WO2023085349A1

WO2023085349A1 - Antisoiling agent for fibers and antisoiling method for fibers

Info

Publication number: WO2023085349A1
Application number: PCT/JP2022/041866
Authority: WO
Inventors: 龍哉阿良田; 雄也北川; 早紀中平; 崇子五十嵐
Original assignee: 花王株式会社
Priority date: 2021-11-10
Filing date: 2022-11-10
Publication date: 2023-05-19

Abstract

The present invention is an antisoiling agent for fibers, comprising a compound given by formula (1). [In the formula, R1 and R2 are each a hydrocarbon group, and the total number of carbons in R1 plus R2 is 17 to 25. A1O and A2O are each an alkyleneoxy group in which A1 and A2 are a C2-C4 alkylene group. x1 and x2 are the average number of moles of addition and are each a number from 0 to 10, and M is a cation.]

Description

Antifouling agent for fibers, and antifouling method for fibers

The present invention relates to an antifouling agent for fibers and an antifouling method for fibers.

BACKGROUND ART Fibers are manufactured through various treatments in the manufacturing and processing stages. Various treatments are also applied to the manufactured fibers. Although there are various agents for treating fibers, for example, agents using ingredients such as surfactants and silicones are known.

Japanese Patent Application Laid-Open No. 2007-169508 describes an anionic surfactant having a sulfone group, a specific cationic surfactant component, a polyorganosiloxane component, and a predetermined carboxyl-modified silicone component under predetermined conditions. Disclosed are dry cleaning detergent compositions comprising:

In JP-A-2007-169509, an anionic surfactant having a sulfone group, an alkylene oxide adduct of an alkylamine, a polyorganosiloxane component, and a predetermined polyether-modified silicone component are mixed under predetermined conditions. Disclosed are dry cleaning detergent compositions comprising:

Japanese Patent Application Laid-Open No. 2015-58385 discloses that a predetermined Disclosed is a draining cleaning method for treating the object to be cleaned by the method of No. 2, and removing water adhering to the object to be cleaned or stains containing water.

Japanese Patent Application Laid-Open No. 4-281019 discloses an acrylic fiber bundle for carbon fiber production, in which amino silicon and dialkyl sulfosuccinate are imparted to fibers in a water-swollen state after spinning.

SUMMARY OF THE INVENTION Antifouling treatment for imparting an antifouling effect to fibers is known as one of the treatments for fibers. By imparting an antifouling effect to fibers, effects can be expected, for example, such that the fibers are less likely to be stained and the stains adhered to the fibers are easier to remove.

The present invention provides an antifouling agent for fibers that can impart an excellent antifouling effect to fibers with a simple treatment, and an antifouling method for fibers.

The present invention relates to an antifouling agent for fibers containing a compound represented by the following formula (1).

[In the formula, R ¹ and R ² are each a hydrocarbon group, and the total carbon number of R ¹ and R ² is 17 or more and 25 or less. A ¹ O and A ² O are alkyleneoxy groups in which A ¹ and A ² are alkylene groups having 2 or more and 4 or less carbon atoms, respectively. x1 and x2 are the average number of moles added, each being a number of 0 or more and 10 or less, and M is a cation. ]

The present invention also relates to an antifouling method for fibers, in which the compound represented by the formula (1) is brought into contact with the fibers.

According to the present invention, an antifouling agent for fibers that can impart an excellent antifouling effect to fibers with a simple treatment, and an antifouling method for fibers are provided.

MODES FOR CARRYING OUT THE INVENTION As a result of intensive studies, the inventors have found that contacting a specific compound with a fiber exhibits an excellent antifouling effect, leading to the completion of the present invention.
Although the mechanism by which the antifouling agent of the present invention can impart an excellent antifouling effect to the fiber is not clear, the antifouling agent of the present invention adsorbs to the fiber and forms a hydrophilic surface, so that the fiber has an excellent antifouling effect. It is presumed that an antifouling effect can be imparted.

<Anti-fouling agents for textiles>
The antifouling agent for fibers of the present invention (hereinafter also referred to as the antifouling agent of the present invention) contains the compound represented by the formula (1) [hereinafter referred to as component (a)]. The antifouling agent of the present invention may contain component (a) as an active ingredient. The antifouling agent of the present invention may contain component (a) as an active ingredient for imparting an antifouling effect to fibers.

In formula (1), R ¹ and R ² may be the same or different and each represents a hydrocarbon group. Hydrocarbon groups include alkyl groups and alkenyl groups.

In formula (1), the number of carbon atoms in the hydrocarbon groups of R ¹ and R ² is preferably 6 or more, more preferably 8, from the viewpoint of the antifouling effect (hereinafter simply referred to as the antifouling effect) that can be imparted to the fiber. above, more preferably 9 or more, still more preferably 10 or more, and from the viewpoint of dispersibility in water, preferably 24 or less, more preferably 20 or less, even more preferably 17 or less, still more preferably 12 or less is selected from In formula (1), the number of carbon atoms in the hydrocarbon groups of R ¹ and R ² is preferably 6 or more, respectively, from the viewpoint of the antifouling effect that can be imparted to the fiber (hereinafter simply referred to as the antifouling effect). More preferably 8 or more, still more preferably 9 or more, still more preferably 10 or more, and from the viewpoint of dispersibility in water, preferably 17 or less, still more preferably 12 or less.

In formula (1), the total carbon number of R ¹ and R ² is 17 or more, preferably 18 or more, more preferably 20 or more, from the viewpoint of antifouling effect, and 25 or less from the same viewpoint. Yes, preferably 24 or less. Here, when the antifouling agent of the present invention contains, as the component (a), two or more compounds having different total carbon numbers of R ¹ and R ² , the sum of R ¹ and R ² in the antifouling agent The carbon number represents the molar average of the total carbon number of R ¹ and R ² in each compound.

In formula (1), the hydrocarbon groups of R ¹ and R ² may each be straight chain or branched chain, but preferably contain a branched chain from the viewpoint of dispersibility in water. At least one of R ¹ and R ² is preferably a branched alkyl group. When the hydrocarbon group of R ¹ and R ² is a branched chain, it preferably has a side chain with 2 or more carbon atoms, and more preferably has a side chain with 3 or more carbon atoms, from the viewpoint of antifouling effect. . The total number of carbon atoms in the side chains may be 10 or less, further 8 or less, or even 6 or less. In addition, among the hydrocarbon groups of R ¹ and R ² , the longest carbon arrangement with the carbon bonded to the oxygen atom (O) in the formula as the first carbon is called the main chain, and the number of carbon atoms in the main chain is X (when the number of carbon atoms of R ¹ and R ² is 2n-1 or 2n (n is an integer of 2 or more) X is n or more), the first to X-1th of the main chain Each hydrocarbon group attached to any carbon of is called a side chain.
In formula (1), the hydrocarbon groups of R ¹ and R ² may be either saturated or unsaturated. preferable.
Therefore, in formula (1), at least one of R ¹ and R ² is preferably a hydrocarbon group having a branched structure or an unsaturated bond.
In formula (1), the hydrocarbon groups of R ¹ and R ² more preferably include a saturated branched-chain hydrocarbon group or an unsaturated straight-chain hydrocarbon group, respectively, from the viewpoint of the antifouling effect.
Further, when the hydrocarbon groups of R ¹ and R ² are respectively branched hydrocarbon groups, they may be groups derived from Guerbet alcohol from the viewpoint of antifouling effect and availability.
Further, when the hydrocarbon groups of R ¹ and R ² are each a branched hydrocarbon group having 10 carbon atoms, isodecanol (for example, decyl alcohol manufactured by KH Neochem Co., Ltd.) is decanol from the viewpoint of antifouling effect and availability. ) and other branched chain alcohol-derived groups having 10 carbon atoms.

Component (a) is preferably a compound in which R ¹ and R ² in formula (1) are each a branched alkyl group having 10 or more and 12 or less carbon atoms, more preferably a branched alkyl group having 10 carbon atoms.
In the present invention, a hydrocarbon residue obtained by removing a hydroxyl group from a secondary alcohol is included in chain-branched hydrocarbon groups such as branched-chain alkyl groups.
When each of R ¹ and R ² is a branched alkyl group having 10 to 12 carbon atoms, the total number of carbon atoms constituting the side chains may be the same or different. It is preferably 1 or more, more preferably 2 or more, and preferably 4 or less, more preferably 3 or less, still more preferably 3.
In the present invention, the total number of carbon atoms constituting a side chain is the total number of carbon atoms in all side chains other than the main chain in one branched alkyl group. It is the total number of carbon atoms in all side chains.
The number of side chains of R ¹ and R ² may be the same or different, and is preferably 1 or more, preferably 3 or less, more preferably 2 or less from the viewpoint of antifouling effect. From the viewpoint of the antifouling effect, the number of side chains of R ¹ and R ² is preferably 1 each.
In the present invention, the number of side chains is the number of side chains branched from the main chain, and the number of side chains does not change even if the side chain further has a side chain branched from the side chain. . However, although the side chain may further have a side chain branched from the side chain, the side chain is preferably a straight chain from the viewpoint of the antifouling effect.
When R ¹ and R ² are each independently a branched-chain alkyl group having 10 or more and 12 or less carbon atoms, the number of branched carbon atoms in R ¹ and R ² may be the same or different. From the viewpoint of the staining effect, it is 1 or more, preferably 3 or less, and even more preferably 2 or less. From the viewpoint of the antifouling effect, the number of branched carbon atoms in R ¹ and R ² is preferably 1 each. In the present invention, the number of branched carbon atoms is the total number of tertiary carbon atoms and quaternary carbon atoms in the branched chain alkyl group.
A more preferred embodiment of R ¹ and R ² is each a branched alkyl group having 10 or more and 12 or less carbon atoms from the viewpoint of antifouling effect, and the number of carbon atoms in the main chain is each independently 7 or 8. and the number of carbon atoms constituting the side chain is preferably 1 or more and 4 or less, more preferably 2 or more and 4 or less, still more preferably 2 or more and 3 or less, and still more 3, and the number of side chains is each , preferably 3 or less, more preferably 2 or less, and still more preferably 1.
From the viewpoint of antifouling effect, R ¹ and R ² are each preferably a branched alkyl group selected from a branched decyl group and a branched dodecyl group, and more preferably a branched decyl group. Examples of the branched decyl group include a 2-propylheptyl group, a group derived from decyl alcohol manufactured by KH Neochem Co., Ltd., and a 2-propylheptyl group is preferred. A branched dodecyl group includes a 2-butyloctyl group and the like. At least one of R ¹ and R ² may be a branched chain alkyl group selected from 2-propylheptyl and 2-butyloctyl groups.

