KR101029665B1 - A hair conditioning composition in the form of aqueous emulsion - Google Patents

Abstract

The present invention is a cationic polymer having a crosslinked structure; High viscosity dimethicone gum; Dialkyl carbonates; And a hair conditioning composition in the form of an aqueous emulsion that is applied directly to the hair without the need for rinsing containing polysorbate. The composition of the present invention is not only excellent in the conditioning effect and the sustaining effect of the conditioning effect, but also excellent in the application of the hair to the hair without flowing down with a suitable viscosity and easy to use, and excellent in the stability of the formulation.

Aqueous Emulsion, Conditioning, Polyquaternium-37, Polysorbate, Dialkylcarbonate

Description

A hair conditioning composition in the form of aqueous emulsion

The present invention relates to a hair conditioning composition in the form of an aqueous emulsion which is applied directly to the hair without being washed away, specifically, a cationic polymer having a crosslinked structure; High viscosity dimethicone gum; Dialkyl carbonates; And a hair conditioning composition in the form of an emulsion in which the conditioning effect including the polysorbate and the sustaining effect of the conditioning effect are excellent, easy to use, and excellent in formulation stability.

Modern human hair is polluted by pollution, dust, etc., and is damaged by UV rays, frequent perm, hair dry, dyeing, and combing. Thus, there is an increasing demand from consumers for conditioning products that enhance the appearance and feel of hair and are easy to handle.

Conditioning agents containing high alcohol, surfactants, silicone oils, etc. are generally used as hair cosmetics that are applied directly to hair without being washed off.

Among the hair cosmetics applied directly to the hair without washing off, the aqueous emulsion-type hair cosmetics have ease of use because they remain less sticky after use, but have the disadvantage that the smoothness or softness of the hair after use falls over time. In addition, severely damaged hair has a problem in that it is difficult to realize sufficient hair feel, softness and shine.

In order to solve this problem, when the content of the silicone oil is increased, the applicability is lowered when the coating is applied, and the hairs may stick to each other so that the appearance of the hair may not be neat. In addition, the higher the oil content, the more difficult it is to maintain the stability of the emulsion.

US Patent No. 7,186,406 describes that blending high viscosity silicone copolymers in aqueous emulsions with associated thickeners improves the conditioning effect and overcomes adverse effects such as buildup upon repeated use. However, the persistence of softness is still low, and it is difficult to achieve sufficient softness in severely damaged hair.

Korean Patent No. 2008-0040974 proposes an oily base type hair conditioning composition having high softness and durability by using a high viscosity dimethicone gum and a low viscosity dimethicone or a cyclo dimethicone together. However, in the oily base type hair conditioning composition, oil-specific stickiness remains after use, which causes inconvenience to wash hands.

In order to solve the above problems, an object of the present invention is excellent in the sustaining effect of the conditioning effect and conditioning effect, it does not flow down when applied to the hair, good applicability and does not need to wash, easy to use, excellent formulation stability, aqueous emulsion form To provide a hair conditioning composition of.

The present invention to achieve the above object,

Any one monomer selected from the group consisting of dialkylaminoalkyl (meth) acrylates, quaternary ammonium salts of dialkylaminoalkyl (meth) acrylates and acid salts of dialkylaminoalkyl (meth) acrylates; And 0.5 to 10 parts by weight of the cationic polymer having a crosslinked structure formed of a crosslinking agent based on 100 parts by weight of the total composition.

0.1 to 5 parts by weight of a high viscosity dimethicone gum having a viscosity of 5,000,000 to 50,000,000 cPs at 25 ° C based on 100 parts by weight of the total composition;

0.1 to 5 parts by weight of dialkyl carbonate based on 100 parts by weight of the total composition; And

It provides a hair conditioning composition in the form of an aqueous emulsion containing polysorbate in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the total composition.

