Scouring agent composition, method for producing scoured fiber, and method for scouring fiber

Abstract

Provided are a scouring agent composition which hardly inhibits adhesion of a dye to a fiber during dyeing, and does not require pH adjustment at the time of dyeing, a method for producing a scoured fiber, and a method for scouring a fiber.　This scouring agent composition contains an amphoteric surfactant (A) and a Bronsted acid compound (B). The amphoteric surfactant (A) contains at least one compound selected from a compound represented by general formula (1) in claim 1 and a compound represented by general formula (2). The scouring agent composition has an acid value (AV) of a nonvolatile content of 18-120 mgKOH / g.

Description

Scouring agent composition, method for producing scoured fiber, and method for scouring fiber

[0001] The present invention relates to a scouring agent composition, a method for producing a scouring fiber, and a method for scouring a fiber.

[0002] In recent years, agents containing silicone components have been used in various processes, such as fiber spinning and weaving. Silicone components are generally highly lipophilic. Therefore, prior to dyeing fibers to which silicone components are attached, a scouring process is required to remove the silicone components from the raw fibers. A typical example of a fiber containing a silicone component is a composite fiber in which a highly elastic polyurethane fiber is coated with other synthetic fibers. In the spinning process for producing polyurethane fibers, a spinning oil containing a large amount of silicone components is usually used to improve extensibility, smoothness, and rewindability and prevent embrittlement. As a result, the silicone component contained in the polyurethane fiber gradually leaks out and adheres to the other synthetic fibers coating the polyurethane fiber, resulting in the above-mentioned composite fiber containing a silicone component.

[0003] Conventionally, a scouring process has been carried out on this composite fiber. However, conventional scouring agents designed primarily with nonionic surfactants have insufficient degreasing effects on composite fibers containing silicone components. Furthermore, due to poor dispersibility of the silicone component in the bath, the silicone component often reattaches to the composite fiber, resulting in an increase in the amount of residual fat compared to unscouring gray fabric. The nonionic surfactant described in Reference 1 results in insufficient scouring. To improve scouring performance, scouring agents containing amphoteric surfactants described in References 2 and 3 have been developed.

[0004] JP 2000-080562 A JP 2008-248449 A JP 2014-037653 A

[0005] Scouring agents containing the above-mentioned amphoteric surfactants have still been causing problems with poor dyeing, possibly due to insufficient scouring properties. Furthermore, the amphoteric surfactants in the scouring agent composition inhibit the adhesion of dyes to fibers, resulting in problems with poor dyeing. Therefore, the object of the present invention is to provide a scouring agent composition, a method for producing scouring agent fibers, and a method for scouring fibers that inhibit the adhesion of dyes to fibers less during dyeing and do not require pH adjustment during dyeing.

[0006] As a result of intensive research into solving the above-mentioned problems, the present inventors have found that the above-mentioned problems can be solved by a scouring agent composition containing an amphoteric surfactant (A) and a Bronsted acid compound (B), wherein the acid value (AV) of the non-volatile content of the scouring agent composition is within a specific range. That is, the scouring agent composition of the present invention is a scouring agent composition containing an amphoteric surfactant (A) and a Bronsted acid compound (B), wherein the amphoteric surfactant (A) comprises at least one selected from the group consisting of compounds represented by the following general formula (1) and compounds represented by the following general formula (2), and wherein the acid value (AV) of the non-volatile content of the scouring agent composition is 18 to 120 mgKOH / g: (In formula (1), R １ , R ２ and R ３ are each independently an alkyl group having 1 to 22 carbon atoms, an alkenyl group having 1 to 22 carbon atoms, an alkylphenyl group having 7 to 22 carbon atoms, or -(A １ O) ｎ -R ５ R is an organic group represented by the formula: ４ is an alkylene group having 1 to 10 carbon atoms or an alkylphenylene group having 7 to 17 carbon atoms. １－ is a carboxylate anion (-COO － ), sulfate ester type anion (-OSO ３ － ) or sulfonic acid type anion (-SO ３ － ) A １ is an alkylene group having 2 to 4 carbon atoms. ５ is a hydrogen atom or an alkyl group having 1 to 30 carbon atoms. n is an oxyalkylene group. １is the number of repeating O (the number of moles of oxyalkylene groups added). (In formula (2), R ６ , R ７ and R ８ are each independently an alkyl group having 1 to 22 carbon atoms, an alkenyl group having 1 to 22 carbon atoms, an alkylphenyl group having 7 to 22 carbon atoms, or -(A ２ O) ｎ -R １０ R is an organic group represented by the formula: ９ is an alkylene group having 1 to 10 carbon atoms or an alkylphenylene group having 7 to 17 carbon atoms. ２－ is a carboxylate anion (-COO － ), sulfate ester type anion (-OSO ３ － ) or sulfonic acid type anion (-SO ３ － ) A ２ is an alkylene group having 2 to 4 carbon atoms. １０ is a hydrogen atom or an alkyl group having 1 to 30 carbon atoms. n is an oxyalkylene group. ２ is the number of repeating O (the number of moles of oxyalkylene groups added).

[0007] The ratio (W / AV) of the weight percentage (W%) of the amphoteric surfactant in the scouring agent composition to the acid value (AV) is preferably 0.05 to 1.5. The Bronsted acid compound (B) is preferably at least one selected from compounds having a carboxyl group, inorganic acids, sulfonic acid compounds, acidic phosphate esters, and phosphonic acid compounds. The compound having a carboxyl group preferably includes an ether carboxylic acid compound. The acidic phosphate ester preferably includes a compound represented by the following general formula (3): (In formula (3), R １１ represents an alkyl group, an alkenyl group, or an aryl group having 6 to 22 carbon atoms. ３is an alkylene group having 2 to 4 carbon atoms. n represents the number of moles of oxyalkylene groups added and is an integer of 0 to 20. a and b are each 1 or 2, and are integers that satisfy the relationship a+b=3.) The weight ratio of the amphoteric surfactant (A) to the Bronsted acid compound (B) (amphoteric surfactant (A) / Bronsted acid compound (B)) is preferably 95 / 5 to 5 / 95. It is preferably used for polyurethane fibers or for composite fibers composed of polyurethane fibers and fibers other than polyurethane fibers.

[0008] The method for producing a scoured fiber of the present invention includes a step of scouring raw fibers containing a silicone component in a bath containing the above-mentioned scouring agent composition. The method for scouring fibers of the present invention includes a step of scouring raw fibers containing a silicone component in a bath containing the above-mentioned scouring agent composition.

[0009] The scouring agent composition of the present invention has excellent scouring properties for silicone derived from polyurethane fibers when used with fibers containing polyurethane, such as nylon / polyurethane blends, does not inhibit the adhesion of dye to fibers during dyeing, and is less likely to penetrate the scouring agent into polyurethane fibers, thereby preventing embrittlement of polyurethane fibers.

[0010] The scouring agent composition of the present invention is a scouring agent composition containing an amphoteric surfactant (A) and a Bronsted acid compound (B), and the acid value (AV) of the non-volatile matter of the scouring agent composition exhibits a specific value. The details are explained below.

