JP2017137273A - Powdery or granular skin cleansing agent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a powdery or granular skin cleansing agent that is characterized by quick foaming, a large amount of foam, and a smooth feeling after rinsing.SOLUTION: A powdery or granular skin cleansing agent comprises N-acylglutamic acid salt, and wax with a melting point of 70°C or more.SELECTED DRAWING: None

Description

  The present invention relates to a powder or granular skin cleanser.

  The powdery skin cleanser is prepared by mixing and pulverizing a cleaning agent and an inorganic powder or organic powder as a builder. Moreover, when using it as a granular skin washing | cleaning material, it granulates on the optimal conditions after mixing and grinding | pulverizing, and is prepared. Powdered or granular skin cleansers do not contain water compared to liquids and gels, so they can be commercialized without the addition of preservatives and disinfectants, making it possible to provide safer products. is there. However, powdered or granular skin cleansers have a drawback in that they do not dissolve uniformly when dissolved in water with palms or sponges, and a lump called “dama” or “pasm” is formed. In addition, the foaming property is inferior to that of liquid or gel. In particular, N-acyl glutamate is weakly acidic and less irritating to the skin, so it is frequently used as a highly safe cleaning component. Inferiority was a drawback.

  The present applicant has added cationized dextran in the prescription to improve the solubility at the time of use, improve the solubility at the time of use, and has excellent foaming properties. A powdery skin cleanser with improved usability was proposed (Patent Document 1: Japanese Patent No. 4712222). Further, a powdery detergent composition excellent in foaming, which contains N-acyl glutamate or higher fatty acid salt, polyamino acid and neutral amino acid (Patent Document 2: Japanese Patent No. 4253687), N-acyl glutamic acid A powdery cleaning material (Patent Document 3: Japanese Patent No. 5562986) excellent in foam quality and foamability, in which a salt and a cyclic glucan having a cyclic structure, hydroxypropyl starch phosphate, and polydextrose are blended has been proposed.

Furthermore, although not disclosed at the time of filing of the present invention, a powdery skin cleansing agent containing N-acyl glutamate and a fatty acid amidoalkyldimethylamine oxide and improved in foaming speed and foam quality (Patent Document 4: Patent application) No. 2015-0697958), a powdery skin cleanser that improves the speed of foaming and foam quality by blending N-acyl glutamate and N-fatty acid acylaminoethyl-N-2-hydroxyethylglycine salt (Patent Document 5: Japanese Patent Application No. 2015-068622) was proposed.
However, further improvement in performance is required for the speed of foaming, the amount of foam, and foam quality.

On the other hand, as a feature other than foaming and foam quality, there is a demand for a skin cleanser that provides a smooth feel during rinsing. For example, a solid detergent composition containing a fatty acid salt, an acyl isethionate, and a solid fat, and having a smooth feel during rinsing (Patent Document 6: Japanese Patent Laid-Open No. 2008-189872), an acyl isethionate and an anionic surfactant A skin cleanser composition containing 2-ethylhexyl glyceryl ether and giving a feeling of smoothness when touched with a finger immediately after flushing the cleanser with tap water (Patent Document 7: JP-A-2015-124214), A facial cleanser (Patent Document 8: Japanese Patent Application Laid-Open No. 2008-100921) is proposed that contains a viscous polymer compound, an N-acylamino acid type surfactant, and an alkylaminodicarboxylic acid type surfactant, and has an excellent slippery feeling after washing. ing.
There is a need for a cleansing agent that provides a smooth feel when rinsing, but there is no powder skin cleansing agent that can provide such a feeling sufficiently. There is a need for improvement. The present invention is a powdered skin cleansing agent that seeks to achieve its feel.

  In addition, a wax having a melting point of 70 ° C. or higher is a soft and smooth wax-like solid at room temperature. Wax having a melting point of 70 ° C. or higher is generally used in cosmetics for glossing lipstick and improving temperature resistance, but is not generally used in detergents. In addition, no attempt has been made to pulverize the wax into a powder or granular skin cleanser.

Japanese Patent No. 4712222 Japanese Patent No. 4253687 Japanese Patent No. 5562986 Japanese Patent Application No. 2015-0697958 Japanese Patent Application No. 2015-068622 JP 2008-189872 A JP-A-2015-124214 JP 2008-1000092 A1

  An object of the present invention is to provide a powdery or granular skin cleanser excellent in the speed of foaming, the amount of foam, and the smooth feeling after washing.