In formula (1), the hydrocarbon group for R ¹ and the hydrocarbon group for R ² may be the same or different. When the hydrocarbon group for R ¹ and the hydrocarbon group for R ² are different, it is preferable from the viewpoint of dispersibility in water. Further, when the hydrocarbon group of R ¹ and the hydrocarbon group of R ² are the same, it is preferable from the viewpoint of the antifouling effect. For example, in formula (1), the number of carbon atoms in R ¹ and the number of carbon atoms in R ² may be the same or different. When the number of carbon atoms in R ¹ and the number of carbon atoms in R ² are different, it is preferable from the viewpoint of dispersibility in water. Moreover, when the number of carbon atoms in R ¹ and the number of carbon atoms in R ² are the same, it is preferable from the viewpoint of the antifouling effect.

In formula (1), when the hydrocarbon groups of R ¹ and R ² contain a branched chain, the degree of branching defined by the following formula is preferably 0.3 or less, more preferably 0.3 or less, more preferably 0.2 or less, more preferably 0.1 or less, still more preferably 0.08 or less, and from the viewpoint of the antifouling effect, preferably 0.01 or more, more preferably 0.02 or more, and still more preferably is greater than or equal to 0.04.
Degree of branching = [(total number of terminal methyl groups of R ¹ and R ² ) - 2]/(total number of carbon atoms of R ¹ and R ² )
The degree of branching is an average value that can be measured using ¹ H-NMR.

Component (a) is a compound represented by the above formula (1) in which R ¹ and R ² are hydrocarbon groups with the same structure, and compounds in which R ¹ and R ² are hydrocarbon groups with different structures. It may be one or more compounds selected from
From the viewpoint of the antifouling effect, the component (a) is preferably a compound in which R ¹ and R ² are hydrocarbon groups having the same structure.
From the viewpoint of dispersibility in water, component (a) is preferably a compound in which R ¹ and R ² are hydrocarbon groups with different structures.
For example, the antifouling agent of the present invention includes, as the component (a), a compound represented by the above formula (1) in which R ¹ and R ² are hydrocarbon groups having the same structure, and R ¹ and R ² having different structures can contain a compound represented by the above formula (1), which is a hydrocarbon group of

In formula (1), A ¹ O and A ² O each have 2 or more and 4 or less carbon atoms in which A ¹ and A ² are alkylene groups, and preferably have 2 or 3 carbon atoms from the viewpoint of the antifouling effect. It is an alkyleneoxy group. In formula (1), x1 and x2 represent the average number of added moles of A ¹ O and A ² O, respectively, and are respectively 0 or more and 10 or less, preferably 6 or less, more preferably 6 or less, from the viewpoint of the antifouling effect. It is a number of 4 or less, more preferably 2 or less, with 0 being more preferred. At least one of x1 and x2 in formula (1) may be 0, and both may be 0.

In formula (1), M is a cation. M is preferably a cation other than a hydrogen ion. Examples of M include alkali metal ions such as lithium ion, sodium ion and potassium ion, alkaline earth metal ions such as calcium ion and barium ion, triethanolammonium ion, diethanolammonium ion, monoethanolammonium ion, and trimethylammonium ion. , and organic ammonium ions such as monomethylammonium ion.
From the viewpoint of dispersibility in water, M is preferably an alkali metal ion or an alkanolammonium ion, more preferably a sodium ion, a potassium ion, a triethanolammonium ion, a diethanolammonium ion or a monoethanolammonium ion, and still more preferably a sodium ion. .

The component (a) of the present invention is preferably a compound represented by the following formula (1-1). That is, the present invention provides an antifouling agent for fibers containing, as component (a), a compound represented by the following formula (1-1). The compound of formula (1-1) is a compound in which x1 and x2 in formula (1) are each 0

[In the formula, R ¹ and R ² are each a hydrocarbon group, the total carbon number of R ¹ and R ² is 17 or more and 25 or less, and M is a cation. ]
Specific examples and preferred examples of R ¹ , R ² and M in formula (1-1) are the same as in formula (1).

Component (a) can be synthesized by a known method. For example, it can be obtained by reacting a maleic acid diester obtained by reacting maleic anhydride with an alcohol and a hydrogen sulfite. At that time, by using alcohols having different carbon numbers and structures, it is possible to obtain a compound in which R ¹ and R ² in formula (1) are hydrocarbon groups with different structures. Component (a) can be synthesized, for example, by the method described in US Patent Application Publication No. 2007/0214999, Examples 2-3.

Suitable alcohols for use in the production of component (a) include:
(1) primary alcohols typified by 2-propylheptan-1-ol, 2-butyloctan-1-ol, branched-chain decyl alcohol (eg, decyl alcohol manufactured by KH Neochem Co., Ltd.);
(2) secondary alcohols such as 5-nonanol and 2,6-dimethyl-4-heptanol;

Component (a) is preferably at least one selected from di(2-propylheptyl)sulfosuccinic acid, di(2-butyloctyl)sulfosuccinic acid, and salts thereof, from the viewpoint of dispersibility in water and antifouling effect. Seeds, more preferably at least one selected from di(2-propylheptyl)sulfosuccinate and di(2-butyloctyl)sulfosuccinate, still more preferably di(2-propylheptyl)sulfosuccinate. The salts are preferably alkali metal salts and alkanolamine salts, more preferably sodium salts, potassium salts, triethanolamine salts, diethanolamine salts and monoethanolamine salts, and still more preferably sodium salts.

In the present invention, by using the component (a), it is possible to provide an antifouling agent that can be imparted to fibers and has an excellent antifouling effect.

The object (object to be treated) to be treated with the antifouling agent of the present invention is a fiber. The fibers may be either hydrophobic fibers or hydrophilic fibers. Examples of hydrophobic fibers include protein fibers (milk protein casein fiber, Promix, etc.), polyamide fibers (nylon, etc.), polyester fibers (polyester, etc.), polyacrylonitrile fibers (acrylic, etc.), polyvinyl alcohol fibers, etc. Fibers (vinylon, etc.), polyvinyl chloride fibers (polyvinyl chloride, etc.), polyvinylidene chloride fibers (vinylidene, etc.), polyolefin fibers (polyethylene, polypropylene, etc.), polyurethane fibers (polyurethane, etc.), polyvinyl chloride/ Polyvinyl alcohol copolymer fibers (polyclaral, etc.), polyalkylene paraoxybenzoate fibers (benzoate, etc.), polyfluoroethylene fibers (polytetrafluoroethylene, etc.), and the like are exemplified. Hydrophilic fibers include, for example, seed hair fibers (cotton, kapok, etc.), bast fibers (hemp, flax, ramie, hemp, jute, etc.), leaf vein fibers (manila hemp, sisal hemp, etc.), palm fibers, rush, Straw, animal hair fibers (wool, mohair, cashmere, camel hair, alpaca, vicuna, angora, etc.), silk fibers (domestic silk, wild silk), feathers, cellulose fibers (rayon, polynosic, cupra, acetate, etc.), etc. exemplified.

From the viewpoint of antifouling effect, the fiber is preferably one or more selected from polyolefin fibers (polyethylene, polypropylene, etc.), polyurethane fibers (polyurethane, etc.), polyester fibers (polyester, etc.), and cotton fibers.
Moreover, the fiber is preferably polyolefin-based fiber (polyethylene, polypropylene, etc.), more preferably polypropylene, from the viewpoint of antifouling property against lipid stains.
From the standpoint of antifouling properties against carbon black stains, the fiber is preferably one or more selected from polyester fibers (such as polyester) and cotton fibers, more preferably cotton fibers.
Moreover, the fiber is preferably one or more selected from polyester-based fibers (such as polyester) and cotton fibers from the viewpoint of recontamination prevention against mud particle stains.

The content of polyolefin fibers (polyethylene, polypropylene, etc.) in the fibers is preferably 70% by mass or more, more preferably 80% by mass or more, and still more preferably 100% by mass, from the viewpoint of the antifouling effect.

The content of polyurethane fibers (such as polyurethane) in the fibers is preferably 5% by mass or more, more preferably 10% by mass or more, and preferably 20% by mass or less, more preferably 15% by mass, from the viewpoint of antifouling effect. % by mass or less.

The content of polyester fiber (such as polyester) in the fiber is preferably 65% by mass or more, more preferably 80% by mass or more, and preferably 100% by mass or less, more preferably 90% by mass, from the viewpoint of antifouling effect. % by mass or less.

From the viewpoint of the antifouling effect, the content of cotton fibers in the fibers is preferably 5% by mass or more, more preferably 10% by mass or more, still more preferably 15% by mass or more, still more preferably 20% by mass or more, and more preferably 20% by mass or more. More preferably, it is 100% by mass.

The fibers are preferably textile products, and examples of textile products include textile products using the above-mentioned hydrophobic fibers and hydrophilic fibers. Examples of textile products include textile products using fibers selected from hydrophobic fibers and hydrophilic fibers, and textile products selected from fabrics (woven fabrics), knitted fabrics, and non-woven fabrics. ), the knitted fabric and the nonwoven fabric, and the textile product obtained using the textile product selected from Textile products such as handkerchiefs and towels can be mentioned. From the viewpoint of the antifouling effect after treatment with the antifouling agent of the present invention, preferred textile products are textile products selected from fabrics (woven fabrics), knitted fabrics, and nonwoven fabrics, and textile products containing these. From the point of view, preferred textile products are textile products containing one or more selected from polyolefin fibers (polyethylene, polypropylene, etc.), polyurethane fibers (polyurethane, etc.), polyester fibers (polyester, etc.), and cotton fibers. Fabrics (woven fabrics), knitted fabrics, preferably made of one or more fibers selected from polyolefin fibers (polyethylene, polypropylene, etc.), polyurethane fibers (polyurethane, etc.), polyester fibers (polyester, etc.), and cotton fibers, and nonwoven fabrics. Preferred aspects of the content of polyolefin fibers (polyethylene, polypropylene, etc.), polyurethane fibers (polyurethane, etc.), polyester fibers (polyester, etc.), and cotton fibers in textile products are the polyolefin fibers ( polyethylene, polypropylene, etc.), polyurethane fibers (polyurethane, etc.), polyester fibers (polyester, etc.), and cotton fibers.

The antifouling agent of the present invention may be used for treatment objects other than hard articles, and treatment objects other than hard articles having a hydrophobic surface. That is, the antifouling agent of the present invention may exclude those used for hard articles, as well as hard articles having a hydrophobic surface.

The dirt targeted by the antifouling agent of the present invention is, for example, one or more types of dirt selected from (I) lipids, (II) carbon black, (III) mud particles, (IV) microorganisms, and (V) viruses. is. The soil may be soil containing a plurality of (I)-(V).

Examples of lipids include oleic acid, squalene, liquid paraffin, and triglycerides (eg, triolein). From the viewpoint of the antifouling effect after treatment with the antifouling agent of the present invention, triglycerides and triolein are preferred.

