JPH08245525A - Fluorine-based solvent - Google Patents

Abstract

PURPOSE: To obtain a fluorine-based solvent containing a specific hydrogen- containing polyfluoro tertiary amine, having small influence on global warming without disrupting ozone layer, excellent in cleaning property and useful for dry cleaning, coating, extraction, etc. CONSTITUTION: This fluorine-based solvent contains (A) one or two or more kinds of hydrogen-containing polyfluorotertiary amine of formula I (R<1> is a 1-2C perfluoroalkyl; R<2> is a 1-3C polyfluoroalkyl; X is H or trifluoromethyl) or formula II (R<3> is methyl, ethyl or propyl) and further preferably (B) one or more compounds selected from the group consisting of a hydrocarbon compound, an alcohol compound, an ether compound, a ketone compound, an ester compound, an organic nitrogen compound, an organosulfur compound and an organosilicon compound, preferably in an amount of 1-50wt.% based on the component A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluorinated solvent containing a hydrogen-containing polyfluoro tertiary amine, which does not destroy the ozone layer and has a small effect on global warming.

[0002]

2. Description of the Related Art Conventionally, halogenated hydrocarbons have been known as a cleaning solvent for plastics, rubber products, electronic parts and the like. In particular, a halogenated hydrocarbon group having a chlorine atom or a chlorine atom and a fluorine atom is nonflammable and stable, and can dissolve waxes and fats and oils, and is therefore widely used in various industrial fields.

For example, as those having a chlorine atom,
1,1,1-trichloroethane, trichloroethylene,
As tetrachloroethylene having a chlorine atom and a fluorine atom (hereinafter referred to as “CFC”), trifluorotrichloroethane (hereinafter referred to as “CFC113”) and the like are known, and the latter CFC113 is particularly low. Since it is toxic and does not corrode the surface of plastics, rubber, etc., it is widely used for various purposes.

[0004]

However, while the halogenated hydrocarbon has such excellent characteristics,
Chlorine atom, which is one of the constituent elements, acts as a catalyst and destroys the ozone layer surrounding the earth. Therefore, "specific CFCs" such as CFC113 and 1,1,1-trichloroethane are completely abolished. Was internationally arranged.

In order to deal with such a problem, the development of a new solvent replacing these solvents is indispensable. In fact, various substances replacing CFC113 as a cleaning solvent have been concretely studied, but they are still effective. Currently, no alternatives have been found.

[0006] Further, in recent years, attention has been especially paid to prevention of global warming as well as protection of the ozone layer.
As one of the performances required of the alternative solvent compounds, it is also an important requirement that the effect on global warming is small. The evaluation of the effect on global warming is considered to be based on the values of global warming potential (GWP or HGWP) and atmospheric lifetime. That is, considering the issue of global warming,
It is said that a future CFC candidate compound is preferably a compound having a global warming potential as small as possible and an atmospheric lifetime of 2-3 years or less.

On the other hand, in 1991, Du Pon
HFC-43, a hydrofluorocarbon developed by Company t
_{-10mee (CF 3 CFHCFHCF 2 CF 3} ) , the
Although it has some properties as an alternative solvent that does not destroy the ozone layer, it has been announced that HWGP is 0.25 and the life in air is 20.8 years.

As for amine compounds, 3M Company
As a draining agent and a rinse agent for organic solvents in the VD ^™ cleaning system, a perfluorocarbon liquid PF-5052 (perfluoro-N-) containing no hydrogen atom in the molecule is used.
(Methyl morpholine) was launched several years ago, but the atmospheric lifetime of the compound is estimated to be hundreds to thousands of years.

As the hydrogen-containing polyfluoro tertiary amine, for example, monohydropolyfluoro tertiary amine having one hydrogen atom in the molecule described in JP-A-5-132451 is known. However, the compound has a very low dissolving power and is not suitable as a cleaning solvent.

The present invention has been made in view of the above circumstances, and eliminates the drawback that the conventional cleaning solvent composed of CFC113 or the like causes destruction of the ozone layer,
It is intended to provide a new fluorine-based solvent having an excellent cleaning action while considering new environmental problems such as global warming.

[0011]

The fluorine-based solvent according to claim 1 comprises one or more hydrogen-containing polyfluoro tertiary amines represented by the following general formula (I), or contains It is characterized by containing one or more hydrogen polyfluoro tertiary amines.

