Detergent composition for textile products

Abstract

The present invention is a detergent composition for textile products, containing the following component (A) and the following component (B): component (A): an internal olefin sulfonate with 16 or more and 24 or less carbons, wherein a mass ratio between an internal olefin sulfonate (IO-1S) with 16 or more and 24 or less carbons having a sulfonate group present at position 2 or higher and position 4 or lower and an internal olefin sulfonate (IO-2S) with 16 or more and 24 or less carbons having a sulfonate group present at position 5 or higher, which is (IO-2S)/(IO-1S), is 0.30 or more and 5 or less; and component (B): a soil release agent.

Claims

1. A detergent composition for textile products, comprising the following component (A) and the following component (B): component (A): an internal olefin sulfonate with 16 or more and 24 or less carbons, wherein a mass ratio between an internal olefin sulfonate (IO-1S) with 16 or more and 24 or less carbons having a sulfonate group present at position 2 or higher and position 4 or lower and an internal olefin sulfonate (IO-2S) with 16 or more and 24 or less carbons having a sulfonate group present at position 5 or higher, which is (IO-2S)/(IO-1S), is 0.30 or more and 5 or less; and component (B): one or more soil release agents selected from the following components (b1), (b2) and (b3): component (b1): one or two or more of polysaccharide derivatives having one or more groups selected from a cationic group and a hydrocarbon group with 8 or more and 14 or less carbons, the polysaccharide derivatives having at least a hydrocarbon group with 8 or more and 14 or less carbons; component (b2): one or two or more of polymers having one or two units selected from an alkylene terephthalate unit and an alkylene isophthalate unit, and an oxyalkylene unit; and component (b3): one or two or more of polyalkyleneimine polymers having a polyoxyalkylene group.

2. The detergent composition for textile products according to claim 1, wherein a content of an α-olefin sulfonate in the internal olefin sulfonate of the component (A) is 10% by mass or less and 0.01% by mass or more.

3. The detergent composition for textile products according to claim 1, wherein a proportion of the component (A) in the total anionic surfactants contained in the detergent composition for textile products is 50% by mass or more and 100% by mass or less.

4. The detergent composition for textile products according to claim 1, wherein the component (b1) is a polysaccharide derivative in which one or more groups selected from a cationic group and a hydrocarbon group with 8 or more and 14 or less carbons are bonded, directly or via a linking group, to a group lacking a hydrogen atom of a hydroxyl group of a polysaccharide or a derivative thereof, which is a precursor compound; and when the cationic group is bonded to the group lacking a hydrogen atom of a hydroxyl group, it is bonded thereto directly or via a linking group (2), and when the hydrocarbon group is bonded to the group lacking a hydrogen atom of a hydroxyl group, it is bonded thereto directly or via a linking group (1), wherein the linking group (1) is one or more groups selected from: an alkyleneoxy group with 1 or more and 3 or less carbons which may have a hydroxy group; a polyoxyalkylene group in which the alkylene group is an alkylene group with 1 or more and 3 or less carbons; a carbonyl group; a carbonyloxy group; and an oxycarbonyl group; and the linking group (2) is an alkylene group with 1 or more and 4 or less carbons which may include a hydroxy group.

5. The detergent composition for textile products according to claim 4, wherein the polysaccharide is one or more polysaccharides selected from cellulose, guar gum or starch.

6. The detergent composition for textile products according to claim 1, wherein in the polysaccharide derivative of the component (b1) having a hydrocarbon group with 8 or more and 14 or less carbons, a substitution degree of the hydrocarbon group with 8 or more and 14 or less carbons is 0.0001 or more and 0.4 or less.

7. The detergent composition for textile products according to claim 1, wherein in the polysaccharide derivative of the component (b1) having a cationic group, a substitution degree of the cationic group is 0.001 or more and 0.4 or less.

8. The detergent composition for textile products according to claim 1, wherein a weight average molecular weight of a polysaccharide or a derivative thereof, which is a precursor compound of the component (b1), is 1,000 or more and 3 million or less.

9. The detergent composition for textile products according to claim 1, wherein the component (B) is one or two or more of polysaccharide derivatives having one or more groups selected from a hydrocarbon group with 8 or more and 14 or less carbons and a cationic group.

10. The detergent composition for textile products according to claim 1, wherein the detergent composition for textile products is a detergent composition (1) for textile products used by diluting in water; and a content of the component (A) in the detergent composition (1) for textile products is 5% by mass or more and 50% by mass or less and a content of the component (B) therein is 0.1% by mass or more and 10% by mass or less.