From the viewpoint of the antifouling effect, the antifouling agent of the present invention contains component (a) preferably at 0.01% o.o. w. f. above, more preferably 0.05% o.o. w. f. above, more preferably 0.1% o.o. w. f. Above, more preferably 0.2% o.o. w. f. Above, more preferably 0.3% o.o. w. f. From the above and the same point of view, preferably 3% o.o. w. f. below, more preferably 2% o.o. w. f. below, more preferably 1% o.o. w. f. Below, more preferably 0.7% o.o. w. f. Below, more preferably 0.5% o.o. w. f. Contact with the fiber in the following amounts: Here, "% o.w.f." is an abbreviation for "% on the weight of fabric" and means the mass percentage of component (a) with respect to the mass of fiber. The antifouling agent of the present invention may be used as a treatment liquid containing component (a) in the above amount (% o.w.f.). That is, the antifouling agent of the present invention is an antifouling agent for fibers containing the component (a), wherein the component (a) is added in an amount of 0.01% o.o. w. f. above, preferably 0.05% o.d. w. f. above, more preferably 0.1% o.o. w. f. above, more preferably 0.2% o.o. w. f. Above, more preferably 0.3% o.o. w. f. above and 3% o.d. w. f. below, preferably 2% o.o. w. f. below, more preferably 1% o.o. w. f. below, more preferably 0.7% o.o. w. f. Below, more preferably 0.5% o.o. w. f. Included are textile antifouling agents used as treatment liquids containing in the following amounts:

The antifouling agent of the present invention may contain optional components other than the component (a) within a range that does not impair the effects of the present invention. Optional ingredients include surfactants, solvents, hydrotropes, dispersants, pH adjusters, thickeners, viscosity adjusters, perfumes, colorants, antioxidants, preservatives, antifoaming agents, bleaching agents, and bleaching agents. A component such as an activator (however, one that does not correspond to component (a)) can be blended.

The antifouling agent of the present invention can be produced, for example, by mixing a predetermined amount of component (a) and water. At that time, the antifouling agent of the present invention can be obtained by diluting the precursor composition containing the component (a) with water. For example, such dilution may be carried out to prepare the antifoulant of the invention immediately prior to its use. As the precursor composition, for example, component (a) is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, still more preferably 0.1% by mass or more, and preferably 10% by mass. Below, more preferably, a composition containing 5% by mass or less and further containing water is mentioned.

From the viewpoint of irritation to hand skin, the antifouling agent of the present invention has a pH at 25°C of preferably 2 or more, more preferably 4 or more, still more preferably 5 or more, and preferably 10 or less. It is preferably 9 or less, more preferably 8 or less. In addition, pH can be measured by a glass electrode method.

The antifouling agent of the present invention has, for example, a viscosity at 25° C. of preferably 3 mPa·s or more, more preferably 10 mPa·s or more, and preferably 5,000 mPa·s or less, more preferably 2,500 mPa·s. s or less. The viscosity can be adjusted with commonly used thickeners, solvents, hydrotropic agents, and the like.

The antifouling agent of the present invention is prepared by diluting the antifouling agent with water 10 times or more and less than 10,000 times, preferably 50 times or more and less than 5,000 times to prepare an antifouling agent composition (treatment liquid). , is preferably used in a method for treating an object to be treated.

The present invention discloses the use of the compound represented by formula (1) [(a) component] as an antifouling agent for fibers. The present invention also discloses the use of the component (a) as an active ingredient in an antifouling agent for fibers. The present invention also discloses the use of the composition containing component (a) as an antifouling agent for textiles. Specific examples and preferable examples of the component (a) in these uses are the same as those of the antifouling agent of the present invention. In addition, the items described for the antifouling agent of the present invention can be appropriately applied to these uses. For example, in these uses, component (a) may be a compound represented by general formula (1-1) above. In these uses, the component (a) may be one or more selected from di(2-propylheptyl)sulfosuccinate and di(2-butyloctyl)sulfosuccinate.

<Anti-fouling method for fibers>
The present invention provides an antifouling method for fibers (hereinafter also referred to as an antifouling method of the present invention) in which the component (a) is brought into contact with the fibers.
The items described for the antifouling agent of the present invention can be appropriately applied to the antifouling method of the present invention. In the antifouling method of the present invention, specific examples and preferred embodiments of the component (a), fibers to be treated for antifouling treatment, stains to be treated for antifouling, etc. are the same as those of the antifouling agent of the present invention.

In the antifouling method of the present invention, it is preferable to use a treatment liquid containing the component (a) and water (hereinafter also referred to as the treatment liquid of the present invention).
The treatment liquid of the present invention can be obtained by mixing the antifouling agent of the present invention with water. Moreover, the treatment liquid of the present invention can be obtained by diluting the precursor composition containing the component (a) described above with water. Further, the treatment liquid of the present invention may use the antifouling agent of the present invention as it is.

The treatment liquid of the present invention has a pH of preferably 2 or more, more preferably 4 or more, still more preferably 5 or more, and preferably 10 or less, more preferably 9 or less, from the viewpoint of irritation to hand skin. More preferably, it is 8 or less. This pH is the pH at the processing temperature.

The hardness of the treatment liquid of the present invention is preferably 1° DH or more, more preferably 3° DH or more, still more preferably 4° DH or more, and more preferably 20° DH or less, more preferably It is 12° DH or less, more preferably 8° DH or less.

From the viewpoint of the antifouling effect, the treatment liquid of the present invention preferably contains component (a) at 0.01% o.o. w. f. above, more preferably 0.05% o.o. w. f. above, more preferably 0.1% o.o. w. f. Above, more preferably 0.2% o.o. w. f. Above, more preferably 0.3% o.o. w. f. From the above and the same point of view, preferably 3% o.o. w. f. below, more preferably 2% o.o. w. f. below, more preferably 1% o.o. w. f. Below, more preferably 0.7% o.o. w. f. Below, more preferably 0.5% o.o. w. f. Contains the following amounts. That is, in the present invention, the treatment liquid containing component (a) in this amount is preferably brought into contact with the fibers.

In the antifouling method of the present invention, the treatment temperature is preferably 15° C. or higher, more preferably 20° C. or higher from the viewpoint of antifouling effect, and preferably 60° C. from the viewpoint of antifouling effect and productivity. 30° C. or less, more preferably 30° C. or less. This processing temperature may be the temperature of the processing liquid of the present invention.

The contact amount of the component (a) and the treatment temperature are preferable conditions, for example, when the fiber is subjected to antifouling treatment in a domestic washing machine.

The antifouling method of the present invention can be carried out in the coexistence of a surfactant [except for component (a)]. For example, the antifouling method of the present invention can be carried out in the presence of a surfactant [except for component (a)] to prevent redeposition of stains (hereinafter also referred to as anti-redeposition effect). It's also a method.

From the viewpoint of anti-redeposition effect, the surfactant is preferably at least one selected from anionic surfactants [excluding component (a)], nonionic surfactants, and cationic surfactants. More preferably, it is at least one selected from anionic surfactants (excluding component (a)) and nonionic surfactants.

Examples of anionic surfactants [excluding component (a)] include alkyl sulfates, polyoxyalkylene alkyl ether sulfates, alkanesulfonates, alkylbenzenesulfonates, higher fatty acids or salts thereof, poly Oxyethylene alkyl ether carboxylic acid or its salt, N-acylamino acid or its salt, alkyl phosphate ester salt, polyoxyethylene alkyl ether phosphate and the like can be mentioned. The alkyl group of the anionic surfactant has, for example, 8 or more and 20 or less carbon atoms. The average number of added moles of oxyalkylene groups, such as oxyethylene groups, in the anionic surfactant is, for example, 0 or more and 4 or less, preferably more than 0 and 4 or less. Salts of anionic surfactants are, for example, alkali metal salts such as sodium salts and potassium salts.

Examples of nonionic surfactants include alkyl monoglyceryl ethers, polyoxyalkylene monoalkyl or alkenyl ethers, alkyl (poly)glycosides (glycoside nonionic surfactants), sorbitan nonionic surfactants, and aliphatic alkanols. Examples include amides, fatty acid monoglycerides, sucrose fatty acid esters, amides of alkanolamines such as monoethanolamine, diethanolamine and methylmonoethanolamine and fatty acids such as lauric acid and myristic acid. The alkyl group or alkenyl group of the nonionic surfactant has, for example, 6 or more and 18 or less carbon atoms. The average number of added moles of oxyalkylene groups, such as oxyethylene groups, in the nonionic surfactant is, for example, 3 or more and 25 or less.

Preferred surfactants include sodium salt of internal olefin sulfonic acid having 18 carbon atoms, sodium dodecylbenzenesulfonate, poly Sodium oxyethylene/polyoxypropylene lauryl ether sulfate (e.g., ethylene oxide average addition mole number 1.5, propylene oxide average addition mole number 0.4, polyoxyethylene group in lauryl group, polyoxypropylene group block in this order compound), and nonionics such as polyoxyethylene lauryl ether (e.g. ethylene oxide average added moles 8), polyoxyethylene lauryl ether (e.g. ethylene oxide average added moles 21) It is one or more surfactants selected from surfactants.

The antifouling method of the present invention can be carried out by adding component (a) to a fiber treatment medium in which surfactants (excluding component (a)), water and staining components coexist. The antifouling method of the present invention comprises adding the component (a) to a fiber treatment medium in which a surfactant [except for the component (a)], water and staining components coexist, and bringing the fiber into contact with the antifouling of the fiber. including methods. The fouling component may be one or more fouling components selected from (I) lipids, (II) carbon black, (III) dirt particles, (IV) microorganisms, and (V) viruses.
The hardness and temperature of the fiber treatment medium may be the same as the treatment liquid of the invention described above. The fiber treatment medium to which component (a) has been added may be the treatment liquid of the present invention.

The method of contacting the antifouling agent of the present invention and the treatment liquid of the present invention with the fiber to be treated is not particularly limited, but can be carried out by coating, immersion, spraying, or the like. While the object to be treated is immersed in the treatment liquid containing the antifouling agent of the present invention, mechanical force such as stirring, shaking, water flow, etc., or using tools commonly used for cleaning such as brushes and sponges, etc. Mechanical force may be applied.

In addition to the above-described embodiments, aspects of the present invention are exemplified below. To these embodiments, the items described in the antifouling agent for fibers and the antifouling method for fibers of the present invention can be applied with modifications as necessary. Also, the description of each aspect can be modified as necessary and applied to other aspects.

<1>
An antifouling agent for fibers containing a compound represented by the following formula (1) [hereinafter referred to as component (a)].

<2>
An antifouling agent for fibers containing a compound represented by the following formula (1) (hereinafter referred to as component (a)) as an active ingredient.

<3>
An antifouling agent for textiles containing a compound represented by the following formula (1) (hereinafter referred to as component (a)) as an active ingredient for imparting an antifouling effect to textiles.

<4>
In formula (1), A ¹ O and A ² O are each an alkyleneoxy group having 2 or 3 carbon atoms, wherein A ¹ and A ² are alkylene groups, any one of <1> to <3> The antifouling agent for textiles described in .

<5>
In formula (1), x1 and x2 are each preferably a number of 6 or less, more preferably 4 or less, and still more preferably 2 or less. Antifouling agent.

