JPH0920645A - Bubble bath composition - Google Patents

Abstract

(57) Abstract: A (A) C ₈ -C ₁₈ alkyl alkanolamide type surfactants or C ₈ -C ₁₈ alkyl dimethyl amino acetic acid betaine type surfactants 10-30 wt%,
(B) C ₈ -C ₁₈ alkyl (or polyether) sulfate ester anionic surfactants 5-20% by weight, and (C) Gramineae, extract 0.1 of Rutaceae, or Araceae plants Contains 10% by weight, and the compounding weight ratio (A /
B) is 1 or more, and the viscosity of the composition at 20 ° C. is 1
Bubble bath composition of 000 cp or less. [Effects] Excellent foaming and foam retention, good dispersibility in bath water, and excellent in suppressing itching of the skin after bathing. If this is used, itching does not occur on the skin after bathing, You can get the relaxing effect and the cleaning effect by rich foaming.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bubble bath composition, and more particularly, a bubble bath which has good foaming and foam lasting properties, good dispersibility in hot water, and suppresses itching on the skin after bathing. It relates to a composition.

[0002]

2. Description of the Related Art Conventionally, a bubble bath to which a body cleansing agent is applied is known as a bathing agent having foam. Anionic surfactants, nonionic surfactants, amphoteric surfactants, oils and fats, water-soluble humectants and the like are usually blended in this bubble bath as detergents.

[0003]

The bubble bath is expected to have a relaxing effect due to rich foaming and a cleaning effect due to foaming. However, when the water pressure of the tap water is weak, the initial foaming is small and even when the foaming occurs early. However, the usage rate is extremely low because the foam disappears while taking a bath. Furthermore, since the cleaning agent is the main component, natural moisturizing ingredients are eluted from the skin during bathing, and the barrier function of the skin is deteriorated, so that the skin after bathing is often irritated by the cleaning agent or the like.

In order to enhance the foaming, it is possible to increase the blending amount of the surfactant and the foam increasing agent. However, a large amount of the surfactant causes the skin to dry after bathing, and the bathing after bathing may be increased. Itching of the skin increases and it feels bad. Further, when a large amount of a surfactant is usually used (10 to 50 ml), the dispersibility in bath water is poor and it is difficult to use.

Therefore, an object of the present invention is to provide a bubble bath which has a good lathering property, a long-lasting foaming property, an excellent dispersibility in bath water, and which does not cause itching of the skin after bathing even when immersed in hot water up to the shoulder.

[0006]

Therefore, the present inventors have examined many factors such as the type and amount and ratio of surfactants, the type and amount of crude drug extract, and the viscosity of the composition. However, these factors are important for solving the above problems, and foaming occurs only when these factors are set to a specific type and range.
The inventors have found that all of the retention of foam, dispersibility in bath water, and suppression of itching of the skin after bathing can be satisfied, and the present invention has been completed.

That is, the present invention provides the following component (A):
(B) and (C) (A) Alkylalkanolamide type surfactant represented by the general formula (1) or betaine type surfactant represented by the general formula (2) 10 to 30% by weight,

[0008]

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(In the formula, R ¹ represents an alkyl group having 7 to 17 carbon atoms, R ² represents an alkyl group having 8 to 18 carbon atoms,
(X represents a hydrogen atom or a hydroxyethyl group) (B) Anionic surfactant represented by the general formula (3)
5-20% by weight,

[0010]

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(Wherein R ³ represents an alkyl group having 8 to 18 carbon atoms, M ¹ represents an anion residue, and n represents a number from 0 to 10) (C) Gramineae, Rutaceae or Araceae It contains 0.1 to 10% by weight of extracts of family plants, and the blending weight ratio of the component (A) and the component (B) (A /
B) is 1 or more, and the viscosity of the composition at 20 ° C. is 1
The bubble bath composition is characterized in that it is 000 cp or less.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION In the general formula (1) showing the alkylalkanolamide type surfactant of the component (A) used in the present invention, the alkyl group having 7 to 17 carbon atoms represented by R ¹ is directly Examples thereof include a chain alkyl group, a branched chain alkyl group, a cyclic alkyl group, and an alkyl group partially containing cyclic alkyl. Among them, the number of carbon atoms is 12 to 16
The straight chain or branched chain alkyl group of is preferable. Specific examples of the alkyl alkanolamide type surfactant (1) include coconut oil fatty acid diethanolamide, lauric acid diethanolamide, coconut oil fatty acid monoethanolamide,
Examples include myristic acid diethanolamide,
It is not limited to this.