The dialkylaminoalkyl (meth) acrylate may be represented by the following formula (1):

[Formula 1]

(In the formula 1,

R ₁ , R ₂ , R ₅ , R ₆ are alkyl groups having 1 to 8 carbon atoms, preferably 1 to 5 carbon atoms,

R ₃ is an alkylene group having 1 to 8 carbon atoms, preferably 1 to 5 carbon atoms,

R ₄ is hydrogen or a methyl group.)

The crosslinking agent is methylenebisacrylamide, ethylene glycol, propylene glycol, butylene glycol, di (meth) acrylate, di (meth) acrylamide, cyanomethyl acrylate, vinyloxyethyl acrylate, vinyloxyethyl methacrylate , Solely selected from the group consisting of allylpentaerythritol, trimethylolpropanediallyl ether, allyl sucrose, butadiene, isoprene, 1,4-diethylenebenzene, divinylnaphthalene, ethylvinylether, methylvinylether and allyl acrylate Or mixtures thereof.

As the cationic polymer having the crosslinked structure, polyquaternium-37 may be used.

The dialkyl carbonate may be represented by the following Chemical Formula 2:

[Formula 2]

R ₁ OC (O) OR ₂

(In Formula 2,

R ₁ and R ₂ each represent a linear or branched saturated or unsaturated alkyl group having 1 to 22 carbon atoms.)

The hair conditioning composition of the present invention is excellent in the conditioning effect of imparting softness, smoothness, shine to damaged hair, and the conditioning effect lasts longer than the conventional composition.

It is applied directly to the hair without having to wash it out. It is an aqueous emulsion type, so it is easy to use and carry since there is no stickiness or oil remaining on the hand after use. In addition, when applied to the hair with a suitable viscosity excellent applicability and does not flow out of the hair.

Excellent formulation stability allows long-term storage.

Hereinafter, the present invention will be described in detail.

The hair conditioning composition in the form of an aqueous emulsion of the invention is from the group consisting of dialkylaminoalkyl (meth) acrylates, quaternary ammonium salts of dialkylaminoalkyl (meth) acrylates and acid salts of dialkylaminoalkyl (meth) acrylates. Any one monomer selected; And a cationic polymer having a crosslinked structure formed of a crosslinking agent.

In general, the cationic polymer is mainly used as a conditioning agent in the hair composition, but the cationic polymer used in the present invention has a crosslinked structure, and thus has a high viscosity and excellent thickening effect, thereby improving the spreadability of the composition's hair and stabilizing an aqueous emulsion. Contribute to.

The cationic polymer having a crosslinked structure is any one selected from the group consisting of dialkylaminoalkyl (meth) acrylates, quaternary ammonium salts of dialkylaminoalkyl (meth) acrylates, and acid salts of dialkylaminoalkyl (meth) acrylates. It is formed by polymerizing a monomer of and crosslinking with a crosslinking agent.

The dialkylaminoalkyl (meth) acrylate may be represented by the following Chemical Formula 1:

[Formula 1]

(In Chemical Formula 1,

R ₁ , R ₂ , R ₅ , R ₆ are alkyl groups having 1 to 8 carbon atoms, preferably 1 to 5 carbon atoms,

R ₃ is an alkylene group having 1 to 8 carbon atoms, preferably 1 to 5 carbon atoms,

R ₄ is hydrogen or a methyl group.)

The acid salt of the dialkylaminoalkyl (meth) acrylate can be formed using halogenic acid, such as hydrochloric acid, acetic acid, phosphoric acid, nitric acid, citric acid or other acids.

The crosslinker reacts with the monomer portion of the polymer to be incorporated into the polymer and form a crosslink through covalent bonds between each polymer. The crosslinking agent is methylenebisacrylamide, ethylene glycol, propylene glycol, butylene glycol, di (meth) acrylate, di (meth) acrylamide, cyanomethyl acrylate, vinyloxyethyl acrylate, vinyloxyethyl methacrylate Or allyl pentaerythritol, trimethylolpropanediallylether, allyl sucrose, butadiene, isoprene, 1,4-diethylenebenzene, divinylnaphthalene, ethylvinylether, methylvinylether and allyl acrylate Mixtures of these can be used. Preferably methylenebisacrylamide can be used.

