JP2001213760A - Skin cleaning agent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a skin cleaning agent composition which is excellent in foamability and also having humidity keeping property and obtaining good humid and smooth skin feeling, therefore, not requiring to coat the skin with a cream, a lotion or the like for oil supply, and very high in its practical usage. SOLUTION: This skin cleaning agent composition contains a following component (A), (B), (C); (A) one or more kinds selected from among an anionic surfactant, a nonionic surfactant, (wherein, poly(oxyethylene)glycerine fatty acid ester is excepted), (B) a poly(oxyethylene)glycerine fatty acid ester and (C) silicones having a surface tension of 20 mN/m or more.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detergent composition which has both detergency and moisturizing properties, and has a moist and smooth skin feel after cleaning.

[0002]

2. Description of the Related Art A body cleansing agent contains a surfactant as a main component and is intended to wash away dirt such as sebum and sweat, but it also contains a moisturizing component necessary for the skin. Drop it. For this reason, it is known that phenomena such as a decrease in the amount of keratin water and a decrease in barrier ability occur in the washed skin. Therefore, in order to maintain a moist and smooth feeling, it is common to apply a cream, lotion or the like after washing to replenish the oil.

[0003] However, in this case, two steps of washing and coating must be performed, which is not preferable because of lack of quickness and simplicity. On the other hand, if an oil agent is simply blended into a cleaning agent, problems such as a decrease in foaming power occur, and the present situation is that satisfactory products cannot be obtained.

[0004] It is an object of the present invention to provide a skin cleansing composition having a high moisturizing property and a moist and smooth skin feel after washing while sufficiently maintaining the basic performance of the cleansing agent such as foaming properties. And

[0005]

Means for Solving the Problems In view of this situation, the present inventors have conducted various studies on the blending of a surfactant and an oil agent, and found that a silicone having a surfactant and a specific surface tension can be added to polyoxyethylene. When a detergent composition containing a glycerin fatty acid ester is added, while maintaining sufficient foaming properties, the polyoxyethylene glycerin fatty acid ester performs an adhesive function between the skin and the silicone, so that the silicone easily remains on the skin. Thus, the present inventors have found that a high moisturizing property after washing and a moist and smooth good skin feel can be obtained, and the present invention has been completed.

That is, the present invention provides the following component (A):
(B) and (C); (A) one or more selected from anionic surfactants, nonionic surfactants (excluding polyoxyethylene glycerin fatty acid esters) and amphoteric surfactants, An object of the present invention is to provide a skin cleansing composition comprising (B) a polyoxyethylene glycerin fatty acid ester, and (C) a silicone having a surface tension of 20 mN / m or more.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION (A) of the skin cleansing composition of the present invention
Examples of the anionic surfactant in the component include alkyl phosphates, polyoxyethylene alkyl ether phosphates, alkyl sulfonates, alkyl sulfates, acylated amino acid salts, polyoxyethylene alkyl ether sulfates, and alkylbenzenes. Sulfonate, N-acyl-N-methyltaurate, alpha olefin sulfonate, higher fatty acid ester sulfonate, alkyl ether acetate, polyoxyethylene alkyl ether acetate, fatty acid amide acetate, polyoxyethylene fatty acid amide Acetate, fatty acid soap and the like can be mentioned. Among them, polyoxyethylene alkyl ether sulfates such as sodium polyoxyethylene lauryl ether sulfate, N-acyl-β-alanine salts such as N-lauroyl-β-alanine salt, monoalkyl phosphates, polyoxyethylene lauryl ether acetates And polyoxyethylene fatty acid amide acetates such as polyoxyethylene alkyl ether acetate and polyoxyethylene lauryl amide acetate. The salts used here are preferably metal salts such as sodium, potassium and magnesium; ammonium salts; organic ammonium salts such as monoethanolammonium, diethanolammonium and triethanolammonium salts.

