KR100573961B1 - Two Phase Separation Conditioning Shampoo Composition - Google Patents

Abstract

The present invention relates to a two-phase separation conditioning shampoo composition, wherein the shampoo composition comprises at least one anionic surfactant, at least one hair conditioning agent, at least one emulsifier, at least 3 to 10% by weight of at least one water soluble inorganic salt and 0.1 starch. To 2.0 wt%. The shampoo composition is very easy to use because it has a very good conditioning effect and a fast two-phase separation rate.

Description

Two Phase Separation Conditioning Shampoo Composition

[Industrial use]

The present invention relates to a two-phase separated conditioning shampoo composition, and more particularly, to a two-phase separated conditioning shampoo composition having an excellent conditioning effect.

[Prior art]

In response to the trend of pursuing good usability and simplicity around the world, the use of conditioning shampoos such as rinse-based shampoos has exploded since the late 1980s, and in 1998, 90% of the shampoo market in Korea was included in the shampoo market. Occupies a degree.

Such conditioning shampoos generally contain polydimethylsiloxane (polydimethylsiloxane or silicone) or derivatives thereof or silicone in water or oil insoluble form. These components have the disadvantage that they are not easily mixed in water or surfactant solutions, and additionally, polymer stabilizers or other nonionic surfactant stabilizers must be used to stabilize these water insoluble silicones or conditioning ingredients in the shampoo. However, the use of such polymer stabilizer or other nonionic surfactant stabilizer requires not only the raw material cost but also a separate dissolving tank. There is a disadvantage that is not economic.

In addition, since these stabilizers have a negative effect on the sensual feeling when using the shampoo, there is a limitation in the conditioning effect because the use of a water-insoluble conditioning agent should be used within a range that ensures stability. To compensate for these drawbacks, nonionic surfactant stabilizers, such as ethylene glycol monostearate and ethyleneglycodistearate, are used to stabilize silicone in the product (US Pat. No. 4,788,006), but also use significant amounts of polymer components. shall.

As described above, in the case of using the polymer stabilizer, the polymer stabilizer is competitively adsorbed to the conditioning component and the hair, thereby reducing the conditioning effect and using ethylene glycol monostearate or ethylene glycol distearate, which are nonionic surfactant stabilizers. If there is a disadvantage in that the stability of the product over time.

Therefore, in order to alleviate these shortcomings, interest in a two-phase separation shampoo consisting of a phase having a cleaning function (surfactant component phase, a water phase) and another phase having a hair trimming function (conditioning component phase, an oil phase) This continues but is limited to special purposes such as anti-dandruff shampoos (US Pat. No. 5,132,107 and US Pat. No. 4,438,095). In addition, since the two-phase separation shampoo must be easily shaken and mixed, the viscosity of the separated phase must be low. In order to make up for such drawbacks, studies are being conducted to change the shape of the pump spray type and the mousse type.

The two-phase separation shampoo, which was once marketed in Japan, has a very low proportion of oil phase which can give a conditioning effect (below 5% by weight), which gives a lower conditioning effect than a conventional rinse shampoo and has a disadvantage of flowing down to a low viscosity. Have together.

The present invention is to solve the above problems, an object of the present invention is to provide a two-phase separated conditioning shampoo composition excellent in the conditioning effect.

Another object of the present invention is to provide a two-phase separated conditioning shampoo composition that is easy to use because it does not flow down.

[Means for solving the problem]

In order to achieve the above object, the present invention is at least one anionic surfactant; One or more hair conditioning agents; One or more emulsifiers; Water soluble inorganic salt 3 to 10% by weight; And 0.1 to 2.0% by weight of starch.

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

The present invention was completed by finding that the speed of mixing two phases, the viscosity after mixing, and the speed of re-separation of the mixed phases are different depending on the raw materials used and the composition of the separated phases. The two-phase separated conditioning shampoo composition of the present invention is largely composed of a surfactant component phase (hereinafter referred to as "water phase") and a conditioning component phase (hereinafter referred to as "oil phase").

The two-phase separated conditioning shampoo composition of the present invention comprises 5 to 25% by weight of one or more anionic surfactants, 0.1 to 20.0% by weight of one or more hair conditioners, 0.1 to 2.0% by weight of one or more emulsifiers, and 3 to 10 water-soluble inorganic salts. Wt%, starch 0.1-2.0 wt%. The composition of the present invention may further include additives used to prepare general shampoos such as pigments, perfumes and water. As such, the conditioning shampoo composition of the present invention includes a water-soluble inorganic salt and starch, thereby maximizing two-phase separation characteristics.

