KR100564222B1 - Composite soap composition - Google Patents

Abstract

The present invention relates to a complex soap composition, the soap composition comprises a fatty acid-based cosmetic soap and 2 to 35% by weight of monoglyceride sulfonate of the formula (1).

[Formula 1]

(Wherein R is alkyl having 7 to 21 carbon atoms and M is sodium, potassium, triethanol amine or ammonia)

This composite soap composition is excellent in general physical properties such as soap's softness, and excellent in moisturizing power and usability due to repeated use.

Description

Composite soap composition

[Industrial use]

The present invention relates to a composite soap composition, and more particularly to a composite soap composition excellent in the moisturizing power and feel of the soap.

[Prior art]

In general, cosmetic soaps are obtained by saponifying fatty acids obtained by decomposing fats or oils with potassium hydroxide, sodium hydroxide, and the like, which are used for washing the human body.

Since this cosmetic soap shows strong alkalinity in aqueous solution, it often causes excessive skin sebum removal and softens the stratum corneum, causing skin irritation. In other words, repeated use of alkaline makeup soap for a long time causes the skin to dry and lose elasticity, causing the skin to become rough easily. In order to solve the problem of skin dryness and roughness caused by the use of the alkaline cosmetic soap, various additives for supplying moisture and oil to the skin of the cosmetic soap composition have been used. Attempts have been made to mitigate skin dryness by adding cosmetic ingredients such as, for example, hyperlipides, humectants and plant extracts to soaps.

Moisturizers used in cosmetic soaps keep moisture on the surface layer of the skin and prevent moisture loss from the skin, forming a skin barrier to reduce moisture loss. Commonly used moisturizers include glycerin, sorbitol, and natural oils for skin.They form a film on the uneven surface of the dried skin due to frequent use of alkaline soaps to form a skin protective layer to reduce moisture evaporation to reduce skin dryness. Let's do it.

However, these conventional moisturizers do not have the function of adsorbing external moisture to the skin and only have a function as a temporary protective film, so they are easily detached from the skin surface due to physical effects, so the effect cannot be expected for a long time. Increasing the amount of water may cause the soap to be easily hydrated and receded. That is, in most cases, these moisturizers are temporary and do not affect the physiological function of the skin, and have undesirable effects on the properties of the soap.

In order to compensate for these problems, there has been a growing interest in formulations containing surfactants with low irritation to skin and excellent moisturizing effects in general fatty acid soaps.

For example, US Pat. No. 5,683,683 describes a method of mixing anionic, nonionic and amphoteric surfactants to improve the moisturizing and feeling of liquid body cleansers. The use of the above-mentioned mixed surfactants in the combination bar (combination bar) can give a moisturizing effect to the skin by acting to suppress the drying of the skin by synergistic properties of each surfactant, but such a mixture Excessive use of nonionic and amphoteric surfactants in the surfactants has a problem of discoloration and deterioration in the long-term storage.

In addition, U.S. Patent No. 4,695,395 discloses acyl isethionate, an anionic surfactant, in a complex soap to impart skin protection. Acyl isethionate has a lower liquidity and higher hydrophilicity than general fatty acid soaps, has low skin irritation, excellent moisturizing power and ease of use, but has a disadvantage in that physical properties of soap are lowered by easily absorbing water with high solubility.

The present invention is to solve the above problems, an object of the present invention is to provide a complex soap composition having improved soap softness and excellent moisturizing power and feeling.

Another object of the present invention is to provide a complex soap composition having low skin irritation.

[Means for solving the problem]

In order to achieve the above object, the present invention provides a complex cosmetic soap composition comprising a fatty acid-based cosmetic soap and 2 to 35% by weight of the monoglyceride sulfonate of the formula (1).

[Formula 1]

(Wherein R is alkyl having 7 to 21 carbon atoms and M is sodium, potassium, triethanol amine or ammonia).

Hereinafter, the present invention will be described in more detail.

The composite soap composition of the present invention comprises a general fatty acid soap as the main cleaning base, and contains 2 to 35% by weight, preferably 5 to 20% by weight of the monoglyceride sulfonate of the formula (1) as the auxiliary cleaning base.

Monoglyceride sulfonate used in the present invention has the formula (1). Representative examples of the monoglyceride sulfonate having the formula (1) include sodium cocomoglyceride sulfonate, sodium tallowyl monoglyceride sulfonate, sodium cocoyl monoglyceride sulfonate, and the like. Can be used.

