WO2019156484A1 - Transparent low-viscosity composition for hair conditioning - Google Patents

Abstract

The present invention relates to a hair conditioning composition comprising (a) dipropylene glycol solvent, (b) a cationic surfactant, and (c) at least one C₁₂-C₂₂ fatty alcohol, the hair conditioning composition having a transparent appearance of low-viscosity, facilitating application, and being capable of being prepared without a low grade alcohol such as ethanol while having a smooth appearance, thereby causing no concern for skin irritation, scalp/hair dryness and the like.

Description

Transparent low viscosity hair conditioning composition

The present invention relates to a hair conditioning composition comprising (a) a dipropylene glycol solvent, (b) a cationic surfactant, and (c) at least one fatty alcohol having a carbon in the range of C ₁₂ -C ₂₂ .

Hair conditioning is necessary to compensate for dry, stiff hair by removing excess sebum after washing the hair with a detergent. However, the conventional hair conditioning products are mainly made of a high viscosity cream form product consisting of water, higher alcohol, cationic surfactant. These products take time and energy to melt, emulsify and cool again for manufacturing. In addition, the cream has a high viscosity and has a uniform uniform appearance, and has a disadvantage that it does not quickly spread or absorb due to the high viscosity when applied to the hair.

In order to solve this problem, applications such as Nos. 10-2001-0080793 and 10-2004-0048734 have been proposed. However, these compositions contain a large amount of lower alcohols such as ethanol as a solvent, which may cause skin irritation, scalp and hair drying, etc. Concerns still exist.

The inventors of the present invention have invented a new composition having a low-viscosity, transparent appearance, which is easy to apply and has a beautiful appearance, and can be produced without lower alcohols such as ethanol, without causing skin irritation or scalp / hair drying. .

One object of the present invention is to provide a hair conditioning composition comprising (a) a dipropylene glycol solvent, (b) a cationic surfactant, and (c) at least one fatty alcohol having a carbon in the range of C ₁₂ -C ₂₂ . To provide.

Another object of the invention is the use of hair conditioning in a composition comprising (a) a dipropylene glycol solvent, (b) a cationic surfactant, and (c) at least one fatty alcohol having a carbon in the range of C ₁₂ -C _22. To provide.

Still another object of the present invention is to provide a method for producing a transparent low viscosity hair conditioner by heating the composition for hair conditioning.

The hair conditioning composition of the present invention has a low viscosity and transparent appearance, is easy to apply and has a beautiful appearance, and can be manufactured without lower alcohol such as ethanol, so that there is no fear of skin irritation or scalp / hair drying.

Figure 1 shows the properties of the prepared Example 1 and Comparative Examples 1 to 3.

2 a to i show the properties of the prepared Example 3 and Comparative Examples 6 to 13.

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

Meanwhile, each of the descriptions and the embodiments disclosed herein may be applied to each of the other descriptions and the embodiments. That is, all combinations of the various elements disclosed herein are within the scope of the present invention. In addition, the scope of the present invention is not limited by the specific description described below.

In addition, one of ordinary skill in the art can recognize or identify numerous equivalents to certain aspects of the invention described in this application using conventional experiments only. Also, such equivalents are intended to be included in the present invention.

One aspect of the present invention for solving the above problems is (a) a dipropylene glycol solvent, (b) a cationic surfactant, and (c) at least one having a carbon in the range of C ₁₂ -C ₂₂ It provides a composition for hair conditioning, including fatty alcohol.

Another aspect of the invention provides a composition comprising a composition comprising (a) a dipropylene glycol solvent, (b) a cationic surfactant, and (c) at least one fatty alcohol having carbon in the range of C ₁₂ -C ₂₂ . Provides hair conditioning applications.

The present invention also provides a composition for hair conditioning comprising (a) a dipropylene glycol solvent, (b) a cationic surfactant, and (c) at least one fatty alcohol having carbon in the range of C ₁₂ -C _22. It provides a hair care method comprising the step of applying to the hair.

Specifically, (a) dipropylene glycol is used as a solvent. Dipropylene glycol may be referred to herein as Dipropylene glycol or DPG. Dipropylene glycol is any one or more selected from the group of compounds represented by the following formulas (1) to (3). The solvent may have a good solubility in higher alcohols involved in viscosity formation so that the higher alcohol molecules do not become large enough to form a network, but exist in a dissolved state.

