JP6013454B2 - Liquid detergent composition - Google Patents

Description

  The present invention relates to a cleaning composition for hair such as shampoo and rinse-in shampoo, body cleaning, hand soap, foam hand soap, cleansing foam and other skin cleaning agents, kitchen detergent, clothing detergent and the like. About.

The liquid detergent composition is less irritating to the skin, has excellent foam performance such as foaming, foam creaminess, and rinsing properties, as well as having a high bactericidal effect against pathogenic bacteria such as Escherichia coli. It is desired. Conventionally, fatty acid salts have been used as cleaning components that have excellent foam performance and a high bactericidal effect against pathogenic bacteria such as Escherichia coli. However, when the fatty acid salt is used in a liquid detergent composition, there is a problem that fatty acid is precipitated due to a decrease in pH, the mesh of the former container is clogged, the rinsing property is decreased, and skin irritation is increased.
Therefore, in order to solve the above-mentioned problems, it has been proposed to use a nitrogen compound to neutralize the counter ion of the fatty acid salt, that is, the fatty acid, to improve the pH drop of the liquid detergent composition that causes precipitation. (See Patent Document 1). According to this proposal, although the pH stability of the liquid detergent composition is improved by using a salt of an alkanolamine of a fatty acid, the bactericidal effect against pathogenic bacteria such as E. coli, rinsing properties, and skin irritation properties are improved. In terms of relaxation, it was insufficient.
Also, a detergent composition containing an anionic surfactant and an alkyl amino acid type surfactant (see Patent Document 2 and Patent Document 4), a detergent composition containing an anionic surfactant and an alkylaminodicarboxylic acid type surfactant. The thing (refer patent document 3 and patent document 5) is proposed.
According to these proposals, a formulation excellent in hypoallergenicity, foaming property, and rinsing property can be realized, but sufficiently satisfactory performance is obtained in terms of bactericidal effect against pathogenic bacteria such as E. coli and pH stability. Did not have.

  Therefore, it is desired to provide a liquid detergent composition that is excellent in bactericidal effect against E. coli, pH stability, foam performance, and rinsing properties, and has little skin irritation.

International Publication No. 2007/145054 Pamphlet JP 2001-172668 A JP 07-138147 A JP 09-227359 A JP 2001-172686 A

  An object of the present invention is to solve the above-described problems and achieve the following objects. That is, an object of the present invention is to provide a liquid detergent composition that is excellent in bactericidal effect against E. coli, pH stability, foam performance, and rinsing properties, and has little skin irritation.

As a result of intensive studies by the present inventors in order to solve the above-mentioned problems, it is selected from (A) a predetermined fatty acid salt and (B) sodium laurylaminopropionate, sodium laurylaminodipropionate and sodium laurylaminodiacetate. By blending at least one amphoteric surfactant with a specific mass ratio (A / B), the predetermined fatty acid salt of the component (A) assists the bactericidal effect on Escherichia coli itself, and the fatty acid salt That can prevent a decrease in pH, which is a problem of a liquid detergent composition using a fatty acid, a fatty acid salt (A ₁ ) in which the fatty acid salt of the component (A) is a monovalent hydrocarbon group having 5 to 12 carbon atoms, and carbon contains the number 13 to 25 monovalent hydrocarbon radical and is a fatty acid salt _{(a 2),} wherein the and _{(a 1)} component _{(a 2)} mass ratio of the component _{(a 1 / a 2) 0} . 8-20 and It is possible to realize good rinsing, good foaming, and no skin irritation, and the content of the fatty acid salt of the component (A) is 1% by mass to 7% by mass, so that the bactericidal effect against E. coli can be achieved. A formulation that is fast rinsing and less irritating to the skin while maintaining (C) at least one selected from (C) ethylenediaminetetraacetic acid, cyclohexanediaminetetraacetic acid, hydroxyethanediphosphonic acid, oxalic acid, and salts thereof By blending a seed chelating agent, the bactericidal effect is improved by capturing the divalent ions on the surface of the bacterial membrane and changing the physical properties of the bacterial membrane, and the divalent ions in the tap water (Ca ²⁺ , Mg ²⁺ etc.) By capturing the above, it is possible to suppress the inactivation of the component (A) and the component (B) and improve foaming. . Preferably (D) By adding polyhydric alcohol to lower the polarity of the solvent, the components (A) and (B) can be stably arranged at the gas-liquid interface, thereby realizing a creamy foam quality. Each was found to be capable of giving a moist and good feel.
The component (A) to the component (C), preferably the component (D), acts synergistically to provide excellent bactericidal effect against Escherichia coli, excellent foaming, foam creaminess, and rinsing properties. In addition, since the skin irritation is low, it has been found that a liquid detergent composition that can be used with peace of mind from a woman with sensitive skin to a child with weak skin can be obtained.