[0012]

Embedded image

The fluorine-based solvent according to claim 2 is a hydrogen-containing polyfluoro tertiary amine represented by the following general formula (II).
One or two or more of these hydrogen-containing polyfluoro tertiary amines are included.

[0014]

[Chemical 4]

The fluorinated solvent according to claim 3 is the same as the fluorinated solvent according to claim 1 or 2, wherein the second component is further a hydrocarbon compound, an alcohol compound, an ether compound, a ketone compound, an ester compound, an organic nitrogen compound, an organic compound. 1 selected from the group consisting of sulfur compounds and organosilicon compounds
One or two or more species is contained, and the content of the second component is 1 to 50% by weight of the weight of the hydrogen-containing polyfluoro tertiary amine.

The fluorine-based solvent according to claim 4 is the fluorine-based solvent according to any one of claims 1 to 3, which is a cleaning agent.

The fluorine-based solvent according to claim 5 is the fluorine-based solvent according to any one of claims 1 to 3, which is a draining agent.

According to a sixth aspect of the present invention, the fluorine-based solvent is a solvent for dry cleaning in the fluorine-based solvent according to any one of the first to third aspects.

The fluorinated solvent according to claim 7 is the fluorinated solvent according to any one of claims 1 to 3, which is a solvent for paints.

The fluorinated solvent according to claim 8 is the fluorinated solvent according to any one of claims 1 to 3, which is a solvent for extraction.

The present invention will be described in detail below.

In the hydrogen-containing polyfluoro tertiary amine according to claim 1 of the present invention, when R ¹ is a trifluoromethyl group, R ² may or may not have a hydrogen atom having 1 to 3 carbon atoms. It is a fluoroalkyl group, and X may be H or a trifluoromethyl group. When R ¹ is a pentafluoroethyl group and X is a trifluoromethyl group, R 1
^It is preferable that ² is a polyfluoroalkyl group having or not having a hydrogen atom having 1 or 2 carbon atoms, since the hydrogen-containing polyfluoro tertiary amine has an appropriate boiling range. When R ¹ is a pentafluoroethyl group and X is H, R ² may be a polyfluoroalkyl group having or not having a hydrogen atom having 1 to 3 carbon atoms.

In the hydrogen-containing polyfluoro tertiary amine according to claim 2 of the present invention, when R ¹ is a trifluoromethyl group, R ³ is an ethyl group or a propyl group. When R ¹ is a pentafluoroethyl group, it is preferable that R ³ is a methyl group, an ethyl group or a propyl group because the hydrogen-containing polyfluoro tertiary amine has a suitable boiling range.

Hydrogen-containing material used in the invention of claim 1
The method for producing a polyfluoro tertiary amine is described in Japanese Patent Application No. 6-1.
No. 76769, that is, the general formula CF
₃ N = CFY (wherein Y is F or trifluoromethyl)
A perfluoroazaalkene represented by
Rufluoro-2-aza-2-propene (CF₃ N = CF
₂ ), Perfluoro-2-aza-2-butene (CF₃ N
= CFCF₃ ) Etc. to acetonitrile, N, N-dimethyl
Ruformamide, diglyme, dimethyl sulfoxide, N
-Aprotic polarity such as methylpyrrolidone and sulfolane
In a solvent, potassium fluoride and / or cesium fluoride, etc.
Alkali metal fluoride of, and the following general formula (III)
By reacting with the sulfonates represented
Can be easily obtained.

EZ ¹ (III) (wherein E is a perfluoroalkyl group having 1 to 4 carbon atoms, preferably a trifluoromethyl group).
Further, Z ¹ is a sulfonic acid ester in which the ester moiety (Z ¹ ) is an alkyl group having 2 to 5 carbon atoms as represented by the following formula. Z ¹ = -SO ₂ OCHXR ⁴ (wherein R ⁴ represents a polyfluoroalkyl group having or not having a hydrogen atom having 1 to 3 carbon atoms, and X represents H or a trifluoromethyl group)) Sulfonic acid Specific examples of the ester include the following, which are selected and used according to the intended hydrogen-containing polyfluoro tertiary amine.

