JP2002179553A - Skin cleansing composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a skin cleansing composition giving rich and elastic creamy foam, having excellent cleansing power to the dirt and sebum of the skin, giving extremely moist feeling to the cleaned skin and having good temperature stability. SOLUTION: The skin cleansing composition contains (A) one or more compounds selected from N-acylglycine and/or its salt and (B) one or more polyhydric alcohols selected from glycerol and/or a polyglycerol having an average degree of polymerization of 2-10 at an (A):(B) weight ratio of 1:(0.5-2.5) and further (C) 0.1-10 wt.% maltitol hydroxy-aliphatic ether and (D) 0.1-10 wt.% fatty acid soap and has neutral or weakly basic nature.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides rich foaming, elastic and creamy foam, is excellent in cleansing skin dirt and sebum, gives a very moist feeling after cleaning, and has a stable temperature. It relates to a good skin cleanser composition.

[0002]

2. Description of the Related Art Conventionally, fatty acid soaps have been used as main components as skin cleansing agents. Fatty acid soaps are creamy, rich lather, quick lather removal, excellent detergency, freshness after washing, etc. Has been used for However, on the other hand, the refreshing feeling after washing was too strong, and it was difficult to give a moist and favorable feeling after washing. For the purpose of compensating for the disadvantage, conventionally, various measures such as mixing various components such as an oily component and an amphoteric surfactant in the cleaning agent have been devised, but none of them can provide a satisfactory moist feeling. Was the actual situation.

On the other hand, N-acylglutamic acid-based detergents, N-acylsarcosine salt-based detergents, and N-acyl-
Methyl-β-alanine salt-based detergents and the like. However, none of these cleaning agents is satisfactory in terms of foaming, creamy property of foam, cleaning effect, rinsing property and the like. In addition, there is also a problem in terms of temperature stability.Specifically, even a cream having a moderate hardness at a low temperature liquefies or separates at a high temperature, or does not liquefy at a high temperature, but a cream at a low temperature may not. In fact, there has been such a problem that it becomes hard and it is difficult to take it out of the container.

[0004]

SUMMARY OF THE INVENTION In view of the above circumstances, the present inventor has developed a rich lather and a resilient creamy foam with excellent skin dirt and sebum detergency, and is very moist after washing. It is an object of the present invention to obtain a skin cleansing composition which gives a comfortable feel and has good temperature stability.

[0005]

Means for Solving the Problems The present inventors have conducted intensive studies to achieve the above object, and as a result, have found that N-acylglycine surfactants, specific polyhydric alcohols, maltitol hydroxy aliphatic ethers, fatty acid soaps A rich, foamy, elastic, creamy foam with excellent cleansing properties for dirt and sebum on the skin, giving a very moist feeling after cleaning, and good temperature stability. The inventors have found that a composition can be obtained, and have reached the present invention.

That is, the present invention relates to (A) one or two or more selected from N-acylglycine and / or a salt thereof, and (B) glycerin and / or polyglycerol having an average polymerization degree of 2 to 10. It contains one or more selected polyhydric alcohols, and the weight ratio of (A) :( B) is 1: 0.5.
Neutral to weakly basic skin containing (C) 0.1 to 10% by weight of maltitol hydroxy aliphatic ether and (D) 0.1 to 10% by weight of fatty acid soap The present invention relates to a cleaning composition.

Hereinafter, the present invention will be described in detail. The acyl group of N-acylglycine and / or a salt thereof used in the present invention includes octanoyl, decanoyl, lauroyl,
Myristoyl, palmitoyl, stearoyl, oleoyl, linoleoyl, coconut oil fatty acyl, palm kernel oil fatty acyl, and the like.
Using one or more of acylglycine and / or its salts.

The salt of the N-acylglycine salt is not particularly restricted but includes, for example, alkali metal salts such as sodium salt and potassium salt, alkaline earth metal salts such as magnesium salt and calcium salt, and triethanolamine salt. And at least one selected from alkanolamine salts, ammonium salts, choline salts and basic amino acid salts such as lysine, ornithine and arginine.

In the present invention, N-acylglycine and / or
Or, the amount of the salt is not particularly limited,
Depending on the formulation of the intended skin cleansing composition, the amount can be arbitrarily selected, but 1 to 20% by weight based on the total amount of the skin cleansing composition in the case of a liquid, and 5% in the case of a cream.
The solid content is preferably about 50 to 50% by weight, and in the case of solid, about 40 to 65% by weight. Considering rich lathering, resilient creamy lather quality and ease of use, 10 to 40% by weight
It is particularly preferred that the composition is formulated into a creamy skin cleansing composition.

