JP2001064690A - Washing agent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a washing agent composition which can realize excellent foamed states and can give excellent fresh touches after used for washing, by including a specific amount of sodium sulfate in a washing agent composition containing a specified higher fatty acid salt. SOLUTION: This washing agent composition contains an 8 to 22C higher fatty acid salt (preferably a 10 to 20C higher fatty acid salt, further preferably a 12 to 18C higher fatty acid salt). The characteristic of the washing agent composition comprises further including sodium sulfate in an amount of 0.01 to 3 wt.%, preferably 0.05 to 3 production, more preferably 0.1 to 3 wt.% based on the composition, in the composition. The higher fatty acid in the higher fatty acid salt includes fatty acid mixtures obtained by the conventional high pressure hydrolysis method of animal oils or fats such as tallow or mutton tallow, vegetable oils or fats such as coconut oil, palm oil, soybean oil, olive oil or cotton seed oil, or the like, and lauric acid, myristic acid and palmitic acid obtained by separating and purifying the fatty acid mixture. The preferable amount of the higher fatty acid salt is 25 to 95 wt.% based on the composition in the case of a solid washing agent composition, and 5 to 40 wt.% in the case of a liquid washing agent composition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detergent composition having a use for a body, a face wash, a hand wash and the like.

[0002]

2. Description of the Related Art In general, good foaming is an important factor as a basic performance in a facial and body cleansing composition. As a method for improving foaming, several kinds of surfactants are used in combination with higher fatty acid soap, or a water-soluble polymer is added. However, in the method as described above, a slimy feeling with low palatability is generated at the same time as the improvement of foaming, and the original refreshing feeling of higher fatty acid soap is often greatly reduced, and improvement is desired. Was.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a detergent composition which can provide excellent lathering after washing while achieving excellent lathering.

[0004]

The present invention includes the following inventions. (1) A detergent composition containing a higher fatty acid salt having 8 to 22 carbon atoms, comprising sodium sulfate in an amount of 0.01% by weight or more and less than 3% by weight based on the composition. object.

(2) The detergent composition according to the above (1), wherein the higher fatty acid salt having 8 to 22 carbon atoms is mixed in a proportion of 25 to 95% by weight based on the composition and is solid. (3) The detergent composition according to the above (1), wherein the higher fatty acid salt having 8 to 22 carbon atoms is mixed in an amount of 5 to 40% by weight with respect to the composition and is liquid.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The cleaning composition of the present invention may be solid or liquid. The higher fatty acid salt used in the present invention has 8 to 22 carbon atoms, and preferably has 10 to 20 carbon atoms, and more preferably 12 to 18 carbon atoms, in view of foamability and solubility.

The higher fatty acids in such higher fatty acid salts include, for example, animal fats such as beef tallow, sheep oil and the like, vegetable oils such as coconut oil, palm kernel oil, soybean oil, olive oil, cottonseed oil and the like in a conventional manner. And lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, isomyristic acid, isopalmitic acid, isostearic acid, etc., obtained by separating and purifying them. These may be used alone or in combination of two or more.

The counter ion for forming a salt by ionic bonding with a higher fatty acid as described above has an alkali metal ion such as a sodium ion and a potassium ion, an ammonium ion, and a hydroxyalkyl group having 2 to 3 carbon atoms. Alkanol ammonium ions and the like.

In the case of a solid detergent composition, the proportion of the higher fatty acid salt is usually 25 to 95% by weight, preferably 30 to 95% by weight, based on the composition. If the mixing ratio in the solid detergent composition is less than 25% by weight, the detergency and freshness of the higher fatty acid salt will be insufficient, and if it exceeds 95% by weight, it will be difficult to mold (brittle).
Or its solubility in water decreases during use. In the case of a liquid detergent composition, the proportion of the higher fatty acid salt is usually 5 to 40% by weight, preferably 10 to 40% by weight, based on the composition. If the mixing ratio in the liquid detergent composition is less than 5% by weight, the detergency and freshness of the higher fatty acid salt will be insufficient, and if it exceeds 40% by weight, the viscosity will increase and the low-temperature stability will deteriorate significantly.

