KR102350283B1 - Acceleration of laundry drying - Google Patents

Abstract

It is an object of the present invention to shorten the drying time of washed and optionally spin-dried textiles. This object is achieved essentially by the use of carboxylic acids in the rinse step of the machine washing process.

Description

Acceleration of laundry drying

The present invention relates to a method for shortening the drying time of machine-washed textiles.

After the washing process, the used water adhering to the textile thus washed must be removed. Some of the attached water can be removed by the action of a mechanical force, known as spinning. However, not all textiles can withstand spin-drying, and not even spin-dried laundry items are generally dry ready for storage or reuse. For further drying, the wet, optionally spin-dried textile is usually caught on a clothesline or treated in a dryer. For the second mentioned variable, it is immediately apparent that the length of time required for the desired drying result is directly proportional to the energy consumption. When drying on a row, it is also desirable to keep the time required for this to be as short as possible.

Due to increasing environmental awareness, many consumers want to reduce their ecological footprint and use as little water and energy as possible. Economic savings due to reduced power and water consumption are also related thereto. The EU Directive on energy labeling of household washing machines (EU 1061/2010) specifies classes of spin-drying efficiency, ie residual moisture in laundry (efficiency classes A to G). Laundry with less residual moisture dries faster and consumes less energy when dried in an electric dryer, making dryer use more effective. The final spin cycle in the washing machine is used for the final removal of moisture from the laundry in preparation for drying, either on the line or in the dryer. For this purpose, the laundry is then dried by centrifugal force at a spin speed of 600 to 1,600 revolutions per minute. In addition to the rotation speed, the type of textile is also important to the degree of water removal. Although spin-drying quickly and strongly removes water from fabrics made of synthetic fibers, ordinary cotton fabrics have a high water retention capacity, even under spin conditions. To characterize the spin-drying efficiency (energy labeling according to EU 1061/2010), the moisture remaining after the spin cycle is thus used as reference. The highest grade A is given when the residual moisture content is less than 45%.

International patent application WO 2013/033508 A1 discloses a method for reducing the drying time of textiles by applying a linear polyether having _{terminal N(CH 2} CH(OH)CH ₂ Cl) _{2 groups to the textile during the washing process.}

Surprisingly, it has now been found that the choice of pH in the rinsing step of the machine-washing process affects the drying time of the laundry.

The present invention relates to the use of carboxylic acids in the rinse step of a machine-washing process for shortening the drying time of washed and optionally spin-dried textiles.

Shortening of the drying time is achieved by reducing the residual moisture content of the washed textile. Accordingly, the present invention also relates to the use of carboxylic acids for reducing the residual moisture content of machine-washed and in particular spin-dried textiles.

The present invention also relates to the steps of washing soiled textiles in an alkaline aqueous wash-agent-containing wash liquor, rinsing the textiles at least once with water, and an acidic aqueous post-treatment containing a carboxylic acid-containing laundry post-treatment agent A method for shortening the drying time of a machine-washed textile comprising the step of rinsing at least once with a liquid, and by rinsing at least once with an acidic aqueous post-treatment liquid containing a carboxylic-acid-containing laundry post-treatment agent A method for reducing the residual moisture content of machine-washed and in particular spin-dried textiles.