<6>
The antifouling agent for fibers according to any one of <1> to <5>, wherein at least one of x1 and x2 in the formula (1) is 0.
<7>
The antifouling agent for fibers according to any one of <1> to <6>, wherein the component (a) is a compound represented by the following formula (1-1).

[In the formula, R ¹ and R ² are each a hydrocarbon group, and the total carbon number of R ¹ and R ² is 17 or more and 25 or less. M is a cation. ]

<8>
In formula (1) or formula (1-1), the number of carbon atoms in the hydrocarbon groups of R ¹ and R ² is preferably 6 or more, more preferably 8 or more, still more preferably 9 or more, and even more preferably 10. above, and preferably 24 or less, more preferably 20 or less, still more preferably 17 or less, and even more preferably 12 or less, and the number of carbon atoms of the hydrocarbon groups of R ¹ and R ² is, respectively, Preferably 6 or more, more preferably 8 or more, still more preferably 9 or more, still more preferably 10 or more, and preferably 17 or less, still more preferably 12 or less, any of <1> to <7> The antifouling agent for textiles described in

<9>
In formula (1) or formula (1-1), the total carbon number of R ¹ and R ² is preferably 18 or more, more preferably 20 or more, and 25 or less, preferably 24 or less, <1 > to the antifouling agent for fibers described in any one of <8>.

<10>
In formula (1) or formula (1-1), the hydrocarbon groups of R ¹ and R ² are each linear or branched, or any of <1> to <9>. The antifouling agent for textiles described in

<11>
In formula (1) or formula (1-1), each of the hydrocarbon groups of R ¹ and R ² is a branched chain and has a side chain with 2 or more carbon atoms, and further, 3 or more carbon atoms <1>- The antifouling agent for fibers according to any one of <10>.

<12>
In formula (1) or formula (1-1), each of the hydrocarbon groups of R ¹ and R ² is a branched chain, and the total number of carbon atoms in the side chains is 10 or less, further 8 or less, further 6 or less. The antifouling agent for fibers according to any one of <1> to <11>.

<13>
In formula (1) or formula (1-1), the hydrocarbon groups of R ¹ and R ² are each saturated or unsaturated, further linear and unsaturated, <1> to <12 The antifouling agent for fibers according to any one of >.

<14>
Any one of <1> to <13>, wherein in formula (1) or (1-1), at least one of R ¹ and R ² is a hydrocarbon group having a branched structure or an unsaturated bond. Antifouling agent for treated textiles.

<15>
The antifouling agent for fibers according to any one of <1> to <14>, wherein at least one of R ¹ and R ² in formula (1) or (1-1) is a branched alkyl group.

<16>
In formula (1) or formula (1-1), the hydrocarbon groups of R ¹ and R ² are each a saturated branched-chain hydrocarbon group or an unsaturated straight-chain hydrocarbon group <1> to The antifouling agent for fibers according to any one of <15>.

<17>
In formula (1) or formula (1-1), the hydrocarbon groups of R ¹ and R ² are each a branched hydrocarbon group, and further a group derived from Guerbet alcohol, <1> to <16>, the antifouling agent for fibers described in any one of

<18>
In formula (1) or (1-1), the hydrocarbon groups of R ¹ and R ² are each a branched chain hydrocarbon group having 10 carbon atoms, and a branched chain alcohol having 10 carbon atoms. The antifouling agent for fibers according to any one of <1> to <17>, which is the derived group.

<19>
In formula (1) or formula (1-1), R ¹ and R ² are each a branched-chain alkyl group having 10 or more and 12 or less carbon atoms, or a branched-chain alkyl group having 10 carbon atoms, <1> The antifouling agent for fibers according to any one of <18>.

<20>
In formula (1) or formula (1-1), each of R ¹ and R ² is a branched alkyl group having 10 or more and 12 or less carbon atoms, and the total number of carbon atoms of the groups constituting the side chains is Each is preferably 1 or more, more preferably 2 or more, and preferably 4 or less, more preferably 3 or less, and still more preferably 3. The fiber resistance according to any one of <1> to <19> fouling agent.

<21>
In formula (1) or (1-1), each of R ¹ and R ² is a branched chain, and the number of side chains is 1 or more, preferably 3 or less, and more preferably 2. The antifouling agent for fibers according to any one of <1> to <20> below.

<22>
any one of <1> to <21> in formula (1) or formula (1-1), wherein each of R ¹ and R ² is a branched chain and the number of side chains is 1; The antifouling agent for textiles described in .

<23>
any one of <1> to <22> in formula (1) or formula (1-1), wherein each of R ¹ and R ² is a branched chain, and each of the side chains is a straight chain; Antifouling agent for the described textiles.

<24>
In formula (1) or formula (1-1), each of R ¹ and R ² is a branched alkyl group having 10 to 12 carbon atoms, and the number of branched carbon atoms in R ¹ and R ² is , 1 or more, preferably 3 or less, and more preferably 2 or less, according to any one of <1> to <23>.

<25>
In formula (1) or formula (1-1), each of R ¹ and R ² is a branched chain, and the number of branched carbon atoms in each of R ¹ and R ² is 1, <1> to The antifouling agent for fibers according to any one of <24>.

<26>
In formula (1) or (1-1), each of R ¹ and R ² is a branched alkyl group having 10 or more and 12 or less carbon atoms, and the number of carbon atoms in the main chain is independently 7 or 8, and the number of carbon atoms in the groups constituting the side chain is preferably 1 or more and 4 or less, more preferably 2 or more and 4 or less, still more preferably 2 or more and 3 or less, and still more 3, and the side chain The antifouling agent for fibers according to any one of <1> to <25>, which is a branched alkyl group in which the number of each is preferably 3 or less, more preferably 2 or less, and still more preferably 1.

<27>
In formula (1) or (1-1), each of R ¹ and R ² is a branched-chain alkyl group selected from a branched-chain decyl group and a branched-chain dodecyl group, and further a branched-chain decyl group; The antifouling agent for fibers according to any one of <1> to <26>.

<28>
The branched decyl group is a group selected from a 2-propylheptyl group and a group derived from a branched decyl alcohol (eg, decyl alcohol manufactured by KH Neochem Co., Ltd.), a 2-propylheptyl group, and a branched dodecyl The antifouling agent for fibers according to <27>, wherein the group is a 2-butyloctyl group.

<29>
The antifouling agent for fibers according to any one of <1> to <28>, wherein the hydrocarbon group of R ¹ and the hydrocarbon group of R ² are different in formula (1) or (1-1).

<30>
The antifouling agent for fibers according to any one of <1> to <29>, wherein in formula (1) or (1-1), the number of carbon atoms in R ¹ and the number of carbon atoms in R ² are different.

<31>
The antifouling fiber according to any one of <1> to <28>, wherein the hydrocarbon group of R ¹ and the hydrocarbon group of R ² are the same in formula (1) or (1-1). agent.

<32>
The antifouling agent for fibers according to <31>, wherein in formula (1) or (1-1), the carbon number of R ¹ and the carbon number of R ² are the same.

<33>
<1> to <32, wherein at least one of R ¹ and R ² in formula (1) or formula (1-1) is a branched alkyl group selected from a 2-propylheptyl group and a 2-butyloctyl group; The antifouling agent for fibers according to any one of >.

<34>
The compound represented by formula (1) or formula (1-1) is one or more selected from di(2-propylheptyl)sulfosuccinate and di(2-butyloctyl)sulfosuccinate, <1> to <28>, the antifouling agent for fibers.

<35>
In formula (1) or formula (1-1), M is a cation other than a hydrogen ion, and is one or more selected from alkali metal ions, alkaline earth metal ions, and organic ammonium ions. Further, at least one selected from lithium ion, sodium ion, potassium ion, calcium ion, barium ion, triethanolammonium ion, diethanolammonium ion, monoethanolammonium ion, trimethylammonium ion, and monomethylammonium ion <1> The antifouling agent for fibers according to any one of <34>.

<36>
In formula (1) or formula (1-1), M is one or more selected from alkali metal ions and alkanolammonium ions, further sodium ion, potassium ion, triethanolammonium ion, diethanolammonium ion, and monoethanolammonium ions, and further sodium ions, according to any one of <1> to <35>.

<37>
The antifouling agent for fibers according to any one of <1> to <36>, wherein the fibers are selected from hydrophobic fibers and hydrophilic fibers.

<38>
Hydrophobic fibers include protein-based fibers, polyamide-based fibers, polyester-based fibers, polyacrylonitrile-based fibers, polyvinyl alcohol-based fibers, polyvinyl chloride-based fibers, polyvinylidene chloride-based fibers, polyolefin-based fibers, polyurethane-based fibers, and polyvinyl chloride. / Polyvinyl alcohol copolymer fiber, polyalkylene paraoxybenzoate fiber, and hydrophobic fiber selected from polyfluoroethylene fiber, milk protein casein fiber, promix, nylon, polyester, acrylic, vinylon, polyvinyl chloride , vinylidene, polyethylene, polypropylene, polyurethane, polyclaral, benzoate, and polytetrafluoroethylene.

<39>
Hydrophilic fibers include seed hair fiber (cotton, kapok, etc.), bast fiber (hemp, flax, ramie, hemp, jute, etc.), leaf vein fiber (manila hemp, sisal hemp, etc.), palm fiber, rush, straw, animal Hydrophilic selected from wool fibers (wool, mohair, cashmere, camel hair, alpaca, vicuna, angora, etc.), silk fibers (domestic silk, wild silk), feathers, and cellulosic fibers (rayon, polynosic, cupro, acetate, etc.) cotton, kapok, hemp, flax, ramie, hemp, jute, manila hemp, sisal, palm fiber, rush, straw, wool, mohair, cashmere, camel hair, alpaca, vicuna, angora, domestic silk. , wild silkworm silk, feathers, rayon, polynosic, cupra, and acetate.

<40>
The fiber is one or more selected from polyolefin fibers (polyethylene, polypropylene, etc.), polyurethane fibers (polyurethane, etc.), polyester fibers (polyester, etc.), and cotton fibers, and polyethylene, polypropylene, polyurethane, polyester, and cotton fibers, the antifouling agent for fibers according to any one of <1> to <39>.

<41>
The antifouling agent for fibers according to any one of <1> to <37>, wherein the fibers are polyolefin fibers, and at least one selected from polyethylene and polypropylene, and further polypropylene.

<42>
The antifouling agent for fibers according to any one of <1> to <37>, wherein the fibers are one or more selected from polyester fibers and cotton fibers, and further are cotton fibers.

<43>
The antifouling agent for fibers according to any one of <1> to <42>, wherein the fibers are textile products.

<44>
The textile product is a textile product using fibers selected from hydrophobic fibers and hydrophilic fibers, and further textile products using fibers selected from hydrophobic fibers and hydrophilic fibers, which are fabrics (woven fabrics) and knitted fabrics. , and non-woven fabrics, and further textile products obtained using textile products selected from the fabric (woven fabric), the knitted fabric, and the non-woven fabric, which are undershirts, T-shirts, dress shirts, blouses , slacks, knitted clothes, socks, underwear, tights, hats, bedding, handkerchiefs, and towels.