[0011] [Amphoteric Surfactant] The amphoteric surfactant represented by the above general formula (1) is a surfactant that exhibits the properties of an anionic surfactant in the basic range in an aqueous solution and the properties of a cationic surfactant in the acidic range.

[0012] In general formula (1), R １ , R ２ and R ３ are each independently an alkyl group having 1 to 22 carbon atoms, an alkenyl group having 1 to 22 carbon atoms, an alkylphenyl group having 7 to 22 carbon atoms, or -(A １ O) ｎ -R ５ It is an organic group represented by the formula: １is an alkylene group having 2 to 4 carbon atoms, preferably an alkylene group having 2 to 3 carbon atoms. ５ is a hydrogen atom or an alkyl group having 1 to 30 carbon atoms. n is an oxyalkylene group. １ n is the number of repeating O (the number of moles of oxyalkylene groups added). n is preferably 1 to 30, and more preferably 1 to 20, in order to minimize the hindrance to the adhesion of the dye to the fiber during dyeing.

[0013] R is a dye that does not interfere with the adhesion of dye to fibers during dyeing. １ Similarly, from the viewpoint of further improving the refining property, R １ The number of carbon atoms in R is preferably 8 to 22, more preferably 10 to 20, still more preferably 12 to 20, and particularly preferably 14 to 18. ２ and R ３ is preferably an alkyl group. ２ and R ３ The number of carbon atoms is preferably 1 to 12, more preferably 1 to 10, even more preferably 1 to 8, and particularly preferably 1 to 6.

[0014] R ４ is an alkylene group having 1 to 10 carbon atoms or an alkylphenylene group having 7 to 17 carbon atoms. ４ The number of carbon atoms in R is preferably 1 to 8, more preferably 1 to 6, and even more preferably 1 to 4. ４ As the alkylene group, an alkylene group is preferred.

[0015] Y １－ is a carboxylate anion (-COO － ), sulfate ester type anion (-OSO ３ － ) or sulfonic acid type anion (-SO ３ － Among these, Y is the most popular because it has little effect on the adhesion of dyes to fibers during dyeing. １－ is preferably a carboxylate anion or a sulfonate anion, more preferably a carboxylate anion.

[0016] Examples of the amphoteric surfactant represented by the general formula (1) include octyl dimethylamino acetic acid betaine, lauryl dimethylamino acetic acid betaine, myristyl dimethylamino acetic acid betaine, palmityl dimethylamino acetic acid betaine, stearyl dimethylamino acetic acid betaine, oleyl dimethylamino acetic acid betaine, behenyl dimethylamino acetic acid betaine, octyl diethylamino acetic acid betaine, lauryl diethylamino acetic acid betaine, myristyl diethylamino acetic acid betaine, palmityl diethylamino acetic acid betaine, stearyl diethylamino acetic acid betaine, oleyl diethylamino acetic acid betaine, and behenyl diethylamino acetic acid betaine. alkylaminoacetic acid betaine amphoteric surfactants such as coconut oil alkyldimethylaminoacetic acid betaine and lauryl dihydroxyethylaminoacetic acid betaine; alkylene oxide adduct betaine amphoteric surfactants such as N-octyl-N,N-bis(POE(m))aminoacetic acid betaine, N-lauryl-N,N-bis(POE(m))aminoacetic acid betaine, N-myristyl-N,N-bis(POE(m))aminoacetic acid betaine and N-stearyl-N,N-bis(POE(m))aminoacetic acid betaine (note that POE represented by POE(m) represents a polyoxyethylene group, and m represents the number of moles added. The number of moles added, m, is a positive number from 1 to 30).) ; sulfobetaine amphoteric surfactants such as octyl dimethyl sulfobetaine, lauryl dimethyl sulfobetaine, myristyl dimethyl sulfobetaine, palmityl dimethyl sulfobetaine, stearyl dimethyl sulfobetaine, oleyl dimethyl sulfobetaine, behenyl dimethyl sulfobetaine, octyl diethyl sulfobetaine, lauryl diethyl sulfobetaine, myristyl diethyl sulfobetaine, palmityl diethyl sulfobetaine, stearyl diethyl sulfobetaine, oleyl diethyl sulfobetaine, behenyl diethyl sulfobetaine, coconut oil alkyl dimethyl sulfobetaine, lauryl dihydroxyethyl sulfobetaine; octyl hydroxydimethyl sulfobetaine, octyl hydroxydiethyl sulfobetaine, lauryl hydroxydimethyl sulfobetaine, lauryl hydroxydiethyl sulfobetaine alkyl hydroxysulfobetaine amphoteric surfactants such as octyl dimethyl sulfate betaine, myristyl hydroxydiethyl sulfobetaine, palmityl hydroxydimethyl sulfobetaine, palmityl hydroxydiethyl sulfobetaine, stearyl hydroxydimethyl sulfobetaine, stearyl hydroxydiethyl sulfobetaine, oleyl hydroxydimethyl sulfobetaine, oleyl hydroxydiethyl sulfobetaine, behenyl hydroxydimethyl sulfobetaine, and behenyl hydroxydiethyl sulfobetaine; sulfate betaine amphoteric surfactants such as octyl dimethyl sulfate betaine, octyl diethyl sulfate betaine, lauryl dimethyl sulfate betaine, lauryl diethyl sulfate betaine, and lauryl diethyl propyl sulfate betaine; and the like.

[0017] Among these, alkylaminoacetic acid betaine amphoteric surfactants such as octyl dimethylaminoacetic acid betaine, lauryl dimethylaminoacetic acid betaine, myristyl dimethylaminoacetic acid betaine, palmityl dimethylaminoacetic acid betaine, stearyl dimethylaminoacetic acid betaine, oleyl dimethylaminoacetic acid betaine, behenyl dimethylaminoacetic acid betaine, octyl diethylaminoacetic acid betaine, lauryl diethylaminoacetic acid betaine, myristyl diethylaminoacetic acid betaine, palmityl diethylaminoacetic acid betaine, stearyl diethylaminoacetic acid betaine, oleyl diethylaminoacetic acid betaine, and behenyl diethylaminoacetic acid betaine are preferred, as they have little effect on the adhesion of the dye to the fiber during dyeing.

[0049] Alkylaminoacetic acid betaine amphoteric surfactants such as aminoacetic acid betaine, myristyl dimethylaminoacetic acid betaine, palmityl dimethylaminoacetic acid betaine, stearyl dimethylaminoacetic acid betaine, oleyl dimethylaminoacetic acid betaine, behenyl dimethylaminoacetic acid betaine, lauryl diethylaminoacetic acid betaine, myristyl diethylaminoacetic acid betaine, palmityl diethylaminoacetic acid betaine, stearyl diethylaminoacetic acid betaine, oleyl diethylaminoacetic acid betaine, and behenyl diethylaminoacetic acid betaine are more preferred, and alkylaminoacetic acid betaine amphoteric surfactants such as stearyl dimethylaminoacetic acid betaine, oleyl dimethylaminoacetic acid betaine, and behenyl dimethylaminoacetic acid betaine are even more preferred.

