JP3234302B2 - Cosmetic for hair set - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cosmetic for setting a hair , the purpose of which is to have good usability, to give a hair after shaving without giving a feeling of stiffness, and to apply it to a hair even in a high humidity condition. Another object of the present invention is to provide a hair setting cosmetic which can exhibit excellent set holding power.

[0002]

2. Description of the Related Art Conventionally, oil cosmetics such as hair liquids, hair ticks, pomades and the like, which are mainly composed of fats and oils, waxes, etc., have been used as hair cosmetics used for conditioning hair. However, such oily cosmetics have problems such as stickiness of the scalp and the like during use, and poor dropping during shampooing. In recent years, use of set lotions or hair sprays mainly composed of synthetic polymer compounds has been replaced. Is changing to Compared with conventional oils, fats and waxes, hair cosmetics containing a synthetic polymer as a main component have no sticky feeling to the scalp and the like when used, and also have good shampooing. Suitable usability is exhibited. As such a synthetic polymer compound, for example, in a hair styling material of a hard type, a nonionic polymer compound such as polyvinylpyrrolidone has been mainly used because of its high setting power.

[0003] The above-mentioned nonionic polymer compound forms a hard film and has a strong setting force, but has a problem that the flaking phenomenon easily occurs. In addition, since this compound itself has a hygroscopic property, the film becomes very soft at high temperature and high humidity, and the setting force is weakened. There was a problem that there was a risk that making it impossible.

On the other hand, anionic polymer compounds such as vinyl methyl ether / monoethyl maleate copolymer are also used in cosmetics for hair. This anionic polymer compound is less susceptible to humidity and can exhibit better performance than nonionic polymer compounds at high temperatures and high humidity, but has the problem of low affinity for hair and easy occurrence of flaking phenomenon. there were. Furthermore, the addition of a cationic substance is restricted by being anionic, and there is a possibility that the use of a rinsing agent at the time of washing the hair may cause a solidification phenomenon to the hair.

Further, Polyquaternium-11 (Po
Cationic polymer compounds such as lyquaternium-11) have also been used in hair cosmetics. The cationic polymer compound has a higher affinity for hair than the anionic polymer compound, but has a problem that, like the nonionic polymer compound, it is easily affected by humidity. In addition, because it is cationic, safety issues such as toxicity and skin irritation,
There has been a problem that shampooing during hair washing causes the hair to solidify.

In view of such circumstances, Japanese Patent Publication No. 55-17009
The amphoteric high molecular compound as shown in the gazette has been developed. In recent years, amphoteric polymer compounds such as N-methacryloylethyl N, N-dimethylammonium-α-N-methylcarboxybetaine methacrylate, which have a high affinity for hair and form a flexible and good film, have been developed. It has come to be used in hair cosmetics. The hair cosmetic containing the amphoteric polymer compound has advantages in that it can contain a large amount of water, so that it is easy to fix the hair, the hair after the hair is hard to be rough, and the flaking phenomenon is hard to occur.

[0007]

However, even hair cosmetics containing such an amphoteric polymer compound have a problem that they cannot exhibit high set retention under high humidity conditions. Therefore, in the industry, the hair styling properties of the amphoteric polymer compound described above, that is, it can contain a large amount of water, has good usability, and can exhibit excellent functions such as not giving a stiff feeling to the hair after hair styling, and at the same time, It has been desired to create a hair cosmetic that can exhibit excellent set holding power on hair after hair styling even in a high humidity state.

[0008]

According to the present invention, an N- method is used.
Liloylethyl N, N-dimethylammonium-α-N
-Methylcarboxybetaine / methacrylic acid ester
Polymer and carboxymethylcellulose and / or
Characterized in that salt is contained as an essential component
Cosmetic for hair setting or N-methacryloylethyl
N, N-dimethylammonium-α-N-methylcarbo
Xybetaine-methacrylic acid ester copolymer
The present invention solves all of the above-mentioned conventional problems by providing a cosmetic for hair setting , characterized by containing roxypropylmethylcellulose as an essential component.

[0009]

[Action] carboxymethylcellulose and / or its salt in the formulation for hair set cosmetics <br/> using amphoteric polymer compound, or by blending the hydroxypropylmethylcellulose row scan, N- methacryloyl ethyl N, N −
Methyl ammonium-α-N-methylcarboxybetai
While exhibiting the excellent hair styling properties of the methacrylic acid ester copolymer, it is possible to simultaneously exhibit good set holding power to hair after hair styling even in a high humidity condition.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a hair setting makeup according to the present invention.
The composition of the fee will be described in detail. Use for hair set of the present invention
In cosmetics , an amphoteric polymer compound and a cellulose derivative are contained as essential components. As the amphoteric polymer compound,
An N-methacryloylethyl N, N-dimethylammonium-α-N-methylcarboxybetaine / methacrylic acid ester copolymer represented by the general formula 3 is exemplified as a preferred embodiment of the present invention.

Embedded image (However, in the general formula 3 (Chemical Formula 3) , R represents an alkyl group having 1 to 10 carbon atoms, and the relationship of n: m is 10:90 to 50:
The number average molecular weight is 20,000 to 200,000. )

Such N-methacryloylethyl N,
N-dimethylammonium-α-N-methylcarboxybetaine / methacrylic acid ester copolymer is water-soluble and has good workability at the time of preparation. It has excellent characteristics such that a set state is obtained, hair set
It functions favorably as a setting agent for cosmetics for cosmetics . This N-
Methacryloylethyl N, N-dimethylammonium-
α-N-methylcarboxybetaine / methacrylic acid ester copolymer is 0.5% based on the total amount of the cosmetic for hair setting.
１10.0% by weight. The reason for this is that if the amount is less than 0.5% by weight, sufficient setting power to the hair cannot be obtained, while if the amount exceeds 10.0% by weight, the hair after styling has looseness and flaking. Is remarkable, and in any case, it is not preferable.

Further, in the present invention, in addition to the amphoteric polymer compound described above, a cellulose derivative is contained as one of the essential components. By blending the cellulose derivative in this way, it is possible to make use of the excellent hair styling properties of the amphoteric polymer compound, and at the same time, to extremely improve the set retention of hair in a high humidity state, which was a drawback of the amphoteric polymer. It is based on the experimental knowledge by the present inventors that this can be achieved.

Preferred examples of the cellulose derivative include carboxymethylcellulose and / or a salt thereof, and hydroxypropylmethylcellulose. Examples of carboxymethyl cellulose and / or a salt thereof include, for example, CMC Daicel (manufactured by Daicel Chemical Industries, Ltd.)
And the like, which are commercially available under the trade name of, for example, are preferably used, but there is no particular limitation. As the hydroxypropylmethylcellulose, those commercially available under the trade name of, for example, Metrolose SH (manufactured by Shin-Etsu Chemical Co., Ltd.) are preferably used, but are not particularly limited. Such a cellulose derivative is used in an amount of 0.3 to 0.3% based on the total amount of the cosmetic for hair setting.
1.0% by weight is blended. The reason is that the compounding amount is 0.3
When the amount is less than 10% by weight, the set retention in a high humidity state is low. On the other hand, even when the amount exceeds 1.0% by weight, no improvement in the set retention depending on the blending amount is observed. This is because the case is not preferable.

Further, in this hair setting cosmetic , in addition to the above essential components, a cationic surfactant, an amphoteric surfactant, a nonionic surfactant, an oily agent, as long as the stability of the system is not impaired. Substances, polyhydric alcohols, gums, water-soluble polymer compounds and derivatives thereof, preservatives, chelating agents, antioxidants, ultraviolet absorbers, pigments, fragrances, and the like can be appropriately blended.

[0015]

EXAMPLES The effects of the hair setting cosmetic composition according to the present invention will be described below in more detail with reference to examples. It should be noted that the present invention is not limited by the embodiment.

Examples 1 and 2, Comparative Examples 1 to 3 N-methacryloylethyl N, N-dimethylammonium-α-N-methylcarboxybetaine / butyl methacrylate copolymer (Mitsubishi Yuka Co., Ltd.) ): Yuka Former AM75-301 (30% ethanol solution) (trade name)) In order to find a set retention property in a high humidity state in a hair setting cosmetic , sodium carboxymethylcellulose, hydroxypropylmethylcellulose, hydroxypropyl Cellulose, hydroxyethylcellulose and the four types of additive materials were respectively blended, and the hair dressings of Examples 1 and 2 and Comparative Examples 1 and 2 were formulated according to the formulation in Table 1.
A cosmetic for cosmetics was prepared. In addition, the same thing as the above-mentioned Examples and Comparative Examples was prepared as Comparative Example 3 except that no additive material was blended.

[Table 1]

The hair setting cosmetics obtained in Examples 1 and 2 and Comparative Examples 1 to 3 were each subjected to a set retention test shown in the following test examples. Table 2 shows the results.

[Table 2]

( Examples 3 to 8 ) In the present invention, sodium carboxymethylcellulose, which was found to have excellent set retention in a high humidity state, was used, and the amount was varied as shown in Table 3.
The hair setting cosmetics of Examples 3 to 8 were prepared.

[Table 3]

For hair set obtained in Examples 3 to 8 above
Each cosmetic was subjected to a set retention test shown in the following test examples. Table 4 shows the results.

[Table 4]

[0020]

[Test Example] Using the hair setting cosmetic composition obtained in the above example, the set holding power to the hair was tested.

Set holding power The hair setting cosmetics obtained in the above Examples and Comparative Examples were evenly applied to a hair bundle having a length of 30 cm and a weight of about 2 g, using about 0.4 times the weight of the hair bundle. . After passing through a comb, the tube was wound around a glass tube having a diameter of 1 cm, allowed to dry at 70 ° C. for 2 hours, and then allowed to cool in a desiccator. Next, the hair bundle was removed from the glass tube, and the apparent length (L ₀ ) of the hair bundle was measured. After that, the hair bundle is hung in a thermo-hygrostat at 35 ° C and 90% humidity,
Two hours later, the hair bundle was taken out and the apparent length (L) was measured again. The set holding power of each hair setting cosmetic was calculated by the following equation (4).

Embedded image

As is clear from Table 2, the hair setting cosmetics containing sodium carboxymethylcellulose and hydroxypropylmethylcellulose (Examples 1 and 2) contain the hair setting cosmetics containing hydroxypropylcellulose or hydroxyethylcellulose ( specific ratio).
It can be seen that the set holding power is superior to those of Comparative Examples 1 and 2 ). In addition, hair care products that do not contain cellulose-based additives
It can be seen that, when compared to the cosmetics for cosmetics ( Comparative Example 3 ), extremely excellent set holding power is exhibited. As is clear from Table 4,
When the amount of sodium carboxymethylcellulose is 0.
When the content is less than 3% by weight ( Examples 6 and 7 ), the compounding amount is 0.1%.
It can be seen that the set holding power is weaker than that of the hair setting cosmetic ( Examples 3 to 5 ) of 3% by weight or more. The amount of sodium carboxymethylcellulose is 1.5% by weight.
( Example 8 ) In the case of ( Example 8 ), the blending amount was 1.0% by weight ( Example
5 ) It can be seen that there is no difference in the set holding force from the one in ( 5 ).

[0023]

As described in detail above, the present invention relates to N-meta
Acryloylethyl N, N-dimethylammonium-α-
N-methylcarboxybetaine methacrylate
Copolymer and carboxymethylcellulose and / or
Or N-methacryloylethyl for hair setting , characterized by containing a salt of
N, N-dimethylammonium-α-N-methylcarbo
Xybetaine-methacrylic acid ester copolymer
Since Roxypropyl methylcellulose is a hair setting cosmetic characterized by being contained as an essential component, as is clear from the above examples, even in a high humidity condition, the hair after hair setting has an extremely high set retention. It has an excellent effect that a force can be developed.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Nobunori Fujiwara 5-15, Jungen-cho, Chuo-ku, Osaka-shi Inside Mandom Central Research Institute Co., Ltd. (56) References JP-A-63-150215 (JP, A) JP-A-56-92812 (JP, A) JP-A-2-172907 (JP, A) JP-A-63-135319 (JP, A) JP-B-2-44446 (JP, B2) (58) Fields investigated (Int.Cl. ⁷ , DB name) A61K ⁷ /06-7/135

Claims (2)

(57) [Claims] An N-meta represented by the general formula 1
Acryloylethyl N, N-dimethylammonium-α-
N-methylcarboxybetaine methacrylate
Copolymer and carboxymethylcellulose and / or
For hair set cosmetic of the salt is characterized by comprising been contained as an essential component. Embedded image (However, in the general formula 1 (Chemical Formula 1), R represents 1 to 10 carbon atoms.
Represents an alkyl group, and n: m is from 10:90 to 50:50.
The number average molecular weight is 20,000 to 200,000. ) 2. An N-meta represented by the general formula 2
Acryloylethyl N, N-dimethylammonium-α-
N-methylcarboxybetaine methacrylate
A hair care composition comprising a copolymer and hydroxypropylmethylcellulose as essential components.
For cosmetics . Embedded image (However, in the general formula 2 (Chemical Formula 2), R represents 1 to 10 carbon atoms.
Represents an alkyl group, and n: m is from 10:90 to 50:50.
The number average molecular weight is 20,000 to 200,000. )