JP5525397B2 - How to treat cotton fabric - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a method for treating cotton cloth, and more particularly to a method for treating cotton cloth that imparts water diffusion promoting ability to cotton cloth that is in direct contact with the skin, and a water diffusion accelerator used in the treatment method.

Since cotton cloth has the property of absorbing moisture quickly, it is widely used in clothing such as underwear and T-shirts that directly touch the skin. There is a disadvantage that uncomfortable feeling such as that occurs and it lasts for a long time.
Therefore, conventionally, a cool-sensitive cloth and the like that have improved the cool-feel when wearing clothes have been proposed.
For example, a cloth (refer to Patent Document 1) formed with hydrophilic fibers such as cotton and rayon and hydrophobic fibers such as polyester and controlling the average deviation of the cloth surface roughness, the surface is composed of hydrophobic fibers, Cloth for clothing having a multilayer structure in which part of the back surface and / or intermediate layer is composed of cellulose multifilament (see Patent Document 2), porous inorganic powder particles containing a water-absorbing polymer, natural fibers such as cotton, and synthetic fibers A fiber product (see Patent Document 3) obtained by gripping a fiber such as a fiber is known.
However, since these fiber treatment techniques are applied at the time of manufacturing a cloth or a textile product and cannot be post-processed into the cloth or the textile product, they cannot be applied to cotton clothing usually worn in general households.

On the other hand, Patent Document 4 includes (a) a cationic surfactant, (b) an aromatic carboxylate or an aromatic sulfonate that does not exhibit surface activity, and (b) component (b) with respect to component (a). A liquid softener composition having a blending molar ratio of less than 1: 0.7 is described.
This liquid softening agent composition imparts flexibility to the garment at the time of rinsing during the washing process of the garment. In addition, (b) an aromatic carboxylate or aromatic sulfonate having virtually no surface activity is used to make the appearance of a liquid softener composition containing (a) a cationic surfactant transparent. It is not supposed to be used for imparting water diffusion promoting ability by adhering a specific amount to a cotton cloth that is in direct contact with the skin before wearing, and there is no such suggestion.

JP-A-4-370251 Japanese Patent Laid-Open No. 10-25643 JP 2002-235278 A Japanese Patent Laid-Open No. 7-3650

Cotton cloth is suitable as an underwear material because it is excellent in water absorption and moisture absorption, and is comfortable to wear. However, since cotton fiber has the property of absorbing moisture to the inside of the fiber, it is made of cotton fiber. For example, only the sweated part is locally in a state of high water content, and the cloth has a problem that the discomfort such as a sticky feeling is sustained and the body temperature is taken away in a cold environment.
The present invention makes use of the inherent characteristics of cotton fabric, lowers the local moisture content, and increases the transpiration of moisture, thereby preventing the feeling of stickiness due to sweat and the feeling of coldness after sweating. It is an object of the present invention to provide a treatment method for imparting water diffusion promoting ability to a cotton cloth that directly touches the skin, and a water diffusion promoting agent that imparts water diffusion promoting ability to a cotton cloth that directly touches the skin, which can improve the pleasant feeling.

The present inventors attach a specific benzene monosulfonic acid derivative to a cotton fabric that is in direct contact with the skin by adhering a relatively large amount compared to the processing amount (spray amount) of a general aerosol agent. It has been found that the water diffusibility of the cloth can be improved and the above-mentioned problems can be solved.
That is, the present invention provides the following [1] and [2].
[1] A benzene monosulfonic acid derivative (A) represented by the following general formula (1) is attached to a cotton cloth before wearing in direct contact with the skin in an amount of 0.1 to 50 mass% per mass of the cotton cloth. A method for treating cotton fabric, which imparts water diffusion promoting ability to the cotton fabric.

