JPS63161098A - Liquid detergent composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a liquid detergent composition used for hair, body, face washing, hand washing, shaving, tableware, etc. that comes into direct contact with human skin. Regarding.

[Conventional technology]

Conventionally, base materials commonly used in this type of cleaning composition include alkyl sulfate salts, polyoxyethylene alkyl sulfate salts, alkylmethyl taurate salts, alkylyl sarcosine salts, and acyl glutamate salts. Also, surfactants such as alkylimidazolinium betaines and alkylamidobetaines are known as additives for these. These are neutral or weakly acidic and have a pH close to that of the skin, but they have low protein denaturation, low degreasing ability, good foaming, good rinsability, and no slimy feeling after rinsing and no stiffness after drying. It did not have all of the various properties that a hypoallergenic cleaning agent should have, such as no burr feeling, in a well-balanced manner.

On the other hand, in addition to the above-mentioned detergents, liquid detergents containing fatty acid soap as the main ingredient are also known, and this type of detergent has the advantage of forming high-quality foam, rinsing well, and not leaving a slimy feeling. However, due to its strong alkalinity, it has a strong ability to degrease sebum, leaving a feeling of tightness and dryness after drying.

[Problem that the invention seeks to solve]

As described above, conventionally known liquid detergent compositions are inferior in any of the above-mentioned various properties required for detergents that come into direct contact with the skin, and in particular, those with low degreasing power have poor foaming power. Many of them had problems with ease of rinsing, and conversely, those with excellent foaming and rinsing properties had problems such as too strong degreasing power.

Therefore, it is an object of the present invention to obtain a liquid detergent composition that has excellent foaming power, good rinsability, and low degreasing power, and does not leave a slimy feeling after rinsing or a sticky, dry, dry feeling after drying. It is an object.

[Means for solving problems]

As a result of extensive studies to achieve the above object, the present inventors have found that by using a specific sulfosuccinic acid monoalkyl ester salt and a specific fatty acid soap in combination in a specific ratio, foaming power, rinsability, and low The present invention was completed after learning that a cleaning agent capable of satisfying all degreasing properties could be obtained.

That is, the present invention provides: A) the following general formula; (wherein, R is a linear or branched alkyl group having 8 to 20 carbon atoms; M is Na;
, 1/2 Ca or 7) sulfosuccinic acid monoalkyl ester salt represented by Li-norlammonium, M is Na, NHa or alkanol ammonium, n is an integer from θ to 20), and B) number of carbon atoms. Contains a fatty acid soap consisting of an alkanolamine salt of 8 to 22 fatty acids, and the weight ratio of the above A component and B component is 70/
The present invention relates to a liquid cleaning composition characterized in that the cleaning composition is in the range of 30 to 30/70.

Component A consisting of the above-described specific sulfosuccinic acid monoalkyl ester salt used in the present invention is known as a very mild surfactant for the skin, but it has poor foaming power and thickening ability, so it is difficult to clean. There are few examples of it being used as a base material for agents, and it is common that it is used exclusively as an additive. Examples of combined use with alkylimidazolinium betaines, alkyl sarcosine salts, polyoxyethylene alkyl sulfate salts, fatty acid hydrolyzed collagen alkali salts, etc. are disclosed in Japanese Patent No. 4800 and the like.

The present inventors have focused on the hypoallergenicity of the above-mentioned component A, and in order to take advantage of this advantage, the present inventors have combined this component A with component B, which is made of the above-mentioned fatty acid soap, and applied them as a base material for a cleaning agent. As a result, it was found that a detergent composition with very good foaming power could be obtained. That is, FIG. 1 shows the cleaning composition of Comparative Example 2 described later (curve-a) consisting of component A alone, the cleaning composition of Comparative Example 4 described later consisting of component B alone (curve-b), and component A. B
This shows the foaming power test results for the cleaning composition (curve = ab) according to the present invention of Example 1 described later in which the components were used in combination at a weight ratio of 50150, and as is clear from these comparisons, It can be seen that the combined use of component A and component B provides a significantly superior foaming power that cannot be achieved by component A alone.

