阅读说明：本技术 溶剂组合物、气溶胶组合物、清洗剂及物品的清洗方法 (Solvent composition, aerosol composition, cleaning agent, and method for cleaning article ) 是由 佐久冬彦 高田直门 佐藤公纪 于 2021-03-16 设计创作，主要内容包括：本发明提供一种含有新型(类)共沸组合物的溶剂组合物,所述新型(类)共沸组合物含有对环境温和的Z-1-氯-3,3,3-三氟丙烯(HCFO-1233zd(Z))与己烷异构体,即使挥发其组成也不改变。此外,还提供一种含有该溶剂组合物的气溶胶组合物、清洗剂、及使用了该清洗剂的物品的清洗方法。一个实施方式的类共沸组合物含有Z-1-氯-3,3,3-三氟丙烯与选自由3-甲基戊烷、2,3-二甲基丁烷、2,2-二甲基丁烷及甲基环戊烷组成的组中的至少一种。(The present invention provides a solvent composition containing a novel azeotrope-like composition containing environmentally benign Z-1-chloro-3, 3, 3-trifluoropropene (HCFO-1233zd (Z)) and hexane isomers, and the composition does not change even when volatilized. Also disclosed are an aerosol composition containing such a solvent composition, a cleaning agent, and a method for cleaning an article using such a cleaning agent. An azeotrope-like composition of one embodiment comprises Z-1-chloro-3, 3, 3-trifluoropropene and at least one selected from the group consisting of 3-methylpentane, 2, 3-dimethylbutane, 2-dimethylbutane, and methylcyclopentane.)

1. A solvent composition comprising an azeotrope-like composition comprising Z-1-chloro-3, 3, 3-trifluoropropene and at least one selected from the group consisting of 3-methylpentane, 2, 3-dimethylbutane, 2-dimethylbutane, and methylcyclopentane.

2. The solvent composition according to claim 1, wherein the composition comprises 99.9999 to 80.0000 mass% of Z-1-chloro-3, 3, 3-trifluoropropene and 0.0001 to 20.0000 mass% of 3-methylpentane, based on the total amount of Z-1-chloro-3, 3, 3-trifluoropropene and 3-methylpentane.

3. The solvent composition according to claim 1, wherein the amount of Z-1-chloro-3, 3, 3-trifluoropropene and the amount of 2, 3-dimethylbutane are 99.9999 to 75.0000 mass% and 0.0001 to 25.0000 mass% based on the total amount of Z-1-chloro-3, 3, 3-trifluoropropene and 2, 3-dimethylbutane.

4. The solvent composition according to claim 1, wherein the composition comprises 99.9999 to 60.0000 mass% of Z-1-chloro-3, 3, 3-trifluoropropene and 0.0001 to 40.0000 mass% of 2, 2-dimethylbutane, based on the total amount of the Z-1-chloro-3, 3, 3-trifluoropropene and the 2, 2-dimethylbutane.

5. The solvent composition according to claim 1, wherein the amount of Z-1-chloro-3, 3, 3-trifluoropropene added to the total amount of Z-1-chloro-3, 3, 3-trifluoropropene and methylcyclopentane is 99.9999 to 85.0000 mass% and 0.0001 to 15.0000 mass% of methylcyclopentane.

6. The solvent composition of claim 1, further comprising at least one selected from the group consisting of n-hexane, 2-methylpentane and cyclopentane.

7. The solvent composition according to claim 1, further comprising at least one selected from the group consisting of pentane, isopentane, benzene, and sulfur components.

8. The solvent composition according to claim 1, further comprising at least one solvent selected from the group consisting of hydrocarbons, alcohols, ketones, ethers, esters, chlorocarbons, hydrochlorofluorocarbons, hydrofluorocarbons, hydrofluoroethers and hydrofluoroolefins.

9. An aerosol composition comprising the solvent composition of any one of claims 1 to 8 and a propellant gas.

10. A cleaning agent comprising the solvent composition according to any one of claims 1 to 8.

11. A cleaning agent comprising the aerosol composition of claim 9.

12. A method of cleaning an article, comprising: a process of bringing the cleaning agent according to claim 10 into contact with an article to be cleaned to which dirt has adhered.

13. A method of cleaning an article, comprising: a process of bringing the cleaning agent according to claim 11 into contact with an article to be cleaned to which dirt has adhered.

14. A composition for forming a coating film, comprising the solvent composition according to any one of claims 1 to 8 and a nonvolatile component.

15. A composition for forming a coating film, comprising the aerosol composition according to claim 9 and a nonvolatile component.

16. A method for producing an article having a coating film, comprising applying the composition for forming a coating film according to claim 14 to an article, and removing the composition by evaporating the solvent composition.

17. A method for producing an article having a coating film, comprising applying the composition for forming a coating film according to claim 15 to an article, and removing the composition by evaporating the solvent composition.

18. A dehydrating agent comprising the solvent composition according to any one of claims 1 to 8.

19. The dehydrating agent according to claim 18, further comprising an alcohol.

20. A dehydrating agent comprising the aerosol composition of claim 9.

21. The dehydrating agent according to claim 20, further comprising an alcohol.

22. A rinse agent comprising the solvent composition according to any one of claims 1 to 8.

23. A rinse comprising the aerosol composition of claim 9.

24. A lubricant solution comprising the solvent composition according to any one of claims 1 to 8 and a lubricant.

25. A lubricant solution comprising the aerosol composition of claim 9 and a lubricant.

Technical Field

One embodiment of the present invention relates to a solvent composition comprising an azeotrope-like composition comprising Z-1-chloro-3, 3, 3-trifluoropropene and one or more hexane isomers. Further, one embodiment of the present invention relates to an aerosol composition containing the solvent composition, a cleaning agent, a method for cleaning an article using the cleaning agent, a composition for forming a coating film, a method for producing an article with a coating film, a dehydrating agent, a rinsing agent, and a lubricant solution.

Background

Fluorine-containing saturated compounds such as chlorofluorocarbons (CFCs) and Hydrochlorofluorocarbons (HCFCs) are used for blowing agents, heat transfer media, solvents, cleaning agents, and the like. In these applications, it is particularly preferred to use a single component or an azeotrope-like composition, i.e., a component that does not substantially fractionate on boiling or evaporation.

These fluorine-containing saturated compounds have a large Global Warming Potential (GWP), and may affect the global environment, and thus their use is limited. Therefore, Hydrochlorofluoroolefins (HCFO) have been developed as compounds replacing CFCs and HCFCs. HCFO types have a short life in the atmosphere and have excellent environmental properties of low global warming potential.

However, since the formation of (azeotrope-like) compositions is not easily predictable, it is difficult to develop new compositions such as HCFOs which are environmentally safe and do not fractionate. Therefore, there has been a demand in the industry for a novel HCFO composition which is a substitute for CFCs and HCFCs and which is acceptable in terms of performance and safer in terms of environment.

In addition, Z-1-chloro-3, 3, 3-trifluoropropene (hereinafter also referred to as HCFO-1233zd (Z) or 1233zd (Z)) is an environmentally benign compound. For example, patent documents 1 and 2 describe that HCFO-1233zd (Z) and n-hexane, which is one of main components of industrial hexane generally used as a solvent, form an azeotrope-like composition. Patent documents 1 and 3 describe azeotrope-like compositions of HCFO-1233zd (z) and 2-methylpentane, which is one of the main components of industrial hexane generally used as a solvent.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2018-048149

Patent document 2: japanese patent laid-open publication No. 2018-021199

Patent document 3: japanese patent laid-open publication No. 2017-071777

Disclosure of Invention

Technical problem to be solved by the invention

As noted above, it is difficult to predict the formation of an azeotrope and other isomers of hexane exist, but no study has been made to date on other hexane isomers that exhibit azeotropy or azeotrope-like behavior with HCFO-1233zd (z). In addition, the combination of HCFO-1233zd (Z) with more than 2 hexane isomers has not been investigated.

