JPH11269488A - Detergent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a detergent compsn. which is excellent in lathering capability and detergency, is hardly skin-irritating, and has a suitable viscosity by compounding a hydroxyether carboxylic acid type anionic surfactant and a fatty acid amide propylbetaine, each in a specified amt. SOLUTION: 1-20 wt.% at least one hydroxyether carboxylic acid type anionic surfactant of formula I and 1-20 wt.% at least one fatty acid amide propylbetaine are compounded. In formula I, R<1> is a hydrocarbon group having on average 8-22 carbon atoms; and M<1> is an alkali or alkaline earth metal, ammonium, or an org. amine. Sodium dodecane-1,2-diolacetic acid ether is pref. as the compd. of formula I. Pref., the fatty acid amide propylbetaine is a long- chain fatty acid amide propylbetaine of formula II and mainly comprises a compd. of which the average number of carbon atoms of R<2> CO is 14. In formula II, R<2> CO is a residue of a fatty acid of which the average number of carbon atoms is 10-22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a cleaning composition. More specifically, the present invention relates to a detergent composition for cleaning human skin, hair, etc., which has excellent foaming power and detergency, low irritation to the skin, moderate moderate viscosity, and improved usability. .

[0002]

2. Description of the Related Art Conventionally, anionic surfactants are often used in detergent compositions used for cleaning skin and hair, such as facial cleansers and hair cleansing agents, because of their detergency. Has been used. Among the anionic surfactants, hydroxyethercarboxylic acid type anionic surfactants represented by, for example, sodium dodecane-1,2-diol acetate, etc., have good foaming properties in addition to detergency. Although it is used relatively frequently, it has no thickening property, and its formulation into cosmetics is disadvantageous in terms of usability. In general, it has been recognized that anionic surfactants have excellent detergency but are highly irritating to the skin, although to varying degrees.

In order to cope with this problem, for example, reduction of skin irritation by blending an anionic surfactant with a zwitterionic surfactant such as alkyl betaine or amido betaine has been carried out. Have been done. Incidentally, these betaines have heretofore been known to have an average of 12 carbon atoms.
In many cases, (C ₁₂ ) is mainly blended. This C ₁₂
When the surfactant is blended as a main component, it is excellent in foaming and the like, but tends to cause protein denaturation,
In addition, its skin irritation is basically high.

Further, in order to secure a suitable viscosity as a commercial product, a fatty acid alkylolamide (nonionic surfactant) or the like is added and multi-component blending is performed. However, when multi-components are blended in this way,
There is a problem that the long-term storage stability is poor, for example, the pH of the product changes over a long period of time after the production, and the appearance color and odor change accordingly.

[0005]

That is, an object of the present invention is to have excellent foaming performance and cleaning performance, have extremely low irritation to human skin, and have a viscosity that can satisfy the value as a product. An object of the present invention is to provide a cleaning composition having excellent usability.

[0006]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies in view of the above circumstances, and as a result, by combining a predetermined amount of a hydroxyether carboxylic acid type anionic surfactant with a fatty acid amidopropyl betaine, The inventors have found that the object can be achieved, and based on this, completed the present invention.

That is, the present invention relates to (A) the following general formula (I)

[0008]

Embedded image Wherein R ¹ represents a saturated or unsaturated hydrocarbon group having an average of 8 to 22 carbon atoms; M ¹ represents an alkali metal, an alkaline earth metal, ammonium or an organic amine. 1 to 20% by weight of one or more hydroxyethercarboxylic acid type anionic surfactants
And (B) 1 to 20% by weight of one or more fatty acid amidopropyl betaines.

Here, the component (A) is dodecane-1,
Sodium 2-diol acetate ether is preferably used.

The component (B) includes the following general formula (II)

[0011]

Embedded image (Wherein R ² CO represents a saturated or unsaturated fatty acid residue having an average of 10 to 22 carbon atoms) one or more of long-chain fatty acid amidopropyl betaines represented by the formula:
In the component (B), those in which the compound having an average number of carbon atoms of R ² CO of 14 is the main component are preferably used.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.

The hydroxyethercarboxylic acid type anionic surfactant used as the component (A) in the present invention is represented by the above general formula (I) (wherein R ¹ and M ¹ are as defined above). expressed. Here, R ¹ is, for example, C _{9
H 19, C 10 H 21,} C 11 H 23, C 12 H 25, C 13 H 26, C 15
_{H 31, C 17 H 35,} C 13 H 25, C 15 H 29 and the like.
Examples of M ¹ include lithium, potassium, sodium, calcium, magnesium, ammonium, monoethanolamine, and triethanolamine. (A)
One or more components can be used.
As the component (A), specifically, sodium dodecane-1,2-diol acetate ether is particularly preferably used.

