JPH0762389A - Detergent composition - Google Patents

Abstract

PURPOSE:To obtain a detergent compsn. which is excellent in detergency and foaming properties, gives a plain feeling after the use, and hardly irritates the skin or ophthalmic mucous membrane. CONSTITUTION:A detergent compsn. comprises at least one polyoxyethylene- hardened castor oil (I), an anionic surfactant (II) comprising at least one N- acylamino acid salt (A) and at least one acyl-N-methyltaurine salt (B), and at least one amphoteric surfactant (III) in wt. ratios of A/B and I/(II+III) of 0.1-0.9 and 0.1-10.0, respectively.

Description

Detailed Description of the Invention

[0001]

The present invention is excellent in detergency and foaming,
There is a fresh feeling after use, and relates to a detergent composition having extremely little skin irritation and eye mucous membrane irritation,
In particular, it relates to a skin cleansing composition and a hair cleansing composition.

[0002]

2. Description of the Related Art Conventionally used cleaning surfactants include anionic surfactants, nonionic surfactants and amphoteric surfactants. Typical examples of anionic surfactants are alkyl sulphates and alkyl ether sulphates, which have been used in many detergents such as face wash and shampoo because they have excellent detergency. However, since it has strong skin irritation, it is liable to cause skin disorders such as rough hands, and since it is easily adsorbed to hair and the like and has strong cleaning properties, it has drawbacks such as smoothness of hair and deterioration of combing. Was there.

As a surfactant having less skin irritation,
There are nonionic surfactants, and examples thereof include glycerin higher fatty acid ester, sucrose higher fatty acid ester, and sorbitan higher fatty acid ester. Although these nonionic surfactants are less irritating than anionic surfactants, they do not lend themselves well to the requirements of facial cleansers, shampoos, body cleaners and kitchen detergents due to poor foaming. There wasn't. Amides, which are condensates of fatty acids and amines, are often used, but they are often used in combination with anionic surfactants, and at the present time, they are strengthening rather than improving skin irritation. is there.

Examples of the amphoteric surfactant include imidazoline type betaine, which has a relatively low irritation, dimethyl betaine and amine oxide, which have the same strong stimulating properties as anionic surfactants. These amphoteric surfactants have insufficient effects in terms of foam quality, detergency, feeling of use, etc., and therefore are rarely used alone and are often used in combination with anionic surfactants. Further, although the characteristic that the irritation is improved depending on the blending with a specific anionic surfactant in a specific ratio, the degree of irritation reduction is not sufficient, and a significant improvement is desired. .

[0005] With such background and sophistication of living standard, development of a hypoallergenic surfactant having safe properties for the body and development of a hypoallergenic detergent composition with good usability have been developed. It was strongly desired. As a hypoallergenic detergent composition, there is a technique disclosed in JP-A-4-122798. This is extremely low in irritation as compared with conventional cleaning agents and is sufficiently satisfactory, but there is some dissatisfaction in terms of usability in terms of foaming, detergency and sliminess during rinsing.

[0006]

Means for Solving the Problems As a result of intensive studies in view of the above circumstances, the present inventors have found that when a specific surfactant is blended in a specific ratio, it is excellent in foaming and detergency, and has a refreshing usability after use. It was found that a detergent composition which can be further improved and has low skin and eye irritation is obtained, and the present invention has been completed.

That is, the present invention relates to polyoxyethylene hydrogenated castor oil (I), anionic surfactant (II) of N-acyl amino acid salt (A) and acyl N-methyl taurine salt (B), and amphoteric surfactant. Contains four types of agents (III) as active ingredients, and the content ratio (A) / (B) = 0.1
1.0, (I) / [(II) + (III)] = 0.1
This is a detergent composition containing 10.0.