11. The detergent composition for textile products according to claim 1, wherein the detergent composition for textile products is a detergent composition (2) for textile products used as a detergent liquid as-is without diluting; and a content of the component (A) in the detergent composition (2) for textile products is 0.005% by mass or more and 1% by mass or less and a content of the component (B) therein is 0.1 mg/kg or more and 800 mg/kg or less.

12. The detergent composition for textile products according to claim 1, comprising water.

13. The detergent composition for textile products according to claim 1, further comprising a nonionic surfactant as a component (C).

14. The detergent composition for textile products according to claim 13, wherein the component (C) is a nonionic surfactant having one or more groups selected from a hydroxyl group and a polyoxyalkylene group.

15. The detergent composition for textile products according to claim 13, wherein the component (C) is a nonionic surfactant having a polyoxyalkylene group and having an HLB of 7 or more and 20 or less.

16. The detergent composition for textile products according to claim 13, wherein the component (C) is a nonionic surfactant having an HLB of 7 or more and 20 or less and represented by the following general formula (C):
R.sup.1(CO).sub.mO— (A.sup.1O).sub.n—R.sup.2  (C) wherein R.sup.1 is an aliphatic hydrocarbon group with 9 or more and 16 or less carbons; R.sup.2 is a hydrogen atom or a methyl group; CO is a carbonyl group; m is a number of 0 or 1; A.sup.1O group is one or more groups selected from an ethyleneoxy group and a propyleneoxy group; and n is an average number of added moles and is a number of 3 or more and 50 or less.

17. The detergent composition for textile products according to claim 13, wherein a content of the component (C) in the detergent composition for textile products is 1% by mass or more and 60% by mass or less.

18. The detergent composition for textile products according to claim 13, wherein a mass ratio (C)/(B) of a content of the component (C) to a content of the component (B) is 2 or more and 100 or less.

19. A method for washing textile products, comprising washing textile products with a detergent liquid containing the detergent composition for textile products according to claim 1 and water, wherein a content of the component (A) in the detergent liquid is 0.005% by mass or more and 1% by mass or less and a content of the component (B) in the detergent liquid is 0.1 mg/kg or more and 800 mg/kg or less.

Description

EXAMPLES

(1) <Formulation Components>

(2) [Component (A) or Component (A′)]

(3) Component (A) or component (A′) is an internal olefin sulfonate. In Table 1, the bonding distribution of sulfonate groups of the internal olefin sulfonates used in Examples, Comparative Examples, Formulation Examples and Comparative Formulation Examples is shown. While component (A′) is also component (D), it is denoted as component (A′) for convenience as it is a comparative compound of component (A).

(4) Component (A) or component (A′) listed in Table 1 was obtained by sulfonating internal olefins having different double-bond positions. Sodium hydroxide was used for the neutralization after the sulfonation. Content proportions of the internal olefin sulfonates in which a sulfonate group is bonded were measured by a high performance liquid chromatography/mass spectrometer (HPLC-MS). Specifically, the hydroxy forms in which a sulfonate group is bonded were separated by high performance liquid chromatography (HPLC) and each of them were subjected to a mass spectrometer (MS) to be identified. Each proportion was determined from the resulting HPLC-MS peak area. In the present specification, each proportion determined from the peak area was calculated as a proportion by mass.

(5) Note that the devices and conditions used for the measurement are as follows: an HPLC device “LD20ASXR” (manufactured by Shimadzu Corporation); a column “ODS Hypersil (R)” (4.6×250 mm, particle size: 3 μm, manufactured by Thermo Fisher Scientific K.K.); sample preparation (1000 times diluted with methanol); eluent A (10 mM ammonium acetate-added water); eluent B (10 mM ammonium acetate-added methacrylonitrile/water=95/5 (v/v) solution); gradient (0 minute (A/B=60/40).fwdarw.15.1 to 20 minutes (30/70).fwdarw.20.1 to 30 minutes (60/40); an MS device “LCMS-2020” (manufactured by Shimadzu Corporation); ESI detection (negative ion detection, m/z: 321.10 (component (A) having 16 carbons); column temperature (40° C.); flow rate (0.5 mL/min); and injection volume (5 μL).

