KR100493999B1 - Laundry Detergent Composition - Google Patents

Abstract

The present invention relates to a nonionic surfactant (A) of Formula 1, at least one cationic surfactant (B) of Formula 2, wherein the total iodine value of the cationic surfactant is 40 to 100, solvent of Formula 3 and Formula 4 At least one poorly water-soluble solvent (C) selected from a solvent of, and at least one water-soluble solvent (D) selected from a solvent of formula 5 and a solvent of formula 6 It relates to a laundry detergent composition.

Description

Laundry Detergent Composition

The present invention relates to a liquid detergent for laundry that, when applied in an undiluted form, is excellent in cleanability even with steamed oil and enables practical washing even in immersion washing. More particularly, the present invention relates to a laundry detergent composition which exhibits practical detergency and form retention ability for silk fabrics, woolen fabrics or clothing which requires careful handling when immersed, even when slight staining occurs. will be. In particular, the present invention is applied to an immersion laundry detergent composition which is remarkably high in oil cleaning property (which is hardly removable by water washing) when applied in an undiluted form, and excellent in touch compared to conventional laundry detergent compositions. It is about.

In general, the term "immersion washing" refers to priming washing which is immersed in a detergent solution which is enhanced by the addition of enzyme before washing in a washing machine or by hand washing. Since the stain cannot be removed from the laundry without being immersed in the detergent solution for a long time (overnight), the silk or woolen garment may be immersed for a long time, causing shrinkage. As used herein, the term "immersion laundering" means, on the one hand, laundering a laundry in a detergent for a short time of 10 to 30 minutes and such a short soaking laundering is a garment which requires careful handling, for example, It can be accompanied by the advantages of no side effects such as shrinkage of silk or woolen garments, and can promote the removal of stains and improve the feel of laundry.

Clothing washing at home is usually washed with detergents consisting primarily of anionic surfactants or nonionic surfactants and then softened with a softener consisting primarily of cationic surfactants to impart good hand and antistatic properties to the clothes. . This conventional washing method is inconvenient because it requires two separate steps, washing and softening. Washing methods using an integrated laundry detergent composition in which two separate operations above are performed at the same time are described in Japanese Patent Application Laid-Open No. 47-4750 and Japanese Patent Laid-Open No. 57-126896. .

The above monolithic laundry composition consists of a cationic surfactant in the form of a monoalkyl or dialkyl containing, as a main component, a nonionic surfactant or a semipolar surfactant and a long chain saturated group in the molecule as a softener component. These systems clear (transparent) at room temperature for a short time after introduction. However, after prolonged storage, the insoluble material is separated and becomes cloudy (cloudy) or precipitates at low temperatures, which significantly reduces the value of the product. As a result, the unitary laundry composition has a problem in stability, even though the washability and feel are appropriate, it is difficult to industrially manufacture.

Japanese Unexamined Patent Application Publication No. 4-4298, Japanese Unexamined Patent Application Publication No. 4-153300, US Patent No. 4,222,905, US Patent No. 4,259,217, US Patent No. 4,239,659, and the like have a cation as a basic component. A clear, neutral liquid detergent is described that contains an acidic surfactant and a nonionic surfactant. That is, in the above patent documents, a transparent neutral liquid detergent having proper cleaning property is described as an integrated detergent but does not impair excellent touch and excellent storage safety. Even when the above detergents are used, garments which require careful handling, in particular silk or woolen garments, are washed in the usual way of washing, more specifically in a gentle water stream, washed in a washing machine, hand kneaded or crushed. Later, they shrink or lose their original shape, reducing the value of clothing. As the washing method for preventing shrinkage or maintaining the original shape of the garment, an immersion washing method is known in addition to the above method. However, the detergent has insufficient cleaning property and poor removal of partial stains. In addition, there is a need for washing methods and detergents excellent in touch, shape retention and washability after washing. Therefore, Japanese Patent Laid-Open No. 7-54264, Japanese Patent Laid-Open No. 6-313193, Japanese Patent Laid-Open No. 8-48993, Japanese Patent Laid-Open No. 8-48993 -48994 and Japanese Unexamined Patent Publication (Kokai) No. 8-48995 disclose a method of incorporating a water-soluble solvent into a laundry detergent composition to easily remove stray grease that is difficult to remove by washing in a water system. .