[Formula 1]

Wherein R is alkyl having 7 to 21 carbon atoms and M is sodium, potassium, triethanol amine or ammonia. RCO having R is solely derived from animal oil of tallow or lard and vegetable oil of palm oil, palm oil or palm kernel oil. Or from mixed fatty acids.)

The monoglyceride sulfonate used in the present invention was used as prepared by the following method, but is not limited to the following method.

The monoglyceride sulfonate used in the present invention was prepared by preparing an intermediate sodium chlorohydroxy sulfonate salt using epichlorohydrin and sodium sulfite as a reducing agent, followed by a substitution esterification reaction using an alkali salt of a higher fatty acid. To prepare. The higher fatty acid may be used alone or in combination of fatty acids derived from animal oil of tallow or lard and vegetable oil of palm oil, palm oil or palm kernel oil.

The monoglyceride sulfonate thus prepared has an ester group in the molecule and thus has low skin irritation to the human body and a lower melting point than a general fatty acid soap, but other surfactants are affected by the hydrogen bonding between the negative charge of the hydroxy group and the sulfonate. Rather, it has high melting point and low solubility, so it has good physical properties to the water, and the hydroxyl group of the hydrophilic part strengthens the binding force with water molecules, so it maintains excellent moisture retention on the skin even when the soap is used initially or repeatedly It is assumed to represent a property that gives.

In the complex soap composition of the present invention, when 2 to 35% by weight, preferably 5 to 20% by weight of monoglyceride sulfonate is used as an auxiliary cleaning base, soap softness of the soap is improved by the above characteristics, The composite soap composition excellent in usability can be manufactured. When the amount of the complex soap composition is less than 2% by weight, the soap's softness is good but the quality of moisture and feeling is low, and when the amount is used in an amount of more than 35% by weight, the moisture and power are excellent but it is softness as a cosmetic soap. Is lowered.

In addition, the general fatty acid cosmetic soap to be used in the present invention may be used alone or mixed with fatty acids obtained from animal fats and oils such as tallow and lard, and vegetable oils such as palm oil, palm kernel oil, palm oil, palm stearin, sodium hydroxide, potassium hydroxide and triethanolamine. Neutralized can be used. Representative examples of general fatty acid cosmetic soaps include sodium tallow oil soap, coco soap, and the like, and these may be used alone or in combination of two or more thereof.

Other complex soap compositions of the present invention include alkyl sulfates such as acyl isethionate, sodium laurate sulfate, sodium lauryl sulfate, which are surfactants commonly used in the composite cosmetic soap, within the scope of not impairing the effects of the present invention, Salts such as alkyl sulfosuccinates, alkyl glyceryl ether sulfonates, acyl sacosinates, acyl taurates and alkyl sulfoacetates and alkyl ether sulfates are interfaced with the monoglyceride sulfonates of the present invention and within the scope of the present invention. In consideration of the characteristics of the active agent, it may be used in combination of two to three or more within the range of 1 to 25% by weight, less than the monoglycerite sulfonate content of the present invention.

In order to prepare the solid soap with the complex soap composition of the present invention, the complex soap composition of the present invention may be used by mixing one or more compounds selected from the group consisting of binders, plasticizers and excipients. Binders and plasticizers improve the workability of soap manufacture by imparting binding and plasticity to soaps, and affect physical properties such as hardness and foaminess, smoothness and smoothness after use of soaps, and generally Higher fatty acids such as higher fatty alcohols and palm oil fatty acids used, hardened fats and oils, paraffin waxes, polyesters, polyethylene glycols, sodium stearate, hardened castor oils and fatty alkyl ketones can be used. In addition, the excipient serves to maintain the internal structural stability of the final product or the hardness of the product may be used dextrin, starch, salt, talc and the like commonly used.

In addition, the composite soap composition according to the present invention is about 5 to 20% by weight of the components used in conventional cosmetic soap, pigments such as white pigments such as titanium dioxide, flavoring agents, antioxidants, metal ion sequestering agents such as ethylene diamine tetraacid And additives such as other additives. Other components except water are used in trace amounts.

The complex soaps described in the present invention can be prepared in various ways. As a general method for preparing a complex soap, a washing agent and an additive are added to a mixer, mixed for a predetermined time, uniformly remixed by a milling process, and then prepared by a general soap process, and an additive except a main cleaning base. Some or all of them are prepared as a slurry (slurry), and then mixed with the main cleaning base, and then prepared by a general soap manufacturing process.

