JP2010189635A - Stock solution for detergent composition, detergent composition, and washing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stock solution for a detergent composition to provide a detergent composition excellent in washability, the detergent composition using the same and a washing method while considering an environmental and safety problem. <P>SOLUTION: The stock solution for the detergent composition for washing an article to be washed in a state of white turbidness with the predetermined amount of water later added includes the predetermined amount of a hydrocarbon compound or an aromatic compound having an SP value of 6.5 to 12 as a first organic solvent, a nitrogen-containing compound or a sulfur-containing compound having an SP value of 8 to 15 as a second organic solvent, and an ester compound having an SP value of 8 to 12 as a third organic solvent respectively. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a stock solution for a detergent composition, a detergent composition, and a washing method, and in particular, a detergent composition having excellent detergency when a predetermined amount of water is added afterwards while considering environmental safety. The present invention relates to a stock solution for a cleaning composition, a cleaning composition using the same, and a cleaning method.

Conventionally, a cleaning composition comprising a predetermined amount of water or an amine compound with respect to a glycol compound has been disclosed because there is little occurrence of environmental problems in the cleaning of flux residue, solder paste, or ink. (For example, refer to Patent Document 1 and Patent Document 2).
More specifically, Patent Document 1 discloses that two or more kinds of specific glycol ether compounds (25 to 45 wt% and 5 to 25 wt%) having different water solubility and a specific amine compound (0.005 to 1 wt%). %) And water (29 to 69.995% by weight).
Patent Document 2 discloses polypropylene glycol monoalkyl ethers (10 to 70% by weight), polyethylene glycol monoalkyl ethers (15 to 80% by weight), alkanolamines (5 to 15% by weight), and water. (5 to 10% by weight).

Moreover, the detergent composition comprised including water and an ester compound with respect to the glycol compound is disclosed (for example, refer patent document 3 and patent document 4).
More specifically, Patent Document 3 is a cleaning composition comprising glycol ether, glycol ether acetate, dibasic acid ester, N-methylpyrrolidone, benzyl alcohol, water, and the like.
Patent Document 4 is a cleaning composition comprising acetoacetic ester and glycol diester, or any one ester compound, propylene glycol monomethyl ether, and the like.

JP-A-9-59688 Japanese Patent Laid-Open No. 6-49497 Japanese Patent Laid-Open No. 9-194892 JP 2005-120389 A

However, the cleaning compositions disclosed in Patent Documents 1 to 4 are all uniform compositions, have a relatively low water content, and are not only poor in environmental safety and handling properties, but also in poor cleaning properties. It was observed.
On the other hand, in the cleaning compositions disclosed in Patent Documents 1 to 4, when the water content was increased in order to improve environmental safety and handleability, a new problem was observed that the cleaning performance was further lowered.
Furthermore, in the cleaning composition disclosed in Patent Documents 1 to 4, the cleaning power is changed by changing the blending ratio of the cleaning composition raw solution and water according to the degree of contamination in the object to be cleaned. The intention was not seen.

Accordingly, the inventors of the present invention have made extensive studies and, as a result, used a plurality of organic solvents of a predetermined type and a predetermined SP value, and constituted a stock solution for a detergent composition in which the blending amount of these organic solvents was limited. As a result, it was found that before a predetermined amount of water was post-added, it was a homogeneous solution, and when a relatively large amount of water was post-added, it showed excellent detergency as a cloudy cleaning composition. The present invention has been completed.
In other words, conventionally, it has been said that a predetermined cleaning power cannot be stably obtained with a white turbid cleaning composition, but according to the present invention, an excellent cleaning power can be obtained even with a white turbid cleaning composition. The present invention has been found and completed.
Therefore, the present invention is a stock solution for a detergent composition that is used by mixing with a predetermined amount of water in cleaning flux residue, solder paste, etc., and is easy to clean while considering environmental safety and handling properties. An object of the present invention is to provide a stock solution for a cleaning composition that is an excellent cleaning composition, a cleaning composition and a cleaning method for cleaning it in a cloudy state using the same.

According to the present invention, it is a stock solution for a cleaning composition for cleaning an object to be cleaned in a cloudy state in a state of containing a predetermined amount of water while being mixed with water,
As the first organic solvent, a hydrocarbon compound or an aromatic compound having an SP value in the range of 6.5 to 12, and
As the second organic solvent, a nitrogen-containing compound or a sulfur-containing compound having an SP value in the range of 8 to 15,
As the third organic solvent, an ester compound having an SP value in the range of 8 to 12,
Including
For 100 parts by weight of the first organic solvent,
The blending amount of the second organic solvent is a value within the range of 5 to 1400 parts by weight,
Provided is a stock solution for a cleaning composition characterized in that the blending amount of the third organic solvent is set to a value within the range of 5 to 1400 parts by weight, and the above-mentioned problems can be solved.

That is, by using a plurality of organic solvents of a predetermined type and a predetermined SP value, and limiting the blending amount of these organic solvents to constitute a stock solution for a detergent composition, Before the addition, the solution is a homogeneous solution, and when a predetermined amount of water is added afterwards, it becomes a white turbid cleaning composition, but can exhibit excellent detergency.
In addition, since such a stock solution for a detergent composition can be used by mixing with a relatively large amount of water, it efficiently provides a detergent composition excellent in environmental safety, handling, and reprocessing. can do.
Furthermore, with such a detergent composition stock solution, the user can change the blending ratio of the detergent composition stock solution and water in accordance with the degree of contamination in the object to be cleaned, etc. In addition, it is possible to quickly provide a cleaning composition having different cleaning properties.
In addition, although the right or wrong of the cloudiness state in a cleaning composition can also be judged sensuously by visual observation, it can be quantitatively determined by the light transmittance of the cleaning composition as described later.

In constituting the stock solution for the cleaning composition of the present invention, the first organic solvent is anisole, furfural, pseudocumene, phenetole, n-decane, limonene, cymene, terpinene, n-paraffin, benzylamine, benzylethyl. At least one hydrocarbon compound or fragrance selected from the group consisting of ether, methylbenzoate, diisoprobenzene, benzyl alcohol, toluidine, N-methylbenzylamine, N, N-dimethylbenzylamine, α-phenylethylamine, and phenethylamine A group compound is preferred.
By using the first organic solvent of this kind, before mixing with a predetermined amount of water, a uniform solution is composed with the second organic solvent and the third organic solvent in a wide temperature range, and When a fixed amount of water is added afterwards, it becomes a white turbid cleaning composition and can exhibit further superior cleaning power.

Further, in constituting the stock solution for the cleaning composition of the present invention, the second organic solvent is 2-ethylhexylamine, monoisopropanolamine, dimethyl sulfoxide, N-methyl-2-pyrrolidone, diethanolamine, N, N-dimethyl. It is preferably at least one nitrogen-containing compound or sulfur-containing compound selected from the group consisting of acetamide.
By using this kind of second organic solvent, phase separation between the first organic solvent and the third organic solvent is effective in a wide temperature range before mixing with a predetermined amount of water. When a predetermined amount of water is added after the formation of a uniform solution, it becomes a white turbid cleaning composition and can exhibit further excellent detergency.

Further, in constituting the stock solution for the cleaning composition of the present invention, the third organic solvent is propylene glycol monomethyl ether acetate, 3-methoxybutyl acetate, 3-methyl-3-methoxybutyl acetate, propylene glycol diacetate, And at least one ester compound selected from the group consisting of ethylene glycol monobutyl ether acetate.
By using this type of third organic solvent, before mixing with a predetermined amount of water, a uniform solution is formed with the first organic solvent and the second organic solvent in a wide temperature range, and When a fixed amount of water is added afterwards, it becomes a white turbid cleaning composition and can exhibit further superior cleaning power.

Further, in constituting the stock solution for the cleaning composition of the present invention, the fourth organic solvent further includes a glycol ether and an alcohol compound having an SP value in the range of 8.5 to 12, and the glycol. The blending amount of the ether and alcohol compound is preferably set to a value in the range of 5 to 600 parts by weight with respect to 100 parts by weight of the first organic solvent.
By adding a predetermined amount of such a fourth organic solvent, the second organic solvent is supplemented, and phase separation between the first organic solvent and the third organic solvent is more effectively prevented. can do.

