DETERGENT COMPOSITION FOR FIBERS

Abstract

The present invention is a friction reducing agent for fibers containing the following components (a) and (b), and further, a detergent composition for fibers containing the following components (a) and (b), wherein a proportion of a content of component (b) to a total content of components (a) and (b) is 20 mass % or more and less than 100 mass %, component (a): an internal olefin sulfonate with 17 or more and 24 or less carbons, and component (b): a sulfosuccinic acid ester or a salt thereof having a hydrocarbon group with 5 or more and 18 or less carbons.

Claims

1: A friction reducing agent for fibers comprising the following components (a) and (b), component (a): an internal olefin sulfonate with 17 or more and 24 or less carbons, and component (b): a sulfosuccinic acid ester or a salt thereof having a hydrocarbon group with 5 or more and 18 or less carbons, wherein a proportion of a content of the component (b) to a total content of the components (a) and (b) is 20 mass % or more and less than 100 mass %.

2: The friction reducing agent for fibers according to claim 1, wherein the component (b) is a compound represented by the following general formula (b1), ##STR00007## wherein R.sup.1 and R.sup.2 each represent a hydrocarbon group with 5 or more and 18 or less carbons, A.sup.1O and A.sup.2O each represent an alkyleneoxy group with 2 or more and 4 or less carbons, x1 and x2 each represent an average number of added moles, which is a number of 0 or more and 10 or less, and M represents a cation.

3: The friction reducing agent for fibers according to claim 2, wherein branched hydrocarbon groups of R.sup.1 and R.sup.2 in the general formula (b1) have a side chain with 3 or more carbons.

4: The friction reducing agent for fibers according to claim 1, wherein the component (b) is a sulfosuccinic acid diester or a salt thereof having two branched hydrocarbon groups with 5 or more and 18 or less carbons, the two hydrocarbon groups having 20 or more carbons in total.

5: A method for reducing friction between fibers comprising, bringing the following components (a) and (b) into contact with the fibers in such amounts that a proportion of an amount of the component (b) to a total amount of the components (a) and (b) is 20 mass % or more and less than 100 mass %, component (a): an internal olefin sulfonate with 17 or more and 24 or less carbons, and component (b): a sulfosuccinic acid ester or a salt thereof having a hydrocarbon group with 5 or more and 18 or less carbons.

6: The method for reducing friction between fibers according to claim 5, wherein the component (b) is a compound represented by the following general formula (b1), ##STR00008## wherein R.sup.1 and R.sup.2 each represent a hydrocarbon group with 5 or more and 18 or less carbons, A.sup.1O and A.sup.2O each represent an alkyleneoxy group with 2 or more and 4 or less carbons, x1 and x2 each represent an average number of added moles, which is a number of 0 or more and 10 or less, and M represents a cation.

7: The method for reducing friction between fibers according to claim 6, wherein branched hydrocarbon groups of R.sup.1 and R.sup.2 in the general formula (b1) have a side chain with 3 or more carbons.

8: The method for reducing friction between fibers according to claim 5, wherein the component (b) is a sulfosuccinic acid diester or a salt thereof having two branched hydrocarbon groups with 5 or more and 18 or less carbons, the two hydrocarbon groups having 20 or more carbons in total.

9: A detergent composition for fibers comprising the following components (a) and (b), component (a): an internal olefin sulfonate with 17 or more and 24 or less carbons, and component (b): a sulfosuccinic acid ester or a salt thereof having a hydrocarbon group with 5 or more and 18 or less carbons, wherein a proportion of a content of the component (b) to a total content of the components (a) and (b) is 20 mass % or more and less than 100 mass %.

10: The detergent composition for fibers according to claim 9, wherein the component (b) is a compound represented by the following general formula (b1), ##STR00009## wherein R.sup.1 and R.sup.2 each represent a hydrocarbon group with 5 or more and 18 or less carbons, A.sup.1O and A.sup.2O each represent an alkyleneoxy group with 2 or more and 4 or less carbons, x1 and x2 each represent an average number of added moles, which is a number of 0 or more and 10 or less, and M represents a cation.