(In the formula, R ¹ represents a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, or an alkanolamine, and R ^{2 to} R ⁶ each independently represents a hydrogen atom, a hydroxyl group, or a hydrocarbon having 1 to 4 carbon atoms. Group.)
[2] A water diffusion accelerator used in the method for treating a cotton fabric according to [1], comprising the benzene monosulfonic acid derivative (A) represented by the general formula (1).

  According to the present invention, while making use of the original characteristics of cotton cloth, the local moisture content is lowered, and the transpiration of moisture is increased, so that the feeling of stickiness due to sweat, the feeling of cooling after sweating, etc. It is possible to provide a cotton cloth treatment method for imparting water diffusion promoting ability to a cotton cloth that is in direct contact with skin, and a water diffusion accelerator used in the cotton cloth treatment method.

<Method for treating cotton cloth that imparts water diffusion promoting ability to cotton cloth>
The cotton cloth treatment method for imparting water diffusion promoting ability to the cotton cloth of the present invention is a benzene monosulfonic acid derivative (A) represented by the general formula (1) (hereinafter also simply referred to as “compound (A)”). ) Is adhered to a cotton cloth before wearing that directly contacts the skin in an amount of 0.1 to 50 mass% per mass of the cotton cloth.
Here, “cotton cloth” is a general term for textile products such as fabrics and woven fabrics that use a plurality (such as warp and weft) of cotton threads as a raw thread. Cotton threads are gathered by twisting cotton fibers, etc. Formed. Further, the cotton cloth may be partially blended with not only cotton fibers but also chemical fibers, but in order to enjoy the effects of the present application, the blend ratio of the cotton fibers is preferably 50% by mass or more. The content is more preferably at least mass%, and most preferably 100 mass%.
"Cotton cloth that comes into direct contact with the skin" is used for directly touching the skin of cotton cloth, such as underwear, T-shirts, jeans, etc., as well as towels or handkerchiefs for direct wear on the skin. Means cotton cloth.
"Water diffusion" means that the water that has contacted the cotton cloth moves on the surface of the cotton cloth from the contact area for a certain period of time, and apparently the phenomenon that the water spreads on the surface of the cotton cloth. To do.
“Water diffusion promoting ability” means the ability of water in contact with cotton cloth to move from the contacted part for a certain period of time, and “giving water diffusion promoting ability” means the water This means extending the travel distance.
As a method for evaluating the water diffusion accelerating ability, a method of measuring an area where water has spread on a cotton cloth for a certain period of time is simple, and can be specifically evaluated by the method described in the examples.

In the present invention, the reason why the compound (A) can impart water diffusion promoting ability to the cotton cloth is not necessarily clear, but is considered as follows.
When the cotton cloth comes into contact with water, the water (i) penetrates into the cotton fibers forming the cotton cloth, and (ii) moves into the gap between the cotton threads constituting the cotton cloth, and the cotton thread. It is considered that there are two types of movements: movement into the gap between the cotton fibers forming the.
Here, since the compound (A) in the water diffusion accelerator of the present invention moderately or partially hydrophobizes the inside of the cotton fiber while appropriately maintaining the hydrophilicity of the surface of the cotton fiber, the inside of the cotton fiber. It is considered that water can be easily transferred to the gap between the cotton yarns and the gap between the cotton fibers, that is, the water can spread more easily on the surface of the cotton cloth. . As a result, the cotton fabric treated with the compound (A) compared to the untreated cotton fabric reduces the moisture content of the cotton fabric in contact with the skin, and also evaporates the moisture over a larger area. Properties such as water absorbency, moisture absorption, and comfortable comfort inherent in cotton fabric are not impaired, and the sticky feeling due to sweat and the feeling of cooling after sweating can be greatly improved.
Conventional methods such as Patent Documents 1 to 3 make the entire fiber forming the fabric hydrophobic or hydrophilic, whereas the treatment method for imparting water diffusion promoting ability of the present invention is made of cotton fiber. By making the inside hydrophobic, the diffusion movement of water on the cotton cloth surface is promoted, and this is based on a novel idea completely different from the conventional method.

