KR20000039190A - Transparent soap bar composition - Google Patents

Abstract

PURPOSE: A transparent soap bar composition is provided which is soft to the touch, has not incentive, has new physical property, and appearance differed from general soap. CONSTITUTION: A transparent soap bar composition for washing the human body is provided which has operated principal clean ingredient such as anion surfactant TEA-soap, potassium soap, sodium soap using a traditional oil and a fat blending, added transparency as a polysakaride, used a polar solvent being able to do adequate configuration between phases. The transparent soap bar composition comprises 0.5-10 parts by weight. of acylglutamate and optionally 0.01-2 parts by weight of sunscreens. Butyl methoxydibenzoylmethane and octyl methoxycynamate are used for sunscreens.

Description

Transparent soap composition for human cleansing

The present invention relates to a transparent soap composition for human cleansing, in which sodium soap, potassium soap, TEA-soap and anionic surfactants using a conventional mixed fat and oil function as main cleaning ingredients and polysaccharides. The present invention relates to a transparent soap composition for human cleansing that has a physical property and appearance different from that of a general soap, and has a soft feeling and no irritation by using a polar solvent to impart a transparent function and allow the two phases to have an appropriate arrangement.

In general, surfactants, including soaps, have a structural transition from monomers to micelles, micelles, lamellas, and neat phases depending on their concentration. In the case of the transparent formulation, the hydrophilic and lipophilic arrangement is uniformly formed at the concentration of the knit phase, and the polyol of the polysaccharide is arranged at the hydrophilic portion, thereby providing transparency between the layers, and the length of the nitrate layer array molecules is greater than the wavelength of visible light. In short it appears to be a visually clear formulation.

Although the structural theory of transparent soap has not been clearly clarified, X-ray diffraction analysis has confirmed that it is a microcrystal, and it is reported that clarifiers such as ethanol, glycerin, and sugar are involved as structural factors to form microcrystals. It has been reported by McBain that these crystals appear to be transparent because they are miniaturized below the wavelength of visible light.

As such, the arrangement of the surfactants due to the structural properties of the clearing has not been elucidated, and only the contribution of the clearing agent having a hydroxyl group is mentioned.

Thus far, as a representative invention of transparent soap, US Patent No. 2,820,768 uses sodium soap and triethanolamine soap as examples, and triethanolamine and glycerin are used as a clearing agent. The main base of soap is fatty acid such as Uji fatty acid, palm fatty acid, palm fatty acid, linseed oil fatty acid or neutral oil such as Uji, palm oil, palm oil, linseed oil, etc. It is known to form a transparent formulation by making and crystallizing.

A typical product brand is distributed as Neutrogena. It is excellent in use while swelling in water causes a great fall back in use. In addition, it contains 20-25% of triethanolamine and 15% of excess TEA-soap, which may lead to amination of triethanolamine after a certain period of time. It has a disadvantage. This type of product is known as Johnson & Johnson Transparent Soap and is known to be an unmature type that can be formulated in a short time.

Another method for preparing transparent soap is Japanese Patent Application Laid-Open No. 81-116800. In the case of the present invention, it is characterized by undergoing a aging process by a manufacturing method using an excess of hydroxy polyol in a general soap base based on fatty acids. Typically, the time required for the aging process is about 60-80 days, and the mixture of the polarizing agent, which facilitates the arrangement of the clearing agent and the soap structure, is matured in an excessive amount to make the proper soap of the cosmetic soap. As the clearing agent, sugar, glycerin, sorbitol, propylene glycol, or polyhydric polyols are used, and ethanol is used for the structural arrangement of the transparent phase, and the amount of ethanol used is known to be about 25%. However, since the volatile matter is usually 25-28% after manufacture, it is not possible to use it as a soft phenomenon immediately after manufacture, so that it can be commercialized at about 15% by drying in natural state. This invention is characterized by having the same hardness as general soap, excellent transparency and glossy surface. Usability is slightly less mild than the invention of US Patent No. 2,820,768, which is a phenomenon caused by the relatively low content of polyols.

The above two inventions are known to be representative in transparent soap formulations, and there are many other inventions that apply them. For example, U.S. Patent No. 3,969,259 uses antibacterial trichloroic acid (IGASAN DP-300) to highlight the deodorizing properties of simple antibacterial ingredients in the existing transparent soap manufacturing methods, and in the case of U.S. Patent No. 4,493,786 25-55%, anion, 10-40% of an amphoteric surfactant and 15-16% of polyhydric alcohols are used, but the above methods are invented by simply changing only a few compositions in the above-mentioned contents.

The present invention is to identify a mechanism having a characteristic that is different from the general soap in a formulation that satisfies the specific structure and various characteristics as a soap, sodium soap, potassium soap, TEA- soap and anionic surfactant using a conventional mixed oil and fat By using a polar solvent to act as a main cleaning ingredient, to give the polysaccharide a clearing function, and to have the proper arrangement of the two phases, it has a different physical property and appearance than the general soap, and it has a soft and comfortable feeling. For the purpose of providing it.