As the nonionic surfactant, those excluding the polyoxyethylene glycerin fatty acid ester of the component (B), for example, polyoxyethylene fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyethylene sorbitan fatty acid ester, glycerin fatty acid Examples include esters, polyoxyethylene alkyl ethers, polyoxyethylene polyoxypropylene glycols, and the like. Among them, polyoxyethylene fatty acid esters such as polyethylene glycol monostearate, polyoxyethylene alkyl ethers such as polyoxyethylene lauryl ether, polyoxyethylene (160) polyoxypropylene (30) glycol, and the like are preferable.

Examples of the amphoteric surfactant include a carbobetaine surfactant, an amidobetaine surfactant, a sulfobetaine surfactant, a hydroxysulfobetaine surfactant, an amidosulfobetaine surfactant, and a phosphobetaine surfactant. Examples include surfactants, imidazolium betaine surfactants, and amido betaine surfactants such as amine oxide surfactants. Among them, hydroxysulfobetaine surfactants such as amidopropylbetaine and laurylhydroxysulfobetaine, 2-alkyl-N
Preferred are imidazolium betaine surfactants such as -carboxymethyl-N-hydroxyethylimidazolinium betaine, and amine oxide surfactants such as lauryl dimethylamine oxide.

As the surfactant (A), one kind may be used alone, or two or more kinds may be used in combination.
Above all, an anionic surfactant is preferable from the viewpoint of detergency such as foaming property, and it is particularly preferable to use a combination of an anionic surfactant and an amphoteric surfactant. The mixing ratio in this case is preferably 0.1 to 5 parts by weight of the amphoteric surfactant per 1 part by weight of the anionic surfactant.

The amount of the component (A) as a surfactant varies depending on the type of the detergent.
The content is preferably 60% by weight, and particularly preferably 10 to 50% by weight, which has good foam quality and foam amount.

The polyoxyethylene glycerin fatty acid ester as the component (B) is not particularly limited as long as it can maintain the foaming properties of the surfactant and the moisture retention properties of the silicones. And a monofatty acid ester having good skin adhesion, specifically, a fatty acid ester represented by the following (1) is preferable.

[0013]

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(Wherein, R represents an aliphatic hydrocarbon group having 6 to 22 carbon atoms, 1 represents an integer of 0 to 20, and m and n each represent an integer of 1 to 30).

As the fatty acid species of the formula (1), those having 6 to 6 carbon atoms
22, preferably 12 to 20 saturated or unsaturated fatty acids, particularly preferably oleic acid and isostearic acid. Also, 1 is preferably from 0 to 5, particularly preferably 0. The preferred number of moles of polyoxyethylene in one molecule is from 1 to 30.
, More preferably 3 to 20, and even more preferably 5 to 15.

Component (B) is used in an amount of 0.1 to 20% by weight, particularly 0.5
It is preferably from 10 to 10% by weight.

Examples of the silicone having a surface tension of component (C) of 20 mN / m or more include linear, branched, cross-linked or cyclic silicone containing methylpolysiloxane, alkyl-modified, amino-modified, fluorine-modified or silicone-modified silicone. Water-insoluble modified silicones such as acryl-modified are mentioned, and hydrophobic ones substantially insoluble in water are preferred.
When the surface tension is less than 20 mN / m, the foaming property is reduced and the moisture retention is insufficient. The preferred surface tension is 20 to 22 mN / m, particularly 21 to 22 mN / m.
m is preferred. In the present invention, the surface tension is 25 ° C.
It was measured using a platinum plate with a BVP surface tensiometer in a constant temperature room at a relative humidity of 60%. Among such silicones, those having a higher surface tension are preferred in that they have a good skin feel and a low defoaming effect, and particularly preferred are highly polymerized methylpolysiloxanes.

The amount of the component (C) is 0.5
It is preferable to set it to 50% by weight, especially 1-20% by weight.

