JP5808207B2 - Liquid detergent composition - Google Patents

Description

  The present invention relates to a liquid detergent composition. In particular, the present invention relates to a liquid detergent composition excellent in sterilization of cooking utensils and cleaning tools in commercial facilities.

  Although very high hygiene management is required around the kitchens of commercial facilities, as a result of field surveys, it is known that bacteria are likely to remain in cooking utensils such as cutting boards and cleaning tools such as sponges. In addition, the cleaning tool is a place where bacteria can easily propagate, and there is a concern that the bacteria grown by the cleaning tool may cross-contaminate cooking utensils, tableware, and food. Therefore, antibacterial cleaning tools are required. Conventionally, it has been proposed to impart antibacterial properties to a liquid detergent composition used for washing dishes and cooking utensils, and using such a liquid detergent composition can clean sponges and the like used for washing. It also leads to antibacterial tools.

  Patent Document 1 describes a technique of a sterilizing detergent that uses an anionic surfactant and a biguanide sterilizer in combination. Patent Document 2 discloses a liquid detergent composition containing a cationic bactericidal agent, an anion and a hydrotrope. Patent Document 3 discloses a biocidal detergent composition containing a surfactant having an alkyl group and a sugar residue and an amphoteric surfactant and containing a biguanide or a quaternary ammonium compound as a biocide. Yes.

JP 2000-26894 A JP 2002-53899 A JP-T-2004-526833

  As described above, it has been found that a large number of bacteria are detected in the cleaning tool around the kitchen of a commercial facility. However, even if the cleaning tool is contaminated with bacteria, it is considered that cross contamination of dishes, cooking utensils, and food can be reduced by reducing the number of bacteria in the cleaning tool.

  Cleaning tools used in kitchens for commercial facilities have a much higher soil load than those used in general households, and there are many biofilms in cleaning tools made of porous materials such as sponges. Therefore, a higher level of antibacterial activity is required to sufficiently disinfect the cleaning tool using a cleaning agent.

  In addition, conventional bactericide-containing cleaning agents are very poor in foaming and cleaning sustainability when hand-washing with a cleaning tool such as a sponge. In order to solve this, it is common to add an anionic surfactant, but it not only inhibits the bactericidal effect of the cationic bactericidal agent, but also forms a complex in the liquid composition and causes turbidity and precipitation. Often affects stability, especially storage stability at low temperatures.

  Even in a detergent containing a nonionic surfactant, it is common to improve the detergency using an anionic surfactant. It is also common practice to give such cleaning agents an antibacterial effect. However, when a cationic antibacterial agent is used in combination with an anionic surfactant as an antibacterial agent, not only the antibacterial effect is inhibited, but also the detergency of the anionic surfactant is significantly reduced. In particular, the biguanide antibacterial agent has a remarkable decrease in antibacterial effect.

  The bactericidal cleaning agent using the anionic surfactant and the biguanide bactericidal agent of Patent Document 1 not only provides a sufficiently satisfactory bactericidal effect but also does not satisfy the detergency. In particular, the above-mentioned tendency is remarkable in cleaning with a high dirt load such as oil stains such as a dishwashing detergent. Similarly, the liquid detergent composition using polylysine disclosed in Patent Document 2 also has a problem of achieving both a high antibacterial effect and a high cleaning effect by forming a complex with an anion. Similarly, the biocidal cleaning composition using the alkylpolyglycoside, amphoteric surfactant and biguanide fungicide of Patent Document 3 also has a problem in cleaning effect in a high soil load due to a small amount of anionic surfactant. Remains.

  In addition, in detergents containing nonionic surfactants, when an anionic surfactant and a cationic antibacterial agent are used in combination, a complex is formed in the liquid composition and stability such as turbidity and precipitation, especially storage at low temperatures Often affects stability.

  An object of the present invention is to provide a liquid detergent composition having excellent cleaning properties and antibacterial properties in cleaning with a high soil load such as oil stains, and excellent storage stability at low temperatures.

