JP2001139995A - Charcoal-containing solid soap composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a solid soap composition having excellent moldability in production, slight swelling, solution and collapse in use and excellent moist feeling. SOLUTION: In this solid soap composition, charcoal is powdered and formulated with a fatty acid soap and a polyhydric alcohol or a saccharide.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solid soap composition having good moldability at the time of production, little dissolution during use, and good moist feeling.

[0002]

2. Description of the Related Art Conventionally, charcoal has been used not only as a fuel, but also for writing books and ink paintings, and for a long time as a lacquered abrasive. In recent years, the utility of charcoal has been reviewed, and new fields of application such as deodorants for refrigerators and the like and dechlorinators for tap water have been developed. Further, in order to utilize the deodorizing effect of charcoal, attempts have been made to mix it with bar soap (Japanese Patent Application Laid-Open Nos. 9-111296 and 10-2895).
95).

[0003] However, the above-mentioned solid soap merely involves kneading powdered charcoal and fatty acid soap, and has problems such as being easily lost in shape during production, being easily disintegrated in use, and swelling.

[0004]

SUMMARY OF THE INVENTION A solid soap composition containing charcoal which solves the above-mentioned problems, has good moldability at the time of production, has little swelling or disintegration during use, and has an excellent moist feeling. The aim was to get.

[0005]

DISCLOSURE OF THE INVENTION The present inventors have conducted studies in view of the above problems, and as a result, by mixing powdered charcoal, fatty acid soap, polyhydric alcohol or saccharides, the moldability at the time of production has been improved. The present invention has been found to provide a solid soap composition which is excellent in swelling, discoloration and disintegration during use, and excellent in moist feeling, and has completed the present invention.

[0006]

Embodiments of the present invention will be described.

[0007] The powdered charcoal used in the present invention is:
Although not particularly limited, it is preferable to use powdered charcoal that is commercially available as a fuel or activated carbon that is commercially available for use as a deodorant or the like. Bamboo or the like may be used in addition to ordinary trees regardless of the type of plant used as a raw material when producing charcoal that is commercially available as a fuel, and as a type of charcoal,
Although black charcoal and white charcoal are known, either one may be used or both may be mixed and used. Activated carbon that is commercially available for use as a deodorant, etc. is made from various carbon-containing materials such as charcoal, sawdust, coal, plant fiber, etc., using a gas activation method,
A substance activated by a method such as a chemical activation method is used. Among activated carbons, it is particularly preferable to use medicated carbon described in the Japanese Pharmacopoeia. The average particle size of the powdered charcoal is preferably 5 mm or less, more preferably 2 mm or less. Further, when charcoal having an average particle diameter exceeding 0.1 mm is blended, a scrub effect can be expected. Further, when charcoal having an average particle size of 0.1 mm or less is used, a smooth soapy feeling is obtained, and a solid soap composition which exhibits a good black appearance with a small amount of 0.1 wt% or less. Can be obtained. The blending amount of the powdered charcoal can be appropriately determined depending on the particle size and use of the charcoal, but is preferably in the range of 0.0001 to 5% by weight. If it exceeds 5% by weight, there may be a problem in moldability during production.

As the fatty acid soap used in the present invention, various fatty acid soaps can be used, but the fatty acid constituting the fatty acid soap preferably has 8 to 24 carbon atoms. The fatty acids can be used irrespective of whether they are linear, branched or saturated or unsaturated, and may be used alone or in combination of two or more. For example, animal fats such as beef tallow, sheep oil and the like, vegetable fats such as coconut oil, palm kernel oil, soybean oil, olive oil, cottonseed oil, castor oil, etc. as such, or a fatty acid mixture obtained from these animal and vegetable fats and oils, and separation thereof Purified lauric acid, myristic acid, palmitic acid, stearic acid,
Fatty acids such as behenic acid, palmito oleic acid, oleic acid, isomyristic acid, isopalmitic acid and isostearic acid can be used alone or in combination of two or more. Among these fatty acid species, beef tallow,
It is preferable to use a mixture of fatty acids obtained from coconut oil, palm kernel oil and soybean oil, or a fatty acid obtained by separating and purifying them, alone or in combination of two or more.

The counter ion of the fatty acid is not particularly limited, and examples thereof include alkali metals such as potassium and sodium, ammonium, triethanolamine, L-arginine and the like.

The amount of the fatty acid soap can be appropriately determined according to the kind of the fatty acid soap, the hardness of the soap, etc., but is preferably 20 to 80% by weight, more preferably 20 to 70% by weight based on the charged amount. I do.

In the bar soap composition of the present invention, a polyhydric alcohol or saccharide is used. Polyhydric alcohols or sugars are the same as those used in conventional transparent soaps. For example, polyhydric alcohols or sugars include glycerin, sorbitol, propylene glycol,
Examples include polyethylene glycol and sucrose. These polyhydric alcohols or saccharides may be used alone or in combination. When a polyhydric alcohol is blended, glycerin obtained as a by-product when neutralizing animal and vegetable fats and oils to prepare a fatty acid soap may be blended as it is. The blending amount of these polyhydric alcohols or saccharides can be appropriately determined according to the unsaturated fatty acid content contained in the fatty acid soap used in the solid soap composition of the present invention, but it makes the fatty acid soap sufficiently transparent. For this purpose, it is preferable that the polyhydric alcohol and the saccharide
20% by weight.