Moreover, when comprising the stock solution for cleaning composition of this invention, it is preferable to make pH into the value within the range of 6.5-12.5 in a water dilution state.
By setting such a pH value, even when a metal is contained in an electronic component or the like that is an object to be cleaned, it is possible to ensure sufficient cleaning properties against flux or the like while preventing corrosion of the metal. it can.

Another aspect of the present invention is a cleaning composition for cleaning an object to be cleaned in a cloudy state while containing 50 to 1900 parts by weight of water with respect to 100 parts by weight of the stock solution for the cleaning composition. A thing,
Stock solution for cleaning composition
As the first organic solvent, a hydrocarbon compound or an aromatic compound having an SP value in the range of 6.5 to 12, and
As the second organic solvent, a nitrogen-containing compound or a sulfur-containing compound having an SP value in the range of 8 to 15,
As the third organic solvent, an ester compound having an SP value in the range of 8 to 12,
Including
For 100 parts by weight of the first organic solvent,
The blending amount of the second organic solvent is a value within the range of 5 to 1400 parts by weight,
The cleaning composition is characterized in that the blending amount of the third organic solvent is set to a value in the range of 5 to 1400 parts by weight.
That is, based on a predetermined detergent composition stock solution, by adding a predetermined amount of water later, it can be obtained as a cloudy cleaning composition, so that it can exhibit excellent detergency and environment. It is possible to provide a cleaning composition that is excellent in safety, handleability, and reprocessing.

Further, another aspect of the present invention is a mixing step of mixing 50 to 1900 parts by weight of water with respect to 100 parts by weight of the stock solution for a detergent composition,
A cleaning method including cleaning a target object in a cloudy state,
Stock solution for cleaning composition
As the first organic solvent, a hydrocarbon compound or an aromatic compound having an SP value in the range of 6.5 to 12, and
As the second organic solvent, a nitrogen-containing compound or a sulfur-containing compound having an SP value in the range of 8 to 15,
As the third organic solvent, an ester compound having an SP value in the range of 8 to 12,
Including
For 100 parts by weight of the first organic solvent,
The blending amount of the second organic solvent is a value within the range of 5 to 1400 parts by weight,
The amount of the third organic solvent is set to a value within the range of 5 to 1400 parts by weight.
By carrying out in this way, it is possible to exhibit excellent detergency with respect to an object to be cleaned using a cleaning composition excellent in environmental safety and handling properties.

It is a figure provided in order to demonstrate the influence with respect to the washability of the compounding quantity of a 1st organic solvent. It is a figure provided in order to demonstrate the influence with respect to the washability of the compounding quantity of a 2nd organic solvent. It is a figure provided in order to demonstrate the influence with respect to the washability of the compounding quantity of a 3rd organic solvent. It is a figure provided in order to demonstrate the influence with respect to drying property of the compounding quantity of a 3rd organic solvent. It is a figure provided in order to demonstrate the influence with respect to flash point of the compounding quantity of a 3rd organic solvent. It is a figure provided in order to demonstrate the influence with respect to the washability of the compounding quantity of water. It is a figure provided in order to demonstrate an example of a washing | cleaning apparatus.

[First embodiment]
The first embodiment is a stock solution for a cleaning composition for cleaning an object to be cleaned in a cloudy state in a state of containing a predetermined amount of water while being mixed with water,
As the first organic solvent, a hydrocarbon compound or an aromatic compound having an SP value in the range of 6.5 to 12, and
As the second organic solvent, a nitrogen-containing compound or a sulfur-containing compound having an SP value in the range of 8 to 15,
As the third organic solvent, an ester compound having an SP value in the range of 8 to 12,
Including
For 100 parts by weight of the first organic solvent,
The blending amount of the second organic solvent is a value within the range of 5 to 1400 parts by weight,
It is a stock solution for a cleaning composition, characterized in that the blending amount of the third organic solvent is set to a value within the range of 5 to 1400 parts by weight.

1. Liquid characteristics The stock solution for cleaning composition according to the first embodiment is for adding a water after-cleaning, and for cleaning an object to be cleaned as a cloudy cleaning composition containing a predetermined amount of water. Of the composition.
That is, by using a plurality and a predetermined amount of organic solvents having a predetermined type and a predetermined SP value to constitute a stock solution for a cleaning composition, the solution is a uniform solution before a predetermined amount of water is added after the addition. At the same time, even when a predetermined amount of water is added afterwards to form a white turbid cleaning composition, it exhibits excellent detergency for the object to be cleaned, to which flux residue or solder paste adheres. it can.
More specifically, the first organic solvent is a hydrocarbon compound (for example, aliphatic hydrocarbon) or an aromatic compound (for example, aromatic carbonized) having an SP value in the range of 6.5 to 12 Hydrogen and the like) and the ester compound having a SP value in the range of 8 to 12 as the third organic solvent are a combination that is hardly compatible with each other.
However, by including a predetermined amount of a nitrogen-containing compound (for example, an amine compound) or a sulfur-containing compound (for example, a sulfoxide compound) whose SP value as the second organic solvent is a value within the range of 8 to 15, In the stock solution for cleaning composition, the first organic solvent and the third organic solvent are compatible with each other to form a uniform solution.
And, when a predetermined amount of water is added later to the stock solution for the detergent composition, the effect of the second organic solvent changes, and the first organic solvent and the third organic solvent are: When incompatible and left to stand, the phases will separate. Although it becomes cloudy when placed in a predetermined stirring state, it can exhibit excellent cleaning power against flux residue, solder paste, and the like.

In addition, since such a stock solution for a detergent composition can be used by mixing with a relatively large amount of water, it efficiently provides a detergent composition excellent in environmental safety, handling, and reprocessing. can do.
More specifically, since it is possible to contain 60% by weight or more of water with respect to the total amount, it does not correspond to a dangerous material of the Fire Service Act.
Similarly, since a relatively large amount of water is contained, even if the cleaning composition is contaminated by use, it can be efficiently recycled and used.
Furthermore, with such a detergent composition stock solution, the user can change the blending ratio of the detergent composition stock solution and water in accordance with the degree of contamination in the object to be cleaned, etc. In addition, it is possible to efficiently provide a cleaning composition having different cleaning properties.

2. 1st organic solvent (1) kind Moreover, the 1st organic solvent which comprises the stock solution for cleaning composition is a hydrocarbon compound or an aromatic compound whose SP value is a value within the range of 6.5-12. It is an organic solvent to be blended in order to exhibit a predetermined detergency.
That is, by using a hydrocarbon compound or aromatic compound having a predetermined SP value as the first organic solvent, before mixing with a predetermined amount of water, the second organic solvent and the third organic solvent are mixed in a wide temperature range. When a uniform solution is composed together with an organic solvent and a predetermined amount of water is added afterwards, it becomes a white turbid cleaning composition and can exhibit further excellent cleaning power.

