KR101940051B1 - Low-irritant sulfate-free shampoo composition minimizing decoloration of dye hair - Google Patents

Abstract

The present invention relates to a sulfate-prushamp composition which does not contain a sulfate anionic surfactant. The present invention provides a shampoo composition which does not contain a sulfate system and which minimizes damage to the hair and dripping out of the hair dye (discoloration).

Description

LOW-IRRITANT SULFATE-FREE SHAMPOO COMPOSITION MINIMIZING DECOLORATION OF DYE HAIR [0001] This invention relates to a low-irritation sulfate-free shampoo composition that minimizes color-

The present invention relates to a sulfate-free shampoo composition which does not contain a sulfate type surfactant, and more particularly to a sulfate-free shampoo composition which does not contain a sulfate surfactant, Free shampoo composition which is capable of minimizing bleeding (color dropout).

Generally, the shampoo composition comprises a surfactant as a main component. And additives such as an antiseptic and an antiseptic, and the remaining amount is constituted by water. As the surfactant, anionic surfactant is basically used for washing power and foaming power. In addition, a nonionic surfactant may be further used for solubilizing and emulsifying dispersing function.

At this time, a sulfate type is essentially used as the surfactant. Specifically, in preparing (formulating) a conventional shampoo composition, a sulfate-based agent is essentially contained as an anionic surfactant. For example, as disclosed in Korean Patent Laid-Open No. 10-2009-0056321, a sulfate system such as ammonium lauryl sulfate or ammonium laureth sulfate is used, or Korean Patent No. 10-0845393 and Korean Patent Laid- Sulfuric acid such as sodium lauryl sulfate is used as disclosed in, for example, Japanese Patent Application Laid-Open No. 2002-0082931. Such sulfate anionic surfactants are superior to other anionic surfactants in terms of detergency and bubble power, and are useful in shampoo compositions.

However, the sulfate system promotes the damage of the hair due to the strong stimulation and accelerates the water dropout (color dropout) of the hair (dyeing hair) particularly dyed with excessive washing power.

Korean Patent Publication No. 10-2009-0056321 Korean Patent No. 10-0845393 Korean Patent Publication No. 10-2010-0082931

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a sulfate-free shampoo composition which does not contain a sulfate-based surfactant, and which can minimize the damage of hair or water dropout (discoloration) Sulfate-free shampoo composition.

To achieve the above object, the present invention provides a sulfate-free shampoo composition containing no sulfate surfactant, wherein the sulfate-free shampoo composition contains at least one selected from the group consisting of an anionic surfactant and an amphoteric surfactant.

The anionic surfactant may be at least one selected from a sulfosuccinate type surfactant, sodium cocoyl isethionate, sodium methylcocoyl taurate, sodium lauroyl succinate and sodium lauryl sulfoacetate. The amphoteric surfactant is preferably a beta-phosphorous having COO < ^- > at the anionic side.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to minimize the damage of the hair or the coloring of the dye coat (color dropout) due to the absence of the sulfate system.

FIGS. 1 to 3 are graphs showing the results of water dropout (color dropout) evaluation of hair treated with the shampoo composition according to Examples and Comparative Examples of the present invention.
4 is a SEM photograph of hair treated with the shampoo composition according to Examples and Comparative Examples of the present invention.
5 is a graph showing the tensile strength evaluation results of hair treated with the shampoo composition according to Examples and Comparative Examples of the present invention.

Hereinafter, the present invention will be described in detail.

The shampoo composition according to the present invention is a sulfate-free composition containing a surfactant as usual as an active ingredient for detergency and not containing a sulfate anionic surfactant in a surfactant.

Specifically, the shampoo composition according to the present invention contains at least one selected from the group consisting of an anionic surfactant and an amphoteric surfactant, and the anionic surfactant except for the sulfate group is used. The anionic surfactant may be at least one selected from, for example, a sulfosuccinate type, sodium cocoyl isethionate, sodium methylcocoyl taurate, sodium lauroyl sarcosinate and sodium lauryl sulfoacetate. have. At this time, the sulfosuccinate system may be selected from disodium lauryl sulfosuccinate and disodium laureth sulfosuccinate.

The anionic surfactant may be contained in an amount of 1 to 40% by weight based on the total weight of the shampoo composition according to the present invention. If the content of the anionic surfactant is less than 1% by weight, the washing power and the foaming power may be insignificant. If the content is more than 40% by weight, the hair may be irritating to the scalp and have high viscosity. Considering this point, the anionic surfactant is preferably contained in an amount of 5 to 30% by weight.

