JPH09175981A - Cosmetic containing alpha-alkylphenethyl-modified silicone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a cosmetic excellent in effect of providing skin and hair with softness, a moist feeling, a natural luster, retaining durability of the effect and excellent in safety, containing an α-alkylphenethyl-modified silicone having a prescribed structure. SOLUTION: This cosmetic contains preferably 0.1-2wt.% of an α- alkylphenethyl-modified silicone of the formula (R is an alkyl having a short chain length; R1 is a alkyl having a short chain length, phenyl, etc.; (m) is 5-2,000; (n) is 10-200). α-Alkylphenethyl-modified silicone having 100,000-200,000 molecular weight, 1/9-1/10 modification ratio shown by n/m in the formula and 10,000-50,000cp viscosity at 25 deg.C is preferable as the compound of the formula. The compound of the formula, for example, is obtained by adding an α- alkylstyrene to a cyclic polysiloxane containing a hydrogen atom bonded to an Si atom by using a platinum catalyst and (co)polymerizing a prepared cyclic α-alkylphenethyl-modified siloxane.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an α-alkylphenethyl-modified silicone-containing cosmetic, and more specifically, α
The present invention relates to a cosmetic composition containing an alkylphenethyl-modified silicone, which has a long-lasting effect of imparting smoothness, moisturizing feeling, and natural luster to the skin and hair and is further excellent in safety.

[0002]

2. Description of the Related Art In cosmetics, various silicone derivatives are used in order to impart smoothness, moisturizing feel and natural luster to the skin and hair. These silicone derivatives have the advantage that they are less sticky than hydrocarbons and ester oils, and thus have been widely used in cosmetics. Furthermore, by adding a silicone derivative to cosmetics, the water repellency of the cosmetics is improved, and the effect of improving the ability to protect the skin and hair and the durability of makeup are also obtained.

However, since silicone derivatives generally have low adsorptivity to adherends, when used in cosmetics and the like, they are easily removed from the skin and hair by friction and the like, and the above effects do not last. there were. Among the silicone derivatives, amino-modified silicone is said to have relatively high adsorptivity to the skin and hair, but the effect of general silicones to impart smoothness to the skin and hair is insufficient. It was

[0004] In hair cosmetics, a hair treating agent composition having a long-lasting hair splitting prevention effect and a gloss imparting effect using a specific silicone compound is further disclosed. (JP-A-4-66517,
JP-A-4-66518, JP-A-4-66519, JP-A-4-112813, JP-A-4-112814,
However, there is a concern that they may damage the hair because the pH to be used is not neutral and an oxidizing agent and a reducing agent are required.

Accordingly, the silicone derivative is sufficiently effective to impart smoothness, moisturizing feel and natural luster to the skin and hair, and sufficient adsorption to the skin and hair to maintain the effect lasting. In addition, there has been a demand for the development of cosmetics having excellent safety.

[0006]

SUMMARY OF THE INVENTION The present invention has been made from the above point of view, and has a sufficient effect of imparting smoothness, moisturizing feeling and natural luster to the skin and hair, and at the same time, maintaining the effect. It is an object of the present invention to provide a silicone derivative-containing cosmetic material that has sufficient adsorptivity to the skin and hair for keeping it and is excellent in safety.

[0007]

Means for Solving the Problems The inventors of the present invention have conducted extensive research to solve the above-mentioned problems with the persistence of effects of various silicone derivatives as a result, and as a result, have found that the side chain of a silicone having a basic structure like dimethyl silicone. By blending an α-alkylphenethyl-modified silicone with an α-alkylphenethyl group introduced into a cosmetic composition, it has a sufficient effect of imparting smoothness and moisturization to the skin and hair, and a natural luster, while maintaining this effect. The present invention has been completed by finding that a cosmetic having sufficient adsorptivity to the skin and hair for maintaining the property and having excellent safety can be obtained.

That is, the present invention is a cosmetic containing an α-alkylphenethyl modified silicone represented by the following general formula (I).

[0009]

Embedded image

However, in the formula (I), R represents a short chain length alkyl group, R ₁ independently represents a short chain length alkyl group, a phenyl group or an alkylphenyl group, and m is 50 to 50.
In 2000, n represents an integer of 10 to 200, respectively.