The amount of the component (A) is 1 to 3 in the composition of the present invention.
It is 20% by weight, preferably 5 to 15% by weight.
If it is less than 1% by weight, the foaming property and the cleaning property cannot be sufficiently exhibited,
On the other hand, if it exceeds 20% by weight, skin irritation is concerned, which is not preferred.

As the fatty acid amidopropyl betaine as the component (B), the above-mentioned general formula (II) (wherein R ² C
O is as defined above), and is preferably a long chain fatty acid amidopropyl betaine. In the above formula, as R ² CO, for example, C ₉ H ₁₉ CO, C ₁₁ H ₂₃ CO, C ₁₃ H ₂₇
CO, C ₁₅ H ₃₁ CO, C ₁₇ H ₃₅ CO, C ₁₃ H ₂₅ CO, C
₁₅ H ₂₉ CO and the like. Among them, C ₁₃ H ₂₇ CO, C ₁₁
H ₂₃ CO, C ₉ H ₁₉ CO and the like are preferred, and C ₁₃ H ₂₇ CO is particularly preferred.

As the component (B), for example, a compound represented by the general formula (I)
In the long chain fatty acid amidopropyl betaines represented by I), optionally wherein R ² average number of carbon atoms of CO can contain more 10,12,14, the amount of saturated compounds of the average number of carbon atoms of R ² CO is 14 > the amount of R ² average number of carbon atoms of CO saturated compound of 12> R average number of carbon atoms of ² CO 10
Is preferably blended in the relationship of the amount of the saturated compound. In particular, it is most preferable that the saturated compound having an average carbon number of 14 of R ² CO of the general formula (II) accounts for 90% or more in the component (B).

The compounding amount of the component (B) is 1 to 3 in the composition of the present invention.
It is 20% by weight, preferably 5 to 15% by weight.
If it is less than 1% by weight, the foaming property and the cleaning property cannot be sufficiently exhibited,
On the other hand, if it exceeds 20% by weight, a favorable feeling in use cannot be obtained.

In the present invention, by using the components (A) and (B) in combination within the range of 1 to 20% by weight, basic surfactants such as foaming properties and detergency can be obtained. While maintaining the action, sufficient skin hypoirritation can be obtained at the same time. Further, it is possible to secure an appropriate viscosity for use without blending other components such as fatty acid alkylolamide. In addition, it is possible to solve the problem that the long-term storage stability, which has conventionally been caused when multiple components are blended, is inferior and has excellent temporal stability.

In the cleaning composition of the present invention, the mixing ratio (weight ratio) of the component (A) and the component (B) is not particularly limited, but in order to obtain the above effects more advantageously,
(A) component: (B) component = 10: 1 to 1:10 is preferable, and 2: 1 to 1: 2 is more preferable.

The detergent composition of the present invention preferably further contains (C) Nacl from the viewpoint of contribution to long-term stability. The amount of NaCl was determined according to the detergent composition 10
0.1 to 5.0% by weight of 0% by weight is preferred.

The detergent composition of the present invention may further comprise, in addition to the above-mentioned components, polyhydric alcohols, polysaccharides, protein derivatives, and the like in a quantitative and qualitative range according to the purpose, without impairing the effects of the present invention.
Components generally included in detergent compositions such as drugs, inorganic acids or salts thereof, organic acids or salts thereof, antioxidants, ultraviolet absorbers, dyes, and fragrances may be added.

Here, the polyhydric alcohol includes 1,2-
Propanediol, 1,3-propanediol, 1,2
-Butanediol, 1,3-butanediol, 1,4-
Butanediol, dipropylene glycol, glycerin, diglycerin, sorbitan, sorbitol, maltitol, glucose, sucrose and the like.

Examples of the polysaccharide include hyaluronic acid, chondroitin sulfate, dermatan sulfate, keratan sulfate, heparan sulfate and salts thereof.

Drugs include vitamin C, vitamin E
, Amino acids, crude drugs, anti-inflammatory agents, bactericides, and other commonly used drugs for cosmetics.

Examples of the inorganic acids or salts thereof include hydrochloric acid, sulfuric acid, sodium chloride, potassium chloride and the like.

The organic acids or salts thereof include citric acid, lactic acid, tartaric acid, phthalic acid, trisodium citrate,
Sodium lactate and the like.

[0027]

EXAMPLES Next, the present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto. In addition, all compounding amounts are weight%.