[Benzene monosulfonic acid derivative (A) represented by general formula (1)]
The benzene monosulfonic acid derivative (A) used in the present invention is represented by the following general formula (1).

(In the formula, R ¹ represents a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, or an alkanolamine, and R ^{2 to} R ⁶ each independently represents a hydrogen atom, a hydroxyl group, or a hydrocarbon having 1 to 4 carbon atoms. Group.)

In the general formula (1), examples of the alkali metal as R ¹ include sodium, potassium, and lithium, and examples of the alkaline earth metal include magnesium and calcium. Examples of the alkanolamine include monoethanolamine, diethanolamine, triethanolamine, N, N-diethylethanolamine, N, N-dimethylethanolamine, N-methylethanolamine, N-methyldiethanolamine and the like.
In R ¹ in the general formula (1), an alkali metal is preferable, sodium and potassium are more preferable, and sodium is still more preferable from the viewpoint of appropriately hydrophobizing the cotton fabric.
In the general formula (1), examples of the hydrocarbon group having 1 to 4 carbon atoms represented by R ^{2 to} R ⁶ include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, tert- Examples thereof include alkyl groups such as butyl group. Among these, methyl group and ethyl group are preferable, and methyl group is more preferable from the viewpoint of appropriately hydrophobizing cotton fabric.
Moreover, it is preferable that 1 or 2 of R < ² > -R < ⁶ > is a hydroxyl group.
Preferable examples of the benzene monosulfonic acid derivative (A) represented by the general formula (1) include one or more selected from benzenesulfonic acid, p-phenolsulfonic acid, p-toluenesulfonic acid, and salts thereof. Is mentioned. The salt is preferably an alkali metal salt or a salt of an alkanolamine having 1 to 6 carbon atoms, more preferably an alkali metal salt, more preferably a sodium salt or potassium salt, and still more preferably a sodium salt.

[Cotton processing method that imparts water diffusion promoting ability]
In the method for treating cotton cloth according to the present invention, the benzene monosulfonic acid derivative (A) represented by the general formula (1) is applied to a cotton cloth before wearing in direct contact with the skin, in an amount of 0.00 per mass of the cotton cloth. 1 to 50% by mass is deposited.
Here, “before wearing” means from the time of washing with a detergent composition containing a washing component until just before wearing.
“Wearing” generally means the act of wearing clothes such as underwear and T-shirts, but in this specification, in addition to this, it is applied to the skin after face washing, after bathing, or when sweating. It also includes the act of bringing a cotton cloth such as a towel or handkerchief into contact with the skin in order to wipe off the adhering moisture.

Specifically, in any one of the steps 1 to 5 shown below, it is preferable to treat the cotton cloth by the methods (i) and (ii) below.
Process 1 (cleaning process): The process of wash | cleaning the cotton cloth after wearing using the washing | cleaning liquid containing a washing | cleaning component.
Step 2 (Rinsing Step): A step of reducing the amount of the cleaning liquid adhering to the cotton cloth after Step 1.
For example, in a washing process using a washing machine, after the washing process, new water not containing a washing component is supplied to the cotton cloth to reduce the amount of washing liquid adhering to the cotton cloth. However, in order to rinse efficiently, the process (dehydration process) which reduces the quantity of the washing | cleaning liquid adhering to the cotton cloth by centrifugation etc. after the said washing | cleaning process is also included.
Step 3 (Step of removing water from cotton cloth): A step of reducing the amount of water adhering to the cotton cloth after Step 1 or Step 2.
For example, a process of reducing water adhering to cotton cloth by centrifugal operation with a washing machine.
Step 4 (Drying Step): A step of drying the cotton cloth after any of the steps 1 to 3.
For example, a process of natural drying at ambient temperature, or a process of drying with a dryer or the like.
Step 5 (storage step): Steps from after step 4 to immediately before wearing.
In order to efficiently adsorb the compound (A) to the cotton cloth, the water diffusion accelerator containing the compound (A) or the compound (A) is attached to the cotton cloth in any of the steps 2 to 5. It is preferable to make it.

