Liquid detergent composition for fibrous products

Abstract

To enhance a color-fading prevention effect on washed articles in a liquid detergent composition for fibrous products.SOLUTION: A liquid detergent composition for fibrous products comprises a polymer (A) having a specific repeating unit, a polymer (B) having a specific repeating unit, and a surfactant (C) excluding soap, wherein the content of the surfactant (C) is 35 mass% or more relative to a total mass of the liquid detergent composition for fibrous products, and the liquid detergent composition optionally comprises an anionic polymer (D) (excluding the polymer (A) and the polymer (B)), and the mass ratio represented by [the anionic polymer (D)] / [the polymer (A)] is 0.8 or less.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a liquid detergent composition for textiles. [Background technology]

[0002] One method for cleaning (washing) textile products such as clothing involves dispersing a liquid detergent composition for textile products (hereinafter sometimes simply referred to as "liquid detergent composition") in water to prepare a cleaning liquid, and applying mechanical force (for example, agitation by a washing machine) to the textile product to be washed while immersing the textile product in the cleaning liquid.

[0003] When colored and patterned items are washed repeatedly, the color tone of the items gradually deteriorates (fades). To address these issues, a liquid detergent composition containing a specific nonionic surfactant and a cationic polymer of a specific molecular weight has been proposed (Patent Document 1). According to the invention of Patent Document 1, the fading of the washed items is prevented by suppressing the release of dyes from the washed items. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Special Publication No. 2023-548360 Summary of the Invention [Problem to be solved by the invention]

[0005] However, liquid detergent compositions are required to have improved effects of preventing discoloration of items to be washed. Therefore, an object of the present invention is to provide a liquid detergent composition for textile products that can further enhance the effect of preventing discoloration of items to be washed. [Means for solving the problem]

[0006] The present inventors analyzed the causes of discoloration of items to be washed and obtained the following findings. During washing, friction occurs between the items being washed, or between the items and water (cleaning solution, etc.). When the items are repeatedly washed, the frictional force applied to the items causes the fibers to fibrillate. The fibrillated fibers turn white, damaging the color of the items being washed. By imparting friction resistance to the items being washed, it is possible to prevent the items from fading. The present invention has been made based on the above findings and has the following aspects.

[0007] <1> A polymer (A) having at least one repeating unit selected from the group consisting of a repeating unit (a1) represented by the following formula (a-1), a repeating unit (a2) represented by the following formula (a-2), and a repeating unit (a3) ​​represented by the following formula (a-3), a polymer (B) having at least one repeating unit (b1) selected from the group consisting of alkylene terephthalate units (b11) and alkylene isophthalate units (b12), and at least one repeating unit (b2) selected from the group consisting of oxyalkylene units (b21) and polyoxyalkylene units (b22); a surfactant (C) other than soap; A liquid detergent composition for textiles, comprising: The content of the surfactant (C) is 35% by mass or more based on the total mass of the liquid detergent composition for textile products, optionally containing an anionic polymer (D) (excluding the polymer (A) and the polymer (B)); the mass ratio represented by [the anionic polymer (D)] / [the polymer (A)] is 0.8 or less; A liquid detergent composition for textiles. [ka] [In formula (a-1), R 1 , R 2 are each independently an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group having 1 to 3 carbon atoms, and X - is the counterion.]

[0008] [ka]

[0009] [In formula (a-2), R 3 , R 4 are each independently an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group having 1 to 3 carbon atoms, and X - is the counterion.]

[0010] [ka]

[0011] [In formula (a-3), R 31 , R 32 , R 33 are each independently an alkyl group having 1 to 3 carbon atoms, and R 34 is an alkylene group having 1 to 5 carbon atoms, and R 35 is a hydrogen atom or a methyl group. - is the counter ion. <2> the surfactant (C) includes a nonionic surfactant (c1) and an anionic surfactant (c2), the mass ratio represented by [the component (c1)] / [the component (c2)] is 1 to 7.5; <1> A liquid detergent composition for textile products according to claim 1. <3> Further, the alkanolamine (E) <1> or <2> A liquid detergent composition for textile products according to claim 1. [Effects of the Invention]

[0012] The liquid detergent composition for textile products of the present invention can further enhance the effect of preventing discoloration of items to be washed. DETAILED DESCRIPTION OF THE INVENTION

[0013] (Liquid detergent composition for textile products) The liquid detergent composition for textile products of the present invention (hereinafter sometimes simply referred to as "liquid detergent composition") contains the following components (A) to (C):

[0014] <Component (A)> Component (A) is a polymer having at least one repeating unit selected from the group consisting of repeating units (a1), (a2), and (a3). By containing component (A), the liquid detergent composition of the present invention enhances the abrasion resistance of the items to be washed against each other and suppresses discoloration of the items to be washed. Additionally, by containing component (A), the liquid detergent composition of the present invention enhances liquid stability (i.e., suppresses precipitation and separation).

[0015] The repeating unit (a1) is represented by the following formula (a-1).

[0016] [ka]

[0017] (a-1) In formula, R 1 , R 2 are each independently an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group having 1 to 3 carbon atoms, and X - is the counterion.

[0018] The repeating unit (a2) is represented by the following formula (a-2).

[0019] [ka]

[0020] (a-2) In formula, R 3 , R 4 are each independently an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group having 1 to 3 carbon atoms, and X - is the counterion.

[0021] The repeating unit (a3) ​​is represented by the following formula (a-3).

[0022] [ka]

[0023] (a-3) In formula, R 31 , R 32 , R 33 are each independently an alkyl group having 1 to 3 carbon atoms, and R 34 is an alkylene group having 1 to 5 carbon atoms, and R 35 is a hydrogen atom or a methyl group. - is the counter ion.

[0024] Examples of the component (A) include a polymer (A1) containing at least one selected from the group consisting of repeating units (a1) and repeating units (a2), and a polymer (A2) containing repeating units (a3).

[0025] <Polymer (A1)> The polymer (A1) (component (A1)) is a polymer containing at least one repeating unit selected from the group consisting of repeating units (a1) and repeating units (a2). The component (A1) may have either the repeating unit (a1) or the repeating unit (a2).

[0026] The component (A) preferably further contains a repeating unit (a11) represented by the following formula (a-11):

[0027] [ka]

[0028] [In formula (a-11), R 5 is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and R 6 , R 7 are each independently a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or a hydroxyalkyl group having 1 to 3 carbon atoms.]

[0029] The repeating unit (a1) and the repeating unit (a2) are repeating units derived from a dialkyldiallylammonium salt monomer represented by the following formula (a-12).

[0030] [ka]

[0031] (a-12) In formula, R 8 , R 9 are each independently an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group having 1 to 3 carbon atoms, and X - is the counterion.

[0032] X in the above formulas (a-1), (a-2) and (a-12) - Examples of the cations include halide ions such as chloride ions and bromide ions; inorganic acid ions such as sulfate ions, nitrate ions and sulfite ions; and organic acid ions such as methyl sulfate ions, acetate ions and lactate ions. - As the cation, chloride ion, bromide ion, iodide ion, methyl sulfate ion, or ethyl sulfate ion is preferred.