One of the technical problems of the present invention is to provide a solvent composition containing a novel (azeotrope-like) composition containing Z-1-chloro-3, 3, 3-trifluoropropene (HCFO-1233zd (Z)) and hexane isomer, which is environmentally friendly, and whose composition does not change even if volatilized. One embodiment of the present invention will address as one of the technical problems an aerosol composition comprising the solvent composition. Further, one embodiment of the present invention will address as one of the technical problems a cleaning agent containing the solvent composition or the aerosol composition. Further, one embodiment of the present invention is to provide a method for cleaning an article using the cleaning agent, as one of the technical problems. In addition, one embodiment of the present invention has been made to solve one of the problems of the conventional coating film forming composition containing the solvent composition or the aerosol composition. Further, one embodiment of the present invention is to provide a method for producing an article with a coating film, which uses the composition for forming a coating film. Further, one embodiment of the present invention will address, as one of technical problems, a dehydrating agent containing the solvent composition or the aerosol composition. Furthermore, one embodiment of the present invention will address as one of the technical problems a rinse agent containing the solvent composition or the aerosol composition. Further, one embodiment of the present invention will address as one of the technical problems a lubricant solution containing the solvent composition or the aerosol composition.

Means for solving the problems

According to one embodiment of the present invention, there is provided a solvent composition comprising an azeotrope-like composition comprising Z-1-chloro-3, 3, 3-trifluoropropene and at least one selected from the group consisting of 3-methylpentane, 2, 3-dimethylbutane, 2-dimethylbutane and methylcyclopentane.

The solvent composition may contain 99.9999 to 80.0000 mass% of Z-1-chloro-3, 3, 3-trifluoropropene and 0.0001 to 20.0000 mass% of 3-methylpentane, based on the total amount of Z-1-chloro-3, 3, 3-trifluoropropene and 3-methylpentane.

The solvent composition may contain 99.9999 to 75.0000 mass% of Z-1-chloro-3, 3, 3-trifluoropropene and 0.0001 to 25.0000 mass% of 2, 3-dimethylbutane, based on the total amount of Z-1-chloro-3, 3, 3-trifluoropropene and 2, 3-dimethylbutane.

The solvent composition may contain 99.9999 to 60.0000 mass% of Z-1-chloro-3, 3, 3-trifluoropropene and 0.0001 to 40.0000 mass% of 2, 2-dimethylbutane, based on the total amount of Z-1-chloro-3, 3, 3-trifluoropropene and 2, 2-dimethylbutane.

The solvent composition may contain 99.9999 to 85.0000 mass% of Z-1-chloro-3, 3, 3-trifluoropropene and 0.0001 to 15.0000 mass% of methylcyclopentane, based on the total amount of Z-1-chloro-3, 3, 3-trifluoropropene and methylcyclopentane.

The solvent composition may further contain at least one selected from the group consisting of n-hexane, 2-methylpentane and cyclopentane.

The solvent composition may further contain at least one selected from the group consisting of pentane, isopentane, benzene, and sulfur components.

The solvent composition may further contain at least one solvent selected from the group consisting of hydrocarbons, alcohols, ketones, ethers, esters, chlorocarbons, hydrochlorofluorocarbons, hydrofluorocarbons, hydrofluoroethers, and hydrofluoroolefins.

According to one embodiment of the present invention, there is provided an aerosol composition comprising any one of the above-described solvent compositions and a propellant gas.

According to an embodiment of the present invention, there is provided a cleaning agent containing any one of the above-described solvent compositions or aerosol compositions.

According to an embodiment of the present invention, there may be provided a method of cleaning an article, the method including: and a step of bringing the cleaning agent into contact with the article to be cleaned to which the dirt has adhered.

According to an embodiment of the present invention, there is provided a composition for forming a coating film, which contains any of the above-described solvent compositions or aerosol compositions and a nonvolatile component.

According to an embodiment of the present invention, there is provided a method for producing an article having a coating film, comprising applying the above-mentioned composition for forming a coating film to an article, and removing the composition by evaporating the solvent composition.

According to an embodiment of the present invention, there is provided a dehydrating agent containing any one of the above-described solvent compositions.

The dehydrating agent may further contain an alcohol.

According to an embodiment of the present invention, there can be provided a dehydrating agent containing the above aerosol composition.

The dehydrating agent may further contain an alcohol.

According to an embodiment of the present invention, there can be provided a rinse agent containing any one of the above-described solvent compositions.

According to an embodiment of the present invention, there may be provided a rinse agent containing the above aerosol composition.

According to an embodiment of the present invention, there is provided a lubricant solution containing any one of the above-described solvent compositions and a lubricant.

According to one embodiment of the present invention, there is provided a lubricant solution comprising the aerosol composition described above and a lubricant.

Effects of the invention

According to the present invention, there can be provided a solvent composition containing a novel azeotrope-like composition containing Z-1-chloro-3, 3, 3-trifluoropropene and a hexane isomer without changing its composition even when volatilized. The solvent composition of the present invention imposes little burden on the environment, and even when used under open conditions, the (azeotrope-like) composition as a main component is easy to maintain the performance as a liquid whose composition is not easily changed. Further, according to the present invention, there can be provided an aerosol composition containing the solvent composition. Further, according to the present invention, there can be provided a cleaning agent containing the solvent composition or the aerosol composition. Further, according to the present invention, there can be provided a method for cleaning an article using the cleaning agent. Further, according to the present invention, there can be provided a composition for forming a coating film containing the solvent composition or the aerosol composition. Further, the present invention provides a method for producing a coated article using the coating film-forming composition. Further, according to the present invention, there can be provided a dehydrating agent containing the solvent composition or the aerosol composition. Further, according to the present invention, there may be provided a rinse containing the solvent composition or the aerosol composition. Further, according to the present invention, there may be provided a lubricant solution containing the solvent composition or the aerosol composition.

Drawings

Fig. 1 is a gas-liquid equilibrium curve of a solvent composition according to an embodiment of the present invention.

Fig. 2 is a gas-liquid equilibrium curve of a solvent composition according to an embodiment of the present invention.

Fig. 3 is a gas-liquid equilibrium curve of a solvent composition according to an embodiment of the present invention.

Fig. 4 is a gas-liquid equilibrium curve of a solvent composition according to an embodiment of the present invention.

Detailed Description

The solvent composition, aerosol composition, cleaning agent, method for cleaning an article, composition for forming a coating film, method for producing an article with a coating film, dehydrating agent, rinsing agent, and lubricant solution according to the embodiments of the present invention will be described below. However, the solvent composition, the aerosol composition, the cleaning agent, the method for cleaning an article, the composition for forming a coating film, the method for producing an article with a coating film, the dehydrating agent, the rinsing agent, and the lubricant solution according to the embodiments of the present invention should not be construed as being limited to the description of the embodiments and examples shown below.

[ (azeotrope-like) compositions ]

The fluoroolefin has high compatibility with various solvents, and therefore, a uniform composition can be easily prepared. However, in the case of such a simple composition, there is an inherent problem that "the liquid composition is liable to vary". That is, even if a plurality of types of liquids are mixed to ensure compatibility, the problem that the liquid composition is likely to vary due to the difference in the volatility of each component cannot be avoided. For example, when a two-component liquid composition is put into an ultrasonic cleaning machine and used as a cleaning agent, generally, a low boiling point component having a high volatility (a component having a large vapor pressure) preferentially volatilizes, and a high boiling point component having a low volatility is concentrated in a cleaning tank. For example, in the case of a composition in which a high boiling point component having a low detergency is mixed with a low boiling point component having a high detergency, the concentration of the low boiling point component in the cleaning liquid may decrease with time, thereby causing poor cleaning. In particular, when a nonflammable composition is prepared by mixing a nonflammable solvent with a flammable solvent, if the nonflammable component is preferentially volatilized, the cleaning liquid may become a flammable composition.

In addition, it is preferable from the viewpoint of environmental protection and economic aspects to recover and reuse the cleaning solvent by an operation such as distillation, but in the case of a two-component liquid, it is generally necessary to recover two components of liquids having different boiling points, and the recovery and reuse are liable to impose an operational burden.

Therefore, when a binary system (multi-component system) liquid composition is used as a cleaning agent or a solvent, it is necessary to frequently analyze the liquid composition, constantly blend the liquid composition into an appropriate ratio, and replenish the volatile components so that the liquid composition falls within an appropriate composition range. However, such liquid composition management may cause a large burden in operation.

