JP2002294293A - Liquid detergent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid detergent composition which exhibits high cleaning effects and persistence of detergency in a cleaning method wherein an object to be cleaned is scrubbed with a flexible absorbent directly impregnated with a cleaning liquid and a small amount of water. SOLUTION: This liquid detergent composition contains (a) an amide compound represented by formula 1, (b) an anionic surfactant, (c) an amphoteric surfactant, (d) a nonionic surfactant, (e) at least one water-soluble organic solvent selected from among ethanol, propanol, isopropanol, ethylene glycol, and propylene glycol, and (f) benzenesulfonic acid optionally substituted by one to three 1-3C alkyl groups or a salt thereof. The sum of contents of (a), (b), (c), and (d) is 20-50 mass%. The mass ratio of (b)/(a) is (10/1)-(1/2). The sum of contents of (e) and (f) is 8-20 mass%. The composition has a viscosity of 300-1,000 Pa.s at 20 deg.C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid detergent composition, and more particularly, to a method of rubbing an object to be cleaned by using a flexible absorbent body directly impregnated with a cleaning solution and a small amount of water. More particularly, the present invention relates to a liquid detergent composition for washing dishes such as tableware and cooking utensils.

[0002]

2. Description of the Related Art As consumers are becoming more and more conscious of the environment, efforts are being made to reduce the amount of waste in detergents, and to increase the concentration of compositions. Techniques have been developed to reduce the amount of waste by reducing the amount of cleaning agent used at one time and reducing the size of containers.

[0003] In addition to the cleaning performance, the cleaning agent is required to have a long-lasting detergency. For example, when washing dishes by hand washing, it is preferable that the number of dishes that can be washed by one impregnation after impregnating the flexible absorber with a detergent is larger. Regarding the dishwashing method, use an aqueous solution obtained by diluting a cleaning agent with water, and rub and wash with a flexible absorber such as a sponge or towel while contacting an object to be washed such as tableware, or a method using a washing solution and a small amount of water. There is a method of scrubbing tableware and the like using a flexible absorbent material directly impregnated with, and the latter method is generally often used.

Japanese Patent Publication No. Hei 11-503377 discloses that a surfactant composition which can be densified with a small amount of water is contained in an adsorbent such as a sponge, and then the adsorbent and the surfactant composition are treated with water. A washing method has been disclosed in which the surfactant composition is made denser in the adsorption carrier to prolong the release of the surfactant outflow. However, this technology has a long-lasting detergency for mild stains, but the washing effect itself is not satisfactory for dishes with stubborn oil stains, etc. There is a problem that the sustainability is significantly reduced. As a method for improving the cleaning effect, it is conceivable to increase the concentration of a surfactant. However, if this technique is applied to the above-described technique, the composition may be thickened or gelled, and a problem may occur in storage stability.

[0005] JP-A-11-80786 discloses a detergent composition containing an alkanolamide type surfactant. Although this technique is said to provide a detergent having low irritation and a high cleaning effect, it does not provide a satisfactory persistence of the cleaning power.

Japanese Patent Application Laid-Open No. Hei 6-33099 discloses a liquid detergent containing an alkanolamide and used by impregnating it into a sponge. However, this is a technique that can prevent the detergent from being excessively used because it is possible to visually observe the appearance of the detergent into the sponge, and does not improve the sustainability of the cleaning power.

Accordingly, an object of the present invention is to provide a method for rubbing an object to be cleaned by using a flexible absorbent directly impregnated with a cleaning liquid and a small amount of water, the liquid having a high cleaning effect and a long lasting cleaning power. It is an object of the present invention to provide a cleaning composition, particularly a liquid cleaning composition suitable for washing dishes having excellent washing properties for washing dishes and cooking utensils.

[0008]

According to the present invention, there are provided (a) a compound represented by the following general formula (1): 1 to 20% by mass;
5 to 40% by mass of an anionic surfactant, 0.1 to 20% by mass of (c) an amphoteric surfactant, 0 to 15% by mass of (d) a nonionic surfactant, (e) ethanol, propanol, 4 to 15% by mass of at least one water-soluble organic solvent selected from isopropanol, ethylene glycol and propylene glycol, and (f) benzene sulfone which may be substituted by 1 to 3 alkyl groups having 1 to 3 carbon atoms 1 to 10% by mass of an acid or a salt thereof, and (a), (b),
The sum of (c) and (d) is 20 to 50% by mass,
(B) / (a) the mass ratio is 10/1 to 1/2,
20 ° C. where the sum of (e) and (f) is 8 to 20% by mass
The present invention provides a liquid detergent composition having a viscosity of 300 to 1000 mPa · s.