This invention is based on the said knowledge by the present inventors, The liquid cleaning composition of this invention as a means for solving the said subject is represented by (A) following General formula (1). 1% to 7% by weight of fatty acid salt,
R ¹ COOM General formula (1)
(In the general formula (1), ^{R 1} represents a monovalent hydrocarbon group having 5 to 25 carbon atoms, M is an alkali metal, ammonium, and represent any one of alkanolamine Amin.)
(B) at least one amphoteric surfactant selected from sodium laurylaminopropionate, sodium laurylaminodipropionate and sodium laurylaminodiacetate , and (C) ethylenediaminetetraacetic acid, cyclohexanediaminetetraacetic acid, hydroxyethanediphosphone Containing 0.1% by mass to 1% by mass of at least one chelating agent selected from acids, oxalic acid and salts thereof ;
Wherein component (A), the general formula (1) ^{R 1} in the fatty acid salt is a monovalent hydrocarbon group having 5 to 12 carbon atoms _{(A 1),} ^{R 1} carbon atoms in the general formula (1) A fatty acid salt (A ₂ ) that is a monovalent hydrocarbon group of 13 to 25, and a mass ratio (A ₁ / A ₂ ) of the (A ₁ ) component to the (A ₂ ) component is 0.8. And the mass ratio (A / B) between the component (A) and the component (B) is 1 to 9.

  According to the present invention, the above-described problems can be solved and the above-mentioned object can be achieved, and a liquid detergent composition having excellent bactericidal effect against E. coli, pH stability, foam performance, and rinsing properties, and less skin irritation. Things can be provided.

Liquid detergent compositions of the present invention, (A) a fatty acid salt, containing (B) amphoteric surfactant, and (C) a chelating agent preferably contains a polyhydric alcohol (D), further requires Depending on the case, it contains other components.

<(A) Fatty acid salt>
The fatty acid salt of the component (A) is represented by the following general formula (1).
R ¹ COOM General formula (1)
However, the general formula (1), R ¹ represents a monovalent hydrocarbon group having 5 to 25 carbon atoms, M represents an alkali metal, ammonium, and any alkanol Amin.
R ¹ represents a linear or branched monovalent hydrocarbon group having 5 to 25 carbon atoms, preferably 7 to 17 carbon atoms, and may be saturated or unsaturated.
When the carbon number of R ¹ is less than 5, there is no surface activity and foaming and bactericidal power against E. coli may be deteriorated, and when it exceeds 25, bubbling, rinsing performance and bactericidal power against E. coli are poor. May be.

In Formula (1), wherein M represents an alkali metal, ammonium, and any alkanol Amin.
There is no restriction | limiting in particular as said alkali metal, According to the objective, it can select suitably, For example, sodium, potassium, etc. are mentioned.
There is no restriction | limiting in particular as said alkanolamine, According to the objective, it can select suitably, For example, a monoethanolamine, a diethanolamine, a triethanolamine etc. are mentioned .
Among these, examples of the M, the alkali metals are preferred from the viewpoint of bactericidal effects and low-temperature stability against E. coli, potassium is particularly preferable.

(A) the fatty acid salt components, the general formula (1) ^{R 1} in the fatty acid salt is a monovalent hydrocarbon group having 5 to 12 carbon atoms _{(A 1),} ^{R 1} in the general formula (1) Contains a fatty acid salt (A ₂ ) that is a monovalent hydrocarbon group having 13 to 25 carbon atoms, and the mass ratio (A ₁ / A ₂ ) between the (A ₁ ) component and the (A ₂ ) component is It is 0.8-20, and 1-9 are preferable from the point of rinse property, skin irritation, foaming, and creaminess of foam. When the mass ratio (A ₁ / A ₂ ) is less than 0.8, foaming and rinsing properties may deteriorate, and when it exceeds 20, the skin irritation becomes strong and the creamy property of the bubbles deteriorates. May be.

The component (A ₁ ) is not particularly limited as long as R ¹ in the general formula (1) is a fatty acid having a monovalent hydrocarbon group having 5 to 12 carbon atoms, and may be appropriately selected depending on the purpose. For example, capronate (carbon number of R ¹ : 5), caprylate (carbon number of R ¹ : 7), caprate (carbon number of R ¹ : 9), laurate (of R ¹ Carbon number: 11), and the like. These may be used alone or in combination of two or more. Among these, as the component (A ₁ ), caprate and laurate are preferable from the viewpoints of foaming, foam creaminess, and bactericidal activity against E. coli, and are excellent in skin irritation and foam creaminess. And laurate, specifically, potassium laurate is more preferable.