  More specifically, the first organic solvent is a hydrocarbon compound or an aromatic compound that does not correspond to any of the second and third organic solvents or the fourth organic solvent described later. For example, anisole (SP value: 9.3, boiling point: 152 ° C., flash point: 52 ° C.), furfural (SP value: 10.2, boiling point: 162 ° C., flash point: 62 ° C.), methylstyrene (SP value) : 8.8, boiling point: 164 ° C, flash point: 54 ° C, myrcene (SP value: 7.7, boiling point: 167 ° C, flash point: 54 ° C), cumene (SP value: 9.0, boiling point: 169) , Flash point: 50 ° C., menthane (SP value: 7.2, boiling point: 170 ° C., flash point: 63 ° C.), phenetole (SP value: 9.0, boiling point: 170 ° C., flash point: 63 ° C.) Decane (SP value: 7.7, boiling point: 170 ° C., flash point: 53 ), Limonene (SP value: 7.8, boiling point: 175 ° C., flash point: 48 ° C.), cymene (SP value: 8.7, boiling point: 177 ° C., flash point: 47 ° C.), terpinene (SP value: 8) 0.0, boiling point: 180 ° C., flash point: 71 ° C., n-paraffin L (SP value: 8.9, boiling point: 189-229 ° C., flash point: 71 ° C.), indene (SP value: 6.8, Boiling point: 182 ° C, flash point: 78 ° C) Toluidine (SP value: 9.8, boiling point: 202 ° C, flash point: 85 ° C), durene (SP value: 9.2, boiling point: 192 ° C, flash point: 65 ° C.), benzylamine (SP value: 9.9, boiling point: 185 ° C., flash point: 72 ° C.), benzyl ethyl ether (SP value: 8.9, boiling point: 189 ° C., flash point: 73 ° C.), thio Anisole (SP value: 8.8, boiling point: 188 ° C, flash point: 72 ° C), dimethylaniline SP value: 9.9, boiling point: 188 ° C, flash point: 63 ° C, linalool (SP value: 9.4, boiling point: 198 ° C, flash point: 83 ° C), methyl benzoate (SP value: 9.9) Boiling point: 199 ° C., flash point: 82 ° C., diisopropylbenzene (SP value: 8.3, boiling point: 202 ° C., flash point: 85 ° C.), swazole (SP value: 9.5, boiling point: 180-208 ° C., Flash point: 64 ° C), guaiacol (SP value: 10.2, boiling point: 205 ° C, flash point: 87 ° C), benzyl alcohol (SP value: 11.6, boiling point: 205 ° C, flash point: 93 ° C), Tetralin (SP value: 9.2, boiling point: 208 ° C, flash point: 77 ° C), N-methylbenzylamine (SP value: 9.5, boiling point: 180 ° C, flash point: 77 ° C), N, N- Dimethylbenzylamine (SP value: 9.8, boiling point: 181 ° C., Flash point: 60 ° C., α-phenylethylamine (SP value: 9.7, boiling point: 192 ° C., flash point: 79 ° C.), and phenethylamine (SP value: 9.7, boiling point: 198 ° C., flash point: 90) At least one aliphatic hydrocarbon or aromatic compound selected from the group consisting of benzylamine and benzyl alcohol. ) Is preferable.

In particular, the first organic solvent includes anisole, furfural, cumene, phenetole, decane, limonene, cymene, terpinene, n-paraffin, benzylamine, benzylethyl ether, methyl benzoate, diisoprobenzene, benzyl alcohol, toluidine, N It is preferably at least one selected from the group consisting of -methylbenzylamine, N, N-dimethylbenzylamine, α-phenylethylamine and phenethylamine.
The reason for this is that by using such a kind of the first organic solvent, excellent cleaning properties can be obtained even with a relatively small amount of blending, and a decrease in drying property is relatively reduced. .
Therefore, the SP value in the first organic solvent is preferably set to a value within the range of 7 to 12, and more preferably set to a value within the range of 8 to 11.

(2) Compounding quantity Moreover, it is preferable to make the compounding quantity of a 1st organic solvent into the value within the range of 0.25 to 55 weight% with respect to the whole quantity.
The reason for this is that if the amount of the first organic solvent is less than 0.25% by weight, the cleaning effect on the flux or the like may be significantly reduced. On the other hand, if the blending amount of the first organic solvent exceeds 55% by weight, the amount of the combustible liquid exceeds the predetermined amount, and therefore, it may be necessary to handle it as a dangerous material under the Fire Service Law. .
Therefore, in consideration of the balance between the cleanability and handleability, the blending amount of the first organic solvent is more preferably set to a value within the range of 1 to 50% by weight with respect to the total amount. More preferably, the value is within the range of 3 to 30% by weight.

Moreover, the result of having examined the influence with respect to the washability of the compounding quantity of a 1st organic solvent in FIG. 1 is shown. That is, the horizontal axis of FIG. 1 shows the blending amount (% by weight) of the first organic solvent in the detergent composition (including moisture) using the detergent composition stock solution according to Example 1. On the vertical axis, the evaluation results (relative values) of the detergency when using the detergent composition stock solution according to Example 1 are shown.
And the evaluation result (relative value) of detergency is represented by an evaluation score of 0 to 10, and the evaluation standard is as follows after setting the cleaning temperature of the flux to 70 ° C.
Evaluation point 10: The flux cleaning time is 0 to less than 10 minutes.
Evaluation point 9: The flux cleaning time is less than 10 to 12 minutes.
Evaluation point 8: The flux cleaning time is less than 12 to 15 minutes.
Evaluation point 7: The flux cleaning time is less than 15 to 17 minutes.
Evaluation point 6: The flux cleaning time is less than 17 to 20 minutes.
Evaluation point 5: The flux cleaning time is less than 20 to 25 minutes.
Evaluation point 4: The flux cleaning time is less than 25 to 30 minutes.
Evaluation point 3: The flux cleaning time is less than 30 to 40 minutes.
Evaluation point 2: The flux cleaning time is less than 40 to 50 minutes.
Evaluation point 1: The flux cleaning time is less than 50 to 60 minutes.
Evaluation point 0: The flux cleaning time is 60 minutes or more.

As shown in the characteristic curve of FIG. 1, the blending amount of the first organic solvent in the detergent composition stock solution is, for example, 0.25 to 55% by weight indicated by range A in the figure with respect to the total amount. If it is the range of this, when it is set as the cleaning composition which contains a predetermined amount of water, favorable detergency is acquired.
On the other hand, when the blending amount of the first organic solvent is less than 0.25% by weight or exceeds 55% by weight, the cleaning property when a cleaning composition containing a predetermined amount of water is used. It is understood that the evaluation result is significantly reduced.
In addition, even in consideration of differences in blending components and blending amounts, it is understood that, for example, even better detergency can be obtained in the range of 1 to 50% by weight indicated by range B in the figure. The
Accordingly, by limiting the blending amount of the first organic solvent in the detergent composition stock solution to a value within a predetermined range, a good detergency can be obtained when the cleaning composition contains a predetermined amount of water. It is understood.
Therefore, it can be said that it is preferable to limit the blending amount of the first organic solvent in the cleaning composition stock solution of the present invention to a predetermined range from the cleaning properties when a cleaning composition containing a predetermined amount of water is used.

3. Second organic solvent (1) type The second organic solvent is a nitrogen-containing compound (for example, amine compound or pyrrolidone compound) or a sulfur-containing compound (for example, sulfoxide) having an SP value in the range of 8 to 15. Compound), or any one compound.
That is, the second organic solvent improves the detergency when it is used as a cleaning composition, and before mixing with a predetermined amount of water, phase separation between the first organic solvent and the third organic solvent is performed. It is an organic solvent to be blended in order to effectively prevent water and provide a stock solution for a cleaning composition as a uniform solution.

  More specifically, the second organic solvent is a nitrogen-containing compound or sulfur-containing compound that does not correspond to any of the first and third organic solvents or the fourth organic solvent described later. For example, 2-ethylhexylamine (SP value: 8.4, boiling point: 168 ° C, flash point: 53 ° C), monoisopropanolamine (SP value: 12.7, boiling point: 160 ° C, flash point: 74 ° C), N-ethylethanolamine (SP value: 11.4, boiling point: 169 ° C, flash point: 71 ° C), N, N-dimethylacetamide (SP value: 11.1, boiling point: 166 ° C, flash point: 70 ° C) N-methylformamide (SP value: 11.8, boiling point: 183 ° C, flash point: 98 ° C), dimethyl sulfoxide (SP value: 13.0, boiling point: 189 ° C, flash point: 95 ° C), N-methyl -2-Pyro At least selected from the group consisting of dong (SP value: 11.2, boiling point: 204 ° C., flash point: 91 ° C.), and diethanolamine (SP value: 14.4, boiling point: 269 ° C., flash point: 134 ° C.) One amine compound or pyrrolidone compound.

In particular, as the second organic solvent, at least one amine compound selected from the group consisting of 2-ethylhexylamine, monoisopropanolamine, dimethyl sulfoxide, N-methyl-2-pyrrolidone, diethanolamine, N, N-dimethylacetamide And pyrrolidone compounds are preferred.
The reason for this is that by using the second organic solvent of this kind, before mixing with a predetermined amount of water, the first organic solvent and the third organic solvent are mixed in a wide temperature range. This is because it effectively prevents phase separation and forms a uniform solution, and when a predetermined amount of water is added afterwards, it becomes a white turbid detergent composition and can exhibit further superior detergency. is there.
Therefore, the SP value in the second organic solvent is preferably set to a value within the range of 9 to 14, and more preferably set to a value within the range of 10 to 13.5.