[0009]

Embedded image

Wherein R ¹ -CO is an acyl group having 8 to 20 carbon atoms, and R ² is a methyl group, an ethyl group or-(C ₂ H
₄ O) _m -H and R ³ is-(C ₂ H ₄ O) _n -H.
m and n are numbers from 0 to 5, respectively, and m + n is from 1 to 6. ].

In the present invention, the viscosity of the composition is measured as follows. First, B made by TOKIMEC.INC
A viscometer model BM equipped with a rotor of rotor number No. 3 is prepared. The sample (composition) is filled in a tall beaker and adjusted to 20 ° C. in a 20 ° C. constant temperature bath. The sample prepared at a constant temperature is set in a viscometer. The rotational speed of the rotor is set to 30 r / m, and the viscosity 60 seconds after the start of the rotation is defined as the viscosity of the present invention.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The composition of the present invention has the general formula (1)
[Hereinafter, referred to as component (a)]. In the compound of the general formula (I), R ¹ CO— has 8 to ¹ carbon atoms.
Preferred is an acyl group of 8 wherein R ¹ is a saturated or unsaturated hydrocarbon group. Preferred examples of such an acyl group include octanoic acid, decanoic acid, dodecanoic acid, tetradecanoic acid, hexadecanoic acid, octadecanoic acid, docosanoic acid, linoleic acid, 2-ethylhexanoic acid, 2-octylundecanoic acid, isostearic acid, and oleic acid. And particularly preferred is an acyl group derived from octanoic acid, decanoic acid, dodecanoic acid, tetradecanoic acid, hexadecanoic acid, octadecanoic acid, and oleic acid.

In the present invention, the acyl group may have a single alkyl group or an alkenyl group, but the fatty acid corresponding to R ¹ CO— may be a mixed fatty acid, and may have a cleaning effect. It is preferable from the viewpoint of foaming power.
As the preferred mixed fatty acid composition, the following composition is preferable as the mass% in the fatty acid. In addition, although other fatty acids may be contained, it is preferable from the viewpoint of storage stability that the fatty acid is prepared so that the total weight of the following fatty acids is 100% by mass. Caprylic acid; 1 to 10% by weight, preferably 3 to 6% by weight Capric acid; 1 to 12% by weight, preferably 3 to 7% by weight Lauric acid: 44 to 60% by weight, preferably 44 to 55%
Mass% myristic acid; 10 to 22 mass%, preferably 10 to 1 mass%
7% by weight palmitic acid; 4 to 10% by weight, preferably 6 to 10% by weight stearic acid; 0 to 10% by weight, preferably 1 to 7% by weight oleic acid; 0 to 17% by weight, preferably 1 to 17% by weight %.

In the compound of the general formula (1), R ² is a methyl group, an ethyl group or — (C ₂ H ₄ O) _m —H, and preferably a methyl group or a hydrogen atom ( m = 0). R ³ is — (C ₂ H ₄ O) _n —H, where n is preferably 1 to 5 from the viewpoint of the durability of the cleaning effect.
Particularly preferably, the number is 1 to 3.

Preferred examples of the compound of the general formula (1) include the compounds of the general formulas (1-a) and (1-b).

[0016]

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The composition of the present invention contains an anionic surfactant (hereinafter, referred to as component (b)). As the component (b), alkyl benzene sulfonate, polyoxyalkylene alkyl ether sulfate, alkyl sulfate, α-olefin sulfone having an alkyl group or an alkenyl group having 8 to 18, preferably 10 to 18 carbon atoms. Anionic surfactants selected from acid salts, α-sulfofatty acid salts, α-sulfofatty acid lower alkyl ester salts and fatty acids are preferred.