[Formula 1]

[Formula 2]

[Formula 3]

.

In one experimental example of the present invention, when dipropylene glycol is used as a solvent, it is easy to prepare a transparent conditioning composition having low viscosity without irritation on the skin as compared to when using other polyol solvents such as glycerin or butylene glycol. Confirmed. In particular, the composition of the present invention using dipropylene glycol as a solvent has excellent hair moisturizing effect after drying, and has low skin irritation to prevent itching of the scalp.

Dipropylene glycol may be used at 0.1 to 99% by weight based on the total composition. Specifically, 10 to 99% by weight, 30 to 99% by weight, or 50 to 99% by weight can be used. More specifically, 70 to 99% by weight, 80 to 99% by weight, or 90 to 99% by weight can be used. In one embodiment of the invention DPG was used by 90%, 95.2% or 95.5% by weight relative to the total composition weight.

The composition for conditioning of the present invention does not contain water and thus can contain a large amount of oil-soluble conditioning components such as higher fatty alcohols while maintaining a transparent low viscosity property. In addition, since it does not contain lower alcohol, skin irritation or drying of the scalp and hair by lower alcohol such as ethanol does not appear.

That is, the composition for conditioning of the present invention is an active ingredient of at least one fatty alcohol having (a) a dipropylene glycol solvent, (b) a cationic surfactant, and (c) a carbon in the range of C ₁₂ -C _22. It may include. In particular, it may include only dipropylene glycol as the solvent component. However, excipients or flavors that do not affect the active ingredient may be additionally included.

In addition, the composition for conditioning of the present invention contains (b) a cationic surfactant as a conditioning component.

The cationic surfactant includes a quaternary ammonium salt having the following structural formula 1.

[Formula 1]

_{[R 1 R 2 R 3 R} 4 N] + X -

(Wherein R _1, R ₂ , R ₃ , R ₄ may be the same or different, respectively.)

One higher alkyl having R usually has 10 to 30 carbons, and the other three lower alkyls have 1 to 4 carbons.

Quaternary ammonium salts with two higher alkyls consist of lower alkyl with two R having 10 to 30 carbons and the remaining two R having 1 to 4 carbons.

Quaternary ammonium salts having three higher alkyls have three R groups having 10 to 30 carbons, and one alkyl group consists of lower alkyl having 1 to 4 carbons.

X is a salt-forming anion that is halogen (e.g. chlorine, bromine), acetate, citrate, lactate, glycolate, phosphate nitrate, sulfate, alkylsulfate radicals and the like. Lower alkyl usually has 1 to 3 or 4 carbon atoms, specifically 1 or 2 carbon atoms, more specifically methyl, and higher alkyl has 10 to 30 carbon atoms, specifically 12 to 22 carbon atoms. Carbon atoms, more specifically 14 to 22 carbon atoms. The anion is specifically halogen, such as chlorine, bromine or iodine, more specifically chlorine or bromine.

Specifically, the number of lower alkyls is two or three, and the number of higher alkyls is one or two.

More specifically, as the quaternary ammonium compound as the cationic surfactant, for example, alkyl (C ₁₄ -C ₂₂ ) trimethyl ammonium chloride, dialkyl (C ₁₄ -C ₂₂ ) dimethyl ammonium chloride, hydrogenated tallow alkyl trimethyl ammonium Chloride, ditallow alkyl dimethyl ammonium chloride and the like can be used.

In addition, the cationic surfactant includes a tertiary amidoamine salt represented by the following formula.

R ¹ CONH (CH ₂ ) _m N (R ² ) ₂

In the above formula, R ¹ is a fatty acid residue having 11 to 23 carbon atoms, R ² is an alkyl group having 1 to 4 carbon atoms, m is an integer of 1 to 4. Examples of such amidoamine compounds include cocamidopropyldimethylamine, stearamidopropyldimethylamine, behenylamidopropyldimethylamine, and the like, which may be used alone or in combination.

