Method of cleaning hydrophobic soil from textiles

The use of high ratios of low vapor pressure oxygenated solvents in aqueous wash media effectively addresses the challenge of hydrophobic stains on textiles, enhancing cleaning efficiency and reducing costs.

WO2026019690A1PCT designated stage Publication Date: 2026-01-22DOW GLOBAL TECHNOLOGIES LLC +1
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Patent Information

Application Number
PCT/US2025/037497
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-07-15
Filing Date
2025-07-14
Publication Date
2026-01-22

AI Technical Summary

Technical Problem

Hydrophobic stains on textiles are challenging to remove using standard aqueous laundry methods, necessitating specialized and expensive dry cleaning processes.

Method used

A method involving an aqueous wash medium containing a high ratio of low vapor pressure oxygenated solvents, such as ethers, esters, or alcohols, with at least 8 carbon atoms, and surfactants, enhances the removal of hydrophobic stains.

Benefits of technology

The method effectively removes hydrophobic stains using standard aqueous laundry methods, improving cleaning efficiency and reducing costs compared to dry cleaning.

✦ Generated by Eureka AI based on patent content.

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Abstract

Washing textiles in aqueous wash medium wherein the wash medium comprises one or more surfactant and an oxygenated solvent at a weight ratio of the solvent to the one or more surfactant is greater than 5:1 can be effective for removing hydrophobic stains on the textile. The oxygenated solvent can have a vapor pressure of less than 0.1 mmHg at 20°C.
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Description

86079-WO-PCT (DC60219PCT) Method of Cleaning Hydrophobic Soil from Textiles FIELD OF THE INVENTION

[0001] The invention is in the field of cleaning of textiles (e.g., particularly, woven and non-woven fabrics or cloths, fibers, and the like). BACKGROUND OF THE INVENTION

[0002] Hydrophobic stains on textiles can be challenging to remove in typical aqueous based wash media. Such hydrophobic stains can include cosmetics, greasy soils, or the like. Thus, dry cleaning and other non-aqueous laundry methods are often used for such stains. But these methods can be specialized and expensive.

[0003] A need remains for an efficient cleaning technique for hydrophobic stains consistent with standard aqueous laundry methods. SUMMARY OF THE INVENTION

[0004] Disclosed herein is method of washing textiles in aqueous wash medium. The wash medium comprises one or more surfactant and an oxygenated solvent having a vapor pressure of less than 0.1 mmHg at 20℃. The weight ratio of the solvent to the one or more surfactant is greater than 5:1 or at least 10:1 up to 30:1. DETAILED DESCRIPTION OF THE INVENTION

[0005] The use of low vapor pressure oxygenated solvents in relatively high amounts in an aqueous wash medium has been discovered to improve removal of hydrophobic stains.

[0006] Disclosed herein is a method comprising providing a textile to be washed, such as a textile including a hydrophobic stain and washing the textile in an aqueous wash medium comprising a high amount a solvent which comprises a low vapor pressure oxygenated solvent.