11: The detergent composition for fibers according to claim 10, wherein branched hydrocarbon groups of R.sup.1 and R.sup.2 in the general formula (b1) have a side chain with 3 or more carbons.

12: The detergent composition for fibers according to claim 9, wherein the component (b) is a sulfosuccinic acid diester or a salt thereof having two branched hydrocarbon groups with 5 or more and 18 or less carbons, the two hydrocarbon groups having 20 or more carbons in total.

13: A method for treating a textile product comprising, washing the textile product with a washing liquid obtained by mixing the following components (a) and (b) with water, and thereafter rinsing the textile product with water, component (a): an internal olefin sulfonate with 17 or more and 24 or less carbons, and component (b): a sulfosuccinic acid ester or a salt thereof having a hydrocarbon group with 5 or more and 18 or less carbons, wherein a proportion of a content of the component (b) in the washing liquid to a total content of the components (a) and (b) in the washing liquid is 20 mass % or more and less than 100 mass %.

14: The method for treating a textile product according to claim 13, wherein the component (b) is a compound represented by the following general formula (b1), ##STR00010## wherein R.sup.1 and R.sup.2 each represent a hydrocarbon group with 5 or more and 18 or less carbons, A.sup.1O and A.sup.2O each represent an alkyleneoxy group with 2 or more and 4 or less carbons, x1 and x2 each represent an average number of added moles, which is a number of 0 or more and 10 or less, and M represents a cation.

15: The method for treating a textile product according to claim 14, wherein branched hydrocarbon groups of R.sup.1 and R.sup.2 in the general formula (b1) have a side chain with 3 or more carbons.

16: The method for treating a textile product according to claim 13, wherein the component (b) is a sulfosuccinic acid diester or a salt thereof having two branched hydrocarbon groups with 5 or more and 18 or less carbons, the two hydrocarbon groups having 20 or more carbons in total.

17-20. (canceled)

Description

EXAMPLES

[0226] The components used in the examples and comparative examples are listed below.

Component (a)

[0227] C18IOS: An internal olefin sulfonate potassium salt with 18 carbons. The mass ratio of olefin species (potassium olefin sulfonates) to hydroxy species (potassium hydroxy alkane sulfonates) in this C18IOS is 16/84. The sulfonic acid group position distribution of HAS species in this C18IOS has the following mass ratio: position 1/position 2/position 3/position 4/position 5/positions 6 to 9=1.5/22.1/17.2/21.8/13.5/23.9. Further, (IO-1S)/(IO-2S) is equal to 1.6 by mass ratio.

[0228] Note that the sulfonic acid group position distribution of HAS species included in this C18IOS was measured with liquid chromatography-mass spectrometry (hereinafter abbreviated as LC-MS). Note that internal olefin sulfonates in which a double bond is present at position 6 or more could not be clearly fractionated due to overlapping peaks. The devices and analytical conditions used for the measurements are as follows.

[Measuring Instrument]

[0229] LC device: LC-20ASXR (manufactured by SHIMADZU CORPORATION) [0230] LC-MS device: LCMS-2020 (manufactured by SHIMADZU CORPORATION) [0231] Column: ODS Hypersil (length: 250 mm, inner diameter: 4.6 mm, particle size: 3 m, manufactured by Thermo Fisher Scientific) [0232] Detector: ESI (), m/z=349.15 (C18), 321.10 (C16) and 293.05 (C14)

[Solvent]

[0233] Solvent A: 10 mM ammonium acetate aqueous solution [0234] Solvent B: solution of acetonitrile/water=95/5 with 10 mM ammonium acetate added

[Elution Conditions]

