JPH08113869A - Dry-cleaning method for clothes and combined dry-cleaning solution therefor - Google Patents

Abstract

PURPOSE: To provide a dry-cleaning method for clothes capable of cleaning and removing oil-soluble, insoluble and water-soluble stains and free from troubles such as the wrinkle, shrink and dye bleeding of clothes. CONSTITUTION: Dry-cleaning of clothes is carried out by using two different kinds of dry-cleaning solutions A and B in two steps comprising the cleaning of clothes first with the dry-cleaning solution A and the cleaning of the cleaned clothes with the dry-cleaning solution B. The dry-cleaning solution A has a water-content of <=5wt.% based on the organic solvent in the solution and the dry-cleaning solution B has a water-content adjusted to 10-30wt.% based on the organic solvent in the solution.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for dry-cleaning clothes and a combination solution for dry-cleaning used therein.

[0002]

2. Description of the Related Art Conventional cleaning methods for clothes are roughly classified into a dry cleaning method and a water washing (wet cleaning method).

The above dry cleaning method generally
This is done as follows. First, tetrachloroethylene, 1,1,1-trichloroethane, 1,1,2-trichloro-1,2,2-trifluoroethane, petroleum hydrocarbon was used as a solvent, and 1.0 wt% (hereinafter referred to as " %)) To prepare a dry cleaning solution. Next, add clothes to this dry cleaning solution,
Washing is performed once, or twice using the same dry cleaning solution, and further washing three times using the same dry cleaning solution. In such a dry cleaning method, the solvent contained in the dry cleaning solution has poor compatibility with water,
If 0.5% or more of water is mixed in the dry cleaning solution, the dry cleaning solution becomes emulsified, becomes cloudy,
There is a problem that the filter that circulates and cleans the dry cleaning solution by clogging is clogged. In addition, there is a problem that only moisture is adsorbed on the clothing, and the clothing is likely to have fine lines, shrinkage, and color tearing. Therefore, the usual dry cleaning method employs a method of cleaning for 5 to 15 minutes without adding water to the dry cleaning solution.

On the other hand, the wet cleaning method is
A method of washing clothes, such as suits, skirts, and sweaters, which should be dry-cleaned originally, for example, using warm water of 40 ° C or less, neutral detergent, etc. without moving or gently shaking the clothes. Is.

[0005]

However, the conventional dry cleaning method as described above can satisfactorily remove oil-soluble stains and insoluble (dust, soot, etc.) stains, but water-soluble stains. Regarding, it is difficult to remove.
Therefore, even if water is added to the dry cleaning solution to improve the removal of the water-soluble stain, the degree of the removal is still insufficient and the water content in the dry cleaning solution is increased. Problems (clogging of filters, fine wrinkles of clothing, shrinkage, crying, etc.) will occur.

The wet cleaning method described above is
Contrary to the dry cleaning method, it is good in removing water-soluble stains, but is insufficient in removing oil-soluble stains and insoluble stains. Moreover, since the clothes are soaked in water, fine wrinkles on the clothes,
There is a problem that shrinkage is likely to occur and a long drying time is required.

The present invention has been made in view of the above circumstances, and is capable of satisfactorily washing and removing all oil-soluble, insoluble and water-soluble dirt, and has fine wrinkles for clothes.
It is an object of the present invention to provide a dry-cleaning method for clothes that does not cause defects such as shrinkage and color tearing, and a dry-cleaning combination solution used therefor.

[0008]

In order to achieve the above object, the present invention is a method for dry-cleaning clothes using two different types of dry-cleaning solutions A and B shown below. A first aspect of the dry cleaning method for clothes is to wash clothes using the dry cleaning solution A, and then wash the clothes washed using the dry cleaning solution A with the dry cleaning solution B. And (A) A dry cleaning solution containing a water-soluble organic solvent, wherein the water content is set to 5% or less of the organic solvent in the dry cleaning solution. (B) A dry cleaning solution containing a water-soluble organic solvent, wherein the water content is set in the range of 10 to 30% with respect to the organic solvent in the dry cleaning solution.