In recent years, dry cleaning has been a serious environmental problem because solvents such as chlorofluorocarbons (such as Freon), perchloroethylene (such as tetrachloroethylene) or petroleum that are adversely affecting the environment have been used. And dry cleaning is also of interest because of insufficient water soluble stain removal ability. Clothing that requires careful handling, especially sloppy grease in silk or woolen garments, can be washed in a conventional manner [more specifically, in a mild water system using a washing machine, hand-washing or crushing. Since it is not removed, it must be dry cleaned to remove it. Therefore, JP-A-5-51598 reports that a novel dry cleaning solvent using a glycol ether solvent improves the environmental safety and the ability to remove water-soluble stains. However, even when the solvent is used, the ability to remove water-soluble stains is insufficient as compared to washing in a water system, and this problem is not sufficiently overcome even in the case of dry cleaning using a solvent.

Under these circumstances, garments to which conventional washing methods are not suitable, such as garments that require careful handling, in particular silk or woolen garments, are inevitably washed in a manner that places importance on water soluble stains or streaks of oil.

Accordingly, there is a need for a laundry detergent composition that is equal to or superior to conventional detergents for immersion laundry, and promotes the removal of steamed oils, which had to be removed by dry cleaning, and is effective in removing water-soluble stains and oils. .

The object of the present invention is to give the laundry with excellent flexibility and feel after washing, to remove the stain easily by applying only to the stained portion in an undiluted form, low viscosity, stable at room temperature and low temperature, careful handling It is an object of the present invention to provide a detergent composition for immersion laundry having practical detergency and form retaining ability for garments, especially silk or woolen garments.

Thus, according to the present invention, the nonionic surfactant (A) of formula (1), at least one cationic surfactant (B) of formula (2), wherein the total iodine value of the cationic surfactant is from 40 to 100; At least one sparingly water-soluble solvent (C) selected from a solvent and a solvent of formula (4), and at least one water-soluble solvent (D) selected from solvents of formulas (5) and (6) There is provided a laundry detergent composition comprising.

[Formula 1]

R ₁ O (CH ₂ CH ₂ O) _n H

[Formula 2]

[Formula 3]

R ₆ OH

[Formula 4]

R ₇ (OR ₈ ) _m OH

[Formula 5]

R ₉ OH

[Formula 6]

R ₁₀ (OR ₁₁ ) ₁ OH

In the above formula 1 to 6,

R ₁ represents a straight or branched C _10-22 alkyl group or alkenyl group, or an alkylphenyl group containing a C _6-12 alkyl group,

R ₂ to R ₅ are independent of each other, two of which represent C _12-24 alkyl groups or alkenyl groups, the other two represent methyl, ethyl, polyoxyethylene or polyoxypropylene groups,

R ₆ represents a straight or branched C _6-12 alkyl group or an alkylphenyl group containing a straight or branched C _5-l2 alkyl group,

R ₇ represents a straight or branched C _5-12 alkyl group or an alkylphenyl group containing a straight or branched C _5-l2 alkyl group,

R ₈ represents a C _2-5 alkylene group,

R ₉ represents a straight or branched C _1-5 alkyl group or benzyl group,

R ₁₀ represents a straight or branched C _1-4 alkyl group or alkylene group, phenyl group, benzyl group or hydrogen atom,

R ₁₁ represents a straight or branched C _2-5 alkylene group,

l and m are each 1 to 3,

n is from 5 to 15

X represents a halogen atom, CH ₃ SO ₄ or C ₂ H ₅ SO ₄ .

The compositions of the present invention may further contain amidobetaine amphoteric surfactants (E) and / or salts (F) having a water solubility of at least 10% by weight.

