JPH10231499A - Nonflammable or flame-retardant vapor cleaning composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a vapor cleaning compsn. which solves the environmental and equipment problems caused by chlorofluorocarbons and has a b.p. higher than that of a fluorocarbon alone, thus providing higher vapor cleaning effects, by mixing a fluorocarbon with a nonvolatile substance in a specified ratio. SOLUTION: This compsn. is a mixture of 10-99wt.% fluorocarbon and 1-90wt.% nonvolatile substance, and in the compsn., the two ingredients are completely compatible with each other at room temp. or they becomes compatible with each other at about the b.p. of the fluorocarbon to form a homogeneous soln. Pref. the compsn. is further mixed with 1-60wt.% volatile polyorganosiloxane having a b.p. lower than 130 deg.C. A hydrofluoroether and a hydrofluorocarbon are examples of ingredient A. An example of ingredient B is a nonvolatile polyorganosiloxane having a b.p. of 130 deg.C or higher.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steam cleaning composition which is a substitute for a chlorine-based cleaning agent such as chlorofluorocarbon and 1,1,1-trichloroethane, and more particularly to a non-flammable or non-flammable composition comprising a mixture of a fluorocarbon and a non-volatile substance. It relates to a flame retardant steam cleaning composition.

[0002]

2. Description of the Related Art Conventionally, 1,1,1-trichloroethane and chlorofluorocarbon have been used as a solvent for cleaning optical parts and precision parts. This is because CFCs are chemically stable, have low toxicity to living organisms, and have low heat of evaporation and low surface tension, so they penetrate into minute gaps, dry quickly, and then clean with steam. This is because it is possible to obtain a substrate surface having a high surface roughness. In addition, there is an advantage that the working environment is safe because of the nonflammability during steam cleaning.

Also, 1,1,1-trichloroethane has an excellent degreasing ability, and CFCs have the property of dissolving oils and fats but do not attack plastics and rubber. However, despite its various advantages, CFCs and the like are restricted in use because they are ozone depleting substances.

[0004] Furthermore, since steam cleaners such as chlorofluorocarbon have a low boiling point, it is necessary to provide a device such as installing a cold bath between the washing step and the drying step in order to impart good drying properties. In order to further prevent the leakage of CFC vapor out of the tank,
It was necessary to take measures such as flowing cooling water having a lower temperature through the chiller coil. Therefore, ancillary equipment of the apparatus increases, and running costs including maintenance thereof are inevitably high.

[0005] The properties required of the cleaning agent in place of chlorofluorocarbon and 1,1,1-trichloroethane are that there is no ozone layer destruction, that it is chemically stable, that it penetrates into the gaps between fine parts, and that it has steam. It has low surface tension and low heat of evaporation in order to obtain quick drying by washing.
Further, depending on the working environment, characteristics such as nonflammability or flame retardancy are required.

One of the solvents satisfying these conditions is a fluoro compound, so-called hydrofluorocarbon (CF).
₃ CFHCFHCF ₂ CF ₃ ), hydrofluoroether (C ₄ F ₉ OCH ₃ ) and the like. However, since it has no chlorine atom in the molecule, it cannot be expected to have its own dissolving power and detergency for dirt. As a method of overcoming this, there is a method of removing dirt with another solvent having a detergency and then performing steam cleaning with a fluoro compound represented by these fluorocarbons. The lower the molecular weight of the fluoro compound, the more chemically stable it is, and the better the solubility with the solvent used in the previous step, but the steam cleaning effect is low. This is due to the low boiling point of the low molecular weight fluoro compound. The lower boiling point has better drying properties, but is less likely to be condensed, so that the steam cleaning effect is inferior. The amount of condensation is proportional to the square of the difference between the boiling point of the steam cleaner and the initial temperature of the part.

[0007] Further, a low boiling point leads to an increase in consumption due to evaporation, which is not desirable in terms of economic rationality and facilities.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned environmental and equipment problems of conventional fluorocarbons and the like by mixing the boiling point of a low molecular weight fluoro compound with a non-volatile substance. It is an object of the present invention to provide a non-flammable or flame-retardant steam cleaning composition which can obtain higher steam detergency by raising the temperature.

[0009]

Means for Solving the Problems The present inventors have made intensive studies to achieve the above object, and found that the non-combustible or non-combustible material comprising the fluorocarbons (A) and the non-volatile substance (B) was used. It has been found that the composition shown exhibits higher detergency and superior drying characteristics due to the effect of increasing the boiling point, as compared to fluorocarbons alone.

That is, the non-combustible or flame-retardant steam cleaning composition for raising the boiling point of the fluorocarbons (A) of the present invention is constituted by adding a non-volatile substance (B) to the fluorocarbons (A). . Further, a volatile polyorganosiloxane (C) having a boiling point of less than 130 ° C.
Are mixed.

First, the mechanism of the increase in the boiling point will be described.

When a non-volatile solute is added to a solvent, the boiling point of the solvent rises because the solvent boils and molecules of the solute prevent the molecules from violently jumping out of the liquid surface. The rising temperature is proportional to the number of moles of solute mixed, not the type of solute. The non-volatile substance here does not cause a chemical change with the solvent, but has a boiling point higher than that of the fluorocarbons (A).

When a volatile substance is added to a solvent, the composition tends to change, the flash point is lowered, and the like.
Volatile substances are basically unusable in the present invention. However, volatile polyorganosiloxane having a boiling point of less than 130 ° C., which will be described later, is an exception.

Next, a method of calculating a rise in boiling point will be described.

When the rise in boiling point when a solute dg having a molecular weight of M is dissolved in a solvent having a molecular weight of M is represented by ΔTb, it is calculated by the following equation. In the following equation, deviation occurs when the solute is dissociated in the solution. In the present invention, it is considered that there is no significant shift since the two components are completely dissolved to form one liquid.

ΔTb = Kb × 1000 d / M / D Here, Kb is a molar boiling point rising constant, and is a value which does not change depending on the type of solute for the same solvent. Kb
Varies depending on the solvent. Thermodynamically constant Kb
Is related to the boiling point Tb (absolute temperature) of the solvent and the heat of vaporization q of 1 g of the solvent by the following formula.

Kb = RTb ² / 1000q where R is a gas constant (1.987 cal / K · mol). still,
In the above equation, a deviation of ± 7 ° C. is expected in the real solution.

Generally, in the immersed state, the boiling point further rises due to the addition of the static pressure head of the solution. However, in the present invention containing a non-volatile substance, when immersed, adhesion of particles and In the case of immersion, it is preferable to apply steam after immersion because the non-volatile substance may be adsorbed. For example, it is preferable to perform steam cleaning while pulling up after dipping in a pre-process or a steam cleaning tank.

The non-combustible or flame-retardant steam cleaning composition of the present invention, which achieves the above object, is characterized by comprising a mixture of a fluorocarbon (A) and a non-volatile substance (B), and further has a boiling point of 130 ° C. Characterized in that less than 10% of volatile polyorganosiloxane (C) is added.

Hereinafter, the substance used in the present invention will be specifically described.

Fluorocarbons have excellent drying properties due to low latent heat of evaporation and low surface tension. Furthermore, since many of them are nonflammable or nonflammable, they are widely used as steam cleaners. Examples of the fluorocarbons (A) include hydrofluoroethers, hydrofluorocarbons, and perfluorocarbons.

The hydrofluoroethers of the general _{formula: (C t H 2t + 1} -u F u) -O- (C v H
_{2v + 1−w} F _w ) (t, u, v and w each represent an integer, preferably u = 2t + 1, w = 0), and specifically, C ₃ F ₇ OCH ₃ , C ₄ F ₉ OCH
_{3, C 5 F 11 OCH 3} , C 3 F 7 OC 2 H 5, C 4 F 9
OC ₂ H ₅ and C ₅ F ₁₁ OC ₂ H ₅ can be exemplified. Among them, nonafluoromethoxybutane (C ₄ F ₉ O
CH ₃ ) is preferred.