CF ₃ SO ₂ OCH ₂ CF ₂ H, CF
₃ SO ₂ OCH ₂ CF ₃ , CF ₃ SO ₂ OCH ₂ CF ₂
CF ₂ H, CF ₃ SO ₂ OCH ₂ CF ₂ CF ₃ , CF ₃
SO ₂ OCH (CF ₃ ) ₂ , CF ₃ SO ₂ OCH (CF
₃ ) CF ₂ CF ₃ , CF ₃ SO ₂ OCH (CF ₃ ) CF
₂ CF ₂ CF ₃ , CF ₃ SO ₂ OCH ₂ CF ₂ CFHC
_{F 3, CF 3 SO 2 OCH} 2 CF 2 CF 2 CF 3 when manufacturing a hydrogen-polyfluoro tertiary amines used in the invention of claim 2, in the above method, as sulfonic acid esters, of the preceding claims 1 The perfluoroalkyl sulfonic acid ester used for the production of hydrogen-containing polyfluoro tertiary amine can be used. In addition, p-
The ester moiety (Z ² ) of various sulfonic acid esters such as toluene sulfonic acid ester, alkyl sulfuric acid and methane sulfonic acid ester has a carbon number of 1
A sulfonate ester which is an alkyl group of ˜3 can be used.

Z ² = -SO ₂ OC _n H _{2n + 1} (where n is 1, 2 or 3) Specific examples thereof include the following, the desired hydrogen-containing content: It is selected and used according to the polyfluoro tertiary amine. In the following, C ₆ H ₄ is a phenylene group.

CF ₃ SO ₂ OCH ₃ , C ₂ F ₅ SO
₂ OCH ₃ , C ₃ F ₇ SO ₂ OCH ₃ , C ₄ F ₉ S
O ₂ OCH ₃ , CF ₃ SO ₂ OCH ₂ CH ₃ , CF ₃ S
O ₂ OC ₃ F ₇ , CH ₃ C ₆ H ₄ SO ₂ OCH ₃ , CH
₃ C ₆ H ₄ SO ₂ OCH ₂ CH ₃ , CH ₃ C ₆ H ₄ SO
₂ OC ₃ F ₇ , CH ₃ OSO ₂ OCH ₃ , CH ₃ CH ₂
OSO ₂ OCH ₂ CH ₃ , C ₃ H ₇ OSO ₂ OC ₃ H
₇ , CH ₃ SO ₂ OCH ₃ , CH ₃ SO ₂ OCH ₂
CH ₃ , CH ₃ SO ₂ OC ₃ H _{7, that} is, the sulfonate used in the present invention is an alkylating agent for introducing an alkyl group or a polyfluoroalkyl group, and the substituent derived from the sulfonate is
The substituent CHXR in the above general formula (I) is bonded to the nitrogen atom of the hydrogen-containing polyfluoro tertiary amine to be synthesized.
² or the above-mentioned substituent R ³ in the general formula (II) is constituted, and thus the alkyl ester having 1 to 3 carbon atoms or the polyfluoroalkyl ester having 2 to 5 carbon atoms of the sulfonic acid as described above. Is used.

The synthetic yield varies depending on the type of sulfonic acid ester used, and when synthesizing the compound according to claim 1, generally, the synthetic yield is the same under other conditions. , Trifluoromethanesulfonic acid ester is the highest and is therefore most preferably used. Then, the yield decreases in the order of methanesulfonic acid ester, alkyl sulfuric acid, and p-toluenesulfonic acid ester. When synthesizing the compound according to claim 2, alkylsulfuric acid and trifluoromethanesulfonic acid ester are most preferably used.

The composition of the reaction system, the reaction temperature and the reaction time vary depending on the kind of the drug used and the intended product, but in the usual case, it is preferable to adopt the following conditions.

The amount of the sulfonic acid ester used is 0.5 to 1 mol of perfluoroazaalkene as a starting material.
It is suitable to use 2.0 times mol, preferably 1.05 to 1.25 times mol. Even if an excessive amount of sulfonic acid ester is used, the yield does not improve, which is uneconomical.

The amount of alkali metal fluoride used is 0.5 to 1 mol of perfluoroazaalkene as a starting material.
A 10-fold molar amount, and preferably a 1.5- to 8-fold molar amount is suitable. By using such an excess amount, the yield is improved. However, even if it is used in an excessively large amount, the yield will peak and the production efficiency will be low.

The ratio of the aprotic polar solvent to the starting material perfluoroazaalkene is 500 to 2 per mol of the perfluoroazaalkene.
It is preferably used in the range of 000 ml. If the aprotic polar solvent is used in a large amount, the reaction time can be shortened, but if it is used in an excessively large amount, the production efficiency per batch becomes low, which is uneconomical.

The reaction temperature and the reaction time are preferably 0 to 100 ° C. and 6 to 80 hr, more preferably 20 to 80 ° C. and 12 to 65 hr, respectively.

