JP2001214196A - Liquid detergent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid detergent composition which shows excellent washing power to clothes fouled with a terrible stain such as sebum stain and the like and possesses a high anti-bacterial effect. SOLUTION: A liquid detergent composition contains (a) 1 to 50 wt.% of an amide type nonionic surfactant represented by formula (1), (b) 1 to 50 wt.% of an anionic surfactant and (c) 0.1 to 20 wt.% of an anti-bacterial agent (wherein R is a 7 to 21C hydrocarbyl group; R1 is a 2 to 8C hydrocarbyl group; R2 is a 1 to 8C hydrocarbly group or oxyhydrocarbyl group; and Z is a 3 to 10C polyhydroxyhydrocarbly group having at least 2 hydroxyl groups).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a liquid detergent composition.

[0002]

2. Description of the Related Art In recent years, there has been an increase in awareness of hygiene, and in the field of laundry detergents, the generation of unpleasant odors in clothes after washing and the generation of unpleasant odors due to long-term storage after washing have been suppressed.
Products with antibacterial effects are on the market. Also,
Since many bleaching agents have an antibacterial effect, attempts to add chlorine-based or oxygen-based bleaching agents to laundry detergents have been made before. However, chlorine bleaching agents, which are known to have high antibacterial effects, are widely known to have the problem of discoloration of colored products. Oxygen bleach also has the problem of discoloration,
It is clear in the art that decolorization in the presence of metals and the like is known, and it is difficult to stably blend it into a heavy liquid detergent for clothing which is generally weakly alkaline.

On the other hand, cationic antibacterial agents widely used in detergents in the hygiene field have been attempted to be incorporated into clothing detergents because of their wide spectrum of antibacterial properties and their fast-acting properties. However, when an anionic surfactant is used as a surfactant or in the presence of a substance having an anionic charge such as a protein, there is a problem that the activity of the cationic antibacterial agent is significantly reduced. . Japanese Patent Application Laid-Open No. 1-197598 discloses a stable liquid laundry exhibiting an antibacterial effect comprising a nonionic surfactant as a main component, a specific anionic surfactant, a cationic surfactant type antibacterial agent, and a benzoate. A detergent is disclosed. However, the composition disclosed in the above-mentioned patent publication has excellent storage stability but does not have an adequate antibacterial effect, and the antibacterial effect is remarkably reduced particularly for clothing to which stubborn dirt such as sebum dirt is attached. there were.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a liquid detergent composition for clothing which has a high antibacterial effect even on clothing to which severe dirt such as sebum dirt is attached.

[0005]

According to the present invention, there are provided (a) 1 to 50% by weight of a nonionic surfactant represented by the following general formula (I):
The present invention relates to a liquid detergent composition containing (b) 1 to 50% by weight of an anionic surfactant and (c) 0.1 to 20% by weight of an antibacterial agent.

[0006]

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Wherein R is a hydrocarbyl group having 7 to 21 carbon atoms, R ¹ is a hydrocarbyl group having 2 to 8 carbon atoms, and R ² is a hydrocarbyl group or an oxyhydrocarbyl group having 1 to 8 carbon atoms. And Z is a C3-C10 polyhydroxyhydrocarbyl group having at least two hydroxyls. A preferred liquid detergent composition in the present invention is a cloth in which 1% by weight of the liquid detergent composition is uniformly adhered to a cotton cloth # 2003 and conforms to JIS L 1902 "Testing method for antibacterial property of textiles". The antibacterial test was performed by the method, and the inhibition zone was observed.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Component (a) The component (a) in the present invention is an amide type nonionic surfactant of the general formula (I).

[0009]

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[0010] [wherein, R 7 to 21 carbon atoms, it is preferably a hydrocarbyl group having 11 to 17, R ¹ is 2 carbon atoms
To 8 hydrocarbyl groups, preferably alkylene groups having 2 to 4 carbon atoms, and R ² represents a hydrocarbyl group or an oxyhydrocarbyl group having 1 to 8 carbon atoms, preferably 1 carbon atom.
And Z is a polyhydroxyhydrocarbyl group having 3 to 10 carbon atoms and having at least 2 hydroxyl groups. ].