In contrast, in the case of an azeotropic composition, since the composition volatilizes at the same level as the liquid composition, the liquid composition does not change during use, and therefore, the composition is very preferable. In the present specification, "azeotropic" refers to an azeotropic property in a thermodynamic strict sense. For example, in the case of a water/ethanol mixture, a composition of ethanol (96 mass%) and water (4 mass%) is an azeotropic mixture (azeotrope), and vapor present in a gas-liquid equilibrium therewith is also "ethanol (96 mass%): water (4 mass%) ", which is identical to the liquid composition. This phenomenon is referred to as "azeotropy". The composition of the azeotrope is only 1 point at a given temperature and pressure.

"azeotrope-like" is also referred to as "pseudo-azeotropic" and refers to a phenomenon in which, although not thermodynamically strictly azeotropic, the liquid composition is sometimes substantially equal to the composition of a gas at equilibrium for a certain range of compositions of the liquid. Even if the compositions of the gas phase portion and the liquid phase portion are not completely identical, those skilled in the art can regard them as identical to the azeotropic composition as long as the compositions of the gas phase portion and the liquid phase portion are substantially identical. In this case, the smaller the difference in gas-liquid equilibrium composition between the gas phase portion and the liquid phase portion, the better. In this way, a phenomenon in which the vapor-liquid equilibrium compositions of the vapor phase portion and the liquid phase portion substantially match is referred to as an azeotrope-like composition or a pseudo-azeotrope-like composition, and the composition thereof is referred to as an azeotrope-like composition or a pseudo-azeotrope composition.

Although it is technically necessary to distinguish the azeotropic phenomenon from the pseudo-azeotropic phenomenon (or pseudo-azeotropic phenomenon), in the practice of cleaning and the like, the azeotropic phenomenon and the pseudo-azeotropic phenomenon (or pseudo-azeotropic) are not necessarily distinguished from each other and can be regarded as completely the same, and therefore, in the present specification, the azeotropic phenomenon and the pseudo-azeotropic phenomenon (or pseudo-azeotropic) are collectively referred to as "azeotrope-like". The composition at this time is referred to as "azeotrope-like composition". In the (azeotrope-like) case, whether or not the azeotropic point is present is not considered. So long as the gas-liquid equilibrium composition of the gas phase portion and the liquid phase portion is substantially the same.

The "azeotrope-like" is not theoretically deduced, but is found when the gas-liquid equilibrium is experimentally investigated for the kinds and composition ratios of various liquids, and the composition of the gas phase and the composition of the liquid phase are occasionally substantially coincident with each other. The inventors of the present application found an azeotrope-like composition of substantially the same azeotropic point and/or gas-liquid composition of Z-1-chloro-3, 3, 3-trifluoropropene and at least one azeotropic composition selected from the group consisting of 3-methylpentane, 2, 3-dimethylbutane, 2-dimethylbutane and methylcyclopentane as hexane isomers.

[ Z-1-chloro-3, 3, 3-trifluoropropene ]

Z-1-chloro-3, 3, 3-trifluoropropene is a non-flammable solvent that has neither a fire point nor a flammability range based on the explosion limit standard test method ASTM E681. In addition, 1233zd (z) has an ozone layer depletion potential ODP of substantially zero, a global warming potential GWP of < 1, and has chemical properties excellent in environmental properties. Therefore, 1233zd (z) does not belong to the components specifically defined in the ozone layer protection law, the global warming countermeasure propulsion law, the freon emission suppression law, the fire protection law, the high pressure gas security law, and the like, and therefore can be used in a wide range of applications.

[ solvent composition ]

The solvent composition comprises an azeotrope-like composition of 1233zd (Z) and at least one selected from the group consisting of 3-methylpentane, 2, 3-dimethylbutane, 2-dimethylbutane and methylcyclopentane. In one embodiment, the present solvent composition may contain 99.9999 to 80.0000 mass% of 1233zd (z) and 0.0001 to 20.0000 mass% of 3-methylpentane, relative to the total amount of 1233zd (z) and 3-methylpentane. Among these, the composition containing 1233zd (z) in an amount of 99.9999 to 90.0000 mass% and 3-methylpentane in an amount of 0.0001 to 10.0000 mass% is preferable because the variation in liquid composition is smaller.

In one embodiment, the present solvent composition may contain 99.9999 to 75.0000 mass% of 1233zd (z) and 0.0001 to 25.0000 mass% of 2, 3-dimethylbutane, relative to the total amount of 1233zd (z) and 2, 3-dimethylbutane. Among these, the composition containing 1233zd (z) in an amount of 99.9999 to 85.0000 mass% and 2,3 dimethylbutane in an amount of 0.0001 to 15.0000 mass% is preferable because the variation in liquid composition is smaller.

In one embodiment, the solvent composition may contain 99.9999 to 60.0000 mass% of Z-1-chloro-3, 3, 3-trifluoropropene and 0.0001 to 40.0000 mass% of 2, 2-dimethylbutane, relative to the total amount of Z-1-chloro-3, 3, 3-trifluoropropene and 2, 2-dimethylbutane. Among these, the composition containing 1233zd (z) in an amount of 99.9999 to 65.0000 mass% and 2, 2-dimethylbutane in an amount of 0.0001 to 35.0000 mass% is preferable because the variation in liquid composition is smaller.

In one embodiment, the present solvent composition may contain 99.9999 to 85.0000 mass% of Z-1-chloro-3, 3, 3-trifluoropropene and 0.0001 to 15.0000 mass% of methylcyclopentane, relative to the total amount of Z-1-chloro-3, 3, 3-trifluoropropene and methylcyclopentane. Among these, the composition containing 1233zd (z) in an amount of 99.9999 to 90.0000 mass% and methylcyclopentane in an amount of 0.0001 to 10.0000 mass% is preferable because the variation in liquid composition is smaller.

In one embodiment, the present solvent composition may further contain at least one selected from the group consisting of n-hexane, 2-methylpentane and cyclopentane in an azeotrope-like composition consisting of 1233zd (z) and at least one selected from the group consisting of 3-methylpentane, 2, 3-dimethylbutane, 2-dimethylbutane and methylcyclopentane. In addition, in one embodiment, the present solvent composition may contain 1233zd (z) along with at least two or at least three selected from the group consisting of 3-methylpentane, 2, 3-dimethylbutane, 2-dimethylbutane, methylcyclopentane, 2-methylpentane, and n-hexane. In one embodiment, the solvent composition may contain 1233zd (z) and a mixture of 3-methylpentane, 2, 3-dimethylbutane, 2-dimethylbutane, methylcyclopentane, 2-methylpentane and n-hexane.

As is apparent from the gas-liquid equilibrium measurement shown in the examples described below, the solvent composition comprising 1233zd (z) and at least one selected from the group consisting of 3-methylpentane, 2, 3-dimethylbutane, 2-dimethylbutane, and methylcyclopentane, or the solvent composition comprising 1233zd (z) and commercial hexane is: an azeotrope-like composition having a composition substantially the same in the gas phase and the liquid phase in a predetermined composition.

The present solvent composition can be prepared by a step of mixing 1233zd (z) and at least one selected from the group consisting of 3-methylpentane, 2, 3-dimethylbutane, 2-dimethylbutane and methylcyclopentane. An azeotrope-like composition having a high purity and containing substantially no impurities is one of preferred embodiments of the azeotrope-like composition. However, depending on the application, it is sometimes not required to be a liquid composition of such a high purity. In this case, a liquid composition in which a small amount of raw material or by-product for the synthesis of 1233zd (z) remains may be used. For example, an azeotrope-like composition in which the total amount of the raw material or by-products is less than 10 mass%, preferably less than 5 mass%, particularly preferably less than 3 mass%, and still more preferably less than 1 mass% may be used.

In one embodiment, the present solvent composition may further comprise at least one selected from the group consisting of pentane, isopentane, benzene, and sulfur components. These components are sometimes contained in commercial hexane, and generally the present solvent composition may contain these components within the range contained in commercial hexane. More specifically, the solvent composition may contain at least one selected from the group consisting of 3-methylpentane, 2, 3-dimethylbutane, 2-dimethylbutane and methylcyclopentane in the proportion contained in industrial hexane. Thus, the present solvent composition may contain an azeotrope-like composition of 1233zd (z) and industrial hexane. The sulfur content is, for example, a sulfur-containing component of naphtha (a hydrocarbon stream having a boiling range of about 50 to about 220 ℃ C. which is observed in oil production operations), and specific examples thereof include mercaptan, thiophene, methylthiophene, tetrahydrothiophene (THT), ethylthiophene, propylthiophene, butylthiophene, thiophenol, methylthiophenol, benzothiophene, methylbenzothiophene, and alkylbenzothiophene. These sulfur components may be used alone or as a mixture of two or more.