The present invention will be described in detail as follows.

Transparent soap composition for washing the human body according to the present invention is characterized in that it comprises 0.5 to 10 parts by weight of acyl glutamate. In addition, the present invention may additionally comprise 0.01 to 2 parts by weight of a sunscreen.

In the present invention, the acyl glutamate is monosodium cocoyl acylglutamate, monosodium lauroyl acylglutamate, monosodium myristoyl acylglutamate, monosodium stearoyl acylglutamate, monopotassium cocoyl acylglutamate, monopotassium lauroyl Acylglutamate, monopotassium myristoyl acylglutamate, monopotassium stearoyl acylglutamate, mono TEA cocoyl acylglutamate, mono TEA lauroyl acylglutamate, mono TEA myristoyl acylglutamate, mono TEA stearoyl acylglutamate, etc. This is used.

In the present invention, the sunscreen is butyl methoxydibenzoylmethane as the ultraviolet ray A blocker, and octyl methoxycinnamate is used as the ultraviolet ray B blocker.

The mechanism was modeled after the general phase of surfactants, and the structural properties of soaps capable of microcrystallization and the properties of anionic surfactants were demonstrated.

In general, potassium soap is formed into a knit phase when the concentration of the surfactant including soap is 45-55% in accordance with the basic principle that the phase changes when the concentration and temperature are changed in the aqueous phase. At this time, if the structural characteristics of the soap and the surfactant is properly used, a bilayer is formed and microcrystallization is performed in a spherical shape according to the type of the surfactant (hereinafter, including soap). In order to achieve spherical microcrystallization, the length of each monomer of the surfactant is constant and the hydrophilic head size is irregularly arranged so that it appears in the form of curved surface by van der Waals forces due to the interaction of the lipophilic group. Transparent images are formed inside and outside of the bilayer, so that visible light passes easily and the diameter of spherical microcrystals is about 40-50 nm, which is shorter than the wavelength of visible light, so that light is visible to the naked eye. Based on this mechanism, it is possible to invent transparent cosmetic soaps that do not require a long-term aging process and to form a harder formulation than US Pat. No. 2,820,768 in terms of hardness. By arranging the content of the surfactant can be increased and saturated fatty acids can be used to take advantage of the inherent properties of fatty acids. In addition, it can be produced in a shorter time than the invention of Japanese Patent Application Laid-Open No. 81-116800, and has a milder feeling than the formulation of the invention. It is possible to adjust the content of the polyol and thereby feel soft when used.

A feature of the present invention is a non-maturated transparent formulation prepared in a short time, the hardness is superior to the formulation of the US patent and the feeling of use is superior to the transparent soap of the Japanese patent.

The surfactant (including soap) used in the present invention is 1) the molecular weight or structure of the anionic surfactant is similar (including soap powder), 2) the hydrophilic head of the surfactant (including soap) is irregular, and 3) the surfactant ( Soap) must have good solubility in polar solvents and 4) have no structural irritation to the skin.

Surfactants that satisfy these conditions include sodium palmitate, sodium cocoate, sodium tallowate, potassium palmitate, potassium cocoate, potassium tallowate, disodium sulfosuccinate, acyl glutamate, sodium sulfate, TEA-palmiate , TEA-cocoate, TEA-tallowate, and the like, and as a transparent agent, glucose, lactose, glycerin, sorbitol, sugar, PEG series, PG, 1.3BG, etc., and polar solvents include ethanol, water, triethanolamine, etc. There is this.

In the formulation of the present invention, the TEA-soap contained a UV blocking agent to secure the stability of discoloration and block the ultraviolet rays A, B region.

The structure due to the detailed mechanism of the present invention has been described above, and the present invention has been completed by using a dispersant, a solvent, a discoloring agent, and the like. Based on this, examples of the transparent mechanism were first compared through Examples and Comparative Examples. This is to check the effect of transparency when the hydrophilic head is irregularly distributed.

<Test Example>

Transparent soap was formulated with the composition of Table 1 and then the transparency was compared. The results are shown in Table 2.

Ingredient Name Content (% by weight) Test Example 1 Test Example 2 Sodium palmitate 35.0 35.0 Sodium cocoate 6.0 6.0 Potassium Cocoate 5.0 5.0 TEA-Cocoate 6.0 6.0 Triethanolamine 10.0 10.0 ethanol 6.0 6.0 Party 10.0 10.0 glycerin 8.0 8.0 PEG 400 5.0 5.0 Sodium lauryl sulfate 3.0 - Acyl glutamate - 3.0 Distilled water 5.0 5.0 Incense and Other Additives 1.0 1.0

Transparency Results division 1/4 inch thickness 10 1/4 inch thickness 14 1/4 inch thickness 16 Test Example 1 I can't identify I can't identify Discernible Test Example 2 Discernible Discernible Discernible

It can be seen from the above test examples that the bilayers of microcrystals are formed differently by simply changing the surfactant having a large hydrophilic group by using acyl glutamate, which greatly affects the transparency. The structure of the two surfactants is as follows.