The solid soap composition of the present invention contains, in addition to the above components, necessary amounts of water and ethanol at the time of production. Other known additives such as edetate and hydroxyethanediphosphonic acid Or a chelating agent such as a salt thereof,
A humectant such as hyaluronic acid or a salt thereof, a fragrance and the like may be contained.

The solid soap composition of the present invention can be produced by a conventional method. For example, first, a polyhydric alcohol, ethanol, and water are mixed and dissolved by heating. Fatty acid soap (base material for soap), saccharides, fragrance, chelating agent, etc. are added to this solution, mixed and dissolved sufficiently, cooled, solidified, and cut into a predetermined size and shape. Then, water and ethanol are gradually vaporized and dried at room temperature for about 40 days. Further, the solid soap composition of the present invention can be produced by the following method. Animal and vegetable oils such as coconut oil and tallow are decomposed under high pressure by a conventional method, and then neutralized by adding an alkali solution such as potassium hydroxide to prepare a fatty acid soap. After completion of the neutralization reaction, saccharides, flavors, chelating agents and the like are added, mixed and dissolved sufficiently, cooled, solidified, molded, and dried at room temperature.

[0014]

EXAMPLES Further, the features of the present invention will be described in detail with reference to examples.

[Example 1] Bar soap (1) Palm kernel oil 20.0 (% by weight) (2) Tallow 35.0 (3) Sodium hydroxide (50% by weight) 18.0 (4) Sucrose 7 0.0 (5) Tetrasodium edetate tetrahydrate 0.1 (6) Powdered charcoal (average particle size 10 nm) 0.03 (7) Fragrance 0.1 (8) Ethanol 19.77 Production method: (1) and The oil component of (2) is subjected to high pressure treatment to decompose into fatty acids and glycerin. Neutralize by adding the component of (3),
Cool to 60 ° C. with stirring. The components (4) to (8) are sequentially added, kneaded and homogenized. This is taken out in the form of a bar, molded using a stamping machine, and dried at room temperature for 40 days to produce a solid soap.

[Example 2] Solid soap (1) Sodium soap with a weight ratio of tallow fatty acid to coconut oil fatty acid of 8: 2 60.0 (% by weight) (2) Sucrose 10.0 (3) Alcohol 24. 1 (4) Glycerin 1.0 (5) Tetrasodium edetate tetrahydrate 0.1 (6) Powdered charcoal (average particle size 10 nm) 0.03 (7) Fragrance 0.1 (8) Purified water 67 Production method: The components (2) to (8) are mixed and homogenized, added to (1), kneaded, taken out in the form of a rod, molded with a stamping machine, dried at room temperature for 40 days, and solid soaped. To manufacture.

Using the solid soaps shown in Examples 1 and 2, moldability at the time of production, swelling at the time of use, disintegration,
The moist feeling after use and the appearance color were evaluated.
Further, a solid soap was prepared by replacing sucrose and glycerin blended in Example 2 with purified water, and evaluated as Comparative Example 1 at the same time.

[Moldability at the time of manufacture] Table 1 shows the percentage of cracks and chippings when bar soap was formed by a stamping machine.

[Usage test] In 20 randomly selected households, a solid soap was used in a bathroom, and after 3 weeks, a questionnaire survey was conducted on the state of the soap (swelling and melting) and the feeling of use (moist feeling). went. Regarding the number of households who did not care about soaking and melting,
Table 1 shows the number of households who responded that they felt moist.

[0020]

[Table 1]

As shown in Table 1, in Comparative Example 1 in which glycerin or sucrose was not blended, the probability of cracking or chipping during molding was high, and when used, swelling and disintegration were worrisome, resulting in a moist feeling. There was no usability. On the other hand, in Examples 1 and 2 of the present invention, the moldability was good, the swelling and disintegration during use hardly bothered, and the moist feeling was answered that the household was 70% or more. It was shown to have a good feeling of use.

Example 3 Bar Soap with Scrub (1) Sodium soap with a weight ratio of tallow fatty acid to palm kernel oil fatty acid of 6: 4 60.0 (% by weight) (2) Sucrose 12.0 (3) Alcohol 22.1 (4) glycerin 1.0 (5) edetate tetrasodium tetrahydrate 0.1 (6) powdered charcoal (average particle size 0.5 mm) 3.0 (7) fragrance 0.1 (8 ) Purified water 1.7 Production method: (1) The components (2) to (8) are mixed and homogenized, added to (1), kneaded, removed in the form of a rod, molded out with a stamping machine, and formed at room temperature. It is dried for 40 days to produce a soap bar.

[0023]

As described in detail above, according to the present invention, despite the presence of charcoal, the moldability during production is good,
A solid soap composition with little moistness and disintegration during use and excellent moist feeling was obtained.

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Claims (1)

[Claims] 1. A solid soap composition comprising powdered charcoal, fatty acid soap, polyhydric alcohol or saccharide.