[0007] The oxygenated solvent can be an ether, an ester, an alcohol or a ketone having at least 8, at least 9, at least 10 carbon atoms. Preferably the total number of carbon atoms is less than 20. For example, subject to the minimum number of carbon atoms of at least 8, at least 9, or at least 10, the oxygenated solvent can be a molecule having the formula R1-O-(R2-O-)n-R3where R1and R3are independently an alkyl group of from 1, from 2, from 3, from 4, or from 5 up to 10, up to 9, up to 8, up to 7, or up to 6 carbon atoms, or an alkyl substituted or unsubstituted phenyl group, or R3can be H, R2is a linear or branched alkylene group (e.g., -CH2CH2-) of 2, 3, 4, 5, or 6 carbon atoms or a cycloalkyl of 5 or 6 carbon atoms, and n is an integer of 1, 2, 3, 4, 5, 6, 7, or 8, provided the total number of carbon atoms in the molecule is at least 8, at least 9, or at least 10. As another example, subject to the minimum number of carbon atoms of at least 8, at least 9, or at least 10, the oxygenated solvent can be86079-WO-PCT (DC60219PCT) an ester of the formula R4-(CO)-O-R5where R4is an alkyl group of at least 5, at least 6, at least 7, or at least 8 up to 18, up to 16, up to 14 carbon atoms, and R5is an alkyl group of 1, 2, 3, 4, or 5 up to 10 carbon atoms. As yet another example, the oxygenated solvent can be an alcohol of the formula R6-OH where R6is a linear or branched alkyl group of from 1, from 8, from 9, or from 10, up to 20, up to 19, up to 18, up to 17, or up to 16 carbon atoms. As still another example, subject to the minimum number of carbon atoms of at least 8, at least 9, or at least 10. As still another example, the oxygenated solvent can be a ketone of the formula R7-(C=O)-R8where R7and R8are independently a linear or branched alkyl groups (optionally including hydroxy substitution) having from 1, from 2, from 3, from 4, or from 5 up to 18, up to 17, up to 16, up to 15, or up to 14 carbon atoms, where the total number of carbon atoms is no more than 20. The oxygenated solvent can comprise a mixture of two or more such specific oxygenated solvents.

[0008] The aqueous wash medium the total wash composition used to wash the soiled textile. The aqueous wash medium comprises at least 90 weight percent water and from 0.1, from 0.5 or from 1 up to 10, up to 8, or up to 5 weight percent of the oxygenated solvent based on total weight of the wash medium. When the solvent is included in a detergent formulation, the detergent can comprise the solvent in an amount of from 10, from 30, from 30, 40, from 50, from 60% up to 90, up to 85, or up to 80% based on total weight of the detergent.

[0009] The aqueous wash medium includes one or more surfactants. A weight ratio of the oxygenated solvent to the one or more surfactants can be at least 5:1, at least 8:1, at least 10:1, at least 15:1, at least 20:1 up to 100:1, up to 50:1, or up to 30:1. The surfactant can be present in an amount of, for example, from 0.01, or from 0.02 up to 0.1 up to 0.08, or up to 0.06 percent based on total weight of the wash medium. When provided in a detergent, the surfactant can be present in an amount of, for example, from 1 or from 2 up to 15, up to 12, or up to 10 percent based on total weight of the detergent.

[0010] Examples of anionic surfactants include sulfonates or sulfonic acid salts such as those having a formula R3SO3M wherein R3represents a hydrocarbyl group selected from the group consisting of straight or branched alkyl radicals having from 12 to 24 carbon atoms; and alkylphenyl radicals having from 9 to 15 carbon atoms in the alkyl group; and M is a salt-forming cation selected from the group consisting of Na, K, NH4, and mono-, di-, and trialkanol amines having 2 to 3 carbon atoms in the alkanol groups. Additionally, suitable anionic surfactant may include one or more salts (e.g., sodium, potassium, ammonium, and substituted ammonium salts such as mono-, di- and triethanolamine salts) of anionic86079-WO-PCT (DC60219PCT) carboxylates and sarcosinates. Exemplary anionic sulfonate surfactants can include salts of C5-C20linear alkylbenzene sulfonates, such as dodecylbenzene sulfonic acid (DDBSA), alkyl ester sulfonates, C6-C22 primary or secondary alkane sulfonates, C6-C24 olefin sulfonates, sulfonated polycarboxylic acids, alkyl glycerol sulfonates, fatty acyl glycerol sulfonates, fatty oleyl glycerol sulfonates, and any mixtures thereof. Exemplary anionic sulfates can include linear and / or branched primary and secondary alkyl sulfates, alkyl ethoxysulfates, fatty oleoyl glycerol sulfates, alkyl phenol ethylene oxide ether sulfates, C5-C17 acyl-N—(C1-C4 alkyl) and —N—(C1-C2hydroxyalkyl) glucamine sulfates, and sulfates of alkylpolysaccharides, such as alkylpolyglucoside sulfates. Exemplary alkyl sulfates can include linear and branched primary C10-C18alkyl sulfates. Exemplary alkyl ethoxysulfate surfactants can include C10- C18 alkyl sulfates that have been ethoxylated with from 0.5 to 20 moles of ethylene oxide per molecule. Exemplary anionic carboxylates can include alkyl ethoxy carboxylates, and alkyl polyethoxy polycarboxylates.

