JPS63277608A - Composition for skin and hair - Google Patents

Abstract

PURPOSE:To obtain the titled composition, containing an alkyloylalkyltaurine salt type anionic surfactant and water-soluble chitin derivative and having excellent feeling of use and stability. CONSTITUTION:The titled composition obtained by blending 0.1-30wt.% anionic surfactant expressed by the formula (R1 is 7-19C alkyl or alkenyl; R2 is 1-3C alkyl; M is alkali metal, organic amines or basic amino acids) and 0.01-1wt.% water-soluble chitin derivative (e.g. chitosan, water-soluble partially deacetylated chitin or carboxymethylchitin) with a base in the form, such as liquid, cream, milky lotion or paste. This composition, as necessary, can be blended with a humectant and applied to humectant cream, emulsified essence, shampoo, hair treatment, body cleanser, paste or lotion for washing face, etc. A small amount of an acidic substance may be added for the purpose of dissolving the water-soluble chitin derivative.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention comprises a formulation containing one or more water-soluble chitin derivatives and an alkyl alkyl taurine salt type anionic surfactant represented by the following general formula. The present invention relates to a skin and hair composition characterized by having excellent usability and stability by incorporating one or more of the following.

Rr-C0-N-CH2CR2-S 03M (R1 in the formula
represents an alkyl group or alkenyl group having an average of 7 to 19 carbon atoms, R2 represents a lower alkyl group having an average of 1 to 3 carbon atoms, and M represents an alkali metal, an organic amine, or a basic amino acid. ) [Prior art] Chitin and its derivatives, which exist in the shells of crabs, shrimps, etc., the exoskeletons of insects, and the cell walls of bacteria and algae, have excellent moisturizing effects and skin and hair protection effects. Although it has attracted attention as a polymeric material as a raw material for skin and hair compositions, it has poor compatibility with ordinary raw materials and has been difficult to dissolve uniformly in skin and hair compositions. Therefore, when chitin and its water-soluble derivatives are incorporated into skin and hair compositions, although they are expected to have excellent moisturizing and skin and hair protection effects, their actual use has been difficult.

[Problems to be Solved by the Invention] In view of the above circumstances, the present inventors have conducted intensive research and have found that formulas containing the general formula % (wherein R1 is an alkyl group having an average number of carbon atoms of 7 to 19 or alkenyl R2 is a lower alkyl group having an average number of carbon atoms of 1 to 3, and M represents an alkali metal, an organic amine, or a basic amino acid. The present inventors have discovered that a skin and hair composition with excellent usability and stability can be obtained by blending one or more water-soluble chitin derivatives together with two or more other types of chitin derivatives.

[Means and effects for solving the problem] That is, the present invention combines one or more water-soluble chitin derivatives and one or more alkyl alkyl taurine salt type anionic surfactants in the formulation. The present invention provides a composition for skin and hair that is characterized by excellent usability and stability.

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

The water-soluble chitin derivatives used in the present invention are derived from chitin present in the shells of crustaceans such as crabs and shrimps, the exoskeletons of insects, and the cell walls of bacteria and algae. An example of this is chitosan, which is a deacetylated product of chitin.

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

The obtained crude chitosan is washed with water and, if necessary, purified to obtain chitosan.

Chitin itself is generally insoluble in water, but chitin that has been treated by certain methods is water-soluble. That is, the degree of deacetylation is 4 as exemplified in JP-A No. 53-47479.
It is 0-60% water soluble partially deacetylated chitin. This water-soluble partially deacetylated chitin can also be used in the present invention.

Furthermore, chitin made water-soluble by introducing substituents, such as carboxymethyl chitin with carboxymethyl groups introduced, glycolated chitin, and chitin sulfate, can also be applied to the present invention.

Chitin is usually a polymer with a molecular weight of 1,000,000 or more, but the molecular weight of its derivatives decreases during the treatment process, and it is not uncommon for chitin to have a molecular weight of several hundred thousand.

The water-soluble chitin derivative used in the present invention can range in molecular weight from a natural one of 1,000,000 or more to a low molecular weight one.

In the present invention, the amount of the water-soluble chitin derivative blended is 0.001 to 10% by weight (hereinafter simply referred to as %), and at a level of 0.001% or less, it is difficult to exhibit the effects of the present invention; If the amount exceeds the solubility of the water-soluble chitin derivative, it becomes difficult to prepare a composition.

The amount added to achieve the effects of the present invention is preferably 0.01 to 1%.

Further, even if a small amount of an acidic substance is added together with the water-soluble chitin derivative for the purpose of dissolving the water-soluble chitin derivative according to the present invention, the effects of the present invention will not be inhibited.

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

On the other hand, the alkyl alkyl taurine salt type anionic surfactant used in the present invention has the general formula % formula % (wherein R1 is an alkyl group or alkenyl group having an average number of carbon atoms of 7 to 19, and R2 is an average number of carbon atoms. 1 to 3 lower alkyl groups, M represents an alkali metal, organic amines, or basic amino acids).

Examples of alkyl alkyl taurine salt type anionic surfactants include Nylacol CMT-30 (sodium cocoyl methyl taurate), Nylacol SMT (sodium stearoyl methyl taurate), and Nylacol PMT (sodium cocoyl methyl taurate).
palmitoyl methyl taurate sodium), Nilacol MMT (myristoyl methyl taurate sodium),
Those commercially available under trade names such as Niracol LMT (sodium lauroyl methyl taurate), Diabon-L (sodium lauroyl methyl taurate), 5
Famous commercially available products include T-1,5T-3F (sodium cocoyl methyl taurate) and Hostavon CT paste (sodium cocoyl methyl taurate).

According to the present invention, the amount of the alkyl alkyl taurine salt type anionic surfactant mixed into the composition together with the water-soluble chitin derivative is 0.01 to 50%, preferably 0.1 to 30%.

The composition base in which the water-soluble chitin conductor and the alkyl alkyl taurine salt type anionic surfactant are blended according to the present invention is a composition base in the form of a usual liquid, cream, emulsion, paste, etc. is available. Furthermore, the technology according to the present invention can be applied to moisturizing creams, emulsified essences, shampoos, hair treatments, body cleansers, etc.
1. Can be applied to facial cleansing paste, facial cleansing lotion, etc.

In addition to purified water, a humectant can also be added to the base of these compositions, if necessary.

Examples include glycerin, 1,3-butylene glycol, propylene glycol, dipropylene glycol, sorbitol, maltitol, hyaluronic acid, chondroitin sulfate, and polyethylene glycol.

Oils include liquid paraffin, squalane, petrolatum,
Hydrocarbons such as solid paraffin, olive oil, phoppa oil,
Natural oils such as evening primrose oil, coconut oil, beef tallow, ester oils such as isopropyl myristate, pentaerythritol-tetra-2-ethylhexanoate, cetyl isooctanoate, silicone oils such as methyl silicone, methylphenyl silicone, cetyl Alcohol, higher alcohols such as oleyl alcohol and behenyl alcohol, fatty acids such as stearic acid, behenic acid, valmitic acid, myristic acid, lauric acid, oleic acid, isostearic acid, etc.
etc. can also be used together.

As the surfactant, those that can be generally incorporated into the composition can be used.

Common nonionic materials include P, OE alkyl ether, POE branched alkyl ether, POE sorbitan ester, POE glycerin fatty acid ester, POE cured castor sorbitan ester, glycerin fatty acid ester, polyglycerin fatty acid ester, etc. .

Common anionic compounds include fatty acids, acylglutamic acids, alkyl sulfates, alkyl phosphoric acids, potassium, sodium, triethanolamine and basic amino acid salts of alkyl sulfonic acids, and POE alkyl sulfates.

Even if vitamins, anti-inflammatory agents, bactericidal agents, activators, ultraviolet absorbers, chelating agents, buffers, preservatives, etc. that stabilize the composition are added to the grains, the effects of the present invention will be inhibited. It's not something you do.

It goes without saying that ingredients that normally 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 explained in detail with reference to Examples and Comparative Examples, but the present invention is not limited thereto.