As the cationic polymer having the crosslinked structure, polyquaternium-37 may be used. Polyquaternium-37 uses methyl quaternized dimethylaminoethyl methacrylate as a monomer and methylenebisacrylamide as a crosslinking agent. Polyquaternium-37 can be used alone or dispersed in a liquid phase such as mineral oil or propylene glycol / dicaprylate-dicaprate. The polyquaternium-37 is commercially available from Ciba Specialty Chemicals under the trade name Salcare SC95, or Salcare SC96.

According to an embodiment of the present invention, the cationic polymer having the crosslinking structure may be included in an amount of 0.5 to 10 parts by weight based on 100 parts by weight of the total composition. Preferably it may be included in 0.5 to 5 parts by weight. When added below this range, the viscosity is lowered, leading to poor application and formulation stability of the hair, and when added beyond this range, it is difficult to uniformly form a phase.

The composition of the present invention comprises a high viscosity dimethicone gum.

The high viscosity dimethicone gum imparts a conditioning effect to the hair and improves the persistence of the conditioning effect.

The high viscosity dimethicone gum may have a viscosity of 5,000,000 to 50,000,000 cPs at 25 ° C. If the viscosity is lower than the above range, the conditioning effect and the persistence of the conditioning effect is reduced, and if the viscosity is higher than the above range, the hair may stick, and the composition may have difficulty in uniformly applying to the hair.

Dow Corning's LS-1263, DC 2-1411, DC 2-1413, etc. may be used as the high viscosity dimethicone gum, but is not limited thereto.

According to one embodiment of the present invention, the high viscosity dimethicone gum may be included in an amount of 0.1 to 5 parts by weight, preferably 0.5 to 3 parts by weight, based on 100 parts by weight of the total composition. If it is added below the range, the conditioning effect and persistence is lowered, and if it is added beyond the range, buildup and deterioration of hair may occur.

The composition of the present invention comprises a dialkyl carbonate.

The dialkyl carbonate not only prevents the hair from sticking together when a large amount of high viscosity dimethicone gum is used, but also improves applicability to the hair of the composition and gives a conditioning effect.

The dialkyl carbonate may be represented by the following Chemical Formula 2:

[Formula 2]

R ₁ OC (O) OR ₂

(In Formula 2,

R ₁ and R ₂ each represent a linear or branched saturated or unsaturated alkyl group having 1 to 22 carbon atoms.)

Specific examples of the dialkyl carbonate include, but are not limited to, dimethyl carbonate, diethyl carbonate, diethylhexyl carbonate, dicaprylyl carbonate, and the like.

According to one embodiment of the present invention, the dialkyl carbonate may be included in an amount of 0.1 to 5 parts by weight, preferably about 0.5 to 5 parts by weight, based on 100 parts by weight of the total composition. If the amount is added below the range, the effect of improving hair spreadability is insignificant, and if it is added beyond the range, build-up occurs and the hair feel worsens.

The composition of the present invention comprises polysorbate.

The polysorbate ensures the stability of the emulsion that may become unstable when using a large amount of silicone oil.

The polysorbates include polysorbate-20, polysorbate-40, polysorbate-60 and polysorbate-80.

According to one embodiment of the present invention, the polysorbate may be included in an amount of 0.1 to 5 parts by weight, preferably about 0.5 to 3 parts by weight, based on 100 parts by weight of the total composition. If it is added below the above ranges, there is a problem in stability due to coagulation and coalescence of the emulsion, and if it is added above the above ranges, a wet and unpleasant feeling appears when applied to the hair.