The present invention
(A) 10 to 50% by mass of a nonionic surfactant [hereinafter referred to as component (a)]
(B) 0.25 to 5% by mass of an anionic surfactant (hereinafter referred to as component (b)),
(C) 0.01 to 2% by mass of one or more selected from polyhexamethylene biguanide, polyhexamethylene biguanide acid salt, polylysine, and polylysine acid salt (provided that polyhexamethylene biguanide acid salt or polylysine The amount of acid salt is the amount of polyhexamethylene biguanide or polylysine, respectively)
(D) a cationic surfactant (hereinafter referred to as component (d)), and
(E) Amphoteric surfactant [hereinafter referred to as component (e)]
Containing
The molar ratio (b) / (d) of the content of (b) and the content of (d) is 0.1 to 1.0,
The molar ratio (d) / (e) of the content of (d) and the content of (e) is 0.20-5,
The present invention relates to a liquid detergent composition.

  ADVANTAGE OF THE INVENTION According to this invention, the liquid cleaning composition which has the outstanding washing | cleaning property and antibacterial property, and was excellent in the storage stability under low temperature in washing | cleaning with high dirt load, such as oil stains, is provided.

<(A) component>
The component (a) of the liquid detergent composition of the present invention is a nonionic surfactant. As the component (a), alkyl polyglycoside, polyoxyalkylene alkyl ether, polyoxyalkylene alkenyl ether, and alkyl glyceryl ether are preferable from the viewpoint of detergency.

Examples of the alkyl polyglycoside include a compound of the general formula (a1).
R ^1a- (OR ^2a ) _s G _t (a1)
[Wherein, R ^1a is a linear alkyl group having 8 to 16 carbon atoms, and R ^2a is an alkylene group having 2 to 4 carbon atoms. G represents a group derived from a reducing sugar. s is an average addition mole number, and shows the number of 0-5, t is an average degree of condensation, and shows the number of 1-3. ]

From the viewpoint of detergency, in general formula (a1), R ^1a is preferably a linear alkyl group having 10 to 16 carbon atoms, and particularly preferably a linear alkyl group having 12 to 14 carbon atoms. . Further, s is preferably 0 to 3, more preferably 0 to 2, and particularly preferably 0. R ^2a is preferably an ethylene group.

  In the general formula (a1), G is a group derived from a reducing sugar, and more specifically a glycoside group. The reducing sugar as a raw material may be either aldose or ketose, and examples thereof include triose, tetrose, pentose, and hexose having 3 to 6 carbon atoms. Specific examples of aldose include apiose, arabinose, galactose, glucose, lyxose, mannose, galose, aldose, idose, talose, and xylose. Examples of ketose include fructose. Among these, in the present invention, from the viewpoint of detergency, aldopentose or aldohexose having 5 or 6 carbon atoms is particularly preferred, and glucose is most preferred.

  In general formula (a1), t represents the average degree of condensation of sugars, preferably a number of 1 to 2, particularly a number of 1 to 1.5.

The compound of the general formula (a1) can be easily synthesized by acetalizing or ketalizing the above sugar and R ^1a — (OR ^2a ) _s —OH using an acid catalyst. In the case of an acetalization reaction, a hemiacetal structure or a normal acetal structure may be used.

Examples of nonionic surfactants including polyoxyalkylene alkyl ethers and polyoxyalkylene alkenyl ethers include compounds represented by the following general formula (a2).
R ^3a —O— (AO) _q —H (a2)
[Wherein, R ^3a is an alkyl group or alkenyl group having 8 to 16 carbon atoms, AO is an alkyleneoxy group having 2 to 3 carbon atoms, and q is an average added mole number, and is a number of 1 to 30]

From the viewpoint of detergency, in general formula (a2), R ^3a preferably has 10 to 14 carbon atoms, and preferably an alkyl group. AO is preferably an ethyleneoxy group or a propyleneoxy group, and more preferably an ethyleneoxy group. q is preferably 1 to 25, more preferably 1.5 to 25, further 5 to 25, further 10 to 24, further 15 to 23, and further preferably 20 to 22.