1. A powdery or granular skin cleanser comprising N-acylglutamate and a wax having a melting point of 70 ° C. or higher.
2. 1. The N-acyl glutamate and the wax having a melting point of 70 ° C. or more are blended in a mass ratio of 100: 1 to 1: 1. The skin cleansing agent as described in 1.

  The skin cleansing agent of the present invention is superior in solubility compared to conventional powdery skin cleansing agents, and when dissolved in water, “dama” and “spoilage” are not easily generated and can be quickly foamed. . The powder or granular skin cleanser needs to be foamed before use, but the skin cleanser of the present invention can be foamed without feeling stress. Moreover, since the amount of foam of the skin cleansing material of the present invention is large, the skin contact is gentle, and the burden on the skin given during cleaning is small. Moreover, the skin cleansing agent of the present invention is excellent in a smooth feeling after being washed away, and it is possible to feel that the skin is clean and the skin surface becomes smooth and beautiful.

  The skin cleanser of the present invention is excellent in a smooth feeling after being washed away. According to Kojien (Iwanami Shoten), “Smooth” means “(1) The movement is smooth and smooth. (2) The surface is smooth and easy to slide.” ing. The slippery feeling after rinsing refers to a state where the skin is wet after rinsing and moves smoothly so that the finger slips when the skin is touched with a finger, that is, the finger moves without resistance. It can be said that the touch is not sticky, sticky, or caught by friction. In the powder skin cleansing agent form, there is not much stickiness or sliminess, but depending on the surfactant or moisturizing agent to be blended, there may be a problem of stickiness or sliminess. In addition, in powder skin cleansers, the sebum is removed and the soap residue (scum) remains on the skin, creating a feeling of friction between the skin and the fingers, resulting in a “scramble” (“tuck”) feel. Is a problem. Such “scrambled” may be recognized as a touch due to the removal of sebum and dirt, but is a touch different from smooth skin and is not generally considered a preferable touch. There is no need for stickiness or slipperiness, and there is no frictional sensation, and the “smooth” feel is required to recall the feeling that the skin has become smooth and beautiful after washing.

Examples of the N-acyl glutamate used in the present invention include N-lauroyl glutamate, N-myristoyl glutamate, N-palmitoyl glutamate, N-stearoyl glutamate, N-oleoyl glutamate and the like. Moreover, N- (palm fatty acid / palm fatty acid / sunflower fatty acid) acyl glutamate, N-coconut oil fatty acid acyl glutamate, N-palm oil fatty acid acyl glutamate, N-hydrogenated beef tallow fatty acid acyl glutamate and the like as a mixture thereof Is mentioned. Examples of the salt include alkali metal salts such as sodium and potassium, alkanolamine salts such as triethanolamine, and basic amino acid salts such as lysine and arginine.
The amount of N-acyl glutamate used in the present invention is preferably 1 to 99% by mass, more preferably 10 to 50% by mass, and particularly preferably 15 to 40% by mass in the powder or granular skin cleanser.

Examples of the wax having a melting point of 70 ° C. or higher used in the present invention include rice bran wax, carnauba wax, and candelilla wax. Commercially available products can be used as the wax having a melting point of 70 ° C. or higher used in the present invention. For example, rice bran wax (“Purified Rice Wax S-100” melting point 78 ° C., manufactured by Yokoseki Oil & Fat Co., Ltd.), carnauba wax (Yokoseki oil and fat). “Purified Carnauba Wax R-100” melting point 83 ° C. manufactured by Kogyo Co., Ltd., Candelilla wax (“Purified Candelilla Wax MK-7” melting point 77 ° C. manufactured by Yokoseki Yushi Kogyo Co., Ltd.), Candelilla wax (Yokoseki Yushi) “Refined Candelilla Wax MK-4” melting point 71 ° C. manufactured by Kogyo Co., Ltd.) and the like.
The wax having a melting point of 70 ° C. or higher used in the present invention is preferably crushed by a pulverizer and sieved with a sieve having an opening of 300 μm or less, and particularly preferably sieved with a sieve having a mesh size of 180 μm or less. If a compound having a particle size exceeding 300 μm is blended, there is a risk of irritation during washing.
The blending amount of the wax having a melting point of 70 ° C. or higher used in the present invention is preferably 0.1 to 50% by mass, more preferably 0.5 to 10% by mass, and particularly preferably 1 to 5% by mass.

  The mass ratio of the N-acyl glutamate used in the present invention to a wax having a melting point of 70 ° C. or higher is preferably 100: 1 to 1: 1, more preferably 80: 1 to 5: 1, and 50: 1 to 8: 1. Is particularly preferred.