(6) [Component (B)]

(7) Synthesis of (b-1)

(8) 90 g of hydroxyethyl cellulose (Ashland, Natrosol 250 GR, weight average molecular weight: 300,000, substitution degree of hydroxyethyl group (MS): 2.5) was fed into a 1 L separable flask and nitrogen was flowed thereinto. 77.2 g of ion exchanged water and 414.5 g of isopropyl alcohol (hereinafter, referred to as IPA) were added thereto and stirred for 5 minutes and after that, 10.9 g of a 48% aqueous sodium hydroxide solution was added thereto and further stirred for 15 minutes. Next, 5.6 g of lauryl glycidyl ether (Yokkaichi Chemical Co., Ltd., LA-EP) was added thereto and alkylated at 80° C. for 13 hours. Furthermore, 12.9 g of glycidyltrimethylammonium chloride (Sakamoto Yakuhin Kogyo Co., Ltd., SY-GTA80) was added thereto and cationized at 50° C. for 1.5 hours. Thereafter, 10.9 g of a 90% aqueous acetic acid solution was added thereto and stirred for 30 minutes, thereby carrying out the neutralization reaction.

(9) The obtained suspension was transferred equally to two 500 mL centrifuge tubes and subjected to centrifugation using a high speed refrigerated centrifuge (Hitachi Koki Co., Ltd., CR21G III). The supernatant was removed by decantation, and an 85% IPA aqueous solution in the same amount as that of the removed supernatant was added thereto and redispersed. The centrifugation and redispersion operations were repeated again, and after carrying out the third centrifugation, the precipitate was taken out. The obtained precipitate was dried under reduced pressure using a vacuum dryer (ADVANTEC CO., LTD., VR-420) at 80° c. overnight and crushed by an extreme mill (WARING COMMERCIAL, MX-1200XTM) to obtain (b-1) as a powdery cellulose derivative composition. In the obtained (b-1), the substitution degree of the lauryl group was 0.030 and the substitution degree of the cationic group was 0.023. Synthesis of (b-2) and (b-3)

(10) For obtaining the following (b-2) and (b-3), in the above synthesis of (b-1), the weight average molecular weight of the hydroxyethyl cellulose of a raw material (the substitution degree of the hydroxyethyl group remains the same), the amount of the lauryl glycidyl ether fed, the glycidyltrimethylammonium chloride, the reaction conditions and the like were appropriately changed. (b-2)

(11) The weight average molecular weight of the hydroxyethyl cellulose of a raw material of component (b-2) was 150,000, the substitution degree of the lauryl group was 0.019 and the substitution degree of the cationic group was 0.10. (b-3)

(12) The weight average molecular weight of the hydroxyethyl cellulose of a raw material of component (b-3) was 2.1 million, the substitution degree of the lauryl group was 0.016 and the substitution degree of the cationic group was 0.092. Synthesis of (b-4)

(13) 90 g of hydroxyethyl cellulose (Dow Inc., QP-100MH, weight average molecular weight: 2.1 million, substitution degree of hydroxyethyl group (MS): 2.5) was fed into a 1 L separable flask and nitrogen was flowed thereinto. 77.2 g of ion exchanged water and 414.5 g of isopropyl alcohol (hereinafter, referred to as IPA) were added thereto and stirred for 5 minutes and after that, 10.9 g of a 48% aqueous sodium hydroxide solution was added thereto and further stirred for 15 minutes. Next, 10.1 g of 1,2-epoxyoctane (Wako Pure Chemical Industries, Ltd.) was added thereto and alkylated at 80° C. for 13 hours. Thereafter, 10.9 g of a 90% aqueous acetic acid solution was added thereto and stirred for 30 minutes, thereby carrying out the neutralization reaction.

(14) The obtained suspension was transferred equally to two 500 mL centrifuge tubes and subjected to centrifugation using a high speed refrigerated centrifuge (Hitachi Koki Co., Ltd., CR21G III). The supernatant was removed by decantation, and an 85% IPA aqueous solution in the same amount as that of the removed supernatant was added thereto and redispersed. The centrifugation and redispersion operations were repeated again and after carrying out the third centrifugation, the precipitate was taken out. The obtained precipitate was dried under reduced pressure using a vacuum dryer (ADVANTEC CO., LTD., VR-420) at 80° c. overnight and crushed by an extreme mill (WARING COMMERCIAL, MX-1200XTM) to obtain (b-4) as a powdery cellulose derivative composition. In the obtained (b-4), the substitution degree of the hexyl group was 0.053. Synthesis of (b-5) to (b-9)

