JP2568082B2 - Hairdressing composition - Google Patents

Description

The present invention relates to a hair styling composition, and more particularly to a hairdressing composition for a set, which comprises a specific amino-modified organopolysiloxane emulsion and a specific amphoteric polymer compound. The present invention relates to a hairdressing composition.

[Conventional technology]

Various polymer compounds are used for a hair styling material for setting hair. Amphoteric polymer compounds are known as polymer compounds. The amphoteric polymer compound usually shows a good setting property, but has a drawback that it is sticky when dried and under high humidity. Further, there is a drawback that the setting force is lowered under high humidity.

On the other hand, in recent years, it has been proposed to use amino-modified organopolysiloxanes for hair care such as shampoos and rinses. Amino-modified organopolysiloxanes are said to provide hair with shine, smoothness, combability and resistance to washing. Hair styling products using amino-modified organopolysiloxane have also been proposed. The aqueous composition useful in hair conditioning disclosed in JP 56-45406 A comprises about 0.2-10% amino-modified polysiloxane, about 0.01-10% cationic polymer and an aqueous carrier. However, the cationic polymer is not settable and the invention disclosed therein provides only conditioning effects.

[Problems to be Solved by the Invention]

INDUSTRIAL APPLICABILITY The present invention is not sticky when applied to hair and in a high humidity environment, has excellent set-retaining properties, and gives natural supple hair that does not cause the hair to feel stiff and natural, and provides good combability and luster, and It is to provide a hair styling product having excellent storage stability.

[Means for solving the problem]

The above-mentioned object of the present invention is to emulsify a cyclic diorganopolysiloxane and an amino group-containing organotrialkoxysilane in water with a cationic surfactant, followed by emulsion polymerization using an alkali metal hydroxide as a catalyst and neutralizing with an acid. Amino-modified organopolysiloxane emulsion made by about 0.05
~ 10 wt% and the following general formula (In the formula, R ₁ , R ₃ and R ₄ are C _{1 to} C ₁₈ alkyl groups, and R ₂ is C _{1 to} C
The alkylene groups of ₄ , x and y are integers based on molecular weight and the average molecular weight of the polymer is about 10,000-100,000. ) Amphoteric polymer compound represented by about 0.05 to 10% by weight
A hair styling composition comprising:

In the present invention, by using a specific amino-modified organopolysiloxane in combination with the above-mentioned amphoteric polymer compound, generally, the disadvantages of the amphoteric polymer compound, namely, stickiness at the time of drying and under high humidity, and reduction in setting force are reduced. Remarkably suppressed. The styled hair is supple and has good combability and gloss. In addition, the composition of the present invention is stable, and in particular, aggregation of amino-modified organopolysiloxane does not occur even during long-term storage. The stability is quite good after storage for 3 months at 40 ° C.

Conventionally, it has been known that, in a hair styling product that uses an aqueous carrier composed of water and ethanol, silicone that has been made hydrophilic by ether modification is added to give the hair gloss and combability. Even if this ether-modified silicone is combined with the above-mentioned amphoteric polymer compound, suppression of stickiness cannot be achieved.

Further, when amino-modified silicone oil is used instead of the amino-modified organopolysiloxane emulsion of the present invention, the compatibility with the system is poor, so that manufacturing difficulties are observed and the specific stability is also poor. . Further, the effects of the present invention such as the set holding power and the good combability are also insufficient, which is not preferable.

The amino-modified organopolysiloxane ermajon itself of the present invention is known, and a cyclic diorganopolysiloxane and an amino group-containing organotrialkoxysilane are emulsified in water with a cationic surfactant and then emulsified with an alkali metal hydroxide as a catalyst. It can be obtained by polymerizing and neutralizing with an acid. The cyclic diorganopolysiloxane has the formula [In the formula, R ¹ is an alkyl group such as a methyl group, an ethyl group or a propyl group, and n is an integer of 3 to 8. ] Is illustrated. Examples of the amino group-containing organotrialkoxysilane include those represented by the formula (R ² O) ₃ SiR ³ NHR ⁴ NH ₂ [wherein R ² is an alkyl group such as a methyl group, an ethyl group, or a propyl group, and R ³ , R ⁴ Is an alkylene group such as methylene group, ethylene group, propylene group, butylene group, R ³ , R ⁴
May be the same or different].

