JP2001064691A - Detergent composition - Google Patents

Abstract

(57) [Problem] To provide a detergent composition capable of giving an excellent refreshing feeling without generating a feeling of tightening or squeaking after washing. SOLUTION: In a detergent composition containing a higher fatty acid salt having 8 to 22 carbon atoms, a hydrogen carbonate and / or a carbonate of an alkali metal is contained in an amount of 0.01 to less than 3% by weight based on the composition. A cleaning composition characterized by containing.

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, as a basic performance of a facial and body cleaning composition, in addition to foaming and cleanliness, a fresh feeling after washing is regarded as important. Salt-based ones have become mainstream. However, this base has a good refreshing feeling, but at the same time generates a feeling of tightness and squeaky feeling. In order to solve this problem, it has been attempted to add a suitable humectant, emollient and the like to the higher fatty acid salt base.

However, when a humectant or the like is blended with a higher fatty acid salt base, foaming, which is the basic performance of the detergent, and the stability of the composition over time are inhibited, and a smooth feeling is suppressed at the same time as a smooth feeling. Often, there is a need for improvement.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a detergent composition which can give an excellent refreshing feeling without causing a feeling of tightening or squeaking after washing.

[0005]

The present invention includes the following inventions. (1) In a detergent composition containing a higher fatty acid salt having 8 to 22 carbon atoms, an alkali metal bicarbonate and / or carbonate is added in an amount of 0.01% by weight or more and 3% by weight based on the composition.
The cleaning composition characterized by containing less than.

(2) The detergent composition according to the above (1), wherein the compounding 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 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. (4) The cleaning composition according to any one of (1) to (3), wherein the alkali metal bicarbonate and / or carbonate is sodium hydrogen carbonate, sodium carbonate or sodium sesquicarbonate.

[0007]

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 and sheep oil, and vegetable fats such as coconut oil, palm kernel oil, soybean oil, olive oil, cottonseed oil, and the like. 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 or a potassium ion, an ammonium ion, or a hydroxyalkyl group having 2 to 3 carbon atoms. Alkanol ammonium ions and the like.

The proportion of the higher fatty acid salt in the case of a solid detergent composition 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.

[0011] The detergent composition of the present invention, whether solid or liquid, contains an alkali metal bicarbonate and / or carbonate in an amount of 0.01 to 3% by weight based on the composition.
Less than. As the alkali metal bicarbonate and / or carbonate, sodium or potassium bicarbonate,
Carbonates and / or sesquicarbonates are preferred, and sodium hydrogen carbonate and sodium carbonate are more preferred. These alkali metal bicarbonates or carbonates may be used alone or in combination of two or more.

When the blending ratio of the alkali metal bicarbonate and / or carbonate is less than 0.01% by weight with respect to the composition, a refreshing feeling cannot be given. If there is, in solid preparation, moldability will be worse,
Liquid formulations have reduced stability at low temperatures. The mixing ratio of the alkali metal bicarbonate and / or carbonate is preferably 0.05% by weight or more and less than 3% by weight, more preferably 0.1% by weight or more and less than 3% by weight, based on the composition. is there.

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 alkali metal bicarbonate or an inorganic acid salt other than a carbonate; an organic acid; a salt of an organic acid other than a higher fatty acid; a surfactant other than the higher fatty acid salt; Molecules 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 sulfate, magnesium sulfate and sodium pyrophosphate; For example, lauric acid, myristic acid, palmitic acid,
Higher fatty acids such as stearic acid, oleic acid, isomyristic acid, isopalmitic acid, isostearic acid and the like, and hydroxyethanediphosphonic acid; examples of the organic acid salt include alkali acids of hydroxy acids such as sodium citrate and sodium gluconate. Examples thereof include metal salts, alkaline earth metal salts, 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, acylmethyltaurine 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.

[0018] In addition to the above-mentioned components, the cleaning composition of the present invention may contain, if necessary, components contained in ordinary skin cleaning agents, for example, humectants such as propylene glycol, glycerin, sorbitol, and sucrose. , Higher alcohols, esters,
Oils such as silicones, 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.

[0020]

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

[0021]

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

[0023]

(Preparation method) Using a vacuum emulsifying apparatus, components from lauric acid to oleic acid were heated and mixed, and a mixture of potassium hydroxide and purified water was added to make the mixture uniform. Thereafter, other components were added while cooling sequentially. (Example 3) Bar soap

[0025]

(Production method) All the components were mixed and molded. (Comparative Example 1) Bar soap

[0027]

[0028]

(Test Example 1) Preparation stability test Same as Example 2 except that the amount of sodium hydrogencarbonate was changed and the increase or decrease was adjusted by the amount of purified water in Example 2. The stability after storage at 50 ° C. and 0 ° C. for 4 weeks was examined with respect to the liquid detergent composition produced as described above. Table 1 shows the results.

[0030]

[Table 1]

In Table 1, "→" indicates the state when the temperature was returned from each temperature to room temperature, and the evaluation criteria are as follows. ○: almost returned to the same level as the room temperature product △: worse than the room temperature product ×: hardly recovered From Table 1, when the blending amount of sodium bicarbonate is 3% by weight or more, the low-temperature stability of the liquid preparation is poor. It turns out that it falls.

Test Example 2 Sensory Evaluation Test A sensory test was conducted by ten panelists on the cleaning compositions of Examples 1 and 2 and Comparative Examples 1 and 2, and after washing, the feeling of firmness, squeakiness and lightness were measured. The feeling was evaluated.
The evaluation criteria are as follows.

(Tightness) 5: Hardly felt 4: Not much felt 3: Neither 2: Slightly felt 1: Very felt (squeaky feeling) 5: Hardly felt 4: Not much felt 3: Neither 2: Slightly felt 1: Very felt (freshness) 5: Very refreshed 4: Refreshed 3: Neither 2: Not refreshed 1:
Table 2 shows the results.

[0034]

[Table 2]

[0035]

The cleaning composition of the present invention can give an excellent refreshing feeling without causing a feeling of tightening or squeaking after washing.

Claims (4)

[Claims] 1. A detergent composition containing a higher fatty acid salt having 8 to 22 carbon atoms, wherein a hydrogen carbonate and / or a carbonate of an alkali metal is contained in an amount of 0.01 to 3% by weight based on the composition. The cleaning composition characterized by containing less than. 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. 4. The cleaning composition according to claim 1, wherein the alkali metal bicarbonate and / or carbonate is sodium bicarbonate, sodium carbonate or sodium sesquicarbonate.