The component (A ₂ ) is not particularly limited as long as R ¹ in the general formula (1) is a fatty acid group having 13 to 25 carbon atoms, and may be appropriately selected depending on the purpose. For example, myristic acid salt (R ¹ carbon number: 13), palmitate (R ¹ carbon number: 15), stearic acid salt (R ¹ carbon number: 17), oleate (R ¹ carbon number: Examples thereof include carbon number: 17), linoleate (carbon number of R ¹ : 17), isostearate (carbon number of R ¹ : 17), behenate (carbon number of R ¹ : 21), and the like. These may be used alone or in combination of two or more. Among these, as the component (A ₂ ), from the viewpoint of foaming, rinsing properties, and bactericidal power against E. coli, myristate and palmitate are preferable, and from the viewpoint of foaming, rinsing properties and stability at low temperatures, Myristate, specifically potassium myristate, is particularly preferred.
Moreover, as the fatty acid salt of the component (A), a mixture of natural fatty acid salts can be used. Examples of the fatty acid salt mixture include coconut oil fatty acid salt, hardened coconut oil fatty acid salt, palm oil fatty acid salt, Examples include hardened palm oil fatty acid salt, palm kernel oil fatty acid salt, hardened palm kernel oil fatty acid salt, beef tallow fatty acid salt, and hardened beef tallow fatty acid salt. Among these, a coconut oil fatty acid salt which is a mixture having a mass ratio (A ₁ / A ₂ ) = about 60 / about 40 is preferable.

The content of the fatty acid salt of the component (A) is 1% by mass to 7% by mass with respect to the total amount of the liquid detergent composition, and is foaming, bactericidal power against E. coli, rinsing properties, and skin irritation points. From 4 mass% to 6 mass% is preferable. When the content is less than 1% by mass, foaming may be deteriorated or the bactericidal power against E. coli may be reduced. When the content exceeds 7% by mass, rinsing properties and skin irritation may be deteriorated. .
The content of the component (A ₁ ) is not particularly limited and may be appropriately selected depending on the intended purpose, but is preferably 0.3% by mass to 6% by mass with respect to the total amount of the liquid detergent composition. 3 mass%-5 mass% are more preferable. If the content is less than 0.3% by mass, the bactericidal power against foamed Escherichia coli may deteriorate, and if it exceeds 6% by mass, rinsing properties and skin irritation may be deteriorated.
The content of the component (A ₂ ) is not particularly limited and may be appropriately selected depending on the purpose. It is preferably 0.1% by mass to 5% by mass with respect to the total amount of the liquid detergent composition. 0.5 mass% to 3 mass% is more preferable. When the content is less than 0.1% by mass, foaming and bactericidal activity against E. coli may be deteriorated. When the content is more than 5% by mass, rinsing properties may be deteriorated.
The fatty acid salt of the component (A) is not particularly limited and can be blended as a fatty acid salt, but the fatty acid and potassium hydroxide, triethanolamine, or monoethanolamine are blended separately. It is good also as a fatty-acid salt by adding in a tank and making it neutralize.

<(B) amphoteric surfactants>
The amphoteric surfactants of prior SL component (B), pH stability, and in terms of bactericidal against E. coli, sodium lauryl amino dipropionate, sodium lauryl amino diacetic acid, is sodium lauryl aminopropionate Preferably, Sodium laurylaminodipropionate and sodium laurylaminodiacetate are particularly preferred.
The amphoteric surfactant of the component (B), may be used those appropriately synthesized or a commercially available product may be used.

(B) the content of the amphoteric surfactant component is not particularly limited and may be appropriately selected depending on the purpose, to the liquid detergent composition total amount, 0.4% to 6 mass% is preferable, and 1 mass%-4 mass% are more preferable from the point of foaming, the creaminess of foam, the bactericidal power with respect to colon_bacillus | E._coli, rinse property, pH stability, and skin irritation. When the content is less than 0.4% by mass, foaming may be deteriorated, and the bactericidal power against E. coli and pH stability may be reduced. When the content exceeds 6% by mass, rinsing properties and foam creamy properties are obtained. May be worse and skin irritation may increase.

-Mass ratio (A / B)-
Wherein the content of the fatty acid salt of the component (A), (B) the mass ratio of the content of the amphoteric surfactant components (A / B) is 1-9, bactericidal activity against E. coli, pH From the viewpoints of stability, foaming, foam creaminess, and rinsing properties, 1.3 to 5 is preferable.
If the mass ratio (A / B) is less than 1, the sterilizing power against E. coli may be reduced, or the creamy property, rinsing property and foaming of the foam may be deteriorated. The force may decrease and the pH stability may deteriorate.

<(C) chelating agent>
The chelating agent of the component (C), be an acid type-free, sodium salt, potassium salt may be a salt such as ammonium salts, furthermore, it is a hydrolyzable ester derivatives Good. These may be used individually by 1 type and may use 2 or more types together .

