JPH0696487B2 - Compositions for skin and hair - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention provides a gel by blending one or more water-soluble chitin derivatives and one or more water-swelling clay minerals in a formulation. The present invention relates to a composition for skin and hair, which is characterized by excellent chemical ability, feeling in use, and stability.

[Prior Art] Most conventional compositions for skin and hair, except for those having a non-viscous solution form such as lotion, contain a substance having a gelling ability in some form such as emulsion, cream or gel, Alternatively, they were used in combination to maintain usability and stability.

More specifically, it was a composition in which a synthetic polymer, soap, higher alcohol, wax, etc. were used to increase the viscosity and maintain the usability and stability.

However, these skin and hair compositions, for example, when a synthetic polymer is added in order to sufficiently maintain stability, cause stickiness and the like to impair the feeling of use, and when soap, higher alcohols, waxes, etc. are added, the composition becomes sticky and crystalline. In many cases, it was accompanied by deterioration of quality such as precipitation, and there were few cases in which it was satisfactory.

In addition, although the composition for skin and hair produced by using the gelling agent in an amount that does not impair the feeling of use retains the target shape immediately after the adjustment, when stored, it may have a decrease in viscosity over time, and may have a quality such as separation. It caused deterioration.

Further, a composition for skin and hair in which a water-swelling clay mineral is blended to have a viscosity due to its gelling ability is sometimes found, but in that case, a relatively large amount of the water-swelling clay mineral is required. In terms of usability, "squeaking" and the like appeared, and the usability was not satisfactory.

[Problems to be Solved by the Invention] As a result of intensive studies in view of such circumstances, the present inventors have found that one or more water-soluble chitin derivatives and one or more water-swellable clay minerals are contained in a formulation. It was found that a composition for skin and hair excellent in gelling ability, feeling in use, and stability can be obtained by blending, and the present invention has been completed.

[Means and Actions for Solving Problems] That is, the present invention is characterized in that one or more water-soluble chitin derivatives and one or more water-swelling clay minerals are mixed in the formulation. The present invention provides a composition for skin and hair, which is excellent in gelling ability, feeling in use, and stability.

Hereinafter, the configuration of the present invention will be described in detail. In the following description, the composition for skin and hair is simply referred to as a composition.

In addition, the gel described in the present invention is not limited to a solidified gel, and includes a fluidized thickened state.

The water-soluble chitin derivative used in the present invention is derived from chitin which is present in the shells of crustaceans such as crab and shrimp, the exoskeleton of insects, or fungi, the cell wall of algae, etc. First, chitosan which is a deacetylated product of chitin is exemplified.

As a specific example of obtaining chitosan, the shells of crab and shrimp are treated with dilute hydrochloric acid for decalcification and then with dilute sodium hydroxide solution for deproteinization. The obtained crude chitin is washed with water, purified if necessary, and then deacetylated with concentrated sodium hydroxide solution.
The obtained crude chitosan is washed with water and, if necessary, purified to obtain chitosan.

Although chitin itself is generally insoluble in water, chitin treated by some method is water soluble. That is, it is a water-soluble partially deacetylated chitin exemplified in JP-A-53-47479. This water-soluble partially deacetylated chitin can also be used in the present invention.

Further, water-soluble chitins having a substituent introduced therein, such as carboxymethyl chitin having a carboxymethyl group introduced therein, glycolized chitin, chitin sulfate, etc., can also be applied to the present invention.

In the present invention, the amount of the water-soluble chitin derivative to be blended is 0.001 to 10% by weight (hereinafter simply referred to as%), and 0.0
If it is less than 01%, the effect of the present invention is difficult to be exerted, and if it exceeds 10%, the solubility of the water-soluble chitin derivative is exceeded and it becomes difficult to prepare a composition.

The amount to be blended for exhibiting the effect of the present invention is preferably 0.01 to 1%.

Further, addition of a small amount of an oxidizing substance together with the water-soluble chitin derivative for the purpose of dissolving the water-soluble chitin derivative according to the present invention does not inhibit the effects of the present invention.

For example, for the purpose of dissolving chitosan, even if an equivalent amount of hydrochloric acid is used in combination with the weight of chitosan, the effect of the present invention is unchanged.

On the other hand, the water-swellable clay mineral used in the present invention may be any one as long as it can be usually added to the composition.

Generally, it is a kind of colloidal hydrous aluminum silicate having a three-layer structure and is represented by the following general formula.

(X, Y) ₂₃ (Si, Al) ₄ O ₁₀ (OH) ₂ Z ・ H ₂ O where X = Al, Fe, Mn, Cr Y = Mg, Fe, Ni, Zn, Li Z = K, Na , Ca Specifically, it is a natural or synthetic smectite (in which case, the hydroxyl group in the formula is replaced by fluorine) such as montmorillonite, saponite, and hectorite, and commercially available products include bee gum, kunipia, laponite, and smecton. and so on. Further, it is a synthetic mica known as the name of sodium silicic mica or sodium or lithium teniolite (such as dimonite as a commercial product).