Examples of the alkyl benzene sulfonate include:
Among those generally distributed in the detergent surfactant market, any alkyl chain having 8 to 18 carbon atoms can be used. For example, Neoperex F25 manufactured by Kao Corporation, Shell Co., Ltd. Dobs 102 or the like can be used. In addition, industrially, it can also be obtained by sulfonating alkylbenzene, which is widely distributed as a detergent raw material, using an oxidizing agent such as chlorosulfonic acid or sulfurous gas. The alkyl group preferably has 10 to 14 carbon atoms. As the polyoxyalkylene alkyl ether sulfate, a linear or branched primary alcohol or a linear secondary alcohol having 8 to 18 carbon atoms, preferably 8 to 16 carbon atoms may be added to ethylene oxide (hereinafter referred to as EO).
Is added on average to 0.5 to 5 mol per molecule, and this can be obtained by, for example, sulfating using the method described in JP-A-9-137188. As the alkyl sulfate ester salt, a linear or branched primary alcohol or a linear secondary alcohol having 8 to 16, preferably 8 to 14 carbon atoms may be used.
It can be obtained by sulfonation with ₃ or chlorosulfonic acid and neutralization. As the α-olefin sulfonate,
A mixture of a compound having a hydroxy group in a hydrocarbon group and a compound having an unsaturated bond, which can be formed by sulfonating an α-alkene having 8 to 18 carbon atoms with SO ₃ and subjecting it to hydration / neutralization. It is. Further, as the α-sulfofatty acid lower alkyl ester salt, the carbon number of the alkyl group is from 8 to
16 is preferable, and methyl ester or ethyl ester is preferable from the viewpoint of the cleaning effect. In the present invention, skin irritation,
A polyoxyethylene alkyl sulfate having 8 to 14 carbon atoms and an average number of moles of EO added of 1 to 3 is particularly preferable from the viewpoint of the washing effect. The fatty acid is preferably a saturated fatty acid having 8 to 14 carbon atoms, preferably caprylic acid, capric acid, lauric acid, and myristic acid. Also, fatty acids having an alkyl distribution derived from coconut oil or palm kernel oil can be used. The fatty acid of the present invention is a compound composed of only an alkyl group or an alkenyl group and a carboxylic acid group, and does not include compounds such as alkyl ether carboxylic acids and alkyl amide carboxylic acids.

As the salt of the component (b), a sodium salt, a potassium salt, a magnesium salt, a calcium salt, an alkanolamine salt, and an ammonium salt are preferable, and a sodium salt, a potassium salt, and a magnesium salt are preferable from the viewpoint of a washing effect.

The composition of the present invention contains at least one of an amine oxide type surfactant and an amphoteric surfactant (hereinafter, referred to as component (c)) for the purpose of improving the cleaning effect. As the component (c), a compound selected from the compound represented by the following general formula (2) and the compound represented by the general formula (3) is preferable, and the compound represented by the general formula (2) is particularly preferable from the viewpoint of long-lasting detergency.

[0021]

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Wherein R ⁴ is a straight-chain alkyl group or alkenyl group having 8 to 16, preferably 10 to 16, and particularly preferably 10 to 14, carbon atoms, and R ⁶ and R ^{7 each} have 1 to 3 carbon atoms. Or an alkyl group or a hydroxyalkyl group, preferably a methyl group, an ethyl group or a hydroxyethyl group.
R ⁵ is an alkylene group having 1 to 5, preferably 2 or 3 carbon atoms. A is -COO-, -CONH-, -OCO
-, -NHCO-, -O-, wherein a is a number of 0 or 1. ]

[0023]

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Wherein R ⁸ is an alkyl or alkenyl group having 9 to 23, preferably 9 to 17, particularly preferably 9 to 15 carbon atoms, and R ⁹ has 1 to 6 carbon atoms, preferably 2 or 3 alkylene groups. B is -COO-, -C
A group selected from ONH-, -OCO-, -NHCO-, and -O-, and b is a number of 0 or 1. R ¹⁰ , R
¹¹ is an alkyl or hydroxyalkyl group having 1 to 3 carbon atoms, R ¹² is 1 to 5 carbon atoms which may be substituted with a hydroxy group, an alkylene group having preferably 1 to 3. D is _{^{-COO -, -SO 3 -, -OSO}} 3 - is a group selected from. ].