According to the present invention, it is important that the pH of the aqueous liquor in which the textile is located is low in the rinse step, preferably in the final rinse step if there is more than one step. Between washing and rinsing steps, the aqueous wash liquor is usually pumped out and discharged out of the washing machine. The portion of the aqueous solution that is still attached to the textile and which initially came into contact with the textile in the washing step is removed from the textile by the rinsing step. This occurs by rinsing the textile one or more times with water, and a post-treatment agent such as a softening agent may be added to the rinsing step or the aqueous rinse liquid used in either the rinsing step. This type of softener usually contains a cationic compound that absorbs onto the textile and makes it feel soft to the touch. Because of the greater stability of cationic textile softening active ingredients, softeners of this kind generally have an acidic pH. However, due to the type and amount of acid used therein, it does not induce an acidic pH in the rinse liquid into which the softening agent is introduced, but rather comes in contact with and still partially adheres to the textile, even when conventional softening agents are used. Due to the alkaline cleaning solution used, the rinse solution is likewise alkaline. In the context of the present invention, the amount of carboxylic acid such that the pH of the post-treatment liquid is in the range of less than pH 7, preferably in the range of pH 3 to pH 5, and in particular in the range of pH 4 to pH 5. used Laundry post-treatment preparations in the sense of the present invention may contain only carboxylic acids, in particular if they are liquid at room temperature, may contain carboxylic acids in the form of aqueous solutions, or if desired, customary for preparations of this kind and may contain other components that do not react in an undesirable way with the carboxylic acid essential for the present invention. Preferred laundry post-treatment formulations for use in the context of the present invention comprise 50 wt % to 95 wt %, in particular 80 wt % to 95 wt % of a carboxylic acid; Also preferred laundry post-treatment formulations contain water and are liquid and comprise from 10 wt % to 50 wt %, in particular from 20 wt % to 40 wt %, of a carboxylic acid. The time during which the acidic aqueous post-treatment liquid is in contact with the washed textile is preferably in the range from 1 minute to 60 minutes, in particular from 5 minutes to 20 minutes.

The carboxylic acid or a rinse formulation comprising the carboxylic acid may be introduced into a washing machine using a conventional flushing-in device supplied for emollient administration. However, in a preferred embodiment, the carboxylic acid is located in a reservoir connected by a supply line to the water-carrying unit of the washing machine, which may be located inside or outside the machine, and is administered to the rinse step in a program-controlled manner. do. Accordingly, the present invention also provides a soap suds container, a washing drum for accommodating the laundry to be washed, a water supply, characterized in that it comprises a reservoir for the carboxylic acid into which the carboxylic acid can be introduced into the washing process in a program-controlled manner. A washing machine comprising a system and a program controller. The carboxylic acid may be fed directly to the lather container or alternatively to another point in the fluid circuit of the machine, such as a circulation pump. A sufficient amount of the carboxylic acid may be contained in the reservoir for a plurality of applications, preferably from 2 to 50 applications. A laundry post-treatment formulation containing carboxylic acid may be contained in a storage container. Preferably the carboxylic acid in the reservoir is in the form of an aqueous solution, containing from 10 wt % to 50 wt %, in particular from 20 wt % to 40 wt % carboxylic acid.

A carboxylic acid is a compound containing at least one C(O)OH group. If desired, further functional groups may also be included, including, for example, hydroxy groups and amino groups. Preferred carboxylic acids are selected from the group comprising acetic acid, citric acid, succinic acid, malonic acid, tartaric acid, aminoacetic acid and mixtures thereof.

Preferred textiles to which the use according to the invention applies or to be used in the process according to the invention are those made of cellulose-containing material. The cellulose-containing material from which the textile to be treated is preferably made includes cotton, regenerated cellulosic fibers such as Modal or Lyocel, and cotton or regenerated cellulosic fibers and other materials commonly used in clothing such as polyester. and fabric blends with polyamides.

Unless otherwise indicated, all percentages recited in connection with the compositions described herein represent, in each case, wt % relative to the composition concerned.

With the application of the present invention, a reduced residual moisture in the laundry after a washing cycle, in particular after a spin cycle following the washing procedure, and thus an overall faster drying of the laundry has been achieved. By using a dryer in which the residual moisture of the laundry is sensed, less energy consumption is obtained due to the reduced moisture of the laundry being introduced into the dryer. The application of the present invention thus has advantages in terms of cost and time.

Laundry post-treatment preparations containing acids used according to the invention are used therewith or are applied in the process according to the invention, are solid or preferably liquid, and are also used in single doses (such as water-soluble or water-soluble packaged in a bag made of a dispersible material). Examples of specific laundry post-treatment agents are laundry care agents such as softeners. Laundry post-treatment preparations in the sense of the present invention may contain only carboxylic acids, in particular if they are liquid at room temperature, may contain carboxylic acids in the form of aqueous solutions, or, if desired, customary for preparations of this kind and other components that do not react in an undesirable manner with the carboxylic acids essential for the present invention.