The preferred component (a) in the present invention is that R ¹ in the general formula (I) is a linear or branched alkylene group having 2 to 4 carbon atoms, and R ² is a linear or branched alkylene group. Carbon number 1
To 4 alkyl groups. In particular, a composition in which the substituent —R ¹ —O—R ² is selected from the group consisting of methoxyethyl and methoxypropyl is preferred. Component Z is preferably a group derived from a compound selected from the group consisting of glucose, fructose, maltose, lactose, xylose and glycerol, and these may be a mixture.

The compound of the general formula (I) is obtained, for example, by reacting the above saccharide with H ₂ N—R ¹ —O—R ² in water or a lower alcohol solvent, and forming the resulting imine compound with hydrogen such as palladium carbon or Raney nickel. A sugar amine is produced by hydrogenation under a hydrogen atmosphere using a hydrogenation catalyst, and then acylated by a conventional method using a fatty acid, a fatty acid anhydride or a fatty acid salt compound. In the hydrogenation reaction of the imine compound, sodium borohydride, sodium hydride, or lithium aluminum hydride may be used.

The liquid detergent composition of the present invention comprises (a) 1 to 50% by weight, preferably 2 to 40% by weight of a nonionic surfactant.
%, More preferably 3 to 30% by weight. The content is 1% by weight or more in terms of cleaning performance and antibacterial performance, and 50% by weight or less in terms of dispersibility in water.

Component (b) The anionic surfactant in the present invention is, for example, an alkylbenzenesulfonic acid or a salt thereof, an alkyl or alkenyl ether sulfate, an alkyl or alkenyl sulfate, an olefin sulfonate, or an alkane sulfonate. ,
Examples include fatty acids or salts thereof, alkyl or alkenyl ether carboxylate, α-sulfofatty acid salts, and α-sulfofatty acid esters. Among them, the carbon number is 10 to 20
Alkylbenzenesulfonic acid or a salt thereof, an alkyl or alkenyl ether sulfate, an alkyl or alkenyl sulfate, a fatty acid or a salt thereof is preferred. Particularly, alkyl or alkenyl ether sulfates and alkyl or alkenyl sulfates having an average addition mole number of ethylene oxide of 1 to 10, preferably 1 to 5 are preferred in view of washing performance and antibacterial performance.

Examples of the counter ion of the anionic surfactant include, in addition to alkali metals such as sodium and potassium, alkaline earth metals such as magnesium, and alkanolamines such as mono, di, and triethanolamine. The use of the compound improves liquid stability. Further, an anionic surfactant may be incorporated in the composition in the form of an acid, or may be neutralized with an alkali agent (alkanolamine or the like) added separately.

The liquid detergent composition of the present invention contains (b) an anionic surfactant in an amount of 1 to 50% by weight, preferably 1 to 40% by weight.
%, More preferably 1.5 to 30% by weight.
The content is 1% by weight or more in terms of cleaning performance and antibacterial performance, and 50% by weight or less in terms of dispersibility in water.

The component (c) to be described later is (c-
When the component (2) is used, the component (b) of the anionic surfactant is preferably [(c-2) component]> [anionic surfactant × 1], particularly [(c- 2) Component]> [anionic surfactant × 1.1] is preferably incorporated into the composition in a molar ratio of:

Component (c) As the antibacterial agent of the component (c), a cloth in which 1% by weight of the compound is uniformly adhered to a cotton cloth # 2003 is used according to JIS L
Compounds which are subjected to an antibacterial test according to a method according to 1902 "Testing method for antibacterial activity of textile products" and show a zone of inhibition are preferred.