On the other hand, when it is required that the present solvent composition is formed of an azeotrope-like composition having a high purity, it is preferable to prepare the azeotrope-like composition by separately distilling 1233zd (z) and at least one selected from the group consisting of 3-methylpentane, 2, 3-dimethylbutane, 2-dimethylbutane and methylcyclopentane to remove impurities derived from the raw materials before mixing them, and mixing the two components after improving the purity.

In one embodiment, the present solvent composition may further contain at least one solvent selected from the group consisting of hydrocarbons, alcohols, ketones, ethers, esters, chlorocarbons, hydrochlorofluorocarbons, hydrofluorocarbons, hydrofluoroethers, and hydrofluoroolefins.

Examples of the hydrocarbons include 2-methylbutane, n-heptane, 2-methylhexane, 3-methylhexane, 2, 4-dimethylpentane, n-octane, 2-methylheptane, 3-methylheptane, 4-methylheptane, 2-dimethylhexane, 2, 5-dimethylhexane, 3, 3-dimethylhexane, 2-methyl-3-ethylpentane, 3-methyl-3-ethylpentane, 2,3, 3-trimethylpentane, 2,3, 4-trimethylpentane, 2, 3-trimethylpentane, 2-methylheptane, 2, 4-trimethylpentane, n-nonane, 2, 5-trimethylhexane, n-decane, n-dodecane, 2-methyl-2-butene, 2-methylheptane, 3-dimethylhexane, 3-dimethylpentane, 2-methyl-3-trimethylpentane, 2-methylpentane, 4-trimethylpentane, n-nonane, 2, 5-trimethylhexane, n-decane, n-dodecane, 2-methyl-2-butene, 2-dimethylhexane, and the like, 1-pentene, 2-pentene, 1-hexene, 1-octene, 1-nonene, 1-decene, cyclohexane, methylcyclohexane, ethylcyclohexane, bicyclohexane, cyclohexene, α -pinene, dipentene, decalin, tetralin, pentanaphthalene, and the like. These hydrocarbons may be used alone, or two or more compounds may be used simultaneously.

Examples of the alcohols include methanol, ethanol, n-propanol, isopropanol, n-butanol, sec-butanol, isobutanol, tert-butanol, 1-pentanol, 2-pentanol, 1-ethyl-1-propanol, 2-methyl-1-butanol, 3-methyl-2-butanol, neopentyl alcohol, 1-hexanol, 2-methyl-1-pentanol, 4-methyl-2-pentanol, 2-ethyl-1-butanol, 1-heptanol, 2-heptanol, 3-heptanol, 1-octanol, 2-ethyl-1-hexanol, 1-nonanol, 3,5, 5-trimethyl-1-hexanol, isopropyl alcohol, n-butanol, n, 1-decanol, 1-undecanol, 1-dodecanol, allyl alcohol, propargyl alcohol, benzyl alcohol, cyclohexanol, 1-methylcyclohexanol, 2-methylcyclohexanol, 3-methylcyclohexanol, 4-methylcyclohexanol, α -terpineol, 2, 6-dimethyl-4-heptanol, nonanol, tetradecanol, and the like. These alcohols may be used alone or in combination of two or more.

Examples of the ketones include acetone, methyl ethyl ketone, 2-pentanone, 3-pentanone, 2-hexanone, methyl isobutyl ketone, 2-heptanone, 3-heptanone, 4-heptanone, diisobutyl ketone, mesityl oxide, phorone, 2-octanone, cyclohexanone, methylcyclohexanone, isophorone, 2, 4-pentanedione, 2, 5-hexanedione, diacetone alcohol, and acetophenone. These ketones may be used alone, or two or more compounds may be used simultaneously.

Examples of the ethers include diethylene glycol monobutyl ether.

Examples of the esters include methyl formate, ethyl formate, propyl formate, butyl formate, isobutyl formate, pentyl formate, methyl acetate, ethyl acetate, propyl acetate, isopropyl acetate, butyl acetate, isobutyl acetate, sec-butyl acetate, pentyl acetate, methoxybutyl acetate, sec-hexyl acetate, 2-ethylbutyl acetate, 2-ethylhexyl acetate, cyclohexyl acetate, benzyl acetate, methyl propionate, ethyl propionate, butyl propionate, methyl butyrate, ethyl butyrate, butyl butyrate, isobutyl isobutyrate, ethyl 2-hydroxy-2-methylpropionate, methyl benzoate, ethyl benzoate, propyl benzoate, butyl benzoate, benzyl benzoate, γ -butyrolactone, diethyl oxalate, dibutyl oxalate, diamyl oxalate, diethyl malonate, dimethyl maleate, methyl acetate, ethyl acetate, hexyl acetate, cyclohexyl acetate, hexyl acetate, methyl propionate, hexyl acetate, butyl propionate, butyl butyrate, butyl isobutyrate, ethyl 2-hydroxy-2-methylpropionate, methyl benzoate, ethyl benzoate, propyl benzoate, butyl benzoate, benzyl benzoate, γ -butyrolactone, diethyl oxalate, dibutyl oxalate, diamyl oxalate, diethyl malonate, dimethyl maleate, and the like, Diethyl maleate, dibutyl tartrate, tributyl citrate, dibutyl sebacate, dimethyl phthalate, diethyl phthalate, dibutyl phthalate, and the like. These esters may be used alone, or two or more compounds may be used simultaneously.

Examples of the chlorocarbons include dichloromethane, 1, 1-dichloroethane, 1, 2-dichloroethane, 1,1, 2-trichloroethane, 1,1,1, 2-tetrachloroethane, 1,1,2, 2-tetrachloroethane, pentachloroethane, 1, 1-dichloroethylene, (Z) -1, 2-dichloroethylene, (E) -1, 2-dichloroethylene, trichloroethylene, and tetrachloroethylene. These chlorocarbons may be used alone or in combination of two or more.

Examples of the hydrochlorofluorocarbons (hereinafter also referred to as HCFCs) include dichloromonofluoroethane, dichlorodifluoroethane, dichlorotrifluoroethane, monochloromonofluoropropane, monochlorodifluoropropane, monochlorotrifluoropropane, dichloromonofluoropropane, dichlorodifluoropropane, dichlorotrifluoropropane, dichlorotetrafluoropropane, dichloropentafluoropropane, trichloropentafluoropropane, trichlorodifluoropropane, trichlorotrifluoropropane, and the like. These hydrochlorofluorocarbons may be used alone or in combination of two or more.

Examples of the hydrofluorocarbons (hereinafter also referred to as "HFCs") include 1,1,1,3, 3-pentafluorobutane, 1,1,1,2,2,3,4,5,5, 5-decafluoropentane, 1,1,2,2,3,3, 4-heptafluorocyclopentane, 1,1,1,2,2,3,3,4, 4-nonafluorohexane, 1,1,2,2,3,3,4,4,5,5,6, 6-tridecafluorohexane and 1,1,1,2,2,3,3,4,4,5,5,6, 6-tridecafluorooctane. These hydrofluorocarbons may be used alone or in combination of two or more.

Examples of the hydrofluoroethers (hereinafter also referred to as HFEs) include (perfluorobutoxy) methane, (perfluorobutoxy) ethane, 1,1,2, 2-tetrafluoro-1- (2,2, 2-trifluoroethoxy) ethane, heptafluoropropylmethyl ether, nonafluorobutyl methyl ether, nonafluorobutyl ethyl ether, 1,1,1,2,2,3,4,5,5, 5-decafluoro-3-methoxy-4- (trifluoromethyl) -pentane, 1,1,2, 2-tetrafluoroethyl-2, 2, 2-trifluoroethyl ether (HFE-347pc-f), 1,1,1,3,3, 3-hexafluoro-2-methoxypropane (HFE 356-356 mmz), and the like. These hydrofluoroethers may be used alone or in combination of two or more.