(2) Blending amount The blending amount of the second organic solvent is set to a value in the range of 5 to 1400 parts by weight with respect to 100 parts by weight of the first organic solvent.
The reason for this is that if the blending amount of the second organic solvent is less than 5 parts by weight, the detergency of the cleaning composition may be significantly reduced.
On the other hand, when the blending amount of the second organic solvent exceeds 1400 parts by weight, the cleaning properties and drying properties of the cleaning composition may be significantly reduced.
Therefore, it is more preferable to set the blending amount of the second organic solvent to a value within the range of 10 to 600 parts by weight with respect to 100 parts by weight of the first organic solvent, and within a range of 30 to 350 parts by weight. More preferably, it is a value.

Moreover, the result of having examined the influence with respect to the washability of the compounding quantity of the 2nd organic solvent in FIG. 2 is shown. The horizontal axis of FIG. 2 shows the blending amount (parts by weight) of the second organic solvent in the detergent composition stock solution according to Example 1, and the vertical axis shows the detergent composition stock solution. The evaluation result (relative value) of the detergency in the used detergent composition is shown.
And the evaluation result (relative value) of the washing | cleaning property is represented by the evaluation score of 0-10, The evaluation criteria are the same as that of the case of FIG.
And as the characteristic curve of FIG. 2 shows, the blending amount of the second organic solvent in the detergent composition stock solution is, for example, in the range A in the figure with respect to 100 parts by weight of the first organic solvent. If it is in the range of 5 to 1400 parts by weight, good cleanability with an evaluation score of 8 or more is obtained.
On the other hand, it is understood that when the blending amount of the second organic solvent becomes a value less than 5 parts by weight or exceeds 1400 parts by weight, the detergency evaluation result is remarkably lowered.
In addition, even if the difference in the blending components and the blending amount are taken into account, for example, if the range is 10 to 600 parts by weight shown in the range B in the figure, the further excellent detergency with an evaluation score of about 10 is obtained. It is understood that it is obtained.
Therefore, it is understood that good detergency can be obtained by limiting the blending amount of the second organic solvent in the detergent composition stock solution to a value within a predetermined range.

4). 3rd organic solvent (1) kind Moreover, the 3rd organic solvent which comprises the stock solution for cleaning composition is an ester compound whose SP value is the value within the range of 8-12, Comprising: Cleaning composition It is an organic solvent to be blended in order to improve the drying property.
And the 3rd organic solvent is an organic solvent mix | blended in order to provide the stock solution for cleaning composition as a uniform solution with the 1st and 2nd organic solvent before mixing with predetermined amount of water. .

  More specifically, the third organic solvent is an ester compound that does not fall into any of the first to second organic solvents and the fourth organic solvent described later, and includes, for example, propylene glycol monomethyl. Ether acetate (SP value: 9.2, boiling point: 146 ° C., flash point: 47 ° C.), 3-methoxybutyl acetate (SP value: 9.3, boiling point: 173 ° C., flash point: 63 ° C.), 3-methoxy -3-methylbutyl acetate (SP value: 9.2, boiling point: 188 ° C, flash point: 73 ° C), propylene glycol diacetate (SP value: 10.4, boiling point: 190 ° C, flash point: 93 ° C), Ethylene glycol monobutyl ether acetate (SP value: 9.0, boiling point: 192 ° C., flash point: 88 ° C.), butyl lactate (SP value: 10.5, boiling point: 188 ° C., flash point: 71 ), Methyl acetoacetate (SP value: 11.6, boiling point: 172 ° C., flash point: 77 ° C.), ethyl acetoacetate (SP value: 10.7, boiling point: 181 ° C., flash point: 75 ° C.), anhydrous propion Acid (SP value: 10.5, boiling point: 167 ° C, flash point: 74 ° C), butyric anhydride (SP value: 9.7, boiling point: 199 ° C, flash point: 88 ° C), diethyl oxalate (SP value: At least one ester selected from the group consisting of 10.8, boiling point: 189 ° C, flash point: 76 ° C, and octanoic acid ester (SP value: 8.4, boiling point: 208 ° C, flash point: 75 ° C) A compound.

In particular, the third organic solvent is selected from the group consisting of propylene glycol monomethyl ether acetate, 3-methoxybutyl acetate, 3-methyl-3-methoxybutyl acetate, propylene glycol diacetate, and ethylene glycol monobutyl ether acetate. It is preferably at least one ester compound.
The reason for this is that by using the third organic solvent of this kind, before mixing with a predetermined amount of water, a uniform solution is formed together with the first organic solvent and the second organic solvent in a wide temperature range. This is because when a predetermined amount of water is added after the composition, a more excellent detergency can be exhibited as a cloudy detergent composition.
Therefore, the SP value in the third organic solvent is preferably set to a value within the range of 8.5 to 11.5, and more preferably set to a value within the range of 9 to 11.

(2) Blending amount The blending amount of the third organic solvent is set to a value within the range of 5 to 1400 parts by weight with respect to 100 parts by weight of the first organic solvent.
This is because when the blending amount of the third organic solvent is less than 5 parts by weight, the drying property when the cleaning composition is constituted from the cleaning composition stock solution may be significantly reduced. is there.
On the other hand, when the blending amount of the third organic solvent exceeds 1400 parts by weight, the detergency when the detergent composition is constituted from the detergent composition stock solution may be significantly reduced. .
Therefore, it is more preferable to set the blending amount of the third organic solvent to a value within the range of 10 to 600 parts by weight with respect to 100 parts by weight of the first organic solvent, and within a range of 30 to 350 parts by weight. More preferably, it is a value.

Moreover, the result of having examined the influence with respect to the washability of the compounding quantity of the 3rd organic solvent in FIG. 3 is shown. The horizontal axis of FIG. 3 shows the blending amount (parts by weight) of the third organic solvent in the detergent composition stock solution according to Example 1, and the vertical axis shows the detergent composition stock solution. The evaluation result (relative value) of the detergency in the used detergent composition is shown.
Moreover, the evaluation result (relative value) of the detergency is represented by evaluation points of 0 to 10, and the evaluation criteria are the same as in the case of FIG.
And as the characteristic curve of this FIG. 3 shows, the compounding quantity of the 3rd organic solvent in detergent composition undiluted | stock solution is a range A in the figure with respect to 100 weight part of 1st organic solvents, for example. As shown, if the value is 1400 parts by weight or less, a good detergency with an evaluation point of 8 or more is obtained, and as shown by the range B, if the value is 600 parts by weight or less, the evaluation point is 10 or more. Good detergency was obtained.
However, it is understood that the evaluation result of the detergency is good even when the blending amount of the third organic solvent is 0 part by weight.

On the other hand, in FIG. 4, the result of having examined the influence with respect to drying property of the compounding quantity of the 3rd organic solvent is shown. The horizontal axis of FIG. 4 shows the blending amount (parts by weight) of the third organic solvent in the detergent composition stock solution according to Example 1, and the vertical axis shows the detergent composition stock solution. The evaluation result (relative value) of the drying property in the used cleaning composition is shown.
And the evaluation result (relative value) of dryness is represented by the evaluation score of 0-10, and the evaluation criteria are as follows in the conditions of the drying temperature of 100 degreeC.
Evaluation point 10: Drying time is 0 to less than 5 minutes.
Evaluation point 9: The drying time is less than 5 to 7 minutes.
Evaluation point 8: The drying time is less than 7 to 10 minutes.
Evaluation point 7: The drying time is less than 10 to 12 minutes.
Evaluation point 6: The drying time is less than 12 to 15 minutes.
Evaluation point 5: The drying time is less than 15 to 17 minutes.
Evaluation point 4: The drying time is 17 to less than 20 minutes.
Evaluation point 3: The drying time is 20 to less than 22 minutes.
Evaluation point 2: The drying time is less than 22 to 25 minutes.
Evaluation point 1: The drying time is less than 25 to 30 minutes.
Evaluation point 0: The drying time is 30 minutes or more.

As shown in the characteristic curve of FIG. 4, the blending amount of the third organic solvent in the detergent composition stock solution is 10 parts by weight or more with respect to the total amount, as indicated by range A in the figure. If so, good dryability with an evaluation score of 8 or more is obtained, and as shown by the range B, if the value is 20 parts by weight or more, even better dryability with an evaluation score of about 10 is obtained. Yes.
Therefore, it is understood that good drying properties can be obtained by limiting the blending amount of the third organic solvent in the cleaning composition stock solution to a value within a predetermined range.
Therefore, when the evaluation result of the cleaning property described above is taken into consideration, by limiting the blending amount of the third organic solvent in the cleaning agent composition stock solution to a value within a predetermined range, between the good cleaning property and the drying property. Can balance.