<45>
The textile product is a textile product containing one or more selected from polyolefin fibers, polyurethane fibers, polyester fibers, and cotton fibers, preferably from polyolefin fibers, polyurethane fibers, polyester fibers, and cotton fibers. The antifouling agent for fibers according to <43> or <44>, which is a textile product selected from fabrics (woven fabrics), knitted fabrics, and non-woven fabrics, containing one or more selected fibers.

<46>
The antifouling agent for fibers according to <45>, wherein the polyolefin fibers are fibers selected from polyethylene and polypropylene, the polyurethane fibers are polyurethane, and the polyester fibers are polyester.

<47>
The content of the polyolefin fiber in the fiber or fiber product is preferably 70% by mass or more, more preferably 80% by mass or more, and still more preferably 100% by mass. Any one of <1> to <46> The antifouling agent for textiles described in

<48>
The content of polyurethane fibers in the fiber or textile product is preferably 5% by mass or more, more preferably 10% by mass or more, and preferably 20% by mass or less, more preferably 15% by mass or less. , the antifouling agent for fibers according to any one of <1> to <47>.

<49>
The content of the polyester fiber in the fiber or textile product is preferably 65% by mass or more, more preferably 80% by mass or more, and preferably 100% by mass or less, more preferably 90% by mass or less. , the antifouling agent for fibers according to any one of <1> to <48>.

<50>
The content of cotton fiber in the fiber or textile product is preferably 5% by mass or more, more preferably 10% by mass or more, still more preferably 15% by mass or more, still more preferably 20% by mass or more, and still more preferably The antifouling agent for fibers according to any one of <1> to <49>, which is 100% by mass.

<51>
<1>- The antifouling agent for fibers according to any one of <50>.

<52>
<1>- The antifouling agent for fibers according to any one of <51>.

<53>
(I) The antifouling agent for fibers according to <52>, wherein the lipid is at least one lipid selected from oleic acid, squalene, liquid paraffin, and triglyceride, triglyceride, and triolein.

<54>
(a) component, preferably 0.01% o.o. w. f. above, more preferably 0.05% o.o. w. f. above, more preferably 0.1% o.o. w. f. Above, more preferably 0.2% o.o. w. f. Above, more preferably 0.3% o.o. w. f. above and preferably 3% o.d. w. f. below, more preferably 2% o.o. w. f. below, more preferably 1% o.o. w. f. Below, more preferably 0.7% o.o. w. f. Below, more preferably 0.5% o.o. w. f. The antifouling agent for fibers according to any one of <1> to <53>, which is used in contact with the fibers in the following amount.

<55>
0.01% o.d. of component (a) to fiber w. f. above, preferably 0.05% o.d. w. f. above, more preferably 0.1% o.o. w. f. above, more preferably 0.2% o.o. w. f. Above, more preferably 0.3% o.o. w. f. above and 3% o.d. w. f. below, preferably 2% o.o. w. f. below, more preferably 1% o.o. w. f. below, more preferably 0.7% o.o. w. f. Below, more preferably 0.5% o.o. w. f. The antifouling agent for fibers according to any one of <1> to <54>, which is used as a treatment liquid and contained in the following amounts.

<56>
The antifouling agent for fibers according to any one of <1> to <55>, which is produced by mixing a predetermined amount of component (a) with water.

<57>
The antifouling agent for fibers according to any one of <1> to <56>, which is obtained by diluting a precursor composition containing the component (a) with water.

<58>
The antifouling agent for fibers described in <57>, which is prepared by diluting the precursor composition immediately before use.

<59>
The precursor composition contains component (a) in an amount of preferably 0.01% by mass or more, more preferably 0.05% by mass or more, still more preferably 0.1% by mass or more, and preferably 10% by mass or less, and more The antifouling agent for fibers described in <57> or <58>, which preferably contains 5% by mass or less and is a composition further containing water.

<60>
<1> to <59>.

<61>
Viscosity at 25° C. is preferably 3 mPa·s or more, more preferably 10 mPa·s or more, and preferably 5,000 mPa·s or less, more preferably 2,500 mPa·s or less, <1> to <60>.

<62>
The antifouling agent is diluted with water to 10 times or more and less than 10,000 times, preferably 50 times or more and less than 5,000 times to prepare an antifouling agent composition (treatment liquid), which is used for treating an object to be treated. The antifouling agent for fibers according to any one of <1> to <61>, which is used in the method.

<63>
A method for preventing soiling of fibers, comprising contacting fibers with a compound represented by the following formula (1) (hereinafter referred to as component (a)).

[In the formula, R ¹ and R ² are each a hydrocarbon group, and the total carbon number of R ¹ and R ² is 17 or more and 25 or less. A ¹ O and A ² O are alkyleneoxy groups in which A ¹ and A ² are alkylene groups having 2 or more and 4 or less carbon atoms, respectively. x1 and x2 are the average number of moles added, each being a number of 0 or more and 10 or less, and M is a cation. ]
<64>
The antifouling method for fibers according to <63>, wherein at least one of x1 and x2 in the formula (1) is 0.

<65>
The antifouling method for fibers according to <63> or <64>, wherein the component (a) is a compound represented by the following formula (1-1).

<66>
In formula (1) or formula (1-1), the number of carbon atoms in the hydrocarbon groups of R ¹ and R ² is preferably 6 or more, more preferably 8 or more, still more preferably 9 or more, and even more preferably 10. above, and preferably 24 or less, more preferably 20 or less, still more preferably 17 or less, and even more preferably 12 or less, and the number of carbon atoms of the hydrocarbon groups of R ¹ and R ² is, respectively, Preferably 6 or more, more preferably 8 or more, still more preferably 9 or more, still more preferably 10 or more, and preferably 17 or less, still more preferably 12 or less, any of <63> to <65> A method for preventing soiling of fibers according to the above.

<67>
In formula (1) or formula (1-1), the total carbon number of R ¹ and R ² is preferably 18 or more, more preferably 20 or more, and 25 or less, preferably 24 or less, <63 > to the antifouling method for the fiber described in any one of <66>.

<68>
In formula (1) or formula (1-1), the hydrocarbon groups of R ¹ and R ² are each straight chain or branched chain, further branched chain, any of <63> to <67> A method for preventing soiling of fibers according to the above.

<69>
In formula (1) or formula (1-1), each of the hydrocarbon groups of R ¹ and R ² is a branched chain and has a side chain with 2 or more carbon atoms, and further 3 or more carbon atoms, <63>~ The antifouling method for fibers according to any one of <68>.

<70>
In formula (1) or formula (1-1), each of the hydrocarbon groups of R ¹ and R ² is a branched chain, and the total number of carbon atoms in the side chains is 10 or less, further 8 or less, further 6 or less. The antifouling method for fibers according to any one of <63> to <69>.

<71>
In formula (1) or formula (1-1), the hydrocarbon groups of R ¹ and R ² are each saturated or unsaturated, further linear and unsaturated, <63> to <70 The antifouling method for the fiber described in any of >.

<72>
any one of <63> to <71>, wherein at least one of R ¹ and R ² in formula (1) or formula (1-1) is a hydrocarbon group having a branched structure or an unsaturated bond; A method for repelling the fabric described.

<73>
The method for preventing stains on fibers according to any one of <63> to <72>, wherein at least one of R ¹ and R ² in formula (1) or formula (1-1) is a branched alkyl group.

<74> In formula (1) or formula (1-1), the hydrocarbon groups of R ¹ and R ² are each a saturated branched-chain hydrocarbon group or an unsaturated straight-chain hydrocarbon group, <63> to <73>, the antifouling method for the fiber.

<75>
In formula (1) or formula (1-1), the hydrocarbon groups of R ¹ and R ² are each a branched hydrocarbon group and further a group derived from Guerbet alcohol, <63> to <74>.

<76>
In formula (1) or (1-1), the hydrocarbon groups of R ¹ and R ² are each a branched chain hydrocarbon group having 10 carbon atoms, and a branched chain alcohol having 10 carbon atoms. The antifouling method for fibers according to any one of <63> to <75>, which is the derived group.

<77>
In formula (1) or formula (1-1), R ¹ and R ² are each a branched-chain alkyl group having 10 or more and 12 or less carbon atoms, or a branched-chain alkyl group having 10 carbon atoms, <63> to the antifouling method for the fiber described in any one of <76>.

<78>
In formula (1) or formula (1-1), each of R ¹ and R ² is a branched alkyl group having 10 or more and 12 or less carbon atoms, and the total number of carbon atoms of the groups constituting the side chains is Each is preferably 1 or more, more preferably 2 or more, and preferably 4 or less, more preferably 3 or less, and still more preferably 3. The fiber resistance according to any one of <63> to <77> dirty way.

<79>
In formula (1) or (1-1), each of R ¹ and R ² is a branched chain, and the number of side chains is 1 or more, preferably 3 or less, and more preferably 2. The antifouling method for fibers according to any one of <63> to <78> below.

<80>
any of <63> to <79>, wherein in formula (1) or (1-1), each of R ¹ and R ² is a branched chain, and the number of side chains is 1; The antifouling method for fibers described in .

<81>
In formula (1) or (1-1), each of R ¹ and R ² is a branched chain, and each side chain is a straight chain, any of <63> to <80> A method for repelling the fabric described.

<82>
In formula (1) or formula (1-1), each of R ¹ and R ² is a branched alkyl group having 10 to 12 carbon atoms, and the number of branched carbon atoms in R ¹ and R ² is , 1 or more, preferably 3 or less, and even more preferably 2 or less, the method for preventing soiling of fibers according to any one of <63> to <81>.

<83>
In formula (1) or formula (1-1), each of R ¹ and R ² is a branched chain, and the number of branched carbon atoms in each of R ¹ and R ² is 1, <63>~ The antifouling method for fibers according to any one of <82>.

<84>
In formula (1) or (1-1), each of R ¹ and R ² is a branched alkyl group having 10 or more and 12 or less carbon atoms, and the number of carbon atoms in the main chain is independently 7 or 8, and the number of carbon atoms in the groups constituting the side chain is preferably 1 or more and 4 or less, more preferably 2 or more and 4 or less, still more preferably 2 or more and 3 or less, and still more 3, and the side chain is preferably 3 or less, more preferably 2 or less, and still more preferably 1, respectively.

<85>
In formula (1) or (1-1), each of R ¹ and R ² is a branched-chain alkyl group selected from a branched-chain decyl group and a branched-chain dodecyl group, and further a branched-chain decyl group; The antifouling method for fibers according to any one of <63> to <84>.

<86>
The branched decyl group is a group selected from a 2-propylheptyl group and a group derived from a branched decyl alcohol (eg, decyl alcohol manufactured by KH Neochem Co., Ltd.), a 2-propylheptyl group, and a branched dodecyl The antifouling method for fibers described in <85>, wherein the group is a 2-butyloctyl group.