Here, a short chain alkyl group represented by R and R ₁
Together with the short chain length alkyl group represented by, having 1 to 6 carbon atoms,
It is preferably an alkyl group having 1 to 4 carbon atoms and optionally having a side chain, and the alkylphenyl group represented by R ₁ has a side chain having 1 to 6 carbon atoms, preferably 1 to 4 carbon atoms. A phenyl group substituted with an optionally substituted alkyl group.

The cosmetic of the present invention contains the above-mentioned α-alkylphenethyl-modified silicone, and as such an α-alkylphenethyl-modified silicone, specifically, R in the above general formula (I) is a methyl group. -Methylphenethyl modified silicone. Further, the preferable α-alkylphenethyl-modified silicone contained in the cosmetic of the present invention has a molecular weight of 70,000 to 250,000, preferably 10
10,000 to 200,000, and the modification ratio (n / in the above general formula (I)
m) is 1/20 to 1/5, preferably 1/9 to 1/10
And the viscosity at 25 ° C. is 5000 to 250,000.
α, which is cp, preferably 10,000 to 50,000 cp
-Alkylphenethyl modified silicones.

Α-which is blended in the cosmetic of the present invention
The alkylphenethyl-modified silicone is a usual production method, for example, α-alkylstyrene is added to a cyclic polysiloxane having a hydrogen atom bonded to a silicon atom using a platinum catalyst to obtain a cyclic α-alkylphenethyl-modified siloxane, Alternatively, it can be produced by polymerizing this and other cyclic siloxanes or siloxanes which are added as necessary in the presence of an alkali catalyst.

The cosmetic of the present invention comprises one or more of the above α-alkylphenethyl-modified silicones and various optional components usually contained in the cosmetic as raw material components, and a conventional method for producing a cosmetic. It is manufactured in the same manner. Also,
The dosage form of the cosmetic of the present invention is not particularly limited, and it can be manufactured as a dosage form similar to the dosage form of a normal cosmetic for skin or hair.

When such a cosmetic composition of the present invention is used, since the silicone derivative contained therein has an α-alkylphenethyl group, it is easily adsorbed on the skin or hair and is hard to be removed by washing, etc. Moreover, it is possible to form a film having excellent smoothness, moisturizing effect and gloss on the skin and hair. That is, the cosmetic of the present invention has an effect of imparting smoothness, moisturizing feeling, and luster to the skin and hair for a long time.

[0016]

Embodiments of the present invention will be described below. First, the α-alkylphenethyl modified silicone contained in the cosmetic of the present invention will be described.

<1> α-Alkylphenethyl Modified Silicone Used in the Present Invention The α-alkylphenethyl modified silicone contained in the cosmetic of the present invention is a silicone derivative represented by the above general formula (I) and is similar to dimethyl silicone. It has a structure in which an α-alkylphenethyl group is introduced into the side chain of the silicone having the basic structure of.

R and R ₁ in the formula of the α-alkylphenethyl-modified silicone represented by the general formula (I) are as described above, but as the α-alkylphenethyl-modified silicone used in the present invention, Preferred is an α-methylphenethyl-modified silicone in which R in the general formula (I) is a methyl group. In addition, among such α-methylphenethyl modified silicones, the compound represented by the general formula (I)
Α in which R ₁ is a short chain alkyl group or a phenyl group
-Methylphenethyl-modified silicone is more preferable in the cosmetic of the present invention, and further, it is more preferable that R ₁ is a methyl group.

The α-containing the cosmetic of the present invention contains
The alkylphenethyl-modified silicone has a molecular weight of 70,000 to 250,000, preferably 100,000 to 200,000, and a modification ratio (n / m in the general formula (I)) of 1/20 to 1 /.
5, preferably 1/9 to 1/10, and the viscosity at 25 ° C. is 5000 to 250,000 cp, preferably 10
It is preferably 000 to 50,000 cp.