In addition, the result of having examined the influence with respect to the flash point of a cleaning composition stock solution of the compounding quantity of a 3rd organic solvent in FIG. 5 is shown.
That is, the horizontal axis of FIG. 5 shows the blending amount (parts by weight) of the third organic solvent in the detergent composition stock solution according to Example 1, and the vertical axis shows the detergent composition. The flash point (° C) of the stock solution is taken.
As shown in the characteristic curve of FIG. 5, if the blending amount of the third organic solvent in the detergent composition stock solution is, for example, a value of 50 parts by weight or more with respect to the total amount, it is 75 ° C. or more. A relatively high flash point value is obtained.
Therefore, in addition to the evaluation results of the cleaning property and drying property described above, by limiting the blending amount of the third organic solvent in the detergent composition stock solution to a value within a predetermined range, not only the flash point, A balance between good cleanability and dryness can be achieved.

5). Fourth Organic Solvent (1) Type In addition, when constituting the detergent composition stock solution, as the fourth organic solvent, a glycol ether or alcohol compound having an SP value in the range of 8.5 to 12 is used. In addition to the addition, the amount of the fourth organic solvent is preferably set to a value in the range of 5 to 600 parts by weight with respect to 100 parts by weight of the first organic solvent.
The reason for this is that by adding a predetermined amount of such a fourth organic solvent, the second organic solvent is supplemented, and phase separation between the first organic solvent and the third organic solvent is performed. This is because it can be effectively prevented.

Here, the fourth organic solvent is a glycol ether or an alcohol compound that does not correspond to any of the first to third organic solvents.
More specifically, propylene glycol monopropyl ether (SP value: 9.6, boiling point: 150 ° C., flash point: 48 ° C.), propylene glycol monobutyl ether (SP value: 9.0, boiling point: 171 ° C., flash point: 62 ° C.), dipropylene glycol dimethyl ether (SP value: 8.7, boiling point: 171 ° C., flash point: 65 ° C.), ethylene glycol monoisobutyl ether (SP value: 9.1, boiling point: 161 ° C., flash point: 56) ° C), ethylene glycol monoisopropyl ether (SP value: 10.9, boiling point: 142 ° C, flash point: 46 ° C), furfuryl alcohol (SP value: 11.9, boiling point: 171 ° C, flash point: 65 ° C) , And 3-methoxy-3-methyl-1-butanol (SP value: 10.5, boiling point: 174 ° C, flash point: 68 ° C), etc. That.

(2) Compounding quantity Moreover, it is preferable to make the compounding quantity of a 4th organic solvent into the value within the range of 5-600 weight part with respect to 100 weight part of 1st organic solvents.
This is because when the amount of the fourth organic solvent is less than 5 parts by weight, the addition effect may not be exhibited.
On the other hand, when the blending amount of the fourth organic solvent exceeds 600 parts by weight, the detergency may be remarkably deteriorated.
Therefore, the blending amount of the fourth organic solvent is more preferably 10 to 250 parts by weight with respect to 100 parts by weight of the first organic solvent, and is preferably within the range of 15 to 150 parts by weight. More preferably, it is a value.

6). Surfactant (1) Type A surfactant is added to emulsify or solubilize the above-described first to third organic solvents or the first to fourth organic solvents in water. Is preferably added to improve the affinity for an object to be cleaned and, as a result, improve the cleaning performance.
Here, as preferable examples of the surfactant, polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene polypropylene alkyl ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene which are nonionic surfactants are used. A single type of glycol fatty acid ester, polyoxyethylene alkylamine, polyoxyethylene benzyl alcohol, polyglycerin fatty acid ester, or a combination of two or more types may be mentioned.

(2) Compounding quantity Moreover, it is preferable that the compounding quantity of surfactant shall be a value within the range of 0.01 to 5 weight% with respect to the whole quantity, for example.
The reason for this is that when the amount of the surfactant is less than 0.01% by weight, the compatibility of the first to third organic solvents described above becomes insufficient, and the stock solution for the detergent composition is used. This is because it may be easy to separate.
On the other hand, if the amount of the surfactant exceeds 5% by weight, the amount remaining on the object to be cleaned increases, and a rinsing step becomes essential, or the electrical characteristics of the object to be cleaned are deteriorated. Because there is.
Accordingly, in consideration of the balance between the emulsifiability and the persistence, the amount of the surfactant is more preferably set to a value in the range of 0.05 to 2% by weight with respect to the total amount. More preferably, the value is in the range of 0.1 to 2% by weight.

[Second Embodiment]
2nd Embodiment is a cleaning composition for wash | cleaning to-be-washed | cleaned material in a cloudiness state while it contains 50-1900 weight part of water with respect to 100 weight part of stock solutions for cleaning composition. There,
Stock solution for cleaning composition
As the first organic solvent, a hydrocarbon compound or an aromatic compound having an SP value in the range of 6.5 to 12, and
As the second organic solvent, a nitrogen-containing compound or a sulfur-containing compound having an SP value in the range of 8 to 15,
As the third organic solvent, an ester compound having an SP value in the range of 8 to 12,
Including
For 100 parts by weight of the first organic solvent,
The blending amount of the second organic solvent is a value within the range of 5 to 1400 parts by weight,
The cleaning composition is characterized in that the blending amount of the third organic solvent is set to a value in the range of 5 to 1400 parts by weight.

1. Cleaning Solution Composition Stock Solution The cleaning composition stock solution described in the first embodiment can be used as it is in the second embodiment, and therefore, the description thereof is omitted here.

2. Water Also, a predetermined amount of water is added after mixing to use in a cloudy state and exhibit excellent detergency.
That is, by adding a relatively large amount of water to the stock solution for the detergent composition, the effect of the second organic solvent is changed, and the first organic solvent, the third organic solvent, This is to promote the separation of the water and become a cloudy cleaning composition, which exhibits excellent cleaning power.
In addition, since it contains a relatively large amount of water, it is possible to efficiently provide a cleaning composition excellent in environmental safety, handleability, and reprocessing.
In addition, the user can change the blending ratio of the detergent composition stock solution and water according to the degree of contamination and the type of contamination in the object to be cleaned, so the cleaning property can be changed quickly and inexpensively. A cleaning composition can be provided.

Moreover, let the compounding quantity of water be the value within the range of 50-1900 weight part with respect to 100 weight part of stock solutions for cleaning composition.
The reason for this is that when the amount of water is less than 50 parts by weight, not only the cleaning property is deteriorated, but also the safety and the handling property may be deteriorated.
On the other hand, if the amount of water exceeds 1900 parts by weight, the detergency may be significantly reduced.
Therefore, the amount of water is more preferably set to a value in the range of 150 to 900 parts by weight, and a value in the range of 175 to 600 parts by weight with respect to 100 parts by weight of the stock solution for the detergent composition. More preferably.

Here, in FIG. 6, the result of having examined the influence of the compounding quantity of water with respect to 100 weight part of undiluted | determinated solutions for cleaning compositions in a detergency is shown. That is, the horizontal axis of FIG. 6 shows the amount of water blended (parts by weight) with respect to 100 parts by weight of the detergent composition stock solution according to Example 1, and the vertical axis shows the detergent composition stock solution. The evaluation results (relative values) for the detergency in the cleaning composition composed of
As shown in the characteristic curve of FIG. 6, the blending amount of water with respect to 100 parts by weight of the detergent composition stock solution is 50 to 1900 parts by weight with respect to the total amount, for example, as indicated by range A in the figure. If the value is within the range, a good detergency with an evaluation score of 8 or more is obtained.
Further, for example, as shown by a range B in FIG. 6, if the value is in the range of 65 to 900 parts by weight, a good detergency with an evaluation point of 10 is obtained.
Therefore, it is understood that, by limiting the blending amount of water with respect to 100 parts by weight of the detergent composition stock solution to a value within a predetermined range, good cleaning properties can be obtained in the cleaning composition obtained therefrom.

