JP2751503B2 - Shampoo composition - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a shampoo composition having an improved feeling of slipping.

[Problems to be solved by conventional technology and invention]

Conventionally, shampoo compositions have used ionic surfactants such as anionic surfactants and amphoteric surfactants in terms of detergency and foaming.

However, a shampoo composition using an anionic surfactant has a drawback of giving a slimy feeling when used, particularly when applied to hair, and when picked up by hand, and improvement in this point has been desired. .

[Means and actions for solving the problem]

The present inventor conducted various studies in order to respond to the above demand. As a result, the shampoo composition containing an anionic surfactant contained 11 to 20 carbon atoms in the acyl group, and contained glucose and / or glucose.
Alternatively, when a glucose fatty acid ester obtained by esterifying a 6-position hydroxyl group and a fatty acid of an alkyl glucoside having 1 to 4 carbon atoms in an alkyl group is blended, a shampoo composition containing an anionic surfactant is unexpectedly obtained. The inventors have found that peculiar nullness is remarkably reduced, and that the feeling of use is improved, and that the foamability is not inhibited, and the present invention has been accomplished.

In this case, glucose fatty acid esters are known as one kind of nonionic surfactant,
The above-mentioned effects are not achieved by other nonionic surfactants, and the esterification site of glucose or alkyl glucoside is at the 6-position, and the acyl group has 11 to 20 carbon atoms.
This is a specific effect of glucose fatty acid esters.

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

The shampoo composition according to the present invention is a fatty acid ester of an anionic surfactant and glucose having 11 to 20 carbon atoms in an acyl group and / or alkyl glucoside having 1 to 4 carbon atoms in an alkyl group. And a glucose fatty acid ester obtained by esterifying the hydroxyl group at the 6-position of the glucose or the alkyl glucoside with a fatty acid.

Here, as the anionic surfactant, any one commonly used in shampoo compositions can be used. For example, aliphatic surfactants such as fatty acid salts (soaps), glycerin monoalkyl ester monosulfates, coconut oil fatty acids and proteins such as collagen condensates, fatty acid condensates, alkyl sulfates, polyoxyethylene alkyl ether sulfates Higher alcohol surfactants such as salts and monoalkyl sulfosuccinates, as well as α-olefin sulfonates, acyl sarcosinates, acyl glutamates, paraffin sulfonates, succinic monoglycerides, monoglyculfate, POE coconut oil fatty acid amide ether sulfate, acyl Methyl taurine salt, N-acyl-N-methyl-β-alaninate and the like.

In the present invention, one kind of these anionic surfactants may be used alone, or two or more kinds may be used in combination. The amount is appropriately selected, but is usually 0.5 to 30% (% by weight, hereinafter the same) of the whole composition, particularly 1 to 2%.
0%.

On the other hand, glucose or alkyl glucoside used in the present invention has a 6-position esterification site and an acyl group having 11 to 20 carbon atoms, such as glucose fatty acid esters (glucose and / or alkyl group having 1 carbon atom). And (4) fatty acid esters of alkyl glucosides) are obtained from glucose or alkyl glucosides and fatty acid derivatives having 11 to 20 carbon atoms, more preferably 11 to 18 carbon atoms, or lower alkyl esters thereof.

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 include those commercially available from Stelly.

On the other hand, if the fatty acid has 11 to 20 carbon atoms, it can be suitably used regardless of natural, synthetic, saturated, unsaturated, linear, branched, single, mixed, etc. It may have one hydroxyl group. Specifically, lauric acid, myristic acid, palmitic acid, stearic acid, linoleic acid obtained by hydrolysis from vegetable oils such as coconut oil, palm oil, tallow oil, rapeseed oil, soybean oil, and animal oils as natural fatty acids , Oleic acid, capric acid, undecanoic acid and the like. 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.

Glucose fatty acid esters are synthesized from these raw materials using lipase and the like, for example, ester synthesis reaction between raw material fats and glucose, transesterification reaction between lower alcohol ester of fatty acid and glucose, and ester synthesis between fatty acid and glucose. It is preferable to synthesize by a known method, such as a synthesis method using fatty acid chloride and glucose, and the like.

In this case, the specific glucose fatty acid esters used in the present invention are those obtained by esterifying the OH group at the 6-position of glucose or alkyl glucoside.

Such glucose fatty acid esters include glucose-6-lauroyl monoester, glucose-6
-Myristoyl monoester, glucose-6-palmitoyl monoester, glucose-6-oleoyl monoester, glucose-6-γ-linoleate monoester and the like.

