JP2539868B2 - Hair cosmetics - Google Patents

Description

TECHNICAL FIELD The present invention relates to a hair cosmetic composition that imparts excellent finishing properties to hair and forms a stable emulsion / dispersion system.

[Prior Art] Dimethylpolysiloxane is widely used in various hair cosmetics as an oil phase component that forms a uniform thin film on the surface of hair and imparts smoothness. However, dimethylpolysiloxane has a property that it is difficult to form a stable emulsion / dispersion system, and various studies have been made so far in order to solve this. For example, a method using POE (abbreviation of polyoxyethylene, hereinafter the same) sorbitan fatty acid ester as an emulsifier (Japanese Patent Publication No. 46-13279), a method using polyalkylene-modified silicone (Japanese Patent Laid-Open No. 60-12609), etc. have been proposed. .

However, when these emulsifiers are used for emulsification and dispersion, a small amount of the emulsifier can emulsify and disperse only a small amount of dimethylpolysiloxane to the extent that the effect of imparting smoothness is not noticeable. In addition, the stability was not fully satisfactory. When the amount of the emulsifier is increased, the stability of the system is improved, but at the same time, the hair has a sticky and heavy feeling of finishing. Thus, a dimethylpolysiloxane-containing hair cosmetic composition that satisfies both the finishing properties of dimethylpolysiloxane and the stability of the emulsion / dispersion system has not been obtained.

[Problems to be Solved by the Invention] The present invention has been made in view of the above circumstances, and is a dimethylpolysiloxane-containing hair which has excellent stability of an emulsion / dispersion system and imparts excellent finishing properties without stickiness to the hair. The purpose is to obtain cosmetics.

[Means for Solving the Problem] As a result of intensive studies to achieve the above object, the present inventor has stably emulsified and dispersed dimethylpolysiloxane by containing both sorbitan fatty acid ester and cationic cellulose, The inventors have found that a cosmetic for hair having an excellent finish without stickiness can be obtained, and completed the present invention.

The hair cosmetic composition of the present invention is characterized by containing dimethylpolysiloxane, sorbitan fatty acid ester and cationized cellulose. The dimethylpolysiloxane used in the present invention generally has a viscosity at 25 ° C. of 1 to 1000 cs (centistokes), preferably 2 to 500 cs.
The ones are good. If it exceeds 1000 cs, a heavy finish with a strong oiliness is obtained, and if it is less than 1 cs, the effect of imparting smoothness tends to be insufficient.

The amount of dimethylpolysiloxane blended is preferably 0.01 to 10% by weight based on the entire hair cosmetic composition. 0.01% by weight
If it is less than 10% by weight, the effect of imparting smoothness tends to be insufficient, and if it exceeds 10% by weight, a heavy oily feeling finish tends to be obtained.

Examples of the sorbitan fatty acid ester used in the present invention include sorbitan monooleate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate and sorbitan trioleate. However, EO or PO adducts of sorbitan fatty acid ester do not exert this effect.

The content of the sorbitan fatty acid ester is preferably 0.1 to 2.0% by weight based on the entire hair cosmetic composition. If it is less than 0.1% by weight, the stability of the system tends to be insufficient, 2.
If it exceeds 0% by weight, stickiness tends to occur.

As the cationized cellulose used in the present invention,
Ethers of hydroxyethyl cellulose and glycidyl trimethyl ammonium chloride are preferable, and for example, trade names: Rheogard G [Lion], POLYMER JR-30M-125 and POLYMER JR-30M-400 [UNION CARBIDE] are commercially available.

The amount of cationized cellulose blended is preferably 0.1 to 5% by weight with respect to the entire hair cosmetic composition of the present invention. 0.1
If it is less than 5% by weight, the effect on the stabilization of the emulsion / dispersion system tends to be insufficient, and if it exceeds 5% by weight, the stickiness tends to be large.

The hair cosmetic composition of the present invention may contain the following optional components within a range that does not affect the effects of the present invention. Examples of such an optional component include nonionic polymers such as polyvinylpyrrolidone and vinylpyrrolidone vinyl acetate copolymer, and methacrylic acid ester copolymer (trade name: Yucaformer
AM-75W) and other amphoteric polymers, dimethylpolysiloxane POE
Copolymers, dimethylpolysiroquin POP (abbreviation of polyoxypropylene, the same applies below), POP copolymers, silicon derivatives such as amino-modified polysiloxane, protein hydrolysates, propylene glycol, glycerin, polyethylene glycol, etc. Hydrophilic oils such as alcohol, POP / POE butyl ether, POP methyl glucose ether, POE methyl glucose ether, chlorhexidine paraben gluconate, bactericidal preservatives such as triclosan, cooling sensation agents such as l-menthol, vitamins, crude drugs, stearyl trimethyl chloride Cationic surfactants such as ammonium, distearyldimethylammonium chloride, stearyldimethylbenzylammonium chloride, nonionic surfactants,
Examples include anionic surfactants, ultraviolet absorbers, antioxidants, solvents such as ethanol and isopropanol, dyes, and fragrances.

[Effect of the Invention] The hair cosmetic composition of the present invention forms a stable emulsion / dispersion system,
It is possible to impart excellent finishing properties to hair.

[Examples] Next, the effects of the present invention will be specifically described by showing Examples of the present invention and Comparative Examples.

Prior to the description of each example, the test method adopted in each example will be described.

(1) Stability The prepared hair cosmetic composition was left standing in a constant temperature bath at 0 ° C. and 45 ° C. and at three conditions of room temperature, and the stability immediately after trial production and after a certain period of time was evaluated according to the following evaluation criteria.

Evaluation criteria ○: Separation and no aggregation △: 〃 Slightly present ×: 〃 Present (2) Hair non-stickiness Apply 0.5 g of hair cosmetics to a hair bundle with a length of 20 cm and a weight of 20 g, and the entire hair bundle The product was thoroughly combed in order to be familiar with it, and after drying, the non-stickiness was sensory evaluated by 10 testers according to the following evaluation criteria.

Evaluation Criteria ◯: Good Δ: Slightly Poor ×: Poor Example 1 14 kinds of hair cosmetics having the composition shown in Table 1 were prepared,
The performance was evaluated. The results are shown in the table. All the numerical values in the table are% by weight.

As is clear from the table below, the hair cosmetics (Examples 1 to 7) containing the three essential components of the present invention were all excellent in stability and non-stickiness of the hair.
The hair cosmetics lacking various components (Comparative Examples 1 to 3) could not satisfy both stability and non-stickiness of hair.

Claims (4)

(57) [Claims] 1. A hair cosmetic containing dimethylpolysiloxane, sorbitan fatty acid ester and cationized cellulose. 2. The compounding amount of the dimethylpolysiloxane is 0.
The hair cosmetic composition according to claim 1, which is 01 to 10% by weight. 3. The blending amount of the sorbitan fatty acid ester is
Claim 1 or 2 which is 0.1 to 2.0% by weight
Hair cosmetics described in paragraph. 4. The amount of the cationized cellulose blended is 0.1.
The hair cosmetic composition according to any one of claims 1 to 3, wherein the content is from 5.0 to 5.0% by weight.