Examples of the hydrogen-containing polyfluoro tertiary amine according to the present invention thus produced include the following.

The hydrogen-containing polyfluoro tertiary amine according to claim 1 has an α carbon atom in one of the three substituents bonded to the nitrogen atom represented by the general formula (I). It is a hydrogen-containing polyfluoro tertiary amine having a structure having no fluorine atom, and preferable specific examples thereof are as follows.

[0037]

Embedded image

[0038]

[Chemical 6]

The most suitable specific example is the above-mentioned general formula (I).
In, R ¹ is a trifluoromethyl group having 1 carbon atom, R ² is a polyfluoroalkyl group having 1 to 3 carbon atoms and having or not having one hydrogen atom, and X is H or a trifluoromethyl group. And the specific examples thereof are as follows.

[0040]

[Chemical 7]

The hydrogen-containing polyfluoro tertiary amine corresponding to claim 2 is the hydrogen-containing polyfluoro tertiary amine represented by the general formula (II) and having an alkyl group, and a preferred specific example thereof. Is as follows.

[0042]

Embedded image

Further, a more preferred specific example is the above-mentioned general formula (I
In I), R ¹ is a trifluoromethyl group having 1 carbon atom, and R ³ is an alkyl group having 2 or 3 carbon atoms, and specific examples thereof are as follows.

[0044]

[Chemical 9]

These hydrogen-containing polyfluoro tertiary amines, when used alone, have the action of selectively dissolving and removing stains, the compatibility with materials, and the incombustibility, which the hydrogen-containing polyfluoro tertiary amines have. The effects such as flame retardancy, drying property, and stain removability of minute parts due to low surface tension are most effectively exhibited. However, depending on the object to be cleaned, it is not possible to use the hydrogen-containing polyfluoro tertiary amine alone. In some cases, a sufficient cleaning effect may not be obtained. Therefore,
In such a case, in addition to the hydrogen-containing polyfluoro tertiary amine, as a second component, a hydrocarbon compound, an alcohol compound, an ether compound, a ketone compound, an ester compound, an organic nitrogen compound, an organic sulfur compound and an organic silicon compound. One kind or two or more kinds selected from the group consisting of is used. In this case, specific examples of the hydrocarbon compound include aliphatic or aromatic hydrocarbons such as pentane, hexane, heptane, octane, cyclohexane, benzene and toluene. Examples of alcohol compounds include methanol, ethanol, propanol, isopropanol, butanol, carbitol and the like.
Examples of the ether compound include diethyl ether, diisopropyl ether, dibutyl ether, dioxane, tetrahydrofuran, monoglyme, diglyme and the like. Examples of the ketone compound include acetone, methyl ethyl ketone, 2-pentanone, 3-pentanone, cyclopentanone and cyclohexanone. Examples of the ester compound include carboxylic acid esters such as formic acid ester and acetic acid ester. Examples of the organic nitrogen compound include acetonitrile, nitrobenzene, dimethylformamide, N-methylpyrrolidone and the like. Examples of the organic sulfur compound include dimethyl sulfoxide and sulfolane. Specific examples of the organosilicon compound include hexamethyldisiloxane and octamethylcyclotetrasiloxane. The hydrogen-containing polyfluoro tertiary amine according to the present invention exhibits good solubility in these second components at any ratio.

When the fluorine-based solvent of the present invention is used for applications requiring solubility of, for example, a cleaning agent, these second solvents are used.
If the use ratio of the component is too small, the effect of improving the dissolving power due to the use of the second component cannot be sufficiently obtained, and conversely, if the use ratio of the second component is too large, the hydrogen-containing poly (vinyl alcohol) according to the present invention is used. Effects of selective dissolution and removal of stains, compatibility with materials, non-combustibility or flame retardancy, drying properties, and stain removability of minute parts due to small surface tension by using fluoro tertiary amine are impaired. Be done. Therefore, when the second component is used, the blending amount of the second component is preferably 1 to 50% by weight based on the hydrogen-containing polyfluoro tertiary amine.

When the hydrogen-containing polyfluoro tertiary amine according to the present invention is used as a draining agent, generally, the second component is not blended and the hydrogen-containing polyfluoro tertiary amine is used alone. Alternatively, even when the second component is used, it is preferable that the ratio is less than the above ratio.

The fluorine-containing solvent of the present invention may further contain a stabilizer, if necessary. In this case, examples of the stabilizer include nitro compounds, unsaturated hydrocarbons, epoxy compounds, phenol compounds, alkenylamines, cyclic nitrogen compounds, unsaturated alcohols and the like. In addition, various surfactants may be blended.