(15) For obtaining the following (b-5) to (b-7), in the above synthesis of (b-4), the weight average molecular weight of the hydroxyethyl cellulose of a raw material was appropriately changed; different 1,2-epoxyalkanes with different lengths of hydrocarbon groups (the number of carbons of the hydrocarbon group corresponded to that of the hydrocarbon group of each compound) were used instead of the 1,2-epoxyoctane; and the fed amounts, reaction conditions and the like were appropriately changed. In addition, stearyl glycidyl ether was used instead of the 1,2-epoxyoctane, and the fed amounts, reaction conditions and the like were appropriately changed in the above synthesis of (b-4) to obtain the following (b-8). Furthermore, lauryl glycidyl ether was used instead of the 1,2-epoxyoctane, and the fed amounts, reaction conditions and the like were appropriately changed in the above synthesis of (b-4) to obtain the following (b-9). (b-5)

(16) The weight average molecular weight of hydroxyethyl cellulose (substitution degree of hydroxyethyl group: 2.5) of a raw material of (b-5) was 2.1 million and the substitution degree of the decyl group was 0.013. (b-6)

(17) The weight average molecular weight of hydroxyethyl cellulose (substitution degree of hydroxyethyl group: 2.5) of a raw material of (b-6) was 2.1 million and the substitution degree of the lauryl group was 0.015. (b-7)

(18) The weight average molecular weight of hydroxyethyl cellulose (substitution degree of hydroxyethyl group: 2.5) of a raw material of (b-7) was 2.1 million and the substitution degree of the palmityl group was 0.0059. (b-8)

(19) The weight average molecular weight of hydroxyethyl cellulose (substitution degree of hydroxyethyl group: 2.5) of a raw material of (b-8) was 2.1 million and the substitution degree of the stearyl group was 0.010. (b-9)

(20) The weight average molecular weight of hydroxyethyl cellulose (substitution degree of hydroxyethyl group: 2.5) of a raw material of (b-9) was 300,000 and the substitution degree of the lauryl group was 0.0096. Synthesis of (b-10)

(21) The same operations as in the synthesis of (b-1) were carried out to obtain the following (b-10) except that the amount of the glycidyltrimethylammonium chloride was changed to 18.2 g and the reaction with lauryl glycidyl ether was not carried out. (b-10)

(22) The weight average molecular weight of hydroxyethyl cellulose (substitution degree of hydroxyethyl group: 2.5) of a raw material of (b-10) was 300,000 and the substitution degree of the cationic group was 0.14. Synthesis of (b-11) and (b-12)

(23) The same operations as in the synthesis of (b-1) were carried out to obtain the following (b-11) and (b-12) except that the amount of the glycidyltrimethylammonium chloride was appropriately changed and the reaction with lauryl glycidyl ether was not carried out. (b-11)

(24) The weight average molecular weight of hydroxyethyl cellulose (substitution degree of hydroxyethyl group: 2.5) of a raw material of (b-11) was 300,000 and the substitution degree of the cationic group was 0.04. (b-12)

(25) Polyoxyethylene Terephthalate (Repel-O-Tex-SRP4 manufactured by Rhodia)

(26) The substitution degree of component (B) and the weight average molecular weight of a precursor compound of component (B) were measured in the following manner.

(27) (1) Measurement of Substitution Degree

(28) Pretreatment of Polysaccharide Derivative

(29) After dissolving 1 g of a polysaccharide derivative of component (B) in 100 g of water, the aqueous solution was put into a dialysis membrane (Spectra/Por, cutoff molecular weight: 1000) and subjected to a dialysis for 2 days. The obtained aqueous solution was freeze-dried using a freeze-drier (eyela, FDU-1100) to obtain a pretreated polysaccharide derivative. Calculation of Mass of Cationic Group According to Kjeldahl Method

(30) 200 mg of the polysaccharide derivative pretreated in the above manner was precisely weighed, and 10 mL of concentrated sulfuric acid and one Kjeldahl tablet (Merck) were added thereto and subjected to a thermal decomposition in a Kjeldahl decomposition device (manufactured by BUCHI Labortechnik AG, K-432). After the decomposition ended, 30 mL of ion exchanged water was added to the sample and a content of nitrogen (% by mass) in the sample was determined using an automatic Kjeldahl distillation device (manufactured by BUCHI Labortechnik AG, K-370), thereby calculating a mass of the cationic group. Calculation of Mass of Hydrocarbon Group (Alkyl Group) According to Zeisel Method