[0235] Gradient: solvent A 60%, solvent B 40% (0-15 min).fwdarw.solvent A 30%, solvent B 70% (15.1-20 min).fwdarw.solvent A 60%, solvent B 40% (20.1-30 min) [0236] Flow rate: 0.5 ml/min [0237] Column temperature: 40 C. [0238] Injection volume: 5 l

Component (b)

[0239] Sodium di-2 ethylhexyl sulfosuccinate [0240] Sodium bis-2-propylheptyl sulfosuccinate

Component (x) (Another Surfactant)

[0241] APES: a (polyoxypropylene) polyoxyethylene lauryl ether sulfate sodium salt, in which the alkyl group is derived from lauryl alcohol, the average number of added moles of the propyleneoxy group is 2 mol, and the average number of added moles of the ethyleneoxy group is 2 mol [0242] LAS: a sodium alkylbenzene sulfonate (alkyl composition: C10/C11/C12/C13=11/29/34/26 (mass ratio), mass average carbon number=17.75) [0243] AES: a sodium polyoxyalkylene alkyl ether sulfate (EMAL 20C, manufactured by Kao Corporation) [0244] Lauric acid: LUNAC L-98, manufactured by Kao Corporation [0245] C16IOS: a potassium internal olefin sulfonate with 16 carbons obtained in the following production example

Production Example of C16IOS

[0246] 7000 g (28.9 mol) of 1-hexadecanol (product name: KALCOL 6098, manufactured by Kao Corporation) and 700 g (10 mass % relative to the raw material alcohol) of -alumina (Strem Chemicals, Inc.) as a solid acid catalyst were prepared in a flask with a stirrer, and reacted under stirring while flowing nitrogen through the system (at 7000 mL/min.) at 280 C. for a reaction period of time appropriate for the intended internal olefin. The obtained crude internal olefin was transferred to a distillation flask and distilled at 136-160 C./4.0 mmHg, thereby obtaining an internal olefin with 16 carbons with an olefin purity of 100%.

[0247] The obtained internal olefin was sulfonated with sulfur trioxide gas in a thin-film sulfonation reactor having an outer jacket while passing cooling water at 20 C. through the reactor's outer jacket. The molar ratio of SO.sub.3 to the internal olefin during the sulfonation reaction was set to 1.09. The obtained sulfonated product was added to an aqueous alkali solution prepared with potassium hydroxide in an amount 1.5 molar times the theoretic acid value, and neutralized while stirred at 30 C. for 1 hour. The neutralized product was hydrolyzed by heating in an autoclave at 160 C. for 1 hour to obtain a potassium C16 internal olefin sulfonate product. This composition was evaporated to dryness to obtain a potassium internal olefin sulfonate with 16 carbons. This C16IOS had the following content proportion (mass %): position 1/position 2/position 3/position 4/positions 5 to 8=0.7/32.1/24.2/25.8/17.2. (IO-1S)/(IO-2S) was equal to 4.8. [0248] C12/14EO9PO2EO9: a polyoxyethylene polyoxypropylene polyoxyethylene mixed alkyl ether (a compound in which a polyoxyethylene group, a polyoxypropylene group and a polyoxyethylene group are bonded to a mixed alkyl group of an alkyl group with 12 carbons and an alkyl group with 14 carbons (7/3 by mass ratio) in this order, wherein the average numbers of added moles of the oxyethylene groups are 9 mol and 9 mol, and the average number of added moles of the oxypropylene group is 2 mol) [0249] C12/14EO10: a polyoxyethylene mixed alkyl ether (in this compound, the mixed alkyl group is a mixed alkyl group of an alkyl group with 12 carbons and an alkyl group with 14 carbons (7/3 by mass ratio), and the average number of added moles of the oxyethylene group is 10 mol)

Example 1 and Comparative Example 1

[0250] The friction reducing agents for fibers of the compositions shown in Table 1 were prepared, and evaluated for the effect of reducing friction between fibers in the following manner. The results are shown in Table 1.