Specific examples of the amino group-containing organotrialkoxysilane include (CH ₃ O) ₃ SiCH ₂ CH ₂ CH ₂ NHCH ₂ CH ₂ NH ₂ and (CH ₃
CH ₂ O) ₃ SiCH ₂ CH ₂ CH ₂ NHCH ₂ CH ₂ NH ₂ , There is.

A representative example of the structure of the amino-modified organopolysiloxane of the present invention is the US Cosmetic Ingredient Dictionary (Thid
Edition), page 18, AMODIMETHICONE (In the formula, p and q are numbers satisfying a molecular weight of 3,000 to 50,000), or a hydroxyl group thereof is substituted with an alkoxy group, and the molecular weight is 3,000 to 50,000.

Examples of commercially available preferred amino-modified organopolysiloxane emulsions include SM8702C (Toray Silicone Co., Ltd.) and DC929 (Dow Corning Co., Ltd.).

As a preferable cationic surfactant used in the emulsion polymerization of the above amino-modified organopolysiloxane, a compound represented by the formula R ⁵ _n (CH ₃ ) _4-n N ⁺ Cl ^— [wherein R ⁵ has an average carbon number of 10 to 30] Is an alkyl group of
Is 1 to 2 on average], but is not limited thereto. In addition, a nonionic surfactant having an HLB of 8 or more is added as a stabilizer, if necessary. Cationic surfactants are required for good emulsification.

Examples of alkali metal hydroxides used in emulsion polymerization include KOH, NaOH, LiOH and the like. Examples of the acid for neutralization include acetic acid, phosphoric acid, oxalic acid, hydrochloric acid, sulfuric acid and the like.

The content of the amino-modified organopolysiloxane in the amino-modified organopolysiloxane emulsion is usually 20
-60% by weight, in particular 30-50% by weight.

The amphoteric polymer compound itself used in the present invention is known,
Used for hair set. As a commercial product,
There are different R ₁ alkyl groups, different x / y ratios, and different grades with different water solubility and film strength. It can be appropriately determined according to preference or hair quality. The average molecular weight is about 10,000-100,
000, for example tens of thousands.

To the hair styling composition of the present invention, in addition to the above amino-modified organopolysiloxane and amphoteric polymer compound, a small amount of nonionic surfactant, fragrance and the like can be added. As the carrier, it is preferable to use an aqueous carrier composed of water and a lower alcohol, or water. For example, in a set lotion and a liquid hair styling agent, water and a lower alcohol can be used in approximately equal amounts, and in a foam hair styling agent (mousse), water can be used.

〔The invention's effect〕

According to the present invention, there is obtained a hair styling product for finishing hair having suitable elasticity without causing stickiness and a decrease in set holding power when dry and under high humidity. A hair styling product having such characteristics is made possible only by a specific combination of components in the present invention.

〔Example〕

 The present invention will be further described below with reference to examples.

In the examples, the set holding effect of the hair styling composition and the evaluation of the practical test were carried out as follows.

(1) Set holding effect 0.5g of a hairdressing preparation sample is evenly applied to a hair bundle of 15cm in length and 1.0g in weight, wound on a rod with a diameter of 2cm, and left in a thermostatic chamber at 45 ° C for 6 hours to complete. Dried. After drying, remove the rod, measure the apparent length (l) of the hair bundle, then hang the hair bundle in a constant temperature and humidity chamber at a temperature of 25 ° C and a humidity of 90%, remove it after 30 minutes, and remove the hair bundle again. The apparent length (l ₀ ) was measured. The set holding force was calculated by the following formula.

Therefore, the closer this value is to 100, the stronger the set holding power.

(2) Practical test Hair styling was performed by 20 female test subjects using each set composition and the control sample. After that, the subject himself or herself sensory-evaluated the following test items and answered the questionnaire.

(3) Storage stability test The storage stability was evaluated by observing the appearance when stored at 40 ° C for 3 months and checking the presence or absence of phase separation and discoloration or odor.

Example 1, Comparative Example 1, Control (Set Lotion) The amino-modified organopolysiloxane emulsion used in the examples was made as follows.

5 parts of hexadecyltrimethylammonium chloride were dissolved in 60 parts of water. In a separate container, 1.5 parts of γ- (β-aminoethylnoaminopropyltriethoxysilane and 38.5 parts of octamethylcyclotetrasiloxane were premixed. Then, the two were mixed with stirring, and the mixture was mixed with a colloid mill emulsifier to obtain 5 parts. The mixture was passed twice at intervals of / 1000 inches, then adjusted to pH 12.5 with sodium hydroxide, heated at 80 ° C. for 3 hours, kept at 30 ° C. for 6 hours, and then adjusted to pH 7 with acetic acid.
Next, for stabilization, 0.5 part of polyoxyethylene (9) nonylphenyl ether was added and stirred to obtain an amino-modified organopolysiloxane emulsion.