In the general formula (2) showing the betaine type surfactant, the alkyl group having 8 to 18 carbon atoms represented by R ² is a straight chain alkyl group, a branched chain alkyl group, a cyclic alkyl group or a cyclic alkyl group. Any of alkyl groups partially containing alkyl can be mentioned, and among them, carbon number is 12 to 16
The straight chain or branched chain alkyl group of is preferable. Specific betaine-type surfactants include lauryldimethylaminoacetic acid betaine, stearyldimethylaminoacetic acid betaine,
An example is myristyldimethylaminoacetic acid betaine, but it is not limited thereto.

These alkylalkanolamide type surfactants (1) and betaine type surfactants (2) may be used alone or in combination of two or more kinds.

The amount of the component (A) compounded is 10 to 30% by weight, more preferably 15 to 25% by weight. If it is less than 10% by weight, the foam retention is not sufficient, and if it exceeds 30% by weight, the viscosity of the composition increases and the dispersibility in bath water decreases.

In the general formula (3) representing the anionic surfactant as the component (B), the alkyl group having 8 to 18 carbon atoms represented by R ³ is the same as the above R ² , a straight chain alkyl group and a branched chain. Examples thereof include an alkyl group, a cyclic alkyl group, and an alkyl group partially containing a cyclic alkyl, and among these, a linear or branched alkyl group having 12 to 16 carbon atoms is preferable. Examples of the anion residue represented by M ¹ include alkali metals such as sodium and potassium; mono-, di- or trialkanolamines such as ethanolamine, diethanolamine and triethanolamine; ammonium and the like. Further, n is 0 to 10, but 0 to 4 is more preferable. As a specific anionic surfactant,
Polyoxyethylene (2-4) sodium lauryl ether sulfate, polyoxyethylene (2-4) lauryl ether sulfate triethanolamine, polyoxyethylene (2-4) ammonium lauryl ether sulfate, lauryl sulfate triethanolamine, sodium lauryl sulfate, etc. However, the present invention is not limited to this. These anionic surfactants may be used alone or 2
You may use it in combination of 2 or more types.

The blending amount of the component (B) is 5 to 20% by weight, more preferably 7 to 15% by weight. If the amount is less than 5% by weight, foaming is not sufficient, and if the amount exceeds 20% by weight, it causes itchiness of the skin after bathing, resulting in poor skin feel.

Further, the blending weight ratio (A / B) of the component (A) and the component (B) must be 1 or more, and 1.5 to 3 is particularly preferable. When A / B is less than 1, the foam retention is particularly reduced and the effect of the present invention cannot be obtained.

The plants of the family Gramineae for obtaining the plant extract of the component (C) are oats, pigeons and the like, and the plants of the family Rutaceae are the plants of the family Araceae such as Unshu mandarin, red sea bream and yuzu. , Shobu, squid, and the like can be exemplified, but the invention is not limited thereto.
These extracts may be used alone or in combination of two or more. The extraction can be performed by a commonly used method, and examples thereof include hot water extraction, ethanol extraction, and 1,3-butylene glycol extraction, but are not limited thereto.

These extracts have an evaporation residue of 2 to 3
It is preferable to use 0 w / v%, and the compounding amount thereof is 0.1 to 10% by weight in the composition, particularly 0.2 to 5%.
% By weight is preferred. If it is less than 0.1% by weight, itching after bathing cannot be suppressed, and if it is blended in more than 10% by weight, foaming becomes worse.

The bubble bath composition of the present invention has a viscosity at 20 ° C. of 1,000 cp or less, more preferably 500 cp or less. When the viscosity exceeds 1000 cp, it is difficult to take out from the container or pillow, and the dispersibility in bath water is deteriorated.
The viscosity here is measured by a B-type viscometer.

The bubble bath composition of the present invention may contain a polyol for the purpose of giving a moist feeling to the skin after bathing. Examples of such a polyol include dihydric or trihydric alcohols, and specifically, glycerin, 1,
3-butylene glycol, propylene glycol, polyethylene glycol (especially molecular weight of 400 to 20,000)
However, the present invention is not limited to this.

The blending amount of the polyol prevents the dispersibility of the bubble bath composition in the bath water from decreasing, and the blending amounts of the component (A) and the component (B) decrease to cause insufficient foaming property. In order to prevent the
Especially, 22 to 40% by weight is preferable.

In the bubble bath composition of the present invention, in addition to the above components, preservatives, fragrances, pigments, water, vitamins, inorganic salts,
Amino acids and the like can be appropriately added.

The bubble bath composition of the present invention can be usually produced by mixing the above components, and the form thereof is usually liquid or emulsion.

