KR100998050B1 - Toilet soap composition - Google Patents

Abstract

The present invention relates to a cosmetic soap composition. In particular, the present invention provides a cosmetic soap composition which is easy to work, and has excellent usability and skin moisturizing ability by containing a copolymer of acrylic acid and sodium acrylate, a silicone-based polymer and an amphoteric surfactant in an alkali metal soap.

Cosmetic soap, silicone polymer, amphoteric surfactant

Description

Cosmetic soap composition {TOILET SOAP COMPOSITION}

[TECHNICAL FIELD OF THE INVENTION]

The present invention relates to a cosmetic soap composition, and more particularly, to a cosmetic soap composition which is easy to work with and has excellent usability and skin moisturizing ability.

[Private Technology]

Soap is a fatty acid obtained by decomposing fats and oils with an alkali, which is mainly used for washing the human body. However, soaps have strong alkalinity in aqueous solutions. When used frequently, soap removes excessive sebum components of the skin and softens the stratum corneum, causing skin irritation. Sometimes.

In order to solve skin irritation and skin drying problems caused by the use of alkaline makeup soaps, various additives are used to add various surfactants to alleviate the alkalinity of makeup soaps and to supply moisture and oil to the skin. For example, there is a combi bar containing 10 to 20% of anionic surfactant such as sodium cocoyl isethionate in a cosmetic soap base, and a fatty acid, natural oil, mineral oil, etc., as an overfat agent that supplies oil. There is a method of adding the oil component and oil-soluble plant extracts of the oil to impart a function of improving the feeling of use of the soap and relieving skin dryness. There is also a method of imparting skin moisturizing power using glycerin, sorbitol, amino acids and vegetable extracts as water-soluble moisturizers. However, the oil-based moisturizer of the existing moisturizers, there is a disadvantage in that the use of a large amount when the feeling of use and the moisturizing power is limited and the stability decreases with time. Water-soluble moisturizers have a temporary limitation on the moisturizing effect of the nature of the cleaning product, there is a disadvantage that it is difficult to expect sustained efficacy.

In order to overcome the disadvantages of oil-based moisturizers and water-soluble moisturizers, World Patent WO97 / 049793 discloses a method of using about 0.5 to 5% by weight of silicone, glycerin, sorbitol alone or mixed with fatty acids-based soap and using oils of 5% by weight or less. Korean Patent Laid-Open Publication No. 1996-0016788 discloses a method of imparting a moisturizing effect by using 15 to 35% by weight of anionic surfactant and 0.1 to 5% by weight of glycine betaine to a fatty acid soap. However, the above method has a disadvantage in that the physical properties of the soap are significantly lowered due to the excessive use of the water-based additive and the anionic surfactant, and the skin protection effect and workability are lowered.

Therefore, an object of the present invention is to provide a cosmetic soap composition having improved workability, usability and moisturizing effect.

In order to achieve the above object, the present invention is 50 to 87% by weight of alkali metal soap, 6 to 15% by weight of water, 0.1 to 10% by weight of the copolymer of acrylic acid and sodium acrylate, 0.1 to 5.0% by weight It provides a cosmetic soap composition comprising a silicone-based polymer and 0.1 to 10% by weight of amphoteric surfactant.

Hereinafter, the present invention will be described in detail.

The inventors of the present invention, while studying the solution to the skin dryness and skin irritation, which is a disadvantage of the makeup soap, the copolymers of acrylic acid and sodium acrylate, silicone-based poly- and amphoteric surfactants in the commonly used makeup soap base It was confirmed that by containing it can significantly improve the moisturizing power, feeling and skin irritation, and completed the present invention based on this.

The present invention relates to cosmetic soap compositions comprising alkali metal soaps, copolymers of acrylic acid and sodium acrylate, silicone-based poly- and amphoteric surfactants.

Alkali metal soaps are potassium salts or sodium salts of fatty acids having 8 to 20 carbon atoms. The alkali metal soap may be included in the makeup soap composition in an amount of 50 to 87 wt%, and 6 to 15 wt% of moisture may be used as a binder. If the content of the alkali metal soap is less than 50% by weight soap is too hard to work, and if it exceeds 87% by weight it is difficult to expect the emollient effect.

Copolymers of acrylic acid and sodium acrylate may be included in the cosmetic soap composition in an amount of 0.1 to 10% by weight. If the content thereof is less than 0.1% by weight, the moisturizing power may be inadequate, and when it exceeds 10% by weight, workability and physical properties may be reduced.

The silicone-based polymer may be included in the cosmetic soap composition in an amount of 0.1 to 5% by weight, and if the content thereof is less than 0.1% by weight, the moisturizing effect may be insignificant. When casting, the work is not easy and the physical properties may be reduced. Representative silicone-based polymers include, but are not limited to, polydimethylsiloxane and phenyltrimethicone having a molecular weight of 800 to 260,000. Silicone type polymer can be used 1 or more types.

Amphoteric surfactants may be included in the cosmetic soap composition in an amount of 0.1 to 10% by weight. If the content thereof is less than 0.1% by weight, the bubble and the feeling of use may not be good, and when the content exceeds 10% by weight, the physical properties of the soap may be degraded and cracking may occur. Amphoteric surfactants include, but are not limited to, betaines, alkylglycinates and alkylaminopropionates. Amphoteric surfactant can use 1 or more types.

The cosmetic soap composition according to the present invention has excellent moisturizing power, less skin irritation, and excellent workability and stability during long-term storage.

