JPH06116133A - Skin detergent composition - Google Patents

Abstract

PURPOSE:To obtain a skin detergent composition, having high safety, excellent foaming power and detergency and some foaming properties even in hard water, capable of manifesting mild action on the skin and excellent in touch after washing away the composition. CONSTITUTION:This skin detergent composition comprises (A) an N-acylaspartic acid salt of the formula I (R1 is 7-21C alkyl or and alkanolamine, with the proviso that M1 and M2 are not simultaneously H), e.g. sodium N-lauroyl-L- aspartate, (B) a higher fatty acid salt of formula II (R2 is 7-21C alkyl or alkenyl; M3 is cation derived from Na<+>, K<+>, NH<+>4 and alkanolamine) and, as desired, further (C) a phosphoric acid ester-based activator of formula III or IV [R3 to R5 are 8-22C alkyl or alkenyl; M4 and M5 are M1 and M2, with the proviso that M3 and M4 are not simultaneously H; M6 is M3; (l), (m) and (n) are 0-30].

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is highly safe, has a mild action on the skin, has excellent foaming power and detergency, and has a certain foaming property even in hard water, and is washed off. The present invention relates to a cleaning composition that gives a refreshing feeling.

[0002]

[Problems to be Solved by Conventional Techniques and Inventions] In recent years, the demand for safety and low irritation of detergents has become stronger and stronger. There is a growing demand for products containing highly safe surfactants.

[0003] In such a situation, N-acyl glutamate is a mild detergent for skin and hair.

However, the N-acyl glutamate alone is somewhat insufficient in foaming power and detergency and is insufficient as a surfactant. N is used as a cleaning composition that improves this point.
Some of them contain an acylglutamate and a weakly basic salt of a fatty acid (JP-A-61-287992). Also N
-There is a composition composed of 90 to 10% by weight of an acylglutamate and 10 to 90% by weight of an alkyl phosphate or a polyoxyethylene alkyl phosphate (Japanese Patent Publication No. 60-9555). It has been found that it has a mild action on the skin and hair and that good detergency and foaming power are obtained even in the presence of oil stains.

However, in the above two compositions, a slight increase in hardness in water causes a decrease in foaming power,
Also, depending on the blending ratio of the acyl glutamate, the skin feels slippery after rinsing.

That is, the present invention has the same foaming power and detergency as the conventional ones, has a mild action on the skin, has a small decrease in foaming power due to an increase in hardness in water, and has a refreshing feeling after washing. It is an object of the present invention to provide a cleaning composition that gives

[0007]

In order to achieve the above object, the cleaning composition of the present invention has the following constitution. General formula (A)

[Chemical 6] (In the formula, R ₁ is an alkyl group having 7 to 21 carbon atoms or an alkenyl group, M ₁ and M ₂ are hydrogen or Na ⁺ , K ⁺ , NH
Indicates a cation derived from ₄ ⁺ or an alkanolamine. However, M ₁ and M ₂ are not hydrogen at the same time. ) And an N-acyl aspartate represented by the general formula (B)

[Chemical 7] (Wherein R ₂ is an alkyl group or alkenyl group having 7 to 21 carbon atoms, M ₃ is a cation derived from Na ⁺ , K ⁺ , NH ₄ ⁺ or an alkanolamine). A skin cleansing composition comprising: And the general formula (A)

[Chemical 8] (In the formula, R ₁ is an alkyl group having 7 to 21 carbon atoms or an alkenyl group, M ₁ and M ₂ are hydrogen or Na ⁺ , K ⁺ , NH
Indicates a cation derived from ₄ ⁺ or an alkanolamine. However, M ₁ and M ₂ are not hydrogen at the same time. ) And an N-acyl aspartate represented by the general formula (B)

[Chemical 9] (Wherein R ₂ is an alkyl group or alkenyl group having 7 to 21 carbon atoms, M ₃ is a cation derived from Na ⁺ , K ⁺ , NH ₄ ⁺ or an alkanolamine). And general formula (C)

[Chemical 10] (In the formula, R ₃ , R ₄ and R ₅ are alkyl groups or alkenyl groups having 8 to 22 carbon atoms, M ₄ and M ₅ are hydrogen or Na
Indicates a cation derived from ⁺ , K ⁺ , NH ₄ ⁺ or an alkanolamine. However, M ₄ and M ₅ are not hydrogen at the same time. Furthermore, M ₆ is Na ⁺ , K ⁺ , N
Indicates a cation derived from H ₄ ⁺ or an alkanolamine. Moreover, l, m, and n show the number of 0-30. )
A skin cleansing composition comprising a phosphoric acid ester-based active agent represented by:

The N-acyl aspartate represented by the above general formula (A) in the present invention includes sodium N-lauroyl-L-aspartate, potassium N-coconut oil fatty acid acyl-L-aspartate, and N-myristoyl. -L-sodium aspartate, N-palmitoyl-
L-aspartic acid potassium, N-oleoyl-L-aspartic acid triethanolamine and the like, but not limited thereto. The proportion of the total amount of the detergent composition is generally 1 to 30% by weight. If it is less than 1% by weight, sufficient foaming power cannot be obtained, and if it exceeds 30% by weight, safety and stability are considered. Not very good.