[0033] The mass average molecular weight of the component (A1) is preferably 1,000 to 5,000,000, more preferably 3,000 to 2,000,000, and even more preferably 10,000 to 2,000,000. In this specification, the mass average molecular weight refers to the value determined by gel permeation chromatography (GPC) using polyethylene glycol as the standard substance.

[0034] The polymerization form of the component (A1) is not particularly limited, and may be any of block polymerization, random polymerization, and graft polymerization. The ratio of the total content of repeating units (a1) and (a2) to the content of repeating units (a11) in component (A1) is not particularly limited. The ratio of the total content of repeating units (a1) and (a2) to the content of repeating units (a11) in molar ratio ((a1+a2):a11) is preferably 10:90 to 80:20, and more preferably 20:80 to 60:40.

[0035] The component (A1) may be a polymer derived from diallyldimethylammonium chloride (DADMAC). Commercially available products of the polymer include, for example, "Marcoat 100" manufactured by Lubrizol.

[0036] Examples of polymers having at least one repeating unit selected from the group consisting of repeating units (a1) and repeating units (a2) and repeating units (a11) include diallyldimethylammonium chloride-acrylamide copolymers and diallyldimethylammonium chloride-acrylamide-acrylic acid terpolymers. These polymers may be synthetic products or commercially available products.

[0037] The polymer having at least one repeating unit selected from the group consisting of the repeating unit (a1) and the repeating unit (a2) and the repeating unit (a11) can be produced by, but not limited to, conventional radical polymerization. For example, the polymer can be produced by polymerizing monomers constituting the component (A1), such as diallyldimethylammonium chloride or acrylamide, using a polymerization method such as bulk polymerization, solution polymerization, emulsion polymerization, or suspension polymerization. Furthermore, during polymerization, it is preferable to use a polymerization initiator used in conventional radical polymerization. For example, peroxides such as benzoyl peroxide and potassium persulfate; or azo compounds such as azobisisobutyronitrile and azobiscyanovaleric acid can be used.

[0038] Commercially available diallyldimethylammonium chloride homopolymers include, for example, products under the trade names "Noverite 310" and "Marcote 100" manufactured by Lubrizol. Commercially available diallyldimethylammonium chloride-acrylamide copolymers include, for example, Lubrizol products under the trade names "Marquart 550," "Marquart 740," "Marquart 2200," "Noverite 300," "Noverite 301," "Noverite 302," and "Noverite 303." Commercially available diallyldimethylammonium chloride-acrylamide-acrylic acid terpolymers include, for example, trade names "Marcoat 3330" and "Marcoat 3940" manufactured by Lubrizol.

[0039] Polymer (A2) The polymer (A2) (component (A2)) is a polymer containing the repeating unit (a3).

[0040] Y in the above formula (a-3) - Examples of the cations include halide ions such as chloride ions and bromide ions; inorganic acid ions such as sulfate ions, nitrate ions and sulfite ions; and organic acid ions such as methyl sulfate ions, acetate ions and lactate ions. - As the cation, chloride ion, bromide ion, iodide ion, methyl sulfate ion, or ethyl sulfate ion is preferred.

[0041] Examples of the component (A2) include polymers having trimethylaminopropylacrylamide chloride (AAPTAC) and 3-(methacrylamido)propyltrimethylammonium chloride (MAPTAC) as repeating units. MAPTAC is preferred as the component (A2).

[0042] Commercially available products having the MAPTAC structure include, for example, "Noverite 304" and "Noverite 305".

[0043] Component (A) may contain repeating units (optional repeating units) other than the above-mentioned repeating units. Examples of optional repeating units include repeating units derived from acrylamide, repeating units derived from methyl acrylate, and repeating units derived from acrylic acid.

[0044] The zeta potential of component (A) at pH 7.0 is preferably −10 to 100, more preferably 0 to 100. When the zeta potential of component (A) is equal to or greater than the lower limit, cationic groups are present in the washing liquid, and the action of these cationic groups further enhances the abrasion resistance of the washed items against friction between each other. The zeta potential is a value measured using a ZETASIZER NANO-ZS (manufactured by Malvern Panalytical Co., Ltd.) For measurement, the measurement target is diluted to 1 to 5 mass %, adjusted to pH 7, and used as the measurement sample.

[0045] The mass average molecular weight of component (A) is 1.0 × 10 2 ~5.0×10 6 is preferred, and 1.0 × 10 2 ~5.0×10 5 is more preferred. The mass average molecular weight of the component (A) is a value measured by GPC (gel permeation chromatography).

[0046] The above-mentioned component (A) may be used alone or in combination of two or more.

[0047] The content of component (A) is preferably 0.1 to 5 mass%, more preferably 0.3 to 3 mass%, and even more preferably 0.5 to 2 mass%, based on the total mass of the liquid detergent composition. When the content of component (A) is equal to or greater than the above-mentioned lower limit, the anti-fading effect can be further enhanced. When the content of component (A) is equal to or less than the above-mentioned upper limit, dye migration or redeposition can be further reduced.

[0048] <(B) component> Component (B) is a polymer having repeating units (b1) and (b2). Component (B) is a so-called soil release polymer (SR). By containing component (B), the liquid detergent composition of the present invention increases the abrasion resistance of the washed item against friction between the washed item and water, thereby suppressing fading of the washed item. In addition, the liquid detergent composition of the present invention can prevent dirt in the cleaning liquid from redepositing on the washed item.

[0049] The repeating unit (b1) is at least one repeating unit selected from the group consisting of alkylene terephthalate units (b11) and alkylene isophthalate units (b12).

[0050] The alkylene terephthalate unit (b11) is a repeating unit (b11) represented by the following formula (b-11).

[0051] [ka] [In formula (b-11), R 21 is a lower alkylene group.

[0052] R 21 The number of carbon atoms is preferably 1 to 4, and more preferably 2 to 4. Examples of the repeating unit (b11) include an ethylene terephthalate unit, an n-propylene terephthalate unit, an isopropylene terephthalate unit, an n-butylene terephthalate unit, an isobutylene terephthalate unit, a sec-butylene terephthalate unit, a tert-butylene terephthalate unit, etc. Among these, an isopropylene terephthalate unit is preferred. The repeating unit (b11) may be one type alone or a combination of two or more types.

[0053] The alkylene isophthalate unit (b12) is a repeating unit (b12) represented by the following formula (b-12).

[0054] [ka] [In the formula, R 22 is a lower alkylene group.

[0055] R 22 The number of carbon atoms is preferably 1 to 4, and more preferably 2 to 4. Examples of the repeating unit (b12) include an ethylene isophthalate unit, a propylene isophthalate unit, an n-butylene isophthalate unit, a sec-butylene isophthalate unit, a tert-butylene isophthalate unit, etc. Among these, a propylene isophthalate unit is preferred. The repeating unit (b12) may be one type alone or a combination of two or more types.

