KR100469770B1 - a soap weak acid of manufacturing method and thereof product - Google Patents

Abstract

Method for producing a mildly acidic human soap for washing according to the present invention comprises the first step of mixing 5 to 9% by weight of disodium laureth sulfosuccinate, 0.5 to 2% by weight of salt (NaCl) at room temperature; A second step of adding 4-6% by weight of sebum-200 and 4-6% by weight of glycerin to the mixed solution mixed in the first step and mixing at room temperature for about 10 minutes; Adding a polycutenium-10 0.4 to 0.8% by weight to the solution mixed in the second step and scattering at room temperature; 8 to 12% by weight of Fiji-1540, 8 to 12% by weight of ethylene glycol straight, and 15 to 20% by weight of stearic acid are mixed in the mixed solution mixed in the third step and dissolved at about 50 to 70 ° C for about 30 minutes. A fourth step; A fifth step of mixing sodium cocoyl ishithionate and 30 to 60% by weight of stearic acid in a small amount in the solution dissolved in the fourth step, but heating the solution to 100 ° C. to dissolve it; A sixth step of mixing the dissolved mixture in the fifth step by dividing 10-15 wt% of sorbitol at a predetermined time interval and heating it to a temperature of 120 ° C .; A seventh step of adding 0.6-1 wt% of propylene glycol to the solution mixed in the sixth step and heating to 140 ° C. to dissolve it; The seventh step is characterized in that the eighth step of producing a human cleansing soap by mixing 0.5% to 0.9% of the fragrance in the molten mixed solution and cooled to about 70 ~ 85 ℃ range and poured into a mold to solidify.

Description

Soap weak acid of manufacturing method and its product

The present invention relates to a mildly acidic human cleansing soap composition, and more particularly, a weakly acidic human cleansing soap prepared using a synthetic surfactant as a main raw material such that the pH of the aqueous solution has a value between 5.0 and 6.0 close to the pH of human skin. It relates to a manufacturing method and a product thereof.

Among the commonly used human body soaps, cosmetic soaps are made from copper, vegetable oils such as Uji, palm, palm, palm kernel oil, or fatty acids directly by saponification or neutralization with sodium hydroxide (NaOH) or caustic potassium (KOH). It refers to a human cleanser that has a fatty acid salt that has a proper flavor and pigment added thereto.

Normally, the pH of the cosmetic soap is in the range of about 10 to 10.5, and when about 2 to 5% of super fat is contained, it is in the range of 9.5 to 10. For reference, the pH is in the range of 0 to 14, and the higher the value, the stronger the base, and the lower the pH, the weaker the acidity. Of course, the middle range can be called neutral.

The soap also cannot have a neutral pH, which means that the soap loses its properties, i.e., surfactant activity. Therefore, as long as soap is used, people with dry or sensitive skin cannot avoid skin irritation such as pulling the skin or turning red when the skin is severe.

After all, cosmetic soap has a pH of about 10 to 10.5 so that the skin irritation caused by alkali to maintain the pH level of about 5.4, and in severe cases may cause erythema or itching. Therefore, in order to reduce the irritation caused by alkali, it is necessary to use a detergent having a neutral to weakly acidic pH using a synthetic surfactant as a main raw material, but it is not widely used because the manufacturing process is difficult and the physical properties are bad.

However, the surfactant has a relatively simple structure and is suitable for manufacturing facilities such as thermoplastics, and is also economically inexpensive and is also the most widely used cleaning material.

Neutral soaps and weakly acidic soaps using synthetic surfactants as main ingredients are convenient to use only when they have similar frictional solubility, hardness and foaming power, similar to makeup soaps, but they are basic properties of raw materials, types and amounts of binders, and manufacturing. Due to the different processes, it is not possible to obtain a feeling similar to cosmetic soap, and efforts are being made to reduce the difference in feeling and to strengthen the hypoallergenicity, which is an original advantage.

Unlike soaps with various crystal structures, synthetic surfactants have weak crystallinity and high solubility, so that their solidity becomes weak even if they contain a small amount of water. As should be included a lot of excipients, such as fatty acids, fatty alcohols. In addition, depending on the manufacturing conditions, such as moisture, binder type, temperature, fragrance, the amount of oil, etc., too high hardness or adhesive strength becomes impossible to normal production.

Neutral soap in synthetic surfactant washing soap contains about 10 to 20% by weight of pure soap in the main component of the surfactant, so that the pH is neutral and the physical properties are adjusted to suit general cosmetic soap manufacturing facilities. The disadvantage of poor rinsability when used has been steadily raised since it must include an excessive amount of fatty acid or fatty alcohol as a binder.