Examples of the alkyl glucosid fatty acid ester having 1 to 4 carbon atoms include 1-ethyl-6-lauroylglucose, 1-ethyl-6-myristoylglucose,
Ethyl-6-palmitoyl glucose, 1-ethyl-6
-Oleoyl glucose, 1-ethyl-6-linoleoyl 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 monoester and diester in which the 6-position of glucose is esterified, diester, triester and the like. It is preferable to use 90% or more, particularly 95% or more of glucose fatty acid ester in order to achieve the above-mentioned object of the present invention. Further, the polyester content of the triester or higher is preferably 1% or less, particularly preferably 0.5% or less. However, any of the above-mentioned known methods produces an ester having a low monoester content and a high polyester content. Therefore, when a monoester is obtained, labor may be required for fractionation and isolation after synthesis. Therefore, in this regard, the applicant of the present invention has previously disclosed in Japanese Patent Application No. Hei.
The method using a thermostable lipase proposed in No. 0495 is suitably adopted.

Various amounts of glucose fatty acid esters can be selected, but usually 0.1 to 30% of the whole composition, especially 1 to 30%.
~ 20%.

In the shampoo composition of the present invention, if necessary, in addition to the above-mentioned activators, other nonionic surfactants, amphoteric surfactants, and cationic surfactants can be blended. , Amine oxides and other foaming agents, higher fatty acid glycol esters, emulsifiers such as polymer emulsions, ethyl alcohol, propylene glycol, polyethylene glycol, hydrotropes such as glycerin, oils and fats, higher alcohol esters, lanolin derivatives, protein derivatives , Squalane,
Emollients such as cationized cellulose, cellulose derivatives, thickeners such as PVA, carbopol, PVP, salt, preservatives such as benzoic acid, benzoic acid esters, sorbic acid, EDTA, N
Sequestering agents such as TA and citric acid, pH of sodium phosphate etc.
One or more kinds of modifiers, such as an ultraviolet absorber, a dandruff agent, a pigment, and a fragrance, can be blended.

The shampoo composition of the present invention can be prepared into an appropriate form such as a cream or a liquid by a usual method using the above-mentioned components.

〔The invention's effect〕

INDUSTRIAL APPLICABILITY The shampoo composition of the present invention has good foaming properties, suppresses swelling, and has an excellent feeling in use.

Next, the effects of the present invention will be specifically described with reference to experimental examples.

[Experimental Example 1] A sample solution having the composition shown in Table 1 was taken in a normal amount in one hand, and the degree of nullness with a standard sample (a 15% aqueous solution of the following anionic surfactant (1)) taken in the other hand. The subject 20
Tactile comparisons were made by humans. The results are shown in the same table. The evaluation criteria are as follows.

：: Nulling was not recognized from the standard sample. (Nulliness is hardly felt) Δ: Same as the standard sample. X: Nulliness is recognized from the standard sample. However, when the test sample has no null than the standard sample, 1 point, when the equivalent is 0 point, and when the standard sample has no null than the test sample, -1 point A total score of 5 or more of the 20 participants was rated as ○, a score exceeding -5 and less than 5 was rated as △, and a score of -5 or less was rated as ×.

 Here, the surfactants used are as follows.

Anionic surfactant (1): Na—C ₁₄ .α-olefin sulfonate Anionic surfactant (2): polyoxyethylene (3) sodium lauryl ether sulfate amphoteric surfactant (1): amidopropyl betaine (R : Coconut oil) Amphoteric surfactant (2): imidazoline-type amphoteric surfactant (R: coconut oil) Cationic surfactant: C _16-18 trimethylammonium chloride Nonionic surfactant: coconut oil fatty acid diethanolamide No. 1 From the results shown in the table, it was confirmed that by blending glucose fatty acid esters having 11 to 20 carbon atoms in the acyl group, nullness of the anionic surfactant was eliminated.

Hereinafter, examples will be described, but the present invention is not limited to the following examples.

Example 1 Glucose-6-cocoyl monoester 5.0% Glucose-6-heptanoic acid monoester 5.0 Sodium polyoxyethylene lauryl ether sulfate 5.
0 Alkanolamide 5.0 Lanolin derivative 1.0 EDTA 0.2 Ethanol 0.5 Paraben 1.0 Fragrance 0.5 Dye Trace amount of purified water Residual 100.0% [Example 2] Glucose-6-cocoyl monoester 5.0% Polyoxyethylene lauryl ether sodium sulfate 1
0.0 Triethanolamine lauryl sulfate 5.0 Alkanolamide 3.0 Glycol distearate 1.0 Propylene glycol 0.2 Benzoic acid 1 Fragrance 0.5 Pigment Trace purified water Balance 100.0%

Claims (1)

(57) [Claims] 1. A shampoo composition containing an anionic surfactant, a fatty acid ester of glucose having an acyl group of 11 to 20 carbon atoms and / or an alkyl glucoside of an alkyl group having 1 to 4 carbon atoms. A shampoo composition comprising a glucose fatty acid ester obtained by esterifying the hydroxyl group at position 6 of the glucose or alkyl glucoside and a fatty acid.