Since the shampoo composition of the present invention contains a water-soluble inorganic salt, the specific gravity of the aqueous phase is increased to shorten the two-phase separation time. If the amount of the water-soluble inorganic salt is used in 3 to 10% by weight of the shampoo composition, the viscosity of the water phase is lowered, the speed of separation of the two phases is faster. If the amount of the water-soluble inorganic salt is less than 3% by weight, the viscosity of the water phase becomes high, rather it takes a long time for two-phase separation, and when it exceeds 10% by weight, the surfactant tends to precipitate. As the water-soluble inorganic salt, any water-soluble inorganic salt can be used. Examples thereof include sodium chloride, sodium nitrate, sodium bromide, potassium chloride, and brominated. Potassium bromide and the like can be used.

The shampoo composition of the present invention contains 0.1 to 2.0% by weight starch. As such, the viscosity after the two-phase mixing is increased as the starch is included, thereby improving the disadvantage of flowing down from the palm in actual use. If the amount of starch used is less than 0.1% by weight, the effect of increasing the viscosity after mixing of two phases is weak, and if it exceeds 2.0% by weight, the viscosity of the aqueous phase is excessively increased, thereby reducing the re-separation rate after mixing of two phases. As a starch, any of the general starches used for cosmetics may be used, and representative examples thereof include wheat starch, corn starch, rice starch, oat starch, and potato starch. (potato starch) and the like, water-soluble hydrolyzed starch (hydrolyzed starch) and amylodextrin (amylodextrin) can be used.

In the present invention, at least one anionic surfactant was used in an amount of 5 to 25% by weight in the total two-phase separation conditioning composition. As the anionic surfactant, a surfactant without addition of ethylene oxide and a surfactant with addition of ethylene oxide may be used alone or in combination. The inventors found that the more surfactants to which ethylene oxide was added, the slower the separation rate between the surfactant component phase (water phase) and the conditioning agent component phase (oil phase). It is presumed that the addition of ethylene oxide improves the solubilization ability of the anionic surfactant ("Surfactants A Comprehensive Guide", 1st Edition, p. 36-37, Kao (1983)). In the present invention, in order to promote the separation rate between the aqueous phase and the oil phase, a surfactant without adding ethylene oxide or an surfactant added with ethylene oxide as an anionic surfactant was mixed and used in a weight ratio of 1: 1 to 3: 1. . In the case of using the surfactant mixed in this mixing ratio, the separation rate of the aqueous phase and the oil phase is the fastest.

As the anionic surfactant to which ethylene oxide is not added, sodium lauryl sulfate, ammonium lauryl sulfate, and lauryl sulfate triethanolamine can be used, and as the anionic surfactant added with ethylene oxide, sodium polyoxyethylene lauryl sulfate and polyoxyethylene Ammonium lauryl sulfate, polyoxyethylene lauryl triethanolamine, etc. can be used.

As a hair conditioning agent, silicone components, such as silicone or silicone gum, and oil components, such as ester oil and mineral oil, can be used individually or in mixture, respectively. Preferably, the mixing of the silicone component and the oil component improves the conditioning effect and increases the two-phase separation rate. The conditioning effect is the best when the silicone component and the oil component are mixed in a weight ratio of 1: 1 to 3: 1. The content of the hair conditioning agent is 0.1 to 20.0% by weight in the total two phase separation conditioning composition.

Examples of the silicone include methicone (cyclomethicone), polydimethylsiloxane (polydimethylsiloxane or dimethicone), and derivatives thereof. Phenyltrimethicone and the like can be used. In addition, the silicone gum may be dissolved in volatile silicone, low molecular weight polydimethylsiloxane, derivatives thereof, or the like, and may also be used in an emulsion state of emulsifying them.

The ester oil is myristic acid isopropyl, palmitic acid isopropyl, stearic acid, isostearyl, C ₁₂ - ₁₅ alkyl benzoate and the like, mineral oil is a liquid paraffin (mineral oil), isoparaffinic.

As the emulsifier, it is preferable to use a lipophilic emulsifier having a hydrophilic-lipophilic balance (HLB) of 2-10. When an appropriate amount of a lipophilic emulsifier having an HLB value of 2-10 is used, an aqueous phase and an oil phase are easily mixed, and when the oil phase contains two or more components, the separated oil phase shows an emulsion phase in which the oil phase is uniformly dispersed and mixed. The content of emulsifier in the total two-phase separation conditioning composition is 0.1 to 2.0% by weight. Emulsifiers used are span series, which is a sorbitan derivative such as sorbitan monolaurate, sorbitan monooleate, or polyethylene oxide-5 sorbitol olethyr (polyethyleoxide-5 sorbitol). oleate) and glycerol monostearate, such as low HLB emulsifiers are mainly used. However, it is also possible to use a mixture of twin series, Myrj series, and span series with high HLB polyethylene oxide so that the HLB value is 2-10.