Examples of the hydrofluoroolefins include hydrochlorofluoroolefins and hydrofluoroolefins other than Z-1-chloro-3, 3, 3-trifluoropropene. Examples thereof include E-1-chloro-3, 3, 3-trifluoropropene (HCFO-1233zd (E)), Z-1-chloro-2, 3, 3-trifluoro-1-propene (HCFO-1233yd (Z)), E-1-chloro-2, 3, 3-trifluoro-1-propene (HCFO-1233yd (E)), Z-1, 2-dichloro-3, 3, 3-trifluoropropene (HCFO-1223xd (Z)), E-1, 2-dichloro-3, 3, 3-trifluoropropene (HCFO-1223xd (E)), 1-dichloro-3, 3, 3-trifluoropropene (HCFO-1223za), 1, 2-trichloro-3, 3, 3-trifluoropropene (HCFO-1213xa), Z-1,1,1,4,4, 4-hexafluoro-2-butene (HFO-1336mzz (Z)), E-1-chloro-2, 3,3,4,4,5, 5-heptafluoro-1-pentene (HCFO-1437dycc (E)), Z-1-chloro-2, 3,3,4,4,5, 5-heptafluoro-1-pentene (HCFO-1437dycc (Z)), Z-1,1,1,2,4,4,5,5, 5-nonafluoro-2-pentene (HFO-1429myz (Z)), E-1,1,1,2,4,4,5,5, 5-nonafluoro-2-pentene (HFO-1429myz E), Z-1,1,1,3,4,4,5,5, 5-nonafluoro-2-pentene (HFO-1429mzy (Z)), E-1,1,1,3,4,4,5,5, 5-nonafluoro-2-pentene (HFO-1429mzy (E)), Z-1-chloro-2, 3,3, 3-tetrafluoropropene (HCFO-1224yd (Z)), E-1-chloro-2, 3,3, 3-tetrafluoropropene (HCFO-1224yd (E)), z-2-chloro-1, 3,3, 3-tetrafluoropropene (HCFO-1224xe (Z)), E-2-chloro-1, 3,3, 3-tetrafluoropropene (HCFO-1224xe (E)), 2-chloro-3, 3, 3-trifluoropropene (HCFO-1233xf), methoxy perfluoroheptene, and the like. These hydrofluoroolefins may be used alone or in combination of two or more.

In one embodiment, the present solvent composition may contain one or more selected from the above-mentioned solvents. The solvent composition may contain the solvent in an amount of 50 mass% or less, 45 mass% or less, 40 mass% or less, 35 mass% or less, 30 mass% or less, 25 mass% or less, 20 mass% or less, 15 mass% or less, 10 mass% or less, 5 mass% or less, and 1 mass% or less, based on the total amount of the azeotrope-like composition.

In one embodiment, the present solvent composition may further comprise at least one additional component. Examples of the additional component include a stabilizer, a surfactant, a flame retardant, a metal deactivator, and a rust preventive.

The stabilizer is not particularly limited, but is more preferably a stabilizer which is distilled off together by a distillation operation or a stabilizer which forms an azeotrope-like mixture. Specific examples of the stabilizer include nitro compounds, epoxy compounds, phenols, imidazoles, amines, alcohols, unsaturated hydrocarbons, and the like, in addition to the above additives. These stabilizers may be used alone or in combination of two or more.

As the nitro compound, known compounds can be used, and aliphatic and/or aromatic derivatives and the like can be mentioned. Examples of the aliphatic nitro compound include nitromethane, nitroethane, 1-nitropropane, and 2-nitropropane. Examples of the aromatic nitro compound include nitrobenzene, o-dinitrobenzene, m-dinitrobenzene, p-dinitrobenzene, trinitrobenzene, o-nitrotoluene, m-nitrotoluene, p-nitrotoluene, o-ethylnitrobenzene, m-ethylnitrobenzene, p-ethylnitrobenzene, 2, 3-dimethylnitrobenzene, 2, 4-dimethylnitrobenzene, 2, 5-dimethylnitrobenzene, 2, 6-dimethylnitrobenzene, 3, 4-dimethylnitrobenzene, 3, 5-dimethylnitrobenzene, o-nitroacetophenone, m-nitroacetophenone, p-nitroacetophenone, o-nitrophenol, m-nitrophenol, p-nitrophenol, o-nitroanisole, m-nitroanisole, p-nitroanisole, and the like.

Examples of the epoxy compound include monoepoxy compounds such as ethylene oxide, 1, 2-butylene oxide, propylene oxide, styrene oxide, cyclohexene oxide, glycidol, epichlorohydrin, glycidyl methacrylate, phenyl glycidyl ether, allyl glycidyl ether, methyl glycidyl ether, butyl glycidyl ether, and 2-ethylhexyl glycidyl ether, and polyepoxide compounds such as diepoxybutane, vinylcyclohexene dioxide, neopentyl glycol diglycidyl ether, ethylene glycol diglycidyl ether, glycerol polyglycidyl ether, and trimethylolpropane triglycidyl ether.

The phenols include phenols having various substituents such as an alkyl group, an alkenyl group, an alkoxy group, a carboxyl group, a carbonyl group, and a halogen in addition to a hydroxyl group. Examples thereof include monophenols such as 2, 6-di-t-butyl-p-cresol, o-cresol, m-cresol, p-cresol, thymol, p-t-butylphenol, o-methoxyphenol, m-methoxyphenol, p-methoxyphenol, eugenol, isoeugenol, butyl hydroxyanisole, phenol, xylenol and the like, and diphenols such as t-butylcatechol, 2, 5-di-t-amylhydroquinone, 2, 5-di-t-butylhydroquinone and the like.

Examples of the imidazoles include 1-methylimidazole, 1-N-butylimidazole, 1-phenylimidazole, 1-benzylimidazole, 1- (. beta. -hydroxyethyl) imidazole (1- (. beta. -oxythienyl) imidazole), 1-methyl-2-propylimidazole, 1-methyl-2-isobutylimidazole, 1-N-butyl-2-methylimidazole, 1, 2-dimethylimidazole, 1, 4-dimethylimidazole, 1, 5-dimethylimidazole, 1,2, 5-trimethylimidazole, 1,4, 5-trimethylimidazole, 1-ethyl-2-methylimidazole, and the like, in which an alkyl group, a cycloalkyl group, or an aryl group having 1 to 18 carbon atoms is used as an N-position substituent. These compounds may be used alone, or two or more compounds may be used simultaneously.

Examples of the amines include pentylamine, hexylamine, diisopropylamine, diisobutylamine, di-N-propylamine, diallylamine, triethylamine, N-methylaniline, pyridine, morpholine, N-methylmorpholine, triallylamine, allylamine, α -methylbenzylamine, methylamine, dimethylamine, trimethylamine, ethylamine, diethylamine, propylamine, isopropylamine, dipropylamine, butylamine, isobutylamine, dibutylamine, tributylamine, dipentylamine, tripentylamine, 2-ethylhexylamine, aniline, N-dimethylaniline, N-diethylaniline, ethylenediamine, propylenediamine, diethylenetriamine, tetraethylenepentamine, benzylamine, dibenzylamine, diphenylamine, and diethylhydroxylamine. These amines may be used alone or in combination of two or more.

Examples of the alcohols include 1-butanol, 2-butanol, and 2-methyl-2-propanol. These alcohols may be used alone or in combination of two or more.

Examples of the unsaturated hydrocarbons include α -methylstyrene, 1-methyl-4- (1-methylvinyl) benzene, isoprenes, allenes, and terpenes. These unsaturated hydrocarbons may be used alone, or two or more compounds may be used simultaneously.

Specific examples of the surfactant include nonionic surfactants, cationic surfactants, and anionic surfactants. These detergency enhancers may be used alone or in combination of two or more. For the purpose of synergistically improving the detergency and surface action, a cationic surfactant or an anionic surfactant may be added to the present azeotrope-like composition in addition to the nonionic surfactant. Examples of the nonionic surfactant include sorbitan aliphatic esters such as sorbitan monooleate and sorbitan trioleate; polyoxyethylene sorbitol fatty acid esters such as polyoxyethylene sorbitol tetraoleate; polyethylene glycol fatty acid esters such as polyoxyethylene monolaurate; polyoxyethylene alkyl ethers such as polyoxyethylene lauryl ether; polyoxyethylene alkyl phenylethers such as polyoxyethylene nonyl phenyl ether; polyoxyethylene alkylamine fatty acid amides such as polyoxyethylene oleamide and the like.