(I) A method of treating cotton cloth (textile product) in a liquid bath.
When this method is carried out at home, the following methods (a) and (b) are common.
(A) A method of immersing cotton cloth (textile product) after adding a water diffusion accelerator containing compound (A) or compound (A) in a water bath using a wash basin or the like, or cotton cloth A method of adding a water diffusion accelerator containing compound (A) or compound (A) to a water bath in which (textile product) is immersed.
(B) A method in which a water diffusion accelerator containing compound (A) or compound (A) is added to the water bath of the washing machine for treatment, or a water diffusion accelerator containing compound (A) is directly applied to the washing machine A method of immersing cotton cloth (textile products) in a water bath.
In the case where the cotton fabric (fiber product) is treated in a liquid bath, a stirring or mixing operation can be appropriately performed so that the compound (A) uniformly adheres to the cotton fabric (fiber product). The cotton fabric (textile product) to which a predetermined amount of the compound (A) is adhered is used after drying.
When using a washing machine, a method of using a drum-type washing machine called a water-saving type that can reduce the amount of water used compared to a conventional fully automatic washing machine is simple. When using a washing machine, it can be used in the rinsing step after washing with the detergent composition.
In this case, from the viewpoint of efficiently attaching the compound (A) to the cotton cloth (textile product), the bath ratio (mass ratio of liquid bath / mass ratio of the textile product) is preferably 0.8 to 15, and 1 to 13 Is more preferable.

(Ii) A method of attaching to a cotton cloth (textile product) using a sprayer.
When implementing this method, a commercially available spray vial, a trigger type sprayer, etc. can be used. The atomizer to be used is preferably capable of ejecting the liquid preferably at a stroke of 0.1 to 3.0 g, more preferably 0.2 to 3.0 g, and still more preferably 0.3 to 2.0 g. As the trigger type sprayer, a pressure accumulation type as disclosed in Japanese Utility Model Laid-Open No. 4-37554 is preferable from the viewpoint of spray uniformity.
The compound (A) is preferably 0.1 to 45% by mass, more preferably 0.15 to 45% by mass, and more preferably 0.1% to 45% by mass, based on the mass of the cotton fabric (textile product) by the above methods (i) and (ii). The treatment is preferably performed so as to adhere 0.2 to 40% by mass, more preferably 0.5 to 35% by mass, still more preferably 1 to 33% by mass, and particularly preferably 3 to 30% by mass.

<Water diffusion accelerator that imparts water diffusion promoting ability to cotton fabric>
Compound (A) itself has a property that it is difficult to emulsify, disperse or solubilize in water. In order to enhance the effect of the compound (A), it is preferable to uniformly treat the compound (A) on a cotton cloth. Therefore, it is preferable to use a surfactant (B) and / or an organic solvent (C) that can emulsify, disperse or solubilize the compound (A) in the water diffusion accelerator.
That is, the water diffusion accelerator for imparting water diffusion promoting ability to the cotton fabric in direct contact with the skin of the present invention is the compound (A) and the surfactant (B) capable of emulsifying, dispersing or solubilizing the compound (A). And / or an organic solvent (C).
Here, the “water diffusion accelerator for imparting water diffusion promoting ability to cotton cloth” means “water diffusion of cotton cloth not treated with compound (A)” in “Evaluation of water diffusion promoting ability” described in the Examples. When the area is 100 (see Comparative Example 4 described later), it means a water diffusion accelerator that can make the relative value of the diffusion area 105 or more. The relative value of the diffusion area is preferably 110 or more, more preferably 115 or more, still more preferably 120 or more, and the upper limit is preferably 200 or less.