EXAMPLE

Hereinafter, the present invention will be described in detail as comparative examples and examples. However, the present invention is not limited thereto.

(Examples 1 to 3)

Starch, NaCl, 30% sodium lauryl sulfate, 30% polyoxyethylene lauryl sulfate, C _12-15 alkyl benzoate, polydimethylsiloxane, and sorbitan monolaurate were added to water at the composition ratio shown in Table 1, followed by stirring for 30 minutes. It was.

Subsequently, a pigment, paraoxybenzoic acid ester, perfume and citric acid were added to the mixture, followed by stirring for 30 minutes to prepare a shampoo.

(Comparative Example 1)

30% sodium lauryl sulfate, 30% polyoxyethyleneauryl sulfate, C _12-15 alkylbenzoate, polydimethylsiloxane, and sorbitan monolaurate were added to the water in the composition ratio as shown in Table 1, followed by stirring for 30 minutes.

Subsequently, the carboxyvinyl polymer previously dispersed in an appropriate amount of water was added thereto, and triethanolamine, a dye, paraoxybenzoic acid ester, perfume and citric acid were added thereto, and stirred for 30 minutes to prepare a shampoo.

(Comparative Example 2)

30% sodium lauryl sulfate, 30% polyoxyethyleneauryl sulfate, C _12-15 alkylbenzoate, ethylene glycol distearate, polydimethylsiloxane, sorbitan monolaurate were added to the water at the composition ratio as shown in Table 1. Warmed to 65 ° C. and stirred for 30 min.

Subsequently, the carboxyvinyl polymer previously dispersed in an appropriate amount of water was added thereto, and triethanolamine, a dye, paraoxybenzoic acid ester, perfume and citric acid were added thereto, and stirred for 30 minutes to prepare a shampoo.

(Comparative Example 3-6)

30% sodium lauryl sulfate, 30% sodium polyoxyethyleneauryl sulfate, C _12-15 alkylbenzoate, polydimethylsiloxane, sorbitan monolaurate in water at the composition ratio as shown in Table 1 After the addition, the mixture was stirred for 30 minutes.

Subsequently, the carboxyvinyl polymer previously dispersed in an appropriate amount of water was added thereto, and triethanolamine, a dye, paraoxybenzoic acid ester, perfume and citric acid were added thereto, and stirred for 30 minutes to prepare a shampoo.

TABLE 1

[weight%]

* Product Name Starch Soluble (Manufacturer: Merck KGaA)

**: Trade name Findsolv TN (Manufacturer: Fintex)

***: DC 200F (10 ⁴ cs) (Manufacturer: DC silicone)

****: Carbopol 1342 (Manufacturer: Goodrich)

For these shampoos, cleaning power, conditioning effect, foaming power, ease of two-phase mixing, ease of two-phase re-separation, and viscosity of the mixed phase were measured in the following Test Examples 1, 2, 3, 4, and 5, respectively. , Test Example 6, was carried out in the same manner as in Test Example 7 and the results are shown in Tables 3 and 4.

Test Example 1 Detergency Test

In order to determine the cleaning power of the shampoo prepared by the method of Example 1-3 and Comparative Example 1-6 was performed as follows. In this case, when the washing power test was performed directly on the hair, it was difficult to objectify the test results, and the color difference after washing with shampoo by treating red artificial oily contamination on the wool fabric having a structure similar to hair was compared.

In other words, cut wool to 5 cm × 5 cm and use artificial sebium (Sebum) ("Chemical and Physical Behavior of Human Hair", 3rd Edition, p. 80, CR Robbins, Springer-Verlag, New York (1994). )) And by means (III) (sudan III), contaminated, washed with water and dried. The color of the contaminated wool was measured using a color difference meter. Then, 5 pieces of wool cloth were added to each shampoo solution, and then washed for 5 minutes, and then washed with water for 1 minute and dried. The dried wool was measured for color using a colorimeter and then the average value was obtained. The operation was repeated four times to obtain a color difference between the initial color and the color after four treatments, and the results are shown in Table 3 below.

In Table 3, ΔE is the color difference measurement of wool before treatment with shampoo solution minus the color difference measurement of wool after treatment with shampoo solution four times. Therefore, the larger the value, the better the cleaning power.