Hydrofluorocarbons are represented by the general formula: C _p H _q F _{2p + 2-q} , C _p H
_{q F 2p-q, C p} H q F 2p-2- q (p is from 1 to 10, q is 1 represents an integer of 20) can be used compounds represented by, in particular, C ₅ H ₁ F ₁₁ ,
_{C 5 H 2 F 8, C} 5 H 2 F 10, C 5 H 3 F 9, C 4 H 3
F ₇ and C ₆ H ₂ F ₁₂ can be exemplified. Among them, decafluoropentane (C ₅ H ₂ F ₁₀ ) is preferred.

Examples of fluoroiodide carbons include CF ₃ CF ₂ CF ₂ I, CH ₂ FI, CF
₃ CF ₂ CF ₂ CF ₂ I, CF ₂ I ₂ , CF ₃ (C
F ₂ ) ₄ I and the like.

The perfluorocarbons include, for example, perfluoroalkanes represented by the general formula: C _n F _{2n + 2} (where n is an integer of 4 to 12),

Embedded image And perfluoropolyether represented by (C ₄ F
₉ ) ₃ N, (C ₅ F ₁₁ ) ₃ N, (C ₂ F ₅ ) ₃ N,
(C ₂ F ₅ ) (C ₃ F ₈ ) NF, (CF ₃ ) ₂ NC ₂ F
₅ , (CF ₃ ) ₂ NCF = CF ₂ , (CF ₃ ) ₂ NCF
₂ CF ₂ H, (CF ₃ ) ₂ NCF ₂ CF ₃ , C ₅ F ₁₀
Perfluoroamine which generates a trifluoro radical such as N ₂ F ₅ , or C ₅ F ₁₁ NO, OC ₄ F ₈ NCF ₂ B
and perfluoromorpholine such as r. Among them, perfluoro N-methylmorpholine (C ₅ F ₁₁ NO)
Is preferred.

Further, there may be mentioned a perfluoroether compound represented by the general formula: (C _x F _{2x + 1} ) ₂ O (where x represents an integer of 1 to 7).

Hydrofluoroethers and hydrofluorocarbons have higher solubility with non-volatile substances and polyorganosiloxanes than perfluorocarbons, so that mixed solvents can be easily prepared. Further, it has a feature that it is compatible with more washing solvents used in the previous step and has a wide application range. The mixing ratio of these fluoro compounds is 10
It is preferred to be in the range of 99% by weight. When the content is 10% by weight or more, a sufficient vapor amount of the fluoro compound can be obtained. It is preferably at least 40% by weight, more preferably at least 60% by weight.

As described above, the non-volatile substance (B) does not cause a chemical change with the solvent, but has a boiling point higher than that of the low-molecular-weight fluoro compound. It is preferable that the compound be easily soluble in the fluoro compound, and the smaller the molecular weight, the more efficiently the boiling point can be increased with a smaller amount. For example, hydrocarbons having a boiling point of 130 ° C. or more, such as decane and isododecane, can be mentioned.

As a polyorganosiloxane having a boiling point of 130 ° C. or more, a general formula:

Embedded image (Wherein R is the same or different, substituted or unsubstituted 1
A divalent organic group, 1 represents an integer of 1 to 5), and a linear polydiorganosiloxane represented by the general formula:

Embedded image (Wherein R is the same or different, substituted or unsubstituted 1
Valent organic group, m represents an integer of 3 to 7), and specifically, a cyclic polydiorganosiloxane represented by the following formula:
Linear polydiorganosiloxanes such as octamethyltrisiloxane, decamethyltetrasiloxane and dodecamethylpentasiloxane; and hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane. And cyclic polydiorganosiloxanes. Among them, octamethyltrisiloxane is preferable.

Specific examples of the aromatic hydrocarbon having a melting point of 50 ° C. or higher include naphthalene, anthracene, P-dichlorobenzene and the like.