Moreover, the above-mentioned foaming power increasing effect can be achieved by changing the weight ratio of component A to component B from 70/30 to 30/30 as shown in FIG.
This becomes noticeable when the Be content is set within the range of 70, and within the above range, the foaming power increases more than when using Be alone.
The maximum foaming power is obtained when the weight ratio is 0. The above A component and B component are both anionic surfactants, and when two types of anionic surfactants are combined, the foaming power increases synergistically as described above. This was completely unknown in the past and was discovered by the present inventors for the first time.

In addition, in the combination system of the present invention, the curve -
As can be understood from the fact that the increase and decrease in foaming power due to the concentration difference in ab is very steep, the rinsability is also good and there is no problem of a slimy feeling remaining after rinsing. Moreover, since the above combination system can sufficiently maintain the hypoallergenic properties inherent to component A, that is, it can maintain low degreasing power, there is no problem of dryness or stiffness remaining after drying, but rather a moist feel. You can have it.

Thus, in the cleaning composition of the present invention, the above-mentioned A
By using Component B and Component B together in a specific ratio, it not only provides excellent foaming power, but also has good rinsability and low degreasing power, which is required as a cleansing agent that comes in direct contact with the skin. It is possible to satisfy all the basic characteristics.

[Structure and operation of the invention]

Component A used in the present invention is R in the general formula
is a straight or branched alkyl group having 8 to 20 carbon atoms, M
is Na, NHs, 1/2Mg.

1/2 Ca or alkanol ammonium, M
' is a specific sulfosuccinic acid monoalkyl ester salt consisting of Na + K + NH4 or alkanol ammonium, n is an integer of 0 to 20, R, M;

If M' and n are other than the above, sufficient foaming power may not be obtained even when used in combination with component B, or the degreasing power may tend to increase, so it is unsuitable.

Among such sulfosuccinic acid monoalkyl ester salts, in particular R is lauryl, myristyl or a mixture thereof, the number n of added moles of ethylene oxide is 0 to 5, M is Na, 1/2 M g or triethanolammonium, M It is most preferable that ' is Na.

Component B used in the present invention is a fatty acid soap consisting of an alkanolamine salt of a fatty acid having 8 to 22 carbon atoms, and other fatty acid soaps such as potassium salts and sodium salts have too strong degreasing power, so the present invention It is inappropriate for Further, even if the alkanolamine salt is used, if the number of carbon atoms in the fatty acid is outside the above range, the foaming power will decrease, so it is still inappropriate.

The fatty acids in the above B component include caprylic acid, caproic acid, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, and mixtures thereof such as coconut oil fatty acid, hydrogenated coconut oil fatty acid, and palm oil. There are oil fatty acids, hydrogenated palm oil fatty acids, beef tallow fatty acids, hydrogenated beef tallow fatty acids, etc., and from the viewpoint of increasing foaming power, it is desirable to use a large amount of lauric acid and myristic acid. Alkanolamines for neutralizing this fatty acid to form alkanolamine salts include monoethanolamine, jetanolamine, triethanolamine, and the like, with triethanolamine being particularly preferred.

In the present invention, the above A component and B component have a weight ratio of 70/30 to 30/70, particularly 60/40 to 40/
They are used in combination at a ratio of 60. The above ratio is 70/30~
If it is outside the range of 30/70, the foaming power will decrease, which is inappropriate.

In the present invention, the mixture of component A and component B in the above ratio has a pH of 7.0 to 8.5 in a 5% by weight aqueous solution.
is adjusted to be within the range of If the pH is lower than 7.0, the composition may become cloudy and separate, and if it exceeds 8.5, the degreasing power tends to be too strong.
Neither is preferable.

The above adjustment can be achieved by simply mixing the A and B components due to their properties, but even in that case, acids such as sulfuric acid, hydrochloric acid, phosphoric acid, The desired pH within the above range can be adjusted using a base such as sodium hydroxide, potassium hydroxide, or alkanolamine.

The liquid detergent composition of the present invention contains the above-mentioned A and B components as essential components, and also contains conventionally known detergent active ingredients, solubilizers, oily components, and antioxidants to the extent that they do not impede the effects of the present invention. , various additives such as metal sequestering agents can be blended.