The liquid detergent composition of the present invention contains the component (c) with an antibacterial agent in an amount of from 0.1 to 0.1 from the viewpoint of cleaning performance and antibacterial performance.
The content is 20% by weight, preferably 0.5 to 15% by weight, more preferably 1 to 10% by weight.

The antibacterial agent (c) includes the following (c-1) to (c-
One or more kinds selected from the antibacterial compounds of 3) are preferable,
1 selected from the antibacterial compounds (c-1) to (c-2)
The species are more preferably, and the antibacterial compound (c-2) is particularly preferable. (C-1) The solubility in water 100 g at 20 ° C. is 1 g.
Or less, preferably 0.5 g or less, and a molecular weight of 100 to 42.
0, preferably 150 to 410, a water-insoluble antibacterial compound containing no quaternary ammonium group and having a melting point of 40 ° C. or higher (excluding organic peracids or organic peroxides) Preferred as the compound satisfying the property (c-1) are triclosan, bis- (2-pyridylthio-1-oxide) zinc, 2,4,5,6-tetrachloroisophthalonitrile, trichlorocarbanilide, and 8-chlorobenzene. It is at least one selected from oxyquinoline, dehydroacetic acid, benzoic esters, chlorocresols, chlorothymol, chlorophen, dichlorophen, bromochlorophen, and hexachlorophen. In particular, triclosan is preferred in terms of the effect of suppressing odor. The triclosans described in JP-A-11-189975 are also good, and specifically, dichlorohydroxydiphenylether and monochlorohydroxydiphenylether are preferred. (C-2) The solubility in water 100 g at 20 ° C. is 1 g.
As described above, as the compound of the water-soluble cationic antibacterial compound (c-2) having at least one alkyl group having 8 to 16 carbon atoms, the following general formulas (II) to (I)
One or more compounds selected from the compounds of V) are preferred.

[0021]

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[Wherein, R^ThreeAnd R⁸Is a group having 5 to 19 carbon atoms.
Alkyl or alkenyl group; ^Four, R^FiveIs 1 carbon
To 3 alkyl groups or hydroxyalkyl groups. X
Is -COO-, -OCO-, -CONH-, -NHCO
-Or

[0023]

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## EQU1 ## R ⁶ is an alkylene group having 1 to 3 carbon atoms, and R ⁷ is an alkylene group having 1 to 6 carbon atoms or — (O
—R ⁹ ) _n —. Here, R ⁹ is an ethylene group or a propylene group, and n is a number of 1 to 10. m is 0 or 1. Y ^- is an anionic group, preferably a halogen ion,
It is an alkyl sulfate ion or a fatty acid ion having 1 to 3 carbon atoms. ]

[0025]

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[In the formula, two or more, preferably two, of R ^{10 to} R ¹³ are an alkyl group having 8 to 10 carbon atoms, and the other is an alkyl group or a hydroxyalkyl group having 1 to 3 carbon atoms. And preferably a methyl group, an ethyl group and a hydroxyethyl group. Y ⁻ is an anionic group, preferably a halogen ion, an alkyl sulfate ion having 1 to 3 carbon atoms, or a fatty acid ion. ].

In the general formula (II), when X is a paraphenylene group (—C ₆ H ₄ —) and m = 1, R ³ preferably has 5 to 16 carbon atoms, more preferably 6 to 13 carbon atoms. most preferably an alkyl group of 7-10 carbon atoms, R ⁷
Preferably _{^{- (O-R 9) n}} - is a group, R ⁹ is preferably an ethylene group, n is preferably a number of 1 to 5, R ⁴ and R ⁵ are preferably methyl or hydroxy It is an ethyl group and R ⁶ is preferably a methylene group. Further, in the general formula (II), when m = 0 or X is -COO-, -OCO-, -CONH-, -NHC
When m = 1 at O—, R ³ preferably has 7 to 1 carbon atoms.
8, more preferably an alkyl group having 9 to 17 carbon atoms, most preferably an alkyl group having 11 to 16 carbon atoms, R ⁷ is preferably a methylene group, and R ⁴ and R ⁵ are preferably a methyl group or a hydroxyethyl group. And R ⁶ is preferably a methylene group.

