JPH10147800A - Transparent soap composition and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a soap compsn. which is excellent in transparency, hardness, and foaming properties and can be produced without using ethanol and causing the environmental pollution in production by incorporating anionic surfactants including a higher fatty acid salt and an acylamino acid salt, a polyhydric alcohol, and water in a specified ratio into the same. SOLUTION: This compsn. contains anionic surfactants including a higher fatty acid salt represented by the formula: R1 COOM1 (wherein R1 is 7-19C alkyl; and M1 is ammonium, an alkali metal, an alkanolamine, or a basic amino acid) and at least one acylamino acid salt represented by the formula: R2 -R3 -COOM2 [wherein R2 is 7-17C alkyl; M2 is H, an alkaline earth metal, or M1 ; and R3 is -CON(CH3 )CH2 -, -CON(CH3 )CH2 CH2 -, or -CONH(CH2 CH2 COOM3 )CH- (wherein M3 is M2 )], a polyhydric alcohol (e.g. glycerin, polyethylene glycol, or sugar), and water in a compounding ratio in the range determined by (2) to (7) in Figure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transparent solid soap which has a reduced production time and does not cause environmental pollution due to alcohol evaporation during the production.

[0002]

2. Description of the Related Art A solidified higher fatty acid salt, so-called "soap", has been used as a washing agent for washing the body since ancient times, and is still the mainstream of body washing agents even today. So-called "transparent soaps", which are made transparent by adding a clarifying agent such as polyhydric alcohol or saccharides for the purpose of giving the soap a high-grade feel, occupy a part of the current body cleanser market.

Conventionally, a transparent soap is generally manufactured by the following steps. A step of heating and dissolving a soap base, polyhydric alcohols, saccharides, etc. with an aqueous ethanol solution A step of pouring the dissolved soap solution into a mold and cooling and solidifying A step of cutting the solidified product into a predetermined size A step of drying for 30 to 40 days Polishing, stamping and packaging processes

[0004] As can be seen from the above manufacturing process, the conventional transparent soap requires an enormous amount of time and space from the start of production to commercialization because the drying period is very long. Therefore, the production cost of the transparent soap is high.

[0005] Furthermore, with the recent rise in awareness of environmental issues, it has become a major problem that ethanol evaporating during drying deteriorates the environment.

[0006]

The problem to be solved by the present invention is to provide a transparent soap composition having a short production period and no environmental pollution by ethanol while maintaining the quality as a transparent soap, and a method for producing the same. It is to provide.

[0007]

Means for Solving the Problems The present inventors have proposed transparency,
As a result of intensive studies to obtain a transparent soap composition that does not impair the performance such as foam amount and hardness, has a short production period, and does not cause environmental problems due to alcohol, it has been identified as a specific anionic surfactant It has been found that the above-mentioned object can be achieved by controlling the polyhydric alcohol and water within a specific range, thereby completing the present invention.

That is, the present invention is characterized in that the blending ratio of an anionic surfactant comprising a higher fatty acid salt and an acyl amino acid, a polyhydric alcohol and water is within a specific range of FIG. The present invention relates to a soap composition.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is characterized in that the compounding ratio of an anionic surfactant comprising a higher fatty acid salt and an acyl amino acid, a polyhydric alcohol and water is within the range shown by the hatched portion in FIG. It is a transparent soap composition. That is, 25 to 45% by weight of an anionic surfactant composed of a higher fatty acid salt and an acyl amino acid, and 3% of a polyhydric alcohol.
The range is 0 to 60 wt% and the amount of water is 10 to 30 wt%.

If the amounts of the three components are outside the above ranges, it is not preferable in a system in which the amount of the anionic surfactant is large, because dissolution is difficult or transparency is insufficient. Further, a system in which the amount of polyhydric alcohol and / or water is large is not preferable because the soap does not solidify or only a soft soap is obtained.

The higher fatty acid salt in the present invention is represented by the general formula (1)

[0012]

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(Wherein R ₁ represents a C ₇ to C ₁₉ saturated or unsaturated alkyl group and M ₁ represents an ammonium, an alkali metal, an alkanolamine or a basic amino acid) It is.