In the method of preparing a complex soap composition for an embodiment of the present invention, a fatty acid-based cosmetic soap, a monoglyceride sulfonate, and other additives are added to a mixer for about 5 minutes, followed by mixing in a three-stage roll mill. After homogeneous mixing, but was prepared through a mold-taking process, which is a process of tableting to make a mixture, molding, extrusion and mold in accordance with a conventional soap manufacturing method, the composite soap manufacturing method of the present invention is not limited thereto.

Hereinafter, the present invention will be described in detail with reference to Examples and Comparative Examples, but the present invention is not limited to the following Examples and Comparative Examples.

(Example 1)

Sodium tallowyl / cocoil soap 76.65 wt%, sodium coco monoglyceride sulfonate 6.0 wt%, palm oil fatty acid 3.0 wt%, salt 1.0 wt%, moisture 12.0 wt%, ethylene diamine tetraic acid 0.05 wt%, titanium dioxide 0.3 wt% %, Fragrance 1.0 weight% of the composition was uniformly mixed in an amalgamator and a three-stage roll mill, and then soap was prepared by molding and extrusion process in a general fatty acid cosmetic soap manufacturing apparatus.

(Examples 2-3)

Soap was prepared in the same manner as in Example 1, except that the amount of each component was changed as shown in Table 1 below.

(Comparative Examples 1 to 7)

To use a component shown in Table 1 in the ratio shown in Table 1 and to carry out in the same manner as in Example 1 to prepare a soap.

                                                                      [weight%] Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 Sodium Tallow Oil & Coconut Soap 76.65 70.65 64.65 85.65 82.65 82.65 76.65 64.65 79.65 73.65 Sodium cocomonoglyceridesulfonate 6.0 12.0 18.0 0 0 0 0 0 0 0 Sodium Cocoil Isetionate 0 0 0 0 0 0 6.0 18.0 0 0 Sodium Lauret Sulfate 0 0 0 0 0 0 0 0 6.0 12.0 Palm oil fatty acid 3.0 3.0 3.0 0 3.0 0 3.0 3.0 0 0 glycerin 0 0 0 0 0 3.0 0 0 0 0 Salt 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 moisture 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 Ethylene Diaminetetraic Acid 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 Titanium dioxide 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 Spices 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0

(Examples 4 to 7)

To prepare a soap in the same manner as in Example 1 using the ingredients shown in Table 2 in the amount shown in Table 2.

(Comparative Example 8-9)

To use a component shown in Table 2 in the amount shown in Table 2 was carried out in the same manner as in Example 1 to prepare a soap.

(Control 1-2)

Soap was prepared in the same manner as in Example 1, except that the amount of each component was changed to the amount shown in Table 2 below.

                                                                      [weight%] Example 4 Example 5 Example 6 Example 7 Comparative Example 8 Comparative Example 9 Comparative Example 10 Comparative Example 11 Sodium Tallow Oil & Coconut Soap 81.65 48.65 77.65 75.65 83.65 44.65 79.65 79.65 Sodium cocomonoglyceridesulfonate 3.0 32.0 0 0 1.0 38.0 0 0 Sodium tallowyl / cocoyl monoglyceridesulfonate 0 0 6.0 6.0 0 0 0 0 Sodium Lauret Sulfate 0 0 0 2.0 0 0 0 0 Palm oil fatty acid 1.0 5.0 2.0 2.0 1.0 3.0 0 6.0 Sorbitol 0 0 0 0 0 0 6.0 0 Salt 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 moisture 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 Ethylene Diamine Tetra Acid 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 Titanium dioxide 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 Spices 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0

The softness, moisturizing ability and usability of the composite soap prepared by the method of Example 1-7 and Comparative Example 1-11 were measured by the following test methods, and the softness of the soap was compared with the appearance after absorption and water absorption. It was.

(1) absorbency test

Flower the soap (W ₁ ) in a pin (W ₂ ) knowing the weight and immersed in a 25 ℃ constant temperature water bath for 4 hours, then taken out and dried for 1 hour in a soap bar drying rack of 20 ~ 25 ℃ and weigh the weight ( W ₃ ). Subsequently, absorbance was measured according to Equation 1 below, and the results are shown in Table 3 below.

[Equation 1]

_Absorbance (%) = ₂₃₁₂₁ × 100

Absorption means that the larger its value, the greater the ability to contain water, and thus the poorer the physical properties. The absorbency of the general fatty acid cosmetic soap is usually 5 to 25%.

(2) appearance after absorption

In the absorbency test of the test method (1), after dipping the soap at 25 ° C. for 4 hours, the soap appearance or surface state was evaluated based on the following criteria.