If the molecular weight of the α-alkylphenethyl-modified silicone used in the present invention is less than 70,000, the adsorptivity and persistence of the cosmetic material containing it may be weakened due to the decrease in viscosity, and 25 Α- with a molecular weight exceeding 10,000
The alkylphenethyl-modified silicone has a high viscosity, and a cosmetic containing it may have a sticky feeling. With respect to the modification rate, in the α-alkylphenethyl modified silicone having a modification rate of less than 1/20, the properties as dimethyl silicone and the like are strengthened and become rubbery, and at the same time the viscous property is lost. May weaken. In addition, the modification rate is greater than 1/5 α
With an alkylphenethyl-modified silicone, the fluidity becomes too high, and the adsorptivity of the cosmetics containing it may be weakened. Regarding the viscosity, the viscosity at 25 ° C is 5000c.
For α-alkylphenethyl modified silicones of less than p,
Since the adsorptivity and the persistence of the cosmetics containing this may be weakened, and in the α-alkylphenethyl-modified silicone having a viscosity at 25 ° C. of over 250,000 cp, it becomes rubbery and loses its viscosity. The adsorptivity of cosmetics containing this may be weakened.

The α-alkylphenethyl-modified silicone contained in the cosmetic of the present invention can be produced by the same method as that for producing a silicone derivative. Here, a method for producing an α-alkylphenethyl-modified silicone will be described based on the following reaction formula by taking as an example an α-methylphenethyl-modified silicone in which R and all R ₁ in the above general formula (I) are methyl groups. To do.

[0022]

Embedded image

However, in Chemical formula 3, X represents an integer of 10 to 200, Y represents an integer, and 3X + 4Y represents 50 to 20.
00. First, cyclic heptamethyl hydrogen tetrasiloxane (compound (A) in the reaction formula) was charged with a platinum catalyst, the internal temperature was adjusted to about 80 ° C., and α-methylstyrene (compound (B) in the reaction formula) was added. The reaction product is added dropwise to give a reaction crude product containing a cyclic α-methylphenethyl modified siloxane (compound (C) in the reaction formula) as a reaction product. After completion of the dropping, the reaction crude product obtained was added to 90-
It is aged at 110 ° C. for about 2 hours. After completion of aging, the mixture is heated to 110 to 120 ° C. under reduced pressure to remove unreacted substances. This is purified and filtered to obtain a purified product of cyclic α-methylphenethyl modified siloxane.

Next, the cyclic α-methylphenethyl-modified siloxane (C), octamethylcyclotetrasiloxane and hexamethyldisiloxane were charged in predetermined amounts (in the above reaction formula, a molar ratio of X: Y: 1), and an alkali catalyst was added. After the addition, a polymerization reaction is performed at 150 to 160 ° C. for about 6 hours to obtain a reaction crude product containing α-methylphenethyl modified silicone (compound (D) in the reaction formula) as a reaction product.
The catalyst contained in the reaction crude product is neutralized with an acid, etc.
Heat to 50-160 ° C. to remove unreacted materials. This is purified and filtered to obtain a desired product of the α-methylphenethyl-modified silicone. The α-methylphenethyl-modified silicone represented by (D) in the above reaction formula is a compound wherein R and all R _{1 in} the above general formula (I) are methyl groups, m is 3X + 4Y, and n is X. An α-methylphenethyl modified silicone.

<2> Cosmetics of the Present Invention The cosmetics of the present invention contain one or more of the above α-alkylphenethyl modified silicones.

The content of the α-alkylphenethyl modified silicone in the cosmetic of the present invention is preferably 0.05.
It is -10% by weight, more preferably 0.1-2% by weight. If the content is less than 0.05% by weight, the effect of imparting smoothness, moisturizing feeling and gloss to the skin and hair may be poor. On the other hand, if it exceeds 10% by weight, it may be difficult to mix it in a stable dosage form due to easy separation, or the produced cosmetic may have too high a viscosity to be applied to the skin or hair.

The cosmetics of the present invention include, for example, lotions, emulsions, creams, aqueous gels, oil gels, ointments,
Under makeup, foundation, powder,
Usually, skin such as lipstick, eyeliner, hair tonic, hair oil, shampoo, conditioner, pomade, hair treatment, hair pack, hair liquid, styling foam, hair spray, split ends coat agent, hair color, permanent wave agent, bleaching agent. Those used as cosmetics for hair and hair are mentioned. The dosage form is not particularly limited. In addition, these cosmetics can be produced by the same method as that for ordinary cosmetics except that the above-mentioned α-alkylphenethyl-modified silicone of the present invention is blended.