[0056] The repeating unit (b1) may be either one of the repeating unit (b11) and the repeating unit (b12) alone or a combination of two or more thereof. That is, the repeating unit (b1) may consist solely of the repeating unit (b11), may consist solely of the repeating unit (b12), or may consist of a mixture of the repeating unit (b11) and the repeating unit (b12).

[0057] The repeating unit (b2) is at least one repeating unit selected from the group consisting of an oxyalkylene unit (b21) and a polyoxyalkylene unit (b22).

[0058] The repeating unit (b2) is a repeating unit represented by the following formula (b-2).

[0059] -(R 23 O) s - (b-2) [In formula (b-2), R 23 is a lower alkylene group, and s is a number from 1 to 100.

[0060] R 23 The number of carbon atoms is preferably 1 to 4, and more preferably 2 to 4. In formula (b-2), when s is 1, the unit is an oxyalkylene unit, and when s is 2 or more, the unit is a polyoxyalkylene unit. s is preferably 1-100, more preferably 1-80, and even more preferably 1-50.

[0061] Examples of the repeating unit (b2) include an oxyethylene unit and a polyoxyethylene unit; an oxypropylene unit and a polyoxypropylene unit; and a polyoxyethylene polyoxypropylene unit, with the oxyethylene unit and a polyoxyethylene unit being preferred.

[0062] The repeating unit (b2) may be one type alone or a combination of two or more types. That is, the (b2) unit may consist solely of the repeating unit (b21), or may consist solely of the repeating unit (b22), or may consist of a mixture of the repeating unit (b21) and the repeating unit (b22).

[0063] The component (B) is preferably a polymer compound in which the repeating units (b1) and (b2) are polymerized randomly or in blocks, and particularly preferably in blocks. The component (B) may contain units other than the repeating unit (b1) and the repeating unit (b2) (for example, units derived from a polymerization initiator or a polymerization terminator, or other copolymerizable units). In such cases, it is preferable that 80 mol % or more, preferably 90 mol % or more of the component (B) is composed of the repeating unit (b1) or the repeating unit (b2).

[0064] The component (B) is preferably a water-soluble polymer. "Water-soluble" for component (B) means that 10 g of the polymer is completely dissolved when added to 1,000 g of water at 40°C and stirred (200 rpm) for 12 hours with a stirrer (8 mm diameter, 50 mm length, 1 liter beaker).

[0065] Specific examples of the component (B) that are suitable include a compound represented by the following formula (B1) (component (B1)) or a compound represented by the following formula (B2) (component (B2)).

[0066] [ka]

[0067] In formula (B1), A and B each independently represent a hydrogen atom or a methyl group, and preferably both represent a methyl group. (B1) In the formula, R 24 , R 25 and R 26 are each independently an alkylene group having 2 to 4 carbon atoms, preferably an alkylene group having 2 to 3 carbon atoms. In formula (B1), x1 is a number representing the number of repetitions, and is 0 to 10, preferably 0.5 to 5, and more preferably 0.5 to 2.5. In formula (B1), y1 is a number representing the number of repetitions, and is 1 to 100, preferably 1 to 80, more preferably 1 to 50, still more preferably 10 to 50, and particularly preferably 20 to 30. In formula (B1), z1 is a number representing the number of repetitions, and is 1 to 100, preferably 1 to 80, more preferably 1 to 50, still more preferably 10 to 50, and particularly preferably 20 to 30.

[0068] [ka]

[0069] In formula (B2), A and B each independently represent a hydrogen atom or a methyl group, and preferably both represent a methyl group. (B2) where R 27 , R 28 and R 29 are each independently an alkylene group having 2 to 4 carbon atoms, preferably an alkylene group having 2 to 3 carbon atoms. In formula (B2), x2 is a number representing the number of repetitions and is from 0 to 10, preferably from 0.5 to 5, and more preferably from 0.5 to 2.5. In formula (B2), y2 is a number representing the number of repetitions, and is 1 to 100, preferably 1 to 80, more preferably 1 to 50, still more preferably 10 to 50, and particularly preferably 20 to 30. In formula (B2), z2 is a number representing the number of repetitions, and is preferably 1 to 100, more preferably 1 to 80, more preferably 10 to 50, still more preferably 10 to 50, and particularly preferably 20 to 30.

[0070] In the formula (B1), the ratio of x1 to y1 (x1:y1) is preferably from 1:5 to 1:20, and more preferably from 1:8 to 1:18. In the formula (B2), the ratio of x2 to y2 (x2:y2) is preferably from 1:5 to 1:20, and more preferably from 1:8 to 1:18.

[0071] The mass average molecular weight of component (B) is preferably 500 to 8000. The mass average molecular weight is a value measured by GPC (gel permeation chromatography) using THF (tetrahydrofuran) as a solvent and converted using PEG (polyethylene glycol) as a calibration curve. The lower limit of the mass average molecular weight is more preferably 800 or more, and even more preferably 1000 or more. The upper limit of the mass average molecular weight is more preferably 7000 or less, and even more preferably 6000 or less. Therefore, the mass average molecular weight is more preferably 800 to 7000, and even more preferably 1000 to 6000.

[0072] The pH of component (B) (5% aqueous solution at 20°C) is preferably 3 to 7. The melting point of component (B) is preferably 25°C to 60°C. The viscosity of component (B) (50°C) is preferably 100 to 1000 mPa·s, as measured using a Brookfield viscometer with a No. 2 rotor.

[0073] Component (B) is a known substance and is readily available commercially, and can be produced by synthesis methods disclosed in the literature (e.g., the methods described in Journal of Polymer Science, Vol. 3, pp. 609-630 (1948), Journal of Polymer Science, Vol. 8, pp. 1-22 (1951), and JP-A-61-218699).

[0074] Examples of component (B) include those commercially available under the trade names TexCare SRN-100 (manufactured by Clariant, mass average molecular weight: 2000 to 3000) and TexCare SRN-300 (manufactured by Clariant, mass average molecular weight: 7000). Of these, TexCare SRN-100 is preferred because it has high solubility in water and little deterioration in cleaning performance after storage. Particularly preferred is a 70% aqueous solution of TexCare SRN-100 commercially available under the trade name TexCare SRN-170 (manufactured by Clariant). These components (B) may be used alone or in combination of two or more.

[0075] The content of component (B) is preferably 0.1 to 5 mass%, more preferably 0.3 to 3 mass%, and even more preferably 0.5 to 2 mass%, based on the total mass of the liquid detergent composition. When the content of component (B) is equal to or greater than the above-mentioned lower limit, the friction resistance against friction between the item to be washed and water is further improved, and the anti-fading effect is further enhanced. When the content of component (B) is equal to or less than the above-mentioned upper limit, precipitation and phase separation can be prevented (i.e., the liquid stability can be further improved).

[0076] The total amount of components (A) and (B) (AB amount) is, for example, preferably 0.2 to 10 mass%, more preferably 0.6 to 6 mass%, and even more preferably 1 to 4 mass%, relative to the total mass of the liquid detergent composition. When the AB amount is equal to or greater than the above lower limit, the anti-fading effect can be further enhanced. When the AB amount is equal to or less than the above upper limit, the liquid stability can be further enhanced.