Further, a dry cleaning combination solution consisting of two different types of dry cleaning solutions A and B shown below is the second gist. (A) A dry cleaning solution A containing the components (a) and (b) shown below. (A) Water-soluble organic solvent. (B) Surfactant. [However, the water content in the dry cleaning solution A is set to 5% or less with respect to the organic solvent in the dry cleaning solution A. (B) A dry cleaning solution B containing the components (a) and (b) shown below. (A) Water-soluble organic solvent. (B) Surfactant. [However, the water content in the dry cleaning solution B is set in the range of 10 to 30% with respect to the organic solvent in the dry cleaning solution B. ]

[0010]

That is, according to the present invention, two kinds of dry cleaning solutions A and B having different water contents are prepared, and first, the clothes are washed with the dry cleaning solution A having a small water content. The dry cleaning method is a two-step cleaning process in which the clothes washed with the dry cleaning solution A having a low water content are successively washed with the dry cleaning solution B having a high water content. Therefore, oil-soluble and insoluble stains can be washed and removed by the dry cleaning solution A, and then water-soluble stains can be washed and removed by the dry cleaning solution B. in this way,
By passing through a two-step cleaning process using two kinds of dry cleaning solutions A and B, it becomes possible to satisfactorily wash and remove all the stains having different properties. Moreover,
Since the water-soluble organic solvent is used, the compatibility between the solvent and water becomes good, so that only moisture is not adsorbed on the clothing, and shrinkage of the clothing, fine wrinkles, and the occurrence of color tear can be suppressed. .

The above-mentioned water solubility in the water-soluble organic solvent, which is one of the constituents of the dry cleaning combination solution used in the present invention, means in the present invention that water is dissolved in the organic solvent by 5% or more. Moreover, it means that the solution in which water is dissolved is uniform and transparent.

Next, the present invention will be described in detail.

A dry cleaning combination solution is used in the method for dry cleaning clothes according to the present invention. This dry cleaning combination solution is 2
It is composed of different types of dry cleaning solutions (dry cleaning solution A, dry cleaning solution B).

First, one of the two different types of dry cleaning solutions, the dry cleaning solution A, will be described.

Dry cleaning solution A, which is one of the above-mentioned dry cleaning solutions, is obtained by using a water-soluble organic solvent (a component) and a surfactant (b component) and is in a liquid state.

As the water-soluble organic solvent (a component),
Alcohols such as 3-methoxy-3-methyl-1-butanol, isopropyl alcohol and isobutyl alcohol, glycols such as ethylene glycol, propylene glycol and dipropylene glycol, diethylene glycol dimethyl ether, diethylene glycol monomethyl ether, propylene glycol monomethyl ether and propylene glycol. Examples thereof include glycol ethers such as monoethyl ether. These may be used alone or in combination of two or more.

Among the above water-soluble organic solvents (component a), it is preferable to use 3-methoxy-3-methyl-1-butanol, propylene glycol, propylene glycol monoethyl ether and diethylene glycol dimethyl ether. And from the viewpoint of cleaning efficiency,
It is particularly preferable to use 3-methoxy-3-methyl-1-butanol.

The surfactant (component (b)) used together with the water-soluble organic solvent (component (a)) is an essential component constituting a dry cleaning detergent conventionally used in dry cleaning.

As the above-mentioned surfactant (component b), an anionic surfactant, a cationic surfactant, a nonionic surfactant and the like are used. Examples of the anionic surfactant include alkyl benzene sulfonate, alkyl sulfate ester salt, alkyl phosphate and the like. Examples of the above-mentioned cationic surfactant include alkyl trimethyl ammonium salt, dialkyl dimethyl ammonium salt and the like. And, as the nonionic surfactant,
For example, sorbitan fatty acid ester, glycerin fatty acid ester, polyoxyethylene alkylphenyl ether, polyoxyethylene alkyl ether and the like can be mentioned. In particular, it is preferable to use an alkyltrimethylammonium salt from the viewpoint of imparting flexibility and antistatic properties to clothing.

In addition to the components a and b, water, a diluting solvent, and a coupling agent may be added to the dry cleaning solution A, if necessary.

Examples of the diluent solvent include the same as the water-soluble organic solvent (component a).

The above-mentioned coupling agent is used for making the dry cleaning detergent transparent and having good cold resistance, and for making it liquid, and is not particularly limited, and conventionally known ones are used. . Examples thereof include diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, hexylene glycol and the like. In particular, it is preferable to use hexylene glycol because it has a low boiling point and is easily dried.

The water content of the dry cleaning solution A composed of the above-mentioned components must be set to 5% or less with respect to all the organic solvent components in the solution A. That is, if the water content exceeds 5%, the effect of removing oil-soluble and insoluble stains decreases. Thus, in the dry cleaning solution A, the blending components must be adjusted so that the water content is 5% or less.