The hydrophilic group of the test example has a Y-shaped bulk shape, making it easier to form a spherical bilayer due to the interaction of the lipophilic group, thereby enabling fine particle formation, and thus, having a small diameter of the structure that determines transparency, transmits visible light. Is very easy.

From this it can be seen that the structural properties of the surfactant (including soap) is an important factor in determining the transparency of the transparent soap.

In addition, the present invention has made an important contribution to the transparent formulation by using ethanol (95%) as a polar solvent in order to facilitate the formation of the structural spherical bilayer. This is due to the greater solubility in soaps than water. In terms of usability, the functional characteristics of acyl glutamate give rise to a rich foam and are known to be a non-irritating surfactant, which is soft and rich foam and creamy feeling.

<Examples and Comparative Examples>

Compared with the present invention, the physical properties of the transparent soap having representativeness were compared.

<Comparative Example 1 (Example of Japanese Patent Laid-Open No. 81-116800)>

50 parts by weight of mixed fatty acid and 25 parts by weight of ethanol extracted from Uji and palm oil were added to a reaction tank, mixed and heated at 50 ° C. to 70 ° C., and 6.5 parts by weight of sodium hydroxide and 2 parts by weight of potassium hydroxide were dissolved in water, and then gradually added to neutralize. React. When the reaction was completed, 11 parts by weight of sugar, 16.5 parts by weight of water, 16 parts by weight of glycerin, and 1 part by weight of dissolution were added and dissolved in the mold, cooled, solidified, cut, aged and molded.

<Comparative Example 2 (US Patent No. 4,165,293)>

Prepared by mixing Uji and palm oil in a 7: 3 ratio of 50 parts by weight of sodium soap, 30 parts by weight of propylene glycol and 20 parts by weight of triethanolamine laurylsulfate, dissolve by heating and stirring to 80 ℃, poured into a mold, cooled and solidified It was.

<Comparative Example 3 (US Patent No. 2,820,768)-Neutrogena (commercialized product)>

Uji, palm oil, castor oil, castor oil, sodium hydroxide, triethanolamine, glycerin, distilled water, cocoamido DEA, TEA-laurylsulfate, acetyl acetate, preservatives and flavors were used as raw materials.

<Examples 1-4>

Transparent soap was prepared according to the composition of Table 3.

Ingredient Name Content (% by weight) Example 1 Example 2 Example 3 Example 4 Sodium palmitate 36.0 36.0 36.0 36.0 Sodium cocoate 7.0 7.0 7.0 7.0 Potassium Cocoate 5.0 5.0 5.0 5.0 TEA-Cocoate 3.0 3.0 3.0 3.0 Triethanolamine 13.0 13.0 13.0 13.0 ethanol 5.0 5.0 5.0 5.0 Party 8.0 8.0 8.0 8.0 glycerin 8.0 8.0 8.0 8.0 PEG 400 4.0 4.0 4.0 4.0 Disodium laurylsulfosuccinate 2.0 2.0 2.0 2.0 Sodium lauryl sulfate 2.0 2.0 2.0 2.0 Acyl glutamate - 3.0 0.5 5.0 Distilled water 5.0 5.0 7.5 3.0 Sunscreen A Area - 0.02 0.01 0.5 Sunscreen B Area - 0.02 0.01 0.5 Incense and Other Additives 2.0 1.96 1.98 1.0

The quality of the transparent soaps prepared by Comparative Examples 1 to 3 and Examples 1 to 4 was evaluated as follows. Evaluation items were evaluated for six items including transparency, swelling degree, work process duration, foaming power, skin irritation, and discoloration stability.

1. Transparency Evaluation

Methods: The transparency was cut by 1/4 inch thickness and the transparency was evaluated by the following criteria (readability was defined as transparent soap). (Soap Technology For The 1990, S 234p. Reference)

Evaluation: 5 points (readable letters), 4 points (some letters can be read), 3 points (check the type of the character), 2 points (check the black character), 1 point (opaque state)

division Comparative Example 1 Comparative Example 2 Comparative Example 3 Example 1 Example 2 Example 3 Example 4 score 5 5 5 4 5 3 5

2. Swelling degree evaluation

To evaluate the degree of swelling by absorbing moisture in the water phase, and comparing the softness when used.