[Evaluation standard]

○: The soap does not swell and the appearance is clean.

(Triangle | delta): A soap swells a little and a little uneven | corrugated pattern arises in an external appearance.

X: The soap swells heavily and the absorbed portion flows down.

(3) moisture retention test

Soaps prepared according to Examples 1-7 and Comparative Examples 1-5, Comparative Examples 11 and Comparative Examples 1-2 were diluted with distilled water to form a 4% aqueous solution, and 0.5 ml of this aqueous solution was taken. Rub the area for 1 minute, wait 30 seconds, and rinse under running water for 10 seconds. After washing twice (primary / secondary) at 3 hour intervals per day, the moisture retention was measured after 30 minutes for each soap, and then compared with the moisture retention before washing as shown in Equation 2 below.

[Equation 2]

Moisture retention (%) = × 100

The equipment used in this test was SKICON 200, and the test was carried out in a constant temperature and humidity room at 25 ° C. and 50% relative humidity.

(4) feeling test

For soap compositions prepared by the methods of Examples 1-7, Comparative Examples 1-5, Comparative Examples 11 and Controls 1-2, male and female 15 subjects were generally cosmetic soaps in tap water at 25 ° C. After the use by the method of using, to give a score by the criteria shown in Table 3 below to represent the average value.

Feeling 5 points The smoothness and texture of the soap is very good 4 points Some smoothness and texture of the soap is good 3 points Smoothness and bubble level of soap are common 2 points Smoothness and texture of soap is slightly bad 1 point The smoothness and texture of the soap is very bad

The feeling value of the general fatty acid cosmetic soap is 3.0 or more.

Absorbance measured by the above method, appearance after absorption, usability and moisturizing power (primary and secondary) were measured and the results are shown in Tables 4 and 5 below.

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Absorbance [%] 16.2 18.3 20.6 18.5 17.3 29.5 21.4 32.3 31.3 43.5 Appearance after absorption ○ ○ ○ ○ ○ △ ○ × × × Feeling 4.0 4.3 4.5 3.1 3.5 3.8 4.0 4.1 - - Moisturizing power (primary) [%] 59.3 63.8 71.5 41.2 44.5 51.3 52.5 60.7 - - Moisturizing power (secondary) [%] 54.2 59.8 67.3 33.5 38.4 43.5 45.6 54.0 - -

Example 4 Example 5 Example 6 Example 7 Comparative Example 8 Comparative Example 9 Comparative Example 10 Comparative Example 11 Absorbance [%] 14.8 23.1 16.3 21.8 17.5 29.5 34.3 15.2 Appearance after absorption ○ ○ ○ ○ ○ △ × ○ Feeling 3.6 4.1 3.9 4.0 3.3 4.2 - 3.7 Moisturizing power (primary) [%] 54.1 74.5 58.3 59.5 47.1 75.0 - 48.5 Moisturizing power (secondary) [%] 49.3 71.6 53.0 54.1 40.7 73.1 - 43.5

As shown in Tables 4 and 5 above, when the monoglyceride sulfonate is used within the scope of the present invention or mixed with other surfactants as an auxiliary cleaning agent in the general fatty acid soap, and the general fatty acid soap and / or It can be seen that the initial moisturizing power and the quality of the feeling after the repeated use and the quality of the feeling are superior to the soaps to which the moisturizing agent is added, and the physical properties and appearance quality after water absorption can be maintained similar to the general fatty acid soap.

In addition, the composite soap composition of the present invention can be seen that the physical properties at the time of water absorption than soaps containing acyl isethionate or alkyl sulfate, which is a surfactant generally used in composite soaps, it has a moisturizing power during initial use and repeated use It can be seen that the moisturizing power is also good.

However, when its amount is low, general physical properties are good, but the effect of improving the quality of the moisturizing effect and feeling is small. When the amount of the used amount is more than a certain amount, the moisturizing effect is excellent but the physical property when absorbing water and the appearance after absorption are not good. have.

As described above, the composite soap composition of the present invention is excellent in general physical properties such as the soapiness of the soap, and very excellent in moisturizing power and feeling of use according to repeated use.

Claims (2)

Fatty acid cosmetic soaps; And 2 to 35% by weight of the monoglyceride sulfonate of the formula Complex cosmetic soap composition comprising a. [Formula 1] (Wherein R is alkyl having 7 to 21 carbon atoms and M is sodium, potassium, triethanol amine or ammonia) The method of claim 1, The soap composition comprises a composite cosmetic soap composition further comprises 1 to 25% by weight of the surfactant.