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

Abstract

Provided are a scouring agent composition which has little inhibition of adhesion of dye to fibers during dyeing and does not require pH adjustment during dyeing, a method for producing scouring fibers, and a method for scouring fibers. 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 the compound represented by general formula (1) in claim 1 and the 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 mgKOH / g.

Description

[Technical field]

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

[0002] In recent years, chemicals containing silicone components have been used in various processes such as spinning and weaving of fibers. Silicone components are generally highly lipophilic. Therefore, a scouring process is required to remove the silicone components from the raw fiber prior to dyeing the fiber to which the silicone components are attached. A representative example of the fiber containing silicone components is a composite fiber in which a polyurethane fiber having high elasticity is covered 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 releasability and prevent embrittlement. Therefore, the silicone components contained in the polyurethane fibers gradually leak out and adhere to the other synthetic fibers that cover the polyurethane fibers, resulting in the above-mentioned composite fiber containing silicone components.

[0003] Conventionally, a scouring process has been carried out on this composite fiber. However, conventional scouring agents designed with a nonionic surfactant as the main component are insufficient in degreasing the composite fiber containing the silicone component. In addition, since the silicone component has poor dispersibility in the bath, the silicone component is reattached to the composite fiber, and the residual grease amount is often increased compared to unscouring the grey fabric. The nonionic surfactant described in Reference 1 does not provide sufficient scouring performance. To improve scouring performance, scouring agents containing amphoteric surfactants described in References 2 and 3 have been developed. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2000-080562 A [Patent Document 2] JP 2008-248449 A [Patent Document 3] JP 2014-037653 A Summary of the Invention [Problem to be solved by the invention]

[0005] Scouring agents containing the above-mentioned amphoteric surfactants still have problems with dyeing defects, possibly due to insufficient scouring properties. Furthermore, the amphoteric surfactants in the scouring agent composition cause inhibition of the adhesion of dyes to fibers, resulting in problems with dyeing defects. Therefore, the object of the present invention is to provide a scouring agent composition which has little inhibition of adhesion of dye to fibers during dyeing and does not require pH adjustment during dyeing, a method for producing scouring agent fibers, and a method for scouring fibers. [Means for solving the problem]

[0006] As a result of intensive research by the inventors to solve the above-mentioned problems, it was found that the above-mentioned problems can be solved by a scouring agent composition comprising an amphoteric surfactant (A) and a Bronsted acid compound (B), wherein the acid value (AV) of the non-volatile matter 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) contains at least one selected from the compound represented by the following general formula (1) and the 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 mgKOH / g. [ka] (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 5R is an organic group represented by the formula: 4 Y 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 anion (-OSO3 - ) or sulfonate anion (-SO3 - ) A 1 R 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). [ka] (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 7 to 22 carbon atoms, or -(A 2 O) n -R 10 R is an organic group represented by the formula: 9 Y 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 anion (-OSO3 - ) or sulfonate anion (-SO3 - ) A 2 R 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 a compound having a carboxyl group, an inorganic acid, a sulfonic acid compound, an acidic phosphoric acid ester, and a phosphonic acid compound. The compound having a carboxy group preferably includes an ether carboxylic acid compound. The acidic phosphate ester preferably includes a compound represented by the following general formula (3): [ka] (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 which satisfy 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 preferable for use with polyurethane fibers or with composite fibers composed of polyurethane fibers and fibers other than polyurethane fibers.

[0008] The method for producing the refined fiber of the present invention includes a step of scouring raw fiber containing a silicone component in a bath containing the above-mentioned scouring agent composition. In the fiber scouring method of the present invention, raw fiber containing a silicone component is subjected to a scouring treatment in a bath containing the above-mentioned scouring agent composition. Effect of the Invention

[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 impede the adhesion of dye to fibers during dyeing, and is less susceptible to penetration of the scouring agent into polyurethane fibers, thereby suppressing embrittlement of the polyurethane fibers. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[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 is a specific value. It will be described in detail 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 exhibits the properties of a cationic surfactant in the acidic range.

[0012] In general 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 It is an organic group represented by the following formula: A 1 R is an alkylene group having 2 to 4 carbon atoms, and 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 It is the number of repetitions of O (the number of moles of oxyalkylene groups added). n is preferably 1 to 30, and more preferably 1 to 20, in that there is little hindrance to the adhesion of the dye to the fiber during dyeing.