Examples of the alkyl glyceryl ether include monoalkyl glyceryl ethers, preferably monoalkyl glyceryl ethers having an alkyl group having 6 to 10 carbon atoms, and compounds represented by the following general formula (a3).
_{^{R 4a -O- (CH 2 CH (}} OH) CH 2 O) r -H (a3)
[Wherein, R ^4a represents an alkyl group having 6 to 10 carbon atoms, r represents an average number of added moles, and represents a number of 1 to 4. ]

From the viewpoint of detergency, R ^4a in the general formula (a3) is preferably a branched alkyl group having 6 to 10 carbon atoms, more preferably a group selected from 2-ethylhexyl group, isononyl group and isodecyl group, and 2-ethylhexyl group. Alternatively, an isodecyl group is more preferable, and a 2-ethylhexyl group is particularly preferable. r is preferably 1 to 3, more preferably 1 to 2, and most preferably a compound of r = 1. Particularly preferred compounds are those in which R ^4a is a 2-ethylhexyl group and r = 1.

In order to obtain the compound of the general formula (a3), for example, a branched alkyl alcohol selected from 2-ethylhexanol, isononanol or isodecanol and an epoxy compound such as epihalohydrin or glycidol, an acid catalyst such as BF ₃ , or an aluminum catalyst is used. It is possible to use a method in which the reaction is carried out. When 2-ethylhexanol is used, the resulting 2-ethylhexyl monoglyceryl ether is a mixture that can contain a plurality of products as described in JP-A-2001-49291. As ethylhexyl monoglyceryl ether, a compound in which 2-ethylhexanol is added to the 1-position of an epoxy compound (3- (2-ethylhexyloxy) -1,2-propanediol, hereinafter referred to as (a3-1)) or an epoxy compound 2 Compound added to the position (2- (2-ethylhexyloxy) -1,3-propanediol, hereinafter referred to as (a3-2)), and (a3-1) or (a3-2) further epoxy as a by-product It is a mixture that may also contain a polyaddition compound (hereinafter referred to as (a3-3)) to which a compound has been added. The mixture containing 2-ethylhexyl monoglyceryl ether which is the component (a) of the present invention may be used as it is, or may be used after further purification.

  In the present invention, if a compound other than the component (a3-1) which is the component (a) is contained in a large amount, the effect of the present invention may be impaired. In particular, the content of the polyaddition compound (a3-3) is required. Is not more than 1/99, preferably not more than 0.5 / 99.5, particularly preferably not more than 0.1 / 99.9 in terms of mass ratio of (a3-3) / (a3-1). .

  As a method for reducing (a3-3), the method described in JP-A No. 2001-49291 can be exemplified, and a method of removing (a3-3) by distillation purification can be employed. .

  In the present invention, from the viewpoint of detergency, the component (a) preferably contains one or more selected from the group consisting of alkyl polyglycosides, polyoxyalkylene alkyl ethers, and alkyl glyceryl ethers. Furthermore, it is preferable to contain alkyl polyglycoside and alkyl glyceryl ether as component (a) from the viewpoint of detergency.

<(B) component>
The liquid detergent composition of the present invention contains an anionic surfactant as the component (b). Examples of the component (b) include an anionic surfactant having a hydrocarbon group. As the component (b), from the viewpoint of detergency, an anionic compound having a hydrocarbon group having 6 to 22 carbon atoms, an anionic surfactant having a hydrocarbon group having 6 to 22 carbon atoms, carbon An anionic surfactant having a hydrocarbon group of several tens to 16 and a sulfonic acid group or a sulfate ester group is preferred.