The solvent of the present invention is non-combustible or flame-retardant because it contains a hydrogen-containing polyfluoro tertiary amine having a large number of fluorine atoms in the molecule, and has a low surface tension, so that it is excellent in drying property. Since it has the same degree of dissolving power as the conventional CFC113, it can be suitably used as a solvent.

Specific uses as a solvent are a cleaning agent, a draining agent, a dry cleaning solvent, a paint solvent, an extraction solvent and the like. As a cleaning agent, used to remove flux, grease, oil, wax, ink, etc. from the surfaces of glass, ceramics, plastics, rubber, and various metal products, especially IC parts, electrical equipment, precision machinery, optical lenses, etc. To be Further, the draining agent is used for removing water from the surface after washing the article with water. As a cleaning method, hand wiping, dipping, spraying, shaking, ultrasonic cleaning, steam cleaning or the like may be adopted.

[0051]

The inventors of the present invention have conducted extensive studies in view of the above-mentioned state of the art, and as a result, an amine compound having a specific structure, that is, a solvent containing a hydrogen-containing polyfluoro tertiary amine Since it does not contain chlorine, there is no danger of depleting the ozone layer, it has an excellent effect of cleaning oils and fats, dust and the like, and it also has an appropriate dissolving power like CFC113, so only various stains It has been found that it selectively dissolves and removes and does not attack the composite parts made of metal, plastic, elastomer, etc., to be cleaned.

Further, in consideration of the problem of global warming, it is desired that the compound has a suitable balance of stability and degradability in good balance.
The content and introduction position of fluorine and hydrogen atoms are important factors that essentially determine the chemical and thermal stability of the compound itself, the degree of influence on the environment, and the like.

For example, in an amine-based fluorine compound,
Generally, when a carbon atom adjacent to a nitrogen atom is surrounded by a fluorine atom, it is said to be difficult to decompose because it is extremely stable, and conversely, both a fluorine atom and a hydrogen atom are contained in this carbon atom. When they are combined, they are said to be extremely unstable.

From this point of view, one of the three substituents bonded to the nitrogen atom is an alkyl group, or a polyfluoro having a structure in which a fluorine atom is not bonded to the α-position carbon atom. The inventors have found that the hydrogen-containing polyfluoro tertiary amine, which is an alkyl group, is a compound to which appropriate stability and decomposability are imparted in good balance, and have completed the present invention.

The hydrogen-containing polyfluoro tertiary amines according to claims 1 and 2 of the present invention each have a fluorine atom at the α carbon atom in one of the three substituents adjacent to the nitrogen atom. HGW, which is a compound with a structure that does not contain
It is estimated that P is 0.1 or less and life in the atmosphere is several years or less. Therefore, the above-mentioned HFC-43-10mee and PF-
Compared with 5052 and the like and monohydropolyfluoro tertiary amine, it has more appropriate chemical and thermal stability and decomposability, and is useful as an alternative solvent in consideration of global warming.

Since the hydrogen-containing polyfluoro tertiary amine according to the present invention does not contain chlorine in the molecule, there is no fear of destroying the ozone layer. Since it has an appropriate dissolving power, it does not affect the article to be cleaned, has little influence on the plastic, and can selectively dissolve and remove only the stain. Of the substituents bonded to the nitrogen atom, the structure has one substituent without a fluorine atom on the α carbon atom, so it has a good balance of stability and decomposability, so its life in air is also compared. Short and effective in preventing global warming. Since it has many fluorine atoms in the molecule, it is nonflammable or flame retardant. Further, since the surface tension is small and the latent heat of vaporization is small, the drying property is excellent, and it can be easily dried and removed after the washing is completed. In particular, due to the characteristic that the surface tension is small, even a product to be cleaned having a complicated shape can easily enter a very small crack or blind hole and remove dirt on the part. With such characteristics, it can be used very effectively as a solvent.

By the way, the fluorine-based solvent according to the present invention is
When it is used alone, good solubility cannot be obtained,
The second component further contains one or more selected from the group consisting of hydrocarbon compounds, alcohol compounds, ether compounds, ketone compounds, ester compounds, organic nitrogen compounds, organic sulfur compounds and organic silicon compounds. When the content of hydrogen polyfluoro tertiary amine is 1 to 50% by weight, a good cleaning effect can be obtained with an excellent dissolving power.

