JP3512147B2 - Soap containing α, α-glucosylglucoside - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a bar soap.

[0002]

2. Description of the Related Art Solid soap is a solid detergent containing an alkaline salt of fatty acid as a main component and has been used for a long time. These have been produced mainly by adding an aqueous alkali solution to vegetable oils such as olive oil and coconut oil and animal oils and fats such as beef tallow, and then forming a soap by hydrolysis and saponification reaction and salting it out. Further by adding sugars and alcohols to the neat soap thus obtained,
It has been found that the soap can be made transparent due to the aggregate structure of the fine crystals, and transparent soap has come to be produced. Further, a surfactant or the like is added for the purpose of improving transparency or cleaning property.

What has become a particular problem in such solid soaps in recent years is the problem of coloration of the soap base over time. Much has not yet been clarified regarding this coloring mechanism, and it is only known that it can be suppressed by the addition of a chelating agent such as edetate or an antioxidant such as BHT. Regarding the measures, since there is an upper limit value to which these components can be added, it cannot be completely suppressed, and further means for solving the problem of coloring has been desired. In particular, in transparent soaps, such coloring leads to a decrease in transparency, and there is a high risk that it will be perceived as deterioration of quality, so this problem was serious. Further, in the type of soap in which a shaped article such as a flower made of soap is embedded in transparent soap, the color rendering of the shaped article is significantly impaired and the aesthetic value is lowered, which is more serious.

On the other hand, with regard to salts such as trehalose and sodium sulfated trehalose, all of these compounds are known compounds, and their production methods have already been known. For example, trehalose is extracted from trehal manna or the like. The sulfated product can be obtained by sulfating trehalose according to a conventional method. It is already known that by containing it in a skin external preparation such as cosmetics, it exerts preferable effects such as a moisturizing effect and a skin protective effect, but by including it in a solid soap, and by incorporating these. It was not known at all that the coloring of bar soap could be prevented. Also, in the bar soap,
Sorbitol, sucrose, to improve clarity
Although it has been attempted to contain sugars such as honey, these sugars have no effect on suppressing coloring of soap.

[0005]

The present invention has been made under such circumstances, and an object thereof is to provide a further means for solving the problem of soap coloring.

[0006]

In view of such a situation, the inventors of the present invention have conducted diligent research to find a further solution to the problem of soap coloring, and as a result, trehalose and sulfated trehalose or physiologically It was found that an acceptable salt has such an effect, and the invention was completed.

That is, the present invention relates to a solid soap containing trehalose (excluding transparent solid soap), and also to a solid soap containing sulfated trehalose or a physiologically acceptable salt thereof. Hereinafter, the present invention will be described in detail with a focus on the embodiments of the present invention.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION (1) Trehalose and sulfated trehalose used in the present invention or physiologically acceptable salts thereof Examples of physiologically acceptable salts of trehalose and sulfated trehalose used in the present invention include: Examples thereof include trehalose, sulfated trehalose sodium salt and the like, which are already known substances in the literature, and their production methods are already known. Moreover, since these are already commercially available compounds, it is possible to purchase and use such compounds. These may be contained only in one kind, or may be contained in combination of two or more kinds. In the solid soap of the present invention, the preferable content of these trehalose and sulfated trehalose or a physiologically acceptable salt thereof is 0.01 to 10% by weight, more preferably 0.05 to 7% by weight. And more preferably 0.1 to 5% by weight. When physiologically acceptable salts of trehalose and sulfated trehalose are contained in soap, they have an action of suppressing coloration of soap over time.

(2) Solid Soap of the Present Invention The solid soap of the present invention is characterized by containing the physiologically acceptable salts of trehalose and sulfated trehalose described above. As the solid soap of the present invention, a normal opaque solid soap, a transparent solid soap, any solid soap in which an opaque portion and a transparent portion are mixed is a target, and in the opaque solid soap, a soap cloth is used. Has the characteristic that the yellowing due to the passage of time is improved, and that the transparency is maintained for a long time in transparent soap, and the pattern created by the transparent part and the opaque part is kept beautiful for a long time in the mixed type. Have. The solid soap of the present invention can contain the raw materials usually used in the solid soap as optional components. Such optional components include fatty acids, higher alcohols, ethanol, alcohols such as glycerin and sucrose, honey, oils and fats components such as squalane, perfume components, chelating agents such as edetate salts, and BHT.
And antioxidants such as BHA, UV absorbers, preservatives such as parabens, powders such as titanium mica, titanium dioxide, iron oxide, ultramarine blue, red 226, blue 1 and other organic and inorganic coloring materials, Further, a modeled product in which a picture or the like is printed on a thin film of carboxymethyl cellulose can be preferably exemplified. The bar soap of the present invention can be produced by treating these raw materials according to a conventional method. Examples of a preferable manufacturing method include a so-called mechanical kneading method in which neat soap is kneaded by a machine and pressure-produced, and a frame kneading method in which neat soap is melted by heating and poured into a frame. Of course, cast molding using a rubber mold or the like is also possible. The most preferred solid soap of the present invention has a molar ratio of sodium hydroxide to organic amine of 1: 0.8 to 1: 2 and a saponification equivalent of 2 to 3 with respect to a fatty acid or animal or vegetable oil. It's soap. This is because such transparent soap has a very high degree of transparency, and changes in color tone such as coloring are conspicuous.