[0077] The mass ratio (B / A ratio) represented by [component (B)] / [component (A)] is, for example, preferably 0.02 to 50, more preferably 0.1 to 10, and even more preferably 0.25 to 4. When the B / A ratio is equal to or greater than the above lower limit, the anti-fading effect can be further improved. The B / A ratio is the mass ratio of the content of the component (B) to the content of the component (A).

[0078] <(C) component> Component (C) is a surfactant other than soap (a non-soap surfactant). By including component (C), the liquid detergent composition of the present invention exhibits excellent detergency. Soap is a higher fatty acid and its salt. "Higher fatty acid" refers to a saturated or unsaturated fatty acid having 8 to 24 carbon atoms, and preferably a saturated or unsaturated fatty acid having 8 to 22 carbon atoms. In other words, component (C) is a surfactant other than saturated or unsaturated fatty acids having 8 to 24 carbon atoms and their salts.

[0079] Examples of the component (C) include nonionic surfactants (component (C1)), anionic surfactants (component (C2)), cationic surfactants, amphoteric surfactants, and semi-polar surfactants. From the viewpoint of further enhancing detergency, the component (C) is preferably the component (C1) or the component (C2), and more preferably the component (C1) or a combination of the component (C1) and the component (C2).

[0080] ≪(C1) component≫ The component (C1) is a nonionic surfactant. By including the component (C1), the liquid detergent composition of the present invention can further improve liquid stability. Examples of component (C1) include polyoxyalkylene-type nonionic surfactants, Guerbet alcohol-type nonionic surfactants, alkylphenols, alkylene oxide adducts of fatty acids having 8 to 22 carbon atoms or amines having 8 to 22 carbon atoms, polyoxyethylene polyoxypropylene block copolymers, fatty acid alkanolamides, polyhydric alcohol fatty acid esters or alkylene oxide adducts thereof, alkylene oxide adducts of hydrogenated castor oil, sugar fatty acid esters, N-alkyl polyhydroxy fatty acid amides, and alkyl glycosides. The component (C1) may be one type alone, or a combination of two or more types.

[0081] As the component (C1), polyoxyalkylene-type nonionic surfactants and Guerbet alcohol-type nonionic surfactants are preferred. As the polyoxyalkylene type nonionic surfactant, a compound represented by the following formula (C11) (hereinafter also referred to as "component (C11)") and a compound represented by the following formula (C12) (hereinafter also referred to as "component (C12)") are more preferred, with component (C11) being even more preferred. As the Guerbet alcohol-type nonionic surfactant, a compound represented by the following formula (C13) (hereinafter also referred to as "component (C13)") is more preferred.

[0082] R 32 -O-[(EO) p1 / (A 1 O) q1 ]-(EO) r1 -R 33 ···(C11)

[0083] [(C11) where R 32 is a hydrocarbon group having 7 to 22 carbon atoms, and R 33 is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkenyl group having 2 to 6 carbon atoms; EO is an oxyethylene group; p1 is a number from 3 to 25 representing the average number of repetitions of EO; r1 is a number from 0 to 20 representing the average number of repetitions of EO; A 1O represents at least one of PO (oxypropylene group) and BO (oxybutylene group), and q1 represents A 1 It is a number between 0 and 20 that indicates the average number of repeating O's.

[0084] R 32 The hydrocarbon group has 7 to 22 carbon atoms, preferably 10 to 22, more preferably 10 to 20, still more preferably 10 to 18, and particularly preferably 12 to 18. 32 R may be linear or branched. 32 may be a straight-chain hydrocarbon group, or may be a group selected from a branched-chain primary hydrocarbon group and a straight-chain secondary hydrocarbon group. R 33 is preferably a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, more preferably a hydrogen atom.

[0085] R 32 When q1 is a linear hydrocarbon group, p1+r1 is preferably 3 to 30, more preferably 5 to 18, and even more preferably 7 to 15. Two or more different groups having different p1+r1 may be used in combination. When used in combination, it is preferable to combine one with a relatively small p1+r1 of 5 to 9 and one with a relatively large p1+r1 of 12 to 18. q1 is preferably a number of 0 to 6, and more preferably 0 to 3. R 32 When R is a straight-chain hydrocarbon group, the abrasion resistance and anti-fading effect can be further improved. 32 is a straight-chain hydrocarbon group, which is presumably more effective in promoting the interaction between component (A) or (B) and component (C1) in the cleaning solution and improving the friction-reducing effect of component (A) or (B) than a branched-chain hydrocarbon group or a hydrocarbon group having an ester structure at the linking site such as (C12) described below. R 32 When is a group selected from a branched chain primary hydrocarbon group and a straight chain secondary hydrocarbon group, p1+r1 is preferably 3 to 10, and q1 is preferably 0. When r1 is 0, p1 is preferably 4 to 20, more preferably 5 to 16, and even more preferably 6 to 10. q1 is preferably 0 to 4, more preferably 0 to 2, and even more preferably 0. When r1 is 1 or more, p1 is preferably 4 to 16, more preferably 6 to 12, and further preferably 8 to 10. q1 is preferably 1 to 4, and more preferably 2 or 3. r1 is preferably 4 to 16, more preferably 6 to 12, and further preferably 8 to 10. If q1 is 1 or greater, then [(EO) p1 / (A 1 O) q1 In the formula (I), there is no particular limitation on the distribution (arrangement order) of EO and PO, EO and BO, or EO, ​​PO and BO, and they may be arranged in a block form or randomly. The average number of repetitions can be measured by gas chromatography or the like.

[0086] R 34 -X 1 -[(EO) p2 / (A 2 O) q2 ]-(EO) r2 -R 35 ···(C12)

[0087] [(C12), where R 34 is a hydrocarbon group having 7 to 22 carbon atoms, -X 1 - is -COO- or -CONH-, and R 35 is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkenyl group having 2 to 6 carbon atoms; EO is an oxyethylene group; p2 is a number of 3 to 25 indicating the average number of repetitions of EO; A 2 O represents at least one of PO (oxypropylene group) and BO (oxybutylene group), and q2 represents A 2 is a number between 0 and 6 indicating the average number of repeats of O, and r2 is a number between 0 and 20 indicating the average number of repeats of EO.

[0088] R 34 The hydrocarbon group has 7 to 22 carbon atoms, preferably 9 to 19 carbon atoms, and more preferably 11 to 17 carbon atoms. 34 R may be linear or branched. 34may be a straight-chain hydrocarbon group, or may be a group selected from a branched-chain primary hydrocarbon group and a straight-chain secondary hydrocarbon group. -X 1 As -, -COO- is preferred. R 35 is preferably a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, more preferably an alkyl group having 1 to 2 carbon atoms. When r2 is 0, p2 is preferably 6 to 22, more preferably 9 to 20, and even more preferably 12 to 18. q2 is preferably 0 to 4, more preferably 0 to 2, and even more preferably 0. When r2 is 1 or more, p2 is preferably 4 to 16, more preferably 6 to 12, and still more preferably 8 to 10. q2 is preferably 1 to 4, and more preferably 2 or 3. r2 is preferably 4 to 16, more preferably 6 to 12, and still more preferably 8 to 10. If q2 is 1 or greater, then [(EO) p2 / (A 2 O) q2 In the formula (I), there is no particular limitation on the distribution (arrangement order) of EO and PO, EO and BO, or EO, ​​PO and BO, and they may be arranged in a block form or randomly.

[0089] As the (C12) component, polyoxyethylene fatty acid alkyl ester is preferred. (As the C12 component, R 34 is an alkyl group having 11 carbon atoms and an alkyl group having 13 carbon atoms, -X 1 - is -COO-, and R 35 is a methyl group, p2=15, q2=0, and r2=0 (hereinafter, sometimes referred to as MEE).

[0090] R 36 -CHR 37 -CH2-O-(R 38 O) p3 -H (C13)

[0091] [(C13), where R 36 and R 37are each independently a chain monovalent hydrocarbon group, and R 36 and R 37 The total number of carbon atoms is 6 to 16, and R 38 is a hydrocarbon group having 1 to 4 carbon atoms, and p3 is R 38 The number is a number between 1 and 20 indicating the average number of repeats of O.

[0092] R 36 and R 37 are each independently a linear monovalent hydrocarbon group. 36 and R 37 The total number of carbon atoms is 6 to 16, preferably 6 to 14, more preferably 6 to 14, and even more preferably 6 to 10. R 36 and R 37 The chain-like monovalent hydrocarbon group in may be linear or branched. The chain-like monovalent hydrocarbon group may or may not have an unsaturated bond. The chain-like monovalent hydrocarbon group is preferably an alkyl group or an alkenyl group. R 36 The number of carbon atoms and R 37 If the number of carbon atoms is different from that of R 36 and R 37 The one having the fewer carbon atoms preferably has 2 to 7 carbon atoms, and the one having the greater carbon atom preferably has 4 to 14 carbon atoms.

[0093] R 36 -CHR 37 -CH2- is Guerbet alcohol (R 36 -CHR 37 It is a residue obtained by removing one hydroxyl group from R 36 -CHR 37 -CH2- is R 36 -CH(R 37 )-CH2-. Guerbet alcohol is an alcohol obtained by subjecting raw material alcohol to the Guerbet reaction. In the Guerbet reaction, two raw material alcohol molecules are condensed to form a dimer. For example, if the raw material alcohol is R 39 -CH2-CH2-OH (where R 39is a linear monovalent hydrocarbon group having 2 to 7 carbon atoms. 39 -CH2-CH2-CHR 39 Guerbet alcohol, represented by -CH2-OH, is obtained. The two molecules of raw alcohol that form Guerbet alcohol may be different. When the two molecules of raw alcohol are the same, R 36 The number of carbon atoms and R 37 The difference in the number of carbon atoms is 2. R 36 -CHR 37 Specific examples of -CH2- include a 2-ethylhexyl group and a 2-propylheptyl group.

[0094] p3 is 1 to 20, preferably 3 to 14, more preferably 4 to 12, and even more preferably 5 to 10. When p3 is at least the lower limit, the low-temperature stability is excellent. When p3 is at most the upper limit, the detergency is excellent.

[0095] R 38 is a hydrocarbon group having 1 to 4 carbon atoms. 38 is preferably an alkylene group having 1 to 4 carbon atoms, more preferably an alkylene group having 2 to 3 carbon atoms, and even more preferably an alkylene group having 2 carbon atoms. 38 O is preferably at least one of EO and PO, and more preferably EO.

[0096] (R 38 O) p3 EO and PO may be mixed in the above. When EO and PO are mixed, there is no particular limitation on their distribution (arrangement order), and they may be arranged in a block pattern or randomly.

[0097] Examples of the (C13) component include 2-ethylhexyl alcohol alkoxylates such as 2-ethylhexyl alcohol ethoxylate, and 2-propylheptyl alcohol alkoxylates such as 2-propylheptyl alcohol ethoxylate. Among these, 2-propylheptyl alcohol ethoxylate is preferred as the component (C13). In the component (C13), the average number of moles of ethylene oxide added is preferably 3 to 14, more preferably 4 to 12, and even more preferably 5 to 10.

[0098] The component (C13) may be a commercially available product, or may be produced by a known production method. For example, commercially available products of 2-ethylhexyl alcohol ethoxylate include "Newcol 1008" manufactured by Nippon Nyukazai Co., Ltd., and "Lutensol XP-100," "Lutensol XP-80," and "Lutensol XP-50" manufactured by BASF. An example of a method for producing the (C13) component is a method in which 1 to 20 moles of alkylene oxide are added to Guerbet alcohol having 8 to 18 carbon atoms. The Guerbet alcohol may be produced by subjecting the raw material alcohol described above to a Guerbet reaction, or a commercially available product may be used. For example, 2-propylheptyl alcohol can be obtained by subjecting pentanol to a Guerbet reaction.

[0099] The content of component (C1) is, for example, preferably 20 to 40 mass%, more preferably 30 to 35 mass%, based on the total mass of the liquid detergent composition. When the content of component (C1) is equal to or greater than the above-mentioned lower limit, the detergency and liquid stability can be further improved. When the content of component (C1) is equal to or less than the above-mentioned upper limit, the low-temperature stability can be further improved.

[0100] ≪(C2) component≫ Component (C2) is an anionic surfactant (excluding soap). By including component (C2), the liquid detergent composition of the present invention can further enhance its detergency.

[0101] Examples of component (C2) include carboxylic acid-type anionic surfactants such as linear alkylbenzenesulfonic acid or its salt (LAS), α-olefinsulfonic acid or its salt (AOS), linear or branched alkyl sulfate ester or its salt (AS), polyoxyalkylene alkyl ether sulfate ester or its salt (AES), polyoxyalkylene alkenyl ether sulfate ester or its salt, alkyl group-containing alkanesulfonic acid or its salt, α-sulfofatty acid ester or its salt (MES), internal olefinsulfonic acid or its salt (IOS), hydroxyalkanesulfonic acid or its salt, alkyl ether carboxylic acid or its salt, polyoxyalkylene ether carboxylic acid or its salt, alkylamide ether carboxylic acid or its salt, alkenylamide ether carboxylic acid or its salt, and acylaminocarboxylic acid or its salt; and phosphate ester-type anionic surfactants such as alkyl phosphate ester or its salt, polyoxyalkylene alkyl phosphate ester or its salt, polyoxyalkylene alkylphenyl phosphate ester or its salt, and glycerin fatty acid ester monophosphate ester or its salt. Examples of salt forms of component (C2) include alkali metal salts (sodium salt, potassium salt, etc.), alkaline earth metal salts (magnesium salt, etc.), and alkanolamine salts (monoethanolamine salt, diethanolamine salt, etc.). As the component (C2), LAS, AOS, AS, AES, and IOS are preferred, and LAS, AES, and IOS are more preferred. These components (C2) may be used alone or in combination of two or more.