Method: After cutting 100g (80mm * 50mm * 25mm) weight and immersing in 25 ℃ aqueous solution for 4 hours, the weight ratio swelled in water was converted into a percentage and evaluated by the following criteria.

Evaluation: 5 points (less than 13%), 4 points (13.00% -15.00%), 3 points (15.00-18.00%), 2 points (18.00% -21.00%), 1 point (over 21%)

division Comparative Example 1 Comparative Example 2 Comparative Example 3 Example 1 Example 2 Example 3 Example 4 score 5 One One 2 3 2 2

3. Work process period

Evaluation of the manufacturing process period is an evaluation of the economics of commercialization.

Evaluation: 5 points (within 24 hours), 4 points (2 days-4 days), 3 points (4 days-7 days), 2 points (1 week-2 weeks), 1 point (2 weeks or more)

division Comparative Example 1 Comparative Example 2 Comparative Example 3 Example 1 Example 2 Example 3 Example 4 score One 4 5 4 5 5 5

4. Bubble force measurement

Bubble force measures bubble height through dynamic foam test (3000 rpm at 0.5% concentration)

Standard: 70/30 (palm / palm) mixed fatty acid sodium soap as standard

Evaluation: 5 points (1,200mm or more), 4 points (1,100-1,200mm), 3 points (1,000-1,100mm), 2 points (900-1,000mm), 1 point (900mm or less)

division Comparative Example 1 Comparative Example 2 Comparative Example 3 Example 1 Example 2 Example 3 Example 4 score 4 3 4 4 5 4 5

5. Skin irritation test

0.5% aqueous solution was added to the 18mm Hilltop Champer and 150μl of the sample was fixed on the forearm using 3M micro tape. Six days after day 3, erythema, scaling, and skin fissures were evaluated.

Evaluation Items and Criteria

Evaluation item Criteria Erythema 1+ Slightly redness, spotty or diffuse 2+ Medium, uniform redness 3+ Intense redness 4+ Fiery red with edema Scales 1+ Fine 2+ Moderate 3+ Severe with large flakes Skin cracks 1+ Fine cracks 2+ Single or multiple broader fissures 3+ Wide cracks with hemorrhages or exudation

Evaluation: 5 points (Rank 1.5 or less), 4 points (3.0 or less), 3 points (5.0 or less), 2 points (7.0 or less), 1 point (7.0 or less)

division Comparative Example 1 Comparative Example 2 Comparative Example 3 Example 1 Example 2 Example 3 Example 4 score 3 4 5 5 5 4 5

6. Evaluation of discoloration stability (ultraviolet stability)

The UV region has two wavelengths, A and B. The A region is 320-400nm, and the B region is 290-320nm. Sunscreens with a function of blocking this were introduced to prevent daylight discoloration.

Experimental method evaluated the discoloration degree by experiment for 8 weeks in daylight.

division Comparative Example 1 Comparative Example 2 Comparative Example 3 Example 1 Example 2 Example 3 Example 4 score 3 4 5 5 5 4 5

The comprehensive physical property evaluation results of the six main items of the present invention are as follows.

division transparency Swelling degree Process period Bubble Skin irritation stability Comprehensive Evaluation Comparative Example 1 5 5 One 4 3 5 23 Comparative Example 2 5 One 4 3 4 2 19 Comparative Example 3 5 One 5 4 5 2 22 Example 1 4 2 4 4 5 2 21 Example 2 5 3 5 5 5 5 28 Example 3 3 2 5 4 4 3 21 Example 4 5 2 5 5 5 5 27

As a result of comparing and evaluating the product capability of the present invention and the physical properties of the representative inventions of the transparent soap, the superiority of the present invention was proved and was invented through the theoretical identification of the transparent formulation. In addition, it proved superior to conventional commercial formulations and elucidated a clear structural theory of the structure of microcrystals.

Claims (4)

A transparent soap composition for human cleansing, comprising: 0.5 to 10 parts by weight of acyl glutamate. The transparent soap composition of claim 1, further comprising 0.01 to 2 parts by weight of a sunscreen. The acylglutamate of claim 1 or 2, wherein the acylglutamate is monosodium cocoyl acylglutamate, monosodium lauroyl acylglutamate, monosodium myristoyl acylglutamate, monosodium stearoyl acylglutamate, monopotassium cocoyl acylglutamate , Monopotassium lauroyl acylglutamate, monopotassium myristoyl acylglutamate, monopotassium stearoyl acylglutamate, mono TEA cocoyl acylglutamate, mono TEA lauroyl acylglutamate, mono TEA myristoyl acylglutamate, and mono TEA stearoyl acyl glutamate transparent soap composition for human cleaning, characterized in that selected from. The method of claim 2, wherein the sunscreen is a butyl methoxydibenzoylmethane is used as a UV A region blocker, octyl methoxycinnamate is used as a UV B region blocker, the transparent soap composition for human body washing.