JPH06293629A - Cleansing agent composition having pearly luster - Google Patents

Abstract

PURPOSE:To obtain the subject composition having mild action on skin, excellent foaming power and improved stability, comprising an ethylene glycol difatty acid ester, an isethionate type ionic surfactant and a polyoxyethylene alkyl ether acetate. CONSTITUTION:This cleansing agent composition is obtained by combining an ethylene glycol difatty acid ester having a composition of 20-80% of 14C, 0-80% of 16C and 0-80% of 18C (with the proviso that total of 16C and 18C is 20-80%) with an isethionate type ionic surfactant of formula I (R is 7-19C alkyl or alkenyl; M is alkali metal, NH4) or alkanolammonium ion) and a polyoxyethylene alkyl ether acetate of formula II (R is 12-18C alkyl; (n) is 2-10; M is H, Na, K, NH4) or alkanolammonium ion) and has a pearly luster. Preferably the amount of the compound of formula I is 9-30wt.% and that of the surfactant of formula II is 1-15wt.% (with the proviso that total of these two surfactants is 10-45wt.% based on the whole amount of the composition).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a face wash composition having a mild action on the skin, an excellent foaming power, and a pearly luster with good stability.

[0002]

2. Description of the Related Art Conventionally, the problems to be solved by the invention
Alkyl sulfates, polyoxyethylene alkyl ether sulfates and α-
Anionic surfactants such as olefin sulfonates are widely used. However, all of these anionic surfactants have the drawback of inducing skin irritation to varying degrees.

Further, it has been conventionally known to add natural fish phosphorus foil or to add pearl pigments such as bismuth oxychloride, mica and titanium for the purpose of imparting a high-class feeling. Raw materials are expensive, there are problems with light resistance and safety,
It has various drawbacks such as the pearlescent agent settling during storage. Further, although ethylene glycol distearate is widely used as a pearly luster agent, it has a drawback that it melts and dissolves at a temperature of about 40 to 50 ° C. and significantly impairs the appearance.

In view of the above circumstances, the present inventors have conducted intensive studies, and as a result, as a result, a facial cleanser composition containing ethylene glycol difatty acid ester, an isethionate type anionic surfactant and polyoxyethylene alkyl ether acetate was found. It has been found that the present invention provides a face wash composition having a mild action on the skin, an excellent foaming power, and a pearly luster having good stability.

That is, an object of the present invention is to provide a face wash composition having a mild action on the skin, an excellent foaming power, and a stable pearly luster.

[0006]

According to the present invention for achieving the above object, the fatty acid composition is such that C ₁₄ is 20 to 80% and C ₁₆ is 0 to 8.
Ethylene glycol difatty acid ester of 0%, C ₁₈ is 0 to 80%, but the total amount of C ₁₆ and C ₁₈ is 20 to 80%, and general formula (A)

[Chemical 3] (Wherein R represents an alkyl or alkenyl group having 7 to 19 carbon atoms, M represents an alkali metal, NH ₄ or alkanol ammonium ion), and an isethionate-type anionic surfactant represented by the general formula (B )

[Chemical 4] (In the formula, R is an alkyl group having 12 to 18 carbon atoms, and n is 2 to
Represents the number 10. M is a hydrogen atom or Na, K, NH ₄ ,
Alternatively, it represents an alkanol ammonium ion. And a polyoxyethylene alkyl ether acetate represented by the formula (1), which is a facial cleansing composition having a pearly luster.

The amount of ethylene glycol difatty acid ester used in the present invention is generally 3 to 20% by weight.
And preferably 7 to 13% by weight. Compounding amount is 3
When it is less than 20% by weight, it is difficult to obtain a good and stable pearly luster, and when it exceeds 20% by weight, the foaming power tends to be poor.

The isethionate-type anionic surfactant represented by the general formula (A) in the present invention includes sodium coconut oil fatty acid ethyl ester sulfonate (YS-).
Na), sodium lauric acid ethyl ester sulfonate (abbreviated as LS-Na), coconut oil fatty acid ethyl ester sulfonic acid triethanolamine (YS)
(Abbreviated as -T) and the like are preferable.

Examples of the polyoxyethylene alkyl ether acetate represented by the general formula (B) in the present invention include polyoxyethylene (2) sodium lauryl ether acetate, polyoxyethylene (4.5) sodium tridecane ether acetate and poly Examples include polyoxyethylene alkyl ether acetates such as oxyethylene (6) myristyl ether ammonium acetate, polyoxyethylene (8) palmityl ether acetate diethanolamine, and polyoxyethylene (10) stearyl ether acetate triethanolamine.