[0102] The content of component (C2) is, for example, preferably 5 to 20 mass %, more preferably 10 to 15 mass %, based on the total mass of the liquid detergent composition. When the content of component (C2) is equal to or greater than the above lower limit, detergency can be further enhanced. When the content of component (C2) is equal to or less than the above upper limit, liquid stability can be further enhanced.

[0103] The sum of the contents of the (C1) component and the (C2) component (C1C2 amount) is, for example, preferably 30 to 70 mass %, more preferably 40 to 60 mass %, and even more preferably 40 to 50 mass %, based on the total mass of the (C) component. When the C1C2 amount is equal to or greater than the above lower limit, detergency can be further improved. When the C1C2 amount is equal to or less than the above upper limit, liquid stability can be further improved.

[0104] When component (C) contains both component (C1) and component (C2), the mass ratio (C1 / C2 ratio) represented by [component (C1)] / [component (C2)] is preferably 1 to 7.5, more preferably 1.5 to 5, and even more preferably 1.7 to 3.6. When the C1 / C2 ratio is at least the above lower limit, the anti-fading effect and liquid stability can be further enhanced. When the C1 / C2 ratio is at most the above upper limit, the liquid stability and detergency can be enhanced. The C1 / C2 ratio is the mass ratio of the content of the component (C1) to the content of the component (C2).

[0105] When component (C) contains component (C2), the mass ratio (A / C2 ratio) represented by [component (A)] / [component (C2)] is preferably 0.006 to 1, more preferably 0.017 to 0.43. When the A / C2 ratio is equal to or greater than the lower limit, the anti-fading effect can be further enhanced. When the A / C2 ratio is equal to or less than the upper limit, the anti-fading effect and solution stability can be enhanced.

[0106] The content of component (C) is preferably 35% by mass or more, more preferably 38 to 70% by mass, and even more preferably 40 to 60% by mass, based on the total mass of the liquid detergent composition. When the content of component (C) is equal to or greater than the above-mentioned lower limit, detergency can be further enhanced. When the content of component (C) is equal to or less than the above-mentioned upper limit, liquid stability can be further enhanced.

[0107] <(D) component> Component (D) is an anionic polymer (excluding components (A) and (B)). The liquid detergent composition of the present invention optionally contains component (D). That is, the liquid detergent composition may or may not contain component (D). Component (D) is used, for example, to adjust the viscosity of the liquid detergent composition.

[0108] Component (D) is a polymer having negatively charged structural units. Examples of the component (D) include polymers containing structural units derived from polycarboxylic acids, and anionic polysaccharides.

[0109] Examples of polymers containing structural units derived from polycarboxylic acids include polyacrylic acid and salts thereof, polymaleic acid and salts thereof, acrylic acid-maleic acid copolymers and salts thereof, and acrylic acid-methacrylic acid copolymers and salts thereof.

[0110] Examples of anionic polysaccharides include sodium carboxymethylcellulose.

[0111] When the liquid detergent composition contains component (D), the mass ratio (D / A ratio) of [component (D)] / [component (A)] is preferably greater than 0 and not greater than 0.8, more preferably greater than 0 and not greater than 0.7, and even more preferably greater than 0 and not greater than 0.6. That is, when considering a liquid detergent composition that does not contain component (D), the D / A ratio is preferably not greater than 0.8, more preferably not greater than 0.7, and even more preferably not greater than 0.6. When the D / A ratio is not greater than the above-mentioned upper limit, the positive charges of the repeating units (a1), (a2), or (a3) ​​contained in component (A) are not canceled out and can exert their function, thereby enhancing the anti-fading effect.

[0112] <(E) component> Component (E) is an alkanolamine. Component (E) is used as a pH adjuster. By using component (E) as a pH adjuster, the stability of the solution is improved, and the chlorine capturing effect prevents discoloration of the dyes on the washed items, further enhancing the anti-fading effect.

[0113] Examples of the component (E) include monoethanolamine, diethanolamine, triethanolamine, isopropanolamine, and 2-amino-2-methyl-1-propanol, with monoethanolamine being preferred.

[0114] The content of component (E) is preferably 0.5 to 4.5% by mass, more preferably 1 to 4% by mass, and even more preferably 1 to 3% by mass, based on the total mass of the liquid detergent composition. When the content of component (E) is equal to or greater than the above-mentioned lower limit, the liquid stability at low temperatures (e.g., 5°C or lower) can be improved. When the content of component (E) is equal to or less than the above-mentioned upper limit, discoloration (yellowing) of the liquid detergent composition over time can be prevented.

[0115] <Other ingredients> The liquid detergent composition may contain components (optional components) other than the components (A) to (E). Examples of optional components include water, water-miscible organic solvents, higher fatty acids or salts thereof, pH adjusters other than component (E), viscosity reducers and solubilizers, antibacterial agents, chelating agents, enzymes, structuring agents, thickeners other than structuring agents, preservatives, antioxidants, enzyme stabilizers, texture improvers, dye transfer inhibitors, dispersants, anti-redeposition agents other than component (A), fragrances, emulsifying agents, fluorescent agents, discoloration inhibitors, hydrotropes, bleaching agents, pearlizing agents, and extracts of natural products, etc. The optional components may be used alone or in combination of two or more.

[0116] The content of water is preferably 10 to 50% by mass based on the total mass of the liquid detergent composition.

[0117] A water-miscible organic solvent is an organic solvent that dissolves 25 g or more in 1 L of water at 25°C. Examples of water-miscible organic solvents include alcohols such as ethanol, glycerin, 1-propanol, 2-propanol, 1-butanol, and 3-methoxy-3-methyl-1-butanol (Solfit, trade name); glycols such as propylene glycol (PG), butylene glycol, and hexylene glycol; polyglycols such as diethylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol having a molecular weight of about 200 to 1000, and dipropylene glycol; and alkyl ethers such as diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether (butyl carbitol), and diethylene glycol dimethyl ether.

[0118] <Physical properties> The pH of the liquid detergent composition at 25°C is preferably 6 to 8, for example. The pH of the liquid detergent composition can be adjusted by the type and content of component (E) and, if necessary, by using other pH adjusters. The pH of the liquid detergent composition is a value measured at 25° C. using a pH meter (manufactured by DKK-TOA Corporation, product name "HM-30G"). The pH of the liquid detergent composition is adjusted by combining the amount of component (E) with the type and amount of a pH adjuster, such as sodium hydroxide, potassium hydroxide, hydrochloric acid, sulfuric acid, or paratoluenesulfonic acid.

[0119] The viscosity of the liquid detergent composition is preferably, for example, 30 to 300 mPa·s. The viscosity of the liquid detergent composition is a value measured with a Brookfield viscometer.

[0120] <Manufacturing method> The liquid detergent composition can be produced by a conventional method by mixing components (A) to (C) and, if necessary, other components, and adjusting the pH to the desired level using a pH adjuster.

[0121] <How to use> Examples of methods for using the liquid detergent composition (i.e., washing methods) include a method in which the liquid detergent composition is dispersed in water alone or together with a known bleach or fabric softener to form a cleaning liquid, and then the items to be washed are placed in this cleaning liquid and washed in a washing machine, and a method in which the cleaning liquid or liquid detergent composition is applied to the items to be washed and then washed in a washing machine. Examples of items to be washed include textile products such as clothing, fabrics, sheets, curtains, and carpets. The content of the liquid detergent composition in the cleaning liquid is not particularly limited. The amount of the liquid detergent composition added to water is, for example, 1.5 to 5 mL of the liquid detergent composition per 10 L of water.