The structure of the present invention will be described in detail below. Polyoxyethyne hydrogenated castor oil (I) used in the present invention
Is

[Chemical 1] (Wherein a, b, and c represent the number of moles of the polyoxyethylene group added, and a + b + c = 20 to 300), and is characterized by having a long-chain ethylene oxide group. The total number of ethylene addition moles is suitably from 20 to 300, preferably from 30 to 200. When the number of moles of ethylene oxide added is less than 20, it is difficult to form a uniform mixed system, and when it exceeds 300, the viscosity is excessively increased, which is not preferable.

The N-acyl amino acid salt (A) used in the present invention includes (i) N-acyl sarcosine salt

[Chemical 2] (In the formula, R ₁ represents an alkyl group or an alkenyl group having 7 to 21 carbon atoms, M ₁ represents hydrogen, an alkali metal, or an alkanolamine.) (Ii) N-acyl-N-methyl-β-alanine salt

[Chemical 3] (In the formula, R ₂ represents an alkyl group or an alkenyl group having 7 to 21 carbon atoms, and M ₂ represents hydrogen, an alkali metal, or an alkanolamine.) (Iii) N-acylglutamate

[Chemical 4] (In the formula, R ₃ represents an alkyl group or an alkenyl group having 7 to 21 carbon atoms, M ₃ and M ₄ represent hydrogen, an alkali metal, and an alkanolamine.) Of these, the most preferable one is N. -Acyl glutamate.

The amphoteric surfactant used in the present invention (II
As I), N, N-dimethyl-N-lauryl-N-
Carboxybetaine such as carboxymethylammonium betaine, N, N-dimethyl-N-oleyl-N-carboxymethylammonium betaine, sulfobetaine,
Betaine types such as amidobetaine and amidosulfobetaine, 2-lauryl-N-carboxyethyl-N-hydroxyethylimidazolinium betaine, 2-lauryl-
Imidazoline derivative types such as N-carboxymethyl-N-hydroxyethyl imidazolinium betaine, N-cocoalkyl-β-aminopropionic acid sodium salt, N-cocoalkyl-β-iminodipropionic acid disodium salt, and other aminocarboxylic acids Can be mentioned. The most preferred of these is the imidazoline derivative type.

In the detergent composition of the present invention, N-acyl amino acid salt (A) and acyl N-methyl taurine (B)
The content ratio of (A) / (B) in the cleaning composition is
= 0.1 to 1.0, particularly preferably 0.2 to 1.
It is 0. If the content ratio (A) / (B) is less than 0.1 or exceeds 1.0, the effect of the present invention may not be achieved.

In the detergent composition of the present invention, the content ratio of polyoxyethylene hydrogenated castor oil (I), anionic surfactant (II) and amphoteric surfactant (III) is such that (I) / [(II) + (II
I)] = 0.1-10.0, particularly preferably 0.
It is 1 to 2.0. Content ratio (I) / [(II) + (II
When I)] is less than 0.1 or exceeds 10.0, the effects of the present invention may not be achieved.

The detergent composition of the present invention is a transparent or opaque homogeneous system, and a composition obtained by adding water to this composition is also useful in a transparent or opaque homogeneous system.

The detergent composition of the present invention may further contain oil components such as higher alcohols, silicone oils, liquid paraffin and ester oils, humectant components such as propylene glycol, glycerin, polyglycerin and polyethylene glycol, and methyl cellulose, if necessary. , Water-soluble polymers such as hydroxyethyl cellulose, natural extracts of animals and plants and their derivatives, organic acids such as citric acid and lactic acid, inorganic salts such as sodium chloride and potassium chloride, coloring agents such as fragrances and dyes, preservatives, chelating agents , Components such as UV absorbers that are generally added to detergent compositions can be added. In addition,
These must be used under qualitative and quantitative conditions that do not impair the object of the present invention.

The detergent composition of the present invention comprises a shampoo for hair, a detergent for body, a facial cleanser, a detergent for removing makeup, a shampoo for infants, a detergent for body of infants,
It can be used for kitchen liquid detergents, medical detergents, and various other purposes.