[0011] Examples of non-ionic surfactants include a suitable nonionic surfactant may include alkyl ethoxylate condensation products of aliphatic alcohols with from 1 to 25 moles of ethylene oxide wherein the alkyl chain of the aliphatic alcohol can either be straight or branched, primary or secondary, and generally contains from 6 to 22 carbon atoms. Further suitable nonionic surfactants can include water soluble ethoxylated C6-C18 fatty alcohols and C6-C18mixed ethoxylated / propoxylated fatty alcohols. For example, the ethoxylated fatty alcohols can be Cm-Cis ethoxylated fatty alcohols with a degree of ethoxylation of from 3 to 20. In some embodiments, mixed ethoxylated / propoxylated fatty alcohols can have an alkyl chain length of from 10 to 18 carbon atoms, a degree of ethoxylation of from 3 to 30, and a degree of propoxylation of from 1 to 10. In further embodiments, suitable nonionic surfactants can include those formed from the condensation of ethylene oxide with a hydrophobic base formed by the condensation of propylene oxide with propylene glycol. Preferred nonionic surfactants include ethoxylated 2-ethylhexanol, ethoxylated seed oils, butanol capped ethoxylated 2-ethylhexanol, and mixtures thereof. More preferred nonionic surfactants include secondary alcohol ethoxylates. Most preferred nonionic surfactants include fatty alcohol polyglycol ethers.

[0012] Other optional components in the wash media (or in a detergent used to form the wash medium) include:

[0013] Alkaline sources. Examples of alkaline sources include, but are not limited to, carbonate-based alkalinity sources, including, for example, carbonate salts such as alkali metal carbonates; caustic-based alkalinity sources, including, for example, alkali metal86079-WO-PCT (DC60219PCT) hydroxides; other suitable alkalinity sources may include metal silicate, metal borate, and organic alkalinity sources. Exemplary alkali metal carbonates that can be used include, but are not limited to, sodium carbonate, potassium carbonate, bicarbonate, sesquicarbonate, and mixtures thereof. Exemplary alkali metal hydroxides that can be used include, but are not limited to, sodium, lithium, or potassium hydroxide. Exemplary metal silicates that can be used include, but are not limited to, sodium or potassium silicate or metasilicate. Exemplary metal borates include, but are not limited to, sodium or potassium borate. Other sources can also include Organic alkalinity sources such as amines, alkanolamines, and amino alcohols. The alkalinity may be added to the composition in any form known in the art, including as solid beads, granulated or particulate form, dissolved in an aqueous solution, or a combination thereof. In general, in a detergent the alkalinity source(s) can be present in an amount between greater than 0, from 0.01, from 0.05, from 0.1, % up to 20, up to 15, up to 10 or up to 5% by weight, based on total weight of the cleaning composition provided in detergent form. In the wash medium, the alkalinity source can be present in amounts of 0, from 10, from 50, from 100 parts per million (ppm) by weight up to 4000, up to 3000, up to 2000, up to 1500, or up to 100 ppm based on total weight of the wash medium. The pH of the wash medium can be greater than 7.