Examples of the higher fatty acid salt represented by the above general formula (1) include sodium coconut oil fatty acid, sodium fatty acid palm oil, sodium fatty acid palm kernel oil, sodium laurate, sodium myristate, sodium tallow fatty acid, and coconut fatty acid. Triethanolamine, palm oil fatty acid triethanolamine, palm kernel oil fatty acid triethanolamine, lauric acid triethanolamine, myristic acid triethanolamine, tallow fatty acid triethanolamine, coconut oil fatty acid potassium, palm oil fatty acid potassium, palm kernel oil Fatty acid potassium, potassium laurate, potassium myristate, potassium tallow fatty acid, coconut oil fatty acid lysine salt, palm oil fatty acid lysine salt,
Palm kernel oil fatty acid lysine salt, lauric acid lysine salt, myristic acid lysine salt, tallow fatty acid lysine salt, coconut oil fatty acid arginine salt, palm oil fatty acid arginine salt, palm kernel oil fatty acid arginine salt, lauric acid arginine salt, myristic acid arginine salt And tallow fatty acid arginine salts. These higher fatty acid salts may be used alone or as a mixture.

When the fatty acids constituting the higher fatty acid salt are mixed fatty acids, natural fatty acids may be used as they are, or single fatty acids may be mixed in a predetermined composition.

On the other hand, the acyl amino acid salt used together with the higher fatty acid salt is represented by the general formula (2)

[0017]

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Wherein R ₂ represents a C ₇ to C ₁₇ saturated or unsaturated alkyl group; M ₂ represents hydrogen, ammonium, an alkali metal, an alkaline earth metal, an alkanolamine or a basic amino acid; R ₃ is represented by the general formula (3)

[0019]

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General formula (4)

[0021]

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Or the general formula (5)

[0023]

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(Wherein M ₃ represents hydrogen, ammonium, an alkali metal, an alkaline earth metal, an alkanolamine or a basic amino acid). )
And at least one acyl amino acid salt represented by the formula:

Among the acyl amino acid salts represented by the general formula (2), those in which R ₃ is the general formula (3) include, for example, cocoyl sarcosine sodium, lauroyl sarcosine sodium, myristoyl sarcosine sodium, lauroyl sarcosine potassium, and lauroyl sarcosine. Triethanolamine, lauroyl sarcosine-L-arginine salt and the like. Examples of the compound in which R ₃ is the general formula (4) include sodium cocoylmethyl-β-alanine, sodium lauroylmethyl-β-alanine,
Myristoylmethyl-β-alanine sodiumSodium palmitoylmethyl-β-alanine, stearoylmethyl-β-alanine sodium, lauroylmethyl-β
-Alanine potassium, lauroylmethyl-β-alanine triethanolamine, or cocoylmethyl-β-alanine-L-arginine salt, and the like. When R ₃ has the general formula (5), for example, N-cocoyl-L Monosodium glutamate, N-mixed fatty acyl (C
₈ -C ₂₀₎ -L- glutamate monosodium, N- lauroyl -L- monosodium glutamate, N- cocoyl -L- glutamic acid mono triethanolamine, N
-Cocoyl-L-glutamic acid mono-L-lysine salt and the like.

The ratio between the higher fatty acid salt and the acyl amino acid salt is 99: 1 to 80:20 by weight, preferably 9
7: 3 to 86:14. Outside of this range, transparency is insufficient in a system containing a large amount of higher fatty acid salts, and the system is unfavorably weakened in a system containing a large amount of acyl amino acid salts.

Further, in the present invention, it is preferable that the amount of the polyhydric alcohol is within the predetermined range of FIG. That is, the content of the dihydric polyhydric alcohol is 10 to 90 wt%, the content of the trihydric polyhydric alcohol is 0 to 90 wt%, and the content of the tetrahydric or higher polyhydric alcohol is 10 to 50 wt%.

Outside of this range, although it differs depending on the type of polyhydric alcohol used, the transparency is deteriorated and the transparent soap is weakened, which is not preferable.