3. Characteristic (1) Flash point and combustion point Even when the cleaning composition does not have a flash point or has a flash point, the temperature is preferably set to a value of 40 ° C or higher.
The reason for this is that when the flash point of such a cleaning composition is 40 ° C. or higher, the cleaning composition is no longer a hazardous material under the Fire Service Law.
However, if the flash point of the cleaning composition is excessively high, the types and blending amounts of the first to third organic solvents that can be used may be excessively limited.
Therefore, even when the cleaning composition has a flash point, the temperature is more preferably set to a value within the range of 45 to 200 ° C, and further to a value within the range of 50 to 100 ° C. preferable.
In addition, as described in Example 1, the flash point of the cleaning composition can be measured according to JIS K 2265-1 and 4 (how to determine the flash point).

Moreover, it is preferable that the combustion point of a cleaning composition shall be 60 degreeC or more.
The reason for this is that when the burning point of such a cleaning composition is 60 ° C. or higher, it does not fall under the category of dangerous goods under the Fire Service Law.
However, if the combustion point of the cleaning composition becomes excessively high, the types and blending amounts of the first to third organic solvents that can be used may be excessively limited.
Therefore, the burning point of the cleaning composition is more preferably set to a value within the range of 80 to 250 ° C, and further preferably set to a value within the range of 100 to 150 ° C.

(2) Volatile organic compound Moreover, it is preferable that the compounding quantity of the volatile organic compound (VOC) in a cleaning composition shall be 50 weight% or less.
This is because if the blending amount of the volatile organic compound in the cleaning composition exceeds 50% by weight, an environmental problem occurs, a specific processing device is required, and further, an aqueous cleaning composition is used. This is because it may be difficult to handle as an object.
However, if the blending amount of the volatile organic compound in the cleaning composition is excessively small, the types and blending amounts of usable hydrocarbon compounds, nitrogen-containing compounds, or ester compounds may be excessively limited. is there.
Accordingly, the blending amount of the volatile organic compound in the cleaning composition is more preferably set to a value within the range of 0.5 to 45% by weight, and further preferably set to a value within the range of 10 to 40% by weight. preferable.
In addition, the compounding quantity of the volatile organic compound (VOC) in a cleaning composition can be measured using a gas chromatography measuring method.

(3) pH value Moreover, it is preferable to make pH value of a cleaning composition into the value of 6.5 or more.
The reason for this is that when the pH value is less than 6.5, the cleaning effect on the flux may be significantly reduced.
However, if the pH value of the cleaning composition becomes excessively large, the substrate of the electronic component that is the object to be cleaned may be affected.
Therefore, the pH value of the cleaning composition is more preferably set to a value within the range of 7 to 12.5, and further preferably set to a value within the range of 9 to 12.
The pH of the cleaning composition can be measured using a pH meter as described in Example 1.

(4) Amine value Moreover, it is preferable to make the amine value of a cleaning composition into the value of 1 mgKOH / g or more.
This is because when the amine value is less than 1 mg KOH / g, the cleaning effect on the flux may be significantly reduced.
However, if the amine value of the cleaning composition becomes excessively large, the substrate of the electronic component that is the object to be cleaned may be affected.
Accordingly, the amine value of the cleaning composition is more preferably set to a value within the range of 5 to 250 mgKOH / g, and further preferably set to a value within the range of 10 to 200 mgKOH / g.
The amine value of the cleaning composition can be measured by neutralization titration as described in Example 1.

(5) Electric conductivity Moreover, it is preferable to make the electric conductivity (room temperature) of a cleaning composition into the value within the range of 5-700 microsiemens / cm.
The reason for this is that when the electrical conductivity is less than 5 μS / cm, the cleaning effect on the flux may be significantly reduced. On the other hand, if the electrical conductivity exceeds 700 μS / cm, the electronic component or the substrate that is the object to be cleaned may be affected.
Accordingly, the electrical conductivity of the cleaning composition is more preferably set to a value within the range of 10 to 600 μS / cm, and further preferably set to a value within the range of 20 to 500 μS / cm.
The electrical conductivity of the cleaning composition can be measured using an electrical conductivity meter as described in Example 1.

(6) Light transmittance It is preferable to set the light transmittance (visible light / 750 nm standard), which is a standard of the cloudiness state of the cleaning composition, to a value within 80%.
The reason for this is that when the light transmittance exceeds 80%, the solution becomes close to a uniform solution, or the phase separation becomes excessive, and the white turbid state cannot be maintained. This is because there may be a significant decrease.
On the other hand, if the light transmittance of such a cleaning composition is excessively small, phase separation becomes insufficient, and it may be difficult to control the cleaning properties, or the cleaning effect on flux or the like may be reduced. Because there is.
Therefore, the light transmittance of the cleaning composition is more preferably set to a value within the range of 0.5 to 60%, and further preferably set to a value within the range of 3 to 40%.
In addition, the light transmittance with respect to visible light of a cleaning composition can be measured as described in Example 1 using a spectrophotometer.

[Third embodiment]
In the third embodiment, a mixing step of mixing 50 to 1900 parts by weight of water with respect to 100 parts by weight of the stock solution for the detergent composition;
A cleaning method including cleaning a target object in a cloudy state,
Stock solution for cleaning composition
As the first organic solvent, a hydrocarbon compound or an aromatic compound having an SP value in the range of 6.5 to 12, and
As the second organic solvent, a nitrogen-containing compound or a sulfur-containing compound having an SP value in the range of 8 to 15,
As the third organic solvent, an ester compound having an SP value in the range of 8 to 12,
Including
For 100 parts by weight of the first organic solvent,
The blending amount of the second organic solvent is a value within the range of 5 to 1400 parts by weight,
The amount of the third organic solvent is set to a value within the range of 5 to 1400 parts by weight.

1. Mixing step The mixing step is a step of preparing a cleaning composition by mixing a stock solution for cleaning composition and a predetermined amount of water.
More specifically, in the mixing step, 50 to 1900 parts by weight of water is mixed with 100 parts by weight of the stock solution for the detergent composition.
In carrying out the mixing step, it is preferable to use a known mixer or stirring device.

2. Cleaning Step (1) Cleaning Mode When performing the cleaning method using the cleaning composition, the cleaning method is not particularly limited. For example, an immersion method, a rocking method, an ultrasonic vibration method, a shower cleaning method Various means such as a submerged jet method can be employed.
It is also preferable to clean the flux in a state where the cleaning composition is impregnated or adhered to a brush, a cleaning roll or the like.
In carrying out the cleaning method using the cleaning composition, more specifically, it is preferable to use a cleaning device described later.

(2) Cleaning conditions Moreover, when implementing the cleaning method using a cleaning composition, it is preferable to wash | clean on conditions 30-30 degreeC and 10 second-30 minutes, for example.
The reason for this is that if a predetermined cleaning effect can be obtained under such conditions, thermal deterioration and oxidative deterioration of the cleaning composition itself can be effectively prevented.
In addition, in order to show the outstanding cleaning property in a cloudy state, it is preferable to make a cleaning composition into a stirring state as one of the cleaning conditions.
More specifically, it is preferable to use a propeller stirrer, a magnetic stirrer, or the like to set the number of rotations in the range of 30 to 1000 rpm and bring the cleaning composition into a stirring state.

3. Rinsing Step Further, in carrying out the cleaning method using the cleaning composition, it is preferable to provide a step of further rinsing to rinse the cleaned electronic component or substrate.
This is because, when the cleaning composition remains, electrical corrosion or the like may occur in the electronic component or the substrate.
Here, it is preferable to use an alcohol solvent as the rinse liquid. This is because, compared with water, it can be dried quickly and the amine compound can be removed sufficiently.

  More specifically, as alcohol solvents, methyl alcohol, ethyl alcohol, propyl alcohol, isopropyl alcohol, butyl alcohol, isobutyl alcohol, t-butyl alcohol, s-butyl alcohol, amyl alcohol, 1-methoxy-2- It is preferable to use one kind of alcohol such as propanol or two or more kinds of alcohols.

In addition, it is preferable to use an alcohol solvent in which a predetermined amount of water is added to these alcohols, and more specifically, water is added so as to be 40 wt% to 70 wt% with respect to the total amount. It is preferable to use an added alcohol solvent.
In addition, as rinse conditions, it is more preferable to carry out the rinse process in two steps within the range of 5-40 degreeC and 1 second-30 minutes. The reason for this is to reduce the amount of surfactant and amine compound residue.
However, when removing the flux adhering to the solder processing apparatus, etc., there is no problem of corrosion of the electronic component or substrate due to the remaining surfactant, etc., so that the rinsing process may be omitted or simplified. it can.

