JPH10212498A - Noninflammable industrial cleanser composition and washing by using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a noninflammable industrial cleanser composition having no problem such as environmental disruption, excellent in detergent properties and safety, and useful for an engineering and metalworking industry field, etc., by including specific proportions of a specified alkyl ether-based solvent and a fluorine-based solvent. SOLUTION: This noninflammable industrial cleanser composition consists essentially of (A) at least one of an alkyl ether-based solvent of diethylene glycol of formula I (R1 is a 1-4C hydrocarbon) and an alkyl ether-based solvent of dipropylene glycol of formula II (R2 is a 1-4C hydrocarbon) and (B) a fluorine- based noninflammable solvent such as hydrofluorocarbon and hydrofluoroether and the formulating weight ratio of components A to B is within a range of (15-85) to (85-15). A material to be washed is washed with the noninflammable industrial cleanser composition and preferably rinsed by using the component B alone.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to processing oils, fluxes and waxes, dusts and fingerprints, metal powders and resins which are adhered in various parts manufacturing and processing steps in the machine metal industry, electric and electronic industry, optical machine industry, plastic industry and the like. General cleaning of powder and the like, removal of dirt mainly in gaps,
The present invention relates to a non-aqueous non-flammable industrial cleaning composition effective for maintenance cleaning of the above-mentioned parts and the like.

[0002]

2. Description of the Related Art Conventionally, processing oil adhered to various industrial parts,
As cleaning agents used for cleaning fluxes, waxes, dust, fingerprints, metal powders, resin powders, etc., chlorofluorocarbons represented by CFC-113, hydrochlorofluorocarbons represented by HCFC-225, 1,1,1
Non-flammable solvents such as 1-trichloroethane and methylene chloride, such as chlorinated solvents, flammable solvents such as alcohols and petroleum hydrocarbons, and water-based cleaning agents depend on factors such as safety and cleaning purpose. They were properly used.

[0003]

However, among the above non-flammable solvents, chlorofluorocarbon and 1,1 are preferable.
The production of 1,1-trichloroethane as an ozone depleting substance has already been completely abolished, and the use of hydrochlorofluorocarbon will be restricted in the future.

On the other hand, methylene chloride among the above non-flammable solvents is known to be toxic to the human body.
Further, the above-mentioned flammable solvents have a problem that a great deal of labor is required for safety measures in handling. Further, although the above-mentioned aqueous cleaning agents are excellent in safety and contamination selectivity, the cleaning effect on contaminants attached to the gap is not so high, and there is a concern that the presence of water may adversely affect the material. .

The present invention has been made in view of the above-mentioned circumstances, and is intended to provide a non-flammable industrial detergent composition which is safe and free from environmental destruction at the time of use, and has excellent detergency. It is an object of the present invention to provide an efficient cleaning method using the same.

[0006]

In order to achieve the above object, the present invention provides a non-flammable detergent composition comprising the following components (A) and (B) as essential components, And the blending weight ratio of the components (B) [(A) / (B)]
A first aspect is a non-aqueous non-flammable industrial cleaning composition set in the range of (A) / (B) = (15-85) / (85-15).

(A) an alkyl ether solvent of diethylene glycol represented by the following general formula (1):
At least one of alkyl ether solvents of dipropylene glycol represented by the following general formula (2).

Embedded image R ₁ O (CH ₂ CH ₂ O) ₂ H (1) [In the above formula (1), R ₁ is a hydrocarbon group having 1 to 4 carbon atoms. ]

Embedded image (B) a fluorine-based nonflammable solvent.

Further, the present invention provides a method for cleaning a surface of a substance to be cleaned using the above-mentioned non-flammable industrial detergent composition, and further comprising only the component (B) in the above-mentioned non-flammable industrial detergent composition. A second aspect of the present invention is a method of rinsing the surface of the substance to be cleaned by using the method.

The inventor of the present invention has solved the problems of various solvents conventionally used as industrial cleaning agents, and has achieved easy and safe handling of all solvents and any contaminants remaining on the surface of the material to be cleaned. A series of studies have been conducted to obtain an industrial detergent that can quickly and effectively wash the water. As a result, at least one of the two types of solvents, that is, at least one of the glycol ether solvents represented by the general formulas (1) and (2) [component (A)] and the fluorine-based nonflammable solvent [(B) The present invention has been found that the intended purpose is achieved when a mixed solvent prepared by mixing the above components at a specific ratio is used as an essential detergent component.

