JPH03197414A - Hair cosmetic - Google Patents

Abstract

PURPOSE:To obtain a cosmetic giving smoothness and moist feeling to the hair, effective in suppressing the loosening of hair, having high dispersibility by causing excellent effect to prevent the thermal damage of hair by using a silicone oil in combination with a glucose fatty acid ester. CONSTITUTION:The objective cosmetic is produced by using (A) 0.01-20wt.% of a silicone oil, e.g. dimethylsilicone, methylphenylsilicone or amino-modified silicone having various viscosities in combination with (B) 0.1-20wt.% of an ester of glucose and/or an alkylglucoside having 1-4C alkyl group and a 6-22C (preferably 8-18C) fatty acid. Excellent effect for preventing the thermal damage of hair can be attained by using a high molecular weight silicone oil having a viscosity of >=10,000cs as the component A. The component B preferably contains >=95wt.% of monoester and <=0.5wt.% of triesters or higher polyesters.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to hair cosmetics containing silicone oil, such as shampoo rinses and hair blow creams.

[Problems to be solved by conventional techniques and inventions] Conventionally,
Hair cosmetics such as shampoos, conditioners, and split-end coating agents: 1 Low-viscosity dimethyl silicone, high-viscosity dimethyl silicone, methylphenyl silicone, polyoxyalkylene glycol for the purpose of adding smoothness to hair and protecting split ends. It has been proposed to incorporate silicone oil such as modified silicone.

However, hair cosmetics containing such silicone oil,
Although it imparts good smoothness to the hair, on the other hand, it often loses its moist feel or makes the hair feel frizzy, and improvements in this respect have been sought.

In addition, especially when silicone oil is blended into shampoos or hair blow compositions, its dispersion stability is not sufficient, and silicone oil can also damage hair when blow drying it at high temperatures using a hair dryer, etc. .

The present invention solves all the various problems that arise when such silicone oil is blended into hair cosmetics, and provides smoothness and good moisturizing to the hair without impairing the effects of silicone oil blending, and reduces frizz. The purpose of the present invention is to provide a hair cosmetic that suppresses hair sensitization, has high dispersion stability, and has an excellent effect of preventing heat damage to hair.

[Means and effects for solving the problem] - 1. As a result of intensive studies to achieve the above object, the present inventors have found that silicone oil contains glucose and/or alkyl groups having 1 to 4 carbon atoms. It has been found that it is effective to use alkyl glucosite fatty acid esters (hereinafter collectively referred to as glucose fatty acid esters).

In other words, a hair cosmetic that uses a combination of silicone oil and glucose fatty acid esters gives hair smoothness and moisture at the same time, suppresses the feeling of dryness, and therefore has an excellent feeling of use. The dispersion stability of silicone oil is improved even when blended into shampoos and hair blow compositions, and especially when high molecular weight (high viscosity) silicone oil is combined with glucose fatty acid esters, it has an excellent heat damage prevention effect. The present invention has been made based on the discovery that this provides the following properties.

The present invention will be explained in more detail below.

The hair cosmetics according to the present invention can be prepared as shampoos, conditioners, hair blowers, hair creams, etc.

It is applicable and uses silicone oil and glucose fatty acid esters together.

Here, the silicone oil includes dimethyl silicone of various viscosities, methylphenyl silicone, amino-modified silicone, betaine-modified silicone, alcohol-modified silicone, polyether-modified silicone, fluorine-modified silicone, epoxy-modified silicone, and mercap-1 modified silicone. Various silicone oils conventionally used in hair cosmetics can be used, such as carboxy-modified silicone, fatty acid-modified silicone, etc. In this case, the viscosity of these silicone oils is not particularly limited, but is usually 1
~8,0000,000 centistokes (CS
.

25°C) is used. In this case, by using a high molecular weight silicone oil with a viscosity of 10.00cs or more as the silicone oil in combination with glucose fatty acid esters, it is possible to provide excellent heat damage prevention effects to the hair.