In the cosmetic of the present invention, in addition to the above α-alkylphenethyl-modified silicone, oils, surfactants, alcohols, polymer compounds, water, and other components usually used in cosmetics are used. It may be appropriately mixed depending on the dosage form, purpose and the like.

The above oils include liquid paraffin,
Liquid oils such as squalane, cetyl 2-ethylhexanoate, isopropyl myristate, olive oil, castor oil; semi-solid to solid fats such as petrolatum, solid para, beef tallow, lanolin, beeswax, whale wax, cholesterol; cetanol, behenyl alcohol, etc. Higher alcohols; higher fatty acids such as palmitic acid and stearic acid; fluorine-based oil agents such as perfluoropolyether; silicone derivatives other than the α-alkylphenethyl-modified silicone used in the present invention.

As the above-mentioned surfactant, sorbitan fatty acid ester, glycerin fatty acid ester, polyoxyethylene (hereinafter abbreviated as "POE") sorbitan fatty acid ester, POE glycerin fatty acid ester, POE alkyl ether, POE polyoxypropylene alkyl ether, POE Nonionic surfactants such as polyoxypropylene copolymer, POE alkyl phenyl ether, POE hydrogenated castor oil, polyethylene glycol fatty acid ester, decaglycerin fatty acid ester, alkyl diethanolamide; alkyl sulfate, POE alkyl ether sulfate, POE alkyl ether Acetate, alkyl phosphate, POE alkyl ether phosphate, higher fatty acid salt, higher fatty acid hydrolyzed collagen salt, amino acid anionic surfactant; sulfosuccinic acid surfactant, olefin Anionic surfactants such as ruphonate; amphoteric surfactants such as lecithin, betaine acetate, imidazolinium betaine; cationic such as alkyltrimethylammonium chloride, dialkyldimethylammonium chloride, alkyldimethylbenzylammonium chloride Surfactants may be mentioned.

Alcohols include monohydric alcohols such as ethanol, propanol and benzyl alcohol;
Examples include polyhydric alcohols such as 1,3-butylene glycol, propylene glycol, dipropylene glycol, glycerin, polyethylene glycol, and sorbitol.

Examples of the polymer compound include polyvinylpyrrolidone, vinylpyrrolidone-vinyl acetate copolymer, acrylic resin alkanolamine, vinyl acetate-crotonic acid copolymer, methyl vinyl ether-maleic acid monoalkyl ester copolymer, N-methacryloyl. Ethyl N, N-dimethylammonium α-N-methylcarboxybetaine / methacrylic acid alkyl ester copolymer, diethyl vinylpyrrolidone sulfate-N, N'-dimethylaminoethyl methacrylic acid copolymer, hydroxyethylcellulose dimethyldiallylammonium chloride, hydroxy Examples include ethyl cellulose hydroxypropyl trimethyl ammonium chloride ether, carboxyvinyl polymer, carboxymethyl cellulose salt, xanthan gum, hydroxyethyl cellulose and the like.

Further, as the above-mentioned other components, humectants such as amino acids and hyaluronic acid; ultraviolet absorbers such as oxybenzone and para-aminobenzoic acid ester; antioxidants such as tocopherol and dibutylhydroxytoluene; paraben, phenoxyethanol and the like. Antiseptic; bactericides such as isopropylmethylphenol and trichlorocarban; hydrolysates of proteins such as collagen, keratin and silk (for example, hydrolyzed collagen: Promois W42R manufactured by Seiwa Chemical Industry Co., Ltd.); citric acid, citric acid PH adjusting agents such as sodium, anti-dandruff agents such as zinc pyrithione and piroctone olamine, plant extract, anti-inflammatory agents such as dipotassium glycyrrhizinate; propellants such as dimethyl ether and LPG; Na
Inorganic salts such as Cl; pearling agents such as triethylene glycol distearate, chelating agents, dyes, and fragrances.

[0034]

Embodiments of the present invention will be described below. First, a production example of the α-alkylphenethyl modified silicone to be added to the cosmetic of the present invention will be described.

