visually observed and evaluated according to the following criteria (Table 3-1, Table 3-2 (1)). ◎: Transparent, 1 layer 〇: Cloudy, 1 layer ×: Cloudy, 2 layers

[0083] For fluorine-containing solvents that were rated as "X" in the above visual evaluation (i.e., fluorine-containing solvents that could not dissolve fluorine oil), additional fluoroketone (Noah5112) was added until the above visual evaluation rated as "◎" (for example, in Table 3-1, AE3000 was rated as "X" when 2.0 g of M15 was added, so when 3.0 g of fluoroketone (Noah5112) was added, it was rated as "◯", and when an additional 7 g (10 g in total) was added, it was rated as "◎").

[0084] Next, for each mixture that was rated as "A", it was left to stand for 3 hours at room temperature (28°C) and then observed for its condition in the same manner as above (Table 3-1, Table 3-2 (2)). It was then stored in a refrigerator (11°C) for 1 hour and then observed for its condition in the same manner as above (Table 3-1, Table 3-2 (3)). It was then stored in a freezer (<0°C) for another 1 hour and then observed for its condition in the same manner as above (Table 3-1, Table 3-2 (4)). Finally, it was removed from the freezer, returned to room temperature (28°C), left to stand for 1 hour and then observed for its condition in the same manner as above (Table 3-1, Table 3-2 (5)).

[0085] [Table 3-1]

[0086] [Table 3-2]

[0087] As shown in Tables 3-1 and 3-2, it is understood that fluoroketone (Noah5112) can dissolve fluoro oil under any of the conditions of room temperature, refrigerator, and freezer (evaluated as "◎"). In addition, some fluorine-containing solvents (AE3000, 1233Z, AS300, 365mfc) were unable to dissolve fluoro oil alone (evaluated as "x"), but it is understood that the solubility of fluoro oil can be improved by adding fluoroketone (Noah5112) (evaluated as "◎"). In addition, all of the materials rated as "x" in (4) in each table returned to a dissolved state when returned to room temperature (5). From the above results, it was found that the coating forming materials of the first and second aspects of the present invention can stably dissolve active ingredients.

[0088] <Example 3, Comparative Example 1> Compatibility test with items to be cleaned The compatibility of the fluoroketone (Noah 5112) shown in Table 1 and the hydrochlorofluoroolefin (CELEFIN 1233Z), a fluorine-containing solvent, with the resin (object to be cleaned) was confirmed.

[0089] Specifically, 30 g of each of the above solvents was placed in a glass screw tube, and then resin test pieces with known weights (acrylic, polycarbonate, ABS, polystyrene, and polyurethane) were immersed in the liquid (room temperature, 4 hours). After that, the appearance of each resin test piece was observed and the weight change rate was measured. The results are shown in Table 4.

[0090] [Table 4]

[0091] As shown in Table 4, when fluoroketone (Noah5112) was used, the appearance of the resin test piece did not change even after 4 hours of immersion, and the weight change was small, so it is found that it is suitable as a cleaning agent because it has low attacking power against resin. On the other hand, when hydrochlorofluoroolefin (CELEFIN 1233Z) was used alone, the appearance of the resin test piece changed after 4 hours of immersion, and the weight change rate was also large, so it is found that it has high attacking power against resin. From the above results, it was found that by using a specific fluoroketone as a cleaning agent, as in the first and second aspects of the present invention, it becomes a cleaning agent more suitable for resin (object to be cleaned). Furthermore, low attacking power against resin is also preferable in the case of a material for forming a coating, in that it has little effect on the base material to be coated, and is also advantageous in various respects in other applications.

[0092] <Example 4> Solubility test of cleaning ingredient (trans-1,2-dichloroethylene) To evaluate the solubility stability of cleaning ingredients when using a fluoroketone (Noah5112), a solubility test was conducted on the cleaning ingredient trans-1,2-dichloroethylene (t-DCE).