[0014] Co-builder. Examples of co-builders include, but are not limited to organic phosphonates, such as an organic-phosphonic acid and alkali metal salts thereof. In, a in a laundry detergent the amount of cobuilder can be 0 or can be from 0.02, from 0.05, from 0.08, from 0.1 or from 0.12 up to 10, up to 8, up to 5, up to 4, up to 2, or up to 1 weight percent based on the total weight of the laundry detergent composition. In the wash medium, the amount of cobuilder can be from 0, from 0.1, from 0.5, or from 1 up to 100, up to 50, up to 10, up to 5 parts per million by weight based on total weight of the wash medium.

[0015] Chelating Agent(s) (also referred to as chelator(s)). Examples of chelating agents or chelators include N-hydroxyethylaminodiacetic acid; hydro xyethylenediaminetetraacetic acid, nitrilotriacetic acid (NTA); methylglycinediacetic acid (MGDA); 2-hydroxyethyliminodiacetic acid (HEIDA); ethylenediaminetetraacetic acid (EDTA); N-hydroxyethyl-ethylenediaminetriacetic acid (HEDTA); diethylenetriammepentaacetic acid (DTPA); alanine-N,N-diacetic acid; trisodium methylglycine diacetate (MGDA), tetrasodium glutamate diacetate (GLDA), ethylenediamine-N,N′-disuccinic acid (EDDS), polyaspartic acid, iminodisuccinic acid (IDS), and trisodium citrate, and mixtures thereof can be present. Preferred amino carboxylates include the sodium salt of EDTA, MGDA, and HEIDA. The total content of chelator(s)86079-WO-PCT (DC60219PCT) present in a laundry detergent composition can be 0% to about 10%, about 0.02% to about 8%, about 0.05% to about 5%, about 0.08% to about 4%, about 0.1% to about 2%, or about 0.12% to about 1% by weight based on the total weight of the laundry detergent composition. In the wash medium, the amount of chelating agents can be from 0, from 0.1, from 0.5, or from 1 up to 100, up to 50, up to 10, up to 5 parts per million by weight based on total weight of the wash medium.

[0016] Perfume Agent(s) to provide fragrance can be present. In a detergent the perfume agent can be present in an amount of 0 to 10 wt% (preferably, 0.001 to 5 wt %; more preferably, 0.005 to 3 wt%; most preferably, 0.01 to 2.5 wt%), based on the weight of the laundry detergent formulation. In the wash medium, the amount of perfume agents can be from 0, from 0.1, from 0.5, or from 1 up to 100, up to 50, up to 10, up to 5 parts per million by weight based on total weight of the wash medium.

[0017] Viscosity or rheology modifiers. Examples of viscosity or rheology modifiers include aqueous miscible organic solvents with non-limiting examples of ethanol; propylene glycol; glycerol; 1,3-butanediol; 1,3-hexanediol; dipropylene glycol and mixtures thereof. Propylene glycol can be preferred. The viscosity or rheology modifier can adjust the viscosity of a detergent composition to a range of about 100 millipascal-seconds (mPa-s) to about 4000 mPa-s, about 150 mPa-s to about 3000 mPa-s, about 200 mPa-s to about 2500 mPa-s, about 225 mPa-s to about 2000 mPa-s, or about 250 mPa-s to about 1500 mPa-s (measured at 21° C. using a standard, shear rheometer, such as available from Anton Parr). The amount of viscosity or rheology modifier in a laundry detergent composition can be from 0, from 0.01, from 0.1, from 0.5, from 1, from 2 up to 25 up to 20, up to 15, up to 10, up to 5 weight percent based on total weight of the detergent.

[0018] The oxygenated solvent can be introduced into the wash medium as a component of a detergent or as a separate additive. When introduced as a component of a detergent, the solvent can comprise from 20, from 25, from 30, from 35, or from 40 up to 90, up to 80, up to 70, up to 50 or up to 50 weight percent based on total weight of the detergent. EXAMPLES

[0019] Various formulations of wash media having the compositions as shown in Table 1 were evaluated.