  As the component (b), from the viewpoint of detergency, an alkylbenzene sulfonic acid having an alkyl group having 10 to 16 carbon atoms or a salt thereof, a monoalkyl sulfate ester salt having 10 to 16 carbon atoms, or an alkyl group having 10 to 16 carbon atoms. A polyoxyalkylene alkyl ether sulfate ester having an average of 1 to 4 moles of an oxyalkylene group having 2 or 3 carbon atoms, an α-olefin sulfonate having 8 to 16 carbon atoms, an α-sulfo fatty acid (8 carbon atoms) -16) Lower alkyl (C1-C3) ester salt, toluenesulfonic acid or its salt, C8-C12 alkenyl succinic acid or its salt, etc. can be mentioned. Examples of the salt include sodium salt, potassium salt, magnesium salt and alkanolamine salt. Of these, sodium salts, potassium salts, and magnesium salts are preferable from the viewpoint of stability, and sodium salts and magnesium salts are preferable from the viewpoint of detergency.

<(C) component>
From the viewpoint of sterilization, the liquid detergent composition of the present invention contains at least one selected from polyhexamethylene biguanide, polyhexamethylene biguanide acid salt, polylysine, and polylysine acid salt as component (c). To do.

  Examples of the polyhexamethylene biguanide include compounds represented by the following general formula (c1).

[Wherein R ^1c is a hexamethylene group, n is a number of 2 to 14, preferably 10 to 14, more preferably 11 to 13, and still more preferably 12. ]

  The acid salt of polyhexamethylene biguanide is a partial acid salt or a full acid salt. Examples of the acid salt of polyhexamethylene biguanide include compounds represented by the following general formula (c2).

[Wherein R ^1c is a hexamethylene group, m is a number of 2 to 14, preferably 10 to 14, more preferably 11 to 13, and further preferably 12. n is a number of 1 to 5 m, preferably n is a number of 2 to 3 m, more preferably n is a number of m to 2 m, and more preferably n is m. HY represents an organic acid or an inorganic acid, preferably hydrochloric acid, gluconic acid, or acetic acid, and more preferably hydrochloric acid. ]

  Examples of polylysine include α-poly-L-lysine, ε-poly-L-lysine, and ε-poly-D-lysine. Any of the above polylysines can be used. In the present invention, α-poly-L-lysine and ε-poly-L-lysine can be preferably used from the viewpoint of safety. In particular, ε-poly-L lysine represented by the following formula is preferable from the viewpoint of safety.

[In formula, p is a number of 5-100, 10-50 are preferable and 13-27 are more preferable. ]

  ε-Poly-L lysine is a polypeptide obtained by culturing a microorganism belonging to the genus Streptomyces and condensing lysine, which is an essential amino acid for the human body. When this polylysine is hydrolyzed by an enzyme in the body, it becomes L-lysine, which is the original component, so that the safety is very high.

  As the polylysine, any of a free form and a form of a salt of an inorganic acid or an organic acid can be used. In the case of a salt form, hydrochloric acid, gluconic acid and acetic acid are preferred, and hydrochloric acid is more preferred.

As polylysine, what was processed with the excipient | filler and the extender in order to handle easily can be used.
<(D) component>
The liquid detergent composition of the present invention contains a cationic surfactant as component (d). Specifically, alkyltrimethylammonium salt, dialkyldimethylammonium salt, triethanolamine difatty acid ester quaternary salt, fatty acid monoester monoamide salt of N-hydroxyethyl-N-methyl-propanediamine, alkylbenzyldimethylammonium salt, Examples thereof include alkyl pyridinium salts, polyethylene polyamines, and benzethonium chloride. The component (d) has one or two hydrocarbon groups having 8 to 20 carbon atoms (preferably alkyl groups or alkenyl groups) as four groups bonded to the nitrogen atom from the viewpoint of stability. A quaternary ammonium type surfactant in which the remainder is an alkyl group having 1 to 3 carbon atoms, a hydroxyalkyl group having 1 to 3 carbon atoms, or a benzyl group is preferable.

  Among them, a cationic surfactant having a bactericidal property is preferable, and a cationic surfactant having a bactericidal property is represented by a cationic surfactant represented by the following general formula (d1) and a general formula (d2). And at least one cationic surfactant selected from cationic surfactants.