As the polyhydric alcohols of the present invention, dihydric or higher polyhydric alcohols can be used. Examples of the dihydric polyhydric alcohol include ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, 1,3-butylene glycol, and the like.

Glycerin and the like are examples of the trihydric polyhydric alcohol.

Examples of polyhydric alcohols having four or more valencies include sucrose, glucose, mannitol, sorbitol, maltitol, trehalose, maltose, pullulan, pectin, lactose, xylit, carrageenan, alginic acid and the like.

In order to further improve the transparency, the transparent soap composition of the present invention contains a polyoxyethylene type and / or
Or you may mix | blend a polyoxypropylene type nonionic surfactant. Examples of the polyoxyethylene type and / or polyoxyethylene type nonionic surfactant blended for such purpose include POE sorbitan monolaurate, POE sorbitan monooleate, POE sorbitan trioleate, POE sorbitan monoisostearate POE lauryl ether, POE cetyl ether, POE oleyl ether, POE stearyl ether, POE behenyl ether, POE hexyl decyl ether, POE decyl tetradecyl ether, POE reduced lanolin, POE lanolin, POE lanolin alcohol, POE phytosterol, POE, POP cetyl Ether, POE, POP decyl tetradecyl ether,
POE nonyl phenyl ether, POE castor oil, PO
E-hardened castor oil and the like can be mentioned. The number of moles of polyoxyethylene and polyoxypropylene added to these polyoxyethylene type and / or polyoxyethylene type nonionic surfactants is preferably from 1 to 100, and the blending amount is from 0.5 to 7 per transparent solid soap. % Is preferred.

Further, in addition to the essential components described above, the transparent solid soap of the present invention may further contain, if necessary, an alkylbenzene sulfonate, a sulfonate of an α-olefin sulfonate, sodium lauryl sulfate, and triethanolamine lauryl sulfate. , Sulfuric acid alkyl esters such as ammonium lauryl sulfate, sodium polyoxyethylene lauryl ether sulfate, triethanolamine sulfate polyoxyethylene lauryl ether, ammonium polyoxyethylene lauryl ether sulfate, and higher alcohol phosphate esters , 2-cocoalkyl-N-carboxyethyl-
N-hydroxyethylimidazolinium betaine, 2-
Palm kernel oil alkyl-N-carboxyethyl-N-hydroxyethylimidazolinium betaine, 2-coconut oil alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, 2-palm kernel alkyl-
Imidazoline-type amphoteric surfactants such as N-carboxymethyl-N-hydroxyethylimidazolinium betaine, and amidopropyl betaine-type such as coconut oil fatty acid amidopropyl betaine, lauric acid amidopropyl betaine, and palm kernel oil fatty acid amidopropyl betaine. Amphoteric surfactants, sodium cocoylmethyltaurine, acylmethyltaurine salts such as sodium lauroylmethyltaurine,
Palm oil fatty acid hydrolyzed silk peptide, lauroyl hydrolyzed silk peptite, palm kernel oil fatty acid hydrolyzed silk peptide, palm oil fatty acid hydrolyzed collagen peptide, lauroyl hydrolyzed collagen peptite, palm kernel oil fatty acid hydrolyzed collagen Peptides, coconut oil fatty acid hydrolyzed casein peptide, lauroyl hydrolyzed casein peptide, palm kernel oil fatty acid hydrolyzed casein peptide, coconut oil fatty acid hydrolyzed casein peptide,
Acylated products of protein hydrolysates such as lauroyl hydrolyzed keratin peptite, palm kernel oil acyl hydrolyzed keratin peptide, disodium lauryl sulfosuccinate, POE (1-4) disodium lauryl sulfosuccinate, POE sulfosuccinate (5) Lauroylethanolamide disodium, sulfosuccinic acid type surfactants such as disodium amide amide sulfosuccinate, alkyl ether carboxylate, acylated isethionate,
Nonionics such as fatty acid amide ether sulfate, monoalkyl phosphate ester salt, polyoxyethylene fatty acid ethanolamide phosphate ester, and also fatty acid diethanolamide, fatty acid monoethanolamide, POE fatty acid monoethanolamide, amine oxide, POE alkyl phenyl ether, etc. Surfactants, cationic surfactants such as lauryltrimethylammonium chloride, stearyltrimethylammonium chloride, distearyldimethylammonium chloride, N-2-hydroxyethyl-N-2-lauric acid amide ethyl glycine, N-2
-Hydroxyethyl-N-2-coconut fatty acid amide ethylglycine, N-2-hydroxyethyl-N-2-lauric acid amideethyl-β-alanine, N-2-hydroxyethyl-N-2-coconut fatty acid amideethyl- β-alanine N- (carboxymethyl) -N- ｛2- [N-
(2-Hydroxyethyl) lauric acid amide] ethyl
Glycine, N- (carboxymethyl) -N- ｛2- [N
A surfactant such as-(2-hydroxyethyl) coconut oil fatty acid amide] ethyl @ glycine can be used.