The composition of the present invention contains a variety of ingredients well known in the art, such as nonionic surfactants, moisturizers, fatty substances, wetting substances, fragrances, preservatives, vitamins, proteins, etc., in order to maintain basic properties and quality. Ingredients commonly used in the manufacture may be included. Specifically, preservatives such as DMH hydantoin; Hair repair agents such as hydrolyzed wheat protein; And the like can be used.

Hereinafter, the present invention will be described in detail through Examples and Comparative Examples. The scope of the present invention is not limited by the following examples and comparative examples.

<Examples 1 to 7>

According to the composition of Table 1, DMDM hydantoin, polysorbate 60, dimethicone, diethylhexyl carbonate, polyquaternium-37, and scent were added to the purified water in order, and the homomixer was used until it became a uniform phase. And stirring to prepare a hair conditioning composition in the form of an aqueous emulsion. The units in Table 1 are parts by weight.

Composition Example 1 Example 2 Example 3 Example 4 Example 5 Example
6 Example
7 Polysorbate 60 1.0 1.0 1.0 1.0 1.0 1.0 2.0 Dimethicone A (15%) ¹⁾ 10.0 10.0 20.0 - 10.0 10.0 10.0 Dimethicone B (15%) ²⁾ - - - 10.0 - - - Diethylhexylcarbonate ³⁾ 2.0 2.0 2.0 2.0 5.0 - 2.0 Dicaprylylcarbonate ⁴⁾ - - - - - 2.0 - Polyquaternium-37 (50% dispersion) ⁵⁾ 2.0 1.0 2.0 2.0 2.0 2.0 2.0 DMH Hydantoin 0.15 0.15 0.15 0.15 0.15 0.15 0.15 incense A reasonable amount A reasonable amount A reasonable amount A reasonable amount A reasonable amount A reasonable amount A reasonable amount Purified water Residual amount Residual amount Residual amount Residual amount Residual amount Residual amount Residual amount

1) Product Name: DC 2-1411 (Maker: Dow Corning)

Dimethicone gum (20 million cPs of undiluted viscosity) 15% + cyclomethicone 85%

2) Product Name: DC 2-1413 (Maker: Dow Corning)

Dimethicone Gum (Stock Viscosity 50 Million cPs) 15% + Cyclomethicone 85%

3) Product Name: Tegosoft DEC (Maker: Degussa)

4) Product Name: Cetiol CC (Maker: Cognis)

5) Product Name: Salcare SC96 (Maker: Ciba Specialty)

<Comparative Examples 1 and 2>

A hair conditioning composition in the form of an aqueous emulsion was prepared in the same manner as in Examples 1 to 7, except that Polyquaternium-37 (50% dispersion) was not added or contained in less than 0.5 parts by weight.

Comparative Example 3

A hair conditioning composition in the form of an aqueous emulsion was prepared in the same manner as 1 to 7, except that no dialkyl carbonate was included.

<Comparative Examples 4 and 5>

A hair conditioning composition in the form of an aqueous emulsion was prepared in the same manner as in Examples 1 to 7, except that dimethicone having a viscosity of less than 5,000,000 cPs was used.

<Comparative Examples 6 and 7>

A hair conditioning composition in the form of an aqueous emulsion was prepared in the same manner as in Examples 1 to 7, except that no polysorbate was added and no addition was made in the content range of the present invention.

The composition of the hair conditioning composition in the form of the aqueous emulsion of the comparative example is shown in Table 2 below. The unit in Table 2 is parts by weight.

Composition Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative example
6 Comparative Example 7 Polysorbate 60 1.0 1.0 1.0 1.0 1.0 - 6.0 Dimethicone A (15%) 10.0 10.0 10.0 - - 10.0 10.0 Dimethicone C (33%) ¹⁾ - - - 5.0 - - - Dimethicone D (30%) ²⁾ - - 5.0 - Diethylhexyl carbonate 2.0 2.0 - 2.0 2.0 2.0 2.0 Polyquaternium-37 (50% dispersion) - 0.5 2.0 2.0 2.0 2.0 2.0 incense A reasonable amount A reasonable amount A reasonable amount A reasonable amount A reasonable amount A reasonable amount A reasonable amount DMH Hydantoin 0.15 0.15 0.15 0.15 0.15 0.15 0.15 Purified water Residual amount Residual amount Residual amount Residual amount Residual amount Residual amount Residual amount

1) Product Name: BY 11-042 (Maker: Dow Corning)

Dimethicone gum (4 million cPs of liquid viscosity) 33% + cyclomethicone 67%

2) Product Name: BY 11-031 (Maker: Dow Corning)

Dimethicone gum (stock viscosity 1 million cPs) 30% + dimethicone Fluid (stock viscosity 10 cPs) 70%

Experimental Example 1 Viscosity Measurement

After the compositions of Examples 1 to 7 and Comparative Examples 1 to 2 were left in an incubator maintained at room temperature (25 ° C.) for at least 24 hours to adjust the temperature of the contents, Brookfield Viscometer RVT model (Spindle 06, 10 rpm, 15 sec) was prepared. The viscosity was measured, and the results are shown in Table 3.

Item Example Comparative example One 2 3 4 5 6 7 One 2 Viscosity
(Unit: cPs) 21,000 12,300 23,500 22,300 18,400 21,100 17,300 50 200

As shown in Table 3, Examples 1 to 7 have a high viscosity, which is a convenient level to use, and do not flow down when applied to the hair. In the case of the comparative example, the viscosity is low, and when applied to the hair flows down and is inconvenient to use.

Experimental Example 2 Evaluation of Usability

100 women in their 20s to 40s were selected to use the products containing the hair conditioning compositions of Examples and Comparative Examples once daily for two weeks and then evaluated according to the following evaluation criteria, and the results are shown in Table 4 below. .

-Evaluation standard

1: very bad, 2: bad, 3: moderate, 4: good, 5: very good

Item Example Comparative example One 2 3 4 5 6 7 One 2 Ease of use 4.0 3.4 4.1 4.2 3.6 4.1 3.5 1.3 1.7 Moderate viscosity 4.0 3.2 3.7 3.9 3.8 3.9 3.3 1.1 1.1 Apply evenly to hair 3.9 3.8 3.6 3.5 4.1 3.8 3.7 2.1 2.3

According to Table 4, Examples 1 to 7 were found to have a suitable viscosity compared to Comparative Examples 1 to 2 and to be evenly applied to the hair, which is very convenient. As confirmed in the above results, polyquaternium-37 imparts moderate viscosity and affects the applicability to the hair of the composition.

Experimental Example 3 Evaluation

100 women in their 20s to 40s were selected to use the products containing the compositions of Examples and Comparative Examples once daily for two weeks and then evaluated according to the following evaluation criteria, and the results are shown in Table 5 below.

- Evaluation standard

1: very bad, 2: bad, 3: moderate, 4: good, 5: very good

Item Example Comparative example One 3 4 5 7 Hair softness after application 4.1 2.5 3.8 3.4 2.6 Hair softness after 1 hour 4.2 2.7 3.6 3.0 2.6 Hair softness after 2 hours 4.1 2.8 2.3 2.1 2.4 Hair softness after 8 hours 3.9 2.5 2.2 2.0 2.6

According to the said Table 5, Example 1 was evaluated in all the items compared with the comparative example 3, 4, 5, 7. In Comparative Example 3, in which the dialkyl carbonate was not included, it was found that the softness of the hair was reduced, thereby reducing the conditioning effect, and stickiness occurred at the time of application. In Comparative Examples 4 and 5 using the dimethicone of low viscosity, it was found that the persistence of the hair softness fell and the persistence of the conditioning effect decreased. In addition, in the case of Comparative Example 7 in which an excessive amount of polysorbate was used, a damp feeling occurred at the time of coating, and the feeling of use was evaluated as poor.