<Example 1> Beauty essence myristoyl methyl taurine 0.1wt χ sodium chitosan (molecule IE 1.2 million) 0.5 Hydrochloric acid 0.05 Glycerin 10 Squalane
5 preservatives
Appropriate amount of purified water Amount to make the whole 100 <Comparative Example 1> Beauty essence myristoyl glutamic acid 0.1 wt% sodium chitosan (molecular weight 1.2 million) 0.5 Hydrochloric acid 0.05 Glycerin 10 Squalane
5 preservatives
Appropriate amount of purified water Weigh the total to 100 Comparative Example 2 Beauty Essence Myristoyl Methyl Taurine 0.1wtX Sodium Glycerin 10 Squalane
5 preservatives
Appropriate amount of purified water Amount to make the total 100 Methylclarin: Alkyloyl alkyl taurine salt type anionic surfactant according to the present invention Akushima glutamine: Acyl glutamate Example 1 is an alkylyl alkyl taurine salt type anionic surfactant according to the present invention This is an example in which a water-soluble chitin derivative is blended with an activator, and the product has excellent storage stability and usability, which are the effects of the present invention.

On the other hand, Comparative Examples 1 and 2 are examples in which a water-soluble chitin derivative and other surfactant were blended, and a case in which a water-soluble chitin derivative was not blended.

Comparative Example 1 contained a surfactant other than the one according to the present invention together with a water-soluble chitin derivative, so it had poor stability over time, and there was a precipitate when stored at room temperature along with the sample of Example 1. The remarkable difference in storage stability between Example 1 and Comparative Example 1 is an effect of the present invention.

On the other hand, in terms of usability, 20 beauty technicians were asked to use the samples of Example 1 and Comparative Example 2 and asked about the suppleness and curls after use, and they were asked to select the sample with excellent suppleness. An overwhelmingly large number of respondents answered that the sample was excellent.

Comparative Example 2 is inferior in usability compared to Example 1, but this is because the technology according to the present invention is not applied, and Example 1 according to the present invention is also superior in usability. . When asked about those who answered that Comparative Example 2 was better, they complained that their skin was severely rough and their sense of use was somewhat numb.

<Example 2> Hair cleanser Carboxymethyl chitin 0.5 wt% (molecular weight 1,000,000 or more) Chitosan 0.1 (molecular weight 1,000,000 or more) Lactic acid 0.1 Coconut oil fatty acid methyltaurine 30 Sodium propylene glycol 3 Coconut oil diethanolamide 2 Preservatives
Appropriate amount of fragrance Appropriate amount of purified water Amount to make the whole 100〈Comparative Example 3〉
Hair cleanser Carboxymethyl chitin 0.5wt% (molecular weight 1,000,000 or more) Chitosan 0.1 (molecular weight 1oooooo or more) Lactic acid 0.1 Sodium dodecyl sulfate 30 Propylene glycol
3 Coconut oil diethanolamide 1
Preservatives Appropriate amount fragrance
Appropriate amount of purified water 1 whole
To prepare the sample of Comparative Example 3, each component was reduced to 70%.
When mixed under heating at 0.degree. C., the mixture did not dissolve uniformly and separated into two phases, resulting in no usable hair cleansing material. This is because a surfactant other than the one according to the present invention was used.

On the other hand, in Example 1, when each component was mixed at 70°C, a translucent and uniform hair cleansing material was obtained, and even after stirring and cooling and storage at room temperature for two months, it exhibited the same properties as immediately after preparation. This is an effect of blending the alkyl alkyl taurine salt type anionic surfactant with the water-soluble chitin derivative according to the present invention.

<Comparative Example 4> Hair cleansing material Coconut oil fatty acid methyl taurine 30vtX Sodium propylene glycol 3 Coconut oil diethanolamide 2 Preservative
Appropriate amount of fragrance Appropriate amount of purified water Amount to make the whole 100 In addition, a sample in which the water-soluble chitin visiting conductor was removed from the sample of Example 2, ie, Comparative Example 4, was prepared and compared with the sample of Example 2 in terms of usability.

Usability was evaluated by 15 beauty technicians who washed their hair with each sample and combed the wet hair before drying. As a result, all 15 people answered that the sample of Example 2 was superior in terms of combability. This is an effect of the present invention.