The transparent solid soap of the present invention may contain, as necessary, an emollient such as ester oil, a humectant such as hyaluronic acid, chitin and chitosan, a cell-supplementing agent such as aloe extract and placenta extract, allantoin, An anti-inflammatory agent such as glycyrrhizinate, a sequestering agent such as edetic acid and hydroxyethanediphosphonic acid, a fragrance, a dye, and the like can be added.

The transparent solid soap of the present invention can be produced by heating and dissolving a predetermined component, injecting it into a mold, cooling, solidifying, cutting, polishing and stamping. The method for producing a transparent soap of the present invention does not require a drying step unlike the conventional transparent soap, but is preferably aged for about one week after solidification and cutting in order to facilitate molding.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples.

[0037]

【Example】

Examples 1 to 7 and Comparative Examples 1 to 6 The compositions shown in Table 1 were trial-produced by the following methods and evaluated for transparency and the like.

(Prototype Production Method) A predetermined raw material was dissolved at about 80 ° C. in a four-necked flask equipped with a condenser.
The mixture was poured into a vinyl chloride pipe having a diameter of 0.2 mm and cooled and solidified overnight. Take out from the pipe the next day, cut to about 24mm,
The surface was polished and stamped to obtain a test sample (round shape: thickness 23 mm, weight about 80 g).

(Evaluation of Physical Properties) Using a commercially available transparent soap (elliptical, 23 mm thick, 80 g in weight) as a comparative product, the transparency and hardness of the obtained transparent soap were measured by the following methods.

Transparency (determined visually) Transparency is almost the same ・ ・ ・ ・ ◎ Transparency is slightly poor ・ ・ ・ ・ ○ Poor transparency ・ ・ ・ ・ △ No transparency ・ ・ ・ ・ × ・ Hardness (Tactile sensation) Approximately equivalent ・ ・ ・ ・ ◎ Slightly soft ・ ・ ・ ・ ○ Soft ・ ・ ・ ・ △ Unable to form ・ ・ ・ ・ ×

[0041]

[Table 1]

As is clear from the results in Table 1, Example 1
Despite the fact that the transparent soaps of the present invention were produced without going through the drying step, the transparent soaps had good transparency and hardness, while Comparative Examples 1 to 7 outside the specific range shown in FIG. The transparent soap of No. 6 was inferior in transparency and hardness.

Examples 8 to 10 and Comparative Examples 7 to 8 The compositions shown in Table 2 were trial-produced in the same manner as in Examples 1 to 7 and Comparative Examples 1 to 6, and the transparency and the like were evaluated.

[0044]

[Table 2]

As apparent from the results in Table 2, Example 8
Although the transparent soaps of the present invention of No. 10 to No. 10 had good transparency and hardness even though they were produced without going through the drying step, Comparative Examples 7 and 10 outside the specific range shown in FIG. The transparent soap of No. 8 was inferior in transparency and hardness.

Examples 11 to 15 and Comparative Examples 9 to 11 The compositions shown in Table 3 were trial-produced in the same manner as in Examples 1 to 7 and Comparative Examples 1 to 6, and the transparency and the like were evaluated.

[0047]

[Table 3]

As is clear from the results in Table 1, Example 1
Although the transparent soaps 1 to 15 of the present invention had good transparency and hardness even though they were produced without a drying step, Comparative Example 9 out of the specific range shown in FIG. ~ 11
Was inferior in transparency and hardness.