[0018] Specific examples of other betaine-type amphoteric surfactants include the amphoteric surfactants represented by the above general formula (2).

[0019] In general formula (2), R ６ , R ７ and R ８ are each independently an alkyl group having 1 to 22 carbon atoms, an alkenyl group having 1 to 22 carbon atoms, an alkylphenyl group having 7 to 22 carbon atoms, or -(A ２ O) ｎ -R １０ It is an organic group represented by the formula: ２ is an alkylene group having 2 to 4 carbon atoms, preferably an alkylene group having 2 to 3 carbon atoms. １０is a hydrogen atom or an alkyl group having 1 to 30 carbon atoms. n is an oxyalkylene group. ２ n is the number of repeating O (the number of moles of oxyalkylene groups added). n is preferably 1 to 30, and more preferably 1 to 20, in order to minimize the hindrance to the adhesion of the dye to the fiber during dyeing.

[0020] Examples of the betaine-type amphoteric surfactant represented by the above general formula (2) include alkylamidobetaine amphoteric surfactants such as higher fatty acid amidopropyldimethylaminoacetic acid betaine; and amidosulfobetaine-type amphoteric surfactants such as dodecylaminomethyldimethylsulfopropylbetaine and octadecylaminomethyldimethylsulfopropylbetaine.

[0021] The method for producing the amphoteric surfactant used in the present invention is not particularly limited, and any known method can be used. In addition, commercially available amphoteric surfactants can be used as the amphoteric surfactant used in the present invention.

[0022] [Bronsted Acid Compound (B)] The Bronsted acid compound (B) is a component that, when used in combination with the amphoteric surfactant (A), reduces the inhibition of adhesion of the dye to the fiber during dyeing.

[0023] The Bronsted acid compound (B) is preferably at least one selected from a compound having a carboxyl group, an inorganic acid, a sulfonic acid compound, an acidic phosphate ester, and a phosphonic acid compound, in that it causes little inhibition of adhesion of the dye to the fiber during dyeing.

[0024] Examples of the compound having a carboxy group include saturated fatty acids such as formic acid, acetic acid, propionic acid, lactic acid, butyric acid, valeric acid, caproic acid, enanthic acid, caprylic acid, pelargonic acid, capric acid, lauric acid, myristic acid, palmitic acid, margaric acid, and stearic acid; unsaturated fatty acids such as oleic acid, linoleic acid, linolenic acid, arachidonic acid, eicosapentaenoic acid, docosahexaenoic acid, and sorbic acid; aromatic carboxylic acids such as benzoic acid, phthalic acid, isophthalic acid, terephthalic acid, and salicylic acid; propanedioic acid (malonic acid), butanedioic acid (succinic acid), pentanedioic acid (glutaric acid), and the like. ), hexanedioic acid (adipic acid), 2-methylpropanedioic acid, 2-methylbutanedioic acid, 2-methylpentanedioic acid, 1,2-cyclohexanedicarboxylic acid, 2-butenedioic acid (maleic acid, fumaric acid), 2-pentenedioic acid, 2,4-hexadienedioic acid, 2-methyl-2-butenedioic acid, 2-methyl-2-pentenedioic acid, 2-methylidenebutanedioic acid (itaconic acid), benzene-1,2-dicarboxylic acid (phthalic acid), benzene-1,3-dicarboxylic acid (isophthalic acid), benzene-1,4-dicarboxylic acid (terephthalic acid), ethanedioic acid (oxalic acid), and other dicarboxylic acid compounds.

[0025] The compound having a carboxy group preferably includes an ether carboxylic acid compound, since this will less hinder the adhesion of the dye to the fiber during dyeing.

[0026] The ether carboxylic acid compound refers to a compound having at least one ether bond in the main chain of the compound and at least one carboxyl group in the main chain of the compound. Examples of the ether carboxylic acid compound include compounds represented by the following general formula (4):

[0027] (In the formula, R １２ represents an organic group, Z represents —O— or —CONH—, and A ４ represents an oxyalkylene group having 2 to 4 carbon atoms, and R １３ represents an alkylene group having 1 to 3 carbon atoms; X represents a hydrogen atom, an alkali metal atom, an ammonium group, or an organic amine group; and t is a number from 1 to 50.

[0028] R １２is an organic group. Examples of the organic group include an alkyl group, a cycloalkyl group, an aryl group, an aralkyl group, and an alkenyl group. The number of carbon atoms in the organic group is preferably 1 to 50, more preferably 4 to 30, still more preferably 6 to 22, and particularly preferably 8 to 18.

[0029] A ４ represents an alkylene group having 2 to 4 carbon atoms; A ４ O represents an oxyalkylene group. That is, it represents an oxyethylene group, an oxypropylene group, or an oxybutylene group. As the oxyalkylene group, an oxyethylene group or an oxypropylene group is preferred, and an oxyethylene group is more preferred. t is a number from 1 to 50, preferably from 2 to 40, and more preferably from 3 to 30. A polyoxyalkylene group (A ４ O) ｔ A that constitutes ４ O may be one type or two or more types. When two or more types are used, the compound may be a block adduct, an alternating adduct, or a random adduct. ４ The t in O is the number of moles of oxyalkylene groups added.

[0030] X is a hydrogen atom, an alkali metal atom, an ammonium group, or an organic amine group, and among these, a hydrogen atom is preferred from the viewpoint of suppressing the inhibition of the adhesion of the dye to the fiber during dyeing.

[0031] The inorganic acid is not particularly limited, but examples thereof include hydrochloric acid, sulfuric acid, phosphoric acid, nitric acid, etc. The sulfonic acid compound is not particularly limited, but examples thereof include 1-octyl sulfonic acid, 1-decanesulfonic acid, 1-undecanesulfonic acid, 1-lauryl sulfonic acid, 1-tridecanesulfonic acid, 1-myristyl sulfonic acid, 1-pentadecanesulfonic acid, 1-cetyl sulfonic acid, 1-heptadecanesulfonic acid, 1-stearyl sulfonic acid, isooctyl sulfonic acid, isodecanesulfonic acid, isoundecanesulfonic acid, isolauryl sulfonic acid, isotridecanesulfonic acid, isomi Examples of such compounds include listyryl sulfonic acid, isopentadecane sulfonic acid, isocetyl sulfonic acid, isoheptadecanesulfonic acid, isostearyl sulfonic acid, alkyl (mixture of 13-17 carbon atoms) sulfonic acid, diisobutyl sulfosuccinic acid, dioctyl sulfosuccinic acid, dinonyl sulfosuccinic acid, alkyl benzene sulfonic acid, polyoxyalkylene alkyl ether sulfonic acid, higher fatty acid amide sulfonic acid, alkyl sulfate monoester, polyoxyalkylene sulfate monoester, etc. These compounds may be used alone or in combination of two or more.