Specific examples of ketones having a boiling point of 130 ° C. or higher include camphor.

As a perfluoropolyether having a boiling point of 130 ° C. or higher,

Embedded image And further, as a specific example,

Embedded image Is mentioned.

The mixing ratio of these nonvolatile substances is preferably in the range of 1 to 90% by weight. By setting the nonvolatile substance to 1% by weight, the boiling point of the fluoro compound can be substantially increased. Preferably 5% to 60% by weight
, More preferably in the range of 10% to 30% by weight. As the non-volatile substance, the smaller the molecular weight, the greater the proportion of addition that can be compatible with fluorocarbons.

Examples of the volatile polyorganosiloxane (C) having a boiling point of less than 130 ° C. include hexamethyldisiloxane, and the mixing ratio of the volatile polyorganosiloxane is in the range of 1 to 60% by weight. preferable. Although it varies slightly depending on the type of fluoro compound,
When the content is 0% by weight or less, the flammability of the volatile polyorganosiloxane itself can be suppressed. It is preferably at most 30% by weight, more preferably at most 20% by weight. For example, a fluoro compound having a boiling point of about 60 ° C. exhibits flame retardancy at 25% by weight or less, and a fluoro compound having a boiling point of about 80 ° C. exhibits flame retardancy at 15% by weight or less.
The lower boiling fluoro compounds can be mixed with volatile polyorganosiloxanes.

The essential condition of the present invention is that the constituent fluorocarbons and the non-volatile substance are completely compatible at room temperature or at least near the boiling point of the fluorocarbons. The smaller the molecular weight of the non-volatile substance, the greater the proportion of the non-volatile substance compatible with the fluorocarbons. Non-volatile substances other than perfluoroether are easily soluble in hexamethyldisiloxane, which is a volatile polyorganosiloxane, but are hardly soluble in fluorocarbons. Therefore, hexamethyldisiloxane functions as a “binding agent” for compatibilizing fluorocarbons and non-volatile substances.

Although the substance used in the present invention has been described above, the boiling point of the non-combustible or flame-retardant steam cleaning composition of the present invention is preferably 55 ° C. or more and 130 ° C. or less. The temperature is more preferably from 60 ° C to 110 ° C, and even more preferably from 70 ° C to 100 ° C.

Further, the solvent used before performing the steam cleaning with the non-flammable or flame-retardant steam cleaning composition of the present invention will be mentioned here.

As the solvent used in the pre-step of the steam cleaning, a solvent having a high dissolving power and having high compatibility with the nonflammable or flame-retardant steam cleaning composition of the present invention is used. Specific examples include organic solvents such as Tert-butanol, isopropyl acetate, and ethyl lactate. Usually, the solvent used in these pre-processes may be heated to room temperature or to increase the cleaning effect.

According to the present invention, the amount of condensate condensed on the surface of the cleaning object is increased by increasing the boiling point in order to enhance the effect of the steam cleaning. The relationship between the boiling point and the liquid condensation amount will be described.

The temperature of the component surface and the amount of liquid condensed during steam cleaning are as follows: condensed amount Y (g) = (Bp−Wt) × G × Cw / P (where Bp is the boiling point (° C.) of the steam cleaning agent). , Wt is the initial temperature of the part (° C.), G is the weight of the part (g), Cw is the specific heat of the part (cal / g), P is the latent heat of vaporization of the steam cleaner (c).
al / g)).

The parts will increase in temperature due to being exposed to the steam cleaner atmosphere. Assuming that Cw is constant irrespective of the temperature change, the liquid condensation amount Y can be regarded as a function of Wt. When Wt rises from room temperature Rt to the boiling point Bp of the steam cleaner, the total amount of condensation is

(Equation 1) It is represented by From this equation, the total condensed amount until the component finally rises to the boiling point temperature and the condensation ends is proportional to the square of the difference between the boiling point of the steam cleaner and the initial temperature (Rt) of the component. Recognize.