[0013] R is popular because it has little effect on 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 is preferably 8 to 22, more preferably 10 to 20, further preferably 12 to 20, and particularly preferably 14 to 18. R 2 and R 3 is preferably an alkyl group. 2 and R 3The number of carbon atoms is preferably 1 to 12, more preferably 1 to 10, further preferably 1 to 8, and particularly preferably 1 to 6.

[0014] R 4 R 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 further preferably 1 to 4. 4 As the alkyl group, an alkylene group is preferable.

[0015] Y 1- is a carboxylate anion (-COO - ), sulfate ester anion (-OSO3 - ) or sulfonate anion (-SO3 - Among these, Y is the most popular because it has less of an adverse effect on the adhesion of dyes to fibers during dyeing. 1- is preferably a carboxylate type anion, a sulfonate type anion, and more preferably a carboxylate type anion.

[0016] Examples of the amphoteric surfactant represented by the above general formula (1) include 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. alkylaminoacetic acid betaine amphoteric surfactants such as coconut oil alkyl dimethyl aminoacetic acid betaine and lauryl dihydroxyethyl aminoacetic 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, 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 from the viewpoint of less inhibition of adhesion of the dye to the fiber during dyeing, and lauryl dimethylaminoacetic acid betaine is more preferred.

[0113] More preferred are 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, and even more preferred are alkylaminoacetic acid betaine amphoteric surfactants such as stearyl dimethylaminoacetic acid betaine, oleyl dimethylaminoacetic acid betaine, and behenyl dimethylaminoacetic acid betaine.

[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 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 2 O) n -R 10 It is an organic group represented by the following formula: A 2R is an alkylene group having 2 to 4 carbon atoms, and preferably an alkylene group having 2 to 3 carbon atoms. 10 is a hydrogen atom or an alkyl group having 1 to 30 carbon atoms. n is an oxyalkylene group. 2 It is the number of repetitions of O (the number of moles of oxyalkylene groups added). n is preferably 1 to 30, and more preferably 1 to 20, in that there is little 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; amidosulfobetaine-type amphoteric surfactants such as dodecylaminomethyldimethylsulfopropyl betaine and octadecylaminomethyldimethylsulfopropyl betaine.

[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, the amphoteric surfactant used in the present invention can be a commercially available product.

[0022] [Brønsted 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 compounds having a carboxyl group, inorganic acids, sulfonic acid compounds, acidic phosphoric acid esters, and phosphonic acid compounds, since it causes less 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-methylpropanediic acid, 2-methylbutanediic acid, 2-methylpentanediic acid, 1,2-cyclohexanedicarboxylic acid, 2-butenediic acid (maleic acid, fumaric acid), 2-pentenediic acid, 2,4-hexadienedioic acid, 2-methyl-2-butenediic acid, 2-methyl-2-pentenediic acid, 2-methylidenebutanediic 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 contains an ether carboxylic acid compound, since this reduces the inhibition of 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). [ka]

[0027] (In the formula, R 12 represents an organic group, Z represents -O- or -CONH-, A 4 represents an oxyalkylene group having 2 to 4 carbon atoms, R 13represents 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 12 is 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, further 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 preferable, and an oxyethylene group is more preferable. t is a number from 1 to 50, preferably from 2 to 40, and more preferably from 3 to 30. The polyoxyalkylene group (A 4 O) t A 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 the oxyalkylene group added.

[0030] X is a hydrogen atom, an alkali metal atom, an ammonium group, or an organic amine group. Among these, a hydrogen atom is preferred from the viewpoint of suppressing inhibition of 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, and nitric acid. 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-myristylsulfonic acid, 1-pentadecanesulfonic acid, 1-cetyl sulfonic acid, 1-heptadecanesulfonic acid, 1-stearyl sulfonic acid, isooctylsulfonic acid, isodecanesulfonic acid, isoundecanesulfonic acid, isolaurylsulfonic acid, isotridecanesulfonic acid, isomisulfonic acid, and the like. Examples of such compounds include listyryl sulfonic acid, isopentadecane sulfonic acid, isocetyl sulfonic acid, isoheptadecanesulfonic acid, isostearyl sulfonic acid, alkyl (mixture of carbon atoms 13-17) sulfonic acid, diisobutyl sulfosuccinic acid, dioctyl sulfosuccinic acid, dinonyl sulfosuccinic acid, alkylbenzene 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). [ka] In formula (3), R 11 R represents an alkyl group, an alkenyl group, or an aryl group having 6 to 22 carbon atoms. R is a group that is less likely to impede the adhesion of the dye to the fiber during dyeing. 11 The number of carbon atoms is preferably 8 to 20, and more preferably 10 to 18. A 3 represents an alkylene group having 2 to 4 carbon atoms; A 3 O represents an oxyalkylene group. n represents the number of moles of oxyalkylene groups added, and is an integer of from 0 to 20. n is preferably from 2 to 18, and more preferably from 2 to 16, in that there is little hindrance to the adhesion of the dye to the fiber during dyeing. a and b are each an integer that is 1 or 2 and satisfies a+b=3.