The dry cleaning solution A is prepared, for example, as follows. That is, first, the b component which is an essential component and, if necessary, water, a diluting solvent,
A dry cleaning detergent is prepared by mixing and mixing a coupling agent. Then, the dry cleaning solution A is prepared by blending the dry cleaning detergent with the water-soluble organic solvent as the component a.
At this time, as described above, the water content in the dry cleaning solution A is adjusted to 5% or less with respect to the organic solvent component in the solution A.

Next, the blending ratio of each of the above components will be described. First, the component b has the same blending ratio as that of the conventionally used dry cleaning detergent. Specifically, the compounding amount of the surfactant as the component b is set in the range of 10 to 50% of the entire dry cleaning detergent, and the compounding amount of the coupling agent to be compounded as necessary is It is preferably set to 30% or less of the entire cleaning detergent.

The amount of the water-soluble organic solvent (a component) is 94 to 9 based on the total amount of the dry cleaning solution A.
It is preferable to set it within the range of 9.5%.
That is, if the content of the component a is less than 94%, the effect of removing oil-soluble and insoluble stains decreases, and conversely 99.5%.
If it exceeds, the flexibility and antistatic property of the clothing tends to be weakened.

Next, another solution of the dry cleaning combination solution, the dry cleaning solution B, will be described.

The dry cleaning solution B is obtained by using a water-soluble organic solvent (a component) and a surfactant (b component) and is in a liquid state.

As the water-soluble organic solvent (a component) and the surfactant (b component), the same components as the a and b components of the dry cleaning solution A are used. Of the components a and b that are components of the dry cleaning solution B, particularly preferable components are the same as the preferable components when forming the dry cleaning solution A.
That is, also in the case of the dry cleaning solution B, 3-methoxy-3-methyl-1-butanol is particularly preferably used as the water-soluble organic solvent, and alkyltrimethylammonium salt is particularly preferably used as the surfactant.

As with the dry cleaning solution A, water, a diluting solvent, and a coupling agent may be added to the dry cleaning solution B, if necessary, in addition to the components a and b. As the water, the diluting solvent, and the coupling agent, those similar to the dry cleaning solution A are used. And, if a coupling agent is used if necessary, hexylene glycol is particularly preferably used.

The dry cleaning solution B composed of the above components must be set so that the water content thereof is in the range of 10 to 30% with respect to all the organic solvent components in the solution B. That is, when the water content is less than 10%, the effect of removing water-soluble stains is low, and when it exceeds 30%, fine wrinkles and shrinkage of the clothing are likely to occur and the drying property tends to deteriorate. Because. in this way,
In the dry cleaning solution B, the blending components must be adjusted so that the water content is within the above range.

The dry cleaning solution B is prepared in the same manner as the dry cleaning solution A, for example. That is, first, a dry cleaning detergent is prepared by mixing and mixing the above-mentioned component b which is an essential component and, if necessary, water, a diluting solvent and a coupling agent. Next, a dry cleaning solution B is prepared by mixing this dry cleaning detergent and the water-soluble organic solvent which is the component a. At this time, as described above, the water content in the dry cleaning solution B is
It is prepared so as to be in the range of 10 to 30% with respect to all the organic solvent components in the solution B.

Next, the blending ratio of each of the above components will be described. First, as with the dry cleaning solution A, the component b has the same blending ratio as that of the conventionally used dry cleaning detergent. Specifically, b
The content of the surfactant, which is a component, is set in the range of 10 to 50% of the total dry cleaning detergent, and the content of the coupling agent to be added as necessary is 30% of the total dry cleaning detergent. It is preferable to set as follows.

The amount of the water-soluble organic solvent (a component) is 69 to 90 based on the total amount of the dry cleaning solution B.
It is preferable to set it within the range of%. That is, if the content of the component a is less than 69%, the drying property tends to deteriorate, and conversely, if it exceeds 90%, the effect of removing water-soluble stains tends to decrease.