Nonionic surfactants of formula (1) that may be used in the present invention are nonionic surfactants in the form of ethylene oxide addition. Examples thereof include polyoxyethylene alkyl or alkenyl ethers containing C _10-22 alkyl groups or alkenyl groups, each containing 5 to 15 mol of ethylene oxide, and polyoxyethylene alkylphenyl containing C _6-12 alkyl groups. Ether. These may be used alone or as a mixture. The nonionic surfactant is added in an amount of preferably 10 to 50% by weight, more preferably 15 to 40% by weight, based on the total amount of the composition. When the added amount of the above surfactant is less than 10% by weight, not only the cleaning property is weak, but also the stability at low temperature is lowered. On the other hand, when the added amount exceeds 50% by weight, solubility at room temperature is poor and the resulting composition tends to form a gel. The upper limit of the amount of nonionic surfactant added is preferably 30% by weight based on the total amount of the composition.

As the cationic surfactant of formula (2), one or more di (long chain alkyl) quaternary ammonium salts can be used in the present invention. The total iodine number of the cationic surfactant is 40 to 100. The di (long chain alkyl) may be an alkyl group or alkenyl group having 12 to 24 carbon atoms, preferably 16 to 20 carbon atoms. If the long chain alkyl has less than 12 carbon atoms, the resulting composition imparts insufficient flexibility and feel to the fabric after washing. On the other hand, when the carbon number exceeds 24, the resulting composition cannot form a transparent solution at low temperature. In some cases, the two long chain alkyl groups may be the same or different.

The other two are any two alkyl groups, for example methyl, ethyl, polyoxyethylene or polyoxypropylene groups, the number of moles added being from 1 to 5 mol, preferably a methyl group. X represents one of halogen atoms, such as chlorine, bromine or iodine, CH ₃ SO ₄ and C ₂ H ₅ SO ₄ , preferably chlorine.

Preferred examples of the di (long chain alkyl) quaternary ammonium salts include dioleyldimethylammonium chloride and dialkyl dimethylammonium chloride, with particular preference being given to unsaturated alkyl group mixtures derived from oleic acid, tallow fatty acids and / or soybean oil fatty acids. Preferably dioleyl dimethylammonium chloride. When used in combination, the di (long chain alkyl) quaternary ammonium salts containing saturated alkyl groups such as distearyl dimethylammonium chloride may contain di (long chain alkyl) 4 containing unsaturated alkyl groups such as dioleyldimethyl ammonium chloride. May be added to the quaternary ammonium salt.

Cationic surfactants of the present invention have an iodine number of 40 to 100, preferably 60 to 90. If two or more di (long chain alkyl) quaternary ammonium salts are used in combination, the total iodine number should be adjusted to fall within the above range. If the iodine value is less than 40, the stability at low temperatures is impaired. On the other hand, storage stability is impaired when the iodine number exceeds 100.

The at least one cationic surfactant is added in a total amount of preferably 1 to 15% by weight, more preferably 2 to 10% by weight, based on the total amount of the composition. If the amount of the above surfactant is less than 1% by weight, no flexibility is given to the fabric after washing. On the other hand, when it exceeds 15 weight%, stability at low temperature will be impaired, and deterioration of washing property will be caused. The upper limit of the addition amount of the cationic surfactant is preferably 7% by weight based on the total amount of the composition.

The poorly water-soluble solvents usable in the present invention are one or more solvents selected from poorly water-soluble alcohol solvents of formula 3 and poorly water-soluble glycol ether solvents of formula 4.

Formula 3

R ₆ OH

Formula 4

R ₇ (OR ₈ ) _m OH

In Chemical Formulas 3 and 4 above,

R ₆ represents a straight or branched C _6-12 alkyl group or an alkylphenyl group containing a straight or branched C _5-l2 alkyl group,

R ₇ represents a straight or branched C _5-l2 alkyl group or an alkylphenyl group containing a straight or branched C _5-l2 alkyl group,

R ₈ represents a C _2-5 alkylene group

m is 1-3.

Specific examples of poorly water-soluble alcohol solvents include 1-hexanol, 2-hexanol, 3-hexanol, 2-methyl-1-pentanol, 4-methyl-2-pentanol, 2-ethyl-1-butanol, 1 -Heptanol, 2-heptanol, 3-heptanol, 1-octanol, 2-octanol, 2-ethylhexanol, 1-nonal, 3,5,5-trimethyl-1-nucleool and 1-decane Contains the ol. Specific examples of poorly water soluble glycol ether solvents include ethylene glycol monohexyl ether and diethylene glycol mono-2-ethylhexyl ether. Of these, poorly water-soluble glycol ether solvents are preferred, and diethylene glycol mono-2-ethylhexyl ether and diethylene glycol monohexyl ether are particularly preferred. The above solvent is preferably added in an amount of 1 to 40% by weight, more preferably 1 to 20% by weight, especially 5 to 20% by weight, based on the total amount of the composition. If the added amount is less than 1% by weight, the oil removal ability is not sufficient. On the other hand, if it exceeds 40% by weight, there arises a problem that the storage stability of the resulting composition is poor.