[0035]

[Production Example 1] α-methylphenethyl-modified silicone heptamethylhydrogencyclotetrasiloxane 5
Charge 6.4 g of chloroplatinic acid to 0.5 g and keep the internal temperature at 80 ° C.
Then, 50 g of α-methylstyrene was added dropwise to carry out the addition reaction. After completion of the dropping, the reaction crude product obtained is 100
It was aged at 0 ° C for a further 2 hours. After aging, 12 under reduced pressure
The mixture was heated to 0 ° C. to remove unreacted substances, and this was purified and filtered to obtain 76 g of a purified cyclic α-methylphenethyl modified siloxane.

50 g of the obtained cyclic α-methylphenethyl modified siloxane, 435 g of octamethylcyclotetrasiloxane and 30 g of hexamethyldisiloxane were charged,
Add 1 g of potassium hydroxide as a catalyst and add at 6
The polymerization reaction was performed for an hour. Dilute hydrochloric acid was added to the reaction crude product until the pH became neutral to neutralize it, then 150
It heated at 0 degreeC and removed the unreacted material. This is purified and filtered and α
A purified product of methylphenethyl-modified silicone was obtained.

The α-methylphenethyl-modified silicone thus obtained has a structure in which R and all R _{1 in} the above general formula (I) are methyl groups and has a molecular weight of 1750.
00, modification rate 1 / 9.3, viscosity 18300 cp (2
5 ° C.).

[0038]

[Production Example 2] α-methylphenethyl-modified silicone heptamethylhydrogencyclotetrasiloxane 5
Charge 6.4 g of chloroplatinic acid to 0.5 g and keep the internal temperature at 80 ° C.
Then, 50 g of α-methylstyrene was added dropwise to carry out the addition reaction. After completion of the dropping, the reaction crude product obtained is 100
It was aged at 0 ° C for a further 2 hours. After aging, 12 under reduced pressure
The mixture was heated to 0 ° C. to remove unreacted substances, and this was purified and filtered to obtain 76 g of a purified cyclic α-methylphenethyl modified siloxane.

50 g of the obtained cyclic α-methylphenethyl-modified siloxane, 260 g of octamethylcyclotetrasiloxane and 30 g of hexamethyldisiloxane were charged,
Add 1 g of potassium hydroxide as a catalyst and add at 6
The polymerization reaction was performed for an hour. Dilute hydrochloric acid was added to the reaction crude product until the pH became neutral to neutralize it, then 150
It heated at 0 degreeC and removed the unreacted material. This is purified and filtered and α
A purified product of methylphenethyl-modified silicone was obtained.

The α-methylphenethyl-modified silicone thus obtained had a molecular weight of 47600 and a modification ratio of 1 /.
5. The viscosity was 2300 cp (25 ° C.).

<Evaluation of α-Methylphenethyl Modified Silicone in Production Example> The α-methylphenethyl modified silicones obtained in Production Examples 1 and 2 and various conventional silicone derivatives shown in Table 1 (the numbers in parentheses are 25). The viscosity at 0 ° C.) was used to evaluate the adsorptivity and smoothness imparted to the hair. In addition, α-obtained in Production Example 1
A safety test was conducted by a human patch test using methylphenethyl-modified silicone. Among the silicone derivatives used as conventional silicone derivatives, the amino-modified silicone is XF42 manufactured by Toshiba Silicone Co., Ltd.
-703 (amine equivalent 1700), the epoxy-modified silicone was Toshiba Silicone Co., Ltd., XF3965 (epoxy equivalent 1000).

(1) Adsorption rate to hair A hair bundle having a length of 12 cm and a weight of 2 g was washed with a 35% aqueous solution of sodium polyoxyethylene lauryl sulfate (LES), dried at 40 ° C. for 1 day, and then at 20 ° C. After being left at 50% humidity for 1 day, the weight of the hair bundle was measured and used as the weight before treatment (W ₀ ). Next, this hair bundle was immersed in 50 g of hair essence consisting of 10% by weight of the α-methylphenethyl-modified silicone derivative obtained in Production Example 1 and 90% by weight of decamethylcyclopentasiloxane for 1 hour, and then the excess hair bundle was attached to the hair bundle. Wipe off the natural hair essence with a towel,
It was dried at 40 ° C. for 1 day. Then, while combing this hair bundle, it was washed three times with a 35% aqueous solution of LES, and again at 40 ° C.
After drying for 1 day at 20 ° C. and 50% humidity for 1 day, the weight (W ₁ ) after the treatment was measured. In addition, as a blank, the weight of the hair bundle before and after the treatment when the hair bundle was treated in the same manner except that the hair essence containing the silicone derivative was not treated in the treatment of the hair bundle was calculated, and B ₀ ( Before treatment) and B ₁ (after treatment).