The dry cleaning of the clothes in the present invention is carried out using the dry cleaning solution A and the dry cleaning solution B, for example, as follows. That is, first, in the cleaning apparatus shown in FIG.
Open the valves 5, 6, 10 and 11 to open the first tank 1 in advance.
The dry cleaning solution A is circulated between the first filter-equipped tank 2 and the cleaning treatment tank 3. By this circulation,
The first tank 1 and the tank 2 with the first filter are filled with the dry cleaning solution A. And the cleaning treatment tank 3
The clothes to be washed are put into the inside and sealed, and the dry cleaning solution A is pumped from the first tank 1 by the pump 4.
Is pumped up through the tank 2 with the first filter and filled in the cleaning treatment tank 3. After fully immersing the clothes in the dry cleaning solution A, the dry cleaning solution A
While passing through the first tank 1 from the cleaning treatment tank 3 to the first filter tank 2 and from the first filter tank 2 to the cleaning treatment tank 3 for 3 to 10 minutes of cleaning (first
Cleaning process). Alternatively, at the time of the cleaning step, the circulation of the dry cleaning solution A is closed by closing the valves 5 and 6, so that the cleaning tank 3 does not pass through the first tank 1 and then passes through the tank 2 with the first filter and again. It may be circulated in the cleaning treatment tank 3. In this way, after the completion of the first cleaning step, the dry cleaning solution A is drained from the cleaning processing tank 3, and the drained dry cleaning solution A is drained.
Are returned to the first tank 1.

Then, as in the first cleaning step, each valve 1
2, 13, 15, 16 are opened, and the dry cleaning solution B is circulated between the second tank 7, the second filter-equipped tank 8 and the cleaning treatment tank 3 in advance. By this circulation, the dry cleaning solution B is filled in the second tank 7 and the second tank 8 with the filter. Then, the dry cleaning solution B is supplied to the second tank 7 from the second tank 7 by the pump 9.
It is pumped through the tank 8 with a filter and filled in the cleaning treatment tank 3. After sufficiently immersing the clothes (the first cleaning step) in the cleaning treatment tank 3 with the dry cleaning solution B, the dry cleaning solution B passes from the cleaning treatment tank 3 through the second tank 7 and Cleaning is performed for 3 to 10 minutes while circulating the cleaning tank 3 from the tank 8 with filter and the tank 8 with second filter (second cleaning step). Alternatively, at the time of the cleaning step, by circulating the circulation of the dry cleaning solution B by closing the valves 12 and 13, the cleaning tank 3 is passed through the tank 8 with the second filter without passing through the second tank 7 and is again cleaned. It may be circulated in the processing tank 3.
After completion of the second cleaning step, the dry cleaning solution B is drained from the cleaning processing tank 3, and the drained dry cleaning solution B is returned to the second tank 7. After the dry cleaning solution B has been drained, the clothes are taken out of the cleaning treatment tank 3 and transferred to a dryer according to a conventional method to dry the clothes. Dry cleaning of clothes is performed by such a method.

The dry cleaning method has been described with respect to the case of using a two-bath type (first tank 1 and second tank 7) washing machine, but the invention is not limited to this.
For example, a one-bath type (only one dry cleaning solution tank) washing machine may be used. In this case, after the completion of the first cleaning step, the dry cleaning solution A is extracted from the solution tank, the dry cleaning solution B is newly filled, and the second cleaning step is performed.

As described above, the method for dry-cleaning clothes according to the present invention uses two different types of dry-cleaning solutions A and B to perform a two-step cleaning process (first cleaning process and second cleaning process). It is characterized by passing through.
Moreover, in the first washing step, the clothes are washed with the dry cleaning solution A having a low water content (5% or less), and then the clothes washed with the dry cleaning solution A have a high water content ( Wash with dry cleaning solution B (10-30%). This makes it possible to wash and remove oil-soluble and insoluble stains in the first washing step, and wash and remove water-soluble stains in the second washing step. In this case, if the order of using the dry cleaning solutions A and B is reversed, that is, the first cleaning step and the second cleaning step are reversed, the following problems occur, and therefore the clothing of the present invention The effect of the dry cleaning method cannot be obtained. First, the clothing is washed with the dry cleaning solution B having a high water content (10 to 30%), and then the water content having a low water content (5% is used).
Hereinafter, when the clothes are washed with the dry cleaning solution A, a large amount of water is contained in the clothes during the previous cleaning step of the dry cleaning solution B, and the oil-solubility is increased in the subsequent cleaning step using the dry cleaning solution A. And the effect of removing insoluble dirt is significantly reduced.