The water soluble solvents usable in the present invention are one or more solvents selected from water soluble alcohol solvents of formula 5 and water soluble glycol ether solvents of formula 6.

Formula 5

R ₉ OH

Formula 6

R ₁₀ (OR ₁₁ ) ₁ OH

In Formulas 5 and 6 above,

R ₉ represents a straight or branched C _1-5 alkyl group or benzyl group

R ₁₀ represents a straight or branched C _1-4 alkyl group or alkylene group, phenyl group, benzyl group or hydrogen atom,

R ₁₁ represents a straight or branched C _2-5 alkylene group

1 is 1 to 3.

Ethanol, methanol or propanol may be used as the water-soluble alcohol solvent, ethylene glycol or diethylene glycol may be used as the water-soluble ethylene glycol solvent, and propane diol or butane diol may be used as the water-soluble diol solvent. Specific examples of water-soluble glycol ether solvents include ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, isopropylene glycol monomethyl ether, isopropylene glycol monoethyl ether, 3-methoxybutanol and 3-methyl 3-methoxybutanol. Of these, water-soluble glycol ether solvents are preferred, with isopropylene glycol monomethyl ether, isopropylene glycol monoethyl ether, 3-methoxybutanol and 3-methyl-3-methoxybutanol particularly preferred. The at least one water soluble solvent is added in an amount of preferably 0.1 to 30% by weight, more preferably 0.1 to 20% by weight, in particular 2 to 20% by weight, based on the total amount of the composition. Outside the above range, storage stability is compromised. The upper limit of the addition amount of the water-soluble solvent is preferably 15% by weight based on the total amount of the composition.

Examples of aminobetaine amphoteric surfactants usable in the present invention include stearylamidopropyldimethyl aminoacetic acid betaine and coconut oil fatty acid amidopropyldimethyl aminosulfobetaine, among which coconut oil fatty acid amidopropyldimethyl Amino acetic acid betaine is particularly preferred. The amphoteric surfactant is preferably added in an amount of 0.01 to 2.0% by weight, in particular 0.1 to 1.0% by weight, based on the total amount of the composition. The addition of amidobetaine amphoteric surfactants in the above range further improves the finish of the garment.

As a salt having a water solubility of 10% by weight or more in a standard state (25 ° C) and usable in the present invention, either a salt with an inorganic acid or an organic acid may be used. Salts can be used in salt form or prepared from acids and alkalis during the preparation of the composition. Examples of salts with inorganic acids include chlorides with sodium, potassium or ammonium, sulfates, nitrates, carbonates, bicarbonates and borate salts. Examples of salts with organic acids are citrate, benzoate, succinate and lactate. Preferred examples of inorganic acid salts include sodium chloride and sodium sulfate and examples of organic acid salts include sodium citrate. The salts exemplified above can be used alone or in mixtures. The salt is preferably added in an amount of up to 5.0% by weight, particularly preferably up to 2.0% by weight. It is preferable from the viewpoint of stability that the addition amount is 5.0% by weight or less. The minimum of the addition amount of the salt whose water solubility is 10 weight% or more is based on the total amount of a composition, Preferably it is 0.01 weight%.

The compositions of the present invention can be prepared by methods known per se in the art. The composition can be used for various stains of clothing or bathtubs. The composition is suitable for use as a liquid detergent for clothing, in particular a low viscosity (5-500 cps: Brookfield viscometer; spindle # 2) liquid detergent for immersion washing.