Examples of glycerin and / or polyglycerin having an average degree of polymerization of 2 to 10 used in the present invention include glycerin, diglycerin, triglycerin, tetraglycerin, hexaglycerin, decaglycerin and the like. Use one or more. Among them, diglycerin is most preferable from the viewpoint of foam quality, temperature stability and washing. The purity of diglycerin was 6
0% by weight or more is preferable, and 80% or more is more preferable.

In the present invention, N-acylglycine and / or a salt thereof is combined with glycerin and / or an average degree of polymerization of 2 to 2.
The weight ratio of polyglycerol to polyglycerin of 10 is 1: 0.5 to 2.
5, preferably 1: 1.0 to 2.0. If the blending amount of glycerin and / or polyglycerin having an average degree of polymerization of 2 to 10 is less than 0.5 part by weight with respect to 1 part by weight of N-acylglycine and / or a salt thereof, foam quality is poor and moist after washing. Feeling and temperature stability are insufficient.
When the amount of glycerin and / or polyglycerin having an average degree of polymerization of 2 to 10 exceeds 2.5 parts by weight based on 1 part by weight of N-acylglycine and / or a salt thereof, foaming and temperature stability occur. Properties, especially low-temperature stability.

By using N-acylglycine and / or a salt thereof and glycerin and / or polyglycerol having an average degree of polymerization of 2 to 10, a skin cleansing composition excellent in foam quality and moist feeling after washing can be obtained. However, by using the maltitol hydroxy aliphatic ether and the fatty acid soap together, foamability and high-temperature stability can be improved. Even when only one of the maltitol hydroxy aliphatic ether and the fatty acid soap is blended, the foaming property and the high-temperature stability cannot be improved.

Examples of the maltitol hydroxy aliphatic ether used in the present invention include maltitol-2-hydroxymyristyl ether, maltitol-2-hydroxylauryl ether, and maltitol-2-hydroxystearyl ether. Use one or more of these.

The amount of the maltitol hydroxyaliphatic ether is 0.1 to 0.1% based on the total amount of the skin cleansing composition.
It is 10% by weight, preferably 1 to 7% by weight. If the amount is less than 0.1% by weight, the foaming property and the high-temperature stability cannot be improved. If the amount is more than 10% by weight, it takes a long time to dissolve in water, which is a problem in sufficiently foaming.

The fatty acid soaps used in the present invention include sodium, potassium, triethanolamine, and sodium salts of fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, and oleic acid.
-Arginine salts and the like can be exemplified, and one or more of these are used.

The amount of the fatty acid soap is 0.1 to 10% by weight, preferably 1 to 10% by weight, based on the total amount of the skin cleansing composition.
7% by weight. If the amount is less than 0.1% by weight, the foaming property and the high-temperature stability cannot be improved. 10% by weight
If the amount exceeds the above range, it takes a long time to dissolve in water, which is a problem in sufficiently foaming.

The skin cleansing composition of the present invention has a pH of 7 to 8.
Neutral or weakly basic. For this reason, depending on the skin cleansing composition, if necessary, a pH adjuster such as an alkali compound such as sodium hydroxide or potassium hydroxide or an organic acid such as citric acid is appropriately used so as to have a pH of 7 to 8. .
When the pH exceeds 8, elastic creamy foam quality cannot be obtained. On the other hand, if the pH is less than 7, the foaming property and the low-temperature stability deteriorate, which is not preferable.

[0018] The skin cleansing composition of the present invention contains components commonly used without impairing the present invention, such as propylene glycol, dipropylene glycol, polyethylene glycol, 1,3-butylene glycol and erythritol. Polyhydric alcohols, sugars such as glucose, sucrose and maltose, sugar alcohols such as sorbitol and maltitol, surfactants other than acylglycine surfactants, for example, alkyl phosphates, acyl taurine salts, alkyl sulfates Anionic surfactants such as carbobetaine, amidobetaine, etc., nonionic surfactants such as alkyl glucosides, fatty acid alkanolamides, polyglycerin fatty acid esters, and other emollient components such as squalane, jojoba oil, olive oil, and hydroxy. Water-soluble polymers such as chill cellulose, methyl cellulose, pearling agents such as ethylene glycol distearate, anti-inflammatory effects and cell activation, agents of whitening effect, dyes, perfumes, preservatives, disinfectants, chelating agents,
An antioxidant and the like can be appropriately compounded.