The bubble bath composition of the present invention thus obtained is, for example, in an appropriate amount in bath water, for example 10 to 150 L.
After adding 30 ml, add tap water or hot water to the bath water and whisk,
Alternatively, after the addition, tap water or hot water may be applied to the surface of the bath with a shower to foam, or by stirring after the addition, it may be used by foaming.

[0027]

Next, the present invention will be described specifically with reference to examples, but the present invention is not limited to these examples.

Examples 1 to 6 and Comparative Examples 1 to 10 Liquid bubble bath compositions having the compositions shown in Tables 1 and 2 were prepared by a conventional method, and the foamability, foam retention and bath water properties were evaluated by the following test methods. The dispersibility and itching of the skin after bathing were evaluated.

(1) Foaming test method 10 ml of a sample adjusted to 0.02% with 4 ° DH hard water was placed in a 100 ml colorimetric tube (φ24 mm) at 40 ° C.
Keep it warm. When the sample reaches 40 ° C., shake vigorously up and down 15 times (times / second). The foaming height after 30 seconds is measured.

(2) Test method for foam retention and itching of skin after bathing 20 ml of a bubble bath composition is put in a bath, and hot water of 39 ° C. is poured and 150 L of hot water is added while foaming. A cup with a diameter of 3 cm is attached to each of two positions on both forearms of the panelist, and degreased with an acetone: ether (1: 1) solution for 5 minutes in advance. After that, the panelists bathed the whole body and evaluated according to the following evaluation criteria. The average of the evaluations by 10 panelists is shown.

(Bubbling) The state of bubbles after 20 minutes of bathing was evaluated according to the following criteria. 5: Bubbles do not decrease. 4: Almost no bubbles are reduced. 3: Some bubbles are reduced. 2: Bubbles are considerably reduced. 1: There are no bubbles.

(Itching after Bathing) The itching of the degreased forearm was evaluated according to the following criteria. 5: Itching that can't be helped (both arms). 4: Itching that can't be helped (one arm). 3: Itching (both arms). 2: Itchy (one arm). 1: Does not feel itching.

(3) Test method for dispersibility in bath water The following criteria are compared with the case where a bubble bath is put into hot water (40 ° C.) as compared with the case where color water (aqueous solution containing only dye) is put. Was evaluated. 5: Easy to disperse. 4: Slightly easy to disperse. 3: Same as colored water. 2: Slightly difficult to disperse. 1: Difficult to disperse.

As shown in Tables 1 and 2, the results show that foaming, foam retention, dispersibility in bath water, and bathing can be achieved only when the blending amount, blending ratio, etc. of each component are within the range of the present invention. All of the subsequent suppression of skin itching was good.

[0035]

[Table 1]

[0036]

[Table 2]

[0037]

EFFECTS OF THE INVENTION The bubble bath composition of the present invention is excellent in foaming and foam retention, has good dispersibility in bath water, and is excellent in suppressing itchiness of the skin after bathing. It is possible to obtain a relaxing effect and a cleaning effect due to rich lathering without causing itching on the subsequent skin.

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[Procedure amendment]

[Submission date] July 12, 1995

[Procedure amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0032

[Correction method] Change

[Correction contents]

(Itching after Bathing) The itching of the degreased forearm was evaluated according to the following criteria. 5: Itching that can't be helped (both arms). 4: Itching that can't be helped (one arm). 3: Itching (both arms). 2: Itchy (one arm). 1: Does not feel itching.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hidenori Wan 2606 Akabane, Kaigai-cho, Haga-gun, Tochigi Prefecture Kao Corporation Stock Research Institute

Claims (1)

[Claims] 1. The following components (A), (B) and (C) (A) An alkylalkanolamide type surfactant represented by the general formula (1) or a betaine type surfactant represented by the general formula (2). Agent 10 to 30% by weight, (In the formula, R ¹ represents an alkyl group having 7 to 17 carbon atoms, and R ^1
2 represents an alkyl group having 8 to 18 carbon atoms, and X represents a hydrogen atom or a hydroxyethyl group) (B) 5 to 20% by weight of an anionic surfactant represented by the general formula (3), (In the formula, R ³ represents an alkyl group having 8 to 18 carbon atoms, and M 3
¹ represents an anion residue, and n represents a number from 0 to 10) (C) Contains 0.1 to 10% by weight of an extract of a plant of the family Gramineae, Rutaceae or Araceae, and contains the component (A). A bubble bath composition, wherein the blending weight ratio (A / B) of the component (B) is 1 or more, and the viscosity of the composition at 20 ° C. is 1000 cp or less.