Each measurement value (W ₀ ,
A value obtained by subtracting the weight change rate of the blank from the weight change rate when the silicone derivative was treated was obtained from W ₁ , B ₀ , B ₁ ) by the following formula, and this was taken as the adsorption rate.

[0044]

[Equation 1] Adsorption rate (%) = ((W ₁ −W ₀ ) / W ₀ ) × 100−
((B ₁ -B ₀ ) / B ₀ ) × 100 Further, regarding various silicone derivatives shown in Table 1, this is used as a hair essence containing instead of the above α-methylphenethyl modified silicone derivative, and this hair essence is used. The hair bundle was treated in the same manner as above, and the weight of the hair bundle before and after the treatment was measured to obtain the adsorption rate.
The results are shown in Table 1.

(2) Smoothness increase rate Five hairs were sampled from each hair bundle whose weight after treatment in the above (1) was measured, and a friction tester (KES-SE) manufactured by Carttec Co., Ltd. The friction resistance value was measured with.
Using these values, the rate of increase in smoothness of the hair treated with various silicone derivatives with respect to untreated hair was determined and evaluated by the following formula. The results are shown in Table 1.

[0046]

[Equation 2] Smoothness increase rate (%) = ((M ₀ −M ₁ ) /
M ₀ ) × 100 M ₀ : Friction resistance value of hair after blank measurement (untreated) (average value of 5 hairs) M ₁ : Friction resistance value of hair treated with silicone derivative (average value of 5 hairs)

[0047]

[Table 1]

As is clear from these results, the α-alkylphenethyl-modified silicone compounded in the cosmetic composition of the present invention is superior in the adsorptivity to the hair and smooth to the hair, as compared with the conventional silicone derivatives. It is also excellent in the function of giving.

(3) Safety test by human patch test Hair essence containing the α-methylphenethyl-modified silicone derivative obtained in the above Production Example 1 at various concentrations shown in Table 2 in the components shown in Table 2 was prepared. For comparison, a hair essence containing no α-methylphenethyl-modified silicone derivative was prepared and a safety test was conducted by the human patch test. Fifty test subjects were subjected to a closed patch for 24 hours with a patch test plaster coated with 0.05 g of one of the above hair essences. This closed patch was applied to each of the above hair essences, and after the closed patch was completed, the specimen was removed from the test site, and the skin reaction was observed 24 hours and 48 hours thereafter. 2 from the end of closed patch for each hair essence
The positive rate was calculated from the number of people who were determined to be positive in accordance with the Japanese patch test criteria by skin observation after 4 hours and 48 hours. The results are shown in the bottom column of Table 2.

[0050]

[Table 2]

From these results, none of the hair essences obtained in Production Example 1 containing the α-methylphenethyl-modified silicone derivative in various contents showed any irritation to humans in the patch test. It can be said that the α-alkylphenethyl-modified silicone compounded in the above cosmetics has excellent safety.

Next, examples of cosmetics containing the α-methylphenethyl-modified silicone obtained in the above production examples will be described.

[0053]

Examples 1 and 2 Hair Oil Hair oil was produced by dissolving or stirring and dispersing the components shown in Table 3 with stirring. Further, in the same manner, a hair oil of a comparative example was produced in which a conventional silicone derivative was blended in place of the α-methylphenethyl-modified silicone of the above production example.
The amino-modified silicone and epoxy-modified silicone compounded in the hair oil of Comparative Example were the same as the silicone derivatives used in the evaluation of the α-methylphenethyl-modified silicone of the above Production Example.

[0054]

[Table 3]

[0055]

Examples 3 and 4 Shampoo The components shown in Table 4 were mixed and heated to 80 ° C. to homogenize with stirring, and then cooled to room temperature with stirring to produce a shampoo. Further, similarly, a shampoo of a comparative example was produced in which a conventional silicone derivative was blended in place of the α-methylphenethyl-modified silicone of the above production example. The amino-modified silicone compounded in the shampoo of Comparative Example was
Shin-Etsu Chemical Co., Ltd., KF-867 (Amine equivalent 170
0), epoxy-modified silicone is manufactured by Shin-Etsu Chemical Co., Ltd.
It was KF-100T (epoxy equivalent 4000).