If the effect of steam drying of the rinsing liquid is not considered in order to obtain good drying properties by steam cleaning, if the rinsing liquid adhering to the parts during the steam cleaning is completely replaced with a steam cleaning agent. Good. Therefore, the total amount of condensate required for that purpose is determined by the amount of the rinsing liquid adhering to the part by X
(G), Yt / Cy> A · X / Cx (where Yt is the total condensed amount, Cy is the specific gravity of the steam cleaner,
Cx is the specific gravity of the rinsing liquid, and A is a real number of 1 or more).

For example, when a part having a weight of 10 g, a specific heat of 1 cal / g, a latent heat of vaporization of 30 cal / g, and an initial temperature of 25 ° C. is steam-cleaned with a fluoro compound having a boiling point of 60 ° C., the liquid condensed amount is calculated by the following equation. , 204.1 g. In addition, when the same component is subjected to steam washing with a fluoro compound having a boiling point of 65 ° C., the liquid condensed amount is 266.6 g. Therefore, when the boiling point rises by 5 ° C., the amount of liquid condensed on the component surface increases by 30.6% by weight. By increasing the amount of liquid condensed in this manner, the liquid replacement property by the steam cleaning agent is increased, and good steam cleaning properties can be obtained.

However, the required amount of condensation with respect to the amount of the rinsing agent adhering to the part greatly depends on the shape of the part. The higher the boiling point, the more the amount of condensation increases by the square, so that the shape of the component tends to have no effect.

The non-flammable or flame-retardant steam cleaning composition of the present invention may contain a polar solvent, a stabilizer and the like.

The polar solvent preferably used in the present invention includes, for example, 1-butanol, 2-butanol, isobutyl alcohol, tert-butanol,
-Pentanol, 2-pentanol, 3-pentanol, 2-methyl-1-butanol, isopentyl alcohol, methyl propionate, ethyl propionate, methyl ethyl ketone, 2-pentanone, 3-pentanone, 2
-Hexanone, acetic acid, ethyl acetate, propyl acetate, isopropyl acetate, isobutyl acetate, sec butyl acetate, methyl isobutyl ketone, formic acid, propyl formate, n-butyl formate, isobutyl formate, propylene glycol monomethyl ether, propylene glycol monoethyl ether, triethyl Fluoroethanol and the like.

The composition ratio of the polar solvent is not particularly limited, but is 0.1 to 10,000 parts by weight or less, preferably 1,000 parts by weight or less based on 100 parts by weight of the nonflammable or flame-retardant steam cleaning composition. , More preferably 100 parts by weight or less. The above-mentioned polar solvents can be added alone or in combination of two or more.

The stabilizers that can be added to the nonflammable or flame retardant steam cleaning composition of the present invention include, for example, epoxides such as glycidol and cyclohexene oxide.
ethers such as 1,4-dioxene and 1,3,5-trioxene; unsaturated hydrocarbons such as 1-pentene and 1-hexene; acrylates such as methyl acrylate and ethyl acrylate; . These stabilizers are preferably added at a ratio of about 0.1 to 5% by weight based on the total weight of the detergent. The above stabilizers can be added alone or in combination of two or more.

The non-combustible or flame-retardant steam cleaning composition of the present invention can be applied to various objects to be cleaned, and the material of the object to be cleaned is not particularly limited.
Ceramics, plastic materials and the like can be mentioned. For example, metals and semi-metals include iron, aluminum, silicon, copper, stainless steel, etc., ceramics include silicon nitride, silicon carbide, aluminum oxide, glass, porcelain, etc., and plastics include polyamide, polyimide, epoxy, polyolefin, and polyester. , An acrylic resin and the like, and a composite material thereof may be used.
Specific examples include electronic parts such as printed circuit boards and mounting parts, electric parts, semiconductor parts, metal parts, surface treatment parts, precision equipment parts, optical parts, glass parts, ceramic parts, plastic parts, and the like. The heat-resistant temperature of the object to be cleaned is preferably 80 ° C. or higher. For example, the heat-resistant temperature of metal parts, wafers, masks, and glass lenses is 13 ° C.
0 ° C. and the heat resistant temperature of the mounting board is 110 ° C. The heat resistant temperature of the object to be cleaned is more preferably 70 ° C. or higher, and for example, the heat resistant temperature of plastics and elastomers is 70 ° C.