In the present invention, as well as not impairing the advantages of the present invention, conventionally known water-soluble polymers such as polyvinyl alcohol, carboxymethyl cellulose, hydroxypropyl methyl cellulose or hydroxybutyl cellulose, anionic surfactants, Semipolar surfactants such as amine oxides, perfumes, enzymes such as proteolytic enzymes, lipolytic enzymes, amylolytic enzymes, lysokinases, etc., fungicides, pigments and / or dyes may be added as necessary.

Example

The invention will be explained in more detail through the following examples. However, the present invention should not be construed as limited by these examples, and all percentages are by weight unless otherwise indicated.

The compositions of the examples (and comparative examples) shown in Table 1 were prepared by methods known per se in the art, and they were evaluated by stability tests, flexibility tests, undiluted solution application tests, and immersion laundry cleanability tests. The evaluation method is described below. Tap water is used in each test.

<Evaluation method>

1. Stability test

The compositions of Examples and Comparative Examples are filled into 100 ml screw pipes respectively. The compositions are allowed to stand for one month in a constant temperature bath maintained at -5 ° C, 0 ° C, 5 ° C and 25 ° C. The external appearance is visually determined.

Evaluation is carried out according to the following criteria and judges that the composition evaluated as A is good.

A: Transparent and fluid.

B: translucent and fluid.

C: Cloudy, crystals precipitate or solidify.

2. Flexibility test

In each of the laundry compositions of the Examples and Comparative Examples (30 ° C., 500 ml of 0.1% aqueous solution), 20 cm × 20 cm of silk (100% silk plain) was immersed for 10 minutes, shaken twice, washed twice, and Five washing operations are performed, including dehydration and air drying for seconds. After five runs, a test cloth is prepared by ironing the cloth at low temperature. Sensory organ evaluation assesses the fabric's flexibility as compared to the micro-tuck fabric.

The evaluation criteria are as follows, and the A or B grade is the standard.

A: More flexible than micro-tuck silk fabric.

B: More flexible than micro-tuck silk fabric.

C: Slightly harder than micro-tuck silk fabric.

D: Harder than micro-tuck silk fabric.

3. Test for Cleanability When Applying Undiluted Solution

The compositions of the Examples and Comparative Examples are applied in an amount of 1 ml each to 5 cloths with lard stains and 5 cloths with lipstick stains, each 5 cm × 5 cm in size, and they are allowed to stand for 15 minutes. . Each of the fabrics thus treated is immersed in 10 L of water for immersion washing. Regarding the detergency of the lard stained fabric, the reflectances of the artificially stained fabric and the white fabric (control) before and after washing were measured with a color difference meter (trade name: "ZE-2000", manufactured by Nippon Denshoku Kogyo). After washing, the washability of the lard stained cloth is calculated according to the following equation (1). Incidentally, detergency is expressed as an average value for five cloths, and a composition having a detergency of 60% or more is determined to be effective.

[Equation 1]

Detergency (%) = [R _w -R _s ] / [R _o -R _s ] × 100

In Equation 1 above,

R _o represents the surface reflectance of a white cloth,

R _s represents the surface reflectance of the stained cloth before washing,

R _w represents the surface reflectance of the stained cloth after washing.

On the other hand, the cleanliness of the lipstick stained cloth was evaluated by five monitors. Set the stain state before washing to 5 and the original white cloth to 1. The cleanliness of the composition accordingly is evaluated as an average for five cloths. Evaluation criteria are as follows, and compositions evaluated below 2.5 are considered to be below standards.

1. Lipstick stain is completely removed.

2: Some lipstick smudges remain (contour is noticeable).

3: Lipstick stains remain.

4: Most of the lipstick stain remains.

5: Lipstick stains are the same as before washing.

Prepare lard stained cloth and lipstick stained cloth and wash as follows.

<Manufacturing Method of Lipstick Stained Cloth>

Commercially available lipstick is applied in an amount of 25 mg per cloth to an unbleached muslin cloth measuring 5 cm by 5 cm.

<Washing condition>

Laundry time (immersion time): 15 minutes

Washing temperature: 25 ℃

Type of cleaning: cleaning by shaking

Dewatering: Dehydrate the cloth by sliding the cloth between the washed and dried white towels.