[0056]

[Table 4]

[0057]

[Examples 5 and 6] Hair rinse The components A and B shown in Table 5 were dissolved by heating at 80 ° C,
The component B was added to the component A with stirring, and then cooled to room temperature with stirring to produce a hair rinse. Similarly, a hair rinse of Comparative Example was produced in which a conventional silicone derivative was blended in place of the α-methylphenethyl-modified silicone of the above Production Example. The amino-modified silicone compounded in the hair rinse of Comparative Example was manufactured by Shin-Etsu Chemical Co., Ltd.
Manufactured by KF-8005 (amine equivalent weight 11,000), mercapto-modified silicone manufactured by Shin-Etsu Chemical Co., Ltd., X-22
It was -980 (mercapto group equivalent 1,900).

[0058]

[Table 5]

[0059]

[Examples 7 and 8] Foamed hair styling agent Components A and B shown in Table 6 were dissolved by heating at 80 ° C,
The component B was added to the component A with stirring, then cooled to room temperature with stirring, and the component C was further added thereto to produce an emulsion. This emulsion was packed in an aerosol can and filled with LPG as a component D to obtain a foam-shaped hair styling material. Further, in the same manner, a foam-type hairdressing preparation of Comparative Example was produced in which a conventional silicone derivative was blended in place of the α-methylphenethyl-modified silicone of the above Production Example. The amino-modified silicone compounded in the hairdressing composition of Comparative Example was manufactured by Shin-Etsu Chemical Co., Ltd.
Manufactured by KF-8005 (amine equivalent weight 11,000), the polyether-modified silicone was SH3772C manufactured by Toray Dow Corning.

[0060]

[Table 6]

[0061]

Examples 9 and 10 Hair Spray The components shown in Table 7 were dissolved by stirring to obtain a hair spray solution. This solution was filled in an aerosol can and filled with LPG to produce a hair spray.

Similarly, a hair spray of a comparative example was produced in which a conventional silicone derivative was blended in place of the α-methylphenethyl-modified silicone of the above production example. The amino-modified silicone blended in the hair spray of Comparative Example was KF-8005 (amine equivalent weight 11,000) manufactured by Shin-Etsu Chemical Co., Ltd.

[0063]

[Table 7]

[0064]

[Examples 11 and 12] Cream (for skin) Components A and B shown in Table 8 were dissolved by heating at 80 ° C, respectively, and then component B was added to component A with stirring, and then cooled to room temperature with stirring. To produce a skin cream.

Similarly, a cream of Comparative Example was prepared in which a conventional silicone derivative was blended in place of the α-methylphenethyl-modified silicone of the above Production Example. In addition,
The amino-modified silicone compounded in the cream of Comparative Example is
Shin-Etsu Chemical Co., Ltd., KF-8005 (amine equivalent 11,
000), and the epoxy-modified silicone was XF3965 (epoxy equivalent 1000) manufactured by Toshiba Silicone Co., Ltd.

[0066]

[Table 8]

<Evaluation of Cosmetics of the Present Invention> The cosmetics obtained in the above Examples and Comparative Examples were evaluated for smoothness, moisturizing effect and gloss imparting effect.

(1) Hair Oil Eight hair bundles were prepared, and a certain amount of the hair oil obtained in each of the above Examples and Comparative Examples was uniformly applied to each of the hair bundles, and then a 35% aqueous solution of LES was used. Washed with. After washing
The smoothness of the dried tufts was sensory-evaluated on a scale of 5 by 8 experts. In the sensory evaluation method, the score was an integer value of 1 to 5, and the higher the score, the smoother the evaluation. As a result, the average value of the scores of 8 persons is shown in Table 9.

[0069]

[Table 9]

(2) Shampoo Five hair bundles were prepared, and each of the hair bundles was washed with the shampoos obtained in the above Examples and Comparative Examples, and further washed with a 35% aqueous solution of LES. After washing, the dried hair bundle was sensory-evaluated for smoothness and luster by eight experts in five levels. In the sensory evaluation method, the score was an integer value of 1 to 5, and the higher the score, the smoother or glossy the product was evaluated. As a result, the average value of the scores of 8 people is shown in Table 1.
0 is shown.