[Friction Between Fibers (Coefficient of Kinetic Friction in Wet Condition)]

(1) Pretreatment of Fibers

(1-1) Pretreatment of Clothing Adjustment Cloth

[0251] About 1.6 kg of commercially available undershirts (GUNZE LIMITED, YG undershirt, 100% cotton, size L) was repeatedly washed consecutive five times in advance using a nonionic surfactant (an ethylene oxide adduct of lauryl alcohol (average number of added moles of 8)) in fully automatic washing machine Panasonic NA-F70PB1 (the used amount of the nonionic surfactant 4.5 g, standard course, water amount 45 L, water temperature 25 C., washing time 12 minutes, water-saving rinsing twice). After that, they were dried for one day under the condition of 25 C. and 43% RH.

(1-2) Pretreatment of Cotton Towel

[0252] Commercially available towels (SENSHU TOWEL, 100% cotton, 34 cm86 cm24 towels) were repeatedly washed consecutive five times in advance using a nonionic surfactant (an ethylene oxide adduct of lauryl alcohol (average number of added moles of 8)) in fully automatic washing machine Panasonic NA-F70PB1 (the used amount of the nonionic surfactant 4.5 g, standard course, water amount 45 L, water temperature 25 C., washing time 10 minutes, water-saving rinsing twice). After that, they were dried for one day under the condition of 25 C. and 43% RH.

(2) Treatment of Evaluation Test Cloth in Drum-Type Washing Machine

[0253] 24 g of each friction reducing agent for fibers in Table 1 was weighed, with which two towels pretreated as described above were washed three times in a drum-type washing and drying machine (manufactured by Panasonic Corporation, NA-VX3800L) under the condition of tap water (25 C.), a total amount of 4 kg of clothing and the standard course (washing for 15 minutes, rinsing once, dehydration for 5 minutes). The mass of clothing was adjusted by using the undershirts pretreated as clothing adjustment cloth as described above. After that, they were removed from the washing tub, lightly shaken and hung up, and then, left to dry for one day under the condition of 25 C. and 43RH. After drying, the plain weave portions of the towels were cut into 2 cm2 cm pieces, which were used as test pieces.

(3) Fiber Friction Measurement

[0254] Kinetic friction measurements were carried out with a kinetic friction measurement machine (TL201Tt manufactured by Trinity-Lab. Inc.) using the towel pieces treated in the above (2). With a towel piece (2 cm2 cm) attached to a friction measurement section with double-sided tape, 100 L of an aqueous solution in which each friction reducing agent for fibers in Table 1 was dissolved at a concentration of 0.53 g/L was added dropwise onto the attached towel piece, and measurements were carried out at a load of 70 g and a rate of 1.0 mm/s three times to determine the average value of the three measurements as a measurement value. The results are shown in Table 1.

TABLE-US-00001 TABLE 1 Example Comparative example 1-1 1-2 1-3 1-4 1-5 1-6 1-1 1-2 1-3 1-4 1-5 Friction Formu- (a) C18IOS 10 5 10 15 10 10 17 20 reducing lation (b) Sodium di-2- 10 20 agent com- ethylhexyl for ponent sulfosuccinate fibers (mass %) Sodium bis-2- 15 10 5 10 10 20 3 propylheptyl sulfosuccinate (x) APES 10 C12/ 10 14EO9PO2EO9 (c) Propylene glycol 5 5 5 5 5 5 5 5 5 5 5 Butyldiglycol 5 5 5 10 5 Water Ba- Ba- Ba- Ba- Ba- Ba- Ba- Ba- Ba- Ba- Ba- lance lance lance lance lance lance lance lance lance lance lance Total 100 100 100 100 100 100 100 100 100 100 100 (b)/[(a) + (b)] (mass %) 50 75 50 25 50 50 100 100 15 0 Friction between fibers 0.21 0.20 0.19 0.22 0.21 0.20 1.02 0.32 0.23 0.26 0.31 (coefficient of kinetic friction in wet condition)

Example 2 and Comparative Example 2

[0255] The liquid detergent compositions for fibers shown in Table 2 were prepared in the following manner and evaluated for the items below. The results are shown in Table 2.