[0032] The acidic phosphate ester preferably includes a compound represented by the following general formula (3). In formula (3), R １１ represents an alkyl group, an alkenyl group, or an aryl group having 6 to 22 carbon atoms. R １１ A preferably has 8 to 20 carbon atoms, more preferably 10 to 18 carbon atoms. ３ represents an alkylene group having 2 to 4 carbon atoms; ３ O represents an oxyalkylene group. n represents the number of moles of oxyalkylene groups added and is an integer of 0 to 20. n is preferably 2 to 18, more preferably 2 to 16, in order to minimize the inhibition of dye adhesion to fibers during dyeing. a and b are each 1 or 2, and are integers that satisfy the relationship a+b=3.

[0033] The acidic phosphate ester represented by the above general formula (3) can be classified into an acidic phosphate monoester represented by the following general formula (5) and an acidic phosphate diester represented by the following general formula (6) depending on the combination of a and b in the formula. (R in formula (5) １１ , A ３ , A ３ O and n are the same as in formula (3). (R in formula (6) １１ , A ３ , A ３ O and n are the same as in formula (3).

[0034] The acidic phosphate ester is not particularly limited, but examples thereof include hexyl phosphate, octyl phosphate, decyl phosphate, lauryl phosphate, tridecyl phosphate, myristyl phosphate, cetyl phosphate, stearyl phosphate, behenyl phosphate, oleyl phosphate, 2-ethylhexyl phosphate, isoheptyl phosphate, isooctyl phosphate, isononyl phosphate, isodecyl phosphate, isoundecyl phosphate, isolauryl phosphate, isotridecyl phosphate, isomyristyl phosphate, isocetyl phosphate, isostearyl phosphate, and polyoxyethylene, polyoxypropylene, and polyoxybutylene adducts thereof.

[0035] Acidic phosphate esters can be produced by known methods. For example, phosphoric anhydride P ２ O ５ It can be obtained by reacting inorganic phosphoric acid such as the above with a compound having an alcoholic hydroxyl group in the molecule, such as an alcohol or a polyoxyalkylene-added alkyl ether (hereinafter simply referred to as raw material alcohol), in an arbitrary molar ratio. ２ O ５ The molar ratio is preferably 0.1 to 0.9, more preferably 0.15 to 0.7.

[0036] P ２ O ５When inorganic phosphoric acid such as phosphate is reacted with a raw material alcohol, a mixture of acidic phosphoric acid monoester and acidic phosphoric acid diester can be obtained. ２ O ５ The ratio of the resulting acidic phosphoric acid monoester to the acidic phosphoric acid diester can be adjusted by adjusting the molar ratio of the acidic phosphoric acid monoester and the acidic phosphoric acid diester. The acidic phosphoric acid ester may be either an acidic phosphoric acid monoester or an acidic phosphoric acid diester alone, but a mixture of an acidic phosphoric acid monoester and an acidic phosphoric acid diester is preferred. From the viewpoint of improving solution stability, the molar ratio of the acidic phosphoric acid monoester to the acidic phosphoric acid diester is preferably 5 / 95 to 80 / 20, more preferably 10 / 90 to 70 / 30. The molar ratio in the mixture of the acidic phosphoric acid monoester and the acidic phosphoric acid diester can be adjusted by adjusting the molar ratio of the acidic phosphoric acid monoester and the acidic phosphoric acid diester. ３１ This can be confirmed by PNMR.

[0037] The phosphonic acid compound is not particularly limited, but examples thereof include 1-hydroxyethane-1,1-diphosphonic acid, methylphosphonic acid, ethylphosphonic acid, n-propylphosphonic acid, n-butylphosphonic acid, isobutylphosphonic acid, n-pentylphosphonic acid, n-hexylphosphonic acid, neopentylphosphonic acid, n-octylphosphonic acid, phenylphosphonic acid, and benzylphosphonic acid.

[0038] [Scouring agent composition] The acid value (AV) of the nonvolatile content of the scouring agent composition is 18 to 120 mgKOH / g. If it is less than 18 mgKOH / g, poor dyeing occurs, and if it exceeds 120 mgKOH / g, scouring properties are insufficient. The acid value (AV) of the nonvolatile content of the scouring agent composition is preferably 20 to 100 mgKOH / g, more preferably 20 to 80 mgKOH / g, and even more preferably 30 to 80 mgKOH / g.

[0039] The ratio (W / AV) of the weight percentage (W%) of the amphoteric surfactant in the scouring agent composition to the acid value (AV) is preferably 0.05 to 1.5 or less, more preferably 0.1 to 1.5, even more preferably 0.2 to 1.5, and particularly preferably 0.2 to 1.2, from the viewpoint of scouring properties and dyeability.

[0040] The scouring agent composition of the present invention may contain water. The water may be pure water, distilled water, purified water, soft water, ion-exchanged water, tap water, or the like. The proportion of the amphoteric surfactant (A) in the nonvolatile content of the scouring agent composition is preferably 10 to 90% by weight, more preferably 15 to 85% by weight, and even more preferably 20 to 80% by weight. The proportion of the Bronsted acid compound (B) in the nonvolatile content of the scouring agent composition is preferably 5 to 90% by weight, more preferably 15 to 85% by weight, and even more preferably 20 to 80% by weight. Furthermore, when the scouring agent composition contains water, the proportion of water in the scouring agent composition is preferably 5 to 90% by weight, more preferably 10 to 85% by weight, and even more preferably 15 to 80% by weight.

[0041] The weight ratio of the amphoteric surfactant (A) to the Bronsted acid compound (B) (amphoteric surfactant (A) / Bronsted acid compound (B)) is preferably 95 / 5 to 5 / 95, more preferably 90 to 10, and even more preferably 80 to 20.

[0042] Furthermore, the scouring agent composition of the present invention preferably further contains an organic solvent. Specific glycols and / or glycol ethers are preferred as the organic solvent. By using specific glycols and / or glycol ethers in relation to the amphoteric surfactant (A) and the Brønsted acid (B), the solubility of the amphoteric surfactant (A) and the Brønsted acid (B) can be improved, and the stability of the scouring agent composition at low and high temperatures can be significantly improved. As a result, the scouring agent composition is easy to use, and can be uniformly added to the bath. The specific glycols and / or glycol ethers may be used alone or in combination of two or more.

[0043] Examples of specific glycols and / or glycol ethers include ethylene glycol, ethylene glycol monomethyl ether, diethylene glycol monomethyl ether, triethylene glycol monomethyl ether, ethylene glycol monoethyl ether, diethylene glycol monoethyl ether, triethylene glycol monoethyl ether, ethylene glycol monoisopropyl ether, diethylene glycol monoisopropyl ether, triethylene glycol monoisopropyl ether, ethylene glycol monobutyl ether, diethylene glycol monobutyl ether, triethylene glycol monobutyl ether, ethylene glycol monoisobutyl ether, diethylene glycol monoisobutyl ether, ethylene glycol monohexyl ether, diethylene glycol monohexyl ether, ethylene glycol mono 2-hexyl ether, diethylene glycol mono 2-hexyl ether, ethylene glycol monoallyl ether, ethylene glycol glycol ethers such as propylene glycol monomethyl ether, dipropylene glycol monomethyl ether, tripropylene glycol monomethyl ether, propylene glycol monopropyl ether, dipropylene glycol monopropyl ether, propylene glycol monobutyl ether, dipropylene glycol monobutyl ether, tripropylene glycol monobutyl ether, propylene glycol monophenyl ether; dialkyl glycol ethers such as ethylene glycol dimethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, diethylene glycol methyl ethyl ether, diethylene glycol diethyl ether, diethylene glycol dibutyl ether, dipropylene glycol dimethyl ether; and the like.