4). Cleaning Device When performing the cleaning method using the cleaning agent composition, as the flux cleaning device 10 to be used, as shown in FIG. 7A, for example, an ultrasonic vibrator 29 for ultrasonic cleaning is used. It is preferable that the cleaning tank 12 provided, the rinse tank 14, and the drying tank 16 are provided.
More specifically, the cleaning tank 12 includes a housing 12a, a container 20 for an object to be cleaned 23, an ultrasonic vibrator 29, a cleaning liquid stirring device (not shown), and a heater 19 with a thermostat. It is preferable that the ultrasonic vibrator 29 applies ultrasonic vibration to the cleaning liquid 21 that is stirred and circulated to efficiently clean the object 23 to be cleaned.

  Further, as shown in FIG. 7B, the cleaning tank 12 includes a housing 12a, a container 20 for an object to be cleaned 23, an ultrasonic vibrator 29, a cleaning liquid stirring device (not shown), It is also preferable to comprise a heater 19 with a thermostat and a circulation path 22 for circulating the cleaning liquid 21. That is, the partially contaminated cleaning liquid 21 can be circulated by the pump 24, and the cleaning liquid 21 can be regenerated in the filter 28 provided in the circulation path 22 and the salt-forming compound container 26. .

Next, in the rinsing tank 14, it is preferable to further remove the flux and the like from the object 23 to be cleaned, remove the cleaning liquid 21, and further evaporate the rinsing liquid 15 and the like in the drying tank 16.
That is, by using such a cleaning apparatus 10, the electronic component or the substrate subjected to the soldering process is cleaned using the cleaning composition of the present invention, and the flux adhering to them is efficiently removed. be able to.

5). Object to be cleaned In carrying out the cleaning method using the cleaning composition, the type of the object to be cleaned to which the cleaning composition is applied is not particularly limited, but it is not limited to soldered electronic parts and substrates. Of course, even if it is not soldered, a part having an influence of flux can be suitably used. Therefore, for example, a printed circuit board, a ceramic wiring board, a semiconductor element (including semiconductor parts such as BGA, CSP, PGA, and LGA), a semiconductor element mounting board, a bumped TAB tape, a bumpless TAB tape, and a semiconductor element mounting TAB Specific examples include a tape, a lead frame, a capacitor, and a resistor.

  In these objects to be cleaned, the type of flux used is not particularly limited. For example, not only ordinary solder flux but also low VOC flux, lead-free solder flux, or high melting point solder. It is preferably a flux or a no-clean solder flux. That is, these solder fluxes usually have rosin as a main component, and include organic acid salts, glycidyl ether compounds, oxyacids, carboxylic acids (including dicarboxylic acids), anilides and thermosetting resins (for example, epoxy resins and This is because at least one compound of thermosetting acrylic resin) is often added. Therefore, if it is the cleaning composition of this invention, it can show the outstanding washing | cleaning property also to these solder flux as well as normal solder flux.

  There are no particular restrictions on the types of solder such as ordinary solder, high melting point solder, lead-free solder, and no-clean solder to which flux is added. For example, Sn-Ag, Sn-Ag-Cu Typical examples include Sn, Sn—Cu, Sn—Zn, Sn—Bi, and Pb—Sn.

  Hereinafter, the present invention will be described in detail with reference to examples. Needless to say, the present invention is not limited to the following description.

[Example 1]
1. Preparation of a stock solution for cleaning composition In a container, 32 g of benzylamine (BAN) and 161 g of benzyl alcohol (BAL) as a first organic solvent, and 323 g of monoisopropanolamine (MIPA) as a second organic solvent, As a third organic solvent, 484 g of ethylene glycol monobutyl ether acetate (BGAC) was contained, and sufficiently stirred using a mixer as a stirrer so as to be uniform. The stock solution was used.
In addition, although the compounding composition of the stock solution for cleaning composition of Example 1 is shown in Table 1, it shall represent with the abbreviation in said parenthesis.

2. Preparation and evaluation of cleaning composition (1) Preparation of cleaning composition In a container, 310 g of the stock solution for cleaning composition and 690 g of water are stored, and are sufficiently stirred using a mixer as a stirring device. Thus, a cleaning composition was obtained. However, it was confirmed that it was separated into two phases when allowed to stand for about 10 minutes.

(2) -1 Flash point JIS K2265-1: 2007 (flash point measurement method (tag sealing method)) and JIS K2265-4: 2007 (flash point measurement method) (Cleveland open method)).

(2) -2 pH value While using the pH value of M-8 (manufactured by Horiba Seisakusho), which is a pH meter, while stirring with a magnetic stirrer, the pH value of the obtained detergent composition was changed to a cloudy state. The measurement was performed at a measurement temperature of 25 ° C.

(2) -3 Light transmittance 200 g of the obtained cleaning composition was placed in a 300 ml beaker. Next, the magnetic stirrer in the beaker was rotated at about 700 rpm to make the cleaning composition cloudy. The cleaning composition in that state was quickly accommodated in a spectrophotometer cell and allowed to stand for 5 minutes, and the light transmittance at that time was measured under the following conditions.
Measuring device: Spectrophotometer (manufactured by Hitachi, Ltd.)
Measurement light: Visible light (wavelength 750 nm)
Measurement temperature: Room temperature (25 ° C)

(2) -4 Electrical conductivity measurement 200 g of the obtained cleaning composition was placed in a 300 ml beaker. Next, the magnetic stirrer was rotated to make the cleaning composition cloudy. While maintaining this state, the electrical conductivity of the resulting cleaning composition was measured using a conductivity meter CEH-12 (manufactured by Kos Co., Ltd.) at room temperature (25 ° C.).

(2) -5 Detergency Evaluation Printed Eco Solder M705-GRN360-K2-V (manufactured by Senju Metal Industry Co., Ltd.) as a commercially available solder paste through a metal mask on a JIS2 type comb substrate. Applied.
Next, the comb-shaped substrate on which the commercially available solder paste was printed and applied was placed on a hot plate with a cover maintained at a temperature of 240 ° C., and the commercially available solder paste was reflowed to obtain a test piece.
On the other hand, 200 g of the obtained cleaning composition was placed in a 300 ml beaker and then maintained at a temperature of 70 ° C.
Next, a plurality of test pieces are housed in a beaker containing a cleaning composition, and in that state, a magnetic stirrer is rotated to change the cleaning time while changing the cleaning time to make the cleaning composition cloudy. A cleaning test was performed.
That is, for each predetermined cleaning time, the rotation of the magnetic stirrer was stopped, and any test piece was taken out from the cleaning agent, and dried for 10 minutes using a circulation oven maintained at 100 ° C.
Finally, the dried test piece is taken out from the circulation oven, and the surface is observed using a stereomicroscope (magnification 40), and the time during which the solder paste can be completely washed (washing time) is measured. In the light of the criteria, a detergency evaluation was then performed.
A: Cleaning time is less than 10 minutes.
○: The washing time is less than 10 to 15 minutes.
(Triangle | delta): Cleaning time is less than 15-30 minutes.
X: Cleaning time is 30 minutes or more.

(2) -6 Dryability Evaluation 200 g of the obtained cleaning composition was placed in a 300 ml beaker and then maintained at a temperature of 70 ° C.
Next, the glass epoxy substrate is placed in a beaker containing 200 g of the cleaning composition, and in that state, the magnetic stirrer in the beaker is rotated to turn the cleaning composition into a cloudy state, and the cleaning test is performed for 30 minutes. Went.
Next, the rotation of the magnetic stirrer was stopped, the glass epoxy substrate was taken out from the cleaning agent, and drying was performed for a predetermined time using a circulation oven maintained at 100 ° C.
Thereafter, the dried glass epoxy substrate was taken out from the circulation oven, visually observed on the surface, and the drying property of the cleaning composition was evaluated in light of the following criteria.
(Double-circle): It can dry in 5 minutes.
○: Drying is possible in 10 minutes.
Δ: After drying for 10 minutes, there is a little liquid residue.
X: There is much liquid residue after drying for 10 minutes.