The skin cleanser of the present invention can be produced according to a conventional method, and can be obtained, for example, by heating, mixing, and dissolving an N-acylglycine-based surfactant, a humectant, and water.

[0020]

EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples.

Examples 1 to 7 and Comparative Examples 1 to 11 The skin cleansing compositions described in Tables 1 and 2 were prepared, and each of the skin cleansing compositions was used by 20 specialized panelists using tap water at 40 ° C. The face was washed, and the sensory evaluation was performed on the foaming property, foam quality, ease of rinsing, clean and refreshing feeling of use, and moist feeling after washing. For each evaluation, a rating of 10
Based on the following criteria, a score was given as a perfect score of 0 and the average score of 20 people. The results are shown in Tables 1 and 2.

(Foaming property) ：: Evaluation point of 75 points or more (very good foaming) ○: Evaluation point of 50 points or more to less than 75 points (good foaming) Δ: Evaluation point of 25 points or more to less than 50 points (slightly foaming) X: Less than 25 points (bad foaming)

(Foam quality) ：: Evaluation point of 75 points or more (very creamy) ○: Evaluation point of 50 points or more to less than 75 points (creamy) Δ: Evaluation point of 25 points or more to less than 50 points (somewhat creamy) × : Less than 25 points (not creamy)

(Ease of rinsing) ：: Evaluation point of 75 points or more (very easy to rinse) ○: Evaluation point of 50 points or more to less than 75 points (easy to rinse) Δ: Evaluation point of 25 points or more to less than 50 points (easy rinsing) X): Less than 25 points (very difficult to rinse)

(Clean and refreshing feeling of use) 評 価: 75 or more evaluation points (very clean and refreshing) ○: 50 or more evaluation points and less than 75 points (clean and refreshing) △: Evaluation 25 points or more and less than 50 points (somewhat remaining feeling is felt) ×: Evaluation point less than 25 points (great feeling of remaining feeling)

(Moist feeling after washing) ：: Evaluation point 75 points or more (very moist) ○: Evaluation point 50 points or more to less than 75 points (moist) Δ: Evaluation point 25 points or more to less than 50 points ( X: Less than 25 evaluation points (not moist at all)

(Stability over time) After leaving the skin cleansing compositions prepared in Examples and Comparative Examples in a thermostat at 5 ° C. and 45 ° C. for one month, the condition was visually observed, and according to the following evaluation criteria. evaluated. ：: No change in state ×: Change in state such as separation is observed

[0028]

[Table 1]

[0029]

[Table 2]

The skin cleansing compositions shown in Examples 1 to 7 are all items such as foaming property, foam quality, ease of rinsing, clean and refreshing feeling of use, moist feeling after washing, and stability over time. Was also good. On the other hand, the skin cleansing compositions shown in Comparative Examples 1 to 11 have any of items such as foaming properties, foam quality, ease of rinsing, clean and refreshing feeling of use, moist feeling after washing, and stability over time. It was not enough.

[0031]

EFFECT OF THE INVENTION The skin cleansing composition of the present invention is rich in lather and elastic, creamy foam, is excellent in cleansing skin dirt and sebum, gives a very moist feeling after washing, and It is a skin cleansing composition having good temperature stability.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) C11D 10/02 C11D 10/02 (72) Inventor Miyamoto Atsuyuki 1-20-20 Rinkaicho, Izumiotsu-shi, Osaka Sakamoto Yakuhin Shinko Kogyo Co., Ltd. F term (reference) 4C083 AC121 AC122 AC181 AC182 AC242 AC302 AC392 AC661 AC662 AD041 AD042 CC23 DD23 DD27 EE01 EE06 EE07 4H003 AB03 AB10 AB44 AB46 AC05 DA02 EB05 EB06 EB08 EB09 FA16 FA17 FA18 FA21 FA23 FA28

Claims (2)

[Claims] (1) one or more selected from (A) N-acylglycine and / or a salt thereof, and (B) one selected from glycerin and / or polyglycerin having an average degree of polymerization of 2 to 10. One or more polyhydric alcohols, the weight ratio of (A) :( B) is 1: 0.5-2.5, and (C) maltitol hydroxy aliphatic ether is 0.1-2.5. 10% by weight and (D) fatty acid soap 0.1-1
A neutral to weakly basic skin cleanser composition containing 0% by weight. 2. The skin cleansing composition according to claim 1, wherein the polyglycerin having an average degree of polymerization of 2 to 10 is diglycerin.