[0020] The nonionic surfactant was TERGITOL™ 25-7 Surfactant (Alcohols, C12- 15, ethoxylated with an average of 7 moles of ethylene oxide, CAS 68131-39-5). The anionic surfactant was Biosoft™ D-40 (DDBSA). The solvent was (a) tripropylene glycol n-butyl ether (TPnB, available for example as Dowanol™ TPnB glycol ether), (b) ethyl laurate86079-WO-PCT (DC60219PCT) (available for example as Diamosolve™ 323), (c) propylene glycol phenyl ether (PPH, available for examples as Dowanol™ PPH), (d) propylene glycol butyl ether (PnB, available for example as Dowanol™ PnB glycol ether), (e) propoxylated 2ethylhexanol having on average five propoxyl groups (2EH5PO), or (f) ethoxylated n-hexanol having an average of 2.6 moles of (-CH2CH2O-) groups per molecule (nhexyl E2.6). For certain examples a caustic (50% sodium hydroxide in water) was used. For certain samples 0.1 Molar sodium carbonate was used. For certain samples an additional solvent of propylene glycol was used. For certain samples ACUSOL™ 845 Polymer was included as an optional dispersant. Table 1 lists the ingredients in the aqueous wash medium. The remainder of the wash medium was water. Cleaning Procedure

[0021] A tergotometer(Terg-O-Tometer, Model 7243ES by US Testing Company)bath was filled with 1 liter (L) of prepared 5 gpg (grains per gallon) hard water. The equipment is then turned on and the bath heated to the desired temperature (25 °C, 40 °C or 60 °C) and agitation set at 100 rotations per minute (rpm). The detergent package and the solvent additive (when added separately from the detergent) were added to the bath when the bath set temperature was reached. Once the detergent and solvent additive were added, the bath solutions were agitated for 2 minutes to ensure complete mixing of the detergent package. Triplicates of the soiled swatches were put in each of the pots. Ten minutes of agitation (wash cycle) was used. After the wash cycle, the washed swatches were then put in room temperature 5gpg hard water baths for rinsing. The swatches were swished around for ~10-15 seconds. The rinsing process was repeated 2 more times for a total of 3 rinses. To remove the excess water from the rinsed swatches, they were put in a salad spinner and allowed to spin for about 1-2mins. Finally, the rinsed swatches were spread out flat on paper towels and allowed to dry overnight.

[0022] Measurement of the detergency of the formulations was determined colorimetrically on a Hunter ColorQuest XE colorimeter. All the swatches used were read on the Colorimeter using the L*, a*, b* values with the reflectance at 460nm BEFORE and AFTER the washing. Where measurements with the subscript “w” represent the washed samples and those with subscript “s” represent the unwashed stained samples. The ΔE was calculated using the following equation: ^^ = ^^^^ − ^^^^ + ^^^ − ^^^^ + ^^^ − ^^^^A higher value of delta86079-WO-PCT (DC60219PCT)

[0023] The results are shown in Table 1. As can be seen having a high weight ratio of oxygenated solvent:surfactant produces improved cleaning results as shown by higher delta E.86079-WO-PCT (DC60219PCT)

[0024] Table 1 Samp ID C1C2IE1 C8 IE9 C3 C4 IE2 C5IE3 C6 IE4 C7IE5IE6IE7 .6 0.03 0.02 0.5 0.07 0 0.002 0

[0025] *Soil 1 Generic Brand Long-lasting Foundation on Cotton

[0026] **Soil 2 50% Beef Lard 50% Beef Fat on Cotton (CFT-C-S163s)

[0027] ***Soil 3 Generic Brand Long-lasting Lipstick on Cotton86079-WO-PCT (DC60219PCT)

[0028] This disclosure further encompasses the following aspects.