The chelating agent prior SL component (C), bactericidal power against E. coli, foaming, and the rinsing of the point, ethylenediaminetetraacetic acid (EDTA), cyclohexane diamine tetraacetic acid (CDTA), 1-hydroxy-1,1 Diphosphonic acid (DEQUEST ^™ 2010, manufactured by Solutia Co.), oxalic acid, or a salt thereof is preferable. From the viewpoint of bactericidal activity against E. coli, ethylenediaminetetraacetic acid (EDTA), cyclohexanediaminetetraacetic acid (CDTA), 1-hydroxyethane -1,1-diphosphonic acid (DEQUEST ^™ 2010, manufactured by Solutia Co.) or a salt thereof is particularly preferable.
As the chelating agent for the component (C), an appropriately synthesized product or a commercially available product may be used.

The content of the chelating agent of the component (C), for the previous SL liquid detergent composition the total amount is 0.01 mass% to 1 mass%, sterilizing power against E. coli, foaming, and the rinsing of the point , virtuous preferable 0.05 wt% to 0.2 wt%. When the content is less than 0.01% by mass, the bactericidal power against E. coli may be reduced or foaming may be deteriorated. When the content exceeds 1% by mass, the rinsing property may be deteriorated.

-Mass ratio (A / C)-
The mass ratio (A / C) between the content of the fatty acid salt represented by the general formula of the component (A) and the content of the chelating agent of the component (C) is not particularly limited and depends on the purpose. 5 to 150 is preferable, and 30 to 100 is more preferable from the viewpoint of bactericidal activity against E. coli and rinsing properties.
When the mass ratio (A / C) is less than 5, the rinsing property may be deteriorated. When the mass ratio (A / C) is more than 150, the bactericidal power against Escherichia coli may be reduced or foaming may be deteriorated.

<(D) Polyhydric alcohol>
The polyhydric alcohol of the component (D) is not particularly limited as long as it is a divalent to hexavalent alcohol, and can be appropriately selected according to the purpose. For example, ethylene glycol, diethylene glycol, polyethylene glycol 200 (average Molecular weight 190-210), polyethylene glycol 300 (average molecular weight 280-320), polyethylene glycol 400 (average molecular weight 380-420), polyethylene glycol 600 (average molecular weight 570-630), propylene glycol, dipropylene glycol, 1,3- Examples include butylene glycol, isopentyl diol, pentylene glycol, 1,2-hexanediol, hexylene glycol, glycerin, diglycerin, sorbitol, xylitol, and mannitol. These may be used individually by 1 type and may use 2 or more types together. Among these, 1,3-butylene glycol, dipropylene glycol, propylene glycol, glycerin, and sorbit are preferable, and propylene glycol, glycerin, and sorbit are particularly preferable in terms of foam creaminess and skin irritation.
As the polyhydric alcohol of the component (D), an appropriately synthesized product or a commercially available product may be used. The average molecular weight of the polyethylene glycol indicates the average molecular weight described in the quasi-drug raw material standard 2006, and depending on the product, for example, polyethylene glycol # 200, there is a # between the polyethylene glycol and the numerical value. There is a case.

The content of the polyhydric alcohol as the component (D) is not particularly limited and can be appropriately selected depending on the purpose, but is 1% by mass to 30% by mass with respect to the total amount of the liquid detergent composition. Preferably, 5 mass%-20 mass% are more preferable from the point of creamy property of foam, rinse property, and skin irritation.
If the content is less than 1% by mass, the creaminess and skin irritation of the foam may decrease, and if it exceeds 30% by mass, the rinsing property and foaming may be deteriorated.

<Other ingredients>
There is no restriction | limiting in particular as said other component, In the range which does not impair the effect of this invention, it can select suitably according to the objective, For example, humectants other than water, silicones, (D) component, ( anionic surfactants other than a) component, cationic surfactants such as salts of stearyl trimethyl ammonium; vitamins; dipotassium glycyrrhizinate, glycyrrhetinic acid, an anti-inflammatory agent allantoin cationized cellulose, such as cationized guar gum Cationic polymer; Amphoteric polymer such as acrylic acid-dimethyldiallylammonium copolymer; Anionic polymer such as acrylic acid polymer; Animal extract, plant extract, pearling agent, coloring agent; Scrub agent such as polyethylene; Anti-dandruff agents such as Topirox; various fragrances; methylparaben, phenoki An antiseptic agent such as ethanol and the like.
The content of the other components can be appropriately selected according to the purpose within a range not impairing the effects of the present invention.

<PH>
The pH of the liquid detergent composition of the present invention is not particularly limited and may be appropriately selected depending on the intended purpose, but it is 9.5 to 11 at 25 ° C. from the viewpoint of skin irritation and low temperature stability. Is preferred. When the pH is less than 9.5, the low-temperature stability and the discharging ability from the former pump may be deteriorated. When the pH is more than 11, the skin irritation may be increased.
The pH can be measured, for example, according to a cosmetic raw material standard general test method pH measurement method.