The above-mentioned cleaning active ingredients include known alkyl sulfate salts, polyoxyethylene alkyl sulfate salts,
Acylated methyl taurine salt, acylated sarcosine salt, fatty acid ethanolamide ester salt, alkyl amino acid salt, acylated amino acid salt, fatty acid monoglyceride sulfate ester salt, polyoxyethylene alkyl ether, polyoxyethylene (polyoxypropylene) fatty acid ester, fatty acid Examples include alkanolamide, alkyldimethylamine oxide, alkyldihydroxydiethylamine oxide, alkyl or alkenylimidazolinium betaine, alkyl or alkenyl betaine, alkyl or alkenylamide betaine, polyoxyethylene sorbitan fatty acid ester, and the like.

The solubilizing agents mentioned above include ethanol, isopropanol, ethylene glycol, propylene glycol, glycerin, 1,3-butanediol, polyethylene glycol, ethylene glycol monoethyl ether, and the oily components include higher fatty acids, Higher alcohols, esters thereof, liquid paraffin, etc. are used as antioxidants, dibutylhydroxytoluene, butylhydroxyanisole, etc., and sequestering agents include ethylenediaminetetraacetic acid or its alkali metal salts, hydroxyethanediphosphonic acid or its Examples include alkali metal salts and the like.

The liquid detergent composition of the present invention comprising such components has A as an essential component before use.

Component B is generally treated as an aqueous solution containing 0.5 to 60% by weight, and when used, this is diluted with water to prepare the above A,
By using it for face washing as an aqueous solution in which the concentration of component B is 0.1 to 10%, the effects unique to the present invention described above can be exhibited.

〔Effect of the invention〕

As described above, the liquid detergent composition of the present invention has excellent foaming power and rinsability, and low degreasing power, so it can be used for hair, body, face washing, hand washing, shaving, tableware, etc. It is suitable as a cleaning agent for use in

〔Example〕

EXAMPLES Below, the present invention will be explained in more detail by describing examples. In the following, parts and % mean parts by weight and % by weight, respectively.

Example 1 As the sulfosuccinic acid monoalkyl ester salt of component A, R=nilauryl n=3, M=Na, M'= in the general formula
A salt consisting of Na (hereinafter referred to as A) was used, and triethanolamine salt of a mixed fatty acid of lauric acid and myristic acid in a weight ratio of 70/30 was used as the fatty acid soap of component B. Weight ratio of ingredients: 5015
The liquid detergent composition according to the present invention was prepared by mixing the two components at a temperature of 0.0 and dissolving them in water so that the concentration of both components was 30%.

Example 2 The weight ratio of component A (A + component) and component B was 7073
A liquid detergent composition was obtained in the same manner as in Example 1 except that the amount was set to 0.

Example 3 Component A (weight ratio of AI acid component and B component is 30/70)
A liquid detergent composition was obtained in the same manner as in Example 1, except that.

Example 4 Component A (in addition to the AI acid component and the B component, 5% imidazolinium betaine and 2% alkyl betaine were additionally blended, so the total concentration of the compounding ingredients was 37%) A liquid cleaning composition was obtained in the same manner as in Example 1.

Example 5 R=nilauryl n=3 in -S formula instead of A, component
A liquid detergent composition was obtained in the same manner as in Example 1, except that the same amount of sulfosuccinic acid monoalkyl ester salt (hereinafter referred to as A2) consisting of M=nitriethanolammonium M'=Na was used.

Example 6 Instead of A1 component, R=nilauryl n=3 in the -S formula
A liquid cleaning composition was obtained in the same manner as in Example 1, except that the same amount of sulfosuccinic acid monoalkyl ester salt (hereinafter referred to as A3) consisting of , M=1/2Mg, and M'=Na was used.

Comparative Example I The weight ratio of component A (A, component) and component B is 80/20.
A liquid detergent composition was obtained in the same manner as in Example 1, except that.

Comparative Example 2 Component B was not used, and the concentration of component A (A, component) alone was 3.
A liquid cleaning composition was obtained in the same manner as in Example 1 except that the concentration was 0%.

Comparative Example 3 Component A (comparative example except that in addition to the AI acid component, 5% imidazolinium betaine and 2% alkyl betaine were additionally blended, so that the total concentration of the compounding agent components was 37%) A liquid detergent composition was obtained in the same manner as in Example 2.

Comparative Example 4 Component A (A, component) was not used, and the concentration of component B alone was 3.
A liquid cleaning composition was obtained in the same manner as in Example 1 except that the concentration was 0%.

Comparative Example 5 Same as Comparative Example 4 except that in addition to component B, 5% imidazolinium betaine and 2% alkyl betaine were additionally blended, so that the total concentration of the blending ingredients was 37%. A liquid detergent composition was obtained.