[0010]

EXAMPLES The present invention will be described in detail below with reference to examples, but it goes without saying that the present invention is not limited to these examples.

<Examples 1 to 6> Solid transparent soaps were prepared according to the formulations shown in Table 1 below. That is, the prescription ingredients were charged in a heating kneader, kneaded at 80 ° C. for 2 hours, and pelletized by a hot roll and pelleter to obtain transparent soap dough as pellets. The pellets were heated and melted, poured into a frame, cooled and solidified to obtain transparent soap. When the water content of this transparent soap was quantified by a Karl Fischer moisture analyzer, the values shown in Table 1 were obtained. The component composition of the soap was calculated from this value, and it was as shown in Table 2. Table 3 shows the amount of alkali to the fatty acid as the saponification equivalent. Similarly, Comparative Examples 1 to 6 in which trehalose of Examples 1 to 6 was replaced with water and Comparative Examples 7 to 12 in which trehalose of Examples 1 to 6 was replaced with sucrose.
Was prepared and stored at 40 ° C. for 1 month, and the degree of coloring was judged according to the following criteria. The results are shown in Table 4. From this table, it is understood that the bar soap of the present invention has the property of being difficult to be colored.
In addition, the numerical value of a prescription represents a weight part. (Criteria for Coloring) ++: No or almost no coloration. +: Somewhat colored, but not noticed by itself. ±: It is colored, but you do not notice it unless you look carefully. -: Coloring is clearly seen.

[0012]

[Table 1]

[0013]

[Table 2]

[0014]

[Table 3]

[0015]

[Table 4]

<Examples 7 to 8> Solid transparent soaps were prepared according to the following formulations. The compounds represented by general formula (I) are shown in Table 5. That is, the prescription ingredients were charged in a heating kneader, kneaded at 80 ° C. for 2 hours, and pelletized by a hot roll and pelleter to obtain transparent soap dough as pellets. The pellets were heated and melted, poured into a frame, cooled and solidified to obtain transparent soap. Table 5 also shows the results of a storage test conducted at 40 ° C. for 1 month in the same manner as in Examples 1 to 6. From this, it is understood that the compound represented by the general formula (I) has an excellent effect of suppressing coloring. Coconut oil fatty acid 40 parts by weight Beef tallow fatty acid 160 parts by weight Triethanolamine 160 parts by weight Sodium hydroxide 31 parts by weight Water 75 parts by weight Compounds of general formula (I) group 8 parts by weight

[0017]

[Table 5]

Example 9 A solid soap was prepared according to the following formulation. That is, the ingredients were placed in a heating kneader, kneaded at 80 ° C. for 2 hours, and pelletized with a hot roll and pelleter to obtain soap dough. The pellets were melted by heating and then poured into a frame to be cooled and solidified to obtain soap. This was subjected to a storage test at 40 ° C. for 1 month in the same manner as in Examples 1 to 6, but no coloring was observed (score: ++). Beef tallow 34 parts by weight coconut oil 19 parts by weight olive oil 4 parts by weight 34% aqueous sodium hydroxide solution 27 parts by weight disodium edetate 0.1 parts by weight sodium nitrite 0.1 parts by weight BHT 0.1 parts by weight titanium dioxide 0.1 Parts by weight trehalose 0.1 parts by weight sodium sulfated trehalose 0.1 parts by weight honey 5.4 parts by weight cetanol 5 parts by weight water 5 parts by weight

[0019]

According to the present invention, it is possible to provide a further solution to the problem of soap coloring.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-8-53339 (JP, A) JP-A-5-286843 (JP, A) JP-A-9-110892 (JP, A) JP-A-8- 127587 (JP, A) JP-A-9-124453 (JP, A) JP-A-10-158696 (JP, A) JP-A-10-45560 (JP, A) JP-A-10-279591 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) C11D 1/00-19/00

Claims (3)

(57) [Claims] 1. A bar soap containing trehalose (excluding transparent bar soap). 2. A solid soap containing sulfated trehalose or a physiologically acceptable salt thereof. 3. The solid soap according to claim 2, which is a transparent soap.