[0058]

EXAMPLES The present invention will be specifically described below with reference to Examples, Comparative Examples, Reference Examples and Experimental Examples, but the present invention is not limited to the following Examples unless it exceeds the gist. is not.

Examples 1 to 8, Comparative Example 1, Reference Examples 1 to 4 Test pieces of SUS-304 were machine oil (made by Nippon Oil Co., Ltd. C
After being immersed in Q-30) for 5 minutes, various cleaning agents having the formulations shown in Table 1 were taken out, and the extent to which the mechanical oil was removed was visually observed, and the results are shown in Table 1.

[0060]

[Table 1]

From Table 1, the specific hydrogen-containing polyfluoro third
The fluorine-containing solvent of the present invention containing a primary amine, especially a hydrogen-containing polyfluoro tertiary amine and a hydrogen-containing polyfluoro tertiary
As long as it is a detergent in which a second component within a predetermined range is mixed with a primary amine, CFC113 which is a conventional detergent for machine oil.
It can be seen that a good cleaning effect equivalent to

Experimental Example 1 Each plastic test piece was immersed in various cleaning agents shown in Table 2 at 20 ° C. for 24 hours, taken out, and immediately after taking out, the dimensional change rate and the weight change rate were measured, and the appearance was evaluated. It was visually observed, and the results are shown in Table 2. Note that N
In o. 5 and 6, the result of the immersion at 45 ° C for 1 hour was examined.

From Table 2, the fluorine-based solvent according to the present invention is
It can be seen that it has almost no adverse effect on the plastic.

[0064]

[Table 2]

Experimental Example 2 Hydrogen-containing polyfluoro tertiary amine compound 50 shown in Table 3
By weight, 0 to 50 parts by weight of n-hexane or 0 to 50 parts by weight of carbitol were mixed at room temperature, and the solubility was examined. The results are shown in Table 3.

[0066]

[Table 3]

From Table 3, it can be seen that the hydrogen-containing polyfluoro tertiary amine according to the present invention can be dissolved in an arbitrary ratio with the second component such as n-hexane.

Experimental Example 3 The solubility of the hydrogen-containing polyfluoro tertiary amine shown in Table 4 in water at room temperature was measured by a gas chromatography quantitative method, and the results are shown in Table 4.

From Table 4, it can be seen that the hydrogen-containing polyfluoro tertiary amine according to the present invention hardly dissolves in water and is very useful as a draining agent.

[0070]

[Table 4]

[0071]

As described in detail above, the fluorine-containing solvent containing the hydrogen-containing polyfluoro tertiary amine of the present invention has good detergency, does not adversely affect the material, especially the plastic, and has a chlorine atom. Since it does not exist, the ozone layer destruction problem does not occur. In addition, it is effective from the viewpoint of global warming, and the same usage mode as the conventional CFC-based solvent can be adopted. Therefore, the existing apparatus can be directly used without making a great change. It is industrially extremely valuable because it has the advantage of being applicable.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yukio Sato Hongo 2-chome, Hongo 2-chome, Bunkyo-ku, Tokyo 6th floor, Wakai Building, 6th floor, Research Institute for Global Environmental Technology (72) Inventor Masami Iwasaki Tokyo 2-40-17 Hongo, Bunkyo-ku, Hongo-Wakai Building, 6th floor, Research Institute for Global Environmental Technology

Claims (8)

[Claims] 1. A fluorine-based solvent containing one or more hydrogen-containing polyfluoro tertiary amines represented by the following general formula (I). Embedded image 2. A fluorinated solvent containing one or more hydrogen-containing polyfluoro tertiary amines represented by the following general formula (II). Embedded image 3. A hydrocarbon compound, an alcohol compound, an ether compound, a ketone compound, an ester compound, an organic nitrogen compound, an organic compound together with the hydrogen-containing polyfluoro tertiary amine represented by the general formula (I) or (II). The amount of 1 type or 2 types or more selected from the group consisting of a sulfur compound and an organic silicon compound is contained in 1 to 50% by weight of the weight of the hydrogen-containing polyfluoro tertiary amine. Fluorine-based solvent. 4. The fluorine-based solvent according to any one of claims 1 to 3, which is a cleaning agent. 5. The fluorine-based solvent according to claim 1, which is a draining agent. 6. The fluorine-based solvent according to claim 1, which is a dry cleaning solvent. 7. The fluorine-based solvent according to any one of claims 1 to 3, which is a coating solvent. 8. The fluorine-based solvent according to claim 1, which is a solvent for extraction.