Examples of the flame retardant include, but are not limited to, phosphoric acid esters, halogenated aromatic compounds, fluoroiodocarbon compounds (ヨードカーボン, フッ -formed), and bromofluorocarbons (ブロモカーボン, フッ -formed).

The solvent composition may contain the additional component such that the total amount of the additional component is 0.001 to 30% by mass relative to the solvent composition. For example, 30 mass% or less, 10 mass% or less, 5 mass% or less, and 3 mass% or less are added to 100 mass% of the present solvent composition, and 0.001 mass% or more, 0.01 mass% or more, 0.1 mass% or more, and 1 mass% or more are added to 100 mass% of the present solvent composition. In some embodiments, the amount of the additional component added may be in the following range with respect to 100% by mass of the present solvent composition: may be 0.001 to 30 mass%, 0.001 to 10 mass%, 0.001 to 5 mass%, 0.001 to 3 mass%, 0.001 to 1 mass%, 0.001 to 0.01 mass%, 0.001 to 0.1 mass%, 0.01 to 30 mass%, 0.01 to 10 mass%, 0.01 to 5 mass%, 0.01 to 3 mass%, 0.01 to 1 mass%, 0.01 to 0.1 mass%, 0.1 to 30 mass%, 0.1 to 10 mass%, 0.1 to 5 mass%, 0.1 to 3 mass%, 0.1 to 1 mass%, 1 to 30 mass%, 1 to 10 mass%, 0.1 to 5 mass%, 0.1 to 3 mass%, 0.1 to 1 mass%, 1 to 30 mass%, 1 to 10 mass%, or more than 0.1 to 5 mass%, or more than 0.1 to 3 mass%, or more than 1 to 1 mass%, or less than 1 mass%, or not less than 30 mass%, or not less than 1 to 10 mass%, or not less than 1 mass%, or, 1 to 5 mass%, 1 to 3 mass%, 3 to 30 mass%, 3 to 10 mass%, 3 to 5 mass%, 5 to 30 mass%, 5 to 10 mass%, 10 to 10 mass%, or more than 5 mass%.

As an example of the present solvent composition, the following composition can be cited, but is not limited thereto. The solvent composition may contain a stabilizer (for example, a nitro compound, an epoxy compound, phenols, imidazoles, amines, alcohols, a nitro compound and an epoxy compound, a nitro compound and phenols, a nitro compound and amines, or phenols and amines) in an amount of 10 mass% or less based on 100 mass% of the solvent composition; a composition containing 10% by mass or less of a stabilizer and 1% by mass or less of a surfactant; a composition containing 10% by mass or less of a stabilizer, 1% by mass or less of a surfactant, and 5% by mass or less of a rust preventive; a composition containing 10% by mass or less of a stabilizer and 5% by mass or less of a flame retardant; a composition containing 5% by mass or less of a surfactant; a composition containing 5% by mass or less of a surfactant and 5% by mass or less of a rust inhibitor; a composition containing 5% by mass or less of a rust inhibitor; a composition containing 5% by mass or less of a metal deactivator.

In one embodiment, the present solvent composition may be mixed with a propellant gas to form an aerosol composition.

As the injection gas, liquefied gas or compressed gas can be used. Examples of the gas include Liquefied Petroleum Gas (LPG), dimethyl ether (DME), nitrogen, carbon dioxide, compressed air, argon, and fluorine-based gas, but are not limited thereto. These gases may be used alone or in admixture of two or more. Examples of the fluorine-based gas include, but are not limited to, difluoromethane (HFC-32), 1, 1-difluoroethane (HFC-152a), 1,1,1, 2-tetrafluoroethane (HFC-134a), 1,1,1,2, 2-pentafluoroethane (HFC-125), 1,1, 1-trifluoroethane (HFC-143a),1,1,1,2,3,3, 3-heptafluoropropane (HFC-227ea), E-1,3,3, 3-tetrafluoropropene (HFO-1234ze (E)), and 2,3,3, 3-tetrafluoropropene (HFO-1234 yf). Among the fluorine-based gases, since the combustibility is incombustibility or slightly flammability, difluoromethane, 1,1,1, 2-tetrafluoroethane, 1,1,1,2, 2-pentafluoroethane, 1,1,1,2,3,3, 3-heptafluoropropane, E-1,3,3, 3-tetrafluoropropene, and 2,3, 3-tetrafluoropropene are preferable, and a mixture of E-1,3,3, 3-tetrafluoropropene, 2,3,3, 3-tetrafluoropropene, E-1,3,3, 3-tetrafluoropropene and 2,3,3, 3-tetrafluoropropene is particularly preferable because of low Global Warming Potential (GWP).

The present aerosol composition can be prepared by mixing the present solvent composition with the above-mentioned propellant gas, or can be provided by filling a pressure-resistant can.

[ use as a cleaning agent or solvent (method for cleaning article) ]

The solvent composition is suitable for removing foreign matters, grease, wax, flux, ink, and the like from precision machine parts, electronic materials (printed circuit boards, liquid crystal displays, magnetic recording parts, semiconductor materials, and the like), resin processing parts, optical lenses, clothing, and the like. Since the present solvent composition has appropriate fluidity or solubility, foreign substances (particles and the like) can be washed away or dissolved and removed. In addition, in the cleaning of various vehicles such as automobiles, two-wheeled vehicles, bicycles, construction machines, agricultural machinery, airplanes, railway vehicles, ships, and the like, vehicles, transportation devices, and washing devices (particularly, in the cleaning of brakes of these devices), a step of wetting and then washing is required, and the solvent composition has an appropriate boiling point and can wet and wash dirt, and thus is suitable for such cleaning (particularly, as a brake cleaning agent). The method of cleaning is not particularly limited, and examples thereof include a method of washing dirt by immersing the solvent composition in an article to be cleaned, a method of wiping with a wiping cloth, and a method of performing spray cleaning. These methods may also be used in combination. One particularly preferred embodiment is to put the solvent composition in an ultrasonic cleaning machine and immerse the object to be cleaned in the liquid to perform an ultrasonic cleaning treatment. In addition, spray cleaning is also one of preferable methods, for example, a method of mixing the present solvent composition with a jet gas to aerosolize the composition and spraying the aerosolized composition onto various articles to be cleaned.

As described above, the solvent composition hardly undergoes composition fluctuation even when used in an open system, and therefore exhibits stable cleaning power even if composition management is not frequently performed. In practice, this is a great advantage.

After the cleaning liquid for cleaning is recovered, the solvent composition can be recovered by separating and removing grease or foreign matters (particles) by performing a distillation operation. In recovering the present solvent composition, a filtration operation may be carried out. Since a distillation regeneration apparatus for a general cleaning agent is a single distillation system, when the present solvent composition contains an azeotropic composition(s) composed of 1233zd (z) and at least one selected from the group consisting of 3-methylpentane, 2, 3-dimethylbutane, 2-dimethylbutane, and methylcyclopentane, regeneration can be performed using a commercially available distillation regeneration apparatus and the composition is substantially unchanged.

In the case of performing the distillation operation, since the properties of 1233zd (z) and at least one liquid component selected from the group consisting of 3-methylpentane, 2, 3-dimethylbutane, 2-dimethylbutane and methylcyclopentane as an azeotropic (azeotrope-like) composition are maintained, the recovered liquid can be reused as a cleaning solvent without major composition adjustment thereafter. In addition, when the above-mentioned "solvent" or "additional component" is used, the "solvent" or "additional component" may be removed by distillation, and therefore, in this case, it is preferable to perform additional replenishment.