This amino-modified organosiloxane emulsion is
In the above formula, it is a cationic aqueous emulsion containing p-100, q = 2 and an amino-modified polysiloxane having a molecular weight of about 8000 as a main component and containing about 40% by weight thereof.

The amphoteric polymer compound used is represented by the formula: R ₁ = −C _{4
H 9, R 2 = -C 2} H 4 -, R 3, R 4 = -CH 3, x = 300, y = 150
And the average molecular weight is about 70,000. The compositions of the example and control set lotions are shown below.

Preparation Method Polyoxyethylene hydrogenated castor oil, a fragrance and an amphoteric polymer compound or an anionic polymer compound were added to ethyl alcohol, and uniformly dissolved with stirring. Next, a liquid in which an amino-modified polysiloxane emulsion was uniformly dispersed was added to water, and the mixture was stirred and mixed uniformly to prepare a set lotion.

The set lotion of Example 1 of the present invention had good stability when stored at 40 ° C. for 3 months. However, in the set lotion of Comparative Example 1, agglomerates were formed immediately after the production and the storage stability was poor.

Therefore, using the set lotion of Example 1 and the control, which had good storage stability, the set retention effect and the practical test evaluation were performed in comparison with the control, and the results are shown in the following table.

Example 2 (Liquid Hairdressing) The amino-modified polysiloxane emulsion is the same as in Example 1. Amphoteric polymer compound is Yukaformer AM75
(Trademark: Mitsubishi Petrochemical Co., Ltd.) was used. Component weight amino-modified polysiloxane emulsion 5.0 (parts by weight) amphoteric polymer compound 3.0 polyoxyethylene polyoxypropylene alkylene monobutyl ether 8.0 Ethyl alcohol 45.0 Perfume 0.5 Water 38.5 Preparation method amphoteric polymer compound in ethyl alcohol, polyoxyethylene polyoxypropylene Monobutyl ether and a fragrance were added and uniformly dissolved with stirring. Next, a liquid in which an amino-modified polysiloxane emulsion was uniformly dispersed was added to water, and uniformly stirred and mixed to prepare.

The liquid hair styling product thus obtained was a translucent milky white liquid.

Hair styling was performed using the finished hair styling product, and a supple, good comb-like finish without stickiness was obtained.
It was also excellent in set retention (85%). Also, 3 at 40 ℃
The stability when stored for a month was also good.

Example 3 (foam hair styling agent) The amino-modified polysiloxane emulsion and the amphoteric polymer compound are the same as in Example 2. Component weight amino-modified polysiloxane emulsion 2.0 (parts by weight) amphoteric polymer compound 5.0 Polyoxyethylene cetyl ether 1.0 Cetyl alcohol 1.0 Perfume 0.2 Water 91.8 Preparation method polyoxyethylene cetyl ether, uniformly mixed and dissolved at about 70 ° C. The cetyl alcohol did. Separately, add a solution of amphoteric polymer compound to water heated to about 70 ° C,
Emulsify, cool to room temperature, add amino modified polysiloxane emulsion and stir and mix uniformly to prepare. 95 parts of the obtained stock solution is filled in an aerosol can and 5 parts of liquefied petroleum gas is filled to obtain a foamy hair styling material.

Hair styling was performed using the finished foamy hair styling product, it did not become sticky when dried, and it had a suppleness, good combability, and a natural elasticity finish. Set holding power was 86%.
It was excellent.

Claims (1)

(57) [Claims] 1. A cyclic diorganopolysiloxane and an amino group-containing organotrialkoxysilane are emulsified in water with a cationic surfactant, and then emulsion-polymerized with an alkali metal hydroxide as a catalyst and neutralized with an acid. About 0.05-10% by weight of amino-modified organopolysiloxane emulsion,
And the following general formula (In the formula, R ₁ , R ₃ and R ₄ are C _{1 to} C ₁₈ alkyl groups, and R ₂ is C _{1 to} C
The alkylene groups of ₄ , x and y are integers based on molecular weight and the average molecular weight of the polymer is about 10,000-100,000. ) Amphoteric polymer compound represented by about 0.05 to 10% by weight
A hair styling composition comprising: