JP2003252733A - Shampoo composition for dyed hair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a shampoo composition for the dyed hair which has excellent prevention effect on fading and change in color of the dyed hair and excellent foamability at pH 5.0-6.0. <P>SOLUTION: The shampoo composition for the dyed hair comprises (a) a sulfuric ester-based surfactant, (b) an acylglutamic acid-type surfactant and (c) an imidazoline-based surfactant and has pH 5.0-6.0. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shampoo composition for hair that has been dyed and treated, which is excellent in preventing fading and discoloration of hair that has been dyed and has good foaming properties.

[0002]

2. Description of the Related Art In recent years, with increasing consumer awareness of hair dyeing, many hair dyes of various dosage forms and colors have been marketed, and hair dyes have come to be used in a wide range of age groups. .
The demand of these hair dye users is to improve the color lasting of the hair after the hair dyeing treatment. The discoloration and discoloration of the hair that has been dyed are caused by discoloration due to structural changes of the oxidation dye and acid dye and color loss due to separation from the hair.

Conventionally, as a method for preventing these discoloration and fading, a component for improving the fastness is blended in the hair dye composition (Japanese Patent Laid-Open No. 61-218512, Japanese Patent Laid-Open No. 4-360817). There are many attempts such as proposing a care agent to be used before and after hair dyeing (JP-A-6-92824, etc.), but depending on the type of shampoo used, a sufficiently satisfactory effect can be obtained. There were cases where it was not possible to obtain it. As described above, the influence of shampoo on discoloration and fading is great, and under the present circumstances, it is earnestly desired to develop a shampoo that is resistant to discoloration and fading. In response to such needs, there has been proposed a shampoo or the like in which the pH is adjusted to an acidic range or a specific surfactant is used (Japanese Patent Laid-Open No. 7-233033, Japanese Patent Laid-Open No. 2001-2405).
No. 17, etc.). However, in these conventionally proposed shampoos, the surfactants used are originally those having a weak foaming property, those having an insufficient foaming property in an acidic region, particularly at pH 6 or less, and expensive. For this reason, many general-purpose shampoos can be added only in small amounts,
It was not completely satisfactory in terms of foaming.

[0004]

SUMMARY OF THE INVENTION With the above-mentioned background as the background, the object of the present invention is to provide a shampoo composition for hair that has been dyed and treated, which is excellent in preventing discoloration and discoloration of hair that has been dyed and has good foaming properties. To provide things.

[0005]

Means for Solving the Problems The present inventor has conducted diligent research in view of such circumstances, and as a result, a sulfate ester type surfactant, an acylglutamic acid type surfactant, and an imidazoline type amphoteric surfactant are selected. Contains and pH of 5.0
It has been found that a hair dyeing shampoo composition having a hair color of 6.0 solves the above problems.
The present invention has been completed.

That is, the first aspect of the present invention comprises (a) a sulfate ester type surfactant, (b) an acylglutamic acid type surfactant, and (c) an imidazoline type amphoteric surfactant, and has a pH value. Is 5.0 to 6.0. A shampoo composition for hair which has been dyed.

The second aspect of the present invention is the shampoo composition for hair dyed according to claim 1, wherein (a) the sulfate ester surfactant is an alkyl sulfate salt.

The third aspect of the present invention is the hair dyeing treatment according to claim 1, wherein the amount of the (a) sulfate ester surfactant is 5.0% by mass or more and less than 50% by mass of the total amount of the active ingredients for washing. In a shampoo composition for hair.

In the fourth aspect of the present invention, the mass ratio of (a) a sulfate ester type surfactant, (b) an acylglutamic acid type surfactant and (c) an imidazoline type amphoteric surfactant is (a) <. It is {(b) + (c)} and is the shampoo composition for hair dyed according to claim 1.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The constitution of the present invention will be described in detail below.

Examples of the (a) sulfate ester surfactant used in the present invention include alkylsulfates such as triethanolamine lauryl sulfate and ammonium lauryl sulfate, and P.
OE (3) sodium lauryl ether sulfate, POE
(1) Alkyl (11,13,15) ether sulfate alkyl ether sulfate such as triethanolamine, POE
(2) Examples include higher fatty acid alkanolamide sulfates such as coconut oil fatty acid monoethanolamide sodium sulfate, and of these, alkylsulfates such as lauryl sulfate triethanolamine and ammonium lauryl sulfate are preferable.

The blending amount of the (a) sulfate ester type surfactant used in the present invention is 5.
It is preferably 0% by mass or more and less than 50% by mass. 5.0 mass%
If it is less than 50%, the foaming property is not sufficiently obtained, and if it is 50% or more, the effect of preventing discoloration and discoloration decreases.

The term "cleansing active ingredient" as used herein refers to an ingredient having a cleansing effect in a shampoo composition, and particularly an anionic surfactant, an amphoteric surfactant, a semipolar surfactant, or a nonionic surfactant. .

The (b) acylglutamic acid type surfactant used in the present invention includes N-coconut oil fatty acid acyl-
L-glutamate triethanolamine, N-lauroyl-L-glutamate triethanolamine, N-coconut oil fatty acid acyl-L-glutamate potassium, N-coconut oil fatty acid acyl-L-glutamate sodium, N-stearoyl-L-glutamate sodium salt , N-myristoyl-L-potassium glutamate and the like,
Among these, N-acyl-L-glutamic acid triethanolamine is preferable, and N-coconut oil fatty acid acyl-L
-Triethanolamine glutamate is more preferred.

The imidazoline-based amphoteric surfactant (c) used in the present invention is an amphoteric surfactant obtained by a method such as carboxymethylating hydroxyethylimidazoline having an n-alkyl group having 11 to 17 carbon atoms. Yes, US Pat. No. 2,528,378, US Pat. No. 2,773,068
And compounds obtained by the production method disclosed in JP-B-59-51532. Examples of commercially available products include NIKKOL AM-101 [manufactured by Nikko Chemicals], MIRANOL C2M-NP HV
[Made by Rhodia], MIRANOL Ultra
L-32. , Obazoline 662N-SF [manufactured by Toho Chemical Industry Co., Ltd.], Obazoline 552 [manufactured by Toho Chemical Industry Co., Ltd.], Anholex 50 [manufactured by Miyoshi Oil & Fats Co., Ltd.] and the like.

The pH of the hair-dyed shampoo composition of the present invention should be 5.0 to 6.0. pH
If it is less than 5.0, the discoloration-preventing effect cannot be obtained because the hair dyed with hair becomes red, and if it exceeds pH 6.0, the sufficient discoloration-preventing effect may not be obtained.

Furthermore, the hair-dyed shampoo composition of the present invention comprises (a) a sulfate ester-based surfactant,
By the synergistic effect of three kinds of (b) an acylglutamic acid type surfactant and (c) an imidazoline type amphoteric surfactant, p
Foaming is also good at H 5.0 to 6.0. In particular,
The mass ratio of (a) a sulfate ester-based surfactant, (b) an acylglutamic acid-based surfactant, and (c) an imidazoline-based amphoteric surfactant is (a) <{(b) + (c)}. And shows excellent foaming and a high effect of preventing discoloration and discoloration.

In the shampoo composition for hair which has been subjected to the hair dyeing treatment of the present invention, in addition to the above-mentioned components, the components usually used in the shampoo composition are appropriately selected depending on the purpose within the scope of the present invention. It can be blended. These components include oils such as higher alcohols, lanolin derivatives, higher fatty acids and protein derivatives, moisturizers such as propylene glycol, glycerin and polyethylene glycol, pearlescent agents such as fatty acid ethylene glycol, and water-soluble polymers. Sticking agent, preservative, sequestering agent, antioxidant, pH
Examples include regulators, ultraviolet absorbers, dyes, and fragrances.

[0019]

EXAMPLES The present invention will now be described in detail with reference to examples, but the present invention is not limited thereto. Prior to the examples, the test method and evaluation method adopted in each example will be described.

Hair wash fastness test method After treating yak hair dyed with an oxidative hair dye with a sample,
Allow to air dry. After repeating this operation 100 times, the change in color was visually evaluated.

The evaluation criteria were set as follows. ◎ ... no change in color ○: Almost no color change △: There is a change in color ×: Color changes drastically

Foaming Test Method An aqueous solution having an activator concentration of 2% (CaCO ₃ 50 ppm artificial hard water, 40 ° C.) was prepared and tested according to the Los Miles test method.

The criteria for judgment are as follows. ◎: Excellent foaming ... 250 mm or more in height ○: Good foaming ... 210 mm or more in height 250 mm
Less than △: Normal foaming ... Bubble height 170mm or more 210mm
Less than x: Poor foaming ... Bubble height less than 170 mm

Examples 1 to 12 and Comparative Examples 1 to 7 Shampoos having the composition shown in Table 1 were prepared by a conventional method. All units in the table are% by mass. The hair wash fastness and foaming property were examined, and the results are shown in Table 1.

[0025]

[Table 1]

As is clear from Table 1, Examples 1 to 12
All shampoos show excellent performance.

[0027] Example 13 Shampoo                                                           (mass%) ・ Ammonium lauryl sulfate 10.0 -N-coconut oil fatty acid acyl-L-glutamic acid 8.0     Triethanolamine * 2-alkyl-N-carboxymethyl-N-     Hydroxyethyl imidazolinium betaine 5.0 ・ Lauric acid isopropanolamide 2.0 ・ Ethylene glycol distearate 1.0 ・ Cationized cellulose derivative 0.1   (Product name: Kachinaru HC-200 [manufactured by Toho Chemical Industry Co., Ltd.]) High-molecular siloxane aqueous emulsion (trade name: BY22-029 1.0     [Toray Dow Corning Silicone] ・ Preservative 0.1 ・ Perfume proper amount ・ Amount of citric acid ・ Purified water balance                                                       pH 5.5

A shampoo having the above composition was prepared by a conventional method, and the hair wash fastness and foaming property were evaluated. As a result, all the properties were excellent and good results were obtained.

[0029]

EFFECTS OF THE INVENTION As described above, the effect of preventing discoloration and discoloration on hair dyed is pH 5.0 to 6.
A shampoo composition for hair which has been dyed and has good foaming even at 0.

Claims (4)

[Claims] 1. (a) a sulfate ester-based surfactant,
It contains (b) an acylglutamic acid type surfactant and (c) an imidazoline-based amphoteric surfactant and has a pH of 5.
A shampoo composition for hair that has been dyed, characterized in that it is 0 to 6.0. 2. The shampoo composition for hair subjected to hair dyeing according to claim 1, wherein (a) the sulfate ester surfactant is an alkyl sulfate salt. 3. The hair shampoo composition according to claim 1, wherein the amount of the (a) sulfate ester-based surfactant is 5.0% by mass or more and less than 50% by mass based on the total amount of the active ingredients for washing. 4. (a) a sulfate ester surfactant,
The mass ratio of (b) the acylglutamic acid type surfactant to (c) the imidazoline-based amphoteric surfactant is (a) <{(b).
+ (C)}, wherein the hair-dyed shampoo composition for hair according to claim 1.