The ampholytic surfactant is preferably selected from the betaine type. The betaine system is both ionic and not limited as long as it has COO < ^- > at the anionic side. Such betaine systems include, for example, cocamidopropyl betaine, coco-betaine, cocodimethylcarboxymethylbetaine, lauryldimethylcarboxymethylbetaine, lauryldimethyl- alpha-carboxyethylbetaine, cetyldimethyl- Betaine, lauryl-bis- (2-hydroxyethyl) carboxymethylbetaine, stearyl-bis- (2-hydroxypropyl) carboxymethylbetaine, oleyldimethyl- (2-hydroxypropyl) alpha-carboxyethyl betaine, coco dimethyl sulfopropyl betaine, stearyl dimethyl sulfopropyl betaine, cocoamidodimethyl carboxymethyl betaine, cocoamidodimethyl sulfopropyl betaine, lauryl Amido dimethyl carboxymethyl betaine, cetylamido dimethyl carboxymethyl betaine, and stearylamido dimethyl sulfopropyl betaine. Among them, it is preferable to use at least one selected from the group consisting of cocamidopropyl betaine and coco-betaine.

The structural formula of cocamidopropyl betaine is shown in the following formula (1). The betaine system that can be used in the present invention may be any one having COO ^- at the anion side end as shown in the following formula (1).

[Chemical Formula 1]

In the above formula (1), R is hydrogen or a hydrocarbon. When R in the formula (1) is a hydrocarbon, it may be selected from, for example, an alkyl group or an aryl group.

According to a preferred form, the shampoo composition according to the present invention preferably contains at least one anionic surfactant selected from anionic surfactants other than a sulfate-based surfactant and a betaine-based amphoteric surfactant. Specifically, it is preferable that both the anionic surfactant and the betaine-based amphoteric surfactant listed above are contained simultaneously. In this case, the foaming power is improved by the betaine system while securing the washing power by the anionic surfactant as listed above.

The betaine system is not particularly limited, but may be contained in an amount of 0.1 to 30% by weight based on the total weight of the shampoo composition of the present invention. At this time, if the content of the betaine is less than 0.1% by weight, the effect of improving the foaming power may be insignificant. When the content of the betaine exceeds 30% by weight, the synergistic effect of excessive use is not so large, which may be undesirable in terms of cost. Taking this into consideration, it is preferable that the betaine system is contained in an amount of 0.5 to 20% by weight based on the total weight of the shampoo composition according to the present invention.

In addition, the shampoo composition according to the present invention may contain an anionic surfactant and a betaine system at the same time as the anionic surfactant and the betaine system in a weight ratio of 1: 0.1-10.0 (anionic surfactant: betaine system = 1 : 0.1 to 10.0 by weight). When the composition is formed at such a weight ratio, bubble power can be obtained with excellent cleaning power.

In addition, the shampoo composition according to the present invention may further contain a non-ionic surfactant for auxiliary of detergency, solubilization, and emulsifying and dispersing function. The nonionic surfactant is not particularly limited, but may be selected from, for example, sorbitan, amides, amines and derivatives thereof. Specific examples of the nonionic surfactant include sorbitan monooleate, sorbitan monolaurate, lauryldiethylamine oxide, palm oil alkyldimethylamine oxide, palm oil fatty acid diethanolamide, palm oil fatty acid monoethanolamide, cocoamide Diethanolamine, derivatives thereof, and the like. Such a nonionic surfactant may be contained in an amount of 0.1 to 20% by weight based on the total weight of the shampoo composition according to the present invention. If the content of the nonionic surfactant is less than 0.1% by weight, the detergency may be insufficient depending on the content of the nonionic surfactant, solubilization and emulsifying and dispersing functions. If the content of the nonionic surfactant is more than 20% by weight, the viscosity may be increased.

In addition, the shampoo composition according to the present invention may contain additives conventionally used in the art. For example, one or more additives selected from preservatives, perfumes, pH adjusting agents, viscosity controlling agents, moisturizing agents, conditioning agents, and bactericides, and the like. Such additives may be contained in the range of, for example, 0.001 to 10% by weight, depending on the kind of each additive, based on the total weight of the shampoo composition according to the present invention. And the remaining amount is water (such as purified water). In addition, in addition to the above-mentioned additives, a solvent such as an alcohol or a ketone, a herbal medicine extract, a fruit extract, a vitamin and a pigment may be selectively contained.

The preservative may be selected from the group consisting of p-hydroxybenzoic acid methyl, paraoxybenzoic esters, methylparaben, methylchloroisothiazolinone, methylisothiazolinone, and the like. The perfume can be selected from the group consisting of natural flavors (fruit flavor, herb flavor, ) Or a combination flavor. The pH adjusting agent may be selected from inorganic acids, organic acids and salts thereof, and may be selected from, for example, citric acid, sodium citrate, phosphoric acid, sodium phosphate and sodium phosphate.