One or more of these water-swellable clay minerals are used.

The amount of the water-swellable clay mineral compounded in the composition together with the water-soluble chitin derivative according to the present invention is 0.01 to 10%, preferably 0.1 to 5%.

As a composition base for blending the water-soluble chitin derivative and the water-swelling clay mineral according to the present invention, a usual composition base can be used.

For example, a cream, a milky liquid, a paste, or the like can be applied.

In addition to purified water, a moisturizing agent can be added to the base material of the composition, if necessary.

Examples thereof include glycerin, 1.3-butylene glycol, propylene glycol, dipropylene glycol, sorbitol, maltitol, hyaluronic acid, chondroitin sulfate and polyethylene glycol.

As oil, liquid paraffin, squalane, petrolatum,
Hydrocarbons such as solid paraffin, olive oil, jojoba oil,
Evening primrose oil, coconut oil, natural oils such as beef tallow, isopropyl myristate, pentaerythritol-tetra-2-ethylhexanoate, cetyl isooctanoate and other S oil, methyl silicone, methine phenyl silicone and other silicone oil, cetyl Higher alcohols such as alcohol, oleyl alcohol, behenyl alcohol, stearic acid, behenic acid, palmitic acid, myristic acid, lauric acid, oleic acid, isostearic acid, and other fatty acids,
Etc. can be used together.

As the surfactant, those which can be usually added to the composition can be applied.

Non-ionic compounds include POE alkyl ether, POE
Branched alkyl ethers, POE sorbitan esters, POE glycerin fatty acid esters, POE hydrogenated castor oil, sorbitan esters, glycerin fatty acid esters, polyglycerin fatty acid esters, etc. are common.

As the anionic substance, fatty acid, acylglutamic acid, alkylsulfuric acid, alkylphosphoric acid, potassium sulfonate of alkylsulfonic acid, sodium, triethanolamine and basic amino acid salt, POE alkylsulfuric acid and the like are generally used.

As the cationic one, trimethylstearyl ammonium chloride, dimethyl disteariammonium chloride, etc. are generally used.

Further, even if vitamins, antiphlogistics, bactericides, activators, ultraviolet absorbers, chelating agents for stabilizing the composition, buffers, preservatives and the like are added as drugs, the effects of the present invention are impaired. is not.

It goes without saying that components that modify the composition, such as dyes and fragrances, can be used in combination.

Next, the present invention and the effects of the present invention will be described in detail with reference to Examples and Comparative Examples, but the present invention is not limited thereto.

<Example 1> Beauty essence Natural montmorillonite 1 wt% (trade name Kunipia G-4) Chitosan 0.1 Hydrochloric acid 0.05 Glycerin 10 Purified water 100% <Comparative example 1> Beauty essence Natural montmorillonite 1 wt% (Product name Kunipia G- 4) Glycerin 10 Purified water based on 100 as a whole <Comparative example 2> Beauty essence Chitosan 0.1 Hydrochloric acid 0.05 Glycerin 10 Purified water based on 100 as a whole <Comparative example 3> Beauty essence Carboxyvinyl polymer 0.2 Caustic potassium 0.1 Glycerin 10 Purified Amount of water as 100 Example 1 is an example in which a water-soluble chitin derivative was blended together with a water-swellable clay mineral according to the present invention, and the gel state immediately after preparation was kept stable over time. This is the effect of the present invention.

On the other hand, Comparative Examples 1, 2, and 3 are examples in which only the water-swellable clay mineral and the water-soluble chitin derivative were blended, and when other thickeners were blended. Comparative Examples 1 and 2 do not show a gel form, and Comparative Example 3 has a viscosity decrease with time although it is a gel form immediately after preparation.

On the other hand, in terms of usability, when 20 beauty technicians used each sample, there was a significant difference in the number of people who complained of stickiness.

That is, the gel sample of Comparative Example 3 is observed to be considerably sticky as compared with the gel sample of Example 1. This is because the technique according to the present invention is not applied, and the first embodiment according to the present invention is excellent in usability.

<Example 2> Hair cleansing agent Carboxymethyl chitin 0.5 wt% Synthetic saponite 0.5 (trade name Smenton SA) Sodium dodecyl sulfate 10 Propylene glycol 3 Coconut oil diethanolamide 1 Preservative proper amount Fragrance proper amount Purified water 100 amount as a whole <Comparison Example 4> Hair cleansing agent Carboxymethyl cellulose 1.0 Sodium dodecyl sulfate 10 Propylene glycol 3 Coconut oil diethanolamide 1 Preservative Suitable amount Perfume Suitable amount Purified water 100 as the total amount 100 samples of Example 2 and Comparative Example 4 were beauticians All 15 people felt that the sample of Comparative Example 4 was sticky during use and complained of sliminess during rinsing.