Other Compounding Components In the skin cleansing material of the present invention, an anionic surfactant other than N-acyl glutamate, an amphoteric surfactant, a cationic surfactant, and a nonionic surfactant can be blended as a surfactant.
Anionic surfactants include higher fatty acid salts, N-acylalanine salts, N-acylmethyl taurate salts, N-acyl isethionate salts, N-acyl glycine salts, monoalkyl phosphates, ether carboxylates, alkyl sulfones. Acid salts, sulfosuccinates, fatty acid amidoalkyldimethylamine oxides and the like. Examples of amphoteric surfactants include carbobetaine surfactants, sulfobetaine surfactants, amide betaine surfactants, and imidazoline surfactants.

  The skin cleanser of the present invention includes sugars, sugar alcohols, higher alcohols, organic powders, inorganic powders, polymers, preservatives, sequestering agents, UV absorbers, UV blockers, moisturizers, A fragrance | flavor, a pH adjuster, a desiccant, etc. can be contained. Other medicinal ingredients and physiologically active ingredients can also be contained.

  Examples of sugars and sugar alcohols include glucose, sorbitol, mannose, mannitol, galactose, galactitol, maltose, maltitol, trehalose, erythrose, erythritol, xylose, xylitol, sucrose, lactose, lactitol, difructose anhydride, etc. It is done.

  Examples of higher alcohols include cetanol, stearyl alcohol, aralkyl alcohol, behenyl alcohol, and lignoceryl alcohol.

Examples of the organic powder include polyethylene powder, polystyrene powder, polymethyl methacrylate powder, nylon powder, polyurethane powder, agar powder, cork powder, and starch.
Examples of the inorganic powder include talc, kaolin, silica, mica, zeolite, bentonite, and titanium dioxide.

  Examples of polymers include gum arabic, gum tragacanth, galactan, guar gum, carrageenan, pectin, xanthan gum, quince seed, dextran, cationized dextran, pullulan, carboxymethyl starch, collagen, casein, gelatin methylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose Carboxymethylcellulose sodium, hydroxypropylmethylcellulose, sodium alginate, carboxyvinyl polymer and the like.

Examples of the sequestering agent include edetates such as disodium ethylenediaminetetraacetate, edetic acid, and sodium edetate.
Medicinal components include vitamin C such as L-ascorbic acid, L-ascorbic acid phosphate, L-ascorbic acid monopalmitate, L-ascorbic acid dipalmitate, L-ascorbic acid-2-glucoside, etc. Whitening agents such as glutathione and yukinoshita extract, skin activators such as royal jelly, blood circulation promoters such as capsaicin, gingeron, cantalis tincture, ictamol, caffeine, γ-oryzanol tannic acid, glycyrrhizic acid derivatives, glycyrrhetinic acid derivatives, Examples include anti-inflammatory agents such as azulene, maltose sucrose condensates of resident bacteria control agents, and lysozyme chloride.

The skin cleansing composition of the present invention is in the form of powder or granules.
The skin cleanser of the present invention can be used for face washing and body washing.

As Examples 1-4 and Comparative Examples 1-4, each component was mix | blended by the mass ratio shown in Table 1, and the face-washing powder was prepared. Rice bran wax ("Purified Rice Wax S-100" manufactured by Yokoseki Oil & Fat Co., Ltd.), Candelilla wax ("Purified Candelilla Wax MK-4" manufactured by Yokoseki Oil & Fat Co., Ltd.), stearyl alcohol (higher alcohol industry ( “Stearyl alcohol”) was pulverized with a mixer and sieved with a sieve having an opening of 180 μm. As the stearic acid, “Nippon Stearic Acid NAA-180P-1” manufactured by NOF Corporation supplied in powder form was used as it was. As behenic acid, “behenic acid NAA-222S” manufactured by NOF Corporation supplied in powder form was used as it was.
The speed of foaming of the prepared face washing powder, the amount of foam, and the smooth feeling after washing were evaluated according to the following criteria.

Evaluation of the speed of foaming 10 expert panelists put 1g of facial cleansing powder on their palms, add about 2 to 3mL of tap water, rub them together for about 20 seconds, and add 3mL of tap water. The foaming operation was performed so that air was involved in the foam. The total foaming time was 1 minute, and the speed of foaming during the foaming operation was observed.
Using the speed of foaming of the face washing powder of Comparative Example 1 as a standard, the evaluation was made according to the following criteria.
2 points: Fast foaming 1 point: The speed of foaming does not change 0 points: Slow foaming

The average value of the evaluation of the foaming speed of each paneler was obtained and evaluated according to the following criteria.
○: 1.5 points or more and 2 points or less ×: less than 1.5 points Table 1 shows the evaluation results.