 Such amidoamine compounds are used in the form of neutralized with acid in the present invention. If it is not neutralized with acid, the pH may be high, resulting in poor hair conditioning effects and coarse hair. Formic acid, formic acid, acetic acid, propionic acid, butyric acid, glutamic acid, aspartic acid, citric acid, ascorbic acid, benzoic acid, fumaric acid, maleic acid, succinic acid, bromic acid, lactic acid, etc. Or it can mix and use, but it is not limited to this. The neutralizing agent is preferably used in the same equivalent ratio as the amine content of the amidoamine compound.

These cationic surfactants are necessary to give the hair a conditioning effect. In the present invention, 0.1 to 20% by weight, specifically 0.1 to 10% by weight, 0.1 to 5% by weight, or 5 to 20% by weight, based on the total weight of the total composition, may be used alone or by mixing two or more kinds of the cationic surfactant. have. More specifically, 0.5 to 3% by weight, 0.5 to 2, or 0.5 to 1.5% by weight may be used. If it is contained less than the above amount, the hair conditioning effect is insignificant, and if it is contained more, there is a possibility of precipitation or skin irritation. In one embodiment of the present invention, 1 wt% of stearamidopropyldimethylamine or stearyltrimonium chloride was used based on the total weight of the composition.

In addition, the conditioning composition of the present invention (c) at least one fatty alcohol having a carbon in the range of C ₁₂ -C ₂₂ . The fatty alcohol may have a linear or branched alkyl group or alkenyl group. The fatty alcohol may specifically have a carbon in the range of C ₁₄ -C ₁₈ .

Such fatty alcohols may be used in an amount of 0.1 to 20% by weight, 0.1 to 10% by weight, or 0.3 to 5% by weight based on the total weight of the total composition. More specifically, 0.5 to 5% by weight or 1 to 5% by weight may be used. If less than the above content is used, there is a possibility that the hair softening effect is lowered, and if more is used, it is precipitated and may not achieve a uniform phase. In one embodiment of the present invention, 3% by weight of C _16-18 fatty alcohol was used based on the total weight of the composition.

The composition for conditioning of the present invention may include, in addition to the above components, hair-conditioning components such as silicone, oil, polymers, ancillary solvents such as water, adjusters such as pH adjusting agents, and flavoring agents. The components may be used in the range of less than 5% by weight, and the sum of these components is usually used in the range of 5 to 10% by weight.

The silicone imparts a conditioning effect to the hair, and may be any kind contained in a conventional hair conditioner. For example, silicone to which a water-soluble residue is added, such as PEG-12 dimethicone, can be used.

Another aspect of the present invention for solving the above problems, provides a method for producing a transparent low viscosity hair conditioner comprising the step of heating and dissolving the composition for conditioning.

Specifically, by heating at a relative low temperature of 40 to 70 ℃, it can be prepared in a transparent low viscosity hair conditioner without the addition of water.

As used herein, "low viscosity" hair conditioner is specifically meant to exhibit 100 cPs or less as measured by a Brookfeild viscometer which is widely used in the art to determine viscosity.

The conditioner of the present invention prepared as described above is a form of washing, characterized in that after washing the hair with a rinsing agent such as shampoo and then applied to the hair to massage and wash.

Hereinafter, the present invention will be described in more detail with reference to the following examples. However, the following examples are only for illustrating the present invention and the scope of the present invention is not limited thereto.

1. Preparation Example 1-Preparation of Example 1 and Comparative Examples 1 to 3

Example 1 using DPG as a solvent and Comparative Examples 1 to 3 using other polyol solvents were prepared to have the contents shown in Table 1 below. The materials used were all purchased from commercially available products.

%	Example 1	Comparative Example 1	Comparative Example 2	Comparative Example 3
DPG	To 100
Butylene Glycol			To 100
Propylene glycol			To 100
glycerin				To 100
C16-18 Fatty Alcohol	3	3	3	3
Stearamidopropyl Dimethylamine	One	One	One	One
Lactic acid	0.3	0.3	0.3	0.3
Spices	0.5	0.5	0.5	0.5

All examples and comparative examples are listed in weight percent.