The composition of the present invention contains a nonionic surfactant (hereinafter, referred to as component (d)). As the component (d), a polyoxyalkylene alkyl ether type nonionic surfactant having an alkyl group having 8 to 16 carbon atoms and an alkylene group having an average addition number of 5 to 20;
A nonionic surfactant selected from 14 alkyl polyglycoside type nonionic surfactants is preferred. Further, a nonionic surfactant selected from the compounds of the following general formula (4), the compound of the general formula (5), and the compound of the general formula (6) is preferable. _{^{R 13 -O (EO) g H}} (4) wherein, R ¹³ is 10 to 20 carbon atoms, preferably 10 to 1
8 primary linear alkyl groups, branched alkyl groups or secondary alkyl groups. EO is ethylene oxide, and g is 5 to 20 as an average number of moles added. ] _{^{R 14 -O [(EO) p}} / (PO) q] H (5) wherein, R ¹⁴ is 10 to 20 carbon atoms, preferably 10 to 1
8 primary alkyl groups. EO indicates ethylene oxide, and PO indicates propylene oxide. p is 5-1
5, q is 1 to 5. EO and PO may be added randomly, or PO may be added after EO is added, or vice versa. ] _{^{R 15 - (OR 16) d}} G e (6) [wherein, R ¹⁵ is from 8 to 16 carbon atoms linear, preferably 10
To 16, particularly preferably 10 to 14 alkyl groups, R ¹⁶
Is an alkylene group having 2 to 4 carbon atoms, preferably an ethylene group or a propylene group, particularly an ethylene group, G is a residue derived from a reducing sugar, d is a number having an average of 0 to 6, and e is an average of 1
The number is from 10 to 10, preferably from 1 to 5, particularly preferably from 1 to 2. ].

In the compound of the general formula (6), G is a residue derived from a reducing sugar, and the reducing sugar as a raw material may be any of aldose and ketose, and has 3 to 6 carbon atoms. Individual trioses, tetroses, pentoses and hexoses can be mentioned. Specific examples of aldose include apiose, arabinose, galactose, glucose, lyxose, mannose, galose, aldose, idose, talose, and xylose, and examples of ketose include fructose. In the present invention, among these, aldopentose or aldohexose having 5 or 6 carbon atoms is particularly preferable,
Among them, glucose is most preferred.

The compound of the general formula (6) is prepared by combining the above reducing sugar with R ¹⁵
-(OR ¹⁶ ) _d -OH can be easily synthesized by an acetalization reaction or a ketalization reaction using an acid catalyst. Further, in the case of an acetalization reaction, it may have a hemiacetal structure or a normal acetal structure.

Further, as the component (d), a compound represented by the following general formula (7) can be used.

[0029]

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[0030] wherein; E is R ²⁰ -CO-, or a hydrogen atom, preferably an R ²⁰ -CO-, R ^{2 0} is 9 carbons
To 19, preferably 9 to 15 alkyl or alkenyl groups. R ¹⁷ is an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group, preferably a methyl group, an ethyl group, a hydroxyethyl group, particularly a methyl group. R ¹⁸ is an alkylene group having 1 to 6, preferably 2 or 3 carbon atoms;
¹⁹ is an alkyl or alkenyl group having 9 to ¹⁹ , preferably 9 to 15 carbon atoms. ].

As the component (d) of the present invention, a compound of the general formula (6) is particularly preferred from the viewpoint of long-lasting detergency.

The composition of the present invention contains at least one water-soluble organic solvent selected from ethanol, propanol, isopropanol, ethylene glycol and propylene glycol (hereinafter, referred to as component (e)). (E) Component is more preferably ethanol and propylene glycol,
Particularly, it is most preferable to use ethanol and propylene glycol in combination.

The composition of the present invention contains benzenesulfonic acid or a salt thereof (hereinafter, referred to as component (f)) which may be substituted by 1 to 3 alkyl groups having 1 to 3 carbon atoms.
As the component (f), cumenesulfonic acid, m-xylenesulfonic acid, and p-toluenesulfonic acid are preferable, and p-toluenesulfonic acid is particularly preferable for the purpose of adjusting the viscosity. The salt is preferably a sodium salt, a potassium salt and / or a magnesium salt.

(Liquid detergent composition) The composition of the present invention comprises:
Component (a) is 1 to 20% by mass, preferably 2 to 15% by mass, and component (b) is 5 to 40% by mass, preferably 10 to 3% by mass.
It contains 5% by mass, component (c) 0.1 to 20% by mass, preferably 1 to 15% by mass, and component (d) 0 to 15% by mass, preferably 1 to 10% by mass. The component (b) /
Component (a) is 10/1 to 1/2, preferably 10/1 to 1
It is contained in a mass ratio of 1/1, particularly preferably 5/1 to 1/1. Furthermore, from the viewpoint of sustainability of the detergency, the component (c) /
It is preferable that the component (b) be contained at a mass ratio of 1/10 to 1/1, more preferably 1/5 to 1/1. When the compound represented by the general formula (7) is used as the component (d), its content is preferably 0.01 to 0.5% by mass in the composition.

The composition of the present invention comprises (e) component 4
-15% by mass, preferably 4-10% by mass, containing component (f) 1-10% by mass, preferably 2-8% by mass,
The total of the component (e) and the component (f) is 8 to 20% by mass, preferably 8 to 15% by mass.