[0122] The liquid detergent composition of the present invention contains components (A) and (B), and therefore enhances the friction resistance of the items being washed against friction between themselves and against friction between the items being washed and water (cleaning liquid), thereby preventing discoloration caused by fibrillation of the fibers of the items being washed. In addition, the liquid detergent composition has excellent detergency due to the inclusion of component (C). Furthermore, since the D / A ratio is within a specific range, the function of component (A) is prevented from being reduced, and the anti-fading effect is further enhanced. [Example]

[0123] The present invention will be described in detail below with reference to examples, but the present invention is not limited to the following description.

[0124] (Raw materials used) <Component (A)> A-1: Nov300, dimethyldiallylammonium-acrylamide copolymer (molar ratio of dimethyldiallylammonium to acrylamide 30:70, mass average molecular weight 1.6 million, zeta potential = 11 mV), trade name "Noverite300", manufactured by Lubrizol. A-2: Nov301, dimethyldiallylammonium-acrylic acid copolymer (molar ratio of dimethyldiallylammonium to acrylic acid 80:20, mass average molecular weight 500,000, zeta potential = 12 mV), trade name "Noverite301", manufactured by Lubrizol. A-3: Nov302, dimethyldiallylammonium-acrylamide copolymer (molar ratio of dimethyldiallylammonium to acrylamide 30:70, mass average molecular weight 120,000, zeta potential = 11 mV), trade name "Noverite302", manufactured by Lubrizol. A-4: Nov303 (zeta potential = -16mV), product name "Noverite303", manufactured by Lubrizol. A-5: Nov304 (zeta potential = 4 mV), trade name "Noverite304", manufactured by Lubrizol. A-6: Nov305 (zeta potential = 24 mV), product name "Noverite305", manufactured by Lubrizol. A-7: Nov310, a homopolymer of dimethyldiallylammonium (zeta potential = 11 mV), trade name "Noverite310", manufactured by Lubrizol.

[0125] <(B) component> B-1: SRN-170C, soil release polymer, trade name "TexCare SRN-170C", manufactured by Clariant Japan (70% by mass aqueous solution of Clariant's trade name "TexCare SRN-100").

[0126] <(C) component> ≪(C1) component≫ C1-1: AE7, polyoxyethylene alkyl (carbon number 12 to 14) ether (average number of added moles of ethylene oxide: 7), obtained by adding 7 moles of ethylene oxide to natural alcohol (manufactured by Procter & Gamble, trade name "CO-1214"). In the formula (C11), R 32 is at least one linear alkyl group selected from alkyl groups having 12 carbon atoms and alkyl groups having 14 carbon atoms, and R 33 A compound in which is a hydrogen atom, p1 is 7, q1 is 0, and r1 is 0. ·C1-2: AE15, polyoxyethylene alkyl (C12 - C14) ether (average number of moles of ethylene oxide added: 15), obtained by adding 15 moles of ethylene oxide to natural alcohol (manufactured by Procter & Gamble, trade name "CO - 1214"). (C11) In the formula, R 32 is one or more linear alkyl groups selected from an alkyl group having 12 carbon atoms and an alkyl group having 14 carbon atoms, R 33 is a hydrogen atom, p1 is 15, q1 is 0, and r is 0. ·C1-3: MEE, C 11 H 23 CO(OCH2CH2) m OCH3 and C 13 H 27 CO(OCH2CH2) m OCH3, a mixture with a mass ratio of 8 / 2, m (average repeat number) = 15, narrow ratio 33% by mass, synthetic product. ≪Component (C2)≫ ·C2-1: LAS-H, linear alkylbenzene sulfonic acid (LAS) having 10 - 14 carbon atoms, trade name "Lipon (registered trademark) LH - 200", manufactured by Lion Corporation. ·C2-2: AES-1, polyoxyalkylene alkyl ether sulfate. Synthesized by the following synthesis method.

[0127] <Synthesis method of AES-1> Into an autoclave with a capacity of 4 L, 400 g of raw material alcohol (trade name "CO - 1270" manufactured by Procter & Gamble) and 0.8 g of potassium hydroxide catalyst as a reaction catalyst were charged. After replacing the inside of the autoclave with nitrogen, the temperature was raised while stirring. Next, while maintaining the temperature at 180 °C and the pressure at 0.3 MPa or less, 91 g of ethylene oxide (gaseous) was introduced and reacted to obtain an alcohol ethoxylate. Analysis was performed using a gas chromatograph: GC-5890 manufactured by Hewlett-Packard, a detector: flame ionization detector (FID), and a column: Ultra-1 (manufactured by HP, L25m × φ0.2mm × T0.11μm). As a result, the obtained alcohol ethoxylate had an average molar number of ethylene oxide addition of 1.0. In addition, the amount of the compound without ethylene oxide addition (which ultimately becomes component (b-0)) was 43% by mass based on the total amount of the obtained alcohol ethoxylate. Next, 237 g of the alcohol ethoxylate obtained above was placed in a 500 mL flask equipped with a stirrer, replaced with nitrogen, and then 96 g of liquid anhydrous sulfuric acid (sulfan) was slowly added dropwise while maintaining the reaction temperature at 40°C. After the addition was completed, stirring was continued for 1 hour (sulfation reaction) to obtain polyoxyethylene alkyl ether sulfate. Subsequently, this was neutralized with an aqueous sodium hydroxide solution to obtain AES-1.

[0128] · C2-3: IOS, sodium internal olefin sulfonate. The content of the hydroxy form is 85% by mass. Synthesized by the following synthesis method.

[0129] <Synthesis method of IOS> The internal olefin used was an internal olefin mixture containing 2.0 mass% of paraffin components, with a total ratio of double bonds at the 2-position of 26 mass%, a cis / trans mass ratio of 27 / 73, and 3 mass% of C14 or lower, 33 mass% of C15, 39 mass% of C16, 24 mass% of C17, and 1 mass% of C18 or higher. Using this internal olefin mixture, a sulfonation reaction was carried out in a conventional manner using a glass thin-film sulfonation apparatus with an inner diameter of 6 mm and a length of 1.2 m, using nitrogen-diluted SO3 gas (SO3 concentration: 5% by volume) at a reactor temperature of 10°C and a molar ratio of SO3 / internal olefin of 1.1, to obtain internal olefin sulfonic acid. The resulting reaction product, internal olefin sulfonic acid, was aged at 5°C for 1 hour, and then 1.11 times the molar amount (relative to the internal olefin sulfonic acid) of 15% aqueous sodium hydroxide was added and the mixture was stirred at 30°C for 30 minutes to carry out a neutralization reaction, yielding a neutralized product. This neutralized product was then heated in an autoclave at 160°C for 40 minutes for hydrolysis, yielding IOS.