<Manufacturing method>
There is no restriction | limiting in particular as a manufacturing method of the said liquid detergent composition, According to the objective, it can select suitably, For example, the said (A) component, the said (B) component, and the said (C) component, Preferably Can be obtained by mixing the component (D) and, if necessary, the other components. The water in the other components is preferably blended as the remainder so that the total amount of the liquid detergent composition is 100% by mass.
The liquid detergent composition may be prepared using an apparatus. There is no restriction | limiting in particular as said apparatus, According to the objective, it can select suitably, For example, there exists a shearing force and the stirring apparatus provided with the stirring blade which can mix the whole etc. are mentioned.
There is no restriction | limiting in particular as said stirring blade, According to the objective, it can select suitably, For example, a propeller, a turbine, a disper, etc. are mentioned.

-Container-
The liquid detergent composition of the present invention may be filled in a squeeze container, a pump container, or a former container.
Examples of the former container include a non-gas type foam discharge container. The non-gas type foam discharge container is not particularly limited as long as the liquid cleaning material can be mixed with air and discharged in a foamed state, and can be appropriately selected according to the purpose. Examples thereof include a squeeze foamer container capable of discharging bubbles by squeezing by hand, and a pump former container capable of discharging bubbles by depressing a nozzle part. As such a former container, for example, a commercial product manufactured by Yamato Seikan Co., Ltd. or Yoshino Kogyo Co., Ltd. can be used.
The non-gas type foam discharge container usually has a porous film body for forming bubbles (the material is preferably a plastic material such as nylon, polyester, polyolefin, etc.), and the liquid detergent composition is a porous film body. Passing through, bubbles are formed. There is no restriction | limiting in particular as an opening (mesh) of the said porous membrane body, Although it can select suitably according to the objective, 100 mesh or more are preferable, 100 mesh-400 mesh are more preferable, 200 mesh-350 A mesh is more preferred.
There is no restriction | limiting in particular as the number of the said porous membrane body, Although it can select suitably according to the objective, From a viewpoint of improving foam performance, 2-4 sheets are preferable.
More specifically, as the former container, those described in JP-A-7-315463, JP-A-8-230961, and JP-A-2005-193972 can be suitably used.

As a property of the liquid cleaning composition of this invention, it is preferable that it is liquid at normal temperature. Also, when using the former container, for example, when using a pump former container capable of discharging bubbles by pushing down the nozzle part and two 200 mesh (75 μm), the viscosity of the liquid detergent composition is: Although there is no restriction | limiting in particular, Although it can select suitably according to the objective, 15 mPa * s or less is preferable at 25 degreeC, and 1 mPa * s-10 mPa * s are more preferable.
The viscosity can be measured by, for example, a BL type viscometer (rotor No. 1, 60 rpm, 1 minute later, manufactured by Tokyo Keiki Co., Ltd.).

-Dosage form-
The shape and dosage form of the liquid detergent composition of the present invention are not particularly limited, and can be appropriately selected depending on the purpose. For example, various types such as liquid, cream, lotion and foam It can be prepared and used in properties and dosage forms, and can be prepared according to conventional methods for each dosage form.

-Use-
The liquid detergent composition of the present invention includes, for example, hair detergents such as shampoos and rinse-in shampoos, body soaps, hand soaps, foam hand soaps, skin cleansers such as cleansing foams, kitchen detergents, clothing detergents, etc. Can be used widely. Among these, skin cleansing agents such as body soaps, hand soaps, foam hand soaps, and cleansing foams are particularly preferable from the viewpoint of bactericidal activity against E. coli. They can be used according to conventional methods at normal dosages of the product.

  Examples of the present invention will be described below, but the present invention is not limited to these examples.

(Examples 1-42 and Comparative Examples 1-12)
A liquid detergent composition (hand soap) was prepared as follows. First, purification of a mass corresponding to 95% of the predetermined amount of (A) component, (B) component, and (C) component shown in Tables 1 to 10, and (D) component as necessary. Water was weighed into a heat-resistant container. (A) component, (B) component, (C) component, and (D) component were dissolved uniformly as needed, the common component was added, and it stirred until it became uniform. Subsequently, potassium hydroxide (48% by mass solution) or citric acid was gradually added while measuring the pH using a pH meter to adjust the pH. Finally, water was balanced so as to be 100% by mass, and after stirring well, pH was measured. The pH was measured by stabilizing a sample at 25 ° C. for 2 minutes using a pH meter (HM-30V, manufactured by Toa DKK Corporation).
Then, it filled with the container with a pump dispenser [discharge amount 1mL, nozzle caliber (inner diameter) 3.5mm, made by Canyon Corp.], and used for each evaluation.

  Next, various characteristics were evaluated as follows about each obtained liquid detergent composition (hand soap) of Examples 1-42 and Comparative Examples 1-12. The results are shown in Tables 1-10.