[Examples 2 to 10]
In Examples 2 to 10, the blending ratios were changed, respectively, to prepare the detergent composition stock solution and the detergent composition shown in Table 1, respectively, and the detergency and the like were evaluated in the same manner as in Example 1.
In addition, the following abbreviations indicate a partial blend composition of the detergent composition stock solution in Table 1.
Pseudocumene: cumene, n-decane: decane, benzylamine: BAN, N-methylbenzylamine: MBAN, N, N-dimethylbenzylamine: DMBAN, benzyl alcohol: BAL, monoisopanolamine: MIPA, N-ethylethanol Amine: MEM, N, N-dimethylacetamide: DMAC, dimethyl sulfoxide: DMSO, N-methyl-2-pyrrolidone: NMP, propylene glycol monomethyl ether acetate: PMA, 3-methoxybutyl acetate: meteace, 3-methoxy-3- Methyl-1-butyl acetate: MMBAC, propylene glycol diacetate: PGDA, ethylene glycol monobutyl ether acetate: BGAC, propylene glycol monopropyl ether: PFG Propylene glycol monobutyl ether: BFG, dipropylene glycol dimethyl ether: DMFDG, 3- methoxy-3-methyl-1-butanol: MMB

[Examples 11 to 20]
In Examples 11 to 20, the mixing ratios were changed to prepare the detergent composition stock solution and the detergent composition shown in Table 2, and the detergency and the like were evaluated in the same manner as in Example 1.

[Examples 21 to 30]
In Examples 21 to 30, the mixing ratio was changed to prepare the detergent composition stock solution and the cleaning composition shown in Table 3, and the cleaning properties and the like were evaluated in the same manner as in Example 1.

[Comparative Examples 1-9]
In Comparative Examples 1 to 9, the detergent composition stock solution and the detergent composition shown in Table 4 were prepared, and the washability and the like were evaluated in the same manner as in Example 1.
As a result, in Comparative Example 1, since the predetermined amount of the first organic solvent was not added, an evaluation result that the detergency was extremely insufficient was obtained.
Moreover, in Comparative Example 2, since a predetermined amount of the second organic solvent was not added, an evaluation result that the detergency was extremely insufficient was obtained.
Moreover, in Comparative Example 3, since a predetermined amount of the third organic solvent was not added, an evaluation result that the detergency was extremely insufficient was obtained.

Moreover, in Comparative Example 4, since a predetermined amount of water was not added, the light transmittance was 100%, and thus an evaluation result that the detergency was extremely insufficient was obtained.
Moreover, in Comparative Example 5, since the blending amount of the second organic solvent was small, an evaluation result that the detergency was insufficient was obtained.
Moreover, in Comparative Example 6, since the blending amount of the second organic solvent was excessive, the light transmittance was 100%, and thus an evaluation result that the detergency was insufficient was obtained.
Moreover, in the comparative example 7, since the compounding quantity of the 3rd organic solvent was excessive, the evaluation result that cleaning property was inadequate was obtained.
Moreover, in the comparative example 8, since the compounding quantity of water was excessive, the evaluation result that the detergency was inadequate was obtained.
Moreover, in Comparative Example 9, since the predetermined amounts of the first and third organic solvents were not added, an evaluation result that the detergency was extremely insufficient was obtained.

According to the stock solution for the cleaning composition of the present invention, the cleaning composition and the cleaning method using the same, a plurality of organic solvents of a predetermined type and a predetermined SP value are used, and the blending of these organic solvents By constituting a stock solution for a detergent composition with a limited amount, the detergent composition is cloudy when a relatively large amount of water is added after the addition of a predetermined amount of water. As a product, an excellent detergency can be exhibited.
Therefore, according to the undiluted solution for the cleaning composition of the present invention, the cleaning composition and the cleaning method using the same, the cleaning of the flux residue, the solder paste, etc. is performed while considering the environmental safety and the handling property. It is possible to provide a stock solution for a cleaning composition that is a cleaning composition having excellent properties, a cleaning composition and a cleaning method using the same.
Therefore, it is possible not only to perform soldering processing accurately and inexpensively on electronic components that require high reliability, substrates such as high-frequency circuit boards, etc., but also a cleaning agent after cleaning while considering environmental issues. The composition can now be processed economically and easily.

DESCRIPTION OF SYMBOLS 10: Cleaning apparatus 12: Cleaning tank 14: Rinse tank 15: Rinse liquid 16: Drying tank 21: Cleaning liquid 22: Circulation path 26: Salt formation compound accommodating part 28: Filter 29: Ultrasonic vibrator

Claims (8)

It is a stock solution for a cleaning composition for cleaning an object to be cleaned in a cloudy state with a predetermined amount of water added while being mixed with water,
As the first organic solvent, a hydrocarbon compound or an aromatic compound having an SP value in the range of 6.5 to 12, and
As the second organic solvent, a nitrogen-containing compound or a sulfur-containing compound having an SP value in the range of 8 to 15,
As the third organic solvent, an ester compound having an SP value in the range of 8 to 12,
Including
For 100 parts by weight of the first organic solvent,
The blending amount of the second organic solvent is a value within the range of 5 to 1400 parts by weight,
A stock solution for a cleaning composition, wherein the blending amount of the third organic solvent is set to a value within the range of 5 to 1400 parts by weight.   The first organic solvent is anisole, furfural, cumene, phenetole, decane, limonene, cymene, terpinene, n-paraffin, benzylamine, benzylethyl ether, methylbenzoate, diisoprobenzene, benzyl alcohol, toluidine, N-methyl. The cleaning agent according to claim 1, which is at least one hydrocarbon compound or aromatic compound selected from the group consisting of benzylamine, N, N-dimethylbenzylamine, α-phenylethylamine, and phenethylamine. Stock solution for composition.   The second organic solvent is at least one nitrogen-containing compound selected from the group consisting of 2-ethylhexylamine, monoisopropanolamine, dimethylsulfoxide, N-methyl-2-pyrrolidone, diethanolamine, N, N-dimethylacetamide, or 3. The stock solution for a cleaning composition according to claim 1 or 2, which is a sulfur-containing compound.   The third organic solvent is at least one selected from the group consisting of propylene glycol monomethyl ether acetate, 3-methoxybutyl acetate, 3-methyl-3-methoxybutyl acetate, propylene glycol diacetate, and ethylene glycol monobutyl ether acetate. The undiluted | stock solution for cleaning composition as described in any one of Claims 1-3 which is two ester compounds.   The fourth organic solvent includes a glycol ether and an alcohol compound having an SP value in the range of 8.5 to 12, and the blending amount of the glycol ether and the alcohol compound is set to 100 weights of the first organic solvent. It is set as the value within the range of 5-600 weight part with respect to a part, The stock solution for cleaning composition as described in any one of Claims 1-4 characterized by the above-mentioned.   The stock solution for a cleaning composition according to any one of claims 1 to 5, wherein the pH is adjusted to a value within a range of 6.5 to 12.5 in a water-diluted state. A cleaning composition for cleaning an object to be cleaned in a cloudy state while containing 50 to 1900 parts by weight of water with respect to 100 parts by weight of the stock solution for the cleaning composition,
The stock solution for the detergent composition is
As the first organic solvent, a hydrocarbon compound or an aromatic compound having an SP value in the range of 6.5 to 12, and
As the second organic solvent, a nitrogen-containing compound or a sulfur-containing compound having an SP value in the range of 8 to 15,
As the third organic solvent, an ester compound having an SP value in the range of 8 to 12,
Including
For 100 parts by weight of the first organic solvent,
The blending amount of the second organic solvent is a value within the range of 5 to 1400 parts by weight,
A cleaning composition, wherein the amount of the third organic solvent is set to a value in the range of 5 to 1400 parts by weight. A mixing step of mixing 50 to 1900 parts by weight of water with respect to 100 parts by weight of the stock solution for the cleaning composition;
A cleaning method including cleaning a target object in a cloudy state,
The stock solution for the detergent composition is
As the first organic solvent, a hydrocarbon compound or an aromatic compound having an SP value in the range of 6.5 to 12, and
As the second organic solvent, a nitrogen-containing compound or a sulfur-containing compound having an SP value in the range of 8 to 15,
As the third organic solvent, an ester compound having an SP value in the range of 8 to 12,
Including
For 100 parts by weight of the first organic solvent,
The blending amount of the second organic solvent is a value within the range of 5 to 1400 parts by weight,
A cleaning method, wherein a blending amount of the third organic solvent is set to a value within a range of 5 to 1400 parts by weight.

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