[ use of dehydrating agent and use of rinsing agent ]

The solvent composition can be used as a dehydrating agent. In the production process of articles used in various industrial fields such as automobiles, machinery, precision equipment, electrical, electronic, and optical fields, cleaning with water such as pure water, or cleaning with an aqueous cleaning agent, a quasi-aqueous cleaning agent in which a water-soluble solvent is blended with an aqueous cleaning agent, an alcohol cleaning agent, a glycol ether cleaning agent, a hydrocarbon cleaning agent in which a surfactant is blended with a hydrocarbon, or the like is sometimes performed. When an aqueous cleaning agent or a quasi-aqueous cleaning agent is used, water is adhered to the cleaned article, and a dehydration step of removing water with a dehydrating agent is usually performed after the cleaning step. The present solvent composition can be suitably used as a dehydrating agent for the dehydration step. In one embodiment, the present dehydrating agent comprises the present solvent composition. Or in one embodiment, the present dehydrating agent contains the above-described aerosol composition in place of the present solvent composition. When the present solvent composition or aerosol composition is used as a dehydrating agent, it is preferable to further contain an alcohol as a solvent. Similarly, the solvent composition can be suitably used as a rinse agent for removing a high boiling point cleaning agent adhering to an article after a cleaning process using the high boiling point cleaning agent. In one embodiment, the present rinse contains the present solvent composition or aerosol composition.

The dehydration method is not particularly limited except for using the present solvent composition or aerosol composition as a dehydrating agent, and conventionally known methods can be employed. For example, a method of drying a dehydrated article by contacting the dehydrated article with the present solvent composition or aerosol composition can be mentioned.

In some embodiments, the solvent composition exhibits both a cleaning action and a dehydrating action, and therefore, the cleaning step and the dehydrating step can be performed together. That is, by performing the cleaning step, it is possible to remove dirt adhering to the object to be cleaned and also to remove moisture that may adhere to the object to be cleaned. Therefore, it is not necessary to separately use the cleaning agent and the dehydrating agent used in the cleaning step and the dehydrating step, and productivity is enhanced. In addition, this does not prevent the use of the cleaning agent and the dehydrating agent used in the cleaning step and the dehydrating step from each other, and the present solvent composition can be used as the cleaning agent and/or the dehydrating agent in each step as needed. In some embodiments, the present solvent composition is suitable for cleaning an article (article to be cleaned) to which dirt (for example, water-soluble oil) containing moisture has adhered. By using the solvent composition, it is possible to remove water while removing dirt adhering to an article to be cleaned.

[ composition for Forming coating film and method for producing article with coating film ]

The present solvent composition can also be used as a solvent for coating nonvolatile components on the surface of an article. A coating film of a nonvolatile component can be formed on an article by dissolving a solute component in the present solvent composition to prepare a coating film-forming composition, applying the coating film-forming composition to the article, and evaporating the solvent composition. In addition, in the composition for forming a coating film and the method for producing/manufacturing an article with a coating film, which are one embodiment of the present invention, the present aerosol composition may be used instead of the present solvent composition, or the present solvent composition and the present aerosol composition may be used together.

The nonvolatile components described herein include a lubricant for imparting lubricity to an article, a paint or rust inhibitor for imparting a rust-preventing effect to a metal member, a paint or moisture-proof coating agent for imparting water repellency to an article, a paint or fingerprint-preventing agent for imparting stain-proofing performance to an article, and the like.

In addition, a lubricant may be dissolved in the solvent composition to prepare a lubricant solution. The present lubricant solution or aerosol composition is mild to the global environment, excellent in solubility of the lubricant, and sufficiently quick-drying, and therefore, it is suitable for forming a lubricant coating film by using the present solvent composition or aerosol composition as a solvent for the lubricant.

The lubricant is a substance for lubricating the friction surface and improving the mechanical efficiency of the friction surface, and is used to reduce the friction of the contact surface and prevent heat generation, wear, and damage when 2 members are moved in a state where the surfaces are in contact with each other. Lubricants are required to have appropriate viscosity, physical and chemical stability, oily or oxidative stability, and the like. The form of the lubricant may be any of liquid (oil), semisolid (grease), and solid. Examples of the lubricant include mineral oil type lubricants, synthetic oil type lubricants, fluorine type lubricants, and silicone (silicone) type lubricants. These lubricants may be used either individually or simultaneously.

The lubricant is preferably a fluorine-based lubricant or a silicone-based lubricant, since the solvent composition is excellent in solubility and dispersibility.

The fluorine-based lubricant is a lubricant having a fluorine atom in the molecule, and examples thereof include fluorine-based solid lubricants such as fluorine oil, fluorine grease, and polytetrafluoroethylene resin powder.

The fluorine oil is preferably a perfluoropolyether (hereinafter also referred to as PFPE) or an oligomer of chlorotrifluoroethylene, and examples thereof include those having the product names "Krytox (registered trademark) GPL 102" (manufactured by dupont corporation), "DAIFLOIL # 1", "DAIFLOIL # 3", "DAIFLOIL # 10", "DAIFLOIL # 20", "DAIFLOIL # 50", "DAIFLOIL # 100", "DEMNUM S-65" (manufactured by DAIKIN inusts, ltd.), "Fomblin (registered trademark) Y" series, "Fomblin (registered trademark) M" series, "Fomblin (registered trademark) W" series, and "Fomblin (registered trademark) Z" series (manufactured by Solvay Specialty Polymers, LLC).

The fluorine grease is preferably a fluorine grease obtained by blending a base oil of a fluorine oil such as PFPE or an oligomer of chlorotrifluoroethylene with polytetrafluoroethylene powder or another thickener. Examples of the product name include "Krytox (registered trademark) Grease 240 AC" (manufactured by DuPont corporation), "DAIFLOIL Grease DG-203", "DENMUM L65", "DENMUM L100", "DENMUM L200" (manufactured by DAIKIN INDUSTRIES, LTD.), "SUMITEC F936" (manufactured by SUMICO LUBRICAT CO., LTD.), "MOLYKOTE (registered trademark) HP-300", "MOLYKOTE (registered trademark) HP-500", "MOLYKOTE (registered trademark) HP-870", "MOLYKOTE (registered trademark) 6169" (manufactured by Dow Corning Toray Co., Ltd., above).

The silicone-based lubricant is a silicone-containing lubricant, and examples thereof include silicone oil and silicone grease (silicone grease).

Examples of the silicone oil include ordinary silicone oils (straight silicone oils), modified silicone oils such as reactive silicone oils and nonreactive silicone oils, and the like. More specifically, examples of the general silicone oil include dimethyl silicone oil, methylphenyl silicone oil, methyl hydrogen-containing silicone oil, and the like in which methyl groups, phenyl groups, and hydrogen atoms are bonded as substituents. Examples of the reactive silicone oil include amino group modification, epoxy group modification, carboxyl group modification, carbitol modification, methacrylic acid modification, phenol modification, and hetero functional group modification. Examples of the non-reactive silicone oil include polyether modification, methyl styryl modification, alkyl modification, higher fatty acid ester modification, hydrophilic special modification, fluorine modification, and the like. These silicone oils may be one kind or a mixture of two or more kinds. Examples of the Silicone oil include "Shin-Etsu Silicone KF-96", "Shin-Etsu Silicone KF-965", "Shin-Etsu Silicone KF-968", "Shin-Etsu Silicone KF-99", "Shin-Etsu Silicone KF-50", "Shin-Etsu Silicone KF-54", "Shin-Etsu Silicone HIVACF-4", "Shin-Etsu Silicone HIVACF-5", "Shin-Etsu Silicone KF-56A", "Shin-Etsu Silicone KF-995" (Shin-Etsu Chemical Co., Ltd., manufactured by Ltd.), "SH 200" (Dow Corning Tornay Co., Ltd.), "MDX 4-Cor4159" (manufactured by Dow).

The silicone grease is preferably a product obtained by blending various silicone oils as mentioned above as a base oil with a thickener such as a metal soap or various additives. Examples of the product name include "Shin-Etsu Silicone G-30 series", "Shin-Etsu Silicone G-40 series", "Shin-Etsu Silicone FG-720 series", "Shin-Etsu Silicone G-411", "Shin-Etsu Silicone G-501", "Shin-Etsu Silicone G-6500", "Shin-Etsu Silicone G-330", "Shin-Etsu Silicone G-340", "Shin-Etsu Silicone G-350", "Shin-Etsu Silicone G-630" (Shin-Etsu Chemical Co., Ltd., "produced by Ltd.," MoLYKOTE (registered trademark) SH33L "," MOLYKOTE (registered trademark) 41 "," MOLYKOTE (registered trademark) 44 "," LYMOKOTE (registered trademark) 822 "," MOLYKOTE (registered trademark) 111 "," vacuum for vacuum (registered trademark) 822 "," MOLYTE (registered trademark) for vacuum (registered trademark) 41 "," MOLYKOTE (registered trademark) for vacuum, "MOLYKOTE (registered trademark) thermal diffusion mixture" (manufactured by Dow Corning Toray co., ltd., above), and the like.