In particular, weakly acidic human cleansing soaps have less irritation than neutral soaps in skin physiology, but the manufacturing process is more difficult than neutral soaps.The soaps are generally manufactured because the main ingredient consists only of synthetic surfactants and soap components cannot be used. This is because manufacturing is not suitable for the installation.

This is because the hardness increases depending on the composition, so that the contents are hard or sticky in the extruder, resulting in a sticky property that prevents the extruder from rotating and prevents the contents from moving forward along the extruder screw.

As such, it is difficult to match the general properties of the synthetic surfactant human soap to reduce skin irritation caused by alkali, and it is a major concern for researchers in this field.

Synthetic surfactants usually used in the manufacture of neutral or mildly acidic solid human soaps include acyl N-methyltaurate, alkyl sulfosuccinates, acyl isethionates, acyl glutamate, fatty alcohol sulfates, and glyceryl ester sulfates. Among these, acyl isethionate is most commonly used. However, in order to make a solid detergent, physical properties require excessive fatty acids or fatty alcohols as described above.

In terms of skin irritation, amino acid-based surfactants are considered to be much less irritant than sulphonates and sulfate-based surfactants, and have excellent rinsing properties. In particular, to make a mildly acidic human cleansing soap, only pure synthetic surfactants should be used, but similar to the existing solid cosmetic soaps, the feeling of skin is remarkably reduced, and the foaming ability is excellent. Acyl glutamate, a type of amino acid-based surfactant, is used. For example.

Recently, research has been actively conducted to make human soaps, such as cosmetic soap, using new synthetic surfactants to make skin soaps that alleviate skin irritation and do not form soapy stains. It is a trend to use a lot of soap with neutral or pH lowered below 9 by using or mixed with soap.

Such synthetic surfactant soap for human cleansing should be equal to or superior to existing cosmetic soaps in terms of bubble generation, stability, surface feel, and irritation, and should not interfere with other physical properties. In other words, the plasticity should not be easily broken, the water should not penetrate easily and retreat, the wear rate should not be excessively worn out, and should not be broken during use.

Typically, the soap composition for human cleansing is composed of 40 to 70% by weight of anionic surfactant, 20 to 40% by weight of binder and plasticizer, and other less than 10% by weight, and the double binder and plasticizer can be easily prepared by imparting proper thermoplastic to the soap. It is also used as a skin softener and a high molecular material, such as polyethylene glycol, fatty alcohol, fatty acids, hydrogenated triglycerides, paraffin wax, etc. are usually used, each of the amount needs to be appropriately mixed to meet the manufacturing conditions.

Several types of anionic surfactants have been developed and can be used alone or in mixtures of two or more. Soaps can also be used in combination as surfactants and plasticizers. Synthetic surfactants that can be used to make solid human cleansing soaps, for example as disclosed in International Patent WO 95/13356, include acyl sacosinates, alkyl sulfates, methylacyl taurates, N-acyl glutamate, ethoxylated alkyl sulfates, alkyl phosphates. Various kinds of esters, alkyl sulfosuccinates, ethoxylated alkyl phosphates can be used, and most of them are used to make sodium salts.

However, although acyl glutamate is very difficult to make a solid cleaning soap without using a binder, in fact, the development of acyl glutamate is very difficult and there is no practical effect.

Examples of the application of acyl glutamate to soaps for human cleansing are the human soap composition for washing described in US Pat. Nos. 5,693,604 and 5,387,372, and commercially available creamy cleansing products. Away from the cleaning soap composition.

Solid human soap compositions include transparent soap compositions described in Japanese Patent No. 11,131,099 and two or more synthetic surfactant mixture compositions described in Japanese Patent Nos. 10,306,293, 10,237,494, 06,057,289 and 06,025,695. These techniques have the disadvantage that acyl glutamate is not used as a main ingredient but as an auxiliary material and thus does not significantly improve skin irritation.

The present invention was devised to solve the problems caused by the above-described soap for washing the human body, and an object of the present invention is the pH of an aqueous solution containing disodium aureth sulfosuccinate and sodium cocoyl isitionate as main components. The present invention provides a method for producing a weakly acidic human cleansing soap and a product thereof, which are manufactured to have a value between 5.0 and 6.0 close to the pH of human skin.