Comparative Example 6 Instead of component B, potassium salt of mixed fatty acid of 70/30 weight ratio of lauric acid and myristic acid (hereinafter referred to as B) was used.
A liquid detergent composition was obtained in the same manner as in Example 1, except that the same amount of the components (hereinafter referred to as ``components'') was used.

Comparative Example 7 Same as Example 1 except that instead of component B, the same amount of sodium salt of a mixed fatty acid of lauric acid and myristic acid in a weight ratio of 70/30 (hereinafter referred to as component B'2) was used. A liquid detergent composition was obtained.

In order to examine the performance of each of the compositions of Examples 1 to 6 and Comparative Examples 1 to 7, the following tests were conducted.

The results were as shown in the table below.

(P of 5% aqueous solution) (> Take 10 g of each composition, dilute with distilled water so that the concentration of components A and B is 5%, and prepare a fine 1 tP by adding hydrochloric acid or sodium hydroxide as necessary) After that, the pH of the liquid was measured.

Foaming power〉 Each composition was diluted with water so that the concentration of components A and B was 1.0%, and this was diluted with water using the Ross-Miles method.
The foam height at 25°C was measured. If the foam height is 280 mm or more, it can be said that the foaming power is excellent.

<Rinseability, slimy feel, and degreasing ability> Ten panelists applied 5 ml of each composition on a bath sponge and washed their fingers and forearms three times with warm water at approximately 40°C. Evaluation was performed based on the criteria.

Rinseability was evaluated as good when the foam disappeared quickly when flushed with foaming water, and slimeability was evaluated as good when it was less slimy, and both were evaluated in a wet state. The degreasing properties were evaluated as good if the skin did not become dry or stiff immediately after drying and after 2 hours.

The evaluation criteria are as follows.

Rinseability: Good ◎, Slightly good ○, Slightly bad △, Bad × Sliminess: None 01 means Very little ○, Slightly △, Obviously × Degreasability: Good ◎, Slightly good ○, Slightly bad △, Bad × For each item, it was judged that it was practical if it was 0 or more.

Next, Example 1 (combined use of component A and component B), Comparative Example 2 (component A alone) and Comparative Example 4 (component B alone)
For each composition, the relationship between the concentration of components A and B in the aqueous solution and foaming power was investigated. The foaming power was measured in the same manner as above except that the concentrations of components A and B were changed. The results were as shown in FIG. 1 described above. In the figure,
Curve-a is Comparative Example 2, Curve-b is Comparative Example 4, Curve-ab
are the results of Example 1.

Furthermore, Examples 1 to 3 and Comparative Example 1 and Comparative Example 2
．． Including each composition of No. 4, component A (A.

The relationship between the weight ratio of component B) and component B and foaming power was investigated. The foaming power was measured in exactly the same manner as above (1.0% concentration, 25°C). The results were as shown in FIG. 2 mentioned above.

As is clear from the above test results, the composition using component A and component B together in a specific weight ratio according to the present invention has excellent foaming power and rinsability, and has low degreasing power. It can be seen that the product exhibits very good performance with no slimy feeling after rinsing and no stiff or dry feeling after drying.

[Brief explanation of the drawing]

Figure 1 is a characteristic diagram showing the relationship between the concentration of components A and B and foaming power in liquid detergent compositions of the present invention and comparative examples, and Figure 2 is the weight ratio of component A/component B in the above compositions. It is a characteristic diagram showing the relationship between and foaming power. Patent applicant Nippon Oil & Fats Co., Ltd. Figure 1 Tension of A and B nails (N amount o70) Figure 2 of A and B nails! quantity ratio

Claims (1)

[Claims] (1) A) The following general formula; ▲There are mathematical formulas, chemical formulas, tables, etc.▼ (In the formula, R is a straight or branched alkyl group having 8 to 20 carbon atoms, M is Na, K, NH_4, 1/2Mg, 1/2
Ca or alkanol ammonium, M' is Na, K
, NH_4 or alkanol ammonium, n is 0-
B) a fatty acid soap consisting of an alkanolamine salt of a fatty acid having 8 to 22 carbon atoms, and the weight ratio of the A component to the B component is 70/
A liquid detergent composition characterized in that the cleaning composition is in the range of 30 to 30/70.