[In the formula, any one or two of R ^{1d to} R ^4d is a linear or branched alkyl or alkenyl group having 8 to 16 carbon atoms, or

And the rest are the same or different and are an alkyl group having 1 to 3 carbon atoms, a benzyl group, a hydroxyalkyl group having 1 to 3 carbon atoms, or a formula — (CH ₂ CH ₂ O) _m H ( m represents an average number of moles of ethylene oxide added and represents 2 to 20), R ^5d represents a linear or branched alkyl or alkenyl group having 12 to 18 carbon atoms, and X ⁻ represents a halogen atom. A group that becomes an ion, preferably a chlorine ion, or an organic anion. ]

  (D) As a component, from the viewpoint of detergency and bactericidal properties, dialkyl (8 to 16 carbon atoms) dimethylammonium halide, benzalkonium chloride (having an alkyl group having 8 to 16 carbon atoms), benzethonium chloride or these Cationic surfactants in which the counter ion is converted to another anion are preferred.

As the component (d), a cationic surfactant represented by the general formula (d1) is preferable from the viewpoint of detergency and bactericidal properties, and R ^{1d to} R ^4d in the general formula (d1) have 8 to 8 carbon atoms. More preferably, it has two 10 straight-chain alkyl groups and the rest are methyl groups.

<(E) component>
The liquid detergent composition of the present invention contains an amphoteric surfactant as the component (e). Examples of amphoteric surfactants include amine oxides such as alkylamine oxides, betaines such as alkylaminoacetic acid betaines, alkylamidopropylbetaines, alkylhydroxysulfobetaines, and amide amino acids (imidazoline betaines). (E) A component can contain 1 or more types chosen from these. The component (e) is preferably amine oxide and / or betaine from the viewpoints of detergency and stability.

  As the amine oxide, an amine oxide having a hydrocarbon group having 8 to 18 carbon atoms is preferable. Specifically, the compound represented by the following general formula (e1) is mentioned.

[Wherein, R ^1e is a hydrocarbon group having 8 to 18 carbon atoms, preferably an alkyl group or alkenyl group having 8 to 16 carbon atoms, R ^2e is an alkylene group having 1 to 6 carbon atoms, and D is − It is a group selected from (CO) O-,-(CO) (NH)-, -O (CO)-, and-(NH) (CO)-. k is a number of 0 or 1, and R ^3e and R ^4e are each an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group. ]

In the general formula (e1), R ^1e is preferably an alkyl group or an alkenyl group having 10 to 14 carbon atoms, more preferably a lauryl group (or lauric acid residue) and / or a myristyl group (or myristic acid residue). ). D is preferably-(CO) O- or-(CO) (NH)-, more preferably-(CO) (NH)-. R ^2e preferably has 2 or 3 carbon atoms, and R ^3e and R ^4e are preferably methyl groups.

  As betaine, betaine which has a C8-C18 hydrocarbon group is preferable. Specific examples include compounds represented by the following general formula (e2).

[Wherein, R ^5e is a hydrocarbon group having 8 to 18 carbon atoms, preferably an alkyl group or an alkenyl group, and R ^6e is an alkylene group having 1 to 6 carbon atoms. E is a group selected from-(CO) O-,-(CO) (NH)-, -O (CO)-,-(NH) (CO)-, -O-, and j is 0 or 1 Is a number. R ^7e and R ^8e are each an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group, and R ^9e is an alkylene group having 1 to 5 carbon atoms which may be substituted with a hydroxy group. T is a group selected from —SO ₃ ⁻ , —OSO ₃ ⁻ and —COO ⁻ . ]

In general formula (e2), R ^5e is preferably an alkyl or alkenyl group having 9 to 17 carbon atoms, more preferably 10 to 16 carbon atoms. R ^6e preferably has 1 to 4 carbon atoms, more preferably 2 or 3 alkylene group, and j is preferably 0. R ^7e and R ^8e are preferably a methyl group, an ethyl group or a hydroxyethyl group. R ^9e is preferably an alkylene group having 1 to 3 carbon atoms which may be substituted with a hydroxy group. T is preferably —SO ₃ ^{— in view} of the cleaning effect.