Method for preparing a mildly acidic human soap according to the present invention is 5 to 9% by weight of disodium laureth Sulfossucinate, 0.5 to 2% by weight of salt (NaCl), and the first step of mixing sufficiently ;

A second step of adding 4-6% by weight of sebum-200 and 4-6% by weight of glycerin to the mixed solution mixed in the first step and mixing at room temperature for about 10 minutes;

A third step of adding polycutenium-10.4 to 0.8% by weight to the solution mixed in the second step and scattering at room temperature;

8 to 12% by weight of Fiji-1540, 8 to 12% by weight of ethylene glycol straight, and 15 to 20% by weight of stearic acid are mixed in the mixed solution mixed in the third step and dissolved at about 50 to 70 ° C. for about 30 minutes. A fourth step;

A fifth step of mixing sodium cocoyl ishithionate and 30 to 60% by weight of stearic acid in a small amount in the solution dissolved in the fourth step, but heating the solution to 100 ° C. to dissolve it;

A sixth step of mixing the dissolved mixture in the fifth step by dividing 10-15 wt% of sorbitol at a predetermined time interval and heating it to a temperature of 120 ° C .;

A seventh step of adding 0.6-1 wt% of propylene glycol to the solution mixed in the sixth step and heating to 140 ° C. to dissolve it;

In the seventh step it is characterized in that the eighth step of producing a cleaning soap by mixing 0.5% to 0.9% of the fragrance in the molten mixed solution and cooled to about 70 ~ 85 ℃ range and poured into a mold to solidify.

Hereinafter, a method for preparing a mildly acidic human cleansing soap according to the present invention and a product thereof will be described in detail.

Disodium Laureth Sulfossucinate in the composition according to the method for preparing a weakly acidic human body washing soap of the present invention promotes and stabilizes the lather, and the silver ion interface activity, the preferred ratio is 6% by weight was used.

Salt (NaCl) is to increase the resistance to water in the present invention was mixed with 1% by weight of salt.

Fiji-200 and glycerin are added for moisturizing action. When the amount of the mixture is increased, the moisturizing effect is excellent, but the strength of the cleaning product is reduced. In a preferred embodiment of the present invention, Fiji-200 is 5.0% by weight and glycerin is 5% by weight.

Polycutenium-10 acts to increase the viscosity and resistance to water. The higher the dosage, the higher the viscosity and the greater the resistance to water. As a preferred embodiment of the present invention, polycutenium-10 was added at 0.6 wt%.

Fiji-1540 and ethylene glycol straight and stearic acid are the components for the surface active action. The binder included in the composition of the synthetic surfactant soap facilitates the extrusion during the extrusion process, and the properties of the product such as softness and hardness are applied. It is effective in making it similar to soap, and in general, synthetic surfactants have a disadvantage in being easily receded during use because they have better solubility than soap, and the use of a binder is not intended to improve the manufacturing process, but particularly to improve the physical properties of the product. It is effective to improve.

Therefore, the above-mentioned Fiji-1540 and ethylene glycol straight and stearic acid are improved in moisturizing and surfactant activity as their content increases. In the present invention, the content of Fiji-1540 and ethylene glycol straight is 10% by weight, stearate. The content of rick seed was 17% by weight.

Sodium cocoyl isethionate (R-C (O) CH2CHSO3Na R: C12) acts as a moisturizing enhancer and withdraws as the strength of the soap increases. And it works effectively to adjust the pH to 5.0-5.5. Stearic acid is added to compensate for water resistance while assisting in solidification. In addition, it acts to adjust the concentration of pH more precisely, that is, to a more accurate value within the range of pH 5.0 to 6.0.

Sorbitol (Sorbitol) and propylene glycol (Propylene Glycol) is added for the moisturizing action, in the present invention, sorbitol (Sorbitol) is added 12% by weight, propylene glycol (Propylene Glycol) was added 0.8% by weight.

And the fragrance was added 0.6% by weight as a fragrance added to give a predetermined odor in the cleaning product.

Looking at each step of the detailed work process of the mildly acidic human body soap for manufacturing according to the present invention.

First, as a first step, 6% by weight of disodium laureth Sulfossucinate and salt (NaCl) (1% by weight) are sufficiently mixed at room temperature for a few minutes, and as a second step, the first step is Fiji-200 (5% by weight) and glycerin (5% by weight) are added to the mixed solution and mixed for about 10 minutes at room temperature.

The mixed solution is mixed with polycutenium-10 (0.6% by weight) in a third step and scattered at room temperature. As a fourth step, PHYG-1540 (10% by weight), ethylene glycol straight (10% by weight) and stearic acid (17% by weight) were mixed with the mixed solution mixed in the third step, and the mixture was about 50 to 70 ° C. Dissolve for 30 minutes.