The lubricant solution may contain one kind of lubricant, or two or more kinds of lubricants.

The composition of the azeotrope-like composition (or the liquid composition) and the lubricant in the lubricant solution is not particularly limited, and may be appropriately selected as needed. For example, the lubricant is set to 0.1 mass% or more and 50 mass% or less with respect to 100 mass% of the present lubricant composition, but is not limited thereto.

The method for applying the present lubricant solution to the surface of an article is not particularly limited. Examples of the method include coating using a brush, coating by spraying, coating by immersing an article in the lubricant solution, and coating by bringing the inner wall of a tube or an injection needle into contact with the lubricant solution by sucking the lubricant solution.

As the rust inhibitor, the moisture-proof coating agent, or the fingerprint-proof agent, conventionally known ones can be used, and for example, a rust inhibitor is a substance that covers a metal surface that is easily oxidized by oxygen in the air and generates rust, and blocks the metal surface from oxygen, thereby preventing rust of a metal material.

These rust preventive, moisture-proof coating agent and fingerprint-proof agent can be dissolved in the present solvent composition in the same manner as the above-mentioned lubricant to prepare a solution, and the solution can be applied to the surface of an article to which various functions are imparted by the same method to form a coating film, thereby producing an article with a coating film.

Articles coated with a lubricant, a rust preventive, a moisture-proof coating agent, and a fingerprint-proof agent may be made of various materials such as metal, resin, elastomer, ceramics, and glass. Examples thereof include, but are not limited to, industrial equipment using fluorine-based lubricants, optical disk parts for CDs and DVDs in personal computers and audio equipment, home equipment such as printers and copiers, office equipment, and the like. Furthermore, the silicone-based lubricant can be suitably used for an injection needle or a syringe of a syringe, a medical tube member, and the like using the silicone-based lubricant.

The solvent composition or aerosol composition can also be used as a reaction solvent, an extractant, a drying agent, and the like.

Examples

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to the following examples as long as the invention does not exceed the gist thereof.

< measurement of gas-liquid equilibrium >

Example 1: 1233zd (Z) and 3-methylpentane mixture

A mixed solution (400g) of 1233zd (Z) and 3-methylpentane was placed in an Othmer (Othmer) type gas-liquid equilibrium distillation apparatus, and the gas composition and the liquid composition at equilibrium were determined by using a gas chromatograph. The measurement results are shown in table 1 and fig. 1.

[ Table 1]

As shown in table 1 and fig. 1, when the mixed solution of 1233zd (z) and 3-methylpentane contains 1233zd (z) in an amount of 99.9999 to 80.0000 mass% and 3-methylpentane in an amount of 0.0001 to 20.0000 mass% based on the total amount of the mixed solution, an azeotropic composition is formed. Among these, the use of 1233zd (z) in an amount of 99.9999 to 90.0000 mass% and 3-methylpentane in an amount of 0.0001 to 10.0000 mass% based on the total amount of the mixed solution is particularly preferable because the variation in liquid composition becomes smaller.

Example 2: 1233zd (Z) and 2, 3-dimethylbutane mixture

A gas chromatograph was used to determine a gas phase composition and a liquid phase composition at equilibrium in the same manner as in example 1, except that 2, 3-dimethylbutane was used instead of 3-methylpentane.

The measurement results are shown in table 2 and fig. 2.

[ Table 2]

As shown in table 2 and fig. 2, when the mixed solution of 1233zd (z) and 2, 3-dimethylbutane contains 1233zd (z) in an amount of 99.9999 to 75.0000 mass% and 2, 3-dimethylbutane in an amount of 0.0001 to 25.0000 mass% based on the total amount of the mixed solution, an (azeotrope-like) composition is formed. Among these, the use of 1233zd (z) in an amount of 99.9999 to 85.0000 mass% and 2,3 dimethylbutane in an amount of 0.0001 to 15.0000 mass% based on the total amount of the mixed solution is particularly preferable because the variation in liquid composition is smaller.

Example 3: 1233zd (Z) and Industrial Hexane blended solution

The gas composition and the liquid composition at the time of reaching an equilibrium state were determined by using a gas chromatograph in the same manner as in example 1, except that industrial hexane was used instead of 3-methylpentane. The measurement results are shown in table 3. As an example of the industrial hexane used, there is a mixture of hexane isomers containing 2, 2-dimethylbutane (2,2-DMB), 2, 3-dimethylbutane (2,3-DMB), 2-methylpentane (2-MP), 3-methylpentane (3-MP), n-hexane (n-Hex), Methylcyclopentane (MCP), the composition (mass ratio) of the mixture being 2,2-DMB/2,3-DMB/2-MP/3-MP/n-Hex/MCP ═ 5.7/5.5/5.8/5.8/64.3/12.6.

[ Table 3]

As shown in table 3, when the mixed solution of 1233zd (z) and industrial hexane contains 1233zd (z) in an amount of 99.9999 to 85.0000 mass% and industrial hexane in an amount of 0.0001 to 15.0000 mass% based on the total amount of the mixed solution, an (azeotrope-like) composition is formed. Among these, the use of 1233zd (z) in an amount of 99.9999 to 95.0000 mass% and industrial hexane in an amount of 0.0001 to 5.0000 mass% based on the total amount of the mixed solution is particularly preferable because the variation in liquid composition becomes smaller.

Example 4: 1233zd (Z) and 2, 2-dimethylbutane mixed solution

A gas chromatograph was used to determine a gas phase composition and a liquid phase composition at equilibrium in the same manner as in example 1, except that 2, 2-dimethylbutane was used instead of 3-methylpentane.

The measurement results are shown in table 4 and fig. 3.

[ Table 4]

As shown in table 4 and fig. 3, when the mixed solution of 1233zd (z) and 2, 2-dimethylbutane contains 1233zd (z) in an amount of 99.9999 to 60.0000 mass% and 2, 2-dimethylbutane in an amount of 0.0001 to 40.0000 mass% based on the total amount of the mixed solution, an azeotropic composition is formed. Among these, the use of 1233zd (z) in an amount of 99.9999 to 65.0000 mass% and 2,2 dimethylbutane in an amount of 0.0001 to 35.0000 mass% based on the total amount of the mixed solution is particularly preferable because the variation in liquid composition is smaller.

Example 5: 1233zd (Z) and mixed solution of methylcyclopentane ]

The gas composition and the liquid composition at the time of reaching the equilibrium state were determined by using a gas chromatograph in the same manner as in example 1, except that methylcyclopentane was used instead of 3-methylpentane. The measurement results are shown in table 5 and fig. 4.

[ Table 5]

As shown in table 5 and fig. 4, when the mixed solution of 1233zd (z) and methylcyclopentane contains 99.9999 to 85.0000 mass% of 1233zd (z) and 0.0001 to 15.0000 mass% of methylcyclopentane, based on the total amount of the mixed solution, an (azeotrope-like) composition is formed. Among these, the use of 1233zd (z) in an amount of 99.9999 to 90.0000 mass% and methylcyclopentane in an amount of 0.0001 to 10.0000 mass% based on the total amount of the mixed solution is particularly preferable because the variation in liquid composition becomes smaller.

< solubility and detergency of processing oil >

Since the (azeotrope-like) compositions of examples 1 to 5 dissolve cutting oil, grinding oil, press working oil, punching oil, rust preventive oil, refrigerating oil, compressor oil, turbine oil (turbine oil), and silicone oil well, they are suitable as detergents for articles to which various oils are adhered.

< solubility of Lubricant and coating Properties >

The azeotrope-like compositions of examples 1 to 5 are suitable for forming lubricant coatings on the surfaces of articles because they dissolve mineral oil-based lubricants, synthetic oil-based lubricants, and silicone-based lubricants well and have sufficient quick-drying properties.

< solubility of Rust preventive oil, coatability >

The azeotropic composition(s) of examples 1 to 5 dissolve a rust preventive oil well and have sufficient quick-drying properties, and are therefore suitable for forming a rust preventive coating film on the surface of an article.