In a preferred embodiment of the invention, the carboxylic acid is used together with at least one polymer of ethylene glycol or propylene glycol or a copolymer thereof; A preferred propylene glycol is 1,2-propylene glycol. polyethylene glycol having a number average molecular weight in the range from 300 g/mole to 35,000 g/mole, in particular from 4,000 g/mole to 6,000 g/mole and/or from 250 g/mole to 5,000 g/mole, in particular from 1,500 g/mole to 2,500 g/mole Polypropylene glycol having a number average molecular weight in the range of g/mol is preferably used. The weight ratio of propylene glycol to ethylene glycol in the copolymer is preferably in the range from 10:90 to 90:10, in particular from 60:40 to 80:20. The mentioned monomers may be present as blocks or statistically distributed in the copolymer. Copolymers in which a polyethylene glycol block is fused to a central polypropylene glycol block are preferred. In the copolymer, preferably the molar weight of the central polypropylene glycol block ranges from 1,000 g/mole to 5,000 g/mole, in particular from 1,500 g/mole to 2,700 g/mole, the moles of each polyethylene glycol block bound thereto. The weight ranges from 100 g/mole to 6,000 g/mole, in particular from 500 g/mole to 3,500 g/mole. Block copolymers of this kind are commercially available, for example, under the name Pluronic® PE. The content of polymers of ethylene glycol or propylene glycol or copolymers of said glycols in the laundry post-treatment preparations used according to the invention, if desired, is at most 50 wt %, preferably 1 wt % to 15 wt %, and in particular It may be 2 wt% to 10 wt%. Due to the combined use of carboxylic acids and polymers or copolymers of this kind, the residual moisture content of the laundry is reduced particularly significantly.

In one embodiment of the present invention, the formulation used as a post-treatment formulation may be designed as a laundry care formulation, in which case it comprises additional softener components, preferably betaine and/or cationic surfactant. Examples of textile-softening ingredients are quaternary ammonium compounds, cationic polymers and emulsifiers used in hair care formulations and also in formulations for the regeneration of textiles.

Suitable examples are the quaternary ammonium compounds of the formulas (I) and (II).

(I);

(II);

(I);

(II);

(in formula (I), R and R ¹ represent an acyclic alkyl functional group having 12 to 24 carbon atoms, R ² represents a saturated C ₁ to C ₄ alkyl or hydroxyalkyl functional group, R ³ is R , R ¹ or R ² , or represents an aromatic functional group. X ^- is a halide, methosulfate, methophosphate or phosphate ion, or a mixture thereof.) Examples of cationic compounds of formula (I) include didecyldimethylammonium chloride, ditallow dimethyl ammonium chloride or dihexadecylammonium chloride.

The compounds of formula (II) are known as esterquats. Ester quartz is characterized by its good biodegradability and is preferred in the context of the present invention. wherein R ⁴ represents an aliphatic alkyl functional group having 12 to 22 carbon atoms and having 0, 1, 2, or 3 double bonds; R ⁵ represents H, OH, or O(CO)R ⁷ , R ⁶ independently of R ⁵ represents H, OH, or O(CO)R ⁸ , wherein R ⁷ and R ⁸ are independent of each other , representing an aliphatic alkyl functional group having 12 to 22 carbon atoms and having 0, 1, 2, or 3 double bonds, respectively; m, n, and p each independently have a value of 1, 2, or 3; X ⁻ may be a halide, methosulfate, methophosphate or phosphate ion, or a mixture thereof. R ⁵ is a compound containing the group O (CO) R ⁷ and R ⁴ and R ⁷ as an alkyl functional group having 16 to 18 carbon atoms are preferred as. Particular preference is given to compounds in which R ^{6 also represents OH.} Examples of compounds of formula (III) include methyl-N-(2-hydroxyethyl)-N,N-di(tallowacyloxyethyl)ammonium methosulfate, bis-(palmitoyl)-ethyl hydroxyethyl methyl ammonium methosulfate or methyl-N,N-bis(acyloxyethyl)-N-(2-hydroxyethyl)ammonium methosulfate.