In the present invention, the ratio (weight ratio) of component (B) / component (C) is determined from the viewpoints of foamability and moisture retention.
It is preferably from 1/10 to 10/1, particularly preferably from 1/5 to 5/1.

In the skin cleansing composition of the present invention, in addition to the above-mentioned essential components, conventionally used cleansing additives, ie, viscosity modifiers such as anionic, nonionic and cationic polymers; polyols Moisturizing ingredients such as amides (coconut oil fatty acid monoethanolamide, coconut oil fatty acid diethanolamide, lauric acid monoethanolamide, lauric acid diethanolamide, lauric acid isopropanolamide, isostearic acid diethanolamide, etc.) or fatty acids (coconut oil fatty acid, Foaming agents such as lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, behenic acid, etc .; other preservatives, antioxidants, stabilizers, pH adjusters, fragrances, pigments, etc. It can be blended within a range that does not impair the effect.

The skin cleansing composition of the present invention can be produced by a conventional method. For example, the components (A), (B),
It is preferably prepared by dissolving or dispersing the component (C) and optional components in water. In addition, dosage form, viscosity, p
H is not particularly limited, but is preferably in the form of a liquid or a cream.

The thus obtained skin cleansing composition of the present invention maintains high basic properties such as foaming properties and foaming properties of a surfactant as shown in Examples described later, and has high moisture retention and after washing. Since it has a moist and smooth skin feel, it is particularly preferable to use a whole body detergent, a face wash or the like.

[0023]

Next, the present invention will be described in detail with reference to examples.

Example 1 A whole body cleanser having the following formulation was prepared. This composition was superior in foaming properties and foam quality as compared with the compositions of Comparative Examples 1 to 5, and had a good skin feel after towel drying. Table 1 shows the evaluation results. The following percentages indicate% by weight.

Polyoxyethylene (2) sodium lauryl ether sulfate solution (27%) 60% Amidopropyl betaine laurate solution (30%) 20% Dimethyl silicone * 3% Polyoxyethylene monooleate (10) glyceryl 2% Capryl Acid mono / diglyceride 4% Lauric acid 2% Fragrance 0.8% Purified water Balance * KF96-1000 manufactured by Shin-Etsu Chemical Co., Ltd., surface tension: 21.2mN / m

Comparative Example 1 Polyoxyethylene (2) sodium lauryl ether sulfate solution (27%) 60% Amidopropyl betaine laurate solution (30%) 20% Caprylic acid mono / diglyceride 4% Lauric acid 2% Flavor 0.8 % Purified water balance

Comparative Example 2 Polyoxyethylene (2) sodium lauryl ether sulfate solution (27%) 60% Amidopropyl betaine laurate solution (30%) 20% Polyoxyethylene (10) glyceryl monooleate 2% Monocaprylate / Diglyceride 4% Lauric acid 2% Fragrance 0.8% Purified water Balance

Comparative Example 3 Polyoxyethylene (2) sodium lauryl ether sulfate solution (27%) 60% Amidopropyl betaine laurate solution (30%) 20% Dimethyl silicone * 3% Mono / diglyceride caprylate 4% Lauric acid 2 % Perfume 0.8% Purified water Balance * KF96-1000 manufactured by Shin-Etsu Chemical Co., Ltd., surface tension: 21.2 mN / m

Comparative Example 4 Polyoxyethylene (2) sodium lauryl ether sulfate solution (27%) 60% Amidopropyl betaine laurate solution (30%) 20% Polyoxyalkylene-modified organopolysiloxane * 3% Polyoxy monooleate Ethylene (10) glyceryl 2% Caprylic acid mono / diglyceride 4% Lauric acid 2% Fragrance 0.8% Purified water Balance * KF354A manufactured by Shin-Etsu Chemical Co., Ltd.