[0050]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to examples, but the effects thereof will be clarified. However, the present invention is not limited to the description of these examples.

Examples 1 to 11 and Comparative Examples 1 to 3 First, the boiling points of fluorocarbons as pure solvents were measured using a thermometer. The results are shown in the rightmost column of Table 1.

Next, a known amount of a non-volatile substance was mixed with the pure solvent, and the boiling point was measured again using the same thermometer. The boiling point increase ΔT of each solvent was determined, and the compatibility of each component from room temperature to the boiling point was visually evaluated. Further, the flammability was evaluated by using a tag closed type and a Cleveland open type flash point measuring device. Table 1 shows the results.
Shown in

[0053]

[Table 1] In Examples 1 to 9 of the present invention, each component showed compatibility at room temperature. Examples 10 and 11 showed compatibility near the boiling point. These examples exhibited nonflammability or flame retardancy, and the boiling point increased by ΔT. In Comparative Examples 1 and 2, even at the boiling point, each component did not show compatibility and the boiling point did not rise. In Comparative Example 3, although the components were compatible and the boiling point increased, the flash point was confirmed by the closed tag type and the Cleveland release type.

Examples 12 and 13 and Comparative Examples 4 to 6 A copper metal part 20P (envelope part) immersed in a working oil G-6040 (trade name, manufactured by Nipponkoh) was used as an object to be cleaned and washed with a polar solvent. After performing, the state after cleaning was evaluated using the steam cleaning agent of the present invention. The washing was performed according to the following procedure. That is, first, the object to be washed is washed at about 30 ° C. while irradiating ultrasonic waves in the first washing tank containing the polar solvent, and then the liquid composition of Example 12 is heated and boiled in the second washing tank. The object to be cleaned was dried by exposing the object to be cleaned to the generated steam.

In the above process, the amount of liquid condensed by the metal component 20P in the vapor tank having the liquid composition of Example 12 was received using a glass beaker instead of the condensed liquid receiving tray, and the liquid condensed amount was measured. Further, a surface state evaluation test after cleaning was performed. The test method is expressed by the number of envelope parts where stains due to residual machine oil or detergent are observed. A value of 0/20 indicates that no stain was observed. Further, the amount of oil remaining on the surface was measured. As a measuring method, two samples after washing were arbitrarily sampled and 300 m
The remaining oil was extracted with 1 liter of carbon tetrachloride.
It was quantified using a BA oil concentration meter OCMA-220. Example 13 was similarly evaluated. Table 2 shows the measurement results. Further, as a comparative example of the present invention, a detergent containing only nonafluoromethoxybutane (Comparative Example 4),
Decafluoropentane-only detergent (Comparative Example 5), 1,
Using 1,1-trichloroethane (Comparative Example 6), cleaning was carried out in the same manner as in the above-described example, and the evaluation was performed.
Table 2 also shows the results.

[0056]

[Table 2] As is clear from the measurement results shown in Table 2, the above Example 1
It can be seen that the steam cleaning by 2 and 13 is excellent in cleaning property and drying property, and more excellent in cleaning property and drying property than the single cleaning agents of Comparative Examples 4 and 5. Also 1,1,1
-It can be seen that it exhibits excellent washing and drying properties equal to or higher than that of trichloroethane.

[0057]

As described above, according to the non-flammable or flame-retardant steam cleaning composition of the present invention, the ozone layer is not destroyed, it is chemically stable, and it penetrates into the gaps of fine parts. In addition, by adding a non-volatile substance to the low steam cleaning effect due to the low boiling point of fluorocarbons excellent in quick drying, the effect of high steam cleaning performance can be obtained.