<Example 3> Moisturizing cream Water-soluble partially deacetylated chitin 0.01vtX chitosan (molecular weight 2.2 million) 0.01 lactic acid
0.01 Cetyl Alcohol 3 Vaseline
3 Squalane 5 Glyceryl Monostearate 2 POE (60) Glyceryl Mono 0.1 Isostearate Stearoyl Methyl Taurine 0.5 Triethanolamine Salt Balmitoyl Methyl Taurine 0.5 Triethanolamine Salt Glycerin 3 Propylene Glycol 3 Vitamin E Acetate 0 .5 Preservatives Appropriate amount of fragrance
Appropriate amount of purified water 1 whole
Amount to be 00 (Comparative Example 5) Moisturizing cream Water-soluble partially deacetylated chitin 0.01wt% chitosan (molecular weight 2.2 million) o, oi lactic acid
0.01 Cetyl Alcohol 3 Vaseline 3 Squalane
5 Glyceryl Monostearate
2 POE (60) Glyceryl mono 0.1 Isostearate glycerin 3 Propylene glycol 3 Vitamin E acetate 0.5 Preservative
Appropriate amount of fragrance Appropriate amount of purified water Amount to make the whole amount 100 After preparing the samples of Example 3 and Comparative Example 5, they were stored at room temperature and 40°C for 6 months, and their properties were evaluated. The sample softens at room temperature, 40℃
In contrast, in the sample of Example 3, no change in properties could be observed between the amount immediately after preparation and the amount immediately after preparation. That is, the sample of Example 3 has excellent stability over time, which is an effect of the present invention.

<Example 4> Body cleanser - Lauroyl methyl taurine 10vt Sodium POE (60) Hydrogenated castor oil 1 Coconut oil diethanolamide 2 Chitin sulfate 10 (molecular weight 200,000) Glycerin 5 Propylene glycol 2 Preservative
Appropriate amount of fragrance
Appropriate amount of purified water Amount to make the whole 100 <Comparative Example 6> Body cleanser - Lauroyl methyl taurine 10vtX sodium POE (60) Hydrogenated castor oil 1 Coconut oil diethanolamide 2 Glycerin
5 propylene glycol
2 Preservatives Appropriate amount Flavoring Appropriate amount Purified water
When 20 beauty technicians used the samples of Example 4 and Comparative Example 6 and evaluated the smoothness and roughness of the skin after use using a 10-point scale, the average value was lower. It was as shown in the table.

Smooth 10 points Not smooth 1 point No scratches 10 points Striking 1 point Table-2 This difference in scores is clearly an effect of the present invention.

<Example 5> Facial cleansing lotion lauroyl methyl taurine 0.05wtX sodium water-soluble partially deacetyl chitin 0.01 (molecular weight 1.5 million or more) acetic acid 0.0195% ethanol 15 glycerin
5 Preservatives Appropriate amount of purified water
The face wash lotion of Example 5 was excellent in usability and stability.

<Example 6> Water-soluble pomade Water-soluble partially deacetylated chitin 1, Ovt% (
Molecular weight 1.8 million or more) Lactic acid 0.5 Myristoylmethyltaurine 1.0 Potassium Low viscosity silicone oil (6cs) 5 Dipropylene glycol 5 Glycerin 25 Polyvinylpyrrolidone 0.3 Preservative
Appropriate amount of purified water (total ioo) The sample of Example 6 was excellent in usability and stability.

<Example 7> Pine surging cream carboxymethyl chitin 0.2 wt% (molecular weight 600,000
~800000) Glycol chitin
0.2 (molecular weight 120,000-300,000) Coconut oil fatty acid methyltaurine 0.5 Triethanolamine liquid paraffin 5 Low viscosity silicone (6cs) 5 Volatile cyclic silicone 5 Jojoba oil 5 Sorbitol liquid 10 Glycerin
10 Methylcellulose 0.5 Preservative
Appropriate amount of purified water, total 10
The sample of Example 7 was excellent in usability and stability.

<Example 8> Cleansing paste Low molecular chitosan 5 wt% (average molecular weight 10000) Lauroyl methyl taurine 20 Sodium myristoyl methyl taurine 10 Sodium stearoyl taurine 5 Sodium polyethylene glycol 400 10 Fragrance
Appropriate amount of preservative
Appropriate amount of purified water (total amount being 100) The sample of Example 8 was excellent in usability and stability.

Claims (1)

[Claims] General formula ▲ Numerical formula, chemical formula, table, etc. group, M represents an alkali metal, organic amines, basic amino acids) and one or more water-soluble chitin derivatives. A composition for skin and hair, characterized in that it contains at least one species.