<Surfactant (B)>
Surfactant (B) can be selected from, for example, compound types described in “Introduction to Surfactant” (issued by Sanyo Kasei Kogyo Co., Ltd., first printing: June 11, 2007). However, the same compound as the compound (A) is excluded.
The surfactant (B) is at least one selected from anionic surfactants, cationic surfactants, amphoteric surfactants, and nonionic surfactants excluding compound (A). A cationic surfactant and a nonionic surfactant excluding the compound (A) are preferable, and a nonionic surfactant excluding the compound (A) is more preferable.

(Anionic surfactant)
Examples of the anionic surfactant include (i) alkylbenzene sulfonate, (ii) alkyl sulfate, (iii) polyoxyalkylene alkyl ether sulfate, (iv) α-olefin sulfonate, (v) α -Sulfo fatty acid alkyl ester salts, (vi) fatty acid salts and the like.
In the above description, the term “alkyl” is used. However, this “alkyl” is used for convenience, and means not only an alkyl group but also a “hydrocarbon group” in a broad sense. The carbon number is preferably 8 to 18, more preferably 10 to 16. The same applies to the following.
(I) Examples of the alkyl benzene sulfonate include those having an average carbon number of 8 to 16 or the like in the alkyl chain generally distributed in the detergent surfactant market, and alkyl benzene sulfones having an alkyl group having 10 to 14 carbon atoms. Acid salts are more preferred. For example, trade name: Neoperex F25 manufactured by Kao Corporation, trade name: Dobs102 manufactured by Shell, and the like can be given.
(Ii) The alkyl sulfate ester salt is preferably a sulfate ester salt having a hydrocarbon group having 10 to 16 carbon atoms.
(Iii) The polyoxyalkylene alkyl ether sulfate ester salt is preferably a sulfate ester salt having an average of 0.5 to 10 moles of a hydrocarbon group having 10 to 18 carbon atoms and an ethylene oxide group in the molecule. The average carbon number of the hydrocarbon group is preferably 10 to 16, and it is preferable to have an average of 0.5 to 6 moles of ethylene oxide groups in the molecule.
(Iv) The α-olefin sulfonate can be obtained by sulfonating an α-alkene having 8 to 18 carbon atoms with SO ₃ and hydrating / neutralizing. As the α-olefin sulfonate, a mixture of a compound having a hydroxy group in a hydrocarbon group and a compound having an unsaturated bond is preferable.
(V) The α-sulfo fatty acid lower alkyl ester salt is preferably a hydrocarbon group having 10 to 16 carbon atoms, more preferably a methyl ester or an ethyl ester.
(Vi) The fatty acid salt is preferably a fatty acid salt having 12 to 16 carbon atoms, and examples of the salt include alkali metal salts, alkaline earth metal salts, alkanolamine salts, ammonium salts and the like. Among these, sodium salts, potassium salts, magnesium salts, calcium salts, alkanolamine salts, and ammonium salts are preferable.
Among the above anionic surfactants, from the viewpoint of dissolving or dispersing the compound (A), (i) alkylbenzene sulfonate, (ii) alkyl sulfate, (iii) polyoxyalkylene alkyl ether sulfate Or (vi) fatty acid salts are more preferred.

(Cationic surfactant)
Examples of the cationic surfactant include primary to tertiary amine salt type surfactants and quaternary ammonium salt type surfactants.
More specifically, a cationic surfactant or the like having 1 to 3 hydrocarbon groups having 10 to 20 carbon atoms which may be separated by an ester group or an amide group in the molecule. In these, the quaternary ammonium salt or amine salt which has 1-2 hydrocarbon groups, such as a C10-C18 alkyl group, in a molecule | numerator is preferable. The counter ion of the quaternary ammonium salt is preferably a halogen ion or an alkyl sulfate ion having 1 to 2 carbon atoms, more preferably a chlorine ion, a methyl sulfate ion, or an ethyl sulfate ion. The amine salt can be obtained by neutralizing the amine compound with an inorganic acid or an organic acid.
(Amphoteric surfactant)
The amphoteric surfactant is preferably an amino acid type amphoteric surfactant or a carbobetaine type or sulfobetaine type amphoteric surfactant having a hydrocarbon group such as an alkyl group having 10 to 18 carbon atoms.