[0130] <(D) component> D-1: A cross-linked copolymer synthesized from two or more monomers selected from the group consisting of alkyl acrylate, alkyl methacrylate, acrylic acid, and methacrylic acid, trade name "Carbopol Aqua30", manufactured by Lubrizol. D-2: Sodium salt of copolymer of olefin and maleic acid, mass average molecular weight 12,000, trade name "Sokalan CP9", manufactured by BASF. D-3: Sodium carboxymethylcellulose (CMC), product name "CMC Daicel", product number: 1190, manufactured by Daicel Chemical Industries, Ltd.

[0131] <(E) component> E-1: MEA, monoethanolamine (manufactured by MIWON Chemical Co., Ltd., trade name "Monoethanolamine").

[0132] <Optional ingredients> HP20: Ethylene oxide adduct of polyethyleneimine (manufactured by BASF, trade name "Sokalan HP20"). Dichrosan: 4,4'-dichloro-2-hydroxydiphenyl ether (manufactured by BASF, trade name "TINOSAN (registered trademark) HP100"). Citric acid: Product name: "Liquid Citric Acid", manufactured by Fuso Gaku Kogyo Co., Ltd. Ethanol: Product name: "Specific Alcohol 95% Synthetic", manufactured by Japan Alcohol Sales Co., Ltd. PEG1000: Polyethylene glycol (manufactured by Lion Corporation, product name "PEG#1000-L60", mass average molecular weight = 1000). Sodium lactate: Sodium lactate (manufactured by Musashino Chemical Laboratory Co., Ltd., product name "Sodium Lactate"). Palm fatty acids: Product name: "Palm Fatty Acids", manufactured by NOF Corporation. · Solfit: 3-Methoxy-3-methylbutanol (manufactured by Kuraray Co., Ltd., trade name "Solfit"). Enzymes: Multi-enzyme (Novozymes, trade name "Medley Core 210L", enzyme liquid preparation). Fragrance: Givaudan Japan Co., Ltd., product name "Aquatic Powdery". BHT: Dibutylhydroxytoluene (manufactured by Sumitomo Chemical Co., Ltd., trade name "SUMILZER BHT-R"). pH adjuster: sodium hydroxide solution or hydrochloric acid solution. Water: Ion-exchanged water.

[0133] (Evaluation method) <Abrasion resistance> Each liquid detergent composition was diluted with water to 333 ppm (by mass) to prepare a diluted solution, and the logarithmic decrement was measured using a rigid pendulum tester (RPT-3000) (jig: RBS040 / FRB300). The rate of change in the logarithmic decrement was calculated using the following formula (i) and evaluated according to the following criteria. The smaller the logarithmic decrement, the higher the abrasion resistance.

[0134] Rate of change in logarithmic decrement rate=(logarithmic decrement rate of diluted solution of liquid detergent composition / logarithmic decrement rate of diluted solution of Comparative Example 1) (i)

[0135] <Evaluation Criteria> ◎: The rate of change in logarithmic decrement is less than 0.85. ○: The rate of change in logarithmic decrement is 0.85 or more and less than 0.9. △: The rate of change in logarithmic decrement is 0.9 or more and less than 0.95. ×: The rate of change in logarithmic decrement is 0.95 or more.

[0136] <Anti-fading effect> Using a vertical washing machine, 100% cotton black cloth was washed on the standard cycle (water temperature: 15°C, bath ratio: 20 times) and air-dried 20 times (repeated washing treatment). The Z value of the evaluation cloth before and after the repeated washing treatment was measured using a color difference meter (manufactured by Nippon Denshoku Industries Co., Ltd., product name "SE7700 type"), and ΔZ was calculated using the following formula. The smaller ΔZ is considered to be the better the anti-fading effect. ΔZ = Z value after repeated washing - Z value before repeated washing

[0137] (Examples 1 to 19, Comparative Examples 1 to 5) According to the formulations shown in Tables 1A to 1F, components (A) to (C) and other components were added to water and mixed to prepare the liquid detergent compositions of each example. The liquid detergent composition of each example was evaluated for abrasion resistance and anti-fading effect, and the results are shown in the table. The amounts in the table are pure equivalents. Ingredients without a listed amount in the table are not included. In the table, the "appropriate amount" of pH adjuster is the amount required to adjust the liquid detergent composition to the pH shown in the table, and the "balance" amount of water is the amount required to make the liquid detergent composition 100% by mass.

[0138] [Table 1A]

[0139] [Table 1B]

[0140] [Table 1C]

[0141] [Table 1D]

[0142] [Table 1E]

[0143] [Table 1F]

[0144] As shown in Tables 1A to 1F, Examples 1 to 19 had a change rate of logarithmic decrement of 0.70 to 0.94 and a ΔZ of 0 to 0.2, demonstrating that Examples 1 to 19 had an excellent anti-fading effect. In Comparative Example 1, which did not contain the components (A) and (B), Comparative Example 2, which did not contain the component (A), Comparative Example 3, which did not contain the component (B), and Comparative Examples 4 and 5, which had D / A ratios of 1 to 4, the rate of change in logarithmic decrement rate was 0.95 to 1.00, and ΔZ was 0.27 or more. From the above results, it was confirmed that the application of the present invention can improve the effect of preventing fading of items to be washed.

Claims

1. a polymer (A) having at least one repeating unit selected from the group consisting of a repeating unit (a1) represented by the following formula (a-1), a repeating unit (a2) represented by the following formula (a-2), and a repeating unit (a3) ​​represented by the following formula (a-3); a polymer (B) having at least one repeating unit (b1) selected from the group consisting of alkylene terephthalate units (b11) and alkylene isophthalate units (b12), and at least one repeating unit (b2) selected from the group consisting of oxyalkylene units (b21) and polyoxyalkylene units (b22); a surfactant (C) other than soap; A liquid detergent composition for textiles, comprising: The content of the surfactant (C) is 35% by mass or more based on the total mass of the liquid detergent composition for textile products, optionally containing an anionic polymer (D) (excluding the polymer (A) and the polymer (B)); the mass ratio of [the anionic polymer (D)] / [the polymer (A)] is 0.8 or less; A liquid detergent composition for textiles. 【Chemistry 1】 [In formula (a-1), R １ , R ２ are each independently an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group having 1 to 3 carbon atoms, and X － is the counter ion. 【Chemistry 2】 [In formula (a-2), R ３ , R ４ are each independently an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group having 1 to 3 carbon atoms, and X － is the counter ion. 【Transformation 3】 [In the formula (a-3), R ３１ , R ３２ , R ３３ are each independently an alkyl group having 1 to 3 carbon atoms, and R ３４ is an alkylene group having 1 to 5 carbon atoms, and R ３５ is a hydrogen atom or a methyl group. － is the counter ion.

2. The surfactant (C) includes a nonionic surfactant (c1) and an anionic surfactant (c2), the mass ratio represented by [the component (c1)] / [the component (c2)] is 1 to 7.5; The liquid detergent composition for textiles according to claim 1.

3. The liquid detergent composition for textile products according to claim 1 or 2, further comprising an alkanolamine (E).

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