JP2822519B2 - Hair cosmetics - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to hair cosmetics containing silicone oil such as shampoos, rinses, hair blows, and hair creams.

[Problems to be solved by conventional technology and invention]

Conventionally, low-viscosity dimethyl silicone, high-viscosity dimethyl silicone, methyl phenyl silicone, polyoxygen, etc. have been added to hair cosmetics, such as shampoos, rinses, and split ends coating agents, for the purpose of imparting smoothness to hair and protecting split ends. It has been proposed to incorporate a silicone oil such as an alkylene glycol-modified silicone.

However, hair cosmetics containing such silicone oils impart good smoothness to hair,
On the other hand, it often loses moist feeling and gives a hair a feeling of dryness, and improvement in this point has been demanded.

In addition, especially when silicone oil is blended into a shampoo or hair blow composition, its dispersion stability is not sufficient,
Further, the silicone oil may damage the hair when the hair is blown at a high temperature using a dryer or the like.

The present invention solves various problems at the time of blending such silicone oil into hair cosmetics, and gives a smooth and good moist feeling to hair without impairing the effect of silicone oil blending, It is an object of the present invention to provide a hair cosmetic which has a high dispersion stability, a high dispersion stability, and an excellent effect of preventing thermal damage to hair.

[Means and actions for solving the problem]

The present inventors have made intensive studies in order to achieve the above object, and as a result, a hydroxyl group and a fatty acid are esterified to the 6th position of glucose and / or an alkyl glucoside having an alkyl group of 1 to 4 in silicone oil. It has been found that it is effective to use the obtained glucose fatty acid esters in combination.

That is, hair cosmetics using a combination of silicone oil and the above-mentioned specific glucose fatty acid esters give a smooth and moist feeling to the hair at the same time, reduce the feeling of moistening, and therefore have an excellent feeling of use. Even when the oil is blended into a shampoo or hair blow composition, the dispersion stability of the silicone oil is improved, and high-molecular-weight (high-viscosity) silicone oil with a viscosity of 10,000 centistokes (cs, 25 ° C) or more is especially used. The present inventors have found that when combined with the above specific glucose fatty acid esters, they provide an excellent heat damage preventing effect, and have accomplished the present invention.

 Hereinafter, the present invention will be described in more detail.

The hair cosmetic according to the present invention is prepared and applied as a shampoo, a rinse, a hair blow, a hair cream and the like, and is a combination of a silicone oil and the above-mentioned specific glucose fatty acid esters.

Here, silicone oils include dimethyl silicone, methyl phenyl silicone, amino-modified silicone, betaine-modified silicone, alcohol-modified silicone, polyether-modified silicone, fluorine-modified silicone, epoxy-modified silicone, mercapto-modified silicone, and carboxy-modified silicone having various viscosities. Various silicone oils conventionally used in hair cosmetics, such as fatty acid-modified silicones, can be used. In this case, the viscosity of these silicone oils is not particularly limited, but is usually 1
Those having a range of 88,000,000 centistokes (cs, 25 ° C.) are used. In this case, the viscosity is 1 as silicone oil
By using a high molecular weight silicone oil having a molecular weight of 000 cs or more in combination with the above-mentioned specific glucose fatty acid esters, an excellent heat damage preventing effect can be imparted to hair.

One of the above silicone oils can be used alone or in combination of two or more. The amount of the silicone oil can be appropriately selected according to the type of the hair cosmetic, and is usually 0.01 to 20.
% (% By weight, the same applies hereinafter). In this case, it is particularly preferable to use 0.1 to 10% for shampoo, 0.1 to 10% for rinsing, 0.01 to 5% for hair blow, and 0.1 to 20% for other hair cosmetics.

On the other hand, specific glucose fatty acid esters used in the present invention are obtained from glucose or alkyl glucosides and fatty acid derivatives having 6 to 22 carbon atoms, more preferably 8 to 18 fatty acids or lower alkyl esters thereof. Those are preferred.

In this case, as raw material glucose, corn,
Starch such as potato can be hydrolyzed with an acid or an enzyme, and then decolorized and purified. Examples of such substances include crystalline glucose, powdered glucose, granular glucose, and the like defined by JAS.