The viscosity modifier may be selected from the group consisting of carboxyvinyl polymer, glycols (such as propylene glycol) and oils (including natural oils such as coconut oil, And vegetable oils), and the like. And the conditioning agent may be selected from lanolin alcohol, polyoxyethylene lanolin, polyquaternium-7, polyquaternium-10 and ethylene glycol monostearate, and the fungicide may be selected from the group consisting of chlorohexadine, triclosan, And the like.

According to the present invention described above, a sulfate-free composition containing no sulfate anionic surfactant does not contain a sulfate system, thereby minimizing the damage of the hair and the coloring of the dye coat. When the anionic surfactant and the betaine-based amphoteric surfactant as described above are contained at the same time, they have bubble power with excellent detergency.

Hereinafter, examples and comparative examples of the present invention will be exemplified. The following examples are provided for illustrative purposes only and should not be construed as limiting the technical scope of the present invention.

[Examples and Comparative Examples]

A wash-off type shampoo formulation was prepared with the ingredients and contents as shown in Table 1 below.

At this time, the control group was prescribed by mixing only fragrance and preservative in water without using surfactant. As the surfactant, in the case of the comparative example, the sulfate-based (ammonium lauryl sulfate and ammonium laureth sulfate) most commonly used in the prior art was used. In the case of the examples, a sulfate system was not used, and a sulfosuccinate system (disodium lauryl sulfosuccinate and disodium laureth sulfosuccinate) and a betaine system (cocamidopropyl betaine) were used. In order to accurately compare the damage of the hair and the water dropout (discoloration), the total amount of the surfactant was used in the same manner as in Example and Comparative Example at 18 wt%.

          ≪ Composition of shampoo composition > ingredient Control group Comparative Example
(Sulfate) Example
(Sulfate-free)



Surfactants Ammonium lauryl sulfate
(Ammonium lauryl sulfate) - 6 - Ammonium laureth sulfate
(Ammonium laureth sulfate) - 6 - Disodium lauryl sulfosuccinate
(Disodium Lauryl Sulfosuccinate) - - 6 Di-sodium laureth sulfosuccinate
(Disodium Laureth Sulfosuccinate) - - 6 Cocamidopropyl betaine
(Cocamidopropyl betaine) - 6 6 Spices Mint flavor 0.5 0.5 0.5 antiseptic Paraoxybenzoic ester 0.2 0.2 0.2 water Purified water To 100 To 100 To 100

≪ Evaluation of water dropout (color dropout) >

For each of the above shampoo compositions, color discontinuity was evaluated with respect to white moth, sachet, and discoloration.

(1) Dyeing was performed with a natural brown (4N) hair dye and a white hair tress (white dyed hair).

(2) The second decolorized decolorized hair was stained with 7.55X (red blond) hair dye.

(3) Each of the above-mentioned shampoo compositions was shampooed (washed) for 1 minute with the above-mentioned dyed white moths, moths and decolorized moths.

(4) In the case of the control group, the mixture was mixed with tap water, and each of the tress hairs was carried for 1 minute.

(5) Rinsing was sufficiently carried out until the water flowing through each of the above-mentioned traces of hair did not foam for 30 seconds or more.

(6) After drying for 2 minutes with a dryer, brightness values (L, a, b) of each of the tress hairs were measured using a color difference meter. At this time, each of the traces of hair was measured after 1 time, 5 times, and 10 times of shampooing treatment, and the results are shown in the following Table 2 and FIG. 1 to FIG. 3 attached hereto. Fig. 1 shows the result of the mock-up, Fig. 2 shows the result of white moth, and Fig. 3 shows the result of decolorization (dyeing mock).

The results shown in the following [Table 2] and the accompanying figures 1 to 3 are delta values (DELTA values) obtained by comparing differences between values before and after shampooing. At this time, in the case of the mother-of-pearl and white moth, since the hair was dyed in the black color system, the comparison of the L value among the brightness values (L, a, b) can be compared with how much the hair became brighter after shampooing. (E = (L ^ 2 + a ^ 2 + b ^ 2) ^ (1/2)], which is the total change in color before and after shampooing,

          <Result of water dropout (color dropout)> Remarks One wash 5 times cleaning 10 times cleaning

Schoimo
(L *) Control group
(controll) 0.3 0.98 1.06 Example
(Sulfate-free) 0.34 1.21 1.44 Comparative Example
(Sulfate) 1.82 2.27 2.62

White moth
(L *) Control group
(controll) -0.48 1.03 1.43 Example
(Sulfate-free) 1.21 1.82 3.49 Comparative Example
(Sulfate) 2 3.05 4.09

Decolorization
(E *) Control group
(controll) -1.14 1.32 1.321596 Example
(Sulfate-free) 1.28 1.84 1.897696 Comparative Example
(Sulfate) 2.73 2.50 2.813447

As shown in the above Table 2 and the accompanying Figures 1 to 3, the shampoo according to the comparative example (sulfate) in the case of the cheek moth is about twice as many as the example (sulfate-free) . This means that the larger the delta value (? Value), the greater the change in the L value. This means that there is more color missing.

