KR0163512B1 - Cleansing composition of transparent gel phase - Google Patents

Abstract

In the present invention, 1.0 to 10.0% by weight of one or two or more nonionic surfactants having 10 to 50 moles of ethylene oxide added thereto and 1.0 to 10.0% by weight of an ester bond to a cleaning agent obtained by saponifying 15 to 35% by weight of a higher fatty acid. The present invention relates to a transparent gel-type skin cleanser composition which is made by blending a weight% and a thickener 0.10 to 0.50% by weight, which is not only beautiful in appearance but also excellent in terms of usability, skin irritation and stability, and which is easy to use.

Description

Transparent Gel Skin Cleanser Composition

The present invention relates to a transparent gel-like skin cleanser composition, and more particularly to an appropriate amount of higher fatty acid soaps, oils and titrations having one or two or more nonionic surfactants added with 10 to 50 moles of ethylene oxide and an ester bond. The present invention relates to a skin-cleaning composition of a transparent gel type, which is made by blending a thickening agent in an amount, which is not only excellent in appearance but also excellent in use, skin irritation and stability, and which is easy to use.

In general, the skin cleanser is a kind of soap used on the face, neck or whole body to clean the human body, which is classified into a solid, liquid, and semi-solid (paste) in appearance. Recently, as the technology is developed, many various types of skin cleaners are commercially available, and among them, a transparent gel cleaner has attracted more attention due to its unique high-quality image, ease of use, and beautiful appearance.

However, the clear gel skin cleanser is difficult to complete the formulation due to various constraints. That is, the cleaning agent should be basically excellent in foaming power, cleansing power, rinsing properties and the condition of the skin during and after use, it is not easy to maintain a clear formulation while satisfying all these conditions. And a considerable technical skill is required to make a gel phase which is convenient to use. In order to overcome these difficulties and invent a transparent gel-like cleaner, many inventors have approached in various ways. In Japanese Patent Laid-Open No. 4-120012, an anionic surfactant and a polyhydric alcohol are formulated to form a transparent cleanser, but a gel is formed. In the case of Japanese Patent Application Laid-Open No. 63-57699, a transparent gel detergent having a liquid crystal structure was prepared by mixing fatty acid soap, water, and polyalcohol, but the functionality of the cleaner was not good. In particular, the gel phase is dissolved at a temperature of more than 30 ℃ there was a problem in stability and usability. In addition, Japanese Patent Laid-Open Publication No. 53-41309 and US Pat. No. 4,75,218 make soaps with higher fatty acids that are less irritating to human skin, and use high-fat fatty alcohols to make transparent cleaners and montmorillonite series for gel formation and stability. Inorganic powders and inorganic thickeners were used, but they were not easy to use. In Japanese Patent Laid-Open No. 2-180011, a transparent gel detergent was prepared by combining an anionic surfactant of N-acyl glutamate derivative and fatty acid alkanolamide, and US Pat. Although detergents were made, these detergents had problems in functionality, long-term storage stability and skin irritation. On the other hand, U.S. Patent No. 5030374 made a transparent gel-like detergent with a neutral pH while minimizing skin irritation, but also had disadvantages such as poor foaming power and cleaning power and slippery when used.

Accordingly, the present inventors have intensively researched to solve these problems, and as a result, oil having an ester bond with one or two or more kinds of nonionic surfactants in which 10 to 50 moles of ethylene oxide is added to an appropriate amount of higher fatty acid soaps and increased The present invention has been completed by finding out that it is possible to prepare a transparent gel-like detergent having a beautiful appearance, excellent use, skin irritation, stability, and ease of use when formulated in an appropriate amount.

Hereinafter, the present invention will be described in detail.