In the general formula (III), R ⁸ is preferably an alkyl group having 8 to 18 carbon atoms, more preferably 11 to 17 carbon atoms.

In the general formula (IV), preferably, two of R ^{10 to} R ¹³ are an alkyl group having 8 to 10 carbon atoms, and the other two are a methyl group or a hydroxyethyl group.

In the present invention, the compound of the general formula (IV) can be used alone, but it is preferable to use in combination with at least one of the compounds of the general formulas (II) and (III) in terms of the effect, Is [compound of general formula (IV)] / [compound of general formula (II) + compound of general formula (III)] = 1/10
-10/1, particularly preferably 1 / 5-5 / 1.

The solubility is determined by weighing 1 g of the component (c) and adding water at 20 ° C. until the component (c) is completely dissolved, whereby the number of grams of the component (c) in 100 g of water is determined. You can ask.

Examples of (c-3) include one or more compounds selected from 2- (4-thiocyanomethylthio) benzimidazole, polylysine, polyhexamethylene biguanilide, and chlorhexidine glucuronate.

The liquid detergent composition of the present invention comprises, as a surfactant, a nonionic surfactant other than the component (a);
A cationic surfactant and an amphoteric surfactant other than the component (c) may be blended.

Examples of the nonionic surfactant other than the component (a) include aliphatic alcohols having 8 to 20 carbon atoms in the alkyl group, fatty acids and fatty acid alkyl esters having 9 to 21 carbon atoms in the alkyl group, and alkyl groups. Has 8 to 2 carbon atoms
A compound obtained by adding ethylene oxide (hereinafter referred to as EO) or propylene oxide (hereinafter referred to as PO) to a compound having at least one atom having a lone pair of electrons, such as an aliphatic amine of 0, according to a conventional method, and a polyol derived from a saccharide as a hydrophilic group. Or a fatty acid amide type is generally used.

As the nonionic surfactant other than the component (a), at least one of the following non-ionic surfactants represented by the following general formulas (V) and (VI) is preferable. R ¹⁴ O (EO) _m H (V) wherein R ¹⁴ has an average carbon number of 8 to 20, preferably 10 to
18 primary branched alkyl groups or secondary alkyl groups. EO is ethylene oxide, and m is 5 to 20 as an average number of moles added. R ¹⁴ (EO) _k / (PO) _l H (VI) wherein R ¹⁴ has an average carbon number of 8 to 20, preferably 10 to 10
18 primary alkyl groups. EO indicates ethylene oxide, and PO indicates propylene oxide. k and l are average number of moles added, k is 5 to 15, and l is 1 to 5.
EO and PO are added randomly or after adding EO, then PO
May be added, or a block adduct such as the reverse may be added. ].

As the nonionic surfactant of the general formula (V) or (VI), commercially available nonionic surfactants may be used, and R ¹³ synthesized by a known method or derived from natural fats and oils may be used. Or an alcohol having an alkyl group of R ¹⁴
It can be produced by adding O or EO and PO by a known method.

The method of adding EO and PO is random, a block, or the end at the time of block addition is E.
The properties of the liquid detergent composition of the present invention vary depending on whether it is O or PO, but in the present invention, the difference between these properties is basically as already known. is there.

The nonionic surfactant is represented by the following general formula (VII)
By using the nonionic surfactant represented by the formula (1), a high detergency can be obtained, especially for erosion and mouth stains. During _{^{R 15 O (EO) p (}} PO) q (EO) r H (VII) [wherein, R ¹⁵ is alkyl or alkenyl group linear 8 to 20 carbon atoms. EO indicates ethylene oxide, and PO indicates propylene oxide. p, q and r represent the average number of moles added, p> 0, q = 1 to 4, r> 0, p + q + r =
6-14, p + r = 5-12. Preferably p + q
+ R = 7-14, p + r = 6-12, q = 1-2. ].