(Nonionic surfactant)
Examples of the nonionic surfactant include nonionic surfactants having a hydrocarbon group such as an alkyl group having 8 to 20 carbon atoms and excluding the compound (A).
Preferable examples of the nonionic surfactant include polyoxyethylene alkyl ether, polyoxyethylene fatty acid ester, polyoxyalkanediylalkylamine, polyoxyethylene sorbitan fatty acid ester and the like. Among these, polyoxyethylene alkyl ether having one alkyl group having 8 to 14 carbon atoms in the molecule and containing an average of 10 to 60 mol, preferably 12 to 30 mol of polyoxyethylene groups in the molecule. More preferred.

[Organic solvent (C)]
The organic solvent (C) means a water-soluble organic solvent having a dissolution amount in 100 g of water of 50 g or more at 25 ° C., and the dissolution amount is preferably 60 g or more, and the saturated vapor pressure (20 ° C.) is It is preferable that it is 0.001-1 kPa.
Specific examples of the water-soluble organic solvent are preferably monohydric alcohols having 1 to 8 carbon atoms, more preferably 2 to 6 carbon atoms such as methanol, ethanol, propanol, butanol and hexanol; ethylene glycol, propylene glycol, diethylene glycol , Dipropylene glycol, triethylene glycol, tripropylene glycol, tetraethylene glycol, 1,2-hexanediol, 1,6-hexanediol, 1,2,6-hexanetriol, glycerin, trimethylolpropane, etc., preferably carbon Examples thereof include polyhydric alcohols having 2 to 10, more preferably 2 to 6 carbon atoms.
Among these, from the viewpoint of dissolving or dispersing the compound (A), a monohydric alcohol having 2 to 5 carbon atoms is preferable, and a monohydric alcohol having 2 to 4 carbon atoms such as ethanol and isopropanol is more preferable. Ethanol is particularly preferred from the point of smell.

[Polyvalent metal salt (D)]
The polyvalent metal salt (D) is not particularly limited, and examples thereof include water-soluble salts such as Ca, Zn, Fe, Cu, Mn, Co, Ni, and Ba, and poorly water-soluble salts.
Examples of water-soluble salts include calcium chloride, magnesium chloride, aluminum chloride, potassium ming bang, ammonium ming bang, iron ming bang, aluminum sulfate, ferric sulfate, magnesium sulfate and the like. Calcium, ferric hydroxide, aluminum hydroxide, calcium carbonate, magnesium carbonate, calcium phosphate, magnesium stearate, aluminum stearate, calcium citrate, barium sulfate, barium hydroxide, aluminum allantoinate, aluminum acetate, bismuth nitrate And bismuth subgallate.
Among these, from the viewpoint of further enhancing the ability to promote water diffusion, a water-soluble salt that dissolves in water and gives a divalent or trivalent cation is preferable, and at least one selected from a calcium salt, a magnesium salt, and an aluminum salt is preferable. More preferred. Moreover, water-soluble chloride is preferable, 1 or more types chosen from calcium chloride, magnesium chloride, and aluminum chloride are more preferable, calcium chloride and magnesium chloride are still more preferable, and calcium chloride is especially preferable.