<Method for evaluating sterilizing power>
(1) Preparation of Bacterial Solution A bacterial solution was prepared so that the number of initial bacteria of the following E. coli was 10 ⁸ cells / mL.
E. coli: Escherichia coli NBRC 3972 (obtained from National Institute of Technology and Evaluation (NBRC))
(2) Test liquid A solution obtained by diluting each liquid detergent composition (hand soap) obtained 6 times with hard water 3 times was used as a test liquid.
(3) Bactericidal power test method At 25 ° C, 1 mL of the bacterial solution of (1) was added to 9 mL of the test solution of (2) and stirred sufficiently, and 4.5 mL of SCDLP agar medium (Soybean-Casein) 60 seconds after the addition. Digest Broth with Lectin & Polysorbate 80, manufactured by Wako Pure Chemical Industries, Ltd.) The same method was repeated to obtain each diluted solution. 1.0 mL from each diluted solution was collected in a petri dish, added with 15 mL of SCDLP agar medium, homogenized and cultured for 1 day (agar plate dilution method), and colonies were counted to determine the number of viable bacteria. Based on the following formula, the bactericidal power was calculated from the initial bacterial count and the viable bacterial count, and the bactericidal effect was evaluated according to the following criteria. In addition, sterilization power represents that sterilization power is so high that a numerical value is large.
Bactericidal power = -log ₁₀ (number of surviving bacteria / number of first bacteria)
〔Evaluation criteria〕
A: Bactericidal power is 2 or more B: Bactericidal power is 1 or more and less than 2 B: Bactericidal power is 0.5 or more and less than 1 X: Bactericidal power is less than 0.5

<PH stability>
A hard transparent glass bottle with a lid of 8 cm in height and 3 cm in diameter (capacity 55 mL) was filled with 50 mL of each of the liquid detergent compositions of Examples and Comparative Examples and stored in an environment of 50 ° C. for 4 weeks, and then a pH meter (Toa PH was measured at 25 ° C. using a DK Corporation model (HM-30R) and evaluated based on the following criteria.
〔Evaluation criteria〕
A: The pH drop is less than 0.2 compared with the product immediately after production. B: The pH drop is 0.2 or more and less than 0.4 compared with the product immediately after production. Δ: The pH drop is 0. 0 compared with the product immediately after production. 4 or more and less than 0.6 ×: pH drop is 0.6 or more compared to products immediately after production

<Foam performance (foaming, foam creamy), rinsing and skin irritation>
Ten professional evaluation panelists dropped 2 mL of each liquid detergent composition of Examples and Comparative Examples on the left palm to clean the skin, and foamed, foamed creamy, rinsed, and irritated based on the following criteria Sex was evaluated. As a result, the average score of 10 professional evaluation panelists was obtained and determined based on the following criteria for determining the average score.

<< Bubbling >>
〔Evaluation criteria〕
5 points: When both hands are rubbed 10 times, the entire palm is covered, very foaming 4 points: When both hands are rubbed 10 times, the entire palm is covered, very foaming 3 points: Both hands when rubbed 10 round trip, two points are bubbled extent to which the palm is visible halfway: when rubbed back and forth 10 times both hands, one point palm is bubbled extent that almost looks: little frothing [criterion score average value]
◎: 4.0 points or more ○: 3.5 points or more and less than 4.0 points △: 3.0 points or more and less than 3.5 points ×: Less than 3.0 points

<< Creamy property of foam >>
The creaminess of the foam was evaluated by the following criteria by collecting the foam remaining in the hand after rubbing 20 reciprocations with both hands.
〔Evaluation criteria〕
5 points: Large bubbles are not recognized with fine bubbles. 4 points: Large bubbles are slightly mixed in fine bubbles. 3 points: Large bubbles are slightly mixed in fine bubbles. 2 points: Large bubbles are mixed in fine bubbles. 1 point: There is no fine bubble and it is a large rough bubble [Criteria for rating average value]
◎: 4.5 points or more ◎ ~ ○: 4.0 points or more and less than 4.5 points ○: 3.5 points or more and less than 4.0 points Δ: 3.0 points or more and less than 3.5 points ×: 3.0 Less than

<< Rinsability >>
The liquid detergent composition was poured with tap water at a flow rate of 6 L / min while rubbing both hands, and the rinsing property was evaluated according to the following criteria from the speed of rinsing and the refreshing feeling at the end of rinsing.
〔Evaluation criteria〕
5 points: Very good rinsing properties 4 points: Good rinsing properties 3 points: Slightly good rinsing properties 2 points: Slightly bad rinsing properties 1 point: Poor rinsing properties [Criteria for rating average value]
◎: 4.5 points or more ○: 4.0 points or more and less than 4.5 points △: 3.0 points or more and less than 4.0 points ×: Less than 3.0 points