In addition, the cosmetic soap composition of the present invention may further comprise a component, such as fragrances, dyes, oxidative stabilizers, plasticizers, binders or water usually used in the cosmetic soap in the remaining amount.

Hereinafter, examples of the present invention will be described. The following examples are only for illustrating the present invention, but the protection scope of the present invention is not limited to the following examples.

Examples 1-5 and Comparative Examples 1-3

The composition (unit: wt%) of Table 1 was uniformly mixed using a mixer and a roll mill, and then molded in a cosmetic soap manufacturing apparatus, and molded to form a cosmetic soap.

division Example Comparative example One 2 3 4 5 One 2 3 Soap (12% moisture) 88.3 93.3 83.4 83.4 88.3 93.5 83.5 83.5 Acrylic Acid and Sodium Acrylate Copolymer 10.0 0.1 10.0 0.1 0.1 - 15.0 - Cocamidopropyl Bane 0.1 0.1 0.1 10.0 10.0 - - 15.0 Polydimethylsiloxane (200F, 30000cs) 0.1 5.0 5.0 5.0 0.1 - - - Palm kernel oil fatty acid - - - - - 5.0 - - Spices 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5

In order to measure the workability, usability, and moisturizing power of the cosmetic soaps of Examples 1 to 5 and Comparative Examples 1 to 3, the following evaluation was performed.

Experimental Example 1: evaluation of workability (molding and mold)

Molding workability was transferred to a molding machine and a screw when the soap was manufactured by a general fatty acid cosmetic soap manufacturing apparatus, and moldability workability was measured according to the following criteria to the extent that the soap does not adhere to the mold.

<Evaluation Criteria>

  Good: Good molding or moldability.

  Medium: Molding or mold workability is normal

  Poor: poor molding or moldability

Experimental Example 2: Evaluation

Usability was tested in 20 healthy adult women aged 19 to 34 years (mean age 24). After using the cosmetic soap under the same conditions, the feeling was evaluated on a five-point scale of the following evaluation criteria and the average was calculated.

<Evaluation Criteria>

5 points: Very good feeling during and after use

4 points: Excellent feeling during and after use

3 points | pieces: Normal feeling after use and after use

2 points: Bad feeling during and after use

1 point: Very bad feeling during and after use

Experimental Example 3: Evaluation of Moisturizing Power

Skin moisture retention was measured in 20 healthy females aged 19 to 34 years (mean age: 24 years).

The soap was diluted with distilled water to make a 5% aqueous solution. 5 ml of this aqueous solution was taken and rubbed a 5 cm x 5 cm area by hand for 60 seconds on the inside of the arm, waited for 30 seconds, and washed with running water for 10 seconds. Washing was repeated twice a day for 3 hours every 3 days, and the water retention was measured on the last day and compared with the water retention before using soap. Skicon-200 (IBS CO., Japan) was used as a measurement device for water retention, and the test subject was allowed to stabilize for 20 minutes in a constant temperature and humidity room (23 ° C, 50% relative humidity), and then measured five times for each site. The determination was made as the average of the remaining values, excluding the measurement and the highest measurement. Skin moisture retention was calculated according to Equation 1 below, which means that the higher the value, the better moisturizing power.

(Equation 1)

Skin moisture retention (%) = skin moisture retention after 5 days / skin moisture retention before use X 100

Workability, usability and moisturizing power measured in the above experiments are shown in Table 2 below.

division Example Comparative example One 2 3 4 5 One 2 3 Workability Good Good Good Good Good Good usually Bad Feeling 4 points 4 points 5 points 4 points 4 points 2 points 4 points 4 points Moisturizing Moisture retention (initial) 68.5 69.3 69.0 70.2 67.5 70.4 67.2 66.9 Moisture retention (after 5 days) 45.7 44.8 50.5 50.5 42.5 37.1 46.4 44.3 Moisture retention rate (%) 66.7 64.7 73.2 71.9 63.0 52.7 67.0 66.2

In Table 2, the cosmetic soap of Examples 1 to 5 was excellent in workability and usability, it was confirmed that the skin moisturizing effect. On the other hand, the cosmetic soaps of Comparative Examples 1 to 3 which did not contain at least one copolymer of acrylic acid and sodium acrylate, a silicone-based polymer or an amphoteric surfactant were measured to have a slightly low workability, usability or moisturizing power.

As mentioned above, the cosmetic soap composition of the present invention is easy to work by using a copolymer of an acrylic acid and a sodium acrylate, a silicone-based polymer and an amphoteric surfactant in a soap, so that the feeling of use and skin moisturizing ability are improved. great.

Claims (4)

50 to 87 weight percent alkali metal soap, 6 to 15 weight percent moisture, 0.1 to 10 weight percent acrylic acid and sodium acrylate copolymer, 0.1 to 5.0 weight percent silicone-based polymer and 0.1 to 10 weight percent both Cosmetic soap composition comprising a surfactant. The composition of claim 1, wherein the alkali metal soap is a potassium salt or a sodium salt of a fatty acid having 8 to 20 carbon atoms. The composition of claim 1, wherein the silicone-based polymer is selected from the group consisting of polydimethyl siloxanes having a molecular weight of 800 to 260,000, phenyltrimethicone, and mixtures thereof. The composition of claim 1, wherein the amphoteric surfactant is selected from the group consisting of betaine, alkyl glycinate, alkylaminopropionate, and mixtures thereof.