[0039]

As described above, according to the present invention, the clothes are washed with the dry cleaning solution A having a low water content (5% or less) (first washing step), and then the dry cleaning solution A is used. This is a two-stage dry cleaning method in which the washed clothes are washed with a dry cleaning solution B having a high water content (10 to 30%) (second washing step). Therefore, first, it is possible to wash and remove the oil-soluble and insoluble stains in the first washing step, and to wash and remove the water-soluble stains in the second washing step. Therefore, as compared with the conventional cleaning method which was capable of cleaning and removing only one of the stains (oil-soluble and insoluble stains or water-soluble stains), it has an excellent cleaning effect on all the stains. Demonstrate. Further, it is possible to say that this is an excellent dry-cleaning method for clothes because the wrinkles, shrinkage, and tearing of the washed clothes are suppressed.

Next, examples will be described together with comparative examples.

First, prior to the examples, each of the following contaminated cloths was prepared as an evaluation cloth for cleaning, and these contaminated cloths and clean white cloths (wool, cotton, polyester, acrylic,
And a total of 20 kg of cleaning cloth were prepared.

Wool to which artificial sebum and cleaner dust had adhered was prepared as an oil-soluble contaminated cloth. As the oil-soluble contaminated cloth, a polyester cloth with artificial sebum and cleaner dust attached was prepared. As the insoluble stain cloth, a wool carbon stain cloth according to the Japan Oil Chemistry Society was prepared. As a water-soluble contaminated cloth, wool was immersed in a solution of soy sauce diluted 5 times with water, squeezed with a mangle to prepare an air-contaminated cloth. As a water-soluble contaminated cloth, a polyester cloth was dipped in a solution of soy sauce diluted 5 times with water, squeezed with a mangle and air-dried to prepare a polyester contaminated cloth.

[Preparation of Dry Cleaning Detergent] Next, a dry cleaning detergent was prepared according to the following respective components and respective compounding amounts.

Lauryl trimethyl ammonium methyl sulphate 20 parts Polyoxyethylene lauryl ether 20 parts Water 10 parts 3-Methoxy-3-methyl-1-butanol 50 parts --------------- −−−−−−−−−−−−−−−− Total 100 parts

[0045]

Example 1 A two-bath type dry cleaner (manufactured by Sanko Washing Machine Co., Ltd.) was prepared as a washing machine. On the other hand, 3-methoxy-3 was added as a water-soluble organic solvent to the dry cleaning detergent.
400 liters of -methyl-1-butanol was added to prepare a dry cleaning solution A so that the concentration of the dry cleaning detergent was 0.3%. Then, in the two-bath dry cleaner shown in FIG. 1, each valve 5, 6, 10,
11 was opened, and the dry cleaning solution A prepared above was circulated between the first tank 1, the first filter-equipped tank 2 and the cleaning treatment tank 3 in advance. By this circulation, the dry cleaning solution A was filled in the first tank 1 and the first filter-equipped tank 2. Then, in the cleaning treatment tank 3,
A cleaning cloth was charged and sealed, and the dry cleaning solution A was pumped from the first tank 1 by the pump 4 through the tank 2 with the first filter and filled in the cleaning treatment tank 3. After sufficiently immersing the cleaning cloth in the dry cleaning solution A, the dry cleaning solution A is passed from the cleaning treatment tank 3 through the first tank 1 to the first filter tank 2 and the first filter tank 2 Was washed for 5 minutes while circulating in the cleaning treatment tank 3 (first cleaning step). The water content at this time was 1%. The water content is a value with respect to the total amount of water contained in the cleaning cloth and water contained in the dry cleaning detergent. After the completion of the first cleaning step, the dry cleaning solution A was drained from the cleaning processing tank 3, and the drained dry cleaning solution A was returned to the first tank 1. .

Next, as in the first cleaning step, each valve 1
2, 13, 15 and 16 are opened, and dry cleaning is performed in advance by adjusting the concentration of the dry cleaning detergent to 0.3% between the second tank 7, the second tank 8 with the filter and the cleaning treatment tank 3. Solution B (using 3-methoxy-3-methyl-1-butanol as water-soluble organic solvent) was circulated. By this circulation, the second tank 7 and the second tank
The tank 8 with a filter was filled with the dry cleaning solution B. Then, the dry cleaning solution B was pumped from the second tank 7 by the pump 9 through the tank 8 with the second filter and filled in the cleaning treatment tank 3. After thoroughly immersing the cleaning cloth (which has undergone the first cleaning step) in the cleaning treatment tank 3 with the dry cleaning solution B, the dry cleaning solution B is passed from the cleaning treatment tank 3 through the second tank 7. Cleaning was performed for 5 minutes while circulating the tank 8 with the second filter and the tank 8 with the second filter into the cleaning treatment tank 3 (second cleaning step). The water content at this time is 15
%Met. After completion of the second cleaning step, the dry cleaning solution B was drained from the cleaning processing tank 3, and the drained dry cleaning solution B was returned to the second tank 7. Then, after the liquid removal of the dry cleaning solution B was completed, the cleaning cloth was taken out from the cleaning treatment tank 3 and transferred to a dryer to dry the cleaning cloth (drying temperature 60 ° C. × drying time 25 minutes).