The detergent composition of the present invention contains sodium sulfate in an amount of 0.01% by weight or more and less than 3% by weight in either solid or liquid form. If the blending ratio of sodium sulfate is less than 0.01% by weight based on the composition, foaming cannot be sufficiently improved, and if the blending ratio is 3% by weight or more, the moldability of a solid preparation is poor. It becomes worse and the stability at low temperature is reduced in the liquid preparation. The mixing ratio of sodium sulfate is preferably from 0.05% by weight to less than 3% by weight, more preferably from 0.1% by weight to less than 3% by weight, based on the composition.

The water content of the detergent composition of the present invention is generally 35% by weight or less, preferably 3% by weight, for a solid preparation.
0% by weight or less, and usually 35 to 80% by weight, preferably 40 to 75% by weight in a liquid preparation. In a solid preparation, if the water content is too large, the moldability of the soap deteriorates and the preparation stability such as collapse is caused. In liquid preparations, if the water content is too high, the detergency at the time of use will be insufficient or palatability will be poor (foaming and moderate viscosity will not be obtained), and if too low, the viscosity will increase. It causes deterioration of low-temperature stability and usability (failure or clogging when discharging from a pump or a bottle). In the detergent composition of the present invention, an inorganic acid salt other than sodium sulfate; an organic acid; a salt of an organic acid other than a higher fatty acid; a surfactant other than the higher fatty acid salt; a water-soluble polymer may be used. .

Here, examples of the inorganic acid salt include alkali metal salts and alkaline earth metal salts of inorganic acids such as sodium chloride, potassium chloride, sodium carbonate, sodium hydrogen carbonate, magnesium sulfate and sodium pyrophosphate; Examples of the organic acid include higher fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, isomyristic acid, isopalmitic acid, isostearic acid, and hydroxyethanediphosphonic acid. Examples thereof include alkali metal salts and alkaline earth metal salts of hydroxy acids such as sodium citrate and sodium gluconate, tetrasodium edetate, and hydrates thereof. The surfactant may be any surfactant generally used in cosmetics, and examples thereof include anionic surfactants other than the higher fatty acid salts, nonionic surfactants, cationic surfactants, amphoteric surfactants, and the like. No.

The anionic surfactants preferably used in the present invention include, for example, alkyl benzene sulfate, alkyl sulfonate, α-olefin sulfonate, dialkyl sulfosuccinate, α-sulfonated fatty acid salt, acylmethyl taurine Salt, N-methyl-N-alkyl taurine salt, polyoxyethylene alkyl ether sulfate, polyoxyethylene alkyl phenyl ether sulfate, alkyl phosphate, polyoxyethylene alkyl ether phosphate, polyoxyethylene alkyl phenyl ether phosphate, N-acyl amino acid salt, N-acyl-
N-alkyl amino acid salts, alkyl sulfosuccinates, and the like can be mentioned.

Examples of the nonionic surfactant include glycerin fatty acid ester and its alkylene glycol adduct, polyglycerin fatty acid ester and its alkylene glycol adduct, propylene glycol fatty acid ester and its alkylene glycol adduct.
Sorbitan fatty acid ester and its alkylene glycol adduct, sorbitol fatty acid ester and its alkylene glycol adduct, polyalkylene glycol fatty acid ester, sucrose fatty acid ester, polyoxyalkylene alkyl ether, glycerin alkyl ether,
Polyoxyethylene alkylphenyl ether, polyoxyethylene hydrogenated castor oil, alkylene glycol adduct of lanolin, polyoxyalkylene-modified silicone,
Examples include polyether-modified silicone, fatty acid diethanolamide, ethylene glycol distearate, and the like.

Examples of the cationic surfactant include alkyltrimethylammonium chloride and dialkyldimethylammonium chloride. As the amphoteric surfactant, amino acid type or betaine type carboxylic acid type,
There are sulfate ester type, sulfonic acid type and phosphate ester type, and those safe for human body can be used. Examples of the water-soluble polymer include cellulosic polymers such as methylcellulose and hydroxypropylcellulose; polysaccharides such as xanthan gum and guar gum; and acrylic acid-based synthetic water-soluble polymers.