Also, in the case of white moth, the shampoo according to the comparative example (sulfate) showed a larger change value. In addition, in the decolorization simulation, the shampoo according to the example (sulfate-free) changed color to a degree similar to that of the control group (almost rinsed with water only), but in the case of the shampoo according to the comparative example (sulfate) I could confirm.

<Evaluation of hair damage>

The degree of hair damage was evaluated for each of the above shampoo compositions as follows.

(1) Normal hair tress (manufactured directly using human hair) was shampooed (washed) with 1 g of each of the above shampoo compositions for 1 minute.

(2) Rinsing was sufficiently carried out until the water flowing through each of the above-mentioned traces of hair did not foam for 30 seconds or more.

(3) After drying for 2 minutes with a dryer, a scanning electron microscope (SEM) photograph and a tensile strength of the hair were measured. At this time, each of the traced hairs was treated after shampooing 1 time, 10 times, and 30 times.

SEM In the photograph, the surface of each of the traced hairs was magnified 600 times to confirm damage of the haircuticle. The results are shown in the attached FIG. In the attached photograph of FIG. 4, the uppermost line indicates that the control has not been subjected to anything (that is, the initial hair that has not been cleaned), and the middle line is the shampoo according to the comparative example (sulfate) , 30 times, and the bottom three lines were treated with shampoo according to the embodiment (sulfate-free), once, 10 times, and 30 times from the left.

The cuticle of the hair is layered in the shape of a tapered shape, and the more the cuticle is damaged, the more the cuticle layer is not arranged. As shown in the attached photograph of FIG. 4, in the case of the shampoo according to the comparative example (sulfate), the haircut cuticle started to vigorously start to be felt after 10 treatments, and when it was treated 30 times, the cuticle layer was damaged. On the other hand, in the case of the shampoo according to the example (sulfate-free), it was found that the damage of the cuticle layer was hardly observed even after 10 treatments. After 30 treatments, the cuticle layer began to become slightly worn and damaged.

The tensile strength was evaluated by the required strength (g / cm &lt; 2 &gt;) until each hair was pulled at a constant speed while the hair was broken. The higher the tensile strength value, the less intact healthy hair. At this time, since there is a deviation (variation in hair thickness and intensity) per hair, 10 shreds of hair treated with each shampoo are arbitrarily taken and measured, and an average value of the ten shreds is shown in [Table 3] Respectively. 5, the y-axis is the tensile strength and the control in the x-axis is the one that has not been subjected to anything (i.e., the initial hair that has not been cleaned). And S is the result after one time (S1), 10 times (S10) and 30 times (S30) treatment with shampoo according to the comparative example (sulfate), SF is one time with shampoo according to the example (sulfate- (SF1), 10 times (SF10), and 30 times (SF30).

          <Tensile Strength Evaluation Results> control Comparative Example (Sulfate) Example (sulfate-free) S1 S10 S30 SF1 SF10 SF30 137.4 103 92 86 115 106.6 98.8

As shown in Table 3 and attached FIG. 5, it was found that hair was broken by applying a force of about 140 (g / cm 2) in the case of control. In the case of shampoo according to the comparative example (sulfate), the tensile strength of the hair was greatly decreased even when it was treated only once. However, it was confirmed that the shampoo according to the example (sulfate-free) was treated only 30 times, but the shampoo of the comparative example (sulfate) was treated only once, and the hair was not greatly damaged.

Claims (3)

Free shampoo composition comprising a surfactant consisting of an anionic surfactant and an amphoteric surfactant,
Wherein the anionic surfactant is disodium lauryl sulfosuccinate and disodium laureth sulfosuccinate,
Wherein the amphoteric surfactant is cocamidopropyl betaine. &Lt; RTI ID = 0.0 &gt; 15. &lt; / RTI &gt;
delete The method according to claim 1,
Wherein the anionic surfactant and the zwitterionic surfactant are contained in a weight ratio of 1: 0.1 to 10.0.

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