The nonionic surfactant of the general formula (VII) is
Alcohols having an alkyl group of R ¹⁵ synthesized by well-known methods or derived from natural fats and oils can be added to EO, PO
Are added in this order, and then EO is added again to synthesize.

As the nonionic surfactant, in addition to those described above, the following general formula (VIII): R ^16- (OR ¹⁷ ) _x G _y (VIII) wherein R ¹⁶ is a linear or branched chain alkyl group having 8 to 18 carbon atoms, an alkenyl group, or alkylphenyl group, R ¹⁷
Represents an alkylene group having 2 to 4 carbon atoms, G represents a residue derived from a reducing sugar having 5 or 6 carbon atoms, x represents a number having an average value of 0 to 6, and y represents a number having an average value of 1 to 10. And the like, an alkyl polysaccharide surfactant, fatty acid alkanolamide, polyhydroxy fatty acid amide, and the like.

The liquid detergent composition of the present invention preferably contains 5 to 40% by weight of a nonionic surfactant other than the component (a).

In order to improve the feeling, it is preferable to use a cationic surfactant other than the component (c) such as a mono-long chain alkyl quaternary ammonium salt in combination.

Examples of the amphoteric surfactant include amine oxide, alkylcarbobetaine, alkylsulfobetaine, alkylamidohydroxysulfobetaine, alkylamidoamine betaine, and alkylimidazoline betaine.

In the present invention, optional components conventionally known to be incorporated into detergents can be incorporated. As such optional components, alcohols such as ethanol,
Ethylene glycol, glycols such as polyethylene glycol and propylene glycol having a molecular weight of 200 to several thousands or less, para-toluenesulfonic acid, benzoate (which also has an effect as a preservative), and a thickening agent such as urea. Solubilizer; phase adjuster and polyoxyalkylene benzyl ether and polyoxyalkylene phenyl ether for improving detergency; nitrilotriacetate, ethylenediaminetetraacetate as polyvalent carboxylate having divalent metal ion trapping ability; Aminopolyacetates such as iminodiacetic acid, diethylenetriaminepentaacetic acid, glycol ether diaminetetraacetic acid, hydroxyethyliminodiacetic acid and triethylenetetramine hexaacetic acid, malonic acid, succinic acid, diglycolic acid, malic acid, tartaric acid , Citric acid, etc .; A color transfer inhibitor such as lidone; an enzyme such as amylase, protease, lipase, or cellulase; an enzyme stabilizer such as calcium chloride, calcium sulfate, formic acid, or boric acid (boron compound); Tinopearl CBS (manufactured by Ciba Specialty Chemicals); Whytex SA
Fluorescent dyes (manufactured by Sumitomo Chemical Co., Ltd.); silicones for imparting flexibility; silica and silicone as defoamers; antioxidants such as butylhydroxytoluene, distyrenated cresol, sodium sulfite, sodium hydrogen sulfite; Fluorescent dyes; bluing agents; fragrances; antimicrobial preservatives and the like.

The pH of the liquid detergent composition of the present invention is 7.5.
~ 11 (25 ° C) is preferred. The pH is preferably adjusted by blending an alkaline agent. Examples of the alkaline agent include monoethanolamine, diethanolamine, triethanolamine, methyl monoethanolamine, dimethylethanolamine, alkanolamines such as 3-aminopropanol, sodium hydroxide, potassium hydroxide and the like.
Inorganic salts such as sodium silicate and sodium carbonate can be used. In particular, at least one selected from monoethanolamine, sodium hydroxide, and potassium hydroxide is preferable.

[0046]

EXAMPLES Examples 1 to 4 and Comparative Examples 1 to 3 Liquid detergent compositions shown in Table 1 were prepared, and the antibacterial properties, liquid stability and detergency were evaluated using the obtained compositions. .
Table 1 shows the results.