As the alkyl glucoside having 1 to 4 carbon atoms in the alkyl group of the raw material, the above glucose has 1 to 4 carbon atoms.
1-methyl glucoside, 1-ethyl glucoside, 1-butyl glucoside, and the like, and typical examples thereof include those commercially available from Staley.

On the other hand, if the fatty acid has 6 to 22 carbon atoms, it can be suitably used irrespective of natural, synthetic, saturated, unsaturated, straight-chain, branched, single, or mixed. Caprylic acid, decanoic acid, lauric acid, myristic acid, palmitic acid, stearic acid, linoleic acid, oleic acid obtained by hydrolyzing vegetable oils such as coconut oil, palm oil, tallow oil, rapeseed oil, soybean oil, etc. And unsaturated and straight-chain fatty acids such as undecanoic acid. In addition, as the synthetic fatty acid, a mixture of linear and branched fatty acids obtained by oxidizing a polymer of an olefin can be used, and a microorganism-derived fatty acid such as γ-linolenic acid is used. You can also. Further, as the lower ester of the fatty acid, an alkyl ester of the above fatty acid having 1 to 8 carbon atoms such as methyl, ethyl and propyl can be used, and a halide of the fatty acid can be used as a raw material.

The glucose fatty acid esters used in the present invention are obtained by esterifying the OH group at the 6-position of glucose or alkyl glucoside using these raw materials. -6-capryloyl monoester, glucose-6-decanoyl monoester, glucose-6
-Lauroyl monoester, glucose-6-myristoyl monoester, glucose-6-palmitoyl monoester, glucose-6-oleoyl monoester,
Glucose-6-γ-linoleate monoester is exemplified.

Examples of the alkyl glucosid fatty acid ester having 1 to 4 carbon atoms include 1-methyl-6-capryloyl glucose, 1-ethyl-6-capryloyl glucose,
-Ethyl-6-lauroylglucose, 1-butyl-6
-Capryloyl glucose, 1-ethyl-6-palmitoyl glucose, 1-ethyl-6-oleoyl glucose and the like.

In the present invention, one kind of the above-mentioned glucose fatty acid esters may be used alone, or two or more kinds may be used in combination.

Here, the glucose fatty acid esters used in the present invention may include diesters, triesters, etc. together with the monoester in which the 6-position of glucose is esterified.
It is preferable to use 90% or more, particularly 95% or more of the glucose fatty acid ester in order to achieve the above object of the present invention. Further, it is more preferable that the polyester content of the triester or higher is 1% or less, particularly 0.5% or less.

The method of synthesizing the glucose fatty acid esters,
There is no particular limitation, using the above raw materials, ester synthesis by lipase or the like, for example, a transesterification reaction between raw fats and oils and glucose, a transesterification reaction between lower alcohol esters of fatty acids and glucose, a reaction between fatty acids and glucose. Ester synthesis and the like, furthermore, a synthesis method using fatty acid chloride and glucose, and can be synthesized by various other known methods. Since many esters are produced, when obtaining a monoester, it may take time to fractionate and isolate after synthesis. Therefore, in this regard, the production of monoesters involves:
A method using a thermostable lipase previously proposed by the present applicant in Japanese Patent Application No. 1-210495, that is, a method in which a thermostable lipase is allowed to act on the above-mentioned glucose or the above-mentioned alkylglucoside and a fatty acid or a fatty acid derivative to effect esterification. It is suitable.

The amount of the glucose fatty acid ester can be variously selected, but is usually 0.1 to 20% of the whole composition, especially 0.5 to 20% for shampoo and hair cream, more preferably 1 to 10%, rinse and hair. 0 for blow.
It is suitable that the content is 1 to 10%, more preferably 0.5 to 5%.

The hair cosmetic composition of the present invention may contain, in addition to the above components, commonly used components according to the type of the cosmetic.