[Preparation of Liquid Detergent Composition for Fibers]

[0256] A Teflon stirrer piece with a length of 5 cm was placed in a glass beaker with a capacity of 200 mL, and the mass of them was measured. Next, 20 g of ion exchange water at 25 C., component (c), then component (a), and then component (b) and/or component (x), were placed in the beaker in this order, and the top of the beaker was sealed with Saran Wrap. The beaker having the contents therein was put in a water bath at 60 C. set on a magnetic stirrer, and the contents were stirred at 100 r/min for 30 minutes while keeping the temperature of water in the water bath in the temperature range of 602 C. After that, the pH of the contents was adjusted to a pH of 7 with an alkali agent (monoethanolamine) or an acid agent (citric acid). The pH measurements were made by the pH measurement method described earlier. Next, after water in the water bath was replaced with tap water at 5 C. and the composition in the beaker was cooled to a temperature of 25 C., other components were further placed therein and stirred for 10 minutes. Next, Saran Wrap was removed and ion exchange water was added such that the mass of the contents reached 200 g, and the contents were stirred again at 100 r/min for 5 minutes, thus obtaining the liquid detergent compositions for fibers listed in Table 2.

[Method for Evaluating Washing Performance]

(1) Preparation of Model Sebum Artificial Stain Cloth

[0257] A model sebum artificial stain liquid of the composition shown below was adhered to cloth to prepare model sebum artificial stain cloth. The model sebum artificial stain liquid was printed on the cloth with a gravure roll coater, thereby adhering the artificial stain liquid to the cloth. The step of adhering the model sebum artificial stain liquid to the cloth to prepare the model sebum artificial stain cloth was carried out with a gravure roll cell capacity of 58 cm.sup.3/m.sup.2, a coating rate of 1.0 m/min, a drying temperature of 100 C. and a drying time of 1 minute. Cotton 2003 (manufactured by Tanigashira Shoten) was used as the cloth. [0258] The composition of the model sebum artificial stain liquid was as follows: lauric acid 0.4 mass %, myristic acid 3.1 mass %, pentadecanoic acid 2.3 mass %, palmitic acid 6.2 mass %, heptadecanoic acid 0.4 mass %, stearic acid 1.6 mass %, oleic acid 7.8 mass %, triolein 13.0 mass %, n-hexadecyl palmitate 2.2 mass %, squalene 6.5 mass %, egg white lecithin liquid crystal 1.9 mass %, Kanuma red soil 8.1 mass %, carbon black 0.01 mass %, and the balance of the composition was water (100 mass % in total).

(2) Evaluation of Washing Power

[0259] Five pieces of the above prepared model sebum artificial stain cloth (6 cm6 cm) were washed with a tergotometer (Ueshima, MS-8212) at 85 rpm for 10 minutes. All washes were made under the following washing condition: city water (3.5 dH, 25 C.) was added to the liquid detergent compositions for fibers listed in Table 2 such that the concentration of the compositions was 0.083 mass %; and the water temperature was 25 C. After washing, rinsing with city water (25 C.) for 3 minutes, and then drying, were performed. The washing rates (%) of the five pieces were measured by the following method, and the average value thereof was determined. The results are shown in Table 2. Note that the reflectances at 550 nm of the original cloth before staining and before and after washing were measured with a colorimeter (manufactured by NIPPON DENSHOKU INDUSTRIES Co., Ltd., Z-300A). In this evaluation, a washing rate of 20% or more is desirable, and a higher numerical value is more preferable.