<Liquid cleaning composition>
The liquid detergent composition of the present invention is preferably liquid at any temperature in the temperature range of −10 ° C. to 60 ° C. Specifically, a fluid having a viscosity of 3000 mPa · s or less is preferable at any temperature in a temperature range of −10 ° C. to 60 ° C., more preferably 1000 mPa · s or less, and further 500 mPa · s or less. It is preferable that it is 200 mPa · s or less. Moreover, it is preferable that it is 1 mPa * s or more from a viewpoint of washing | cleaning workability | operativity. The viscosity can be measured with a B-type viscometer.

  From the viewpoint of workability such as refilling and quality maintenance, the liquid detergent composition of the present invention maintains transparency without being frozen or separated even in a low temperature environment such as −5 ° C. preferable. Furthermore, the liquid detergent composition of the present invention is preferably stable even when stored for 20 days in an environment of -5 ° C.

  The liquid detergent composition of this invention contains 10-50 mass% of (a) component. The content of the component (a) is preferably 15 to 40% by mass and more preferably 20 to 35% by mass from the viewpoint of detergency.

  The liquid detergent composition of the present invention contains 0.25 to 5% by mass of component (b). The content of the component (b) is preferably 0.5 to 5% by mass and more preferably 2 to 4.5% by mass from the viewpoint of stability.

  The liquid detergent composition of the present invention comprises (c) component in an amount of 0.01 to 2% by mass (provided that the amount of polyhexamethylene biguanide acid salt or polylysine acid salt is polyhexamethylene biguanide converted or polylysine, respectively. (Conversion amount) The content of the component (c) is preferably 0.05 to 1% by mass and more preferably 0.1 to 1% by mass from the viewpoint of sterilization.

  The content of the component (d) in the liquid detergent composition of the present invention is preferably 0.5 to 10% by mass from the viewpoint of sterilization and stability. Furthermore, it is preferable that it is 1-7 mass%, and it is more preferable that it is 2-5 mass%.

  The content of the component (e) in the liquid detergent composition of the present invention is preferably 1 to 10% by mass from the viewpoints of detergency and stability. Furthermore, it is preferable that it is 1.5-8.5 mass%, and it is more preferable that it is 2-8 mass%.

  In the liquid detergent composition of the present invention, the molar ratio (b) / (d) of the content of the component (b) and the content of the component (d) is 0.1 to 1.0. This molar ratio (b) / (d) is preferably 0.5 to 1.0, and more preferably 0.75 to 0.95, from the viewpoints of sterilization and stability. Note that the number of moles when a plurality of components are used as the component (b) and / or the component (d) is determined from the sum of the number of moles of each component.

  In the liquid detergent composition of the present invention, the molar ratio (d) / (e) of the content of the component (d) and the content of the component (e) is 0.20-5. The molar ratio (d) / (e) is preferably 0.4 to 2, and more preferably 0.5 to 1, from the viewpoints of detergency and sterilization. In addition, the number of moles when a plurality of components are used as the component (d) and / or the component (e) is determined from the sum of the number of moles of each component.

  In the present invention, a solvent [hereinafter referred to as component (f)] can be contained as a storage stability improver or a viscosity modifier. Specific examples of the solvent include water-soluble organic solvents selected from ethanol, isopropyl alcohol, ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, glycerin, isoprene glycol, propylene glycol monomethyl ether, propylene glycol monoethyl ether, Ethanol is preferred. (F) Content of component is 1-10 mass% in a composition, Furthermore, 3-7 mass% is preferable.

  As other components, as long as the viscosity characteristics are not affected, components that are usually blended in liquid detergents can be blended. For example, a rust preventive such as sodium sulfite, a fragrance, and a pigment are also blended in a range that does not affect the effect of the present composition.

  The liquid detergent composition of the present invention may be in a liquid form in which the above components are dissolved or dispersed in water, and the water content may be the balance of the composition. Further, the pH of the liquid detergent composition of the present invention at 25 ° C. is 6.0 to 8.0, more preferably 6.0 to 7.0.