Further, in the cleaning using the non-flammable industrial cleaning composition of the present invention, first, the substance to be cleaned is cleaned using the non-flammable industrial cleaning composition,
The substance to be cleaned is rinsed using only the fluorinated nonflammable solvent [component (B)] in the non-flammable industrial cleaning composition. Therefore, the contaminants remaining in the substance to be cleaned and the non-flammable industrial detergent composition can be easily removed. Moreover, following the cleaning using the non-flammable industrial cleaning composition, the fluorine-based nonflammable solvent [component (B)] is used.
Since the rinsing is performed using only the rinsing, the subsequent drying step can be omitted, and the efficiency of the cleaning operation can be increased.

In the non-flammable industrial detergent composition of the present invention, the fluorine-containing nonflammable solvent [component (B)] is used.
For example, a hydrofluorocarbon or a hydrofluoroether is used.

[0012]

Next, an embodiment of the present invention will be described in detail.

The non-flammable industrial detergent composition of the present invention is obtained using a specific glycol ether solvent (component A) and a fluorine-based nonflammable solvent (component B).

The specific glycol ether solvent (A)
Component) is a solvent component comprising at least one of an alkyl ether solvent of diethylene glycol represented by the following general formula (1) and an alkyl ether solvent of dipropylene glycol represented by the following general formula (2): It is.

[0015]

Embedded image R ₁ O (CH ₂ CH ₂ O) ₂ H (1) [In the above formula (1), R ₁ is an alkyl group having 1 to 4 carbon atoms. ]

[0016]

Embedded image

Specific examples of the alkyl ether solvent of diethylene glycol represented by the general formula (1) include diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monoisopropyl ether, diethylene glycol mononormal propyl ether, and diethylene glycol monoisobutyl. Ether and diethylene glycol mono-normal butyl ether.

The alkyl ether solvents of dipropylene glycol represented by the above general formula (2) include:
Specific examples include dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, dipropylene glycol monoisopropyl ether, dipropylene glycol mononormal propyl ether, dipropylene glycol monoisobutyl ether, and dipropylene glycol mononormal butyl ether.

The alkyl ether solvent of diethylene glycol represented by the general formula (1) and the alkyl ether solvent of dipropylene glycol represented by the general formula (2) may be used alone or in combination of two or more. Can be Further, it is desirable that the glycol ether solvent as the component A shows at least a tendency to be water-soluble at room temperature.

In the above general formulas (1) and (2)
Of R₁And R_TwoIs, as described above, a carbon number of 1 to
It must be an alkyl group of 4. That is, R₁You
And R _TwoIs an alkyl group having 5 or more carbon atoms.
The desired cleaning performance cannot be obtained in the cleaning composition.
Because it is. Further, the dimer represented by the general formula (1)
Other than alkyl ethers of ethylene glycol
For example, monoethylene glycol other than diethylene glycol
Are concerned about their safety to the human body.
Also, triethylene glycol or the above-mentioned general formula (2)
Alkyl ethers of dipropylene glycol
Outside monopropylene glycol or tripropylene glyco
The desired cleaning performance cannot be obtained with
No.

Next, as the fluorine-based nonflammable solvent (component B) used together with the specific glycol ether-based solvent as the component A, for example, hydrofluorocarbon, hydrofluoroether and the like are used. Examples of the hydrofluorocarbon include decafluoropentane, specifically, Vertrel XF manufactured by DuPont-Mitsui Fluorochemicals, and an azeotropic mixture thereof. Further, as the hydrofluoroether, 1
-Methoxynonafluorobutane, 1-ethoxynonafluorobutane and the like. Specifically, the above-mentioned 1-methoxynonafluorobutane is H-manufactured by Sumitomo 3M Limited.
As FE-7100, HFE-7200 manufactured by Sumitomo 3M Ltd. is used as 1-ethoxynonafluorobutane, and further, an azeotrope thereof may be mentioned.

The specific glycol ether solvent (A)
(A) / (B) = (15-8)
5) It is necessary to set in the range of / (85-15). Particularly preferably, (A) / (B) = (30-70) / (70
To 30). That is, when the blending weight ratio of the specific glycol ether-based solvent (component A) is less than 15% by weight (the component B exceeds 85% by weight), the cleaning performance is poor, and the blending weight of the specific glycol ether-based solvent (component A) is low. The ratio is 8
If the content exceeds 5% by weight (the component B is less than 15% by weight), the cleaning properties of the details such as gaps between the substances to be cleaned will be deteriorated.