All ingredients except perfume were added to a beaker and warmed to 60 degrees to confirm mixing and dissolution, and then cooled to room temperature. The fragrance was further added below 40 degrees.

2. Experimental Example 1-Property comparison of Example 1, and Comparative Examples 1 to 3

Example 1 of the above Examples and Comparative Examples formed a transparent low viscosity liquid phase (A of FIG. 1), but Comparative Examples 1 and 2 were in the form of a semi-transparent gel having a high viscosity (B and C of FIG. 1, respectively). Example 3 formed an opaque milky cream form with a very high viscosity (FIG. 1D).

 Therefore, it was confirmed that the present invention using DPG has a transparent appearance and a low viscosity to provide a formulation having excellent stability and spreadability and good absorbency when applied to hair.

3. Preparation Example 2-Preparation of Examples 1 and 2, and Comparative Examples 4 and 5

In order to make a comparative composition having a transparent low viscosity similar to the present invention, Comparative Examples 4 and 5 to which ethanol was added were prepared. In addition, Example 2 using stearyltrimonium chloride instead of the stearamidopropyldimethylamine of Example 1 was prepared. Specific content of each component is shown in Table 2 below.

%	Example 1	Example 2	Comparative Example 4	Comparative Example 5
DPG	To 100	To 100
Butylene Glycol				To 100	To 100
ethanol			50	50
C16-18 Fatty Alcohol	3	3	3	3
Stearamidopropyl Dimethylamine	One		One
Stearyltrimonium chloride		One		One
Lactic acid	0.3		0.3
Spices	0.5	0.5	0.5	0.5

The specific manufacturing method is the same as that of the manufacture example 1. These examples and comparative examples all had a transparent low viscosity liquid form.

4. Experimental Example 2-Comparison of feeling of use of the composition

Thirty women in their twenties and thirties were evaluated for feeling of use of the compositions of Examples 1 and 2 and Comparative Examples 4 and 5. The following evaluation items were surveyed and the evaluation criteria are as follows.

-Evaluation item: Soft at rinsing, Soft after drying, Moist after drying, Not scalp.

-Evaluation Criteria: Very Bad (1), Bad (2), Moderate (3), Good (4), Very Good (5)

The results are shown in Table 3 below.

	Example 1	Example 2	Comparative Example 4	Comparative Example 5
Soft when rinsing	3.5	3.7	3.4	3.4
Softness after drying	3.5	3.8	3.1	3.4
Moist after drying	3.7	3.6	2.8	3.0
Scalp is not itchy.	4.0	4.1	3.1	2.8

As a result, Examples 1 and 2 have excellent conditioning and moisturizing effects compared to Comparative Examples 4 and 5. In particular, it does not contain ethanol, so it has excellent hair moisturizing effect after drying and does not remove excessive sebum, so it can be seen that the scalp is less irritated.

5. Preparation Example 3-Preparation of Examples 1 and 3 and Comparative Examples 6 to 13

Examples 1 and 3 using DPG as a solvent in an amount of 90 to 99% by weight, and Comparative Examples 6 to 13 using the amount of DPG or less were prepared to have the contents of Table 4 below. Specific manufacturing method is the same as Preparation Example 1, and as a result, it is shown in Table 5 and Figure 2 a to i.

%	Example 1	Example 3	Comparative Example 6	Comparative Example 7	Comparative Example 8	Comparative Example 9	Comparative Example 10	Comparative Example 11	Comparative Example 12	Comparative Example 13
DPG	95.2	90	75.16	55.16	35.16	15.16	75.16	55.16	35.16	15.16
Butylene Glycol		5.2	20	40	60	80
Propylene glycol							20	40	60	80
C16-18 Fatty Alcohol	3	3	3	3	3	3	3	3	3	3
Stearamidopropyl Dimethylamine	One	One	One	One	One	One	One	One	One	One
Lactic acid	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3	0.3
Spices	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5

Example 3	Comparative Example 6	Comparative Example 7	Comparative Example 8	Comparative Example 9	Comparative Example 10	Comparative Example 11	Comparative Example 12	Comparative Example 13
Good	detach	detach	detach	detach	detach	detach	detach	detach

As a result, as can be seen in Table 5 and Figures 2 to 2, Examples 1 and 3 using a DPG as a solvent in a content of 90 to 99% by weight to form a transparent low-viscosity liquid (Fig. 1A and 2A to FIG. 2), and Comparative Examples 6 to 13 using DPG at less than 90% by weight were in the form of a highly viscous translucent gel or a highly viscous milky cream (FIG. 2 a to i).

