JP2831812B2 - Detergent composition - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a cleaning agent, and particularly to a cleaning agent composition which is suitable for cleaning skin and hair, has low irritation, and has excellent foaming properties and foam feeling.

[Problems to be solved by conventional technology and invention]

Conventionally, phosphate ester surfactants, which are known as low-irritant surfactants, have points to be improved in foaming properties and feel when used, and various foaming aids and co-surfactants Concomitant use with agents has been considered.

For example, JP-A-58-101197 discloses a combination with a taurine-based surfactant, and JP-A-59-74196 discloses a combination with a sarcosine-based surfactant. These have good effects on foaming properties and detergency, respectively, but with the diversification and sophistication of detergents in recent years, higher foam quality and usability are required.

An object of the present invention is to obtain a detergent which has a property of low irritation and detergency, and which is further foamed, especially has a fast foaming property and a foaming property, and an unprecedented creamy foaming property.

[Means for solving the problem]

The present inventors have conducted intensive studies on a detergent composition using a phosphate ester-based surfactant in order to solve the above-mentioned problems, and as a result, unexpectedly, the same anionic surfactant, isethionic acid, was used. If a surfactant is used in combination, the lack of fast foaming which is a disadvantage of the detergent composition is improved,
The present inventors have found that the characteristics of creamy foam and low irritation to the skin remain unchanged, and completed the present invention.

That is, the present invention provides the following components (A) and (B), (A) the following general formula (I) or (II) (Wherein, R ₁ , R ₂ and R ₃ each represent a saturated or unsaturated hydrocarbon group having 12 to 14 carbon atoms, and X and Y each represent hydrogen, an alkali metal, ammonium or hydroxyalkyl having 2 or 3 carbon atoms) Represents an alkanolamine having a group, l, m,
(n represents a number from 0 to 10) respectively; (B) a phosphate ester-based surfactant represented by the following general formula (III): (Wherein R ₄ represents a saturated or unsaturated hydrocarbon group having 9 to 17 carbon atoms, and Z represents alkanolamine having hydrogen, an alkali metal, ammonium or a hydroxyalkyl group having 2 or 3 carbon atoms). It is intended to provide a detergent composition characterized by containing an isethionic acid-based surfactant.

The phosphate ester-based surfactant which is the component (A) of the present invention has an ethylene oxide addition mole number of 0 to 3;
Are preferred, and particularly those having no ethylene oxide added and having an alkyl group having 12 to 14 carbon atoms are preferred. Preferred specific examples of component (A) include sodium mono- or dilauryl phosphate, potassium mono- or dilauryl phosphate, diethanolamine mono- or dilauryl phosphate, triethanolamine mono- or dilauryl phosphate, sodium mono- or dimyristyl phosphate, mono- or dimyristyl phosphorus Examples thereof include potassium acid, diethanolamine mono- or dimyristyl phosphate, and tritanolamine mono- or dimyristyl phosphate. The component (A) is prepared by using the compound represented by the formula (I) and the compound represented by the formula (II) in a weight ratio of 10: 0 to 5:
It is preferable to mix at a ratio of 5, especially 10: 0 to 7: 3.

As the isethionate surfactant as the component (B) of the present invention, in the above formula (III), the carbon number of R ₄ is from 11 to 1
3 are preferable, and specific examples thereof include sodium lauroyl isethionate, sodium myristoyl isethionate, potassium lauroyl isethionate, potassium myristoyl isethionate, triethanolamine lauroyl isethionate, sodium cocoyl isethionate, And potassium cocoyl isethionate.

The isethionic acid-based surfactant, which is the component (B), has low solubility in water and is not suitable for use as a liquid detergent main base. However, depending on the combination with the component (A), it can be used in various dosage forms. It has become possible to use it suitably.

The cleaning composition of the present invention is not particularly limited with respect to its dosage form, and may be a conventionally known dosage form, for example, a solid detergent, a powder / granule detergent, a paste detergent, a liquid detergent, or the like. it can. The detergent composition of the present invention is prepared by blending the components (A) and (B), and further blending and adding various optional components as necessary, according to a known method according to the dosage form. The cleansing composition of the present invention can be suitably used especially as a skin cleansing agent because it has good foaming properties and foaming properties and a creamy foam.

When the cleaning composition of the present invention is a liquid cleaning agent,
The amount of the component (A) is preferably 5 to 50% by weight (hereinafter simply referred to as "%"), particularly preferably 10 to 40%. -In the case of a powder cleaning agent, the content is preferably 60 to 95%, particularly preferably 70 to 90%. The weight ratio of the component (A) to the component (B) is as follows:
(B) = 100: 1 to 1: 100, but any value, especially 10: 1 to
5: 5 is preferred.