[Evaluation of antibacterial activity] Bacteria (Staphylococcus aureus) precultured in SCDLP medium
The IFO12732) was suspended in sterile distilled water, about ¹⁰⁷
0.1 mL of 〜１０10 ⁸ cells / mL was collected and sterilized with distilled water to a predetermined concentration (antimicrobial agent concentration 1, 5, 10, 25, 5).
(0, 75, 100, 200, 300, 500 ppm) and inoculated into 10 mL of the solution, and allowed to act at room temperature. At regular intervals (5, 10, 15, 30 minutes), one loopful of the bacterial contact solution was collected, and a micro Petri dish containing 0.3 mL of an SCDLP medium for post-culture (manufactured by CORNING, 96-C)
[Dilution rate for each detergent composition: 10 species (concentration) x 4 bacterial contact times (hours)]
= 40 places). After culturing at 37 ° C. for 2 days, the growth of the bacteria was visually observed, and the strength of the effect was determined by the number of sterilized areas. That is, the determination was made by measuring a portion where the bacteria did not grow on the microplanter (maximum 40).

[Evaluation of Liquid Stability] A 50 mL sample bottle (No. 6 wide-mouthed bottle, made of glass, 40 mm in diameter,
(Cylindrical shape 80 mm in height) was filled with 40 mL of the liquid detergent composition of Table 1, and after covering with a lid, it was allowed to stand in a constant temperature room at 25 ° C. for 30 days. The stability of the liquid was visually evaluated based on the following criteria. ；: Uniform liquid phase, excellent in liquid stability. Δ: Appears to be slightly separated or precipitated, but is not so noticeable. X: Separation or precipitation is observed.

[Evaluation of Detergency] (1) Method for Preparing Artificially Contaminated Cloth for Degreasing Evaluation 200 g of triolein was dissolved in 80 L of perclene.
After dipping a # 2003 cloth, it was dried and removed to obtain an artificially stained cloth. (2) Degreasing power evaluation method The artificially stained cloth was cut into 5 cm × 5 cm, and 0.2 g of a detergent composition per one artificially stained cloth was applied over an area of 2 cm × 2 cm. 100r
At pm, the washing time was 10 minutes, the water hardness was 4 ° DH, and the rinse was washed with tap water for 5 minutes. After washing, the portion of the contaminated cloth on which the detergent composition was applied was cut accurately to 2 cm × 2 cm, and a set of five sheets was subjected to Soxhlet extraction using chloroform as a solvent for 12 hours. An uncleaned artificially-stained cloth was similarly cut into 2 cm × 2 cm, and similarly extracted. Chloroform was removed from the extract using an evaporator, and the amount of extracted triolein was determined. The degreasing rate was determined by the following equation.

[0050]

(Equation 1)

◎: Degreasing rate of 75% or more ○: Degreasing rate of 70% or more, less than 75% ×: Degreasing rate of less than 70%

[0052]

[Table 1]

(Note) The components in Table 1 are shown below. ES: polyoxyethylene alkyl ether sulfate (linear alkyl having 12/14 carbon atoms, average number of moles of added EO: 3, sodium salt) AS: alkyl sulfate (carbon atom: 12, sodium salt) LAS: carbon number 10-14 straight-chain alkylbenzene sulfonic acids ・ Fatty acid: coconut fatty acid

[0054]

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Nonionic surfactant 1: carbon number 10 to 1
EO added to an average of 8 moles of a linear secondary alcohol of No. 4 Nonionic surfactant 2: linear primary having 10 to 14 carbon atoms
Non-ionic surfactant 3: straight-chain primary having 10 to 14 carbon atoms.
5 mol of EO on average, 2 mol of PO on average,
EO having blocks added in order of 3 mol on average. Sodium polyacrylate: weight average molecular weight 1000
0 ・ Enzyme: Durazyme 16.0L (Protease, manufactured by Novo Nordisk Bioindustry Co., Ltd.) ・ Fluorescent dye: Tinopearl CBS-X (manufactured by Ciba Specialty Chemicals)