4. Dipping Laundry Detergency Test

EXAMPLES AND COMPARATIVE EXAMPLES Five liters of artificial stains of the Washing Science Association, 5 cm × 5 cm in size, were immersed in 1 liter of each aqueous solution, which was immersed and washed, and then washed. The reflectances for each artificially stained cloth and white cloth (control) before and after washing were measured with a colorimeter (trade name: "ZE-2000", manufactured by Nippon Denshoku Kogyo Co., Ltd.) Calculate

Equation 1

Detergency (%) = [R _w -R _s ] / [R _o -R _s ] × 100

In Equation 1 above,

R _o represents the surface reflectance of a white cloth,

R _s represents the surface reflectance of the stained cloth before washing,

R _w represents the surface reflectance of the stained cloth after washing

Incidentally, the cleanliness is shown as the average value for the five fabrics, and the composition having the cleanability of 15% or more is evaluated as effective. Washing is carried out under the following conditions:

<Washing condition>

Laundry time (immersion time): 15 minutes

Content of laundry detergent composition: 0.1%

Washing temperature: 25 ℃

Type of cleaning: cleaning by shaking

Dewatering: Dehydrate the cloth by sliding the cloth between the washed and dried white towels.

TABLE 1a

Note: POE (9) C12-15 alkyl ethers represent polyoxyethylene C12-15-alkyl ethers.

TABLE 1b

week. POE (9) C12-15 alkyl ethers represent polyoxyethylene C12-15-alkyl ethers.

Comparing the compositions of the examples shown in Table 1 with those of the comparative examples, it was found that the laundry detergent compositions of the present invention were excellent in terms of stability, flexibility, scrubbing for oily greases and scrubbing by immersion washing. Therefore, in the present invention, since the liquid at a low viscosity is a stable liquid, a laundry detergent composition which can be used in general can easily remove stray oil, and has a practical cleaning property, form retention ability, flexibility and feel of the washed fiber. It can be prepared by incorporating nonionic surfactants, cationic surfactants, poorly water soluble solvents, water soluble solvents, amidobetaine amphoteric surfactants and inorganic salts.

In addition, it will be apparent to those skilled in the art that various changes may be made in the form and contents of the present invention set forth and mentioned above. Such changes are intended to fall within the spirit and scope of the claims appended hereto.

Clothing that requires careful handling, for example. When washing silk or woolen garments, the use of the laundry detergent composition according to the present invention contains practical detergency and form retention ability, which can impart excellent flexibility and feel to the fabric after washing, especially in undiluted form. It can be used to remove steamed oil.

Claims (7)

Based on the total weight of the composition, from 10 to 50% by weight of the nonionic surfactant (A) of Formula 1, from 1 to 15% by weight of at least one cationic surfactant (B) of Formula 2 having a total iodine value of 40 to 100 1 to 40% by weight of at least one sparingly water-soluble solvent (C) selected from a solvent of formula 3 and a solvent of formula 4, and at least one water-soluble solvent selected from solvent of formula 5 and solvent of formula 6 (D) (easily water-soluble solvent) A laundry detergent composition comprising 0.1 to 30% by weight. Formula 1 R ₁ O (CH ₂ CH ₂ O) _n H Formula 2

Formula 3 R ₆ OH Formula 4 R ₇ (OR ₈ ) _m OH Formula 5 R ₉ OH Formula 6 R ₁₀ (OR ₁₁ ) ₁ OH In the above formula 1 to 6, R ₁ represents a straight or branched C _10-22 alkyl group or alkenyl group, or an alkylphenyl group containing a C _6-12 alkyl group, R ₂ to R ₅ are independent of each other, two of which represent C _12-24 alkyl groups or alkenyl groups and the other two represent methyl, ethyl, polyoxyethylene or polyoxypropylene groups, R ₆ represents a straight or branched C _6-12 alkyl group or an alkylphenyl group containing a straight or branched C _5-12 alkyl group, R ₇ represents a straight or branched C _5-12 alkyl group or an alkylphenyl group containing a straight or branched C _5-12 alkyl group, R ₈ represents a C _2-5 alkylene group, R ₉ represents a straight or branched C _1-5 alkyl group or benzyl group, R ₁₀ represents a straight or branched C _1-4 alkyl group or alkylene group, phenyl group, benzyl group or hydrogen atom, R ₁₁ represents a straight or branched C _2-5 alkylene group, 1 and m are each 1 to 3, n is from 5 to 15 X represents a halogen atom, CH ₃ SO ₄ or C ₂ H ₅ SO ₄ . At least one poorly water-soluble solvent (C) selected from nonionic surfactants of formula (A), at least one cationic surfactant of formula (2) having a total iodine value of 40 to 100, a solvent of formula (3) and a solvent of formula (4) ), And at least one water-soluble solvent (D) selected from a solvent of formula (5) and a solvent of formula (6). Formula 1 R ₁ O (CH ₂ CH ₂ O) _n H Formula 2