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

[0034] Examples of acidic phosphates include, but are not limited to, 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, by reacting inorganic phosphoric acid such as phosphoric anhydride P2O5 with a compound having an alcoholic hydroxyl group in the molecule, such as an alcohol or an alkyl ether with polyoxyalkylene (hereinafter, sometimes simply referred to as raw material alcohol), in any molar ratio. The molar ratio of P2O5 to 1 mole of a compound such as a raw material alcohol is preferably 0.1 to 0.9, and more preferably 0.15 to 0.7.

[0036] When inorganic phosphoric acid such as P2O5 is reacted with a raw material alcohol, a mixture of an acidic phosphoric acid monoester and an acidic phosphoric acid diester can be obtained. In this case, the ratio of the obtained acidic phosphoric acid monoester and acidic phosphoric acid diester can be adjusted by adjusting the molar ratio of P2O5 to 1 mole of the raw material alcohol. As the acidic phosphoric acid ester, either the acidic phosphoric acid monoester or the acidic phosphoric acid diester may be used alone, but a mixture of the acidic phosphoric acid monoester and the acidic phosphoric acid diester is preferred. From the viewpoint of improving the solution stability, the molar ratio of the acidic phosphoric acid monoester and 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 may be selected from the group consisting of known methods. 31 This can be confirmed by PNMR methods.

[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 non-volatile 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, the scouring property is insufficient. The acid value (AV) of the non-volatile 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 any of pure water, distilled water, purified water, soft water, ion-exchanged water, tap water, etc. The proportion of the amphoteric surfactant (A) in the non-volatile content of the scouring agent composition is preferably 10 to 90% by weight, more preferably 15 to 85% by weight, and further preferably 20 to 80% by weight. The proportion of the Bronsted acid compound (B) in the non-volatile content of the scouring agent composition is preferably 5 to 90% by weight, more preferably 15 to 85% by weight, and further preferably 20 to 80% by weight. 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 further 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] The scouring agent composition of the present invention preferably further contains an organic solvent. The organic solvent is preferably a specific glycol and / or glycol ether. In this way, by using specific glycols and / or glycol ethers for the amphoteric surfactant (A) and the Bronsted acid (B), the solubility of the amphoteric surfactant (A) and the Bronsted 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 workability when using the scouring agent composition is excellent, and the scouring agent composition can be added uniformly to the bath. The specific glycols and / or glycol ethers may be used alone or in combination of two or more kinds.

[0043] Examples of the 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, 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 above-mentioned amphoteric surfactant is taken as 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 further preferably 15 to 70 parts by weight. Furthermore, the scouring agent composition of the present invention may contain an alcohol-based solvent such as methanol, ethanol, propanol, isopropyl alcohol, butanol, or 3-methoxy-3-methyl-1-butanol, within a range that does not impair the effects of the present invention.

[0046] In addition, the scouring agent composition of the present invention preferably further contains at least one component selected from urea, aromatic carboxylate, and aromatic sulfonate. 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 uniformly added to the bath.

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

[0048] Examples of the salt of aromatic sulfonic acid include alkali metal salts, alkaline earth metal salts, ammonium salts, ethanolamine salts, etc. Examples include 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, as components which can improve the solubility of the amphoteric surfactant and remarkably improve the stability of the scouring agent composition at low and high temperatures, 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 are preferred, 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, as long as the effects of the present invention are not impaired. Examples of other components include anionic surfactants, cationic surfactants, alkaline agents, chelating agents, fixing agents, and defoaming agents.

[0051] Examples of the chelating agent 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 a known method can be adopted. 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 necessary, and mixing uniformly.

[0053] [Method for producing refined fiber and method for refining fiber] The method for producing the refined 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 refined fiber refers to a fiber obtained by scouring raw fiber. The fiber scouring method of the present invention includes 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 thread, knitted fabric, woven fabric, cheese, skein, cloth, etc.