In the fifth step, a small amount of sodium cocoyl isocionate wasaric acid (32% by weight) is added to the solution dissolved in the fourth step, preferably in quarter portions, and mixed at regular intervals for 30 minutes. It is kept at ℃ and heated to dissolve.

As a sixth step, the mixture dissolved in the fifth step is mixed with sorbitol (12% by weight) at a predetermined time interval, and heated at a temperature of 120 ° C.

As a seventh step, propylene glycol (0.8% by weight) is added to the solution mixed in the sixth step and dissolved by heating at 140 ° C until it is completely dissolved. The reason for adding the raw material (sodium cocoyl isythionite + stearic acid) at 140 ° C. at 140 ° C. is that it melts at this temperature, and browning occurs and smells badly from the beginning.

In addition, the reason for adding salt and ethylene glycol straight in the first to seventh step of the manufacturing process is to increase the resistance to water.

The washing solution mixture dissolved in this manner is the eighth step. In the molten state, the mixture is further added with perfume (0.6% by weight), cooled to approximately 70 to 85 ° C, poured into a mold and solidified, and then demolded from the mold. It can be produced a weak acid soap product for human washing.

As described above, the mildly acidic human soap manufacturing method according to the present invention is easy to manufacture the pH range of pH 5.0 ~ pH 6.0 suitable for the pH of the skin can produce a mildly acidic soap product.

Claims (2)

5 to 9% by weight of disodium laureth sulfosuccinate, 0.5 to 2% by weight of salt (NaCl), and a first step of mixing sufficiently at room temperature; A second step of adding 4-6% by weight of sebum-200 and 4-6% by weight of glycerin to the mixed solution mixed in the first step and mixing at room temperature for about 10 minutes; Adding a polycutenium-10 0.4 to 0.8% by weight to the solution mixed in the second step and scattering at room temperature; 8 to 12% by weight of Fiji-1540, 8 to 12% by weight of ethylene glycol straight, and 15 to 20% by weight of stearic acid are mixed in the mixed solution mixed in the third step and dissolved at about 50 to 70 ° C for about 30 minutes. A fourth step; A fifth step of mixing sodium cocoyl ishithionate and 30 to 60% by weight of stearic acid in a small amount in the solution dissolved in the fourth step, but heating the solution to 100 ° C. to dissolve it; A sixth step of mixing the dissolved mixture in the fifth step by dividing 10-15 wt% of sorbitol at a predetermined time interval and heating it to a temperature of 120 ° C .; A seventh step of adding 0.6-1 wt% of propylene glycol to the solution mixed in the sixth step and heating to 140 ° C. to dissolve it; In the seventh step, a weak acidic human body wash comprising the eighth step of preparing a cleaning soap by mixing 0.5% to 0.9% of the fragrance in the molten mixed solution and cooling it to about 70 ~ 85 ℃ range and poured into a mold to solidify. Soap preparation method. A first step of sufficiently mixing disodium laureth sulfosuccinate 5-9% by weight and salt (NaCl) 0.5-2% by weight at room temperature; A second step of adding 4-6% by weight of sebum-200 and 4-6% by weight of glycerin to the mixed solution mixed in the first step and mixing at room temperature for about 10 minutes; Adding a polycutenium-10 0.4 to 0.8% by weight to the solution mixed in the second step and scattering at room temperature; 8 to 12% by weight of Fiji-1540, 8 to 12% by weight of ethylene glycol straight, and 15 to 20% by weight of stearic acid are mixed in the mixed solution mixed in the third step and dissolved at about 50 to 70 ° C for about 30 minutes. A fourth step; A fifth step of mixing sodium cocoyl ishithionate and 30 to 60% by weight of stearic acid in a small amount in the solution dissolved in the fourth step, but heating the solution to 100 ° C. to dissolve it; A sixth step of mixing the dissolved mixture in the fifth step by dividing 10-15 wt% of sorbitol at a predetermined time interval and heating it to a temperature of 120 ° C .; A seventh step of adding 0.6-1 wt% of propylene glycol to the solution mixed in the sixth step and heating to 140 ° C. to dissolve it; In the seventh step, a weak acid body wash, characterized in that prepared in the eighth step to prepare a cleaning soap by mixing 0.5% to 0.9% of the fragrance in the molten mixed solution and cooled to about 70 ~ 85 ℃ range and poured into a mold to solidify. Soap products.