The amount of the surfactant of the general formula (A), which is a component of the facial cleansing composition of the present invention, is 9 to 30% by weight, and the amount of the surfactant of the general formula (B) is 1 to 15% by weight, but the total amount of the surfactants of the general formula (A) and the general formula (B) is preferably 10 to 45% by weight based on the total amount of the face wash composition. If the blending amount is less than 10% by weight, it is difficult to obtain sufficient foaming power, and if it exceeds 45% by weight, it becomes difficult to obtain a uniform and stable composition.

The facial cleansing composition having a pearly luster of the present invention is applied in a liquid form, a gel form or a cream form, and the effect of the present invention is sufficiently exhibited particularly in a cream form.

In addition to the above-mentioned essential components, the facial cleansing composition of the present invention may contain components or additives that are commonly used in facial cleansing compositions. For example, higher alcohol, silicone oil, lanolin derivative, protein derivative, oily component such as fatty acid ester of polyethylene glycol,
Nonionic surfactants such as fatty acid alkanolamides, polyoxyethylene alkyl ethers and alkylamine oxides, amphoteric surfactants such as alkylamidopropyl betaine, water-soluble polymers such as hydroxypropylmethyl cellulose and hydroxyethyl cellulose, cationic polymers [Polymer JR (Union Carbide Corporation), Polycoat NH (Henkel) Mercoat 550 (Merck), Gaff Cut 755N (GA
Company F), etc.], bactericide, antioxidant, ultraviolet absorber, p
An H-adjusting agent, a dye, a fragrance, etc. can be included.

[0013]

The present invention will be described in more detail with reference to examples. The effect was measured by the following evaluation method.

(1) Foaming test method The foaming force was measured according to the Loss Miles test method. However,
The sample is a 2% aqueous solution (using CaCO ₃ 50 ppm artificial hard water) at a temperature of 40 ° C. Evaluation symbol Evaluation criteria ◎: Very good foaming, foaming power of 250 mm or more ○: Good foaming, foaming power of 210 mm or more, 250 mm
Less than Δ: Foaming is normal, foaming power is 170 mm or more, 210 mm
Less than x: Poor foaming, foaming power less than 170 mm

(2) Hand Roughness Test Method (Skin Irritation) For each sample, 5 male and 5 female panelists, 10 in total, were used, one of the left and right hands had a sample concentration of 5% and a temperature of 35.
An operation of immersing the other hand in water having the same temperature for 10 minutes in an aqueous solution at 0 ° C. was performed twice a day for two consecutive days, and the difference between the rough skin conditions of the left and right hands was visually determined. Evaluation symbol Evaluation criteria ◎: Hand roughness is extremely weak 0 to 1 out of 10 ○: Hand roughness is slightly weak 2 to 4 out of 10 △: Hand roughness is slightly strong 5 to 7 out of 10 ×: Hand roughness is extremely strong 10 8 to 10 people

(3) Storage stability test The sample was left in a thermostatic chamber at a temperature of 45 ° C., and the presence or absence (number of days) of a pearly appearance was observed (visually determined).

Examples 1 to 6 and Comparative Examples 1 to 4 A face wash composition having a pearly luster of the compounding composition shown in Tables 1 and 2 was prepared by a usual method, and the above test was carried out.
The results are shown in.

[0018]

[Table 1]

[0019]

[Table 2]

[0020]

[Table 3]

As is clear from Examples 1 to 6, all the face cleansing compositions using the components of the present invention showed excellent performance. On the other hand, Comparative Example 1 lacking any of the essential components
Nos. 4 to 4 all showed inferior performance and could not achieve the object of the present invention.

[0022]

As described above, it is apparent that the present invention provides a face wash composition having a mild action on the skin, an excellent foaming power and a pearly luster with good stability. is there.

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Claims (1)

[Claims] 1. A fatty acid composition having a C ₁₄ content of 20 to 80% and a C ₁₆ content.
Is 0 to 80%, C ₁₈ is 0 to 80%, but the total amount of C ₁₆ and C ₁₈ is 20 to 80%, and an ethylene glycol difatty acid ester of the general formula (A) (Wherein R represents an alkyl group or alkenyl group having 7 to 19 carbon atoms, M represents an alkali metal, NH ₄ or alkanol ammonium ion), and an isethionate type anionic surfactant represented by the general formula (B ) [Chemical 2] (In the formula, R is an alkyl group having 12 to 18 carbon atoms, and n is 2 to
Represents the number 10. M is a hydrogen atom or Na, K, NH ₄ ,
Alternatively, it represents an alkanol ammonium ion. And a polyoxyethylene alkyl ether acetate represented by the formula (1).