In the cleaning composition of the present invention, in addition to the above-mentioned components, if necessary, the components contained in ordinary skin cleaning agents such as polyethylene glycol, propylene glycol, glycerin, sorbitol, sucrose, etc. Humectants, higher alcohols, esters, silicones and other oils, fragrances,
Dyes, ultraviolet absorbers, bactericides, preservatives, stabilizers and the like can be added.

Among the detergent compositions of the present invention, solid preparations can be produced by general methods such as mechanical kneading, frame kneading, neutralization and saponification. In addition, in the production of a liquid preparation, the order of introduction may be changed, and heating and cooling may be performed as appropriate, depending on the state of the preparation.

[0018]

The present invention will be described below in more detail with reference to Examples and Comparative Examples, which do not limit the scope of the present invention. (Example 1) Bar soap

[0019]

(Preparation method) All components were mixed and molded. (Example 2) Liquid detergent

[0021]

(Preparation method) The components from lauric acid to oleic acid were heated and mixed using a vacuum emulsifier, and a mixture of potassium hydroxide and purified water was added to make the mixture uniform. Thereafter, other components were added while cooling sequentially. (Comparative Example 1) Bar soap

[0023]

[0024]

(Test Example 1) Foaming improvement effect by blending sodium sulfate The 2% aqueous solution of the liquid detergent composition of Example 2 (containing 0.3% by weight of sodium sulfate) was evaluated for the foam after 5 minutes at 40 ° C. Height is measured by the Ross Miles method (JIS K3362)
This is a general test method for measuring the foaming power described in the above. ). As a result, about 234m
m, a foam having a height of m was obtained, and compared with a liquid detergent composition containing no sodium sulfate (increased amount of purified water instead of sodium sulfate) (height of foam: about 225 mm), p <0.0
With a significant difference of 1, the effect of improving foaming by the addition of sodium sulfate was recognized. The experiment was performed three times.

In the liquid detergent composition of Example 2, the amount of sodium sulfate was changed to 0.1% by weight.
A similar test was carried out on a liquid detergent composition produced in the same manner as in this example except that the decrease was adjusted by the amount of purified water, and sodium sulfate was found to have a significant difference of p <0.05. The foaming improvement effect by the blending was recognized.

(Test Example 2) Formulation stability test In Example 2, the amount of sodium sulfate was changed,
The stability after storage at 50 ° C. and 0 ° C. for one month was examined for the liquid detergent composition produced in the same manner as in the example except that the increase or decrease was adjusted by the amount of purified water. Table 1 shows the results.

[0028]

[Table 1]

In Table 1, the evaluation criteria are as follows. ：: No problem △: Poor fluidity ×: Solidification From Table 1, it can be seen that when the blending amount of sodium sulfate is 3% by weight or more, the low-temperature stability (0 ° C.) of the liquid preparation decreases.

(Test Example 3) Sensory Evaluation Test Sensory evaluation tests were conducted on Examples 1 and 2 and Comparative Examples 1 and 2 for good foaming and freshness after washing by 10 panelists. Table 2 shows the results.
In addition, the result was evaluated in the following five grades, and the average point was made into the result of Table 2. (Good foaming) 5: Very good 4: Good 3: Neither 2:
Bad 1: Very bad (freshness) 5: Very refreshing 4: Refreshing 3: Neither 2: Not refreshing 1: Not refreshing at all

[0031]

[Table 2]

[0032]

The cleaning composition of the present invention can give excellent freshness after washing while realizing excellent foaming.

Continued on the front page F term (reference) 4C083 AB032 AB102 AB351 AB352 AC122 AC241 AC242 AC422 AC532 AC642 CC23 DD21 DD23 EE06 4H003 AB03 BA01 BA12 CA09 CA15 DA02 EA12 EB05 EB16 FA18 FA21

Claims (3)

[Claims] 1. A cleaning composition containing a higher fatty acid salt having 8 to 22 carbon atoms, comprising sodium sulfate in an amount of 0.01 to less than 3% by weight based on the composition. Composition. 2. The cleaning composition according to claim 1, wherein the blending ratio of the higher fatty acid salt having 8 to 22 carbon atoms is 25 to 95% by weight with respect to the composition, and the composition is solid. 3. The detergent composition according to claim 1, wherein the content of the higher fatty acid salt having 8 to 22 carbon atoms is 5 to 40% by weight based on the composition, and the composition is liquid.