[0071]

[Table 10]

(3) Hair Rinse Five hair bundles were prepared, and a certain amount of the hair rinse obtained in each of the above Examples and Comparative Examples was uniformly applied to each of the hair bundles and rinsed. % Aqueous solution. After washing, the dried hair bundle was sensory-evaluated for smoothness and luster by eight experts in five levels. In the sensory evaluation method, the score was an integer value of 1 to 5, and the higher the score, the smoother or glossy the product was evaluated. As a result, the average value of the scores of 8 persons is shown in Table 11.

[0073]

[Table 11]

(4) Foam-shaped hair styling agent Five hair bundles were prepared, and a certain amount of the foam-shaped hair styling agent obtained in each of the above Examples and Comparative Examples was uniformly applied to each of the hair tresses and dried. After that, it was washed with a 35% aqueous solution of LES. After washing, the dried tress is smooth and glossy 8
A human expert conducted a sensory evaluation on a scale of five. In the sensory evaluation method, the score was an integer value of 1 to 5, and the higher the score, the smoother or glossy the product was evaluated. as a result,
Table 12 shows the average values of the scores of 8 persons.

[0075]

[Table 12]

(5) Hairspray Five hair bundles were prepared, and a certain amount of the hairspray obtained in each of the above Examples and Comparative Examples was uniformly sprayed on each of the hair bundles and dried. Smoothness about the hair bundle,
The gloss was organoleptically evaluated by 8 experts in 5 grades. The method of sensory evaluation, the score is an integer value of 1 to 5, the higher the score,
It was evaluated as smooth or glossy. After that, the hair bundle was washed with a 35% aqueous solution of LES. After washing, the dried hair bundle was sensory-evaluated for smoothness and luster by eight experts in the same manner as above. As a result, the average value of the scores of 8 persons is shown in Table 13 before washing and in Table 14 after washing.

[0077]

[Table 13]

[0078]

[Table 14]

(6) Cream (for skin) 10 specialist panelists applied the creams of the above Examples and Comparative Examples to the face, and the smoothness after application and the moist feeling were evaluated in five levels. It was In the sensory evaluation method, the score was an integer value of 1 to 5, and the higher the score, the smoother or the moist feeling was evaluated. As a result, the average value of the scores of 10 persons is shown in Table 15.

[0080]

[Table 15]

As is clear from these results, the cosmetics of the present invention containing the α-methylphenethyl-modified silicone obtained in the above-mentioned production example are smooth and moisturized on the adherend such as skin and hair, and have a glossy finish. The effect of imparting the effect is equal to or more than that of the cosmetics of the comparative example in which the conventional silicone derivative is blended, and the durability of the effect is far superior to that of the cosmetics of the comparative example.

Further, in the hair bundle after each test using the above-mentioned cosmetic for hair of the present invention, there was no damage to the hair, and it was confirmed that the cosmetic of the present invention is excellent in safety.

[0083]

EFFECT OF THE INVENTION The cosmetic composition of the present invention has a sufficient effect of imparting smoothness, moisturizing feeling and natural luster to the skin and hair, and also has an adsorptivity to the skin and hair for keeping the effect lasting. It has a sufficient amount and is highly safe, so it can be used continuously for a long period of time.

Claims (3)

[Claims] 1. A cosmetic containing an α-alkylphenethyl-modified silicone represented by the following general formula (I). Embedded image However, in the formula (I), R represents a short chain length alkyl group, and R ₁
Each independently represent a short chain length alkyl group, a phenyl group or an alkylphenyl group, and m is 50 to 2000,
n represents an integer of 10 to 200, respectively. 2. The cosmetic according to claim 1, wherein the α-alkylphenethyl-modified silicone is an α-methylphenethyl-modified silicone having R in the general formula (I) as a methyl group. 3. The α-alkylphenethyl modified silicone has a molecular weight of 70,000 to 250,000 and a modification rate (n / m in the general formula (I)) of 1/20 to 1/5.
The cosmetic according to claim 1 or 2, which has a viscosity at 5000C of 5000 to 250,000 cp.