The above-mentioned silicone oils can be used alone or in combination of two or more, and the amount of the silicone oil can be selected as appropriate depending on the type of hair cosmetic.
Usually, it can be 0.01 to 20% (weight %, the same applies hereinafter). In this case, especially in the case of shampoo, 0.1~
10%, 0 for rinse. It is preferably 1 to 10%, 0.01 to 5% for hair blowers, and 0.1 to 20% for other hair cosmetics.

On the other hand, the glucose fatty acid esters (fatty acid esters of glucose and/or alkyl glucosides in which the alkyl group has 1 to 4 carbon atoms) used in the present invention include glucose or alkyl glucosides and 6 to 22 carbon atoms;
More preferably, those obtained from 8 to 18 fatty acids or fatty acid derivatives such as lower alkyl esters thereof are suitable.

In this case, the raw material glucose can be one obtained by hydrolyzing starch from corn, potato, etc. with acid or enzymes, decolorizing it, and purifying it. Examples of such substances include crystalline glucose, powdered glucose, and granulated butuctose defined by JAS.

4-Also, as the raw material alkyl glucosite whose alkyl group has 1 to 4 carbon atoms, the above-mentioned glucose is added with a fatty acid alcohol having 1 to 4 carbon atoms, such as 1-methyl glucozide, 1-ethyl glucosite, etc. , 1-butyl glucodide, etc., and those commercially available from stearic acid are representative examples.

On the other hand, any fatty acid having 6 to 22 carbon atoms can be suitably used, regardless of whether it is natural, synthetic, saturated, unsaturated, straight chain, branched, single, or mixed, and natural fatty acids Caprylic acid, decanoic acid, lauric acid, myristic acid, palmitic acid, stearic acid, linoleic acid, and oleic acid obtained by hydrolyzing vegetable oils such as coconut oil, palm oil, tallow oil, rapeseed oil, and soybean oil, and animal oils. Examples include saturated and unsaturated linear fatty acids such as , capric acid, and undecanoic acid. In addition, as synthetic fatty acids, mixtures of linear and branched fatty acids obtained by oxidizing olefin polymers can be used, and fatty acids derived from microorganisms such as γ-lylunic acid can be used. -We can do it together. Furthermore, lower esters of fatty acids include those having 1 to 1 carbon atoms such as methyl, ethyl, and propyl of the above-mentioned fatty acids.
Alkyl esters having 8 can be used, and fatty acid halides can also be used as raw materials.

Glucose fatty acid esters can be produced by ester synthesis using lipase or the like using these raw materials, such as transesterification of raw oils and fats with glucose, transesterification of lower alcohol esters of fatty acids with glucose, and ester synthesis of fatty acids and glucose. It is preferable to synthesize by a method such as , a synthesis method using fatty acid chloride and glucose, and various other known methods.

In this case, in the present invention, the glucose fatty acid ester has a monoester content of 90% or more, particularly 95% or more.
% or more of glucose fatty acid ester is preferable in order to achieve the above-mentioned object of the present invention. Further, the polyester content of triester or higher is 1% or less, especially 0.
It is more preferable that the content is 5% or less, but since all of the above-mentioned known methods produce esters with a low monoester content and a high content of tri- or higher polyesters, in order to obtain monoesters, fractionation after synthesis is necessary. , isolation may be laborious. Therefore, in this respect, the method using heat-stable lipase, which was previously proposed by the present applicant in Japanese Patent Application No. 1210495, is preferably adopted for the production of monoester.

In addition, as the glucose fatty acid monoester, one in which the OH group at the 6-position of glucose is esterified is preferable.

Such glucose fatty acid esters include glucose-6-caprylic monoester, glucose-6-zocan monoester, glucose-6-lauryl monoester, glucose-6-myristyl monoester, and glucose-6-balmityl monoester. , glucose-6
-oleyl monoester, glucose-6-γ-lyl-
Examples include tomonoester and the like.

In addition, examples of alkyl glucoside fatty acid esters having 1 to 4 carbon atoms include 1-methyl-6-cap7-lylglucose, 1-ethyl-6-caprylglucose, 1-ethyl-6-laurylglucose, and 1-butylglucose. −
Examples include 6-caprylglucose, 1-ethyl-6-balmitylglucose, and 1-ethyl-6-oleylglucose.