[0058]

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Minoru Inada, Minoru, 8-8, Shinsugita-cho, Isogo-ku, Yokohama-shi, Kanagawa Prefecture Inside the Toshiba Yokohama Works Co., Ltd. (72) Shigeo Yamafuji 6-2-1, Roppongi, Minato-ku, Tokyo Toshiba Inside Silicon Corporation (72) Inventor Nobuhiro Saito 6-31 Roppongi, Minato-ku, Tokyo Inside Toshiba Silicon Corporation

Claims (15)

[Claims] 1. A mixture of 10 to 99% by weight of a fluorocarbon (A) and 1 to 90% by weight of a non-volatile substance (B), wherein said mixture is completely compatible at room temperature or at least said fluorocarbon A non-flammable or flame-retardant steam cleaning composition characterized in that it is compatible at a temperature near the boiling point of the compounds to form a homogeneous solution. 2. The non-combustible or flame-retardant steam cleaning composition according to claim 1, wherein 1 to 60% by weight of a volatile polyorganosiloxane (C) having a boiling point of less than 130 ° C. is mixed with the mixture. Non-flammable or flame-retardant steam cleaning composition. 3. The non-flammable or flame-retardant steam cleaning composition according to claim 1, wherein the fluorocarbons (A) are hydrofluoroethers. Stuff. 4. The non-combustible or flame-retardant steam cleaning composition according to claim 1, wherein the fluorocarbons (A) are hydrofluorocarbons. . 5. The non-flammable or flame-retardant steam cleaning composition according to claim 1, wherein the fluorocarbons (A) are perfluorocarbons. . 6. The non-flammable or flame-retardant steam cleaning composition according to claim 1, wherein the non-volatile substance (B) is a non-volatile polyorganosiloxane having a boiling point of 130 ° C. or higher. Or flame retardant steam cleaning compositions. 7. The non-flammable or flame-retardant steam cleaning composition according to claim 3, wherein the hydrofluoroether is nonafluoromethoxybutane. . 8. The non-flammable or flame-retardant steam cleaning composition according to claim 4, wherein the hydrofluorocarbon is decafluoropentane. 9. The non-flammable or flame-retardant steam cleaning composition according to claim 5, wherein the perfluorocarbons are perfluoro-N-methylmorpholine. . 10. The non-flammable or flame-retardant steam cleaning composition according to claim 6, wherein the nonvolatile polyorganosiloxane has a general formula: (Wherein R is the same or different, substituted or unsubstituted 1
A divalent organic group, 1 represents an integer of 1 to 5), and a linear polydiorganosiloxane represented by the general formula: (Wherein R is the same or different, substituted or unsubstituted 1
At least one selected from cyclic polydiorganosiloxanes represented by the following formula:
A non-flammable or flame-retardant steam cleaning composition comprising at least one selected from the group consisting of low molecular weight polyorganosiloxanes. 11. The non-flammable or flame-retardant steam cleaning composition according to claim 10, wherein the non-volatile polyorganosiloxane is hexamethylcyclotrisiloxane. Composition. 12. The non-flammable or flame-retardant steam cleaning composition according to claim 1, wherein the non-volatile substance (B) is an aromatic hydrocarbon having a melting point of 50 ° C. or higher. Flame retardant steam cleaning composition. 13. The non-flammable or flame-retardant steam cleaning composition according to claim 1, wherein the non-volatile substance (B) is a perfluoropolyether having a boiling point of 130 ° C. or higher. Or a flame retardant steam cleaning composition. 14. The non-flammable or flame-retardant steam cleaning composition according to claim 1, wherein the non-volatile substance (B) is a ketone having a boiling point of 130 ° C. or more. Steam cleaning composition. 15. The non-flammable or flame-retardant steam cleaning composition according to claim 1, wherein the non-flammable or flame-retardant vapor cleaning composition has a boiling point of 55.
A non-flammable or flame-retardant steam cleaning composition having a temperature of not lower than 130 ° C and not higher than 130 ° C.