  In this invention, the outstanding effect can be acquired in the washing | cleaning of the tableware and cooking utensil in a place where higher hygiene management is desired, such as a kitchen of a business facility. Usually, cleaning tools used in commercial facilities such as kitchens tend to propagate bacteria more easily than those used in general households due to differences in frequency of use and types of dirt, but the liquid cleaning agent of the present invention. By using the composition, it is possible to effectively suppress the growth of bacteria even in a cleaning tool used in a commercial facility kitchen or the like. Moreover, in the liquid detergent composition of this invention, it becomes what was excellent also in detergency and low temperature stability. This is considered to be because the composition containing the components (a) to (e) of the present invention in a specific quantitative ratio can dissolve and disintegrate the biofilm and sufficiently sterilize the bacteria themselves. Moreover, it is guessed that the combination of the specific quantity ratio of (a)-(e) component is contributing not only to disinfection and the improvement of a detergency but also to the improvement of low temperature stability.

  Liquid detergent compositions were prepared at the ratios listed in Tables 1-3. A pH measurement composite electrode (HORIBA glass sliding sleeve type) was connected to a pH meter (HORIBA pH / ion meter F-52), and the pH (25 ° C.) of the composition was changed to “JIS K 3362 8.3”. It was measured by the pH measurement method. In addition, a rotor No. is added to a B-type viscometer (B-type viscometer model BM manufactured by TOKIMEC INC.). Prepare the one equipped with the rotor of 2, fill the viscosity detergent beaker in the table into a beaker for viscosity measurement, adjust the temperature sufficiently in a constant temperature water bath of 20 ° C, and then enter the temperature adjusted composition The beaker was set in a viscometer, and the viscosity after 60 seconds was measured at a rotor rotational speed of 60 r / min.

  Using the prepared liquid detergent composition, (1) detergency test, (2) sterilization test, and (3) low temperature stability evaluation were performed in the following manner. The results are shown in Tables 1-3.

(1) Detergency test A commercially available new sponge (115 mm x 75 mm x 35 mm flexible absorber, trade name: Kikuron, distributor: Kikuron Co., Ltd.) is rinsed with tap water, and the content of tap water is about After squeezing to 10 g, 1 g of the composition and about 20 g of tap water were soaked (the total content of tap water after squeezing and the amount of tap water to be soaked was 30 g). After the sponge has been bubbled 2 to 3 times with a model soiled table prepared in advance (1 g of beef tallow / rapeseed oil = 1/1 (mass ratio) uniformly applied to a ceramic dish), the model soiled. The attached tableware was scrubbed and rinsed with running tap water adjusted to 30 ° C. at 4 L / min for 30 seconds to determine the number of sheets that could be washed (if there was no null on the dish after rinsing, it was determined that washing was possible) To do).

(2) Bactericidal test Pseudomonas aeruginosa NBRC13275 was pre-cultured at 37 ° C./18 hours using LB medium (Nihon Becton Dickinson Co., Ltd.) and grown in 10 mL of physiological saline. After suspending, the number of bacteria in 1 mL of the bacterial solution was measured and used as the initial number of inoculated bacteria.

To a model soil obtained by mixing 10 g of commercially available chicken mince and 100 mL of sterilized water with a juicer, 1 mL of a bacterial solution and 1 mL of a composition are added, and a commercially available new sponge (115 mm × 75 mm × 35 mm flexible absorbent, product name: Kikuron, (Sold by Kikuron Co., Ltd.) for 1 minute, lightly squeeze and leave for 5 hours. Then, after rinsing with running tap water for 10 seconds, 2 g of the composition was squeezed into the sponge and allowed to stand overnight, and then the sponge was squeezed and squeezed out with 100 mL of LP diluent (product name: LP diluent “DAIGO” manufactured by Nippon Pharmaceutical Co., Ltd.) The number of bacteria in 1 mL of the squeezed solution was measured (the number of bacteria after the operation), the quotient of (the number of the initial inoculum) / (the number of the bacteria after the operation) was obtained, and the logarithm with the base of 10 as the sterilization activity value . That is, the sterilization activity value is calculated by the following formula. A larger value in the table means higher disinfection activity.
Bactericidal activity value = Log ₁₀ [(initial number of inoculated bacteria) / (number of bacteria after operation)]