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

The amount of glucose fatty acid esters can be selected in various ways, but it is usually 0.1 to 20% of the total composition, especially 0.5 to 20% for shampoos and hair creams.
More preferably, it is 1 to 10%, and in the case of rinsing and hair blowing, it is 0.1 to 10%, and more preferably 0.5 to 5%.

In addition to the above-mentioned ingredients, the hair cosmetic composition of the present invention can contain commonly used ingredients depending on the type of cosmetic composition.

For example, in the case of shampoo, anionic active agents such as sodium alkyl sulfates, α-olefin sulfonates, sodium 8-alkyl ether sulfates, sulfosuccinic acid monoesters, and N-acylamino acid salts (
Amphoteric active agents such as alkylamidobetaine, alkylsulfobetaine, and alkyl amino acids (imidazolinium betaine) (compounding amount usually 0.5 to 20%)
20%), alkyl jetanolamide, polyoxyethylene hydrogenated castor oil, and other nonionic surfactants (usually 0%)
．． 1 to 10%), and cationic polymers such as cationized cellulose and quaternized amino alcohol (meth)acrylic acid polymers, amphoteric polymers such as methacrylic acid alkyl ester polymers, nonionic polymers such as hydroxypropyl cellulose, and xanthan gum. Anionic polymers such as sulfated cellulose, higher alcohols, etc. can also be appropriately selected and blended. In the case of rinsing, cationic activators such as quaternary ammonium salts having one or two saturated or unsaturated monovalent hydrocarbon groups having 12 to 22 carbon atoms, cationic polymers, higher alcohols,
Higher alcohol esters, 9-10-phosphate esters, etc. can be blended, and various known ingredients can be blended in hair blowers, hair creams, and the like. Furthermore, the hair cosmetic may contain fragrances, pigments, bactericides, preservatives, various active ingredients, and the like.

〔Effect of the invention〕

According to the hair cosmetic of the present invention, it is possible to simultaneously impart smoothness and moisturization to the hair while suppressing the feeling of frizz, and the hair cosmetic has a good feel when used. In addition, the dispersion stability is improved when silicone oil is blended into shampoos, hair blowing compositions, etc., and furthermore, when high molecular weight silicone is used, it has an excellent heat damage prevention effect especially as a blowing agent.

EXAMPLES Hereinafter, the present invention will be specifically explained by showing examples and comparative examples, but the present invention is not limited to the following examples. In addition, in the following example, the viscosity is a value at 25°C.

[Examples 1 to 4. Comparative Examples 1 to 3] A rinse having the composition shown in Table 1 was prepared, and its smoothness,
Moist feeling and lack of dryness were evaluated using the following method. The results are shown in the same table.

Smoothness, moistness, and non-friction evaluation i-method - Apply 2g of the sample to a hair bundle of length 25 x 2 log weight, comb it thoroughly, rinse with warm water at 40'C, and dry with a hair dryer. , sensory evaluation is performed. The evaluation criteria are as follows.

◎: Very good O: Fairly good Δ: Fairly good △: Hardly any effect 1 2- [Examples 5 and 6, Comparative Examples 4 and 5] Shampoos shown in Table 2 were prepared and their smoothness was evaluated. , moist feeling, and lack of crispness were evaluated by the above method, and dispersion stability was evaluated by the following method. The results are shown in the same table.

Fill a 50 m container with 9 people to rig the dispersion test sample and heat it at 50'C.
The appearance of the samples stored for one week was visually observed and evaluated using the following criteria. 10: There is no separation, and no significant change is observed compared to immediately after blending.

Δ: Slight changes in appearance such as slight turbidity were observed.

X: Significant changes in appearance such as separation are observed.

4 [Examples 7 to 12. Comparative Examples 6 to 8] Hair blowers having the compositions shown in Table 3 were prepared, and their smoothness, moist feel, lack of looseness, and dispersion stability were evaluated by the above methods, and the heat damage prevention effect was evaluated by the following method. evaluated. The results are shown in the same table.