The transparent gel-like skin cleanser composition of the present invention comprises a neutralizer prepared by mixing 15 to 35% by weight of a higher fatty acid having 8 to 22 carbon atoms with an alkali neutralizing agent, namely, one or two or more of potassium hydroxide, sodium hydroxide and triethanolamine; Nonionic surfactants having 10 to 50 moles of ethylene oxide, that is, nonylphenyl ether (EO12), oleyl ether (EO15), octyldodecyl ether (EO16), sorbitan monolaurate (EO20), 1.0-10 weight% of 1 type, or 2 or more types from sorbitan monostearate (EO20), octyldodecyl ether (EO25), and hardened castor oil (EO40); 0.1 to 0.5% by weight of one or two or more of water-soluble polymer thickeners such as carboxyvinyl polymer, hydroxyethyl cellulose, and carboxymethyl cellulose for stabilization and gel formation; Oils with ester bonds, ie, octyldodecyl myristate, isononylisononanoate, glyceryl trioctanoate, isopropyl myristate, caprylic capric triglyceride, isocetyl for good gel formation preservation and usability 1.0-10% by weight of at least one kind of myristate is added, and a moisturizer, an additive, water, and the like, which are usually used in a cleaning agent, are compounded together.

In the present invention, the content of the higher fatty acid is preferably 15 to 35% by weight, because the 15% by weight or less is a property of the cleaning power, foaming power, etc., which is a function of the cleaning agent is difficult to prepare a transparent gel. In addition, the function of the cleaning agent is excellent at 35% by weight or more, but it is not preferable because it is difficult to prepare a transparent gel and poor in long-term storage stability, thus causing fatty acid precipitation.

In addition, as shown in the examples below, the gel phase is not formed when the content of the nonionic surfactant added with 10 to 50 moles of ethylene oxide is 1.0 wt% or less, and the hardness of the formulation is too high at 10.0 wt% or more, which makes manufacturing difficulties. And skin irritation is not a problem.

In the case of the oil having an ester bond, the gel phase is hardly formed in the action of the nonionic surfactant at 1.0 wt% or less, and the oil lacking the function of imparting a soft texture to the skin after use of the cleaning agent. On the other hand, it is difficult to obtain a transparent gel phase at more than 10% by weight, and it is not preferable in terms of skin safety because the content of the nonionic surfactant must be increased.

In addition, the thickening agent used for stabilization and gel formation does not have a great thickening effect at 0.1% by weight or less, and at 0.5% by weight or more, gel formation is not preferable because of its good lipiness or slipperiness in use.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples.

EXAMPLES 1-4

Next, according to the composition ratio of Table 1, the water raw materials 1 to 4 and the oil raw materials 6 to 10 were heated to 70 ° C., respectively, and stirred for 2 minutes at a speed of 20 rpm in a paddle mixer and 1000 rpm in a homo mixer while gradually adding an oil phase to the aqueous phase. Subsequently, the appropriately dispersed raw material 5 was added and stirred for 5 minutes at a speed of 20 rpm in a paddle mixer and 2000 rpm in a homo mixer. After cooling, the additive raw material 11 was added at 50 ° C., stirred for 2 minutes at a speed of 20 rpm in a paddle mixer, and cooled to 30 ° C. again to prepare a clear gel-like cleaner.

Comparative Examples 1 to 10

Next, the cleaning agent of Comparative Example was prepared according to the composition ratio of Table 2 and Table 3. In Comparative Examples 1 to 8, the aqueous raw materials 1 to 6 and the oily raw materials 8 to 12 were heated to 70 ° C., respectively, and stirred for 2 minutes at a speed of 20 rpm in a paddle mixer and 1000 rpm in a homo mixer while gradually adding an oil phase to the aqueous phase. Subsequently, the appropriately dispersed raw material 7 was added and stirred for 5 minutes at a speed of 20 rpm in a paddle mixer and 2000 rpm in a homo mixer. After cooling, the additive raw material 16 was added at 50 ° C., stirred for 2 minutes at a speed of 20 rpm in a paddle mixer, and cooled to 30 ° C. again to prepare a transparent gel detergent.