[0047]

Examples 2 to 4 The water content in the first cleaning step and the water content in the second cleaning step were changed to the values shown in Table 1 below. Otherwise, the dry cleaning was performed in the same manner as in Example 1.

[0048]

Comparative Examples 1 to 4 The washing time shown in Table 1 below was set. Then, the dry cleaning solution A used in the first cleaning step of Example 1 was used to perform dry cleaning only in the first cleaning step, and the cleaning cloth was transferred to a dryer to dry the clothes (drying temperature 60 (° C. × drying time 25 minutes) (Comparative Examples 1 and 3). Further, the dry cleaning solution B used in the second cleaning step of Example 1 was used to perform dry cleaning only in the second cleaning step, and the dry-cleaned cleaning cloth was transferred to a dryer to be dried (drying temperature). 60 ° C. × drying time 25 minutes) (Comparative Example 2,
4).

[0049]

[Comparative Examples 5 and 6] The first cleaning step and the second cleaning step were set as shown in Table 1 below. That is, the water content in the first cleaning step was set to be higher than the water content in the second cleaning step. Dry cleaning was performed with the above settings, and the dry-cleaned cleaning cloth was transferred to a dryer and dried (drying temperature 60 ° C. × drying time 25 minutes).

[0050]

Conventional Example 1 A conventional petroleum hydrocarbon (mixture of paraffin and naphthene) was used as a solvent, and a dry cleaning detergent (Genb Clean K2 manufactured by Genbu Co.) was added to the solvent in an amount of 0.5% to dry the solvent. Normal dry cleaning with the cleaning solution was performed. The cleaning time was 10 minutes, and the water content was set to 0.05%.

[0051]

Conventional Example 2 Normal wet cleaning was performed using warm water at 40 ° C. containing 0.2% of a neutral detergent (manufactured by Genb Co., Ltd.). The cleaning time was 10 minutes and was performed by a light rotary cleaning process.

[0052]

[Table 1]

The cleaning efficiency, recontamination rate, and shrinkage rate of the cleaning cloth thus cleaned were measured and evaluated. The results are shown below in Tables 2 and 3. The above measurement was performed as follows.

[Washing Efficiency] The whitenesses of the clean white cloth and each of the contaminated cloths before and after the cleaning are measured with TC-1 manufactured by Tokyo Denshoku Co., Ltd.
It was measured by 500 MC. Then, the cleaning efficiency (%) was calculated by the formula shown below.

[0055]

[Equation 1]

[Recontamination Rate] A clean white cloth (wool, cotton, polyester, acrylic,
For silk, the whiteness before washing (original whiteness) and the whiteness after washing were measured by TC-1500MC manufactured by Tokyo Denshoku Co., Ltd. Then, the redeposition rate (%) was calculated by the following formula.

[0057]

[Equation 2]

[Shrinkage Rate] A wool cloth having a size of 50 cm × 50 cm, a frame of 30 cm × 30 cm is written with a cleaning pen, washed and dried, and then taken out, and the length of the frame is set to both length and width. Each was measured. Then, the shrinkage rate (%) was calculated by the following formula.

[0059]

(Equation 3)

[0060]

[Table 2]

From the results of Table 2 above, in Comparative Examples 1 and 3, the stain-resistant cloths, which are oil-soluble and insoluble, have excellent cleaning efficiency, but they are water-soluble stain-resistant cloths. On the other hand, the cleaning efficiency is low. Further, in Comparative Examples 2 and 4, conversely, the cleaning efficiency is excellent for the water-soluble contaminated cloth and the contaminated cloth, which is an oil-soluble and insoluble contaminated cloth. Low. On the other hand, in all the examples, it can be seen that all the contaminated cloths have excellent cleaning efficiency.