Formula 3 R ₆ OH Formula 4 R ₇ (OR ₈ ) _m OH Formula 5 R ₉ OH Formula 6 R ₁₀ (OR ₁₁ ) ₁ OH In the above formulas 1 to 6, R ₁ represents a straight or branched C _12-20 alkyl group or alkenyl group, or an alkylphenyl group containing a C _6-12 alkyl group, R ₂ to R ₅ are independent of each other, two of which represent C _12-24 alkyl groups or alkenyl groups and the other two represent methyl, ethyl, polyoxyethylene or polyoxypropylene groups, R ₆ represents a straight or branched C _6-10 alkyl group or an alkylphenyl group containing a straight or branched C _5-12 alkyl group, R ₇ represents a straight or branched C _5-12 alkyl group or an alkylphenyl group containing a straight or branched C _5-l2 alkyl group, R ₈ represents a C _2-5 alkylene group, R ₉ represents a straight or branched C _1-5 alkyl group or benzyl group, R ₁₀ represents a straight or branched C _1-4 alkyl group or alkylene group, phenyl group, benzyl group or hydrogen atom, R ₁₁ represents a straight or branched C _2-5 alkylene group, 1 and m are each 1 to 3, n is from 5 to 15 X represents a halogen atom, CH ₃ SO ₄ or C ₂ H ₅ SO ₄ . At least one poorly water-soluble solvent (C) selected from nonionic surfactants of formula (A), at least one cationic surfactant of formula (2) having a total iodine value of 40 to 100, a solvent of formula (3) and a solvent of formula (4) ), And at least one water-soluble solvent (D) selected from a solvent of formula (5) and a solvent of formula (6). Formula 1 R ₁ O (CH ₂ CH ₂ O) _n H Formula 2

Formula 3 R ₆ OH Formula 4 R ₇ (OR ₈ ) _m OH Formula 5 R ₉ OH Formula 6 R ₁₀ (OR ₁₁ ) ₁ OH In the above formula 1 to 6, R ₁ represents a straight or branched C _12-16 alkyl group or alkenyl group, or an alkylphenyl group containing a C _6-12 alkyl group, R ₂ to R ₅ are independent of each other, two of which represent C _12-24 alkyl groups or alkenyl alkyl groups and the other two represent methyl, ethyl, polyoxyethylene or polyoxypropylene groups, R ₆ represents a straight or branched C _6-8 alkyl group, or an alkylphenyl group containing a straight or branched C _5-l2 alkyl group, R ₇ represents a straight or branched C _5-12 alkyl group or an alkylphenyl group containing a straight or branched C _5-12 alkyl group, R ₈ represents a C _2-5 alkylene group, R ₉ represents a straight or branched C _1-5 alkyl group or benzyl group, R ₁₀ represents a straight or branched C _1-4 alkyl group or alkylene group, phenyl group, benzyl group or hydrogen atom, R ₁₁ represents a straight or branched C _2-5 alkylene group, l and m are each 1 to 3, n is from 5 to 15 X represents a halogen atom, CH ₃ SO ₄ or C ₂ H ₅ SO ₄ . The laundry detergent composition of claim 1, further comprising 0.01 to 2% by weight of amidobetaine amphoteric surfactant. The laundry detergent composition of claim 1, further comprising 0.01 to 5% by weight of a salt having a water solubility of 10% by weight or more. The laundry detergent composition according to claim 4, further comprising 0.01 to 5% by weight of a salt having a water solubility of 10% by weight or more. The laundry detergent composition according to claim 1, which is a clothing liquid detergent suitable for immersion washing.