For example, in the case of a shampoo, sodium alkyl sulfate, α-olefin sulfonate, sodium alkyl ether sulfate, sulfosuccinic acid monoester, N
-Anionic activators such as acyl amino acid salts (the amount of which is usually 1
-20%), resistant activators such as alkylamidobetaines, alkylsulfobetaines, and alkylamino acids (imidazolinium betaines) (typically 0.5-20%), nonionic activities such as alkyldiethanolamide and polyoxyethylene hydrogenated castor oil (Typically 0.1 to 10%), cationic polymers such as cationized cellulose and quaternized amino alcohol (meth) acrylic acid polymers, and amphoteric polymers such as alkyl methacrylate polymers;
Nonionic polymers such as hydroxypropylcellulose, anionic polymers such as xanthan gum and sulfated cellulose, and higher alcohols can also be appropriately selected and blended. In the case of rinsing, the carbon number is 12
A cationic activator such as a quaternary ammonium salt having 1 to 2 saturated or unsaturated monovalent hydrocarbon groups, a cationized polymer, a higher alcohol, a higher alcohol ester, a phosphate ester, and the like; Similarly, various known components can be blended in hair blow, hair cream and the like. Further, a fragrance, a pigment, a bactericide, a preservative, various active ingredients, and the like can be added to the hair cosmetic.

〔The invention's effect〕

ADVANTAGE OF THE INVENTION According to the hair cosmetics of this invention, smoothness and a moist feeling are given to hair simultaneously, and the feeling of roughness can be suppressed, and the feeling of use is favorable. In addition, when silicone oil is blended into a shampoo, hair blow composition or the like, the dispersion stability is improved, and when a high molecular weight silicone is used, it has an excellent heat damage preventing effect, especially as a blowing agent.

Hereinafter, the present invention will be described specifically with reference to Examples and Comparative Examples, but the present invention is not limited to the following Examples. In the following examples, the viscosity is a value at 25 ° C.

[Examples 1 to 4, Comparative Examples 1 to 3] Rinses having the compositions shown in Table 1 were prepared, and their smoothness, moist feeling, and lack of roughness were evaluated by the following methods. The results are shown in the same table.

Evaluation method for smoothness, moist feeling, and smoothness Apply 2 g of a sample to a hair bundle of 25 cm in length and 10 g in weight, thoroughly comb it, rinse with warm water at 40 ° C, dry with a dryer, To evaluate. The evaluation criteria are as follows.

◎: Very good ○: Very good △: Somewhat good ×: Almost no effect [Examples 5 and 6, Comparative Examples 4 and 5] Shampoos shown in Table 2 were prepared, and their smoothness was determined.
The moist feeling and the lack of roughness were evaluated by the above method, and the dispersion stability was evaluated by the following method. The results are shown in the same table.

Dispersion stability The test sample was filled in a 50 ml glass container and stored at 50 ° C for 1 week.
Evaluation was made according to the following criteria.

：: No separation was observed, and no remarkable change was observed as compared to immediately after the compounding.

Δ: slight change in appearance such as slight turbidity is observed.

X: A remarkable change in appearance such as separation is observed.

[Examples 7 to 12, Comparative Examples 6 to 8] Hair blows having the compositions shown in Table 3 were prepared, and their smoothness, moist feeling, non-stickiness, and dispersion stability were evaluated by the above-described methods, and thermal damage was evaluated. The prevention effect was evaluated by the following method. The results are shown in the same table.

Heat Damage Prevention Effect 1 g of a sample was applied to a hair bundle having a length of 25 cm and a weight of 10 g, and after thoroughly combing the sample, the sample was spread over the entire hair bundle and dried.
Next, after performing brushing (2000 times) while blowing with a dryer (hair bundle surface temperature of 70 to 80 ° C.), the surface state of the hair was observed with a microscope (replica method) and evaluated according to the following criteria.

 A: Almost no change after probe lashing.

 ○: 〃 Slightly damaged.

 △: 〃 Somewhat damaged.

 ×: 〃 Significantly damaged.