[0044] Among these, specific glycols and / or glycol ethers include ethylene glycol monomethyl ether, diethylene glycol monomethyl ether, ethylene glycol monoethyl ether, diethylene glycol monoethyl ether, ethylene glycol monoisopropyl ether, diethylene glycol monoisopropyl ether, triethylene glycol monoisopropyl ether, ethylene glycol monobutyl ether, diethylene glycol monobutyl ether, triethylene glycol monobutyl ether, ethylene glycol monoisobutyl ether, diethylene glycol monoisobutyl ether, ethylene glycol monohexyl ether, diethylene glycol monohexyl ether, ethylene glycol mono-2-hexyl ether, diethylene glycol mono-2-hexyl ether, ethylene glycol monophenyl ether, diethylene glycol monophenyl ether, ethylene glycol monobenzyl ether, diethylene glycol monobenzyl ether, propylene glycol monomethyl ether, dipropylene glycol monomethyl ether, ... Preferred are ethylene glycol monopropyl ether, dipropylene glycol monopropyl ether, propylene glycol monobutyl ether, dipropylene glycol monobutyl ether, tripropylene glycol monobutyl ether, propylene glycol monophenyl ether, diethylene glycol diethyl ether, diethylene glycol dibutyl ether and dipropylene glycol dimethyl ether, and more preferred are ethylene glycol monobutyl ether, diethylene glycol monobutyl ether, triethylene glycol monobutyl ether, ethylene glycol monoisobutyl ether, diethylene glycol monoisobutyl ether, ethylene glycol monohexyl ether, diethylene glycol monohexyl ether, ethylene glycol mono-2-hexyl ether, diethylene glycol mono-2-hexyl ether, ethylene glycol monophenyl ether, diethylene glycol monophenyl ether, ethylene glycol monobenzyl ether, diethylene glycol monobenzyl ether, propylene glycol monomethyl ether and dipropylene glycol monomethyl ether.More preferred are propylene glycol monopropyl ether, dipropylene glycol monopropyl ether, propylene glycol monobutyl ether, dipropylene glycol monobutyl ether, propylene glycol monophenyl ether, and diethylene glycol dibutyl ether.

[0045] When the amount of the amphoteric surfactant is 100 parts by weight, the proportion of the specific glycols and / or glycol ethers is preferably 5 to 90 parts by weight, more preferably 10 to 80 parts by weight, and even more preferably 15 to 70 parts by weight. The scouring agent composition of the present invention may also contain an alcohol solvent such as methanol, ethanol, propanol, isopropyl alcohol, butanol, or 3-methoxy-3-methyl-1-butanol, as long as the effects of the present invention are not impaired.

[0046] Furthermore, it is preferable that the scouring agent composition of the present invention further contains at least one component selected from urea, aromatic carboxylates, and aromatic sulfonates. In this way, by using a specific component for a specific amphoteric surfactant, the solubility of the amphoteric surfactant can be improved, and the stability of the scouring agent composition at low and high temperatures can be significantly improved. As a result, the scouring agent composition is easy to use and can be added uniformly to the bath.

[0047] Examples of the salt of an aromatic carboxylic acid include alkali metal salts, alkaline earth metal salts, ammonium salts, and ethanolamine salts, including sodium benzoate, sodium salicylate, sodium toluate, potassium benzoate, potassium salicylate, potassium toluate, calcium benzoate, calcium salicylate, calcium toluate, ammonium benzoate, ammonium salicylate, and ammonium toluate.

[0048] Examples of the salts of aromatic sulfonic acids include alkali metal salts, alkaline earth metal salts, ammonium salts, and ethanolamine salts, such as sodium benzenesulfonate, sodium toluenesulfonate, sodium xylenesulfonate, sodium cumenesulfonate, potassium toluenesulfonate, potassium xylenesulfonate, potassium cumenesulfonate, ammonium toluenesulfonate, ammonium xylenesulfonate, ammonium cumenesulfonate, sodium cresolsulfonate, and sodium phenolsulfonate.

[0049] Among these, preferred components that can improve the solubility of amphoteric surfactants and significantly improve the stability of the scouring agent composition at low and high temperatures are sodium toluenesulfonate, sodium xylenesulfonate, sodium cumenesulfonate, potassium toluenesulfonate, potassium xylenesulfonate, potassium cumenesulfonate, ammonium toluenesulfonate, ammonium xylenesulfonate, ammonium cumenesulfonate, sodium benzoate, sodium salicylate, and sodium toluate, with sodium toluenesulfonate, sodium xylenesulfonate, and sodium cumenesulfonate being more preferred.

[0050] The scouring agent composition of the present invention may contain other components in addition to those described above, provided that the effects of the present invention are not impaired. Examples of such other components include anionic surfactants, cationic surfactants, alkaline agents, chelating agents, fixing agents, and antifoaming agents.

[0051] Examples of chelating agents include polycarboxylic acids, nitrilotriacetic acid (NTA), ethylenediaminetetraacetic acid (EDTA), nitrilotrimethylenephosphonic acid, hydroxyethylidene diphosphonic acid (NTMP), phosphonic acid, glutamic acid diacetic acid, and salts thereof.

[0052] The method for producing the scouring agent composition of the present invention is not particularly limited, and any known method can be used. For example, the scouring agent composition of the present invention can be obtained by gradually adding an amphoteric surfactant to water while stirring, adding other components as needed, and mixing them uniformly.

[0053] [Method for producing scoured fiber and method for scouring fiber] The method for producing scoured fiber of the present invention includes a step of scouring raw fiber in a bath containing the scouring agent composition of the present invention. The scoured fiber refers to a fiber obtained by scouring raw fiber. The method for scouring fiber of the present invention involves scouring raw fiber in a bath containing the scouring agent composition of the present invention. The form of the raw fiber is not particularly limited, and may be any form such as yarn, knitted fabric, woven fabric, cheese, skein, or cloth.

[0054] The type of raw fiber is not particularly limited, but polyurethane fiber or a composite fiber containing polyurethane fiber is preferred. The method for combining fibers is not particularly limited, and known methods can be used. Examples of fibers other than polyurethane fiber that constitute the composite fiber include synthetic fibers such as polyester fiber, polyamide fiber, polyacrylic fiber, and vinylon fiber; natural fibers such as cotton, linen, wool, and silk; and regenerated fibers such as rayon, cupra, acetate, and lyocell. Among these fibers, composite fibers containing polyurethane fiber and polyester fiber and / or polyamide fiber are preferred as the raw fiber.