[0016]

EXAMPLES Next, the present invention will be specifically described with reference to Examples and Comparative Examples, but the present invention is not limited thereto. The blending amount is% by weight.

Prior to the examples, the evaluation methods are shown below. (1) Foaming test 400 ml of a 1% sample concentration solution was prepared with artificial hard water of 70 ppm CaCO ₃ , and the foaming amount was measured at 40 ° C. using a cylinder equipped with a stirrer. ◎ ・ ・ ・ Very good (foam amount 2200ml or more) ○ ・ ・ ・ ・ ・ Good (foam amount 1800ml or more but less than 2200ml) △ ・ ・ ・ ・ ・ Normal (foam amount 1400ml or more but less than 1800ml) × ・ ・ ・ ・・ Poor (foam volume less than 1400 ml)

(2) Detergency test CaO / MgO = 3/1, 5 ° DH artificial hard water, sample concentration 1%
A solution was prepared and the artificial sebum-contaminated cloth using wool surge was washed. Turgotometer (JI
S K-3371) was used for cleaning, and the cleaning effect was determined from the reflectance before and after cleaning. Ro: reflectance of original cloth (wool surge) Rs: reflectance of contaminated cloth Rw: reflectance of contaminated cloth after washing The evaluation criteria are as follows. ○ ・ ・ ・ Good (cleaning efficiency 80% or more) △ ・ ・ ・ ・ ・ Normal (cleaning efficiency 60% or more but less than 80) × ・ ・ ・ ・ ・ Poor (cleaning efficiency less than 60%)

(3) Usability test For each sample, a panel of 5 men and 5 men, a total of 10 people, was used to sensory evaluate the usability (freshness). The evaluation criteria were as follows. ◎ ・ ・ ・ ・ ・ Very good (8-10 people answered that 10 people were good) ○ ・ ・ ・ ・ ・ Good (6-7 people answered that 10 people were good) △ ・ ・ ・ ・ ・Ordinary (4 to 5 out of 10 answered good) × ・ ・ ・ ・ ・ Poor (0 to 3 out of 10 answered good)

(4) Irritation test A sample was added to a pH 7 buffer solution of ovalbumin at a sample concentration of 1%, and an absorption peak at 220 nm was measured by an aqueous high performance liquid chromatographic method. The denaturation rate of was calculated. Denaturation rate (%) = 100 × (Ho-Hs) / Ho Ho: Height of absorption peak of ovalbumin buffer solution Hs: Height of absorption peak when sample is added to ovalbumin buffer solution I followed the following: ◎ ... Almost no irritation. (Modification rate is less than 20%) O ..... Slight irritancy. (Modification rate 20% or more 40
% Less) △ ・ ・ ・ ・ ・ Medium irritation. (Modification rate 40% or more 60
%) X: Strong irritation. (Modification rate 60% or more)

Examples 1 to 13 and Comparative Examples 1 to 9 The detergent compositions shown in Tables 1 to 5 below were prepared, evaluated, and the results are shown.

[0022]

[Table 1]

[0023]

[Table 2]

[0024]

[Table 3]

[0025]

[Table 4]

[0026]

[Table 5]

Example 14 Body Shampoo Polyoxyethylene (60) hydrogenated castor oil 6.0 Sodium N-stearoyl-L-glutamate 2.0 Sodium lauroyl-N-methyltaurine 4.0 2-lauryl-N-carboxyethyl- N-Hydroxyethyl imidazolinium betaine 10.0 Fragrance Suitable amount Dye Suitable amount Preservative Suitable amount Buffering agent Suitable amount Purified water Residue The above body shampoo has excellent detergency and lathering, excellent refreshing feeling after use, and low irritation Met.

Example 15 Body Shampoo Polyoxyethylene (90) hydrogenated castor oil 5.0 N-lauroyl-N-methyl-β-alanine sodium 3.0 Palm oil fatty acid-N-methyltaurine sodium 5.0 N, N -Dimethyl-N-lauroyl-N-carboxymethylammonium betaine 3.0 Fragrance Suitable amount Dye Suitable amount Preservative Suitable amount Buffering agent Suitable amount Purified water Residue The above body shampoo has excellent detergency and lathering, and has a refreshing feeling after use, and It was a low irritant.