In contrast, the sample of Example 2 had no stickiness during use and no slime during rinsing. This is the effect of the present invention.

<Example 3> Moisturizing cream Water-soluble partially deacetylated chitin 0.05 wt% Chitosan 0.05 Lactic acid 0.05 Natural montmorillonite 2 (trade name Kunipia G-4) Natural saponite 1 (trade name Biegum HV) Cetyl alcohol 0.5 Vaseline 3 Squalane 5 Glyceryl monostea Rate 2 POE (60) Gluceryl monoisostearate 2 Glycerin 3 Propylene glycol 3 Vitamin E Acetate 0.5 Preservative Suitable amount Perfume Suitable amount Purified water 100% <Comparative Example 5> Moisturizing cream Stearic acid 3 Caustic potassium 0.1 Stearyl alcohol 3 Cetyl alcohol 0.5 Vaseline 3 Squalane 5 Glyceryl monostearate 2 POE (60) Gluceryl monoisostearate 2 Glycerin 3 Propylene glycol 3 Vitamin E Acetate 0.5 Preservative proper amount Perfume proper amount Purified water whole 1 Amount to be 00 After the samples of Example 3 and Comparative Example 5 were stored at room temperature and 0 ° C. for 6 months respectively, the properties of the samples were evaluated. While the stearic acid and stearyl alcohol compounded as (3) precipitated as crystals and the surface of the cream became rough, in the sample of Example 3, no change in properties was observed between the sample and the product immediately after preparation. That is, the sample of Example 3 has excellent stability over time, which is an effect of the present invention.

Also in terms of usability, the sample of the comparative example is of the slightly sticky type, whereas the sample of the example is a non-sticky and refreshing type. This is also the effect of the present invention.

<Example 4> Hair rinse Synthetic hectorite 0.1 wt% (trade name Laponite XLG) Chitin sulfate 10 Propylene glycol 5 Cetyl alcohol 1 Trimethylstearyl ammonium chloride 0.5 Trimethylbehenyl ammonium chloride 0.5 Preservative proper amount Perfume proper amount Purified water 100 parts as a whole <Comparative Example 6> Hair rinse Propylene glycol 5 Cetyl alcohol 1 Trimethylstearyl ammonium chloride 0.5 Trimethylbehenyl ammonium chloride 0.5 Preservative proper amount Fragrance proper amount Purified water amount of 100 The hair rinse of Example 4 has a viscosity of 3400 cps at 30 ° C. Although the sample of Comparative Example 6 had a viscosity of 130 cps at 30 ° C., the sample of Comparative Example 6 was difficult to use because it flowed down when applied to hair. It is obvious that the technique according to the present invention, that is, the effect of adding the water-swellable clay mineral and the water-soluble chitin derivative is effective.

<Example 5> Sunscreen lotion Chitosan 0.001 wt% acetic acid 0.001 Synthetic hectorite 1 (trade name Laponite XLG) Fine particle titanium oxide 2 ASL-24S 0.5 Sodium hexametaphosphate 0.05 Glycerin 3 Preservatives Appropriate amount Purified water Total amount of 100 < Comparative Example 7> Carboxyvinyl Polymer 0.1 Triethanolamine 0.05 Fine Particle Titanium Oxide 2 ASL-24S 0.5 Sodium hexametaphosphate 0.05 Glycerin 3 Preservative Suitable amount Purified water 100% In Example 6, a sunscreen lotion having a viscosity of 2000 cps at 30 ° C. However, in Comparative Example 7, the fine particle titanium oxide was aggregated due to the influence of the synthetic polymer compounded for the purpose of thickening, and the sunscreen lotion could not be prepared.

<Example 6> Water-soluble pomade Water-soluble partially deacetylated chitin 0.1 wt% lactic acid 0.05 Natural montmorillonite 0.5 (trade name Kunipia G-4) Synthetic saponite 3 (trade name Smecton SA) Dipropylene glycol 8 glycerin 5 citric acid 0.03 citric acid Trisodium 0.1 Polyvinylpyrrolidone 0.1 Preservative Suitable amount Purified water Total amount of 100 <Example 7> Massage gel Gel carboxymethyl chitin 0.2 wt% Glycol chitin 0.2 Synthetic hectorite 3 Liquid paraffin 5 Low viscosity silicone (6cs) 5 Volatilization Cyclic Silicone 3 Potassium Stearate 1 Vaseline 2 Jojoba Oil 2 Sorbitol Liquid 10 Preservative Suitable amount Purified water 100%

Claims (1)

[Claims] 1. A skin and hair composition comprising one or more water-soluble chitin derivatives and one or more water-swelling clay minerals.