Washing rate (%)=100[(reflectance after washingreflectance before washing)/(reflectance of original clothreflectance before washing)]

[Method for Evaluating Softening Performance and Wrinkle Suppressing Performance]

(1) Pretreatment of Evaluation Test Cloth

(1-1) Pretreatment of Cotton Towel

[0260] About 1.6 kg of commercially available towels (SENSHU TOWEL, 100% cotton, 34 cm86 cm12 towels) was repeatedly washed consecutive five times in advance using a nonionic surfactant (an ethylene oxide adduct of lauryl alcohol (average number of added moles of 8)) in fully automatic washing machine Panasonic NA-F70PB1 (the used amount of the nonionic surfactant 4.5 g, standard course, water amount 45 L, water temperature 25 C., washing time 10 minutes, water-saving rinsing twice). After that, they were dried for one day under the condition of 25 C. and 43% RH.

[0261] (1-2) Pretreatment of cotton T-shirt About 1.5 kg of commercially available T-shirts (UNIQLO, crew neck T-shirt (M), 100% cotton, 10 T-shirts) was repeatedly washed consecutive five times in advance using a nonionic surfactant (an ethylene oxide adduct of lauryl alcohol (average number of added moles of 8)) in fully automatic washing machine Panasonic NA-F70PB1 (the used amount of the nonionic surfactant 4.5 g, standard course, water amount 45 L, water temperature 25 C., washing time 10 minutes, water-saving rinsing twice). After that, they were dried for one day under the condition of 25 C. and 43% RH.

(1-3) Pretreatment of Clothing Adjustment Cloth

[0262] About 1.6 kg of commercially available undershirts (GUNZE LIMITED, YG undershirt, 100% cotton, size L) was repeatedly washed consecutive five times in advance using a nonionic surfactant (an ethylene oxide adduct of lauryl alcohol (average number of added moles of 8)) in fully automatic washing machine Panasonic NA-F70PB1 (the used amount of the nonionic surfactant 4.5 g, standard course, water amount 45 L, water temperature 25 C., washing time 12 minutes, water-saving rinsing twice). After that, they were dried for one day under the condition of 25 C. and 43% RH.

(2) Washing of Evaluation Fibers

[0263] 24 g of each composition in Table 2 was weighed, with which two towels and two T-shirts pretreated as described above were washed three times in a drum-type washing and drying machine (manufactured by Panasonic Corporation, NA-VX3800L) under the condition of tap water (25 C.) and a total amount of 4 kg of clothing. The mass of clothing was adjusted by using the undershirts pretreated as clothing adjustment cloth as described above. After that, they were removed from the washing tub, lightly shaken and hung up, and then, left to dry for one day under the condition of 25 C. and 43% RH.

(3) Evaluation of Softening Performance

[0264] The softness of the cotton towels treated with the liquid detergent compositions for fibers listed in Table 2 as described in (2) was scored on the basis of the criteria below by six persons skilled in fiber texture evaluation, and the average scores of the six persons were calculated. Then, scores for the cotton towels were obtained per composition from one evaluator, and the average value thereof was used as his/her evaluation score for that composition. Those evaluation scores given by the six persons were totaled and the average score was calculated. The results are shown in Table 2. The table shows values rounded off to one decimal place. In this evaluation, an average score of 1 or more is preferable, and a higher numerical value is preferred. [0265] 1 . . . cotton towels were not finished softer than those treated with the composition of comparative example 2-1 [0266] 0 . . . cotton towels were finished as soft as those treated with the composition of comparative example 2-1 [0267] 1 . . . cotton towels were finished slightly softer than those treated with the composition of comparative example 2-1 [0268] 2 . . . cotton towels were finished softer than those treated with the composition of comparative example 2-1 [0269] 3 . . . cotton towels were finished much softer than those treated with the composition of comparative example 2-1