[Combination ratio of each component]
The water diffusion accelerator of the present invention is a composition containing a compound (A), a surfactant (B) and / or an organic solvent (C), and imparting water diffusion acceleration ability to cotton fabric.
The content of the compound (A) is preferably 0.1 to 40% by mass, more preferably 0.2 to 30% by mass, more preferably 0 in the water diffusion accelerator composition from the viewpoint of water diffusion promoting ability. .3 to 20% by mass, particularly preferably 0.5 to 15% by mass.
The content of the surfactant (B) and / or the organic solvent (C) has an effect of imparting water diffusion promoting ability to the cotton cloth, and the compound (A) is emulsified and dispersed in the water diffusion accelerator. Alternatively, any amount that can be solubilized may be used. Usually, surfactant (B) is 0.01-25 mass%, Preferably 0.02-20 mass is preferable. It is preferable to contain 0.1-70 mass% of organic solvents (C), and it is more preferable to contain 1-60 mass%.
The surfactant (B) enhances the action and effect of the compound (A), and the mass ratio of the compound (A) to the surfactant (B) from the viewpoint of uniformly treating the compound (A) on cotton fabric [compound (A) / surfactant (B)] is preferably 3 to 100, more preferably 4 to 90, more preferably 5 to 80, more preferably 6 to 70, more preferably 8 to 60, and further. Preferably it is 12-50.

In the water diffusion accelerator of this invention, it is preferable to contain water as a dispersion medium of a compound (A) and a dispersing agent (B), The pH of the composition in that case becomes like this. Preferably it is 2-8, More preferably It is 3-8, More preferably, it is 4-7.5.
When the polyvalent metal salt (D) is used in combination, the amount used is preferably 5 to 100 mol% with respect to the sulfonic acid group of the benzene monosulfonic acid derivative (A). In order to raise, it is preferable to use in the ratio of 8-100 mol%, It is still more preferable to use in the ratio of 20-95 mol%, It is especially preferable to use in the ratio of 40-90 mol%. Further, the upper limit of the amount used is preferably less than 100 mol% from the viewpoint of dispersibility in water. By using the polyvalent metal salt in the above range, the hydrophilic / hydrophobic balance of the benzene monosulfonic acid derivative (A) is appropriately adjusted, and a part of the fiber is easily hydrophobized. It is thought to improve.

In the following examples, “%” is “% by mass” unless otherwise specified. Moreover, the pressure at the time of preparation and evaluation of a water diffusion accelerator is all 101 kPa (atmospheric pressure).
As shown in Table 1, the benzene monosulfonic acid derivative (A) component and the component (A ′) [compound to be compared with the component (A)] used in Examples and Comparative Examples were prepared.

Moreover, the following were prepared as (B) component, (C) component, and (D) component.
(B) component: surfactant (b-1): sodium dodecyl sulfate (anionic surfactant)
(B-2): N-dodecanoylaminopropyl-N, N, N-trimethylammonium chloride (cationic surfactant)
(B-3): N-lauryl-N, N-dimethyl-N- (2-hydroxysulfopropyl) ammonium betaine (amphoteric surfactant)
(B-4): Nonionic surfactant having an average of 6 moles of ethylene oxide groups added to lauryl alcohol (b-5): Nonionic surfactant having an average of 20 moles of ethylene oxide groups added to lauryl alcohol (C) Component: Organic Solvent (c-1): Ethanol (D) Component:
(D-1): Calcium chloride (d-2): Magnesium chloride

Examples 1 to 24 and Comparative Examples 1 to 6 (Preparation of water diffusion accelerator)
Each component shown in Tables 2 to 4 was blended in a 250 mL capacity PYREX (registered trademark) medium bottle (available from ASONE Corporation) so that the mass of the final product was 200 g, and a powerful stirrer (cylinder type, One (diameter 8 mm × length 25 mm) was added and sealed.
The medium bottle was placed in a water bath adjusted to 50 ° C. and left for 20 minutes. Next, the amount of warm water in the water bath was adjusted to the liquid level of the composition contained in the medium bottle, and stirred for 30 minutes at 300 rpm using a magnetic stirrer. Then, it put in the water bath adjusted to 20 degreeC, and also stirred for 30 minutes, and obtained the water-diffusion promoter.
A cotton fabric test piece was prepared by the following method, and the obtained water diffusion accelerator was evaluated using the test piece. The results are shown in Tables 2-4.