(3) Low temperature stability evaluation An 11 standard bottle (PS-No. 11, manufactured by Ishida Container) was filled with 100 mL of the composition and stored in a temperature-controlled room adjusted to -5 ° C. for 20 days, and then the change in the appearance of the composition was evaluated according to the following criteria. did.
3: No change 2: Turbidity occurred 1: Precipitation occurred

(Note) The components in the table are as follows. (B) The component showed the amount of acid type compound conversion.
Alkyl polyglycoside: linear alkyl (C10-16) polyglycoside (average condensation degree 1.40)
Polyoxyethylene (EOp21) dodecyl ether: ethylene oxide average added mole number 21
LAS-S: straight chain alkyl (10 to 16 carbon atoms) benzenesulfonic acid PHMB: polyhexamethylene biguanide hydrochloride (m = 12, n = m in formula (c2))
Polylysine: ε-poly-L-lysine (weight average molecular weight about 2000)
・ Chlorine-based disinfectant: Triclosan ・ Benzalkonium chloride (1): benzyloctyldimethylammonium chloride ・ Benzalkonium chloride (2): Linear alkyl (C12-16) benzyldimethylammonium chloride ・ Alkyltrimethylammonium chloride ( 1): (coconut oil alkyl) trimethylammonium chloride / alkyltrimethylammonium chloride (2): hexadecyltrimethylammonium chloride / alkyltrimethylammonium chloride (3): octadecyltrimethylammonium chloride / dialkyldimethylammonium chloride (1): didodecyldimethyl Ammonium chloride / dialkyldimethylammonium chloride (2): Dioctadecyldimethylan Chloride, dodecyl dimethyl amine oxide: Dodecyl dimethylamine oxide, dodecyl dimethyl hydroxypropyl sulfobetaine 1- dodeca Nami bromide, N-(2-hydroxy-3-sulfopropyl) -N, N-dimethyl, inner salt

Claims (7)

(A) 10 to 50% by mass of a nonionic surfactant,
(B) 0.25 to 5% by mass of an anionic surfactant;
(C) 0.01 to 2% by mass of one or more selected from polyhexamethylene biguanide, polyhexamethylene biguanide acid salt, polylysine, and polylysine acid salt (provided that polyhexamethylene biguanide acid salt or polylysine The amount of acid salt is the amount of polyhexamethylene biguanide or polylysine, respectively)
(D) a cationic surfactant, and
(E) contains an amphoteric surfactant,
The molar ratio (b) / (d) of the content of (b) and the content of (d) is 0.1 to 1.0,
Molar ratio in content and (e) of (d) (d) / ( e) is Ri der 0.20 to 5,
(D) is a quaternary group having one or two hydrocarbon groups having 8 to 20 carbon atoms as the four groups bonded to the nitrogen atom, and the remainder being an alkyl group or benzyl group having 1 to 3 carbon atoms. Ru ammonium type surfactants der,
Liquid detergent composition. As (a), alkyl polyglycosides, polyoxyalkylene alkyl ethers, polyoxyalkylene alkenyl ethers, and the liquid detergent composition of claim 1 Symbol placement contains one or more members selected from the group consisting of alkyl glyceryl ether. The liquid detergent composition according to claim 1 or 2 , wherein (b) is an anionic surfactant having a hydrocarbon group having 10 to 16 carbon atoms and a sulfonic acid group or a sulfate group. The liquid detergent composition according to any one of claims 1 to 3 , wherein (e) is amine oxide and / or betaine. The liquid detergent composition according to any one of claims 1 to 4 , which is used in a commercial facility kitchen. (D) Content of a component is 0.5-10 mass%, The liquid cleaning composition in any one of Claims 1-5. (E) Content of a component is 1-10 mass%, The liquid cleaning composition in any one of Claims 1-6.