Prior to the examples, test methods and evaluation methods employed in each example will be described.

[Viscosity suitable for use] After the preparation of the samples, actual use tests were carried out by 20 specialized panels on the presence or absence of liquid leakage from the hands when the test samples were taken into hands during face washing. (Evaluation) ：: Out of 20 persons, 15 or more admitted that there was no liquid leakage, and good. Δ: Out of 20 persons, 10-14 persons admitted that there was no liquid leakage, and good ×: 20 persons Among them, 5 to 9 persons recognized that there was no leakage and was good.

[Foaming test] 2500 ml after preparation of sample
400 ml of artificially hardened water (700 ppm) at 40 ° C. was placed in a cylindrical cylinder equipped with a stirrer in a container, and after adding 40 g of a test sample and stirring at 4500 rpm for 1 minute, the foam volume was measured. (Evaluation) ：: Good bubbling (bubble capacity of 1200 ml or more) △: Bubbling normal (bubble capacity of 800 ml or more and 1200 ml)
×): Poor foaming (foam volume less than 800 ml)

[Detergency test] An artificial sebum having the same composition as sebum was applied to a certain area of the upper arm, and 1 g of a test sample was applied with the palm.
Is washed with tap water, and then the artificial sebum-applied portion is washed. Observe the upper arm after cleaning with a microscope,
The cleaning effect was visually determined. (Evaluation) ：: Good washability (washing rate 80% or more) △: Normal washability (60% or more and less than 80%) ×: Poor washability (less than 60%)

[Skin Irritation (Conductance)] A 10% dilution of a sample was brought into contact with the same site for 5 consecutive days using the inner forearm of 10 healthy men, and the skin conductance before and after the test was measured. Contact test once a day
The test site was rinsed with ion-exchanged water after each contact for 5 minutes. During the test period, cleaning of the test site was restricted. The ratio of the skin conductance after the test to the skin conductance before the test was calculated, and the average value of 20 subjects was further calculated, and evaluated as follows. (Evaluation) ○: Average skin conductance ratio 1.05 or more △: Average skin conductance ratio 0.95 or more
Less than 1.05 ×: Average skin conductance ratio less than 0.95

[Long-term stability] Each sample was treated at 0 ° C, room temperature, 40
The sample was stored at each temperature of ° C., and the state change after one month was visually observed, and judged according to the following criteria. (Evaluation criteria) ○: No change in state △: Cloudy ×: Precipitation

(Examples 1 to 10, Comparative Examples 1 to 5) A detergent composition having the composition (% by weight) shown in the following Tables 1 to 3 was prepared, and its viscosity, foaming property, and detergency were measured. , Hand irritation and long-term stability.

[0035]

[Table 1]

[0036]

[Table 2]

[0037]

[Table 3]

As is clear from the results in Tables 1 to 3, the cleaning composition of the present invention has excellent performance in all of viscosity, foaming property, detergency, safety (low irritation) and long-term stability. showed that.

(Example 11) Gel detergent (combination component) (% by weight) Sodium dodecane-1,2-diol acetate ether 10 Amidopropyl betaine coconut fatty acid 3 Amidopropyl betaine myristate 7 Glycerin 3 NaCl 2 Quench Acid appropriate amount Perfume appropriate amount Purified water residue (Preparation method) After mixing the above components, heating, dissolving and stirring well at 70 ° C., cooling to 30 ° C. to prepare a gel detergent.

(Example 12) Gel detergent (combination component) (% by weight) Sodium dodecane-1,2-diol acetate ether 7 Amidopropyl betaine myristate 10 N-coco fatty acid-sodium N-methyltaurine 5 NaCl 2 Erythritol 1 Polyoxyethylene (POE) hydrogenated castor oil 1 Orange oil 0.05 Citric acid qs Purified water residue (Preparation method) After mixing the above components, heat to 70 ° C, dissolve and stir well. It was cooled to 30 ° C. to prepare a gel detergent.

(Example 13) Hair shampoo (combination component) (% by weight) sodium dodecane-1,2-diol acetate 10 myristate amidopropyl betaine 5 POE (2) sodium lauryl sulfate 5 POE (10) lauryl Ether 1 "Polymer JR-400" 0.3 Citric acid 1 Dipotassium glycyrrhizinate 0.1 Sodium benzoate Appropriate amount Perfume Appropriate amount Purified water residue (Production method) After mixing the above components, heat and dissolve at 80 ° C. After stirring well, the mixture was cooled to 30 ° C. to prepare a hair shampoo.