In Comparative Examples 9 to 10, water phases 1 to 6 and 8 to 15 oils were heated to 70 ° C., respectively, and the oil phase was gradually added thereto, and stirred for 5 minutes at a speed of 20 rpm in a paddle mixer and 1000 rpm in a homo mixer. After cooling to ℃ ℃ was added to the additive raw material 16, the mixture was mixed for 20 minutes at 20 rpm in a paddle mixer, and then cooled to 30 ℃ again to complete the production.

In order to measure the effects of the examples and comparative examples, the following test was carried out.

[Functional evaluation]

For the above examples and comparative examples, items such as foaming force, detergency, post-use feeling, usability (convenience) and the like were evaluated.

The foaming power was compared using the Rose-Miles method, which is a general method of evaluating the foaming power. The cleaning power was evaluated for the removal of contaminants, and rinsability was tested by the following method.

Rinsing Test

The rinsing property was related to the unwindability (dissolvability) of the sample. Thus, 5 parts by weight of the sample was added to 100 parts by weight of purified water and evaluated by the time taken for dissolving at a speed of 300 rpm in a disper mixer.

Rinse ◎: 1-20 seconds (very good) ○: 21-40 seconds (good)

△: 41 to 60 seconds (normal) ×: 61 seconds or more (bad)

[Ease of Use Evaluation (Sensory Evaluation)]

The usability evaluation was performed after 20 days of use in consideration of the convenience of use according to the viscosity of the formulation and the freshness and slippage of the skin texture after use.

[Stability Test]

In order to evaluate the stability of the transparent gel-like detergent composition, the samples prepared in Examples and Comparatives were stored in a 0 ° C., 50 ° C. thermostat and room temperature, and a cycle thermostat circulating 0 ° C., 25 ° C., 50 ° C. at 8 hour cycles. Stability until weeks, 2 weeks, 1 month, 3 months, and 1 year was evaluated and the results are shown in Table 6.

[Skin Primary Irritation Test]

Each of the cleaning agents of Examples and Comparative Examples was diluted to 1.0 parts by weight in purified water, buried in a patch test pin chamber, fixed with a tape for 48 hours in the lower half of 20 healthy women, and the pin chamber was removed and the result was read after 4 hours. It was. The judgment was made according to the visual judgment reference table in Table 7 below, and the stimulus degree was calculated by the formula shown below. The results are shown in Table 8.

Referring to Table 9 below, it was observed that severe skin irritation was observed when high fatty acids, surfactants and oils were added in excess.

Claims (5)

1.0 to 10.0% by weight of a nonionic surfactant having 10 to 50 moles of ethylene oxide added and 0.1 to 0.5% by weight of a water-soluble polymer thickener to a cleaning agent in which 15 to 35% by weight of a higher fatty acid having 8 to 22 carbon atoms is saponified with an alkali neutralizer. And 1.0-10.0% by weight of an oil having an ester bond. The transparent gel-like skin cleanser composition according to claim 1, wherein the alkali neutralizing agent is one or two or more selected from sodium hydroxide, potassium hydroxide and triethanolamine. The nonionic surfactant having 10 to 50 moles of ethylene oxide added thereto is nonylphenyl ether (EO12), oleyl ether (EO15), octyldodecyl ether (EO16), sorbitan monolaurate. (EO20), sorbitan monostearate (EO20), octyldodecyl ether (EO25), or one or two or more selected from cured castor oil (EO40). The transparent gel-like skin cleanser composition according to claim 1, wherein the water-soluble polymer thickener is one or two or more selected from carboxyvinyl polymer, hydroxyethyl cellulose and carboxymethyl cellulose. The oil having an ester bond is selected from octyldodecyl myristate, isononyl isononanoate, glyceryl trioctanoate, isopropyl myristate, caprylic capric triglyceride and isocetyl myristate. Transparent gel-like skin cleanser composition, characterized in that one or two or more.