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A01N 43/52 A01N 43/52 47/44 47/44 55/02 55/02 B 61/00 61/00 D C07C 233/18 C07C 233/18 C11D 1/52 C11D 1/52 1/62 1/62 1/65 1/65 3/26 3/26 3/34 3/34 3/37 3/37 (72) Inventor Hiroshi Nishimura 1334 Minato, Wakayama City, Wakayama Prefecture, Kao Corporation Research Institute (72) Inventor Kazutoshi Ide, 1334 Minato, Wakayama City, Wakayama Prefecture Kao Corporation Laboratory F-term (reference) 4H003 AB19 AB27 AB31 AC08 AC13 AC23 AE05 AE06 AE07 BA12 DA01 EB07 EB12 EB20 EB21 EB30 EB38 EC02 ED02 FA16 FA34 4H006 AA03 AB70 BN10 BP10 BV22 4H011 AA02 BA05 BB06 BB09 BB11 BB16 BB19 BC06 BC08 DA02 DG16

Claims (4)

[Claims] (1) 1 to 50% by weight of a nonionic surfactant represented by the following general formula (I), and (b) an anionic surfactant 1 to
A liquid detergent composition comprising 50% by weight and (c) 0.1 to 20% by weight of an antibacterial agent. Embedded image [Wherein, R is a hydrocarbyl group having 7 to 21 carbon atoms, R ¹ is a hydrocarbyl group having 2 to 8 carbon atoms, and R ²
Is a hydrocarbyl group or an oxyhydrocarbyl group having 1 to 8 carbon atoms, and Z is a polyhydroxyhydrocarbyl group having 3 to 10 carbon atoms having at least 2 hydroxyl groups. ] 2. The antibacterial agent (c) comprises the following (c-1) to (c-
The liquid detergent composition according to claim 1, which is at least one selected from the antibacterial compounds of 3). (C-1) The solubility in water 100 g at 20 ° C. is 1 g.
Hereinafter, a water-insoluble compound having a molecular weight of 100 to 420 and containing no quaternary ammonium group, and having a melting point of 40
(C-2) 1 g of solubility in 100 g of water at 20 ° C.
As described above, a water-soluble cationic antibacterial compound having at least one alkyl group having 8 to 16 carbon atoms (c-3) 2- (4-thiocyanomethylthio) benzimidazole, polylysine, polyhexamethylene biguanilide, and chlorhexidine glucuronate One or more antibacterial compounds selected from 3. The antibacterial compound (c-2) has the following general formula:
At least one compound selected from the compounds of (II) to (IV)
The liquid detergent composition according to claim 2. Embedded image[Wherein, R^ThreeAnd R⁸Is an alkyl group having 5 to 19 carbon atoms or
An alkenyl group; ^Four, R^FiveIs alk having 1 to 3 carbon atoms
Or a hydroxyalkyl group. X is -COO
-, -OCO-, -CONH-, -NHCO- orIt is. R⁶Is an alkylene group having 1 to 3 carbon atoms;⁷
Is an alkylene group having 1 to 6 carbon atoms or-(OR⁹)_n-
You. Where R⁹Is an ethylene group or a propylene group,
n is a number from 1 to 10. m is 0 or 1. Y^-Is
It is an anionic group. [Formula 4][Wherein, R^Ten~ R¹³Two or more of which have 8 to 10 carbon atoms
An alkyl group, other than which, an alkyl group having 1 to 3 carbon atoms
Or a hydroxyalkyl group. Y^-Is an anionic group
It is. ] 4. The compound according to claim 1, wherein Z in the general formula (I) is a group derived from a compound selected from the group consisting of glucose, fructose, maltose, lactose, galactose, mannose, xylose and glycerol. The liquid detergent composition according to claim 1.