Experimental Example 4 Emulsion Stability Evaluation

Evaluation of emulsion stability was utilized to observe the formation state of the emulsion using an optical microscope. The stability of the emulsion is known to be the most unstable under Freeze-Thaw conditions. Therefore, the composition of Example 1 and Comparative Example 6 was raised for 8 hours at -10 ° C, for 4 hours from -10 ° C to 25 ° C, for 8 hours at 25 ° C, and for 4 hours down to -10 ° C from 25 ° C. After making 5 cycles in total, the state of the emulsion was confirmed under a microscope. The results are shown in FIGS. 1 to 4.

1 and 2 show the emulsion state after the initial emulsion state and 5 cycles of Example 1, it can be seen that the emulsion is maintained stable even after 5 cycles. 3 and 4 show the emulsion state after the initial emulsion state and 5 cycles of Comparative Example 6. In the case of the composition of Comparative Example 6 that does not contain polysorbate it can be confirmed that after five cycles of the emulsion aggregation and coalescence does not maintain stability.

As described above, the hair-conditioning composition of the aqueous emulsion form of the present invention is not only excellent in the conditioning effect and the sustaining effect of the conditioning effect, but also applied directly to the hair without flowing down to a suitable viscosity and uniformly applied to the hair without having to be washed off with water. It is easy to use and the formulation is stable.

1 shows the initial emulsion state of Example 1. FIG.

2 shows the emulsion state after 5 cycles of Example 1. FIG.

3 shows the initial emulsion state of Comparative Example 6.

4 shows the emulsion state after 5 cycles of Comparative Example 6. FIG.

Claims (5)

Any one monomer selected from the group consisting of dialkylaminoalkyl (meth) acrylates, quaternary ammonium salts of dialkylaminoalkyl (meth) acrylates and acid salts of dialkylaminoalkyl (meth) acrylates; And 0.5 to 10 parts by weight of the cationic polymer having a crosslinked structure formed of a crosslinking agent based on 100 parts by weight of the total composition. 0.1 to 5 parts by weight of a high viscosity dimethicone gum having a viscosity of 5,000,000 to 50,000,000 cPs at 25 ° C based on 100 parts by weight of the total composition; 0.1 to 5 parts by weight of dialkyl carbonate based on 100 parts by weight of the total composition; And Hair conditioning composition in the form of an aqueous emulsion, characterized in that it comprises 0.1 to 5 parts by weight of polysorbate based on 100 parts by weight of the total composition. The method of claim 1, Hair conditioning composition in the form of an aqueous emulsion, wherein the dialkylaminoalkyl (meth) acrylate is represented by the following Chemical Formula 1: [Formula 1]

(In Chemical Formula 1, R ₁ , R ₂ , R ₅ , and R ₆ are alkyl groups having 1 to 8 carbon atoms, R ₃ is an alkylene group having 1 to 8 carbon atoms, R ₄ is hydrogen or a methyl group.) The method of claim 1, The crosslinking agent is methylenebisacrylamide, ethylene glycol, propylene glycol, butylene glycol, di (meth) acrylate, di (meth) acrylamide, cyanomethyl acrylate, vinyloxyethyl acrylate, vinyloxyethyl methacrylate , Allyl pentaerythritol, trimethylolpropanediallyl ether, allyl sucrose, butadiene, isoprene, 1,4-diethylenebenzene, divinylnaphthalene, ethylvinylether, methylvinylether and allyl acrylate alone Or a mixture thereof, in the form of an aqueous emulsion. The method of claim 1, The cationic polymer having a crosslinked structure is a polymer using methyl quaternized dimethylaminoethyl methacrylate as a monomer and methylenebisacrylamide as a crosslinking agent. The method of claim 1, Hair conditioning composition in the form of an aqueous emulsion, wherein the dialkyl carbonate is represented by the following formula (2): [Formula 2] R ₁ OC (O) OR ₂ (In Chemical Formula 2, R ₁ and R ₂ each represent a linear or branched saturated or unsaturated alkyl group having 1 to 22 carbon atoms.)

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