Experimental Example 2: Conditioning Effect Experiment

Thirty-five women with experience in sensory evaluation of hair products were subjected to trituration with shampoos prepared by the methods of Examples 1-3 and Comparative Examples 1-6 using conventional shampoos, followed by towel drying and natural drying. . The evaluation method was given to the following evaluation criteria as shown in Table 2, the hair texture and the ease of combing after using the product as a conditioning effect score was to give a comprehensive absolute evaluation. The results are shown in Table 3 below.

TABLE 2

Test Example 3 Bubble Test

Samples prepared in Examples 1-3 and Comparative Examples 1-6 were used to measure the foaming power of each shampoo composition three times using a Ross-Miles foaming force measurement method to confirm reproducibility and to obtain an average thereof. The results are shown in Table 3 below.

TABLE 3

As shown in Table 3, it can be seen that the cleaning power, conditioning effect and foaming power of the shampoo prepared by the method of Example 1-3 is very superior to the shampoo prepared by the method of Comparative Example 1-6.

Test Example 4: Two-phase mixing ease experiment

100 ml of the shampoo prepared as in Example 1-3 and Comparative Example 1-6 were added to a 200 ml measuring cylinder and mixed up and down to measure the number of times until the two phases were completely mixed. Ease of use and the results are shown in Table 5.

Test Example 5: Two-phase re-separation experiment

100 ml of the shampoo prepared as in Example 1-3 and Comparative Example 1-6 were added to a 200 ml measuring cylinder, and then mixed up and down 100 times to measure the time taken until the volume of the initial oil phase was ½. The time was two phase re-separation ease and the results are shown in Table 5 below.

Test Example 6 Viscosity Test After Two-Phase Mixing

After the shampoos prepared in Examples 1-3 and Comparative Examples 1-6 were left at 25 ° C. for 1 day, the mixture was turned up and down 100 times and mixed, and then the viscosity was measured. Table 5 shows.

Test Example 7 Flow Test after Mixing of Two Phases

After the shampoo prepared in Example 1-3 and Comparative Example 1-6 were left at 25 ° C. for 1 day, the mixture was turned up and down 100 times, and then mixed with 35 people to evaluate the usability of the viscosity. To give a score by the evaluation criteria of Table 4 below after the two-phase mixing to flow and the results are shown in Table 5 below.

TABLE 4

TABLE 5

As shown in Table 5, the shampoo prepared by the method of Example 1-3 is slightly less easy to mix the two phase than the comparative example, the two-phase re-separation rate compared to the shampoo prepared by the method of Comparative Example 1-6 It can be seen that excellent. In addition, the viscosity of the shampoo after the two-phase mixing is suitable, it is convenient to use because of excellent flowability after two-phase mixing.

As described above, the two-phase separation shampoo composition of the present invention is very excellent in the conditioning effect, the two-phase separation rate is fast and does not flow down during use, it is convenient to use.

Claims (4)

(a) 5 to 25 weight percent of anionic surfactants; (b) 0.1 to 20.0 weight percent of hair conditioning agent; (C) 0.1 to 2.0 wt% emulsifier; (d) 3 to 10 weight percent of a water soluble inorganic salt; And (e) 0.1 to 2.0 wt% starch Including, The anionic surfactant (a) includes an anionic surfactant to which ethylene oxide is not added, including sodium lauryl sulfate, ammonium lauryl sulfate, and lauryl sulfate triethanolamine; And an anionic surfactant added with ethylene oxide, including polyoxyethylene lauryl sulfate, polyoxyethylene lauryl ammonium sulfate, and polyoxyethylene lauryl sulfate triethanolamine, (B) the hair conditioning agent includes a silicone component including cyclometicone, polydimehylsiloxne, amodimethicone, and phenyltrimehicone; And an oil component comprising isopropyl myristin, isopropyl palmitate, isostearic acid isostearyl, and C _12-15 alkyl benzoate, liquid oil, and isoparaffin. , The (c) emulsifier is sorbitan monolaurate, sorbitan monoolete, polyethylene oxide-5 sorbitol oleate, and glycerol monostearate At least one selected from the group consisting of (D) The water-soluble inorganic salt is one or more selected from the group consisting of sodium chloride, sodium nitrate, sodium bromide, potassium chloride, and potassium bromide Two phase separation conditioning composition. The method of claim 1, Wherein (a) the anionic surfactant is an anionic surfactant not added ethylene oxide and an anionic surfactant added ethylene oxide is mixed in a weight ratio of 1: 1 to 3: 1. The method of claim 1, Wherein (b) the hair conditioning agent is a two-phase separation conditioning composition in which the silicone component and the oil component is mixed in a weight ratio of 1: 1 to 3: 1. The method of claim 1, The emulsifier is a lipophilic emulsifier having a HLB value of 2 to 10 two-phase separation conditioning composition.