In a preferred embodiment, the formulation contains the emollient component in an amount of at most 35 wt %, preferably 0.1 to 25 wt %, particularly preferably 0.5 to 15 wt % and in particular 1 to 10 wt %, in each case relative to the total formulation do.

Solvents which can be used in particular in liquid formulations, together with water, are preferably water-miscible non-aqueous solvents. These solvents include lower alcohols such as ethanol, propanol, iso-propanol and isomeric butanol, glycerol, lower glycols such as ethylene and propylene glycol, and ethers which may be derived from the lower alcohols mentioned. In a preferred embodiment, the formulation contains at most 95 wt %, in particular between 25 wt % and 90 wt % of water, and at most 50 wt %, in particular between 0.1 wt % and 15 wt % of a non-aqueous solvent.

In addition to the above-mentioned ingredients, the formulation may contain a pearlescent agent. Pearling agents give the textile an additional shine. As pearling agents, for example, the following may be used: alkylene glycol esters, fatty acid alkanolamides, partial glycerides, polyvalent, optionally hydroxy-substituted carboxylic acids with fatty alcohols of 6 to 22 carbon atoms. ester; fatty substances such as fatty alcohols having at least 24 carbon atoms in total, fatty ketones, fatty aldehydes, fatty ethers and fatty carbonates; Ring-opening products of olefin epoxides having 12 to 22 carbon atoms and fatty alcohols having 12 to 22 carbon atoms, fatty acids and/or polyols having 2 to 15 carbon atoms and 2 to 10 hydroxyl groups , and mixtures thereof.

Additionally, liquid formulations may also contain thickening agents. With regard to increasing consumer acceptance, the use of thickening agents, in particular gel-type formulations, proves their worth. Examples of naturally derived polymers that can be used as thickening agents include agar-agar, carrageenan, gum tragacanth, gum arabic, alginate, pectin, polyose, guarbun, carob tree flour, starch, dextrin, gelatin. and casein, cellulose derivatives such as carboxymethyl cellulose, hydroxyethyl and hydroxypropyl cellulose, and polymeric polysaccharide thickening agents such as xanthan gum; In addition, fully synthetic polymers such as polyacrylic and polymethacrylic compounds, vinyl polymers, polycarboxylic acids, polyethers, polyimines, polyamides and polyurethanes may also be suitable. In a preferred embodiment, the formulations used according to the invention contain thickeners, in each case relative to the entire formulation, preferably at most 10 wt %, particularly preferably at most 5 wt %, and in particular 0.1 wt % to 1 wt % contains the amount of

The formulations may additionally contain odor absorbers and/or dye transfer inhibitors. In a preferred embodiment, the formulation optionally contains 0.1 wt% to 2 wt%, preferably 0.2 wt% to 1 wt% of a dye transfer inhibitor, in a preferred embodiment of the invention vinylpyrrolidone, vinylimi Dazole, a polymer of vinyl pyridine-N-oxide or a copolymer thereof. For example, polyvinylpyrrolidone having a molar weight of 15,000 to 50,000, polyvinylpyrrolidone having a molar weight of greater than 1,000,000, in particular 1,500,000 to 4,000,000, N-vinylimidazole/N-vinylpyrrolidone public Copolymers, polyvinyl oxazolidone, copolymers based on vinyl monomers and carboxylic acid amides, pyrrolidone-group-containing polyesters and polyamides, grafted polyamidoamines, polyamine-N-oxide polymers, polyvinyl alcohols and acrylics Copolymers based on amido alkenyl sulfonic acids are suitable. Vinylpyrrolidone and vinylimida having a molar ratio of 5: 1 to 1:1 and an average weight-average molar mass in the range from 5,000 g/mole to 50,000 g/mole, in particular from 10,000 g/mole to 20,000 g/mole. Copolymers of sols are preferred.