<87>
The antifouling method for fibers according to any one of <63> to <87>, wherein in formula (1) or (1-1), the hydrocarbon group of R ¹ and the hydrocarbon group of R ² are different.

<89>
The antifouling method for fibers according to any one of <63> to <88>, wherein in formula (1) or (1-1), the number of carbon atoms in R ¹ and the number of carbon atoms in R ² are different.

<88>
In formula (1) or formula (1-1), the hydrocarbon group of R ¹ and the hydrocarbon group of R ² are the same, The fiber prevention according to any one of <63> to <86> dirty way.

<90>
The antifouling method for fibers according to <88>, wherein in formula (1) or (1-1), the number of carbon atoms in R ¹ and the number of carbon atoms in R ² are the same.

<91>
<63> to <90, wherein at least one of R ¹ and R ² in formula (1) or formula (1-1) is a branched alkyl group selected from a 2-propylheptyl group and a 2-butyloctyl group; The antifouling method for the fiber described in any of >.

<92>
<63> to <86>, wherein the compound represented by formula (1) is at least one selected from di(2-propylheptyl)sulfosuccinate and di(2-butyloctyl)sulfosuccinate. The antifouling method for fibers described in any of the above.

<93>
In formula (1) or formula (1-1), M is a cation other than a hydrogen ion, and is one or more selected from alkali metal ions, alkaline earth metal ions, and organic ammonium ions. Furthermore, one or more selected from lithium ion, sodium ion, potassium ion, calcium ion, barium ion, triethanolammonium ion, diethanolammonium ion, monoethanolammonium ion, trimethylammonium ion, and monomethylammonium ion <63> to the antifouling method for the fiber described in any one of <93>.

<94>
In formula (1) or formula (1-1), M is one or more selected from alkali metal ions and alkanolammonium ions, further sodium ion, potassium ion, triethanolammonium ion, diethanolammonium ion, and monoethanolammonium ions, and sodium ions, according to any one of <63> to <93>.

<95>
(a) component, preferably 0.01% o.o. w. f. above, more preferably 0.05% o.o. w. f. above, more preferably 0.1% o.o. w. f. Above, more preferably 0.2% o.o. w. f. Above, more preferably 0.3% o.o. w. f. above and preferably 3% o.d. w. f. below, more preferably 2% o.o. w. f. below, more preferably 1% o.o. w. f. Below, more preferably 0.7% o.o. w. f. Below, more preferably 0.5% o.o. w. f. The antifouling method for a fiber according to any one of <63> to <94>, wherein the fiber is brought into contact with the fiber in an amount of:

<96>
The antifouling method for fibers according to any one of <63> to <95>, wherein a treatment liquid containing the component (a) and water is brought into contact with the fibers.

<97>
0.01% o.d. of component (a) to fiber w. f. above, preferably 0.05% o.d. w. f. above, more preferably 0.1% o.o. w. f. above, more preferably 0.2% o.o. w. f. Above, more preferably 0.3% o.o. w. f. above and 3% o.d. w. f. below, preferably 2% o.o. w. f. below, more preferably 1% o.o. w. f. below, more preferably 0.7% o.o. w. f. Below, more preferably 0.5% o.o. w. f. The antifouling method for fibers according to any one of <63> to <96>, wherein the fibers are contacted with a treatment liquid containing the following amount.

<98>
The treatment liquid contains component (a) at 0.01% o.o. w. f. above 5% o.o. w. f. The antifouling method for fibers described in <96> or <97>, containing in the following amount.

<99>
The antifouling method for fibers according to any one of <96> to <98>, wherein the treatment liquid is prepared by mixing the component (a) and water.

<100>
The antifouling method for fibers according to any one of <96> to <99>, wherein the treatment liquid is prepared by diluting a precursor composition containing the component (a) with water.

<101>
The antifouling method for fibers according to any one of <96> to <100>, wherein the treatment liquid is prepared immediately before contacting the fibers.

<102>
The precursor composition contains component (a) in an amount of preferably 0.01% by mass or more, more preferably 0.05% by mass or more, still more preferably 0.1% by mass or more, and preferably 10% by mass or less, and more The antifouling method for fibers according to any one of <96> to <101>, preferably containing 5% by mass or less.

<103>
The antifouling method for fibers according to any one of <96> to <102>, wherein the precursor composition contains water.

<104>
The pH of the treatment liquid at 25° C. is preferably 2 or higher, more preferably 4 or higher, still more preferably 5 or higher, and preferably 10 or lower, more preferably 9 or lower, and still more preferably 8 or lower. 96> to <103>, the antifouling method for the fiber.

<105>
The viscosity of the treatment liquid at 25° C. is preferably 3 mPa·s or more, more preferably 10 mPa·s or more, and preferably 5,000 mPa·s or less, more preferably 2,500 mPa·s or less. 96> to <104>, the antifouling method for the fiber.

<106>
An antifouling agent composition (treated The antifouling method for fibers according to any one of <63> to <105>, wherein a liquid) is prepared and used for treating an object to be treated.

<107>
The antifouling method for fibers according to any one of <63> to <106>, which is carried out in the presence of a surfactant [excluding component (a)].

<108>
The fiber according to <107>, wherein the surfactant is at least one selected from anionic surfactants [excluding component (a)], nonionic surfactants, and cationic surfactants. Antifouling method.

<109>
The fiber described in <107> or <108>, wherein the surfactant is preferably at least one selected from anionic surfactants [excluding component (a)] and nonionic surfactants. Antifouling method.

<110>
Anionic surfactants [except for component (a)] are alkyl sulfates, polyoxyalkylene alkyl ether sulfates, alkanesulfonates, alkylbenzenesulfonates, higher fatty acids or salts thereof, polyoxyethylene alkyl The antifouling method for fibers according to <109>, which is selected from ethercarboxylic acid or its salt, N-acylamino acid or its salt, alkyl phosphate, and polyoxyethylene alkyl ether phosphate.

<111>
The antifouling method for fibers according to <109> or <110>, wherein the alkyl group of the anionic surfactant has from 8 to 20 carbon atoms.

<112>
Any one of <109> to <111>, wherein the average number of added moles of the oxyalkylene group or oxyethylene group of the anionic surfactant is 0 or more and 4 or less, and is more than 0 and 4 or less. Antifouling method for textiles.

<113>
The antifouling method for fibers according to any one of <109> to <112>, wherein the salt of the anionic surfactant is an alkali metal salt such as sodium salt or potassium salt.

<114>
Nonionic surfactants include alkyl monoglyceryl ethers, polyoxyalkylene monoalkyl or alkenyl ethers, alkyl (poly)glycosides (glycoside-type nonionic surfactants), sorbitan-based nonionic surfactants, aliphatic alkanolamides, and fatty acids. <109> to <113>, selected from monoglycerides, sucrose fatty acid esters, and amides of alkanolamines such as monoethanolamine, diethanolamine and methylmonoethanolamine with fatty acids such as lauric acid and myristic acid Antifouling method for treated fibers.

<115>
The antifouling method for fibers according to any one of <109> to <114>, wherein the alkyl group or alkenyl group of the nonionic surfactant has 6 to 18 carbon atoms.

<116>
The antifouling method for fibers according to any one of <109> to <115>, wherein the nonionic surfactant has an average added mole number of oxyalkylene groups of 3 or more and 25 or less.

<117>
Surfactants include sodium salt of internal olefin sulfonic acid having 18 carbon atoms, sodium dodecylbenzene sulfonate, and sodium polyoxyethylene/polyoxypropylene lauryl ether sulfate (e.g., ethylene oxide average addition mole number 1.5, propylene Oxide average added mole number 0.4, a compound in which a polyoxyethylene group and a polyoxypropylene group are block-bonded in this order to a lauryl group), and polyoxyethylene lauryl ether (e.g., ethylene oxide average added mole number 8), and poly The antifouling method for fibers according to any one of <109> to <116>, wherein the surfactant is one or more surfactants selected from oxyethylene lauryl ether (eg, ethylene oxide average added mole number: 21).

<118>
The dirt to be antifouled is dirt containing at least one selected from (I) lipids, (II) carbon black, (III) mud particles, (IV) microorganisms, and (V) viruses, <63>~ <117> The antifouling method for fibers according to any one of <117>.

<119>
(I) The antifouling method for fibers described in <118>, wherein the lipid is at least one lipid selected from oleic acid, squalene, liquid paraffin, and triglyceride, triglyceride, and triolein.

<120>
The antifouling method for fibers according to any one of <63> to <119>, wherein the fibers are selected from hydrophobic fibers and hydrophilic fibers.

<121>
Hydrophobic fibers include protein-based fibers, polyamide-based fibers, polyester-based fibers, polyacrylonitrile-based fibers, polyvinyl alcohol-based fibers, polyvinyl chloride-based fibers, polyvinylidene chloride-based fibers, polyolefin-based fibers, polyurethane-based fibers, and polyvinyl chloride. / Polyvinyl alcohol copolymer fiber, polyalkylene paraoxybenzoate fiber, and hydrophobic fiber selected from polyfluoroethylene fiber, milk protein casein fiber, promix, nylon, polyester, acrylic, vinylon, polyvinyl chloride , vinylidene, polyethylene, polypropylene, polyurethane, polyclaral, benzoate, and polytetrafluoroethylene.

<122>
Hydrophilic fibers include seed hair fiber (cotton, kapok, etc.), bast fiber (hemp, flax, ramie, hemp, jute, etc.), leaf vein fiber (manila hemp, sisal hemp, etc.), palm fiber, rush, straw, animal Hydrophilic selected from wool fibers (wool, mohair, cashmere, camel hair, alpaca, vicuna, angora, etc.), silk fibers (domestic silk, wild silk), feathers, and cellulosic fibers (rayon, polynosic, cupro, acetate, etc.) cotton, kapok, hemp, flax, ramie, hemp, jute, manila hemp, sisal, palm fiber, rush, straw, wool, mohair, cashmere, camel hair, alpaca, vicuna, angora, domestic silk. , wild silkworm silk, feathers, rayon, polynosic, cupra, and acetate.

<123>
The fiber is one or more selected from polyolefin fibers (polyethylene, polypropylene, etc.), polyurethane fibers (polyurethane, etc.), polyester fibers (polyester, etc.), and cotton fibers, and polyethylene, polypropylene, polyurethane, polyester, and a cotton fiber.

<124>
The antifouling method for fibers according to any one of <63> to <120>, wherein the fibers are polyolefin fibers, and at least one selected from polyethylene and polypropylene, and further polypropylene.

<125>
The antifouling method for fibers according to any one of <63> to <120>, wherein the fibers are one or more selected from polyester fibers and cotton fibers, and further are cotton fibers.

<126>
The antifouling method for fibers according to any one of <63> to <125>, wherein the fibers are textile products.