Example 16 Shampoo Polyoxyethylene (40) hydrogenated castor oil 4.0 N-lauroyl sarcosine sodium 3.0 Lauryl-N-methyltaurine sodium 6.0 N, N-dimethyl-N-lauryl-N-carboxy Methylammonium betaine 4.0 Ethylene glycol distearate 2.0 Protein derivative 0.5 Fragrance Suitable amount Preservative Suitable amount Buffering agent Suitable amount Water Residue The above shampoo is excellent in detergency and foaming, and has an excellent refreshing feeling after use and is irritating. It was a poor one.

Example 17 Body Shampoo Polyoxyethylene (60) hydrogenated castor oil 3.0 polyoxyethylene (40) hydrogenated castor oil 3.0 sodium N-lauroyl-L-glutamate 2.0 lauryl-N-methyltaurine sodium 4.0 2-lauryl-N-carboxyethyl-N-hydroxyethylimidazolinium betaine 10.0 Glycerin 15.0 Perfume proper amount dye proper amount preservative proper amount buffer proper amount Purified water Residue The above body shampoo is excellent in detergency and foaming. It had a refreshing feeling after use and had low irritation.

Example 18 Shampoo Polyoxyethylene (60) hydrogenated castor oil 2.0 N-lauroyl sarcosine sodium 1.8 Lauryl-N-methyltaurine sodium 2.0 N, N-dimethyl-N-lauryl-N-carboxy Methylammonium betaine 10.0 Glycerin 15.0 Protein derivative 0.5 Fragrance Suitable amount Preservative Suitable amount Buffering agent Suitable amount Water Residue The above shampoo has excellent detergency and lathering, and also has a refreshing feeling after use and low irritation. Met.

Example 19 Shampoo Polyoxyethylene (50) hydrogenated castor oil 1.5 N-lauroyl-N-methyl-β-alanine sodium 2.1 Lauryl-N-methyltaurine sodium 3.0 N, N-dimethyl- N-lauryl-N-carboxymethylammonium betaine 7.4 Diglycerin 18.0 Fragrance Suitable amount Preservative Suitable amount Buffering agent Suitable amount Water Residue The above shampoo is excellent in detergency and foaming, excellent in refreshing feeling after use, and irritating Was low.

[0033]

EFFECT OF THE INVENTION The present invention is excellent in detergency and foaming by blending polyoxyethylene hydrogenated castor oil, a specific anionic surfactant and an amphoteric surfactant in a specific ratio, and is refreshed after use. It is intended to provide a detergent composition having excellent feeling and low irritation.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Reference number within the agency FI technical display location C11D 1:18 1:90 1:92) (72) Inventor Kei Sasaki Shinba, Kohoku-ku, Yokohama-shi, Kanagawa 1050-cho, Shiseido Daiichi Research Center, a stock company

Claims (3)

[Claims] 1. Polyoxyethylene hydrogenated castor oil (I)
An anionic surfactant (II) containing one or more kinds of N-acyl amino acid salt (A) and one or more kinds of N-acyl amino acid salt (A) and one or more kinds of acyl N-methyl taurine salt (B), and amphoteric One or more surfactants (III) are contained, and the content ratio (A) / (B) is 0.
1 to 1.0, content ratio (I) / [(II) + (III)]
Is 0.1 to 10.0 in weight ratio. 2. The N-acyl amino acid salt (A) is one or more selected from N-acyl sarcosine salt, N-acyl-N-methyl-β-alanine salt and N-acyl glutamate. The cleaning composition according to claim 1, which is characterized in that. 3. The detergent composition according to claim 1 or 2, wherein the amphoteric surfactant (III) is an imidazoline derivative.