As described above, in the non-flammable industrial detergent composition of the present invention, two components of the above-mentioned specific glycol ether solvent (component A) and fluorine-based nonflammable solvent (component B) are essential, Moreover, if the configuration of the two deviates from the above-mentioned specific ratio, a good balance between general cleaning performance and cleaning performance for gaps cannot be obtained, and safety against flammability and various types of pollutants. The effect of general-purpose detergency cannot be obtained.

The non-flammable industrial detergent composition of the present invention may contain other components in addition to the above-mentioned components A and B as long as they do not depart from the characteristic constitution of the present invention and do not impair the effects thereof. Depending on the other additives, for example, non-polar solvents such as petroleum hydrocarbons, polar solvents such as N-methyl-2-pyrrolidone and ethyl lactate, alkanolamines, various stabilizers and the like may be appropriately added. It is possible.

The non-flammable industrial cleaning composition of the present invention comprises:
It is obtained by blending the above-mentioned essential components A and B at a predetermined blending ratio, blending other additives as needed, and mixing them.

The cleaning using the non-flammable industrial cleaning composition of the present invention is performed as follows. First, a substance to be cleaned is cleaned using the non-flammable industrial cleaning composition of the present invention (first step). Next, the substance to be cleaned is further rinsed using only the component (B) in the non-flammable industrial cleaning composition (second step). By this second step,
The contaminants remaining in the substance to be cleaned and the non-flammable industrial cleaning composition adhering in the first step are effectively removed. The operation method in the above-mentioned washing (both the first step and the second step) is not particularly limited, and various conventionally known washing methods, for example, immersion washing method, stirring washing method, ultrasonic washing method, brush washing method Any washing operation method can be applied. Further, when the non-flammable industrial detergent composition is provided for such a washing operation, it is preferable to use the composition after heating to, for example, about 40 to 50 ° C. from the viewpoint of the washing effect.

As described above, in the cleaning method using the non-flammable industrial cleaning composition of the present invention, various contaminants adhering to various parts such as glass, resin, and metal can be safely and effectively cleaned. Can be.

Next, examples will be described together with comparative examples.

[0029]

Examples 1 to 10 and Comparative Examples 1 to 10 Tables 1 to 3 below
The components shown in Table 1 were mixed in the proportions shown in the same table to prepare a detergent.

[0030]

[Table 1]

[0031]

[Table 2]

[0032]

[Table 3]

The cleaning performance and the rinsing performance of each of the thus obtained cleaning agents of Examples and Comparative Examples were measured and evaluated according to the following methods. The results are shown in Table 4 below.

[Cleaning Evaluation-1] First, an aluminum part having eight blind holes was immersed in oil-based cutting oil, and subjected to a contamination treatment at 50 ° C. for 30 minutes using a reduced-pressure drier to prepare a test body for cleaning evaluation. did. On the other hand, each cleaning agent was collected in a 1-liter glass container and adjusted to a temperature of 50 ° C. Next, the test body for cleaning evaluation was immersed in the cleaning agent and washed with stirring for 3 minutes.

After performing the above-described washing operation, the reduced-pressure drier (1
(00 ° C.) for 120 minutes to dry and remove the detergent components.
As a result, the amount of oily cutting oil remaining in the cleaning evaluation specimen was measured by infrared spectrophotometry and evaluated according to the following criteria.

[Standard] ：: Residual oil-based cutting oil is less than 20 μg / piece or less ○: Residual oil-based cutting oil is less than 20 to 50 μg / piece or less △: Residual oil-based cutting oil is less than 50 to 200 μg / piece or less ×: Residual oiliness 200μg / piece or more of cutting oil

[Cleaning Evaluation-2] An oil-based rosin flux was applied to the surface of a clean glass test piece so as to have a thickness of 50 μm, and a clean glass-made test piece was placed on the oil-based rosin flux applied surface. After being clamped and fixed with clips, a heat treatment was performed at 60 ° C. for 10 minutes to prepare a test body for cleaning evaluation.

On the other hand, each cleaning agent was collected in a 300 ml glass container and adjusted to a temperature of 50 ° C. Next, the test body for cleaning evaluation was immersed in the above-mentioned cleaning agent, and 40 kHz × 300
An ultrasonic cleaning treatment was performed at W for 3 minutes.

After the above ultrasonic cleaning treatment, the detergent components were dried and removed in a vacuum dryer (100 ° C.) for 60 minutes. As a result, the amount of oil-based rosin flux remaining in the test specimen for cleaning evaluation was measured by ultraviolet spectrophotometry, and evaluated according to the following criteria.