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

[0055] Examples of polyurethane fibers include those made of polyurethane or polyurethane urea, which are prepared by reacting polytetramethylene glycol (PTMG) or polyester diol with an organic diisocyanate, and then chain-extending the resulting material with 1,4-butanediol, ethylenediamine, propylenediamine, pentanediamine, etc. Polyurethane urea fibers can be produced, for example, by preparing PTMG having a molecular weight of 1000 to 3000 and diphenylmethane diisocyanate (MDI), reacting them in a solvent such as dimethylacetamide or dimethylformamide at a molar ratio of PTMG / MDI = 1 / 2 to 1 / 1.5, and chain-extending the resulting polyurethane urea polymer with diamines such as ethylenediamine and propanediamine, and spinning the resulting 20 to 40% solution by dry spinning at a spinning speed of 400 to 1200 m / min. There is no particular restriction on the applicable fineness of polyurethane fibers.

[0056] Polyester fibers refer to fibers made of polymers condensed by a reaction that forms an ester bond, such as polyethylene terephthalate (PET) fibers, polylactic acid (PLA) fibers, polytrimethylene terephthalate (PTT) fibers, polybutylene terephthalate (PBT) fibers, polypropylene terephthalate (PPT) fibers, polyethylene naphthalate (PEN) fibers, and polyarylate fibers.

[0057] The polyamide fiber means a fiber which 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 which forms an amide bond.

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

[0059] The refining process essentially includes a refining process, and optionally includes a preliminary washing process, a heat setting process, a hot water washing process, a water washing process, a drying process, etc., and refers to a series of processes in which these processes are continuously combined. In detail, the individual steps constituting the scouring process include a pre-cleaning step in which the fabric (raw fiber) is immersed in a treatment tank to remove any attached matter in advance, a scouring step 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 step for the purpose of preventing wrinkles in the fabric and lengthening the width, a hot water washing step and a cold water washing step in which the fabric is immersed in a treatment tank to remove any attached matter and chemicals attached to the fabric, and a drying step in which the fabric is dried. A known technique can be adopted as the specific method for each step. In the pre-cleaning process, chemicals such as penetrants, acids, and alkalis may be used. In the refining process, chemicals such as scouring agents, alkalis, and chelating agents may be used.

[0060] Examples of the step (scouring method) of scouring raw fibers using the scouring agent composition of the present invention include the following. The scouring process may be carried out by either a normal batch method or a continuous method using a scouring machine. In a batch-type scouring machine, the raw fiber (woven fabric) is immersed in an aqueous solution (scouring liquid) containing a scouring agent composition in a treatment bath, and after washing, the adhering components are thoroughly removed together with the scouring liquid by washing with hot water and / or water. There is no particular restriction on the bath ratio, but it is usually 1:3 to 1:50, preferably 1:5 to 1:30. This allows the adhering components to be removed together with the scouring liquid. Thereafter, the adhering components are thoroughly removed together with the scouring liquid by washing with hot water and / or water.

[0061] The temperature of the scouring treatment depends on the type of fiber, but is 20 to 140° C. In order to efficiently remove dirt, a high temperature is preferable, and 50 to 110° C. is preferable. In the batch method, 80° C. or higher is preferable.

[0062] The time for the refining process depends on the type and amount of attached components, 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 machine. If it exceeds 120 minutes, the workability is not good, so it is preferable to wash with hot water and / or water at the stage where the attached components are removed. After that, depending on the case, a dehydration process is performed, and the product is dried at 70 to 180°C for 30 seconds to 1 hour.

[0063] The total ratio of the amphoteric surfactant (A) and the Bronsted acid (B) used in the present invention in the treatment bath (scouring liquid) 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. In addition, 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 scoured fiber of the present invention includes a step of dyeing in a dyeing solution (dye bath) containing a dye. As a dyeing method, for example, a dye and water are mixed and stirred in a predetermined ratio, and a pH adjuster, a leveling agent, etc. are added as necessary to prepare a dyeing 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, and particularly preferably 0.2 to 30% by weight.