Hereinafter, a transparent solid soap was prepared in the same manner.

Example 16 Soap base (tallow: coconut fatty acid = 8: 2) 38.0% N-mixed fatty acyl (C8-C20) -monosodium L-glutamate 1.0 1,3-butylene Glycol 18.0 ・ polyethylene glycol 2000 20.0 ・ sucrose 10.0 ・ edetate 0.1 ・ water 12.9

Example 17-Soap base (tallow: coconut fatty acid = 8: 2) 27.0%-Sodium myristate 2.0-Coconut fatty acid L-lysine salt 1.0-Cocoyl methyl-β-alanine sodium 0 0.5 ・ propylene glycol 20.0 ・ dipropylene glycol 20.0 ・ sorbitol 10.0 ・ edetate 0.1 ・ fragrance 0.5 ・ water 18.9

Example 18 Soap base (tallow: coconut fatty acid = 8: 2) 12.0% Sodium palm kernel oil fatty acid 11.0 Potassium laurate 5.0 Lauroyl sarcosine sodium 5.0 Polypropylene glycol 12.0 ・ Glycerin 13.0 ・ Glucose 7.0 ・ Mannitol 7.0 ・ Fragrance 0.5 ・ Water 27.5 The transparent solid soaps of Examples 16 to 18 were excellent in transparency, foaming and hardness. .

[0053]

Industrial Applicability According to the present invention, a transparent solid soap having excellent transparency, good hardness and good foaming can be produced without using ethanol, and a drying step is not required. It can be greatly reduced and does not pollute the environment during production. Further, the transparent soap composition of the present invention does not lose transparency during use.

[Brief description of the drawings]

FIG. 1 is a triangular chart showing the mixing ranges of three components of the transparent soap composition of the present invention.中 in the figure indicate the mixing ratio of Examples 1 to 7, respectively.

FIG. 2 is a triangular chart showing a preferred blending range of polyhydric alcohol in the transparent soap composition of the present invention.

Claims (7)

[Claims] 1. A transparent soap composition containing no ethanol, wherein the mixing ratio of an anionic surfactant comprising a higher fatty acid salt and an acyl amino acid salt, a polyhydric alcohol and water is within a specific range of FIG. Stuff. 2. A higher fatty acid salt represented by the general formula (1): (Wherein R ₁ represents a C ₇ to C ₁₉ saturated or unsaturated alkyl group, and M ₁ represents an ammonium, an alkali metal, an alkanolamine or a basic amino acid). The transparent soap composition according to claim 1. 3. An acylamino acid salt represented by the general formula (2): (Wherein R ₂ represents a C ₇ to C ₁₇ saturated or unsaturated alkyl group. M ₂ represents hydrogen, ammonium, an alkali metal,
Represents an alkaline earth metal, an alkanolamine or a basic amino acid, and R ₃ is represented by the general formula (3): General formula (4) Or the general formula (5) (Wherein M ₃ represents hydrogen, ammonium, an alkali metal, an alkaline earth metal, an alkanolamine or a basic amino acid). 3. The transparent soap composition according to claim 1, which is at least one acylamino acid salt represented by the formula (1). 4. The transparent soap composition according to claim 1, wherein the weight ratio of the higher fatty acid salt and the acyl amino acid salt is 99: 1 to 80:20. 5. The polyhydric alcohol is a composition of a dihydric polyhydric alcohol, a trihydric polyhydric alcohol and a polyhydric alcohol having a valency of 4 or more within a predetermined range of FIG. The transparent soap composition according to any one of claims 1 to 4. 6. The transparent soap composition according to claim 1, further comprising a polyoxyethylene and / or polyoxypropylene type nonionic surfactant. Transparent solid soap composition. 7. An anionic surfactant comprising a higher fatty acid salt and an acyl amino acid salt, a polyhydric alcohol and water are blended within a specific range of FIG. 1, heated and dissolved, poured into a mold, and cooled and solidified, and then molded. A method for producing a transparent soap.