Optional components that can be added to the detergent composition of the present invention include water and co-surfactants such as higher fatty acid salts, alkylamine oxides, fatty acid alkanolamides, imidazoline amphoteric surfactants, and the like; silicone derivatives, squalene , Lanolin and the like; inorganic and organic salts, diluents, fragrances, pigments, bactericides, anti-inflammatory agents, viscosity modifiers, solubilizers, preservatives, water-soluble polymer compounds and the like.

〔Example〕

Next, the present invention will be described in more detail with reference to Examples.
The present invention is not limited to these examples.

 The percentages in the examples are% by weight unless otherwise specified.

Example 1 (Liquid detergent) A liquid detergent having the following composition was prepared, and the mixing ratio of the phosphate ester-based surfactant and the isethionic acid-based surfactant was changed as shown in Table 1 to foam. Force and foam quality were evaluated by the following methods.

 The results are shown in Table 1.

<Composition> <Evaluation method> Foaming and foam quality were evaluated by hand washing and washing according to the following criteria.

Foaming property: ○ Good foaming △ Normal foaming × Poor foaming Foam quality: ○ Fine texture △ Normal texture × coarse texture As is clear from Table 1, a combination of a phosphate ester-based surfactant and an isethionic acid-based surfactant can provide an excellent foaming and foaming detergent.

Example 2 The foaming properties, foam quality, and skin irritation of the various cleaning compositions shown in Table 2 were evaluated by the following methods. The balance is water.

 The results are shown in Table 2.

<Evaluation method> Foaming property and foam quality are evaluated by hand washing and washing according to the following criteria, and irritation to the skin is performed by a closed patch test using a 1% activator solution and visually observed 24 hours later. The judgment was made.

Foaming property: ○ Good foaming △ Normal foaming × Poor foaming Foam quality: ○ Fine texture △ Normal texture × Coarse Skin irritation:-Negative skin irritation + Positive skin irritation As is evident from Table 2, the product of the present invention was found to be excellent in foaming properties and foam quality and less irritating to the skin.

Example 3 (liquid detergent) Triethanolamine monolauryl phosphate 25% Sodium cocoyl isethionate 4% Lauryl dimethylamine oxide 3% Propylene glycol 5% Ethanol 5% Water balance Perfume 0.3% Thus, a liquid detergent which was mild and had excellent foaming power, foaming power and foam quality was obtained.

Example 4 (pasty detergent) Triethanolamine monolauryl phosphate 40% Sodium lauroylisethionate 5% Laurylhydroxysulfobetaine 3% Propylene glycol 5% Ethanol 5% Fragrance 0.3% Water balance The above composition was used. Thus, a paste-like detergent having extremely fast foaming power, excellent foam quality and gentle on the skin was obtained.

Example 5 (Cream detergent) Triethanolamine monolauryl phosphate 30% Sodium cocoyl citrate 15% Propylene glycol 5% Polyethylene glycol (molecular weight 600) 5% Sodium benzoate 0.3% Fragrance 0.3% Water Remainder A creamy detergent excellent in quick foaming power and foam quality and gentle on the skin was obtained by the blended composition.

Example 6 (Solid detergent) Sodium monolauryl phosphate 30% Sodium dilauryl phosphate 5% Sodium monomyristyl phosphate 30% Sodium dimyristyl phosphate 5% Sodium cocoyl isethionate 20% Fragrance 0.3% Water Remainder Depending on the composition, a solid detergent excellent in quick foaming power and foam quality and gentle on the skin was obtained.

────────────────────────────────────────────────── ─── Continued on the front page (58) Fields surveyed (Int. Cl. ⁶ , DB name) C11D 1/28 C11D 1/34 C11D 1/37 A61K 7/075 WPI / L (QUESTEL) EPAT (QUESTEL)

Claims (2)

(57) [Claims] (1) The following components (A) and (B): (A) the following general formula (I) or (II) (Wherein, R ₁ , R ₂ and R ₃ each represent a saturated or unsaturated hydrocarbon group having 12 to 14 carbon atoms, and X and Y each represent hydrogen, an alkali metal, ammonium or hydroxyalkyl having 2 or 3 carbon atoms) Represents an alkanolamine having a group, l, m,
(n represents a number from 0 to 10) respectively; (B) a phosphate ester-based surfactant represented by the following general formula (III): (Wherein R ₄ represents a saturated or unsaturated hydrocarbon group having 9 to 17 carbon atoms, and Z represents alkanolamine having hydrogen, an alkali metal, ammonium or a hydroxyalkyl group having 2 or 3 carbon atoms). A cleaning composition comprising an isethionic acid-based surfactant. 2. The content of the component (A) is 5 to 95% by weight, and the compounding weight ratio of the component (A) to the component (B) is (A):
The cleaning composition according to claim 1, wherein (B) = 100: 1 to 1: 100.