Evaluation of the amount of foam 10 expert panelists put 1g of the prepared facial cleansing powder on the palm, add about 2 to 3mL of tap water, whisk about 20 seconds so that both hands are rubbed, and further add 3mL of tap water. The foaming operation was carried out firmly so as to entrain air. The total whipping time was 1 minute. The total amount of foam generated when foamed by the above method was evaluated visually.
The amount of foam of the face washing powder of Comparative Example 1 was used as a standard and evaluated according to the following criteria.
2 points: The amount of foam is large 1 point: The amount of foam does not change 0 point: The amount of foam is small

The average value of the evaluation of the amount of bubbles of each panel was obtained and evaluated according to the following criteria.
○: 1.5 points or more and 2 points or less ×: less than 1.5 points Table 1 shows the evaluation results.

Evaluation of slippery feeling after washing away 10 expert panelists evaluated the feeling of slippery feeling after washing away. The evaluation method is as follows.
Take 1 g of the prepared facial cleansing powder in the palm of your hand, add about 2 to 3 mL of tap water, whisk for about 20 seconds so that both hands are rubbed, and then whisk firmly so that air is involved in the foam while adding 3 mL of tap water . The total whipping time was 1 minute.
The foam was washed while rubbing both hands with running tap water, and after all the foam had flowed down, the feeling of the palm felt when the palm was rubbed wet was evaluated.
The smoothness feeling after washing the face washing powder of Comparative Example 1 was used as a standard, and the evaluation was made according to the following criteria.
2 points: Excellent smooth feeling 1 point: Smooth feeling does not change 0 points: Catch

The average value of the evaluation of the smooth feeling after each panel was washed off was determined and evaluated according to the following criteria.
○: 1.5 points or more and 2 points or less ×: less than 1.5 points Table 1 shows the evaluation results.

The face-washing powders of Examples 1 to 4 containing a wax having a melting point of 70 ° C. or higher, which is the present invention, are faster in foaming, the amount of foam, and a smooth feeling than the face-washing powder of Comparative Example 1 as a standard. Both were excellent.
The facial cleansing powders of Comparative Examples 2 and 4 in which stearic alcohol and behenic acid were blended instead of a wax having a melting point of 70 ° C. or higher had any of the speed of foaming, the amount of foam, and the feeling of smoothness as compared with Comparative Example 1 as a standard. Was also inferior. Moreover, although the amount of foam of the comparative example 3 which mix | blended stearic acid increased more than the comparative example 1, the speed of foaming and the smooth feeling were inferior.

Formulation Example 1 Face Wash Powder

Ingredient Amount (% by mass)
Sodium N-lauroyl glutamate 30
Rice bran 3
Behenyl alcohol 1
Lauramidopropylamine oxide 2
Poly gamma sodium glutamate 0.02
L-serine 0.02
Mannitol 30
Glucose 10
Branched glucan with cyclic structure 3
Polydextrose 3
Talc residue

Formulation Example 2 facial cleansing powder

Ingredient Amount (% by mass)
N-coconut oil fatty acid sodium acyl glutamate 30
Carnauba 8
Behenyl alcohol 2
Cocamidopropylamine oxide 2
Sodium N-lauroyl aspartate 5
Poly gamma sodium glutamate 4
L-serine 4
Mannitol 20
Glucose 10
Branched glucan with cyclic structure 1
Polydextrose 1
Talc residue

Formulation 3 facial cleansing powder

Ingredient Amount (% by mass)
Sodium N-lauroyl glutamate 10
Potassium N-myristoyl glutamate 18
Candelilla Row 1
Behenyl alcohol 2
Lauramidopropylamine oxide 2
Potassium myristate 2
Sodium polyγ-glutamate 0.3
L-serine 0.3
Coconut oil fatty acid ethyl ester sodium sulfonate 10
Mannitol 10
Maltitol 10
Cationized dextran-2 0.1
Agar powder 2
Dextrin powder 2
Hydroxypropyl starch phosphate 5
Talc residue

Claims (2)

  A powdery or granular skin cleanser comprising N-acylglutamate and a wax having a melting point of 70 ° C. or higher. The skin cleansing agent according to claim 1, wherein the N-acyl glutamate and the wax having a melting point of 70 ° C or higher are blended in a mass ratio of 100: 1 to 1: 1.