The composition of the present invention is preferably in the form of an aqueous solution in which the above components are dissolved in water, from the viewpoints of ease of use and storage stability. The water content is 20 to 70% by mass, preferably 30% by mass.
-60 mass%, more preferably 40-60 mass%, particularly preferably 45-55 mass%. In addition, the composition of the present invention has a viscosity at 20 ° C of 300 to 1000 mPa · s, preferably 30
0 to 900 mPa · s.

Further, the composition of the present invention preferably has a pH at 20 ° C. of 6 to 8, preferably 6.5 to 7.5, from the viewpoint of storage stability and safety on the skin. As a pH adjuster, inorganic acids such as hydrochloric acid and sulfuric acid, citric acid,
Acid agents such as succinic acid, malic acid, fumaric acid, tartaric acid, malonic acid, maleic acid and other organic acids, and sodium hydroxide, potassium hydroxide, ammonia and its derivatives, monoethanolamine, diethanolamine, triethanolamine, etc. It is preferable to use alkali agents such as sodium carbonate and potassium carbonate, alone or in combination, such as amine salts. Particularly, an acid selected from hydrochloric acid, sulfuric acid and citric acid and an alkali agent selected from sodium hydroxide and potassium hydroxide are used. Preferably, it is used.

The composition of the present invention comprises the component (a)
(D) the content of a surfactant other than the component is less than 3% by mass;
Further, the content is preferably less than 2% by mass in order to enjoy the effects of the present invention. Surfactants other than the components (a) to (d) which can be blended in the composition of the present invention include polyhydroxy fatty acid amides described in JP-A-6-505032 and JP-A-10-307283. And the like.

In the present invention, a viscosity modifier other than the component (e) and the component (f) may be contained, but the content is preferably less than 2% by mass, more preferably less than 1% by mass. It is preferable to obtain the effect. Here, the viscosity modifier is a substance that changes the viscosity at 20 ° C. by 100 mPa · s or more when 1% by mass of the composition is added to a solution containing only the components (a) to (d) and water. And the inorganic salt and the surfactant are not included in the viscosity modifier of the present invention. Examples of the viscosity modifier other than the component (e) and the component (f) include partially crosslinked polyacrylic acid, hydroxyethyl cellulose, carboxymethyl cellulose, xanthan gum, polyethylene glycol (weight average molecular weight = 300 to 4000), and polypropylene glycol (weight average molecular weight = 300 to 2000), glycerin, polyglycerin (condensation degree 2 to 10), sorbitol, pentaerythritol and the like.

The composition of the present invention preferably contains 0.1 to 2% by mass of magnesium ion, more preferably 0.1 to 2% by mass.
The content of 1% by mass is desirable for the purpose of improving the cleaning effect. Specifically preferred compounds are magnesium sulfate, magnesium chloride and magnesium hydroxide.

The composition of the present invention comprises a fragrance component, a colorant,
Components generally compounded in liquid detergents, such as dispersants, abrasives, and antibacterial and antifungal agents, can be compounded within a range that does not affect viscosity and stability.

The composition of the present invention is a liquid detergent composition most suitable for a method of directly impregnating a flexible absorbent body and rubbing an object to be washed such as tableware with a small amount of water. It shows excellent cleaning power and cleaning durability for cleaning dishes and utensils. Here, impregnation means that the detergent is soaked into the flexible absorber. As the flexible absorber, a sponge or scourer made of polyvinyl chloride, polyvinylidene chloride, nylon, polypropylene, polyester, cellulose, polyacrylamide, or polyurethane is preferable, and a material made of polyurethane or cellulose is particularly preferable. Further, in the present invention, it is preferable to impregnate the flexible absorbent with 0.1 to 2 g of the cleaning liquid in one cleaning step. In addition, moisture may be present in the flexible absorber. And the dishwashing method using the composition of the present invention includes a step of washing an object to be washed, particularly dishware, with the flexible absorbent body impregnated with the composition as described above. In this step, a method in which the flexible absorbent impregnated with the composition is brought into direct contact with the object to be cleaned and scrubbed is preferred. After washing, rinse with water.

[0043]

EXAMPLES A cleaning composition was prepared using the components shown in Table 1. The detergency test of these compositions was evaluated by the following method. Table 1 shows the results.

<Detergency Test> 2 g of a model oil stain obtained by mixing salad oil / tallow at a mass ratio of 1/1 and further uniformly mixing 0.1 mass% of a pigment (stan red) in a melamine dish. The spread food was used as model contaminated tableware.