[0024] Aspect 1: A method comprising washing a textile with a wash medium, where the wash medium comprises water, one or more surfactants and an oxygenated solvent having a vapor pressure of less than 0.1 mmHg at 20℃, wherein a weight ratio of the oxygenated solvent to the one or more surfactant is from 5:1 up to 30:1.

[0025] Aspect 2: The method of Aspect 1 wherein the oxygenated solvent comprises an alcohol, an ester, an ether, a ketone having at least 8 carbon atoms, or a mixture of two or more thereof.

[0026] Aspect 3: The method of Aspect 1 or 2 wherein the oxygenated solvent comprises a compound of the formula R1-O-(R2-O-)n R3 where R1 and R3 are independently an alkyl group of from 1 to 10 carbon atoms, or an alkyl substituted or unsubstituted phenyl group, or R¬1 can be H, R2 is a alkylene group of 2, 3, 4, 5 or 6 carbon atoms, and n is an integer of 1 to 8, provided the total number of carbon atoms in the compound is at least 8.

[0027] Aspect 4: The method of Aspect 3 wherein R2 and R3 have 2 or 3 carbon atoms and R1 is a linear or branched alkyl of 4 to 10 carbon atoms.

[0028] Aspect 5: The method of Aspect 3 wherein R2 and R3 have 3 carbon atoms and R1 is a branched alkyl of 5 to 8 carbon atoms.

[0029] Aspect 6: The method of Aspect 1 or 2 wherein the oxygenated solvent comprises a compound of the formula R4-(CO)-O-R5where R¬4 is an alkyl group of at least 5, at least 6, at least 7, or at least 8 up to 18, up to 16, up to 14 carbon atoms, and R5 is an alkyl group of 1, 2, 3, 4, or 5 up to 10 carbon atoms.

[0030] Aspect 7: The method of Aspect 1 or 2 wherein the oxygenated solvent comprises alcohol of the formula R6-OH where R6is a linear or branched alkyl group of from 1, from 8, from 9, or from 10, up to 20, up to 19, up to 18, up to 17, or up to 16 carbon atoms.

[0031] Aspect 8: The method of Aspect 1 or 2 wherein the oxygenated solvent comprises a ketone of the formula R7-(C=O)-R8where R7and R8are independently a linear or branched alkyl groups (optionally including hydroxy substitution) of from 1, from 2, from 3, from 4, or from 5 up to 18, up to 17, up to 16, up to 15, or up to 14 carbon atoms, where the total number of carbon atoms is no more than 20.

[0032] Aspect 9: The method of any one of the preceding Aspects wherein the weight ratio of the oxygenated solvent to the one or more surfactant is from 10:1 to 30:1.

[0033] Aspect 10: The method of any one of the preceding claims further comprising forming the wash medium by combining the oxygenated solvent, water, and a detergent86079-WO-PCT (DC60219PCT) which comprises the one or more surfactant at a water concentration of at least 90 weight percent based on total weight of the wash medium.

[0034] Aspect 11: The method of any one of Aspects 1-10 comprising combining water and a detergent, wherein the detergent comprises the one or more surfactants and the oxygenated solvent, a water concentration of at least 90 weight percent based on total weight of the wash medium.

[0035] Aspect 12: The method of Aspect 10 or 11 wherein the detergent further comprises further comprising one or more of an alkalinity source, a co-builder, a perfume agent, or a rheology modifier.

[0036] Aspect 13: The method of any one of the preceding Aspects wherein the textile bears a hydrophobic soil.

[0029] All ranges disclosed herein are inclusive of the endpoints, and the endpoints are independently combinable with each other (e.g., ranges of “up to 25 wt.%, or, more specifically, 5 wt.% to 20 wt.%”, is inclusive of the endpoints and all intermediate values of the ranges of “5 wt.% to 25 wt.%,” etc.). Moreover, stated upper and lower limits can be combined to form ranges (e.g., “at least 1 or at least 2 weight percent” and “up to 10 or 5 weight percent” can be combined as the ranges “1 to 10 weight percent”, or “1 to 5 weight percent” or “2 to 10 weight percent” or “2 to 5 weight percent”).