Preferred deodorizing substances are metal salts, excluding alkali metal salts, of unbranched or branched, unsaturated or saturated, mono- or polyhydroxylated fatty acids and/or resin acids having at least 16 carbon atoms and any mixture thereof. A particularly preferred unbranched or branched, unsaturated or saturated, mono- or polyhydroxylated fatty acid having at least 16 carbon atoms is ricinoleic acid. A particularly preferred resin acid is abietic acid. Preferred metals are transition metals and lanthanides, in particular transition metals of groups VIIIA, IB and IIB of the periodic table as well as lanthanum, cerium and neodymium, particularly preferably cobalt, nickel, copper and zinc, most preferably zinc . Although cobalt, nickel and copper salts and zinc salts are similarly effective, zinc salts are preferred for toxicological reasons. At least one metal salt of ricinoleic acid and/or abietic acid, preferably zinc ricinoleate and/or abietic acid, in particular zinc ricinoleate, can advantageously, and therefore particularly preferably be used as deodorizing material. . Cyclodextrins and mixtures of cyclodextrins with the above-mentioned metal salts in a weight ratio of preferably 1 : 10 to 10 : 1, particularly preferably 1 : 5 to 5 : 1 and especially 1 : 3 to 3 : 1, likewise themselves proved as further suitable deodorizing substances in the sense of the present invention. In this case, the term "cyclodextrin" refers to all known cyclodextrins, such as unsubstituted cyclodextrins having 6 to 12 glucose units of both, in particular alpha-, beta- and gamma-cyclodextrins and also mixtures thereof, and / or derivatives thereof and / or mixtures thereof.

Solvents, especially water, containing liquid or paste formulations in the form of conventional solvents are generally prepared by simply mixing the substances or ingredients which may be added to an automatic mixer as a solution.

In a particularly preferred embodiment, the formulation, preferably in liquid form, is provided as a portion of a fully or partially water-soluble package. Segmentation simplifies dosing accuracy to the user. In this embodiment, the water content of the post-treatment formulation is preferably less than 15 wt % and in particular in the range from 1 wt % to 12 wt %.

The formulation may be packaged, for example, in a film bag. Bag packaging made of water-soluble film makes it unnecessary for the user to open the packaging. In this way, individual potions that are measured for one wash cycle can conveniently be dosed by placing the bag directly into the washing machine or by placing the bag in a specific amount of water, such as a bucket, bowl, or sink. . When a certain temperature is achieved, the film bag surrounding the cleaning potion dissolves without residue.

There are numerous methods in the prior art for preparing water-soluble cleaning agent parts, which are in principle also suitable in the context of the present invention. The best known method involves tubular films with horizontal and vertical sealing seams. The thermoforming method (dip-drawing method) is also suitable for making film bags or dimensionally stable portions of cleaning agents. However, the water-soluble packaging need not necessarily consist of a film material and may be, for example, a dimensionally stable container obtainable by an injection molding method.

Methods for preparing water-soluble capsules from polyvinyl alcohol or gelatin which in principle give the possibility of providing capsules with a high degree of filling are also known. This method is based on a water-soluble polymer introduced into a molding cavity. The capsules are filled and sealed simultaneously or in successive steps, the capsules being filled in the latter case through a small opening. In this case, the capsules are filled, for example, by means of filling wedges which rotate in opposite directions and are arranged on two drums having a hemispherical shell. The drum guides a polymer tape covering the hemispherical shell cavity. Where the polymer tape on one drum meets the polymer tape on the opposite drum, sealing occurs. With this process, the filling material is injected into the capsule being formed, and the injection pressure of the filling liquid presses the polymer tape into the hemispherical cavity. The method for preparing water-soluble capsules, which is first filled and then sealed, is based on the “Bottle-Pack®” method. The tubular preform is here guided into a two-part cavity. The cavity is closed, the lower tube portion is sealed, and then the tube is inflated, filled and then sealed to form a capsule shape within the cavity.