A commercially available sponge (flexible material, Goldfowl Cleaner No. 5005, polyurethane foam) was impregnated with the composition of Table 1 in an amount of 0.44 g of the surfactant and 15 g of tap water, and was then impregnated. Bubbling in the hands. Using this, the model-contaminated tableware was scrubbed, and the number of dishes that could be cleaned (confirmed by disappearance of the color attached to the tableware) was determined.

[0046]

[Table 1]

(Note) The symbols in the table represent the following. Amide compound (1): R ¹ in the general formula (1-a)
CO- is caprylic acid (4.5% by mass), capric acid (5
Mass%), lauric acid (54.5% by mass), myristic acid (11.5% by mass), palmitic acid (10% by mass),
A compound in which k is 1 and is an acyl group derived from a mixed fatty acid of stearic acid (5.5% by mass) and oleic acid (9% by mass). Amide compound (2): R in the general formula (1-b) ¹
CO- is an acyl group derived from lauric acid;
LAS-Na: sodium alkylbenzene sulfonate having 12 to 15 carbon atoms in the alkyl group ES: polyoxyethylene coconut alkyl ether sulfate ammonium ester (average number of moles of EO added: 2 mol) AS: lauryl sulfate Ammonium salt • AOS: 1-olefin having 12 to 14 carbon atoms is converted to SO ₃
Α-olefin sodium sulfonate sulfonated with sodium hydroxide and neutralized with sodium hydroxide SFE: palm composition fatty acid methyl ester sulfonated with SO ₃ and neutralized with sodium hydroxide α-sulfo fatty acid methyl sodium salt AO: N-lauryl-N, N-dimethylamine oxide AB: N-lauroylaminopropyl-N, N-dimethyl-N-carboxymethylammonium betaine Nonion (1): C12,13 mixed alkyl secondary alcohol, 7 moles of EO added on average (sophthanol 70, manufactured by Nippon Shokubai Co., Ltd.) Nonion (2): the composition of the alkyl group is a straight-chain mixed alkyl having 12/14 carbon atoms = 60/40, and the average glucoside Alkyl glucoside with non-condensation degree 1 Nonion (3): C ₁₁ H ₂₃ CON (CH ₃ ) C ₂ H ₄ OC
OC ₁₁ H ₂₃ (1 mol of N-methylethanolamine and 2
It was synthesized by the dehydration condensation reaction of mole lauric acid. Unreacted amines and / or fatty acids were removed with a thin film still.・ P-TS: sodium p-toluenesulfonate ・ MXS: sodium m-xylenesulfonate ・ CMS: sodium p-cumenesulfonate ・ PPG: polypropylene glycol, weight average molecular weight 1200 ・ Antibacterial agent: Proxel BDN (Abisia K.K.) All the compositions were adjusted to pH 7.0 at 20 ° C. with a 1/10 N aqueous sulfuric acid solution or a 1/10 N aqueous sodium hydroxide solution.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C11D 17/08 C11D 17/08 (72) Inventor Kazunari Maruta 1334 Minato, Wakayama-shi, Wakayama Pref. In-house (72) Inventor Nobuyuki Ogura 1334 Minato, Wakayama-shi, Wakayama Pref.F-term in Kao Corporation Research Institute (Reference)

Claims (1)

[Claims] (1) 1 to 20% by mass of a compound represented by the following general formula (1), and (b) 5 to 5% of an anionic surfactant.
40% by mass, (c) 0.1 to 20% by mass of the amphoteric surfactant, (d) 0 to 15% by mass of the nonionic surfactant,
(E) ethanol, propanol, isopropanol,
4 to 15% by mass of at least one water-soluble organic solvent selected from ethylene glycol and propylene glycol, and (f) benzenesulfonic acid which may be substituted with 1 to 3 alkyl groups having 1 to 3 carbon atoms or The salt is contained in an amount of 1 to 10% by mass, the total of (a), (b), (c) and (d) is 20 to 50% by mass, and the (b) / (a) mass ratio is 10%.
/ L to 1/2, and the total of (e) and (f) is 8 to 20
The viscosity at 20 ° C. is 300 to 1000 mPa
-S liquid detergent composition. Embedded image Wherein R ¹ -CO is an acyl group having 8 to 20 carbon atoms;
R ² is a methyl group, an ethyl group or - _{(C 2 H 4 O) m} -H, R 3 is - _{(C 2 H 4 O) n} -H. m and n are numbers from 0 to 5, respectively, and m + n is from 1 to 6. ]