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

[0067] The present invention will be described in more detail below with reference to examples of the present invention, 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 material fiber consisting of a composite fiber of nylon fiber and polyurethane fiber (mass ratio 88 / 12, knitted fabric) was prepared. To obtain the scouring agent composition shown in Table 1, 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 prepare a scouring agent composition with a non-volatile content of 42 wt%. The acid value in the scouring agent composition was 24.9 mg KOH / g, the acid value in the non-volatile content was 59.3 mg KOH / g, the ratio (W / AV) of the weight ratio of the amphoteric surfactant to the acid value (AV) was 1.44, and the weight ratio (amphoteric surfactant (A) / Bronsted acid compound (B)) of the amphoteric surfactant (A) and the Bronsted acid compound (B) was 90 / 10. Next, the prepared scouring agent and water were placed in a dyeing pot for mini color (manufactured by Techam 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 2g / L. The raw fiber was placed in the scouring bath and treated with mini color. The bath ratio (raw fiber weight: scouring bath weight) was 1:20. The scouring bath was heated to 95°C and kept at 95°C for 30 minutes. After that, it was cooled and the scouring bath was discarded, and the obtained fiber was washed with hot water for 1 minute, washed with water, and dehydrated by a centrifuge to obtain a scouring fiber. Subsequently, Kayanol Milling Turquoise 3G (Nippon Kayaku Co., Ltd.) was dissolved in 30-35°C water as a dye and added to the dyeing pot for mini color, and the scouring fiber was placed in the dyeing bath. The dye concentration at that time was 1.0% by weight owf relative to the scouring fiber. The dyebath was heated to 95°C and kept at 95°C for 30 minutes. The dyebath was then cooled and discarded, and the dyed fibers were washed with hot water for 1 minute, washed with water, and dehydrated using a centrifuge. The dyed fibers were then dried at 90°C for 1 hour, and the degreasing property, dyeability, and embrittlement of the dyed fibers were evaluated by the following methods. The results are shown in Table 1.

[0068] <Degreasing> 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 percent extracted relative to the fiber. ◎: Less than 1.00 ○: 1.00 or more and less than 1.30 △: 1.30 or more and less than 1.60 ×:1.60 or higher

[0069] <Stainability> The dyeability of the dyed fibers was evaluated visually according to the following criteria. ◎: No inhibition of dye adhesion to the dye was observed on the dyed fiber, and dyeing was achieved uniformly. ○: After dyeing, there is a slight inhibition of the dye from adhering to the fiber, but the dyeing is almost uniform. △: After dyeing, the dye was not uniformly dyed due to the dye being blocked from adhering to the fiber in patches. ×: On the dyed fiber, the adhesion of the dye to the fiber is clearly inhibited, and the dyeing is not uniform.

[0070] <Embrittleness> The elongation of the dyed fibers was measured according to the JIS-L-1018 constant load method to evaluate the embrittlement of the fibers. The measurements were performed 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.). A test piece (length 10 cm, width 2 cm) was 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 elongation of the gray fabric (blank) was used as the standard, and the embrittlement of the fibers was evaluated by the following method. ○: The elongation of the dyed fiber is 90% or more of the elongation of the grey fabric. △: The elongation rate of the dyed fiber is more than 70% but less than 90% of the elongation rate of the grey fabric. ×: The elongation of the dyed fiber is 70% or less of the elongation of the grey 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 agents in Example 1 were changed as shown in Tables 1 to 4. The results are shown in Tables 1 to 4. In addition, the units in the scouring agent compositions in Tables 1 to 4 are parts by weight, and the units of acid value are mgKOH / g. Examples 5 to 12 and Comparative Examples 4 to 9 were carried out by changing the dye Kayanol Milling Turquoise 3G of 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 dimethylaminoacetate betaine R 1 =C 12 H 25 R 2 and R 3 =CH3R 4 =CH2Y 1- =-COO - Amphoteric surfactant A-2: Myristyl dimethylaminoacetate betaine R 1 =C 14 H 29 R 2 and R 3 =CH3R 4 =CH2Y 1- =-COO - Amphoteric surfactant A-3: Stearyl dimethylaminoacetate betaine R 1 =C 18 H 37 R 2 and R 3 =CH3R 4 =CH2Y1- =-COO - Amphoteric surfactant A-4: Myristylamidopropyl dimethylaminoacetic acid betaine R 6 =C 13 H 27 R 7 and R 8 =CH3R 9 =CH2Y 2- =-COO - Amphoteric surfactant A-5: Coconut oil fatty acid amidopropyl dimethylaminoacetic acid betaine R 6 = Residue of coconut fatty acid after removing the carboxyl group, R 7 and R 8 =CH3R 9 =CH2Y 2- =-COO -