[0030] The disclosure may alternately comprise, consist of, or consist essentially of, any appropriate components herein disclosed. The disclosure may additionally, or alternatively, be formulated so as to be devoid, or substantially free, of any components, materials, ingredients, adjuvants or species used in the prior art compositions or that are otherwise not necessary to the achievement of the function and / or objectives of the present disclosure.

[0031] All cited patents, patent applications, and other references are incorporated herein by reference in their entirety. However, if a term in the present application contradicts or conflicts with a term in the incorporated reference, the term from the present application takes precedence over the conflicting term from the incorporated reference.

[0032] Unless specified to the contrary herein, all test standards are the most recent standard in effect as of the filing date of this application, or, if priority is claimed, the filing date of the earliest priority application in which the test standard appears.

Claims

86079-WO-PCT (DC60219PCT) What is claimed is:

1. A method comprising washing a textile with a wash medium, where the wash medium comprises water, one or more surfactants and an oxygenated solvent having a vapor pressure of less than 0.1 mmHg at 20℃, wherein a weight ratio of the oxygenated solvent to the one or more surfactant is from 5:1 up to 30:

1.

2. The method of claim 1 wherein the oxygenated solvent comprises an alcohol, an ester, an ether, a ketone having at least 8 carbon atoms, or a mixture of two or more thereof.

3. The method of claim 1 or 2 wherein the oxygenated solvent comprises a compound of the formula R1-O-(R2-O-)nR3where R1and R3are independently an alkyl group of from 1 to 10 carbon atoms, or an alkyl substituted or unsubstituted phenyl group, or R1can be H, R2is a alkylene group of 2, 3, 4, 5 or 6 carbon atoms, and n is an integer of 1 to 8, provided the total number of carbon atoms in the compound is at least 8.

4. The method of claim 3 wherein R2and R3have 2 or 3 carbon atoms and R1is a linear or branched alkyl of 4 to 10 carbon atoms.

5. The method of claim 3 wherein R2and R3have 3 carbon atoms and R1is a branched alkyl of 5 to 8 carbon atoms.

6. The method of claim 1 or 2 wherein the oxygenated solvent comprises a compound of the formula R4-(CO)-O-R5where R4is an alkyl group of 5 to 18 carbon atoms, and R5is an alkyl group of 1 to 10 carbon atoms provided the total number of carbon atoms in the compound is at least 8.

7. The method of claim 1 or 2 wherein the oxygenated solvent comprises a compound of the formula R6-OH where R6is a linear or branched alkyl group of from 1 to 20 carbon atoms.

8. The method of claim 1 or 2 wherein the oxygenated solvent comprises a ketone of the formula R7-(C=O)-R8where R7and R8are independently a linear or branched alkyl groups, optionally including hydroxy substitution, where the linear or branched alkyl groups have from 1 to 18 carbon atoms provided the total number of carbon atoms in the ketone is no more than 20.

9. The method of any one of the preceding claims wherein the weight ratio of the oxygenated solvent to the one or more surfactant is from 10:1 to 30:

1.

10. The method of any one of the preceding claims further comprising forming the wash medium by combining the oxygenated solvent, water, and a detergent which comprises86079-WO-PCT (DC60219PCT) the one or more surfactant at a water concentration of at least 90 weight percent based on total weight of the wash medium.

11. The method of any one of claim 1-10 comprising combining water and a detergent, wherein the detergent comprises the one or more surfactants and the oxygenated solvent, a water concentration of at least 90 weight percent based on total weight of the wash medium.

12. The method of claims 10 or 11 wherein the detergent further comprises further comprising one or more of an alkalinity source, a co-builder, a perfume agent, or a rheology modifier.

13. The method of any one of the preceding claims wherein the textile bears a hydrophobic soil.

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