The higher fatty acid salt represented by the general formula (B) in the present invention is, for example, potassium laurate,
Examples thereof include, but are not limited to, potassium myristate, sodium myristate, sodium oleate, and triethanolamine laurate. The proportion of the total amount of the detergent composition is generally 3 to 50% by weight, and if it is less than 3% by weight, sufficient foaming power cannot be obtained.
If it exceeds 50% by weight, it is not preferable in terms of safety and stability.

In the present invention, the phosphoric acid ester-based surfactant represented by the general formula (C) preferably has an ethylene oxide addition mole number of 0 to 3, and an alkyl group having 12 to 14 carbon atoms. preferable. Further, those having an addition mole number of ethylene oxide of 0 and having an alkyl group having 12 to 14 carbon atoms are most preferable. Specific examples include sodium monolauryl phosphate, diethanolamine monooleyl phosphate, triethanolamine monomyristyl phosphate, potassium polyoxyethylene monomyristyl phosphate, triethanolamine polyoxyethylene monolauryl phosphate, triethanolamine dilauryl phosphate,
Examples thereof include potassium polyoxyethylene dimyristyl phosphate, but are not limited thereto. The proportion of the total amount of the detergent composition is generally 1 to 30% by weight, and if it is less than 1% by weight, sufficient detergency cannot be obtained.
If it exceeds 0% by weight, it is not preferable in terms of safety and stability.

In the present invention, the N-acyl aspartate represented by the general formula (A), the higher fatty acid salt represented by the general formula (B), and the phosphate ester-based interface represented by the general formula (C) are used. The total amount of the activator is approximately 5 to 6 out of the total amount of the detergent composition.
It is 0% by weight, preferably 10 to 45% by weight. 5
When the amount is less than 60% by weight, sufficient foaming power and detergency cannot be obtained, and when the amount is more than 60% by weight, safety and stability are not preferable.

The cleaning composition of the present invention comprises (A), (B) or (A), (B), (C) as an essential component, and the composition achieves the object of the present invention. Other components can be appropriately mixed within the range. That is, higher alcohols, silicone oils, lanolin derivatives, oils such as ester oils, nonionic surfactants such as polyoxyethylene hydrogenated castor oils, polymer JR (manufactured by Union Carbide Corporation), polycoat NH (manufactured by Henkel), mercoat 550 (Merck), Guff Cut 755N (G
AF company), etc., cationic polymers, bactericides, chelating agents, UV absorbers, natural extracts of animals and plants and their derivatives, organic acids such as citric acid, inorganic salts such as sodium chloride,
Fragrances, pigments and the like can be mentioned, and one kind or two or more kinds thereof can be blended.

The present invention can be applied to the following dosage forms. That is, it is a body shampoo which is a skin cleanser, a face wash foam, a hand soap and the like.

[0014]

The present invention will now be described with reference to examples, but the present invention is not limited to these examples. The test method used in this example is as follows.

(Foaming Power Test Method) The foaming power was measured according to the Loss Miles method. However, the sample is a 2% aqueous solution (CaCO ₃
50 ppm to 200 ppm artificial hard water is used) and the temperature is 40
℃. Moreover, the measurement was performed for the foam height after 10 seconds. ◎ ... Bubbling power 160 mm or more ○… 〃 100 mm or more and less than 160 mm △… 〃 40 mm or more and less than 100 mm ×… 〃 less than 40 mm

(Detergency test method) 5% × 5 cm wool muslin cloth with 7% lanolin and 0.005% Sudan III
0.4 ml of chloroform solution of 1 is evenly dried, and the contaminated cloth is washed with about 100 ml of 40% of 3% detergent solution.
It was placed in a glass cylinder of ml and shaken for 15 minutes in a constant temperature bath of 40 ° C., the contaminated cloth was thoroughly rinsed in running water, dried and the reflectance was examined, and the cleaning rate was obtained by the following formula. Cleaning rate = {(a-b) / (c-b)} × 100 a: reflectance after cleaning b: reflectance before cleaning c: reflectance of original cloth Also, the evaluation criteria are set as follows. did. ◎ ... Excellent detergency Cleaning rate 85% or more ○ ... Good detergency 70% or more and less than 85% △ ... Ordinary detergency 55% or more and less than 70% × ... Poor detergency Cleaning rate less than 55%