<Preparation of test piece by processing cotton fabric>
Wash 2 kg of cotton knitted fabric (manufactured by Tanigami Shoten Co., Ltd., dyeing test material, cotton knit sill) using commercially available laundry detergent (Kao Corporation, Attack (Highly Active Bio-EX, 2008)) Washed with a machine (manufactured by Panasonic, fully automatic washing machine NA-F702P, detergent 34.3 g, water volume setting 47 L (water temperature 20 ° C.), washing 9 minutes, rinsing twice, dehydration 3 minutes). This washing operation was repeated 5 times, and then allowed to stand for 24 hours in an environment of 25 ° C. and 40% RH to be dried. A test piece obtained by cutting this cotton cloth into 5 cm × 5 cm (area (V)) is weighed (mass (W)), put into a glass petri dish having a diameter of 8 cm, and a predetermined amount of adhesion is obtained with respect to the test piece. Thus, the process liquid of Table 2 or Table 3 containing (A) component was provided. After leaving still for 5 minutes, it was flatly dried on a 200-mesh stainless steel wire net and allowed to stand for 24 hours in an environment of 25 ° C. and 40% RH and dried to prepare a cotton cloth test piece.

<Evaluation of water diffusion promoting ability>
Edible blue No. 1 aqueous solution (0.001% by mass, water uses ion-exchanged water) 0.1 mL was dropped on the center of a glass petri dish having a diameter of 8 cm using a Pipetteman P-1000 manufactured by Gilson (diameter 5 ± 1 mm). ). The cotton fabric test piece prepared as described above was placed so that the colored aqueous solution on the petri dish was in contact with the central portion of the test piece, and left for 24 hours. Using the test piece after standing, the water diffusion area of the colored portion was calculated from the following formula.
Diffusion area (cm ² ) = (V) × (W) / (Z)
(V): Total area of the test piece (25 cm ² )
(W): Mass of the entire test piece (g)
(Z): Mass (g) of the colored portion cut from the test piece
The relative value was calculated by setting the water diffusion area of the cotton fabric not treated with the compound (A) of the present invention to 100 (Comparative Example 3).
If the relative value of the diffusion area is 105 or more, the water diffusion promoting ability of the present invention can be realized.

  From Tables 2 to 4, it can be seen that according to the water diffusion accelerator and the cotton cloth treatment method of the examples, the water diffusion acceleration effect is superior to the composition of the comparative example and the cotton cloth treatment method.

Claims (5)

The benzene monosulfonic acid derivative (A) represented by the following general formula (1) is attached to a cotton cloth before wearing in direct contact with the skin in an amount of 0.1 to 50 mass% per mass of the cotton cloth, and the cotton A method for treating cotton cloth that imparts water diffusion promoting ability to the cloth.

(In the formula, R ¹ represents a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, or an alkanolamine, and R ^{2 to} R ⁶ each independently represents a hydrogen atom, a hydroxyl group, or a hydrocarbon having 1 to 4 carbon atoms. Group.) The water-diffusion promoter used for the processing method of the cotton fabric of Claim 1 containing the benzene monosulfonic acid derivative (A) represented by following General formula (1).

(In the formula, R ¹ represents a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, or an alkanolamine, and R ^{2 to} R ⁶ each independently represents a hydrogen atom, a hydroxyl group, or a hydrocarbon having 1 to 4 carbon atoms. Group.)   A benzene monosulfonic acid derivative (A), and a surfactant (B) capable of emulsifying, dispersing or solubilizing the compound (A) (excluding the compound (A)) and / or an organic solvent (C) The water diffusion promoter of Claim 2 which contains.   The water diffusion accelerator according to claim 3, wherein the mass ratio [compound (A) / surfactant (B)] of the benzene monosulfonic acid derivative (A) and the surfactant (B) is 1 to 100. .   The water-diffusion promoter in any one of Claims 2-4 which uses together polyvalent metal salt (D) in the ratio of 5-100 mol% with respect to the sulfonic acid group of a benzene monosulfonic acid derivative (A). .