(4) Evaluation of Wrinkle Suppressing Performance

[0270] The condition of wrinkles in the T-shirts washed with the liquid detergent compositions for fibers listed in Table 2, rinsed and dried was scored on the basis of the criteria below by six persons skilled in fiber texture evaluation, and the average scores of the six persons were calculated. The results are shown in Table 2. The table shows values rounded off to one decimal place. In this evaluation, an average score of 1 or more is preferable, and a higher numerical value is preferred. [0271] 1 . . . T-shirts were finished with more wrinkles than those treated with the composition of comparative example 2-1 [0272] 0 . . . T-shirts were finished equal in the condition of wrinkles to those treated with the composition of comparative example 2-1 [0273] 1 . . . T-shirts were finished with slightly less wrinkles than those treated with the composition of comparative example 2-1 [0274] 2 . . . T-shirts were finished with less wrinkles than those treated with the composition of comparative example 2-1 [0275] 3 . . . T-shirts were finished with much less wrinkles than those treated with the composition of comparative example 2-1

TABLE-US-00002 TABLE 2 Example 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9 2-10 2-11 Liquid Formu- (a) C18IOS 15 5 15 20 10 15 10 15 5 15 15 deter- lation (b) Sodium di-2- 5 gent com- ethylhexyl compo- ponent sulfosuccinate sition (mass Sodium bis-2- 15 5 5 10 5 10 5 10 5 5 for %) propylheptyl fibers sulfosuccinate (x) APES 10 10 10 LAS 5 AES Lauric acid C16IOS C12/ 10 10 5 14EO9PO2EO9 C12/14EO10 10 (c) Propylene 5 5 5 5 5 5 5 5 5 5 5 glycol Phenylglycol 3 3 3 3 3 3 3 3 3 3 3 Butyldiglycol 5 5 5 5 5 5 5 5 5 5 5 Op- Monoetha- 1 1 1 1 1 1 1 1 1 1 1 tional nolamine compo- Citric acid 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 nent Fragrance 1 1 1 1 1 1 1 1 1 1 1 Water Ba- Ba- Ba- Ba- Ba- Ba- Ba- Ba- Ba- Ba- Ba- lance lance lance lance lance lance lance lance lance lance lance Total 100 100 100 100 100 100 100 100 100 100 100 (b)/[(a) + (b)] (mass %) 25 75 25 20 50 25 50 25 66.7 25 25 Washing rate (%) 21.80 20.20 22.10 29.00 36.80 41.20 37.10 38.10 36.30 42.30 43.10 Softening performance 2.2 3.0 2.8 3.0 3.0 3.0 3.0 3.0 2.7 3.0 3.0 Wrinkle suppressing performance 2.5 2.8 2.8 3.0 2.8 2.8 2.8 3.0 2.0 3.0 3.0 Comparative example 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9 2-10 Liquid Formu- (a) C18IOS 20 18 10 10 10 18 deter- lation (b) Sodium di-2- 20 gent com- ethylhexyl compo- ponent sulfosuccinate sition (mass Sodium bis-2- 2 20 10 2 for %) propylheptyl fibers sulfosuccinate (x) APES LAS 20 AES 10 Lauric acid 10 C16IOS 10 C12/ 14EO9PO2EO9 C12/14EO10 10 (c) Propylene 5 5 10 10 5 5 5 5 5 5 glycol Phenylglycol 3 3 3 3 3 3 3 3 Butyldiglycol 5 5 5 5 5 5 5 5 Op- Monoetha- 1 1 1 1 1 1 1 tional nolamine compo- Citric acid 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 nent Fragrance 1 1 1 1 1 1 1 1 1 1 Water Balance Ba- Ba- Ba- Ba- Ba- Ba- Ba- Ba- Ba- lance lance lance lance lance lance lance lance lance Total 100 100 100 100 100 100 100 100 100 100 (b)/[(a) + (b)] (mass %) 0 10 100 100 1 0 100 0 0 10 Washing rate (%) 27.21 25.31 5.55 1.79 25.53 38.40 30.1 32.03 20.26 25.31 Softening performance (Reference) 0 0.7 1.2 0.5 1.0 0.7 1.0 0.7 0 Wrinkle suppressing performance (Reference) 0 0.2 0.3 1.0 0.7 0.8 1.0 0.5 0