(Protein Denaturation Test Method) The ovalbumin denaturation rate when the sample was added to an ovalbumin pH7 buffer solution at a sample concentration of 1% by using an aqueous high performance liquid chromatography using the absorption peak at 220 nm. Measured. Denaturation rate (%) = {(Ho-Hs) / Ho} × 100 Ho ... 220 nm absorption peak height of ovalbumin Hs ... 22 when sample is added to ovalbumin buffer solution
The height evaluation standard of the 0 nm absorption peak was set as follows. ◎ ... Ovalbumin denaturation rate of less than 30% ◯ ... Ovalbumin denaturation rate of 30% or more and less than 60% △ ... Ovalbumin denaturation rate of 60% or more and less than 80% X ... Ovalbumin denaturation rate of 80% or more

(Sliminess) 20 women (panels) continuously used the cleaning agent of the present invention for 1 week to judge the feeling of use.
As an evaluation method, each composition is taken on a bath sponge, and the body is thoroughly foamed to thoroughly wash the body. Then, it was rinsed with warm water, and the slimy feeling of each body part after the rinse was evaluated. ◎… No slimy feeling ○… Almost no slimy feeling △… Slight slimy feeling ×… Great slimy feeling

Examples 1 to 6 and Comparative Examples 1 to 10 Cleaning agent compositions having the compounding compositions shown in the upper row of Table 1 were prepared by the usual method, and the above test was conducted. The results are shown in the lower row of Table 1.

[Table 1]

As is clear from Examples 1 to 6, all the cleaning compositions of the present invention exhibited excellent performance. on the other hand,
When either the essential component N-acyl aspartate or higher fatty acid salt is lacking or when other raw materials are used (Comparative Examples 1 to 4, 7 to 10), or when the blending amount of these is out of the normal range (Comparative Examples 5 and 6) all showed inferior performance, and the object of the present invention could not be achieved.

Example 7 A body shampoo having the following composition was prepared and evaluated by the above method. Composition Weight (%) 1. N-coconut oil fatty acid-L-aspartic acid triethanol 15.0 amine 2. Triethanolamine laurate 11.0 3. Ethylene glycol distearate 0.8 4. Concentrated glycerin 3.0 5. Dye, fragrance suitable amount 6. Purified water residue

Example 8 A face wash foam having the following composition was prepared and evaluated by the above-mentioned method. Composition Weight (%) 1. N-myristoyl-L-sodium aspartate 12.0 2. Sodium monomyristyl phosphate 5.0 3. Sodium dimyristyl phosphate 5.0 4. Myristic acid 8.0 5. Stearic acid 6.0 6. Potassium hydroxide 3.9 7. Lauric acid diethanolamide 2.0 8. Concentrated glycerin 10.0 9. Perfume proper amount 10. Purified water residue

The body shampoos and face cleansing foams of Examples 7 and 8 were satisfactory in terms of foamability, cleanability, safety, and feel during use.

[0024]

As described above, the present invention has a mild action on the skin, has excellent foaming power and detergency, and has a certain foaming property even in water of high hardness, and after washing off, It is clear to provide a cleaning composition that gives a refreshing feel.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location C11D 1:34)

Claims (2)

[Claims] 1. A compound represented by the general formula (A): (In the formula, R ₁ is an alkyl group having 7 to 21 carbon atoms or an alkenyl group, M ₁ and M ₂ are hydrogen or Na ⁺ , K ⁺ , NH
Indicates a cation derived from ₄ ⁺ or an alkanolamine. However, M ₁ and M ₂ are not hydrogen at the same time. ) And an N-acyl aspartate represented by the general formula (B): (Wherein R ₂ is an alkyl group or alkenyl group having 7 to 21 carbon atoms, M ₃ is a cation derived from Na ⁺ , K ⁺ , NH ₄ ⁺ or an alkanolamine). A skin cleansing composition comprising: 2. A compound represented by the general formula (A): (In the formula, R ₁ is an alkyl group having 7 to 21 carbon atoms or an alkenyl group, M ₁ and M ₂ are hydrogen or Na ⁺ , K ⁺ , NH
Indicates a cation derived from ₄ ⁺ or an alkanolamine. However, M ₁ and M ₂ are not hydrogen at the same time. ) And an N-acyl aspartate represented by the general formula (B): (Wherein R ₂ is an alkyl group or alkenyl group having 7 to 21 carbon atoms, M ₃ is a cation derived from Na ⁺ , K ⁺ , NH ₄ ⁺ or an alkanolamine). And the general formula (C): (In the formula, R ₃ , R ₄ and R ₅ are alkyl groups or alkenyl groups having 8 to 22 carbon atoms, M ₄ and M ₅ are hydrogen or Na
Indicates a cation derived from ⁺ , K ⁺ , NH ₄ ⁺ or an alkanolamine. However, M ₄ and M ₅ are not hydrogen at the same time. Furthermore, M ₆ is Na ⁺ , K ⁺ , N
Indicates a cation derived from H ₄ ⁺ or an alkanolamine. Further, l, m and n are numbers from 0 to 30. ) A skin cleansing composition comprising a phosphoric acid ester-based active agent represented by