<< Skin irritation (after 1 week of continuous use) >>
It was used 10 times a day for 1 week continuously, and it was evaluated according to the following criteria whether or not there was skin irritation.
〔Evaluation criteria〕
5 points: No skin irritation 4 points: No skin irritation 3 points: Slight skin irritation 2 points: Skin irritation 1 point: Skin irritation is obvious [average score (Criteria)
◎: 5.0 points ◎ ~ ○: 4.5 points or more and less than 5.0 points ○: 4.0 points or more and less than 4.5 points △: 3.0 points or more and less than 4.0 points ×: 3.0 points Less than

(Example 43)
-Liquid detergent composition in foam container (foam body soap)-
The liquid cleaning composition shown below is manufactured according to a conventional method, and a pump former container capable of discharging bubbles by pushing down a non-gas type nozzle (using two 200 mesh (75 μm), manufactured by Yoshino Kogyo Co., Ltd.) And was evaluated in the same manner as in Example 1 using 10 mL of body soap. The results are shown below.
Potassium laurate (A ₁ ) 5.0% by mass
Potassium myristate (A ₂ ) 1.0% by mass
Sodium laurylaminodiacetate (B) 2.0% by mass
Ethylenediaminetetraacetic acid (C) 0.1% by mass
1-hydroxyethane-1,1-diphosphonic acid (C) 0.1% by mass
Glycerin (D) 7.0% by mass
Sorbit (D) 3.0% by mass
Isopropyl methylphenol 0.1% by mass
Styrene polymer emulsion 0.4% by mass
Perfume Small amount Dye Suitable amount Potassium hydroxide or citric acid Adjusted to pH 10
Purified water balance
Total 100% by mass
The mass ratio _{(A 1 / A 2):} 5
Mass ratio (A / B): 3
Mass ratio (A / C): 30
Bactericidal power against E. coli ◎
pH stability: ◎
Foaming: ◎
Creamy properties of foam: ◎
Skin irritation: ◎
Rinsing property: ◎

(Example 44)
-Liquid detergent composition in foam container (foam hand soap)-
The liquid detergent composition shown below is manufactured according to a conventional method, and filled into a pump former container (using two 200 mesh, manufactured by Yoshino Kogyo Co., Ltd.) capable of discharging foam by pushing down the non-gas type nozzle. Evaluation was performed in the same manner as in Example 1 using 2 mL of hand soap. The results are shown below.
Potassium laurate (A ₁ ) 3.5% by mass
Potassium myristate (A ₂ ) 1.5% by mass
Sodium laurylaminodipropionate (B) 1.8% by mass
Ethylenediaminetetraacetic acid (C) 0.1% by mass
Propylene glycol (D) 10.0% by mass
Isopropyl methylphenol 0.1% by mass
POE (11) stearyl ether 0.2% by mass
Rosemary extract 0.1% by mass
Perfume Small amount Dye Suitable amount Potassium hydroxide or citric acid Adjusted to pH 10
Purified water balance
Total 100% by mass
The mass ratio _{(A 1 / A 2):} 2.3
Mass ratio (A / B): 2.8
Mass ratio (A / C): 50
Bactericidal power against E. coli ◎
pH stability: ◎
Foaming: ◎
Creamy properties of foam: ◎
Skin irritation: ◎
Rinsing property: ◎

(Example 45)
-Liquid detergent composition (hand soap)-
The liquid cleaning composition shown below is produced according to a conventional method, filled in a container with a pump dispenser (discharge amount 1 mL, nozzle diameter 3.5 mm, manufactured by Canyon), and using 2 mL, the same as in Example 1 And evaluated. The results are shown below.
Potassium laurate (A ₁ ) 5.0% by mass
Potassium myristate (A ₂ ) 1.0% by mass
Sodium laurylaminodiacetate (B) 2.0% by mass
Ethylenediaminetetraacetic acid (C) 0.1% by mass
1-hydroxyethane-1,1-diphosphonic acid (C) 0.1% by mass
Glycerin (D) 5.0% by mass
Sorbit (D) 5.0% by mass
Alkyl acrylate copolymer emulsion (2) 1.0% by mass
Isopropyl methylphenol 0.1% by mass
Styrene polymer emulsion 0.4% by mass
Perfume Small amount Dye Suitable amount Potassium hydroxide or citric acid Adjusted to pH 10
Purified water balance
Total 100% by mass
The mass ratio _{(A 1 / A 2):} 5
Mass ratio (A / B): 3
Mass ratio (A / C): 30
Bactericidal power against E. coli ◎
pH stability: ◎
Foaming: ◎
Creamy properties of foam: ◎
Skin irritation: ◎
Rinsing property: ◎

  In addition, the specific content of the raw material of the liquid cleaning composition used in Examples 1-45 and Comparative Examples 1-12 is as showing in the following Table 11.

  The liquid detergent composition of the present invention includes, for example, hair detergents such as shampoos and rinse-in shampoos, body soaps, hand soaps, foam hand soaps, skin cleansers such as cleansing foams, kitchen detergents, clothing detergents, etc. Can be used widely.