[0055] Examples of polyurethane fibers include those composed of polyurethane or polyurethane urea obtained by reacting polytetramethylene glycol (PTMG) or polyester diol with an organic diisocyanate, followed by chain extension with 1,4-butanediol, ethylenediamine, propylenediamine, pentanediamine, or the like. Polyurethane urea fibers can be produced, for example, by preparing PTMG having a molecular weight of 1,000 to 3,000 and diphenylmethane diisocyanate (MDI), reacting them in a PTMG / MDI molar ratio of 1 / 2 to 1 / 1.5 in a solvent such as dimethylacetamide or dimethylformamide, and chain-extending the resulting polyurethane urea polymer with a diamine such as ethylenediamine or propanediamine, and dry-spinning the resulting solution at a spinning speed of 400 to 1,200 m / min. There are no particular restrictions on the applicable fineness of the polyurethane fiber.

[0056] The polyester fiber means a fiber made of a polymer condensed by a reaction to form an ester bond, such as polyethylene terephthalate (PET) fiber, polylactic acid (PLA) fiber, polytrimethylene terephthalate (PTT) fiber, polybutylene terephthalate (PBT) fiber, polypropylene terephthalate (PPT) fiber, polyethylene naphthalate (PEN) fiber, or polyarylate fiber.

[0057] The polyamide fiber means a fiber that contains polyamide as an essential component and may be composited, and examples thereof include nylon 6, nylon 66, nylon 610, nylon 11, nylon 4, nylon 7, aromatic nylon (aramid), etc. Polyamide is usually obtained by condensation through a reaction that forms an amide bond.

[0058] The refining process and refining method will be described below.

[0059] The scouring process essentially includes a scouring process, and optionally includes a pre-washing process, a heat-setting process, a hot water washing process, a water washing process, a drying process, and the like, and refers to a series of processes formed by continuously combining these processes. Specifically, the individual steps constituting the scouring process include a pre-washing process in which the fabric (raw fiber) is immersed in a treatment tank to remove any attached matter; a scouring process in which the fabric is immersed in a treatment tank containing necessary chemicals to remove spinning oil, weaving oil, etc., and optionally heat-treated; a heat-setting process for preventing wrinkles and lengthening the fabric; a hot water washing process and a water washing process in which the fabric is immersed in a treatment tank to remove any attached matter and chemicals attached to the fabric; and a drying process in which the fabric is dried. Known techniques can be used as the specific method for each process. Chemicals such as penetrants, acids, and alkalis may be used in the pre-washing process. In the refining process, refining agents, alkalis, chelating agents, etc. may be used.

[0060] Examples of the process (scouring method) for scouring raw fibers using the scouring agent composition of the present invention include the following. The scouring process uses a scouring machine and may be either a conventional batch process or a continuous process. In a batch-type scouring machine, the raw fibers (woven fabric) are immersed in an aqueous solution (scouring liquid) containing the scouring agent composition in a treatment bath, and after washing, the adhering components and the like are thoroughly removed together with the scouring liquid by rinsing with hot water and / or water. The bath ratio is not particularly limited, but is usually 1:3 to 1:50, preferably 1:5 to 1:30. This removes the adhering components and the like together with the scouring liquid. Thereafter, the adhering components and the like are thoroughly removed together with the scouring liquid by rinsing with hot water and / or water.

[0061] The temperature for the scouring treatment varies depending on the type of fiber, but is between 20 and 140° C. To efficiently remove dirt, a high temperature is preferred, preferably between 50 and 110° C. In the batch method, a temperature of 80° C. or higher is preferred.

[0062] The time for the refining treatment depends on the type and amount of adhering components, etc., but is preferably 5 minutes or more, more preferably 10 minutes or more, and even more preferably 20 minutes or more in a batch-type refining treatment machine. If it exceeds 120 minutes, workability is not good, so it is preferable to wash with hot water and / or water at the stage where the adhering components, etc. have been removed. Thereafter, if necessary, a dehydration step is performed, followed by drying at 70 to 180 ° C for 30 seconds to 1 hour.

[0063] The total proportion of the amphoteric surfactant (A) and Bronsted acid (B) used in the present invention in the treatment bath (scouring solution) is preferably 0.1 to 100 g / L, more preferably 0.5 to 80 g / L, and even more preferably 1 to 50 g / L. If necessary, an alkali builder such as soda ash, caustic soda, sodium carbonate, or sodium tripolyphosphate may be used in an amount of 0.1 to 20 g / L. Furthermore, a chelating agent such as polyacrylic acid or a salt thereof, polyhydroxyacrylic acid or a salt thereof, EDTA, NTA, phosphonic acid or a salt thereof, carboxylic acid or a salt thereof, or polycarboxylic acid or a salt thereof may be used in an amount of 0.1 to 20 g / L.

[0064] The scouring agent composition of the present invention is used in the scouring step included in the scouring treatment process, but can also be used in the pre-washing step, hot water washing step, water washing step, etc.

[0065] The present invention involves dyeing the scoured fiber in a dye solution (dye bath) containing a dye. For example, the dyeing method involves mixing and stirring the dye and water in a predetermined ratio, and adding a pH adjuster, a leveling agent, etc., as needed, to prepare the dye solution (dye bath). The dye concentration is not particularly limited, but is preferably 0.01 to 50% by weight (owf) of the scoured fiber, more preferably 0.1 to 40% by weight (owf), and particularly preferably 0.2 to 30% by weight (owf).

[0066] Next, the scoured fiber is added to a dyeing solution (dye bath), and the dyeing solution (dye bath) is heated to a predetermined dyeing temperature and held at that temperature for, for example, 10 to 90 minutes to carry out the dyeing process. After the dyeing process is completed, the dyed fiber is washed with hot water, water, soaping, or the like to wash off any unfixed dye from the dyed fiber. The dyed fiber may be further subjected to a fixing treatment in order to improve fastness. There are no particular limitations on the fixing treatment method, and any known method can be used.