The shell material used for preparing the water-soluble portion is preferably a water-soluble thermoplastic polymer, particularly preferably polyvinyl alcohol (optionally partially acetalized), polyvinyl alcohol copolymer, polyvinylpyrrolidone , polyethylene oxide, gelatin, cellulose and its derivatives, starch and its derivatives, blends and encapsulants, inorganic salts and mixtures of the materials mentioned, preferably hydroxypropyl methylcellulose and/or polyvinyl alcohol blends. Polyvinyl alcohol, for example, commercially available under the trade name parent wiol ^® (Mowiol ^®) (Clariant (Clariant)). In the context of the present invention, particularly suitable polyvinyl alcohols are, for example, Mowiol ^® 3-83, Mowiol ^® 4-88, Mowiol ^® 5-88, Mowiol ^® 8-88 and Clariant L648. The water-soluble thermoplastic used to make the part may additionally optionally be an acrylic acid-containing polymer, polyacrylamide, oxazoline polymer, polystyrene sulfonate, polyurethane, polyester, polyether and/or of the above-mentioned polymers. a polymer selected from the group comprising mixtures. The water-soluble thermoplastic resin used comprises polyvinyl alcohol having a degree of hydrolysis of 70 to 100 mol %, preferably 80 to 90 mol %, particularly preferably 81 to 89 mol % and especially 82 to 88 mol % If so, it is preferable The water-soluble thermoplastic resin used has a molecular weight of 10,000 to 100,000 g mol ^-1 , preferably 11,000 to 90,000 g mol ^-1 , particularly preferably 12,000 to 80,000 g mol ^-1 , and especially 13,000 to 70,000 g mol ^-1 If it contains polyvinyl alcohol in the range of, it is more preferable. If the thermoplastic resin is present in each case in an amount of at least 50 wt %, preferably at least 70 wt %, particularly preferably at least 80 wt %, and in particular at least 90 wt %, relative to the weight of the water-soluble thermoplastic polymer, further more preferably.

Example

Example 1

The LG F1494QD washing machine was loaded with about 5 kg of washing load according to DIN EN 60456, which, as a change to the norm, was simply filled without stacking the load. In short wash cycles (program run time of approximately 45 minutes), washes were performed using a commercially available gel-type universal wash formulation (dose of 73 ml, added to the main wash cycle via the dosing drawer). The additives listed in the following table were fed through the softener dosing drawer; The time at which the dosing was performed depends on the machine, but it is certainly done at the beginning of the final rinse cycle with water supply. The laundry was weighed dry prior to the wash cycle. After the end of the washing stage, the laundry after spinning was weighed to a wet state and the residual moisture was calculated.

Table 1

It can be seen that the use of softening agents and also alkalization of the laundry with caustic soda do not contribute to increasing water removal from the laundry during spinning. Water removal is increased by the use of acetic acid.

Example 2

The procedure described in Example 1 was repeated using the additives listed in the following table.

Table 2

Example 3

The procedure described in Example 1 was repeated using a laundry load consisting of terrycloth and huckaback towels in a weight ratio of 1:1, and the additives listed in the following table.

Table 3

Example 4

The procedure described in Example 1 was repeated with the conventional cotton program (program run time of approximately 180-200 minutes) using the additives listed in the following table.

Table 4

Example 5

The procedure described in Example 1 was repeated using the additives listed in the following table.

Table 5

Example 6

The procedure described in Example 1 was repeated using the additives listed in the following table.

Table 6

Claims (13)