As an aspect of this invention, it is as follows, for example.
<1> (A) 1% by mass to 7% by mass of a fatty acid salt represented by the following general formula (1),
R ¹ COOM General formula (1)
(In the general formula (1), ^{R 1} represents a monovalent hydrocarbon group having 5 to 25 carbon atoms, M is an alkali metal, ammonium, and represent any one of alkanolamine Amin.)
(B) at least one amphoteric surfactant selected from sodium laurylaminopropionate, sodium laurylaminodipropionate and sodium laurylaminodiacetate , and (C) ethylenediaminetetraacetic acid, cyclohexanediaminetetraacetic acid, hydroxyethanediphosphone Containing 0.1% by mass to 1% by mass of at least one chelating agent selected from acids, oxalic acid and salts thereof ;
Wherein component (A), the general formula (1) ^{R 1} in the fatty acid salt is a monovalent hydrocarbon group having 5 to 12 carbon atoms _{(A 1),} ^{R 1} carbon atoms in the general formula (1) A fatty acid salt (A ₂ ) that is a monovalent hydrocarbon group of 13 to 25, and a mass ratio (A ₁ / A ₂ ) of the (A ₁ ) component to the (A ₂ ) component is 0.8. And a mass ratio (A / B) of the component (A) to the component (B) is 1 to 9, which is a liquid detergent composition.
<2> The liquid detergent composition according to <1>, wherein the component (B) is at least one amphoteric surfactant selected from sodium laurylaminodipropionate and sodium laurylaminodiacetate .
<3> The liquid detergent composition according to any one of <1> to <2>, wherein the mass ratio (A / C) of the component ( A) to the component ( C) is 5 to 150.
<4> (B) content of the amphoteric surfactant components, is a liquid detergent composition according to any one of <3>, wherein a 0.4 wt% to 6 wt% <1> .
<5> The liquid cleaning composition according to any one of <1> to <4>, further comprising (D) a polyhydric alcohol.
<6> The liquid detergent composition according to any one of <1> to <5>, which is filled in a former container.

Claims (11)

(A) 1% by mass to 7% by mass of a fatty acid salt represented by the following general formula (1),
R ¹ COOM General formula (1)
(In the general formula (1), R ¹ represents a monovalent hydrocarbon group having 5 to 25 carbon atoms, and M represents any one of an alkali metal, ammonium, and alkanolamine.)
(B) at least one amphoteric surfactant selected from sodium laurylaminopropionate, sodium laurylaminodipropionate and sodium laurylaminodiacetate, and (C) ethylenediaminetetraacetic acid, cyclohexanediaminetetraacetic acid, hydroxyethanediphosphone Containing 0.1% by mass to 1% by mass of at least one chelating agent selected from acids, oxalic acid and salts thereof;
Wherein component (A), the general formula (1) ^{R 1} in the fatty acid salt is a monovalent hydrocarbon group having 5 to 12 carbon atoms _{(A 1),} ^{R 1} carbon atoms in the general formula (1) A fatty acid salt (A ₂ ) that is a monovalent hydrocarbon group of 13 to 25, and a mass ratio (A ₁ / A ₂ ) of the (A ₁ ) component to the (A ₂ ) component is 0.8. ~ 20 ,
Wherein (A) said with component (B) weight ratio of component (A / B) is 1-9 der is, and
PH The liquid detergent composition characterized by 9.5 to 11 der Rukoto at 25 ° C..   The liquid detergent composition according to claim 1, wherein the component (B) is at least one amphoteric surfactant selected from sodium laurylaminodipropionate and sodium laurylaminodiacetate.   The liquid detergent composition according to claim 1, wherein a mass ratio (A / C) of the component (A) and the component (C) is 5 to 150.   The liquid detergent composition according to any one of claims 1 to 3, wherein the content of the amphoteric surfactant as the component (B) is 0.4 mass% to 6 mass%.   Furthermore, (D) The liquid cleaning composition in any one of Claim 1 to 4 containing a polyhydric alcohol.   The liquid detergent composition according to any one of claims 1 to 5, which is filled in a former container. (A) Content of a component is 4 mass%-6 mass%,
(A ₁ ) Component is 3% to 5% by weight of potassium laurate, and
(A ₂ 7) The liquid detergent composition according to any one of claims 1 to 6, wherein the component is 0.5 to 3% by mass of potassium myristate. The content of (C) component is 0.05 mass%-0.2 mass%, The liquid detergent composition in any one of Claim 1 to 7. The liquid detergent composition according to any one of claims 5 to 8, wherein the component (D) is 5% by mass to 20% by mass of at least one polyhydric alcohol selected from propylene glycol, glycerin, and sorbit. The liquid detergent composition according to any one of claims 1 to 9, wherein the viscosity at 25 ° C is 15 mPa · s or less. The liquid detergent composition according to any one of claims 1 to 10, which is at least one selected from a body soap, a hand soap, a foam hand soap, and a cleansing foam.