[0062]

[Table 3]

From the results shown in Table 3 above, the shrinkage rate is high in Comparative Examples 2 and 4. On the other hand, in the examples, the recontamination rate was low and the shrinkage rate was also low.

[0064]

Examples 5 to 7 As a water-soluble organic solvent, diethylene glycol dimethyl ether was used instead of 3-methoxy-3-methyl-1-butanol. Other than that, dry cleaning was performed in the same manner as in Example 1. The cleaning time, the dry cleaning detergent, and the water content are also shown in Table 4 below.

[0065]

[Comparative Examples 7 and 8] The cleaning time was set as shown in Table 4 below. Then, the dry cleaning solution used in the first cleaning step of Example 5 was used to perform dry cleaning only in the first cleaning step, and the cleaning cloth was transferred to a dryer to dry the clothes (drying temperature 60 ° C.). × Drying time 25 minutes)
(Comparative example 7). Further, the dry cleaning solution used in the second cleaning step of Example 5 was used to perform dry cleaning only in the second cleaning step, and the cleaning cloth was transferred to a dryer to dry the clothes (drying temperature 60 ° C.). × Drying time 2
5 minutes) (Comparative Example 8).

[0066]

Comparative Examples 9 and 10 The first cleaning step and the second cleaning step were set as shown in Table 4 below. That is, the water content in the first cleaning step was set to be higher than the water content in the second cleaning step. Dry cleaning was carried out in such a setting, and the cloth for cleaning was transferred to a dryer to dry the clothes (drying temperature 60 ° C. × drying time 25 minutes).

[0067]

[Table 4]

With respect to the cleaning cloth thus cleaned, the cleaning efficiency, the redeposition rate and the shrinkage rate were measured and evaluated in the same manner as described above. The results are shown below in Tables 5 and 6.

[0069]

[Table 5]

From the results shown in Table 5 above, in Comparative Example 7, the oil-soluble and insoluble soiled cloths, ~, have excellent cleaning efficiency, but the water-soluble soiled cloths and the soiled cloths have excellent cleaning efficiency. Is extremely low. Further, in Comparative Example 8, conversely, it is excellent in cleaning efficiency with respect to the contaminated cloth which is the water-soluble contaminated cloth, but the cleaning efficiency with respect to the contaminated cloth which is the oil-soluble and insoluble contaminated cloth is low. On the contrary,
It can be seen that all Examples 5 to 7 have excellent cleaning efficiency for all the contaminated cloths.

[0071]

[Table 6]

From the results shown in Table 6 above, the recontamination ratio of the example is slightly lower than that of the comparative example.

[Brief description of drawings]

FIG. 1 is a dry cleaning 2 used in the present invention.
It is a block diagram which shows a bath-type washing machine.

Claims (4)

[Claims] 1. A method of dry-cleaning clothing using the following two different types of dry cleaning solutions A and B, wherein the clothing is first cleaned using the dry cleaning solution A, and then: A method for dry-cleaning clothes, which comprises washing clothes washed with the dry cleaning solution A with the dry cleaning solution B. (A) A dry cleaning solution containing a water-soluble organic solvent, wherein the water content is set to 5% by weight or less based on the organic solvent in the dry cleaning solution. (B) A dry cleaning solution containing a water-soluble organic solvent, wherein the water content is set in the range of 10 to 30% by weight based on the organic solvent in the dry cleaning solution. 2. The method for dry-cleaning clothing according to claim 1, wherein the water-soluble organic solvent contained in both the dry cleaning solutions A and B is 3-methoxy-3-methyl-1-butanol. 3. A dry cleaning combination solution comprising two different dry cleaning solutions A and B shown below. (A) A dry cleaning solution A containing the components (a) and (b) shown below. (A) Water-soluble organic solvent. (B) Surfactant. [However, the water content in the dry cleaning solution A is set to 5% by weight or less with respect to the organic solvent in the dry cleaning solution A. (B) A dry cleaning solution B containing the components (a) and (b) shown below. (A) Water-soluble organic solvent. (B) Surfactant. [However, the water content in the dry cleaning solution B is set in the range of 10 to 30% by weight with respect to the organic solvent in the dry cleaning solution B. ] 4. The dry cleaning combination solution according to claim 3, wherein the water-soluble organic solvent of the component (a) contained in both the dry cleaning solutions A and B is 3-methoxy-3-methyl-1-butanol. .