[0093] Specifically, 10 g of fluoroketone (Noah5112) was placed in a screw cap bottle at room temperature (28°C), and then 2.8%, 7.8%, and 8.9% of t-DCE was added to 100% fluoroketone. The appearance was visually observed and evaluated according to the following criteria. The results are shown in Table 5. ◎ Transparent, single layer

[0094] [Table 5]

[0095] As shown in Table 5, it was confirmed that the fluoroketone (Noah5112) exhibited solubility in the cleaning ingredient trans-1,2-dichloroethylene (t-DCE) at all concentrations. Therefore, it was found that the use of a specific fluoroketone in a cleaning agent, as in the first and second aspects of the present invention, results in a cleaning agent with excellent solubility stability of the cleaning ingredient.

[0096] The present invention is not limited to the above-described embodiment. The above-described embodiment is merely an example, and anything that has substantially the same configuration as the technical idea described in the claims of the present invention and exhibits similar effects is included in the technical scope of the present invention.

Claims

1. 1. A solvent composition comprising: (A) a fluoroketone compound represented by the following general formula (1), and (B) A fluorine-containing solvent other than the component (A). A solvent composition comprising: 【Chemistry 1】 (In the formula, n is an integer from 1 to 3, and m is an integer from 1 to 3.)

2. The solvent composition according to claim 1, wherein the component (A) is at least one selected from the group consisting of perfluoro(2-methyl-3-pentanone), perfluoro(3-methyl-2-butanone), and 2,4-bis(trifluoromethyl)octafluoro-3-pentanone.

3. 2. The solvent composition according to claim 1, wherein the component (B) is at least one selected from the group consisting of hydrofluoroethers, hydrofluoroolefins, hydrochlorofluoroolefins, hydrofluorocarbons, perfluorocarbons, and perfluoropolyethers.

4. The solvent composition according to claim 2, wherein the component (B) is at least one selected from the group consisting of hydrofluoroethers, hydrofluoroolefins, hydrochlorofluoroolefins, hydrofluorocarbons, perfluorocarbons, and perfluoropolyethers.

5. A coating material comprising: (1A) The solvent composition according to any one of claims 1 to 4, and (1B) Coating component A coating material comprising:

6. 6. The film-forming material according to claim 5, wherein the film-forming material is a film-forming lubricant, a lubricant coating agent, or a fluorine coating agent.

7. A cleaning agent comprising: (2A) The solvent composition according to any one of claims 1 to 4, and (2B) Cleansing component A cleaning agent comprising:

8. 8. The cleaning agent according to claim 7, wherein the component (2B) contains a hydrochlorofluoroolefin and / or trans-1,2-dichloroethylene.

9. 5. The solvent composition according to claim 1, which is used as a heat transfer medium, a foaming agent, a cover gas, a flash point depressant, or an insulating medium.

10. A coating material comprising: (3A) a solvent comprising a fluoroketone compound represented by the following general formula (1), and (3B) Coating component A coating material comprising: 【Chemistry 2】 (In the formula, n is an integer from 1 to 3, and m is an integer from 1 to 3.)

11. The coating material according to claim 10, characterized in that the component (3A) is at least one member selected from the group consisting of perfluoro(2-methyl-3-pentanone), perfluoro(3-methyl-2-butanone), and 2,4-bis(trifluoromethyl)octafluoro-3-pentanone.

12. 12. The film-forming material according to claim 10, wherein the film-forming material is a film-forming lubricant, a lubricant coating agent, or a fluorine coating agent.

13. A cleaning agent comprising: (4A) a solvent comprising a fluoroketone compound represented by the following general formula (1), and (4B) Cleansing component A cleaning agent comprising: 【Chemistry 3】 (In the formula, n is an integer from 1 to 3, and m is an integer from 1 to 3.)

14. The cleaning agent according to claim 13, characterized in that the component (4A) is one or more selected from the group consisting of perfluoro(2-methyl-3-pentanone), perfluoro(3-methyl-2-butanone), and 2,4-bis(trifluoromethyl)octafluoro-3-pentanone.

15. The cleaning agent according to claim 13 or 14, characterized in that the component (4B) contains a hydrochlorofluoroolefin and / or trans-1,2-dichloroethylene.

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