<127>
The textile product is a textile product using fibers selected from hydrophobic fibers and hydrophilic fibers, and further textile products using fibers selected from hydrophobic fibers and hydrophilic fibers, which are fabrics (woven fabrics) and knitted fabrics. , and non-woven fabrics, and further textile products obtained using textile products selected from the fabric (woven fabric), the knitted fabric, and the non-woven fabric, which are undershirts, T-shirts, dress shirts, blouses , slacks, knitted clothes, socks, underwear, tights, hats, bedding, handkerchiefs, and towels.

<128>
The textile product is a textile product containing one or more selected from polyolefin fibers, polyurethane fibers, polyester fibers, and cotton fibers, preferably from polyolefin fibers, polyurethane fibers, polyester fibers, and cotton fibers. The antifouling method for fibers according to <126> or <127>, which is a textile product selected from fabrics (woven fabrics), knitted fabrics, and non-woven fabrics, containing one or more selected fibers.

<129>
The antifouling method for fibers according to <128>, wherein the polyolefin fibers are fibers selected from polyethylene and polypropylene, the polyurethane fibers are polyurethane, and the polyester fibers are polyester.

<130>
The content of the polyolefin fiber in the fiber or fiber product is preferably 70% by mass or more, more preferably 80% by mass or more, and still more preferably 100% by mass. Any of <63> to <129> A method for preventing soiling of fibers according to the above.

<131>
The content of polyurethane fibers in the fiber or textile product is preferably 5% by mass or more, more preferably 10% by mass or more, and preferably 20% by mass or less, more preferably 15% by mass or less. , <63> to <130>.

<132>
The content of the polyester fiber in the fiber or textile product is preferably 65% by mass or more, more preferably 80% by mass or more, and preferably 100% by mass or less, more preferably 90% by mass or less. , the antifouling method for fibers according to any one of <63> to <131>.

<133>
The content of cotton fiber in the fiber or textile product is preferably 5% by mass or more, more preferably 10% by mass or more, still more preferably 15% by mass or more, still more preferably 20% by mass or more, and still more preferably The antifouling method for fibers according to any one of <63> to <132>, wherein the content is 100% by mass.

<134>
The object to be treated is an object to be treated other than a hard article, an object to be treated other than a hard article having a hydrophobic surface, or an object to be treated that comes into contact with the component (a) is a hard article and has a hydrophobic surface. The antifouling method for fibers according to any one of <63> to <133>, except for hard articles.

<135>
The antifouling method for fibers according to any one of <63> to <134>, wherein the antifouling agent for fibers according to any one of <1> to <62> is brought into contact with the fibers.

<136>
Use of a composition containing a compound represented by the following formula (1) [hereinafter referred to as component (a)] as an antifouling agent for fibers.

<137>
Use of a compound represented by the following formula (1) [hereinafter referred to as component (a)] as an active ingredient of an antifouling agent for textiles.

<138>
Use of a compound represented by the following formula (1) [hereinafter referred to as component (a)] as an antifouling agent for fibers.

<139>
The use according to any one of <136> to <138>, wherein the component (a) is a compound represented by the following formula (1-1).

<140>
Any of <136> to <139>, wherein component (a) is one or more selected from di(2-propylheptyl)sulfosuccinate and di(2-butyloctyl)sulfosuccinate. use.

Examples Examples and comparative examples were carried out using the following antifouling agents and fabrics for evaluation.
<Antifouling agent>
Antifouling agent 1: Di-(2-propylheptyl) sodium sulfosuccinate [component (a)]
Antifouling agent 2: sodium di-(2-butyloctyl)sulfosuccinate [component (a)]
Comparative antifouling agent 1: sodium di-(2-ethylhexyl)sulfosuccinate [component (a')]

<Original cloth for evaluation>
Cotton 1: Cotton 2003 manufactured by Tanigashira Shoten
Cotton 2: Uniqlo Supima Cotton Relaxed Fit Crew T (short sleeve) (XL size for men, color: white, composition: 100% cotton)
Synthetic fiber/cotton: Tanigashira Shoten T/C Broad Polyester/cotton = 65/35 (mass ratio)
Synthetic fiber 1: Uniqlo AIRism (Crew neck T (short sleeve) men's L size, color: white, composition: 88% polyester, 12% polyurethane)
Synthetic fiber 2: TRUSCO polypropylene non-woven fabric (manufacturer part number: P0305050)

Example 1
(1) Preparation of Evaluation Cloth A cloth (cut into a 40 cm square) was used as an evaluation cloth after removing the sizing agent and contaminants by performing the following treatment in advance.
Using a fully automatic washing machine (manufactured by Panasonic, model number: NA-F60PB3), 36.5 g of attack high-activity bio EX (manufactured by Kao Corporation) was added as a detergent to the raw cloth for evaluation. A series of washing processes using water (50 L of water, 10 minutes of washing → 2 rinses → 9 minutes of dehydration) were repeated 5 times. Subsequently, the series of washing steps with water only was repeated three times. After that, it was allowed to stand at room temperature (23° C., 45% RH) for 24 hours for natural drying. After drying, the original fabric was cut into 40 cm squares to obtain fabrics for evaluation.

(2) Antifouling agent treatment of evaluation cloth (preparation of antifouling effect evaluation cloth)
A predetermined amount of deionized water is put into a portable washing machine (manufactured by National, model number: NA-35), and an aqueous solution of calcium chloride (equivalent to 4000° DH) is added so that the hardness of the treatment liquid becomes 4° DH. While stirring, a 5% by mass aqueous dispersion of the antifouling agent listed in Table 1 or the comparative antifouling agent 1 as a comparative example was added to a concentration of component (a) or component (a') of 0.3% o.o. w. f. After stirring for 1 minute to prepare a treatment solution, two evaluation cloths (about 155 g in total) pretreated in (1) above were added and treated for 5 minutes while stirring. . The bath ratio at this time was 30 kg/kg-fabric. Moreover, the temperature of the treatment liquid was 20 to 30°C. After the treatment, it was dehydrated for 3 minutes and dried overnight under conditions of 23° C. and 45% RH. This was cut into 3 cm squares and used as the antifouling effect determination cloth 1, and cut into 6 cm squares as the antifouling effect determination cloth 2.

(3) Preparation of Dirt Liquid Carbon black selected by the Japan Oil Chemists' Society (Asahi carbon black for washing, manufactured by Asahi Carbon Co., Ltd.) was used as the dirt.
Put 0.21 g of carbon black and 70 mL of ion-exchanged water in a 100 mL vial, mix for 30 minutes using ultrasonic waves (SHARP UT604, maximum output), and add an aqueous calcium chloride solution (equivalent to 4000 ° DH) to 4 ° DH. and shaken by hand for 10 seconds to obtain a soiled liquid.

(4) Treatment with a vertical shaker For the soiled liquid in the vial, 4 sheets each of cotton 1, cotton 2, synthetic fiber/cotton, and synthetic fiber 2 of the cloth 1 for evaluating antifouling effect were prepared. The vial was shaken for 1 minute at room temperature at 300 rpm with a vertical shaker (Strong Shaker SR-2DW, manufactured by Taitec Co., Ltd.). After that, the cloth for determining the antifouling effect was taken out from the vial, thoroughly rinsed with running tap water from Wakayama City, and dried overnight under the conditions of 23° C. and 35% RH to obtain a soil-treated cloth. For each fiber, the reflectance of four fabrics for determining the antifouling effect was measured using a Spectrophotometer SE600 manufactured by Nippon Denshoku Co., Ltd., one by one in a state where four fabrics were stacked (after measurement, one fabric was measured. ) to obtain the average reflectance. From the reflectance values of the example and the comparative example using the same kind of antifouling effect determination cloth, the antifouling property improvement rate was calculated by the following formula. Table 1 shows the results.
Antifouling property improvement rate (%) = [(Reflectance of contaminated treated cloth of Example/Reflectance of contaminated treated cloth of Comparative Example) -1] × 100
The antifouling improvement rate is obtained by comparing the reflectance of the example (using the component (a)) with the reflectance of the comparative example (using the component (a')). If the ratio shows a positive value, it means that the component (a) is superior in the antifouling effect to the component (a′). means superior. In addition, the antifouling property improvement rate of the comparative examples is 0%.

Both the hydrophilic fiber and the hydrophobic fiber show a positive value for the antifouling property improvement rate of the antifouling agent 1 of the present invention. It was found to be excellent in antifouling effect on various fibers.

Example 2
(1) Preparation of Stained Liquid Mud particles (Kanuma red clay for gardening that passed through a 200-mesh [75 μm] sieve [purchased from Kokukoen Co., Ltd. (10 Zensho-cho, Izumi-shi, Osaka)]) were used as the soil.
2.5 g of mud and 1000 mL of ion-exchanged water were placed in a 1 L beaker and stirred with a stirrer (800 rpm) for 15 minutes to obtain a dirty liquid.

(2) Treatment with a tergotometer Put 600 mL of the dirty liquid in a special stainless steel container for a tergotometer (Ueshima MS8210), add an aqueous solution of calcium chloride (equivalent to 4000° DH) so that it becomes 4° DH, and then the liquid temperature is 25 ° C. , and agitation at 85 rpm for 1 minute. After that, among the cloths 2 for determining the antifouling effect prepared in (2) of Example 1, four cloths each prepared from cotton 1, cotton 2, synthetic fiber/cotton, synthetic fiber 1, and synthetic fiber 2 were added, and the liquid was The mixture was mixed for 10 minutes under conditions of a temperature of 25° C. and stirring of 85 rpm. Otherwise, the same treatment as in Example 1 was performed to obtain a soiled treated cloth, and the rate of improvement in antifouling property was evaluated in the same manner as in Example 1. Table 2 shows the results.

Both the hydrophilic fiber and the hydrophobic fiber show a positive value in the antifouling improvement rate of the antifouling agent 1 of the present invention, and the antifouling agent 1 is more various than the comparative antifouling agent 1 with respect to mud stains. It was found that the antifouling effect on the fibers of

Example 3
(1) Preparation of stain liquid To 200 g of oleic acid (manufactured by FUJIFILM Wako Pure Chemical Industries, Ltd.), 0.2 g of the oil-soluble pigment Sudan III (manufactured by FUJIFILM Wako Pure Chemical Industries, Ltd.) was added, and ultrasonic waves (UT604 manufactured by SHARP) were added. , maximum output) was used to mix for 30 minutes, and the insoluble matter was filtered through a metal filter (200 mesh) to obtain a dirty liquid.

(2) Coating treatment Four sheets of the antifouling effect determination cloth 1 prepared in (2) of Example 1 were prepared from the synthetic fiber 2, and the stain liquid was applied to each cloth using a micropipetter. 0.2 g was dropped, left still in a constant temperature bath at 50°C for 20 minutes, and uniformly wetted and spread. After that, the cloth for determining the antifouling effect was thoroughly rinsed with running tap water from Wakayama City, placed on kitchen paper one by one, and dried overnight under the conditions of 23 ° C. and 35% RH to treat contamination. cloth. As in Example 1, the soil resistance improvement rate of the obtained soil treated cloth was evaluated. Table 3 shows the results.