Example 13 Rinse stearyltrimethylammonium chloride 1.0 wt% Stearyl alcohol 2.0 Polyoxyethylene stearyl ether 0.5 Dimethyl silicone (millions cs) 1.0 glucose-6-oleyl monoester 1.0 Isopropyl palmitate 0.5 Propylene glycol 5.0 Perfume qs Water Remaining 100.0 Smoothness ◎ Moist feeling ◎ No roughness ○ Effect of preventing heat damage ◎ [Example 14] Rinse Palmityl trimethylammonium bromide 1.0% by weight Palmityl alcohol 1.0 Polyoxyethylene alkylphenyl ether phosphate 0.2 Polyoxyethylene modified ( 40EO, 40PO) silicone 0.5 glucose-1-methyl-6-palmitoyl ester 1.0 propylene glycol 5.0 perfume qs water Balance 100.0 smoothness ◎ ~ ○ moistness ○ Pasatsuki name of ○ thermal damage preventing effect Example 15 Treatment of stearyltrimethylammonium chloride 1.0 wt% behenyl alcohol 3.0 Amino-modified silicone 1.0 glucose-6-myristoyl monoester 1.0 isoparaffin 0.5 Vaseline 0.5 Glycerin 10.0 UV absorber qs color containing qs fungicides qs water Balance 100.0 Smooth ◎ 〜 ○ Moist feeling ◎ 〜 ○ No roughness ◎ 〜 ○ Effect of preventing heat damage ○ [Example 16] Treatment Cocoylarginine ester pyrrolidone carboxylate
0.7% by weight Cetyl alcohol 4.3 Dimethyl silicone (100,000 cs) 0.5 Glucose-1-ethyl-6-cocoyl ester 1.0 Isoparaffin 3.0 Cationized cellulose 0.5 Protein hydrolyzate 0.2 Mica titanium 0.3 Persic oil 0.3 Fungicide Appropriate amount Propylene glycol 8.0 Water Remaining 100.0 Smoothness ◎ Moist feeling ◎ ~ ○ ぱ No rustiness ◎ Effect of preventing heat damage ◎ [Example 17] Hair blow Polyoxyethylone (40) butyl ether 1.0% by weight dimethyl silicon (100cs) 0.5 Cetyltrimethylammonium chloride 0.2 POE ( 40) Hardened castor oil 0.5 Glucose-6-myristoyl monoester 1.0 Methyl paraoxybenzoate 0.2 Fragrance 0.5 Ethanol 30.0 Water Remaining 100.0 Smoothness ◎ 〜 ○ Moist ◎ 〜 ○ ぱ No stickiness ○ Dispersion stability ○ Thermal damage prevention effect ○ (Example 18) Hair blow POP (40) POE (40) lauryl ether 0.5% by weight Dimethyl silicon (1 million cs) 1.0 POE (40) stearyl ether 0.5 Glucose-6-palmitoyl monoester 0.5 Fragrance 0.2 Ethanol 15.0 Water Remaining 100.0 Smoothness ◎ Moist feeling ◎の Non-stickiness ○ Dispersion stability ◎ 〜 ○ Heat damage prevention effect ◎ [Example 19] Hair cream Liquid paraffin 5.0% by weight Vaseline 2.0 Cetanol 1.0 POE (30) Stearyl ether 1.5 POE (20) Cetyl ether 0.3 Propylene glycol 5.0 Dimethylsilico (1000cs) 2.0 Glucose-1-ethyl-6-oleyl ester 1.5 Methyl parahydroxybenzoate 0.2 Perfume 0.5 Water Remaining 100.0 Smoothness ◎ 〜 ○ Moist feeling ◎ 〜 ○ No roughness ◎ 〜 ○ Heat damage prevention effect ○

Claims (3)

(57) [Claims] 1. A hair cosmetic containing a silicone oil, wherein the glucose and / or alkyl group has 1 to 4 carbon atoms.
Alkyl glucoside fatty acid esters,
A hair cosmetic comprising a fatty acid ester mainly composed of a glucose fatty acid ester obtained by esterifying the hydroxyl group at position 6 of the glucose or alkyl glucoside and a fatty acid. 2. The hair cosmetic according to claim 1, wherein the silicone oil contains a high-viscosity silicone oil having a viscosity at 25 ° C. of 10,000 centistokes or more. 3. The hair cosmetic according to claim 1, wherein the glucose fatty acid ester is esterified by acting a heat-resistant lipase on glucose or the alkyl glucoside and a fatty acid or a fatty acid derivative.