(31) 200 mg of the polysaccharide derivative pretreated in the above manner and 220 mg of adipic acid were precisely weighed in a 10 mL vial (mighty vial No. 3) and 3 mL of an internal standard solution (tetradecane/o-xylene=1/25 (v/v)) and 3 mL of hydriodic acid were added thereto, and the vial was tightly sealed. In addition, a sample for the calibration curve was prepared by adding 2.4 mg or 9 mg of 1-iododecane instead of the polysaccharide derivative. Each sample was heated while stirred with a stirrer tip, using a block heater (manufactured by PIERCE, Reacti-Therm III Heating/Stirring module) under conditions of 160° C. and 2 hours. After cooling the sample to room temperature, the upper layer (o-xylene layer) was collected and analyzed by gas chromatography (GC) (Shimadzu Corporation, QD2010 plus) under the following conditions: GC Analysis Conditions Column: Agilent HP-1 (length: 30 m, liquid phase film thickness: 0.25 μL, inner diameter: 32 mm) Split ratio: 20 Column temperature: 100° C. (2 min).fwdarw.10° C./min.fwdarw.300° C. (15 min) Injector temperature: 300° C. Detector: HID Detector temperature: 330° C. Introduction amount: 2 μL.

(32) From the amount of the detected 1-iododecane obtained by GC, a mass of the alkyl group in the sample was determined. Measurement of Mass of Hydroxyalkyl Group

(33) A mass of a hydroxyalkyl group was measured by quantifying an alkyl iodide derived from the hydroxyalkyl group in the same manner as the above measurement of the mass of the alkyl group. Calculation of Substitution Degrees of Cationic Group and Alkyl Group

(34) The substitution degrees of the cationic group and the alkyl group were calculated in the molar average by calculating the mass of the skeleton of the polysaccharide derivative from the above masses of the cationic group and the alkyl group and the total mass of the sample and converting each of them into the amount of substance (mol). Measurement of Weight Average Molecular Weight

(35) The weight average molecular weight of hydroxyethyl cellulose (HEC) which is a precursor compound of component (B) was calculated in terms of polyethylene glycol by GPC (gel permeation chromatography).

(36) The measurement conditions are as follows: Column: TSKgel α-M Eluent: 50 mmol/L LiBr, 1% CH.sub.3COOH, ethanol/water=3/7 Temperature: 40° C. Flow rate: 0.6 mL/min.
[Component (C)] (c-1): a polyoxyalkylene lauryl ether (a compound obtained by adding 9 moles on average of an ethyleneoxy group to 1 mole of lauryl alcohol, then adding 2 moles on average of a propyleneoxy group thereto and then adding 9 moles on average of an ethyleneoxy group thereto; HLB=14.5) (c-2): a polyoxyethylene lauryl ether (a compound obtained by adding 14 moles on average of an ethyleneoxy group to 1 mole of lauryl alcohol; HLB=15.4) (c-3): a polyoxyethylene alkyl ether (the alkyl group is a mixed alkyl group of lauryl group/myristyl group=8/2 (mass ratio); the average number of moles of the oxyethylene group added is 10 moles; and HLB=13.9)
[Component (D)] (d-1): a sodium α-olefin sulfonate having 12 to 14 carbons
[Water] Ion exchanged water
<Preparation of Detergent Composition (1) for Textile Products>

(37) Using the above formulation components, detergent compositions (1) for textile products shown in Table 2 and Table 3 were prepared, and detergent compositions (1) for textile products shown in Table 2 were evaluated as to the following items. The results are shown in Table 2.

(38) Detergent compositions (1) for textile products shown in Table 2 and Table 3 were specifically prepared as follows. A stirrer piece made of Teflon (R) 5 cm in length was put into a glass beaker 200 mL in volume and the mass thereof was measured. Next, 80 g of ion exchanged water at 20° C., component (A) or component (A′), component (B), optional component (C) and the like were put thereinto and the beaker was sealed at the top side thereof with Saran Wrap (R).

(39) The beaker with the contents was put into a water bath at 60° C. placed on a magnetic stirrer, and stirred at 100 r/min for 30 minutes while the water temperature in the water bath was kept within a temperature range of 60±2° C. Next, the water in the water bath was replaced with tap water at 5° C., and the composition in the beaker was cooled down until the temperature thereof reached 20° C. Next, Saran Wrap (R) was removed, and ion exchanged water was added thereto until the mass of the contents reached 100 g and stirred again at 100 r/min for 30 seconds to obtain detergent compositions (1) for textile products listed in Table 2 and Table 3.

(40) <Preparation of Detergent Composition (2) for Textile Products>

(41) Using the above formulation components, detergent compositions (2) for textile products shown in Table 4 were prepared.

(42) Detergent compositions (2) for textile products shown in Table 4 were specifically prepared as follows. A stirrer piece made of Teflon (R) 8 cm in length was put into a glass beaker 1000 mL in volume and the mass thereof was measured. Next, 800 g of water which was prepared to have the hardness of 4° dH by adding calcium chloride and magnesium chloride at a proportion of 8:2 by a mass ratio to ion exchanged water at 20° C., component (A) or component (A′), component (B), optional component (C) and the like were put thereinto in the formulation of Table 4, and the beaker was sealed at the top side thereof with Saran Wrap (R).

(43) The beaker with the contents was put into a water bath at 60° C. placed on a magnetic stirrer, and stirred at 200 r/min for 30 minutes while the water temperature in the water bath was kept within a temperature range of 60±2° C. Next, the water in the water bath was replaced with tap water at 5° C., and the composition in the beaker was cooled down until the temperature thereof reached 20° C. Next, Saran Wrap (R) was removed, and water which was prepared to have the hardness of 4° dH by adding calcium chloride and magnesium chloride at a proportion of 8:2 by a mass ratio to ion exchanged water at 20° C. was added until the mass of the contents reached 100 g and stirred again at 200 r/min for 30 seconds to obtain detergent compositions (2) for textile products listed in Table 4.

(44) In Table 4, for example, 150 mg/kg, a concentration of component (A), corresponds to 0.015% by mass.

(45) In addition, in Table 4, the balance of detergent composition (2) for textile products is water with the hardness of 4° dH in an amount with which the total composition adds up to 1 kg.

(46) <Evaluation of Washability>

(47) Using detergent composition (1) for textile products shown in Table 2, evaluation of washability was carried out. The results are shown in Table 2. In addition, washability of detergent composition (1) for textile products shown in Table 3 can also be evaluated in the following manner. Furthermore, washability of detergent composition (2) for textile products shown in Table 4 can be evaluated by replacing the following detergent liquid with detergent composition (2) for textile products shown in Table 4.

(48) (1) Pretreatment of Textile Products Including Chemical Fibers

(49) 18 AIRism crew neck short-sleeve t-shirts (fiber constitution: polyester 89%, polyurethane 11%; manufactured by FAST RETAILING CO., LTD.; product number 182496; and size 4XL) were washed with a standard course of a fully automatic washing machine (manufactured by Panasonic Corporation, NA-F70PB1) five times in a cumulative manner (4.8 g of EMULGEN 108 (manufactured by Kao Corporation) for washing; amount of water: 48 L; washed for 12 minutes; rinsed twice; and dewatered for 3 minutes). Thereafter, they were washed once with water alone (amount of water: 48 L; washed for 12 minutes; rinsed twice; and dewatered for 3 minutes), further rinsed with running water using a two tank type washing machine (manufactured by Hitachi, Ltd., model: PS-H45L) until bubbles completely disappeared, and dried at 24° C. for 24 hours at 55% RH. Thereafter, they were cut into 6 cm×6 cm sized pieces.

(50) (2) Preparation of Textile Products for Evaluating Washability

(51) (2-1) Preparation of Soil Release-Treated Clothes

(52) Soil release treatment was carried out using a shaker (Yamato Scientific Co., Ltd., model number: SA300). The water used for the treatment was washing water which was prepared to have the hardness of 4° dH by adding calcium chloride and magnesium chloride at a proportion of 8:2 by a mass ratio to ion exchanged water. A detergent liquid was obtained by mixing component (A), component (B) and component (C) with the washing water such that the total amounts of the components in detergent composition (1) for textile products listed in Table 2 is at a concentration of 150 mg/kg in the detergent liquid. 50 mL of the detergent liquid (24° C.) and 5 pieces of the textile products obtained in the above (1) were put into a 100 mL screw bottle (Maruemu Corporation, No. 8, 40 mm×120 mm). The bath ratio was 20. The textile products were shaken in a horizontally reciprocating manner with a shaker at 300 rpm for 10 minutes. After the treatment, they were dewatered for 1 minute with a two tank type washing machine (manufactured by Hitachi, Ltd., model: PS-H45L). Next, 50 mL of the washing water (24° C.) and the obtained textile products were put into a 100 mL screw bottle. The textile products were rinsed with a shaker at 340 rpm for 3 minutes. After rinsing, they were dewatered for 1 minute with the two tank type washing machine and dried at 24° C. for 24 hours at 55% RH to prepare textile products for evaluating washability.

(53) (2-2) Preparation of Soil Release-Treated Clothes Artificially Soiled with Model Sebum

(54) 0.1 mL of model sebum solution for artificially soiling formed by mixing 0.02% Sudan III (manufactured by Tokyo Chemical Industry Co., Ltd.) as a pigment into a model sebum with the following composition was applied to the center of each textile product obtained in the above (2-1) in the shape of a circle 4 cm in diameter and the textile products were dried for 1 hour with an air-blow constant-temperature drying oven (manufactured by ADVANTEC CO., LTD., DRM420DA) under an environment of 60° C. Thereafter, the textile products were dried under an environment of 20° C. and 70% RH for 24 hours to prepare soil release-treated clothes artificially soiled with the model sebum. *Composition of the model sebum: lauric acid: 0.54% by mass, myristic acid: 1.78% by mass, pentadecanoic acid: 0.91% by mass, palmitic acid: 3.53% by mass, heptadecanoic acid: 0.30% by mass, linoleic acid: 1.40% by mass, oleic acid: 19.74% by mass, triolein: 46.00% by mass, squalene: 13.80% by mass, cholesterol: 2.90% by mass, sterol ester: 3.00% by mass, and n-hexadecyl palmitate: 6.10% by mass (total: 100% by mass).

(55) (2-3) Washing Test

(56) Washing operation was carried out using a tergotometer (manufactured by Ueshima Seisakusho Co., Ltd., MS-8212). The water used for the washing was washing water which was prepared to have the hardness of 4° dH by adding calcium chloride and magnesium chloride at a proportion of 8:2 by a mass ratio to ion exchanged water. A detergent liquid was obtained by mixing component (A), component (B) and component (C) with the washing water such that the total amounts of the components in detergent composition (1) for textile products listed in Table 2 is at a concentration of 150 mg/kg in the detergent liquid. 600 mL of the detergent liquid and five pieces of the clothes artificially soiled with the model sebum obtained in the above (2-2) were put into a 1L stainless steel beaker for washing test (bath ratio: 300). The temperature of the detergent liquid was 20° C. The clothes artificially soiled with the model sebum were washed with the tergotometer at 85 rpm for 10 minutes. After washing, they were rinsed in 5 L of reserved water. After rinsing, they were dewatered and dried at 24° C. for 24 hours at 55% RH.

(57) (2-4) Evaluation of Washing Rate

(58) Washing rates obtained in the washing test of the above (2-3) for the clothes artificially soiled with the model sebum were measured in the following manner and the average value of 5 pieces was determined. The results are shown in Table 2. The reflectances at 460 nm for the original clothes before soiling and the clothes before and after washing were measured with a differential colorimeter (manufactured by Nippon Denshoku Industries Co., Ltd., SE-2000) and the washing rates (%) were determined according to the following formula. Calibration was carried out using a standard reflector (white, X: 94.03, Y: 95.96, Z: 113.16). Note that the values in Table 2 are the average values of the washing rates for 5 pieces. The larger the value of washing rate is, the more excellent the washability is.
Washing rate (%)=100×[(reflectance after washing−reflectance before washing)/(reflectance of original cloth−reflectance before washing)]

(59) TABLE-US-00001 TABLE 1 Component (A) (a-1) (a-2) (a-3) (a-4) (a-5) (a-6) Number of carbons in raw material 16 16 16 16 16 16 olefin Distribution of Position 1 1.2 1.5 1.4 1.2 1.1 0.9 sulfonate (IO-1S) Position 2 27.2 24.1 22.3 20.4 18.6 16.8 groups Position 3 21.6 19.9 18.4 17.1 15.6 14.3 (% by mass) Position 4 25.0 24.6 23.5 22.4 21.3 20.2 (IO-2S) Position 5 25.0 29.9 34.4 38.9 43.4 47.8 or higher Total 100.0 100.0 100.0 100.0 100.0 100.0 (IO-1S) (% by mass) 73.8 68.6 64.2 59.9 55.5 51.3 (IO-2S)/(IO-1S) (mass ratio) 0.34 0.44 0.54 0.65 0.78 0.93 Component Component (A) (A′) (a-7) (a-8) (a-9) (a′-1) Number of carbons in raw material 16 16 18 16 olefin Distribution of Position 1 0.8 0.6 1.4 0.9 sulfonate (IO-1S) Position 2 14.9 13.1 22.1 30.2 groups Position 3 12.9 11.5 17.2 23.1 (% by mass) Position 4 19.1 18.0 21.8 25.5 (IO-2S) Position 5 52.3 56.8 37.5 20.3 or higher Total 100.0 100.0 100.0 100.0 (IO-1S) (% by mass) 46.9 42.6 61.1 78.8 (IO-2S)/(IO-1S) (mass ratio) 1.1 1.3 0.61 0.26

(60) TABLE-US-00002 TABLE 2 Examples 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Detergent Formulation (A) (a-1) 23 composition component (a-2) 23 23 (1) for textile (% by mass) (a-3) 23 23 products (a-4) 23 23 (a-5) 23 23 23 23 23 (a-6) 23 23 (a-7) 23 23 (a-8) 23 (a-9) (A′) (a′-1) (B) (b-1) 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 (b-2) 0.3 (b-3) 0.3 (b-4) 0.3 0.3 0.3 0.3 0.3 0.3 (b-5) (b-6) (b-7) (b-8) (b-9) (b-10) (b-11) (C) (c-1) 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 23 (c-2) 23 (c-3) (D) (d-1) Ion Balance Balance Balance Balance Balance Balance Balance Balance Balance Balance Balance Balance Balance Balance Balance Balance Balance exchanged water Total 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 Washing rate (%) 33 35 36 41 43 48 48 48 40 45 35 35 37 43 43 44 47 Comparative Examples Examples 18 19 20 21 22 23 24 25 26 27 28 1 2 3 Detergent Formulation (A) (a-1) composition component (a-2) (1) for textile (% by mass) (a-3) products (a-4) (a-5) 23 23 23 23 23 23 23 23 (a-6) (a-7) 23 (a-8) 23 (a-9) 23 23 (A′) (a′-1) 23 (B) (b-1) 0.3 0.3 0.3 (b-2) (b-3) (b-4) 0.3 (b-5) 0.3 (b-6) 0.3 0.3 (b-7) 0.3 0.3 (b-8) 0.3 (b-9) 0.3 (b-10) 0.3 (b-11) 0.3 (C) (c-1) 23 23 23 23 23 23 23 23 23 23 23 23 23 (c-2) (c-3) 23 (D) (d-1) 23 Ion Balance Balance Balance Balance Balance Balance Balance Balance Balance Balance Balance Balance Balance Balance exchanged water Total 100 100 100 100 100 100 100 100 100 100 100 100 100 100 Washing rate (%) 47 43 44 36 35 40 33 35 43 37 35 31 31 30

(61) TABLE-US-00003 TABLE 3 Formulation Example (1) 1 2 3 4 5 6 7 8 9 10 Detergent Formulation (A) (a-1) 10 composition (1) component (a-3) 10 for textile (% by mass) (a-5) 10 10 35 40 products (a-7) 10 25 25 (a-9) 10 (A′) (a′-1) (B) (b-1) 0.15 0.15 0.15 0.15 1 0.5 0.5 (b-4) 0.15 (b-10) 0.5 (b-11) 0.5 (b-12) (C) (c-1) 5 5 5 5 5 5 10 15 15 (c-2) 15 (c-3) (D) (d-1) Ion Balance Balance Balance Balance Balance Balance Balance Balance Balance Balance exchanged water Total 100 100 100 100 100 100 100 100 100 100 Comparative Formulaton Formulation Example (1) Example (1) 11 12 13 14 15 1 2 3 Detergent Formulation (A) (a-1) composition (1) component (a-3) for textile (% by mass) (a-5) 23 23 23 products (a-7) 10 (a-9) 15 23 (A′) (a′-1) 10 (B) (b-1) 0.3 0.15 0.15 (b-4) (b-10) 0.3 (b-11) (b-12) 30 0.3 (C) (c-1) 23 23 23 5 5 5 (c-2) (c-3) 10 23 (D) (d-1) 10 Ion Balance Balance Balance Balance Balance Balance Balance Balance exchanged water Total 100 100 100 100 100 100 100 100

(62) TABLE-US-00004 TABLE 4 Comparative Formulation Formulation Example (2) Example (2) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 Detergent Formulation (A) (a-1) 150 composition (2) component (a-2) 150 for textile (mg/kg) (a-4) 150 300 300 150 120 120 120 products (a-6) 150 100 200 150 (a-8) 150 300 200 (A′) (a′-1) 150 (B) (b-1) 5 5 5 5 3 2 2 4 5 5 (b-5 4.5 (b-10) 10 4 (b-11) 2 (b-12) 300 4 (C) (c-1) 150 150 150 150 150 150 300 200 200 23 23 23 150 150 5 (c-2) 150 (c-3) 120 120 (D) (d-1) 150