[Criteria] 残存: Residual flux is less than 5 μg / sheet or less ○: Residual flux is less than 5 to 10 μg / sheet or less △: Residual flux is less than 10 to 50 μg / sheet or less ×: Residual flux is 50 μg / sheet or more

[Evaluation of Rinsing] A clean glass test piece was immersed in the above-mentioned cleaning solution, taken out, and then placed on a clean glass test piece. A test body was prepared. On the other hand, Bertrel XF (manufactured by DuPont Fluorochemicals, Mitsui) was placed in a cooling tube-attached container heated to 65 ° C., and the above-described test piece for rinsing evaluation was immersed in the container for 1 minute. Was subjected to ultrasonic treatment. Further, the test specimen was held on the liquid interface for another 5 minutes.

After performing the above operation, a vacuum dryer (105
(° C.) for 30 minutes. As a result, the amount of each detergent component remaining in the test specimen for rinsing evaluation was measured by infrared spectrophotometry and evaluated according to the following criteria.

[Criteria] ：: Residual detergent less than 2 μg / sheet or less ：: Residual detergent less than 2-5 μg / sheet or less △: Residual detergent less than 5-20 μg / sheet or less ×: Residual detergent 20 μg / More than

[0044]

[Table 4]

From the results shown in Table 4, it is clear that all the examples exhibited excellent cleaning performance in all of the cleaning evaluations-1 and 2, and the rinsing evaluation. In contrast, A
In Comparative Examples 5 and 6, in which the mixing ratio of the component and the component B was out of the specific range of the present invention, better results were obtained with respect to the cleaning performance and the rinsing performance than the other comparative examples. In comparison, it can be seen that the cleaning / rinsing performance is clearly inferior. And it is clear that the remaining comparative examples are significantly inferior in cleaning and rinsing performance as compared with the examples.

[0046]

As described above, the non-flammable industrial detergent composition of the present invention comprises the specific glycol ether solvent (component A) and the fluorine-based nonflammable solvent (component B) in a specific ratio. The essential component is the detergent component blended in the above. For this reason, it is safe to handle without exhibiting flammability, and is excellent in cleaning properties for all contaminants, particularly for gaps.

In the cleaning using the non-flammable industrial cleaning composition of the present invention, first, the substance to be cleaned is cleaned using the non-flammable industrial cleaning composition, and
The substance to be cleaned is cleaned using only the fluorinated nonflammable solvent (component B) in the non-flammable industrial cleaning composition. Therefore, the contaminants remaining in the substance to be cleaned and the non-flammable industrial cleaning composition can be easily removed. Moreover, subsequent to the cleaning using the non-flammable industrial cleaning composition, the rinsing using only the fluorine-based non-flammable solvent (component B) is performed, so that a subsequent drying step can be omitted. Higher efficiency of the cleaning operation is achieved.

In the non-flammable industrial detergent composition of the present invention, hydrofluorocarbon or hydrofluoroether is preferably used as the fluorine-based nonflammable solvent (component B).

Continued on the front page (51) Int.Cl. ⁶ Identification code FI C11D 7:26 7:28 7:30)

Claims (4)

[Claims] 1. A non-flammable detergent composition comprising the following components (A) and (B) as essential components, wherein the compounding weight ratio of the components (A) and (B) [(A) / (B) )〕But,
(A) / (B) = (15-85) / (85-15) A non-aqueous non-flammable industrial detergent composition characterized by the following: (A) At least one of an alkyl ether solvent of diethylene glycol represented by the following general formula (1) and an alkyl ether solvent of dipropylene glycol represented by the following general formula (2). Embedded image R ₁ O (CH ₂ CH ₂ O) ₂ H (1) [In the above formula (1), R ₁ is a hydrocarbon group having 1 to 4 carbon atoms. [Chemical formula 2] (B) a fluorine-based nonflammable solvent. 2. The non-flammable industrial detergent composition according to claim 1, wherein the fluorinated nonflammable solvent as the component (B) is a hydrofluorocarbon. 3. The non-flammable industrial detergent composition according to claim 1, wherein the fluorine-based nonflammable solvent as the component (B) is hydrofluoroether. 4. A non-flammable industrial detergent composition according to claim 1, wherein said non-flammable industrial detergent composition is used to wash a substance to be cleaned, and further, said non-flammable industrial detergent composition. A cleaning method comprising rinsing the substance to be cleaned using only the component (B) in the object.