In addition, Examples 1 and 3 using the DPG as a solvent in an amount of 90 to 99% by weight could be confirmed that the properties are not separated, but have a stable formulation, Comparative Examples 6 to 13 using a lower than the content After three days, the composition was confirmed to be separated, indicating that the formulation was unstable.

6. Experimental Example 3-Comparison of feeling of use of the composition

Thirty women in their twenties and thirties were evaluated for feeling of use of the compositions of Examples 1 and 3, and Comparative Examples 6 to 13. The following evaluation items were surveyed and the evaluation criteria are the same as in Experimental Example 2.

The results are shown in Table 6 below.

%	Example 1	Example 3	Comparative Example 6	Comparative Example 7	Comparative Example 8	Comparative Example 9	Comparative Example 10	Comparative Example 11	Comparative Example 12	Comparative Example 13
Soft when rinsing	3.5	3.5	3.5	3.6	3.7	3.7	3.6	3.5	3.5	3.5
Softness after drying	3.5	3.7	3.7	3.8	3.6	3.7	3.7	3.7	3.6	3.5
Moist after drying	3.7	3.7	3.7	3.7	3.8	3.9	3.5	3.5	3.4	3.3
Scalp is not itchy.	4.0	4.0	3.9	4.0	4.0	4.0	3.9	3.9	3.9	3.7

As a result, as can be seen in Table 6, Examples 1 and 3 using the DPG as a solvent in the content of 90 to 99% by weight can be confirmed that having a stable formulation while having an excellent conditioning and moisturizing effect there was.

On the other hand, Comparative Examples 10 to 13 using less than 90% by weight of DPG and containing propylene glycol, it was found that the moisturizing effect is reduced compared to Examples 1 and 3, the moisturizing effect is reduced, the formulation is also unstable I could see that.

In addition, Comparative Examples 6 to 9 using DPG in an amount of less than 90% by weight and including butylene glycol were not significantly different from Examples 1 and 3 in terms of sensory evaluation, but as described above, the formulation itself was unstable. It was confirmed that it is difficult to use as a composition for hair conditioning.

Taken together, it is confirmed that the composition having a DPG content of 90 to 99% by weight of the present invention has a very stable formulation, and at the same time has a good conditioning and moisturizing effect, making it suitable for use as a composition for hair conditioning. Could know.

From the above description, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. In this regard, the embodiments described above are to be understood in all respects as illustrative and not restrictive. The scope of the present invention should be construed that all changes or modifications derived from the meaning and scope of the following claims and equivalent concepts rather than the detailed description are included in the scope of the present invention.

Claims (8)

1. A composition for hair conditioning comprising (a) a dipropylene glycol solvent, (b) a cationic surfactant, and (c) at least one fatty alcohol having a carbon in the range of C ₁₂ -C ₂₂ .
2. The composition of claim 1, wherein the composition does not contain lower alcohol.
3. According to claim 1, wherein (a) dipropylene glycol is 90 to 99% by weight based on the total composition, the composition.
4. The composition of claim 1, wherein the dipropylene glycol is any one or more selected from the group of compounds represented by Formulas 1 to 3 below:

   [Formula 1]

   

   [Formula 2]

   

   [Formula 3]

   

   .
5. The composition of claim 1, wherein (b) the cationic surfactant is 0.1 to 20% by weight based on the total composition.
6. The composition of claim 1, wherein the cationic surfactant is a quaternary ammonium series cationic surfactant or tertiary amidoamine based cationic surfactant.
7. The composition of claim 1, wherein (c) is from 0.1 to 20% by weight, based on the total composition of at least one fatty alcohol having carbon in the range of C ₁₂ -C ₂₂ .
8. A method for producing a transparent low viscosity hair conditioner comprising the step of heating and dissolving the composition of any one of claims 1 to 7 at a temperature of 40 to 70 ℃.

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