[0067] The present invention will be described in further detail below with reference to examples, but the present invention is not limited to these examples. In the examples, "parts" and "%" represent "parts by weight" and "% by weight," respectively. (Example 1) A raw fiber consisting of a composite fiber (mass ratio 88 / 12, knitted) of nylon fiber and polyurethane fiber was prepared. Amphoteric surfactant A-1, Bronsted acid compound B-1, organic solvent D-1, organic solvent D-2, and water were heated and mixed in the range of 50°C to 80°C to obtain the scouring agent composition shown in Table 1, and a scouring agent composition with a nonvolatile content of 42 wt% was prepared. The acid value in the scouring agent composition was 24.9 mg KOH / g, the acid value in the nonvolatile content was 59.3 mg KOH / g, the ratio (W / AV) of the weight proportion of the amphoteric surfactant to the acid value (AV) was 1.44, and the weight ratio of the amphoteric surfactant (A) to the Bronsted acid compound (B) (amphoteric surfactant (A) / Bronsted acid compound (B)) was 90 / 10. Next, the prepared scouring agent and water were placed in a dyeing pot dedicated to Minicolor (manufactured by Texam Giken Co., Ltd.), and Marpon A-20 (manufactured by Matsumoto Yushi Seiyaku Co., Ltd.) was added as a chelating agent to prepare a scouring bath with a scouring agent concentration of 2 g / L. The raw fiber was placed in the scouring bath and treated with Minicolor. The bath ratio (raw fiber weight: scouring bath weight) at that time was 1: 20. The scouring bath was heated to 95 ° C and maintained at 95 ° C for 30 minutes. The fibers were then cooled, the scouring bath was discarded, and the resulting fibers were washed in hot water for 1 minute, washed in water, and dehydrated using a centrifuge to obtain scoured fibers. Subsequently, Kayanol Milling Turquoise 3G (Nippon Kayaku Co., Ltd.) was dissolved in 30-35°C water as a dye and added to a minicolor dyeing pot, and the scoured fibers were then placed in the dye bath. The dye concentration at this time was 1.0 wt% owf of the scoured fibers. The dye bath was heated to 95°C and maintained at 95°C for 30 minutes. The fibers were then cooled, the dye bath was discarded, and the resulting dyed fibers were washed in hot water for 1 minute, washed in water, and dehydrated using a centrifuge. The resulting dyed fibers were then dried at 90°C for 1 hour, and the degreasing, dyeability, and embrittlement of the dyed fibers were evaluated using the following methods. The results are shown in Table 1.

[0068] <Degreasing ability> The dyed fibers were extracted with n-hexane for 2 hours using a Soxhlet extractor, and the amount of residual oil was measured. The amount of residual oil here refers to the weight % extracted relative to the fiber. ◎: Less than 1.00 ◯: 1.00 or more to less than 1.30 △: 1.30 or more to less than 1.60 ×: 1.60 or more

[0069] <Dyeability> The dyeability of the dyed fiber was evaluated visually according to the following criteria: ◎: No interference with the dye adhesion to the fiber was observed on the dyed fiber, and the fiber was uniformly dyed. ○: Some interference with the dye adhesion to the fiber was observed on the dyed fiber, but the fiber was almost uniformly dyed. △: Interference with the dye adhesion to the fiber was observed in patches on the dyed fiber, and the fiber was not uniformly dyed. ×: Interference with the dye adhesion to the fiber was clearly observed on the dyed fiber, and the fiber was not uniformly dyed.

[0070] <Degree of Embrittlement> The elongation of the dyed fibers was measured in accordance with the JIS-L-1018 constant load method to evaluate the degree of embrittlement of the fibers. The measurement was carried out in a measurement room maintained at a temperature of 20°C and a humidity of 65% RH using a tensile / compression tester, Technograph TG-2KN (manufactured by Minebea Co., Ltd.). Test pieces (10 cm long, 2 cm wide) were cut out, and a constant load (15 N) was applied in the wale direction to pull the dyed fibers, and the elongation was measured. The degree of embrittlement of the fibers was evaluated using the elongation of the greige fabric (blank) as the standard, as follows: ○: The elongation of the dyed fiber was 90% or more of the elongation of the greige fabric △: The elongation of the dyed fiber was more than 70% but less than 90% of the elongation of the greige fabric ×: The elongation of the dyed fiber was 70% or less of the elongation of the greige fabric

[0071] (Examples 2 to 12, Comparative Examples 1 to 9) Scouring agents and dyed fibers were produced and evaluated in the same manner as in Example 1, except that the scouring agent in Example 1 was changed as shown in Tables 1 to 4. The results are shown in Tables 1 to 4. Note that the units in the scouring agent compositions in Tables 1 to 4 are parts by weight, and the unit of acid value is mgKOH / g. Examples 5 to 12 and Comparative Examples 4 to 9 were carried out by changing the dye Kayanol Milling Turquoise 3G in Example 1 as follows: Kayanol Milling Turquoise 3G Examples 1 to 4, Comparative Examples 1 to 3 Kayanol Milling Yellow Examples 5 to 8, Comparative Examples 4 to 6 Kayanol Milling Red Examples 9 to 12, Comparative Examples 7 to 9

[0072] The details of the scouring agent compositions in Tables 1 to 4 are as follows: <Amphoteric surfactant (A)> Amphoteric surfactant A-1: ​​Lauryl dimethyl amino acetic acid betaine R １ =C １２ H ２５ R ２ and R ３ =CH ３ R ４ =CH ２ Y １－ =-COO － Amphoteric surfactant A-2: Myristyl dimethylaminoacetic acid betaine R １ =C １４ H ２９ R ２ and R ３ =CH ３ R ４ =CH ２ Y １－ =-COO － Amphoteric surfactant A-3: Stearyl dimethylaminoacetic acid betaine R １ =C １８ H ３７ R ２ and R ３ =CH ３ R ４ =CH ２ Y １－ =-COO － Amphoteric surfactant A-4: Myristylamidopropyldimethylaminoacetic acid betaine R６ =C １３ H ２７ R ７ and R ８ =CH ３ R ９ =CH ２ Y ２－ =-COO － Amphoteric surfactant A-5: coconut oil fatty acid amidopropyl dimethylaminoacetic acid betaine R ６ = residue obtained by removing the carboxyl group from coconut oil fatty acid, R ７ and R ８ =CH ３ R ９ =CH ２ Y ２－ =-COO －