A method of using carboxylic acid in the rinsing step of a machine-washing process to shorten the drying time of washed and optionally spin-dried textiles,
The method comprises rinsing the textile at least once with an acidic aqueous post-treatment liquor containing a carboxylic acid-containing laundry post-treatment agent, wherein the pH of the post-treatment liquor is in a range less than pH 7 or pH 3 A method of using a carboxylic acid, wherein an amount of the carboxylic acid is used to result in a value in the range of from to pH 5. A method of using a carboxylic acid to reduce the residual moisture content of a machine-washed or machine-washed and spin-dried textile,
The method comprises rinsing the textile at least once with an acidic aqueous post-treatment liquor containing a carboxylic acid-containing laundry post-treatment agent, wherein the pH of the post-treatment liquor is in a range less than pH 7 or pH 3 A method of using a carboxylic acid, wherein an amount of the carboxylic acid is used to result in a value in the range of from to pH 5. washing the soiled textile in an alkaline aqueous wash-agent-containing wash liquor, rinsing the textile at least once with water, and at least treating the textile with an acidic aqueous post-treatment liquor containing a carboxylic acid-containing laundry post-treatment agent A method for shortening the drying time of machine-washed textiles comprising the step of rinsing once,
A method for shortening the drying time of a machine-washed textile, wherein an amount of carboxylic acid is used such that the pH of the post-treatment liquid is in the range of less than pH 7 or a value in the range of pH 3 to pH 5. for reducing the residual moisture content of a machine-washed or machine-washed and spin-dried textile by rinsing the textile at least once with an acidic aqueous post-treatment liquor containing a carboxylic acid-containing laundry post-treatment agent; is a method,
Residual moisture of a machine-washed or machine-washed and spin-dried textile, wherein an amount of carboxylic acid is used such that the pH of the post-treatment liquor is in the range of less than pH 7 or in the range of pH 3 to pH 5 A method for reducing the content. 3. The carboxylic acid according to claim 1 or 2, wherein the carboxylic acid contains 50 wt% to 95 wt% or 80 wt% to 95 wt% of a carboxylic acid, or contains water and is liquid and contains 10 wt% to 50 wt% of a carboxylic acid, and A process for using carboxylic acids, characterized in that they are used as constituents of rinse formulations containing up to 50 wt % or 1 wt % to 15 wt % of ethylene glycol, polymers of propylene glycol or copolymers thereof. 4. The carboxylic acid according to claim 3, wherein the carboxylic acid contains 50 wt% to 95 wt% or 80 wt% to 95 wt% of a carboxylic acid, or contains water and is liquid and contains 10 wt% to 50 wt% of a carboxylic acid, and up to 50 wt% or 1 wt % to 15 wt % of ethylene glycol, a polymer of propylene glycol or a copolymer thereof as a component of a rinse formulation. 5. The carboxylic acid according to claim 4, wherein the carboxylic acid contains 50 wt% to 95 wt% or 80 wt% to 95 wt% of a carboxylic acid, or contains water and is liquid and contains 10 wt% to 50 wt% of a carboxylic acid, and up to 50 wt% or a machine-washed or machine-washed and spin-dried textile, characterized in that it is used as a component of a rinse formulation containing 1 wt % to 15 wt % of ethylene glycol, a polymer of propylene glycol or a copolymer thereof. A method for reducing the residual moisture content of 3. Using carboxylic acid according to claim 1 or 2, characterized in that the time during which the acidic aqueous post-treatment liquid comes into contact with the washed textile ranges from 1 minute to 60 minutes or from 5 minutes to 20 minutes. Way. Drying time of the machine-washed textile according to claim 3, characterized in that the time during which the acidic aqueous post-treatment liquid is in contact with the washed textile ranges from 1 minute to 60 minutes or from 5 minutes to 20 minutes. method to shorten it. Machine-washed or machine-washed according to claim 4, characterized in that the time during which the acidic aqueous post-treatment liquid is in contact with the washed textile ranges from 1 minute to 60 minutes or from 5 minutes to 20 minutes. A method for reducing the residual moisture content of a fabricated and spin-dried textile. Method according to claim 1 or 2, characterized in that the carboxylic acid is selected from the group comprising acetic acid, citric acid, succinic acid, malonic acid, tartaric acid, aminoacetic acid and mixtures thereof. Method according to claim 3, characterized in that the carboxylic acid is selected from the group comprising acetic acid, citric acid, succinic acid, malonic acid, tartaric acid, aminoacetic acid and mixtures thereof. Machine-washed or machine-washed and spin-dried textile according to claim 4, characterized in that the carboxylic acid is selected from the group comprising acetic acid, citric acid, succinic acid, malonic acid, tartaric acid, aminoacetic acid and mixtures thereof. A method for reducing the residual moisture content of