1 g of the sample was applied to a hair bundle with a length of 25 an and a weight of Log, and after thoroughly combing the hair, the sample was spread over the entire hair bundle and dried. Next, use a hair dryer (hair bundle surface temperature: 70~
After brushing (2000 times) while blowing at 80°C, the surface condition of the hair was observed under a microscope (replica method) and evaluated using the following criteria.

◎There is almost no change after nibrow brushing.

0: Slightly damaged.

△: Slightly damaged.

×: It is quite damaged.

[Example 13] Rinse Stearyl chloride trimethyl ammonium stearyl alcohol polyoxyethylene stearyl ether dimethyl silicone (1,000,000 C8) Glucose-6-oleyl motuester Isoprobyl palmitate Propylene glycol Fragrance 1.0% by weight 2.0 0.5 1.0 1.0 0.5 5.0 Appropriate amount Smoothness, moist feeling, no flaking, heat damage prevention effect [Example 14] Rinse Palmityl trimethylammonium bromide Palmityl alcohol 1.0% by weight 1.0 Polyoxy Ethylene-modified (40E0,40PO) silicone 0.5 Glucose-1-methyl-6-balmityl ester 1.0 Propylene glycol fragrance 5.0 Appropriate amount 100.0 Smoothness, moist feeling, no flaking, heat damage prevention effect [implemented] Example 15] Treatment Stearyl trimethyl ammonium chloride Behenyl alcohol Amino modified silicone Glucose-6-myristylmotuester Isoparaffin Petrolatum Glycerin Ultraviolet absorber ◎～○ 1.0% by weight 3.0 1.0 1.0 0.5 0.5 10 .0 Appropriate amount Pigment disinfectant Water Smoothness Moist feeling Unprecedented heat damage prevention effect [Example 16] Treatment Cetyl alcohol dimethyl silicone (100,000 cs) Glucose-1-ethyl-6-cocoyl nistyl isoparaffin Cationized cellulose protein Hydrolyzate Mica Titanium Persic Oil Disinfectant 20 - Appropriate amount Appropriate amount remaining 100.0 O-0 O-0 ◎～○ 4.3 0.5 1.0 3.0 0.5 0.2 0.3 0. 3 Appropriate amount of propylene glycol Water Smoothness Moist feeling No flaking Heat damage prevention effect 8.0 Remaining 100.0 ◎ ◎～0 ◎ ◎ [Example 17] Hair blow polyoxyethylene (40) Butyl ether dimethyl silicone (100cs) Chloride Cetyltrimethylammonium P OE (40) Hydrogenated castor oil glucose-6-myristyl monoester Methyl paraoxybenzoate Flavor Ethanol Water 1.0% by weight 0.5 0.2 0.5 1.0 0.2 0.5 30, O Remaining 100.0 @~0 ◎~O Smoothness and moist feeling 1- □00 No frizz Dispersion stability Heat damage prevention effect [Example 18] Hair brow p Op (40) p OE (40) Lauryl ether dimethyl silicone (1 million as) P OE (40) Stearyl ether glucose-6
- Balmitol monoester fragrance Ethanol○ 0.5% by weight ], O 0.5 0.5 0.2 15.0 Smoothness, moistness, non-stickiness, dispersion stability, heat damage prevention effect [Example 19] Hair cream Liquid paraffin 100.0 ◎ ◎ ◎～O ◎ 5.0% by weight Vaseline cetanol P OE (30) Stearyl ether P OE (2
) Cetyl ether propylene glycol dimethyl silicone (1000 cs) Glucose-1-ethyl-6-oleylnystyl methyl paraoxybenzoate Fragranced water Smoothness Moist feeling No flaking Heat damage prevention effect 2.0 1.0 1.5 0 .3 5.0 2.0 1.5 0.2 0.5 Remaining 100.0 ◎〜○ ◎〜O ◎〜O

Claims (1)

[Claims] 1. A hair cosmetic comprising a combination of silicone oil and glucose and/or a fatty acid ester of an alkyl glucoside whose alkyl group has 1 to 4 carbon atoms.