[0073] <Bronsted Acid Compounds (B)> Bronsted Acid Compound B-1: Lactic acid, acid value 623 mg KOH / g Bronsted Acid Compound B-2: Dodecyl ether acetic acid to which 4.5 moles of oxyethylene groups have been added, acid value 112 mg KOH / g Bronsted Acid Compound B-3: Dodecyl ether acetic acid to which 10 moles of oxyethylene groups have been added, acid value 88 mg KOH / g Bronsted Acid Compound B-4: Into a reaction vessel under a nitrogen stream, 884 parts of an alkyl ether having 12 to 14 carbon atoms to which 3 moles of polyoxyethylene have been added (theoretical molecular weight 332, carbon number 13) were charged and the temperature was raised to about 65°C with stirring. Next, phosphoric anhydride P ２ O ５To the reaction mixture, 116 parts of a polyoxyethylene alkyl ether (theoretical molecular weight: 142) were added under stirring, and the esterification reaction was carried out at about 80°C for 2 hours to obtain Brønsted acid compound B-4 containing unreacted polyoxyethylene alkyl ether and polyoxyethylene alkyl phosphate ester. The acid value of Brønsted acid compound B-4 was 132 mg KOH / g, and the molar equivalent of phosphoric anhydride per mole of polyoxyethylene alkyl ether was 0.615. The weight proportion of polyoxyethylene alkyl phosphate ester in Brønsted acid compound B-4 was determined to be 86.7 wt% by anion exchange chromatography. Brønsted acid compound B-5: In a reaction vessel under a nitrogen stream, 958 parts of a 12-carbon alkyl ether (theoretical molecular weight: 538) to which 8 moles of polyoxyethylene had been added was charged, and the temperature was raised to about 65°C under stirring. Next, phosphoric anhydride P ２ O ５ To the reaction mixture, 42 parts of a polyoxyethylene alkyl ether (theoretical molecular weight: 142) were added under stirring, and the esterification reaction was carried out at about 80°C for 2 hours to obtain Brønsted acid compound B-5 containing unreacted polyoxyethylene alkyl ether and polyoxyethylene alkyl phosphate ester. The acid value of Brønsted acid compound B-5 was 50.4 mg KOH / g, and the molar equivalent of phosphoric anhydride per mole of polyoxyethylene alkyl ether was 0.332. The weight proportion of polyoxyethylene alkyl phosphate ester in Brønsted acid compound B-5 was determined to be 46.7 wt% by anion exchange chromatography. Brønsted acid compound B-6: Into a reaction vessel under a nitrogen stream, 976 parts of an alkyl ether having 11 to 15 carbon atoms (theoretical molecular weight: 728, assuming 13 carbon atoms) to which 12 moles of polyoxyethylene had been added was charged, and the temperature was raised to about 65°C under stirring. Next, phosphoric anhydride P ２ O ５To the mixture, 24 parts of a polyoxyethylene alkyl ether (theoretical molecular weight: 142) was added under stirring, and an esterification reaction was carried out at about 80°C for 2 hours to obtain Brønsted acid compound B-6 containing unreacted polyoxyethylene alkyl ether and polyoxyethylene alkyl phosphate ester. The acid value of Brønsted acid compound B-6 was 28 mg KOH / g, and the molar equivalent of phosphoric anhydride per mole of polyoxyethylene alkyl ether was 0.256. The weight proportion of polyoxyethylene alkyl phosphate ester in Brønsted acid compound B-6 was determined to be 32.9 wt% by anion exchange chromatography.

[0074] <Other Components C> Other component C-1: an alkyl ether having 12 to 14 carbon atoms and 9 moles of oxyethylene groups added; Other component C-2: an alkyl ether having 18 carbon atoms and 15 moles of oxyethylene groups added; Other component C-3: sodium xylene sulfonate; Other component C-4: sodium cumene sulfonate

[0075] <Organic Solvent D> Organic Solvent D-1: Propylene glycol monobutyl ether Organic Solvent D-2: Ethylene glycol monobutyl ether

[0076]

[0077]

[0078]

[0079]

[0080] As can be seen from Tables 1 and 2, the scouring agent compositions of Examples 1 to 12 of the present invention are scouring agent compositions containing an amphoteric surfactant (A) and a Bronsted acid compound (B), wherein the amphoteric surfactant (A) comprises at least one selected from the group consisting of compounds represented by the following general formula (1) and compounds represented by the following general formula (2), and the acid value (AV) of the non-volatile content of the scouring agent composition is 18 to 120 mg KOH / g, thereby solving the problem of the present application. On the other hand, as can be seen from Tables 3 and 4, the scouring agent compositions of Comparative Examples 1 to 9 do not solve any of the problems of the present application when they do not contain the Bronsted acid compound (B) (Comparative Examples 1 to 3), when they do not contain the amphoteric surfactant (A) (Comparative Examples 4 and 5), or when the acid value (AV) of the non-volatile content of the scouring agent composition is not within the range of 18 to 120 mg KOH / g (Comparative Examples 6 to 9).

Claims

1. A scouring agent composition comprising an amphoteric surfactant (A) and a Bronsted acid compound (B), wherein the amphoteric surfactant (A) comprises at least one selected from the group consisting of a compound represented by the following general formula (1) and a compound represented by the following general formula (2), and the acid value (AV) of the non-volatile matter of the scouring agent composition is 18 to 120 mg KOH / g. (In formula (1), R １ , R ２ and R ３ each independently represents an alkyl group having 1 to 22 carbon atoms, an alkenyl group having 1 to 22 carbon atoms, an alkylphenyl group having 7 to 22 carbon atoms, or -(A １ O) ｎ -R ５ R is an organic group represented by the formula: ４ is an alkylene group having 1 to 10 carbon atoms or an alkylphenylene group having 7 to 17 carbon atoms. １－ is a carboxylate anion (-COO － ), sulfate anion (-OSO ３ － ) or sulfonic acid type anion (-SO ３ － ). A １ is an alkylene group having 2 to 4 carbon atoms. ５ is a hydrogen atom or an alkyl group having 1 to 30 carbon atoms. n is an oxyalkylene group. １ is the number of repeating O (the number of moles of oxyalkylene groups added). (In formula (2), R ６ , R ７ and R ８ each independently represents an alkyl group having 1 to 22 carbon atoms, an alkenyl group having 1 to 22 carbon atoms, an alkylphenyl group having 1 to 22 carbon atoms, or -(A ２ O) ｎ -R １０ R is an organic group represented by the formula: ９ is an alkylene group having 1 to 10 carbon atoms or an alkylphenylene group having 7 to 17 carbon atoms. ２－ is a carboxylate anion (-COO － ), sulfate anion (-OSO ３ － ) or sulfonic acid type anion (-SO ３ － ). A ２ is an alkylene group having 2 to 4 carbon atoms. １０ is a hydrogen atom or an alkyl group having 1 to 30 carbon atoms. n is an oxyalkylene group. ２ is the number of repeating O (the number of moles of oxyalkylene groups added).

2. The scouring agent composition according to claim 1, wherein the ratio (W / AV) of the weight percentage (W%) of the amphoteric surfactant in the scouring agent composition to the acid value (AV) is 0.05 to 1.

5.

3. The scouring agent composition according to claim 1 or 2, wherein the Bronsted acid compound (B) is at least one selected from the group consisting of compounds having a carboxyl group, inorganic acids, sulfonic acid compounds, acidic phosphate esters and phosphonic acid compounds.

4. The scouring agent composition according to claim 3, wherein the compound having a carboxy group includes an ether carboxylic acid compound.

5. The scouring agent composition according to claim 3, wherein the acidic phosphate ester comprises a compound represented by the following general formula (3): (In formula (3), R １１ represents an alkyl group, an alkenyl group, or an aryl group having 6 to 22 carbon atoms. ３ is an alkylene group having 2 to 4 carbon atoms. n represents the number of moles of oxyalkylene groups added and is an integer of 0 to 20. a and b are each 1 or 2, and are integers that satisfy a+b=3.

6. The scouring agent composition according to any one of claims 1 to 5, wherein a weight ratio of the amphoteric surfactant (A) to the Bronsted acid compound (B) (amphoteric surfactant (A) / Bronsted acid compound (B)) is 95 / 5 to 5 / 95.

7. The scouring agent composition according to any one of claims 1 to 6, which is for polyurethane fibers or for composite fibers composed of polyurethane fibers and fibers other than polyurethane fibers.

8. A method for producing a refined fiber, comprising a step of scouring raw fiber containing a silicone component in a bath containing the scouring agent composition according to any one of claims 1 to 7.

9. A method for scouring fibers, comprising scouring raw fibers containing a silicone component in a bath containing the scouring agent composition according to any one of claims 1 to 7.

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