Example 14 Hair rinse in shampoo (combination component) (% by weight) Sodium dodecane-1,2-diol acetate 5 Amidopropyl betaine myristate 5 N-coco fatty acid-sodium N-methyltaurine 3 POE (4) Stearyl ether 0.1 "Polymer JR-400" 0.3 Dimethylaminopropylamide stearate 0.1 Citric acid 0.5 Stearic acid 0.2 Sodium benzoate qs Perfume qs Purified water residue (production method) After mixing the above components, the mixture was heated to 80 ° C., dissolved and stirred well, and then cooled to 30 ° C. to prepare a hair rinse in shampoo.

(Example 15) Hair shampoo (combination component) (% by weight) Sodium dodecane-1,2-diol acetate 5 Amidopropyl betaine myristate 5 N-coco fatty acid-sodium N-methyltaurine 5 POE ( 12) Lauryl ether 1 "Polymer JR-400" 0.3 Citric acid 1 Ethyl alcohol 12 Perfume Appropriate amount Purified water residue (Production method) After mixing the above components, heat to 80 ° C, dissolve and stir well. After cooling to 30 ° C., a hair shampoo was prepared.

(Example 16) Body cleansing (combination component) (% by weight) Sodium dodecane-1,2-diol acetic acid ether 15 Amidopropyl betaine myristate 5 N-coco fatty acid-N-methyltaurine triethanolamine 6 NaCl 2 POE (8) behenyl ether 0.1 Artemisia extract 0.1 Tocopherol acetate 0.1 Perfume Appropriate amount Purified water residue (Preparation method) After mixing the above components, the mixture was heated to 80 ° C., dissolved and stirred well. Thereafter, the mixture was cooled to 30 ° C. to prepare body cleansing.

Example 17 Facial Wash Foam (Blend Component) (% by Weight) Sodium Dodecane-1,2-diol Acetate 5 Amidopropyl Betaine Myristate 5 Potassium Coconut Fatty Acid 30 Stearic Acid 4 Glycerin 15 Polyethylene Glycol 1500 2 Titanium oxide 0.2 Oolong tea extract 0.1 Kaolin 0.1 Menthol 0.1 Perfume Appropriate amount Purified water residue (Preparation method) After mixing the above components, heat to 80 ° C, dissolve and stir well. A facial cleansing foam was prepared at a temperature of ℃.

Each of the cleaning compositions of Examples 11 to 17 was excellent in viscosity, foaming, cleaning effect, low skin irritation, and good long-term stability.

[0047]

As described in detail above, according to the present invention, it has excellent foaming performance and cleaning performance, has extremely low irritation to human skin, and has a viscosity that satisfies commercial value. A cleaning composition having improved usability and excellent long-term stability is provided.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI C11D 1/06 C11D 1/06 1/90 1/90 3/04 3/04 10/02 10/02 // (C11D 1 / 94 1:06 1:90)

Claims (7)

[Claims] (A) The following general formula (I): Wherein R ¹ represents a saturated or unsaturated hydrocarbon group having an average of 8 to 22 carbon atoms; M ¹ represents an alkali metal, an alkaline earth metal, ammonium or an organic amine. 1 to 20% by weight of one or more hydroxyethercarboxylic acid type anionic surfactants
And (B) 1 to 20% by weight of one or more kinds of fatty acid amidopropyl betaines. 2. The cleaning composition according to claim 1, wherein the component (A) is sodium dodecane-1,2-diol acetate ether. The component (B) is represented by the following general formula (II): (Wherein R ² CO represents a saturated or unsaturated fatty acid residue having an average of 10 to 22 carbon atoms) one or more of long-chain fatty acid amidopropyl betaines represented by the formula:
^3. The compound according to claim 1, wherein the compound having an average number of carbon atoms of R ² CO of component (B) is 14 as a main component.
The cleaning composition according to the above. 4. The compounding ratio of the compound of the general formula (II) in the component (B) is such that the average number of carbon atoms of R ² CO is 14
The cleaning composition according to claim 3, wherein a saturated compound of the formula:> a saturated compound having an average number of carbon atoms of R ² CO of 12> a saturated compound having an average number of carbon atoms of R ² CO of 10> 5. Component (B) wherein R ² C of the general formula (II)
The cleaning composition according to claim 4, wherein the saturated compound having an average carbon number of O of 14 accounts for 90% or more. 6. The mixing ratio of the component (A) and the component (B) is as follows:
The cleaning composition according to any one of claims 1 to 5, wherein (A) component: (B) component = 10: 1 to 1:10 (weight ratio). 7. The composition further comprising (C) NaCl,
The cleaning composition according to any one of claims 1 to 6.