[0073] <Bronsted acid compound (B)> Bronsted acid compound B-1: Lactic acid, acid value 623 mg KOH / g Bronsted acid compound B-2: Dodecyl ether acetic acid with 4.5 moles of oxyethylene groups added, acid value 112 mg KOH / g Bronsted acid compound B-3: Dodecyl ether acetic acid with 10 moles of oxyethylene groups added, acid value 88 mg KOH / g Bronsted acid compound B-4: In a reaction vessel under a nitrogen stream, 884 parts of an alkyl ether having 12 to 14 carbon atoms (theoretical molecular weight 332, assuming 13 carbon atoms) to which 3 moles of polyoxyethylene have been added was charged and the temperature was adjusted to about 65°C under stirring. Next, 116 parts of phosphoric anhydride P2O5 (theoretical molecular weight 142) was added under stirring, and the esterification reaction was carried out at about 80°C for 2 hours to obtain a Bronsted acid compound B-4 containing unreacted polyoxyethylene alkyl ether and polyoxyethylene alkyl phosphate. The acid value of the Bronsted acid compound B-4 was 132 mgKOH / g, and the molar equivalent of phosphoric anhydride to 1 mole of polyoxyethylene alkyl ether was 0.615. The weight ratio of polyoxyethylene alkyl phosphate in the Bronsted acid compound B-4 was 86.7 wt% by anion exchange chromatography. Bronsted acid compound B-5: In a reaction vessel under a nitrogen stream, 958 parts of an alkyl ether (theoretical molecular weight 538) having 12 carbon atoms to which 8 moles of polyoxyethylene have been added was charged and the temperature was adjusted to about 65°C under stirring. Next, 42 parts of phosphoric anhydride P2O5 (theoretical molecular weight 142) was added under stirring, and the esterification reaction was carried out at about 80°C for 2 hours to obtain a Bronsted acid compound B-5 containing unreacted polyoxyethylene alkyl ether and polyoxyethylene alkyl phosphate. The acid value of the Bronsted acid compound B-5 was 50.4 mg KOH / g, and the molar equivalent of phosphoric anhydride to 1 mole of polyoxyethylene alkyl ether was 0.332. The weight ratio of polyoxyethylene alkyl phosphate in the Bronsted acid compound B-5 was 46.7 wt% by anion exchange chromatography. Bronsted acid compound B-6: In a reaction vessel under a nitrogen stream, 976 parts of an alkyl ether having 11 to 15 carbon atoms (theoretical molecular weight 728, assuming carbon number 13) to which 12 moles of polyoxyethylene have been added was charged and the temperature was adjusted to about 65°C under stirring. Next, 24 parts of phosphoric anhydride P2O5 (theoretical molecular weight 142) was added under stirring, and an esterification reaction was carried out at about 80°C for 2 hours to obtain a Bronsted acid compound B-6 containing unreacted polyoxyethylene alkyl ether and polyoxyethylene alkyl phosphate. The acid value of the Bronsted acid compound B-6 was 28 mgKOH / g, and the molar equivalent of phosphoric anhydride to 1 mole of polyoxyethylene alkyl ether was 0.256. The weight ratio of polyoxyethylene alkyl phosphate in the Bronsted acid compound B-6 was 32.9 wt% by anion exchange chromatography.

[0074] <Other Ingredient C> Other component C-1: Alkyl ether having 12 to 14 carbon atoms to which 9 moles of oxyethylene groups have been added Other component C-2: Alkyl ether with 18 carbon atoms and 15 moles of oxyethylene groups added Other ingredient C-3: Sodium xylene sulfonate Other ingredient 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] [Table 1]

[0077] [Table 2]

[0078] [Table 3]

[0079] [Table 4]

[0080] As can be seen from Tables 1 and 2, the scouring agent compositions of the present invention in Examples 1 to 12 are scouring agent compositions containing an amphoteric surfactant (A) and a Bronsted acid compound (B), wherein the amphoteric surfactant (A) contains at least one selected from the compounds represented by the following general formula (1) and the compounds 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, 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 a Brønsted acid compound (B) (Comparative Examples 1 to 3), when they do not contain an amphoteric surfactant (A) (Comparative Examples 4 and 5), or when the acid value (AV) of the non-volatile matter of the scouring agent composition is not in 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): The scouring agent composition has an acid value (AV) of 18 to 120 mg KOH / g of the nonvolatile content. 【Chemical 1】 (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. １ is the number of repeating O (the number of moles of oxyalkylene groups added). 【Chemistry 2】 (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 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 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).

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, wherein the Bronsted acid compound (B) is 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.

4. The scouring agent composition according to claim 3, wherein the compound having a carboxyl group comprises 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): 【Chemistry 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 the relationship a+b=3.

6. 2. The scouring agent composition according to claim 1, wherein the 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. 2. The scouring agent composition according to claim 1, 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.

Images