Regarding synthetic fiber 2, the antifouling property improvement rate of antifouling agent 1 of the present invention shows a positive value, and for oleic acid stains (oil stains), antifouling agent 1 is better than comparative antifouling agent 1. It was found that the antifouling effect on hydrophobic fibers is excellent.

Example 4
(1) Preparation of stain liquid To 200 g of triolein (manufactured by FUJIFILM Wako Pure Chemical Industries, Ltd.), 0.2 g of the oil-soluble pigment Sudan III (manufactured by FUJIFILM Wako Pure Chemical Industries, Ltd.) was added, and ultrasonic waves (UT604 manufactured by SHARP) were added. , maximum output) was used to mix for 30 minutes, and the insoluble matter was filtered through a metal filter (200 mesh) to obtain a dirty liquid.

(2) Coating treatment The staining treatment was performed in the same manner as in Example 3, and the antifouling property improvement rate was evaluated. However, the synthetic fiber/cotton and the synthetic fiber 2 were used for the antifouling effect evaluation cloth 1, and each was evaluated separately. Table 4 shows the results.

Regarding the synthetic fiber/cotton and the synthetic fiber 2, the antifouling property improvement rate of the antifouling agent 1 of the present invention shows a positive value, and the antifouling agent 1 is more resistant to triolein stains (oil stains). It was found that the antifouling effect on various fibers is superior to that of the staining agent 1.

Example 5
(1) Preparation of Contamination Liquid The same carbon black as in Example 1 was used as the contaminant.
0.1 g to 0.25 g to 0.5 g of carbon black and 100 mL of an aqueous surfactant solution were placed in a 1 L beaker, and the carbon black was ground with a glass rod. Here, the surfactant aqueous solution is ion-exchanged water, anionic surfactant (linear alkylbenzene sulfonate sodium, Fuji Film Wako Pure Chemical Industries, Ltd.) or nonionic surfactant (Emulgen 108, Kao Corporation) were mixed so that the concentration was 1000 ppm. After the carbon black was ground, 900 mL of ion-exchanged water was added, and ultrasonic waves (UT604 manufactured by SHARP Corporation, maximum output) were used to mix for 30 minutes to obtain a dirty liquid. The amount of contamination (carbon black in this example) contained in 1 L of the contamination liquid used in the following treatment with the tergotometer is shown in the table as the contamination load (the same applies to the following examples).

(2) Treatment with a tergotometer Put 600 mL of the dirty liquid in a special stainless steel container for a tergotometer (Ueshima MS8210), add an aqueous solution of calcium chloride (equivalent to 4000° DH) so that it becomes 4° DH, and then the liquid temperature is 25 ° C. , and agitation at 85 rpm for 1 minute. After that, among the antifouling effect evaluation cloths 2, four fabrics each prepared from cotton 1, cotton 2, synthetic fiber/cotton, and synthetic fiber 1 were placed in the tergotometer containing the stain liquid, and the liquid temperature was 25 ° C. Mixing was performed for 5 minutes under the condition of stirring at 85 rpm (hereinafter also referred to as recontamination treatment). The antifouling effect determination cloth 2 used here is the same as (2) of Example 1, except that the type of antifouling agent and the concentration of the antifouling agent (antifouling agent treatment concentration) are shown. 5 conditions. In addition, the stain load when the antifouling effect evaluation cloth 2 was re-stained was as shown in Table 5, respectively. Table 5 shows the surfactant contained in the soiled liquid.
After that, the cloth for determining the antifouling effect was sufficiently rinsed with running tap water from Wakayama City and dried overnight under the conditions of 23° C. and 35% RH to obtain a resoiled cloth. For each fiber, the reflectance of four stained treated cloths was measured in the same manner as in Example 1, and the average of the reflectances was obtained. From the reflectance values of the restained fabrics of Examples and Comparative Examples that were resoiled under the same conditions, the rate of improvement in anti-soil redeposition was calculated by the following formula. Table 5 shows the results.
Redeposition prevention improvement rate (%) = [(Reflectance of redeposited cloth of Example/Reflectance of redeposited cloth of Comparative Example) -1] × 100
The rate of improvement in anti-soil redeposition is obtained by comparing the reflectance of the example (using the component (a)) with the reflectance of the comparative example (using the component (a')). If the property improvement rate shows a positive value, it means that the component (a) is superior in the antifouling effect to the component (a'). It means that it is excellent in staining effect. The rate of improvement in anti-soil redeposition of the comparative examples is 0%.

For both fabrics, the anti-stain resistance improvement rate of antifouling agent 1 and antifouling agent 2 of the present invention shows a positive value. was found to be superior to the comparative antifouling agent 1 in the antifouling effect on various fibers.

Example 6
In the same manner as in Example 5, recontamination treatment was performed under the conditions shown in Table 6, except that a soiled fluid containing mud prepared by the following method was used as the soiled fluid, and the mixing time during recontamination treatment was 5 to 10 minutes. was performed to evaluate the antifouling effect (improvement rate of anti-soil recontamination property). Table 6 shows the results.
<Method for preparing dirty liquid (mud stain)>
1 g to 2.5 g to 5 g of mud, 200 mL of an aqueous surfactant solution, and 800 mL of ion-exchanged water were placed in a 1 L beaker and stirred with a stirrer (800 rpm) for 15 minutes to obtain a dirty liquid. Here, the surfactant aqueous solution is a mixture of deionized water and a nonionic surfactant (Emulgen 108, Kao Corporation) at a concentration of 1000 ppm.

For all fabrics, the rate of improvement in resoil prevention property of the antifouling agent 1 of the present invention shows a positive value, and with respect to restaining by mud, the antifouling agent 1 is more various than the comparative antifouling agent 1. It was found to have an excellent antifouling effect on fibers.

Example 7
In the same manner as in Example 5, except that a staining liquid containing oleic acid prepared by the following method was used as the staining liquid, recontamination treatment was performed under the conditions shown in Table 7, and the antifouling effect (improvement rate of anti-recontamination property) was evaluated. evaluated. Table 7 shows the results.
<Method for preparing stain liquid (oleic acid stain)>
0.1 g to 0.25 g of oleic acid and 100 mL of an aqueous surfactant solution (the same as in Example 6) are placed in a 1 L beaker, 0.3 g of the oil-soluble pigment Sudan III is added, and ultrasonic waves (UT604 manufactured by SHARP , maximum output) for 1 minute. 900 mL of ion-exchanged water was added to this, and ultrasonic waves (UT604 manufactured by SHARP, maximum output) were used to mix for 30 minutes. .

Example 8
In the same manner as in Example 5, except that a staining liquid containing triolein prepared by the following method was used as the staining liquid, recontamination treatment was performed under the conditions shown in Table 8, and the antifouling effect (improvement rate of anti-recontamination property) was evaluated. evaluated. Table 8 shows the results.
<Method for preparing stain liquid (triolein stain)>
0.1 g to 0.25 g of triolein and 100 mL of an aqueous surfactant solution (the same as in Example 6) are placed in a 1 L beaker, 0.3 g of the oil-soluble pigment Sudan III is added, and ultrasonically (UT604 manufactured by SHARP , maximum output) for 1 minute. 900 mL of ion-exchanged water was added to this, and ultrasonic waves (UT604 manufactured by SHARP, maximum output) were used to mix for 30 minutes. .

For all fabrics, the rate of improvement in anti-soil restaining property of the antifouling agent 1 of the present invention shows a positive value. It was found that the antifouling effect on the fibers of

Claims

An antifouling agent for fibers containing a compound represented by the following formula (1).

[In the formula, R 1 and R 2 are each a hydrocarbon group, and the total carbon number of R 1 and R 2 is 17 or more and 25 or less. A 1 O and A 2 O are alkyleneoxy groups in which A 1 and A 2 are alkylene groups having 2 or more and 4 or less carbon atoms, respectively. x1 and x2 are the average number of moles added, each being a number of 0 or more and 10 or less, and M is a cation. ]
The antifouling agent for fibers according to claim 1, wherein at least one of x1 and x2 in the formula (1) is 0.
The antifouling agent for fibers according to claim 1 or 2 , wherein at least one of R1 and R2 in the formula (1) is a branched alkyl group.
The fiber according to any one of claims 1 to 3, wherein at least one of R 1 and R 2 in formula (1) is a branched alkyl group selected from 2-propylheptyl group and 2-butyloctyl group. antifouling agent.
Any one of claims 1 to 4, wherein the compound represented by formula (1) is one or more selected from di(2-propylheptyl)sulfosuccinate and di(2-butyloctyl)sulfosuccinate. The antifouling agent for textiles described in .
Claims 1 to 3, wherein the dirt to be antifouled is dirt containing at least one selected from (I) lipids, (II) carbon black, (III) mud particles, (IV) microorganisms, and (V) viruses. 5. The antifouling agent for fibers according to any one of 5.
A method for preventing soiling of fibers, comprising contacting fibers with a compound represented by the following formula (1) (hereinafter referred to as component (a)).

[In the formula, R 1 and R 2 are each a hydrocarbon group, and the total carbon number of R 1 and R 2 is 17 or more and 25 or less. A 1 O and A 2 O are alkyleneoxy groups in which A 1 and A 2 are alkylene groups having 2 or more and 4 or less carbon atoms, respectively. x1 and x2 are the average number of moles added, each being a number of 0 or more and 10 or less, and M is a cation. ]
The method for preventing soiling of fibers according to claim 7, wherein the treatment liquid containing the component (a) and water is brought into contact with the fibers.
The treatment liquid contains component (a) at 0.01% o.o. w. f. above 3% o.o. w. f. The antifouling method for fibers according to claim 7 or 8, containing in the following amount.
The antifouling method for fibers according to any one of claims 7 to 9, which is carried out in the presence of a surfactant [except for component (a)].
The fiber according to claim 10, wherein the surfactant is at least one selected from anionic surfactants [excluding component (a)], nonionic surfactants, and cationic surfactants. Antifouling method.
Claims 7 to 7, wherein the dirt to be antifouled is dirt containing at least one selected from (I) lipids, (II) carbon black, (III) mud particles, (IV) microorganisms, and (V) viruses. 12. The antifouling method for fibers according to any one of 11.
The antifouling method for fibers according to any one of claims 5 to 9, wherein at least one of x1 and x2 in the formula (1) is 0.
The antifouling method for fibers according to any one of claims 5 to 10, wherein at least one of R 1 and R 2 in the formula (1) is a branched alkyl group.
The fiber according to any one of claims 7 to 14, wherein at least one of R 1 and R 2 in formula (1) is a branched alkyl group selected from 2-propylheptyl group and 2-butyloctyl group. antifouling method.
Any one of claims 7 to 15, wherein the compound represented by formula (1) is one or more selected from di(2-propylheptyl)sulfosuccinate and di(2-butyloctyl)sulfosuccinate. The antifouling method for fibers described in .
The antifouling method for fibers according to any one of claims 7 to 16, wherein the antifouling agent for fibers according to any one of claims 1 to 6 is brought into contact with the fibers.