Comparative Example 5 Polyoxyethylene (2) sodium lauryl ether sulfate solution (27%) 60% Amidopropyl betaine laurate solution (30%) 20% Cyclic silicone * 3% Polyoxyethylene (10) glyceryl monooleate 2% Caprylic acid mono / diglyceride 4% Lauric acid 2% Fragrance 0.8% Purified water Balance * KF-995 manufactured by Shin-Etsu Chemical Co., Ltd., surface tension: 17.8 mN / m

[0031]

[Table 1]

Example 2 A whole body cleaning agent having the following formulation was prepared. This foam had excellent foaming properties and foam quality, and also had a good skin feel after towel drying.

Potassium laurate 20% Amidopropyl betaine laurate (30%) 15% Highly polymerized methylpolysiloxane * 1% Dimethyl silicone ** 3% Polyoxyethylene (15) glyceryl monostearate 2% Cocoyl monoethanolamide 3 % Purified water balance * Toray Dow Corning Silicone Co., Ltd., surface tension: 21.5 mN / m ** Toray Dow Corning Silicone Co., Ltd., surface tension: 21.5 mN / m

Example 3 A whole body cleansing agent having the following formulation was prepared. This foam had excellent foaming properties and foam quality, and also had a good skin feel after towel drying.

Potassium monoalkyl phosphate solution (33%) 50% Laurylhydroxysulfobetaine solution (30%) 20% Highly polymerized methylpolysiloxane * 2% Isoparaffin 2% Polyoxyethylene monostearate (15) glyceryl 2% Capryl Acid mono / diglyceride 4% Lauric acid 2% Purified water Balance * Toray Dow Corning Silicone Co., Ltd., surface tension: 21.5 mN / m

Example 4 A whole body cleaning agent having the following formulation was prepared. This foam had excellent foaming properties and foam quality, and also had a good skin feel after towel drying.

Potassium monoalkyl phosphate solution (33%) 35% Polyoxyethylene (2) sodium lauryl ether sulfate solution (27%) 15% Amidopropyl betaine laurate solution (30%) 15% Dimethyl silicone * 3% Mono Polyoxyethylene oleate (10) glyceryl 2% Sorbitan trioleate 1.5% Trimethyl glycine 1.5% Lauric acid 1.5% Glyceryl monocaprate 1% Purified water Balance * KF96- manufactured by Shin-Etsu Chemical Co., Ltd. 1000, surface tension: 21.2 mN / m

[0038]

EFFECTS OF THE INVENTION The skin cleansing composition of the present invention is excellent in foaming properties, and has a moisturizing property and a moist and smooth skin feeling. Therefore, even after washing, it is not necessary to apply a cream, a lotion, or the like to replenish the oil content, and it is extremely practical.

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Yuri Nishiwaki 2-1-3 Bunka, Sumida-ku, Tokyo Kao Corporation Research Laboratory F-term (reference) 4C083 AC012 AC182 AC242 AC421 AC422 AC442 AC642 AC712 AC902 AD151 AD152 BB04 BB05 BB07 CC02 CC23 EE06 EE07 EE12 4H003 AB31 AC03 AC10 AC12 AD04 BA12 DA02 EB09 EB37 ED02 FA18 FA21

Claims (3)

[Claims] 1. The following components (A), (B) and (C); (A) anionic surfactant, nonionic surfactant (excluding polyoxyethylene glycerin fatty acid ester) and amphoteric A skin cleansing composition comprising one or more selected from surfactants, (B) a polyoxyethylene glycerin fatty acid ester, and (C) a silicone having a surface tension of 20 mN / m or more. 2. Component (B) a polyoxyethylene glycerin fatty acid ester represented by the following general formula (1): (Wherein, R represents an aliphatic hydrocarbon group having 6 to 22 carbon atoms, 1 represents an integer of 0 to 20, m and n each represent 1
The skin cleansing composition according to claim 1, which is a monofatty acid ester represented by the following formula: 3. The skin cleansing composition according to claim 1, wherein the ratio (weight ratio) of component (B) / component (C) is from 1/10 to 10/1.